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GB/T 2423.18-2021
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 19.040
CCS K 04
GB/T 2423.18-2021 / IEC 60068-2-52:2017
Replacing GB/T 2423.18-2012
Environmental testing - Part 2: Test methods -
Test Kb: Salt mist, cyclic (sodium chloride solution)
[IEC 60068-2-52:2017, Environmental testing - Part 2-52: Tests -
Test Kb: Salt mist, cyclic (sodium chloride solution), IDT]
ISSUED ON: MAY 21, 2021
IMPLEMENTED ON: DECEMBER 01, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of the PRC.
Table of Contents
Foreword ... 3
Introduction ... 5
1 Scope ... 7
2 Normative references ... 7
3 Terms and definitions ... 7
4 General description of the test ... 8
5 Test apparatus ... 9
6 Salt solution ... 9
7 Initial measurements ... 10
8 Preconditioning ... 10
9 Testing ... 10
10 Recovery (at the end of testing) ... 15
11 Final measurements ... 15
12 Information to be given in the relevant specification ... 15
13 Information to be given in the test report ... 15
Annex A (Informative) Typical apparatus for cyclic salt mist, humid condition,
dry condition and standard atmosphere corrosion tests ... 17
Annex B (Informative) Description of each test method ... 18
Annex NA (Informative) Constituent documents of GB/T 2423 ... 20
Bibliography ... 24
Figure A.1 -- Schematic diagram of test apparatus ... 17
Table 1 -- Test cycles for test methods 1 to 8 ... 14
Foreword
This document is drafted in accordance with GB/T 1.1-2020 "Directives for
standardization - Part 1: Rules for the structure and drafting of standardizing
documents".
This document is Part 18 of GB/T 2423. For the issued parts of GB/T 2423, see
Annex NA.
This document replaces GB/T 2423.18-2012 "Environmental testing - Part 2:
Test methods - Test Kb: Salt mist, cyclic (sodium chloride solution)". Compared
with GB/T 2423.18-2012, in addition to structural adjustment and editorial
changes, the main technical changes are as follows:
a) Add a description of the effect of test conditions on the specimens (see
Clause 4);
b) Add the cycle process of test methods 7 and 8 (see Clause 9);
c) Modify Figure 1;
d) Add "Information to be given in the test report" (see Clause 13).
This document, using translation method, is identical to IEC 60068-2-52:2017
"Environmental testing - Part 2-52: Tests - Test Kb: Salt mist, cyclic (sodium
chloride solution)".
China’s documents which have a consistent correspondence with the
international documents normatively referenced in this document are as follows:
- GB/T 2421-2020 Environmental testing - General and guidance (IEC
60068-1:2013, IDT);
- GB/T 2423.3-2016 Environmental testing - Part 2: Testing method - Test
Cab: Damp heat, steady state (IEC 60068-2-78:2012, IDT);
- GB/T 10125-2012 Corrosion tests in artificial atmospheres - Salt spray tests
(ISO 9227:2006, IDT).
This document has made the following editorial changes:
a) Change the name of this document to "Environmental testing - Part 2: Test
methods - Test Kb: Salt mist, cyclic (sodium chloride solution)";
b) Add an informative annex "Constituent documents of GB/T 2423" (see
Annex NA).
Attention is drawn to the possibility that some of the elements of this document
may be the subject of patent rights. The issuing authority of this document shall
not be held responsible for identifying any or all such patent rights.
This document was proposed by and shall be under the jurisdiction of National
Technical Committee 8 on Environmental Conditions of Electric and Electronic
Products and Environmental Test of Standardization Administration of China
(SAC/TC 8).
Drafting organizations of this document: China National Electric Apparatus
Research Institute Co., Ltd.; CVC Certification & Testing Co., Ltd.; Tsinghua
Shenzhen International Graduate School; Beijing Goldwind Science & Creation
Windpower Equipment Co., Ltd.; Shenzhen ORT Testing Technology Co., Ltd.;
Electric Power Research Institute of Hainan Power Grid Co., Ltd.; Guangzhou
Power Supply Bureau of Guangdong Power Grid Co., Ltd.; Wuxi Sunan
Experimental Equipment Co., Ltd.; Wuxi Soyater Test Equipment Co., Ltd.;
Shanghai Rece Electronic Technology Co., Ltd.; CenerTech Tianjin Chemical
Research and Design Institute Co., Ltd.; Hongli Zhihui Group Co., Ltd.; Nanjing
Wuhe Test Equipment Co., Ltd.; Shenzhen Polytechnic; Chongqing Yinhe
Experimental Equipment Co., Ltd.; Fujian Xinneng Offshore Wind Power R&D
Center Co., Ltd.; Beihang University; CCIC Southern Testing Co., Ltd.; Ningbo
Ouzhi Electrical Technology Co., Ltd.; Shinry Technologies Co., Ltd.; The Fifth
Electronics Research Institute of the Ministry of Industry and Information
Technology; Hainan Power Grid Co., Ltd.
Main drafters of this document: Jie Ganxin, Xu Xuedong, Wang Xilin, Hu
Xiaoming, Mei Liguang, Che Hansheng, Zhao Hailong, Wang Yong, Ni Yangyi,
Zhou Zhongming, Xu Dazhong, Guo Zhijia, Lv Tiangang, Zhang Dinghu, Yu
Zhan, Li Shushan, Wang Mingyang, Wang Xiaohui, Ma Ping , Ke Cilong, Gao
Jun, Zhang Hongbin, Fang Lianhang, Jia Zhidong, Liu Jing, An Penghui, Hu
Zhishan.
The previous releases of this document and the documents it replaces are as
follows:
- It was first issued in 1985 as GB/T 2423.18-1985, first revised in 2000, and
second revised in 2012;
- This is the third revision.
Environmental testing - Part 2: Test methods -
Test Kb: Salt mist, cyclic (sodium chloride solution)
1 Scope
This document specifies the application of the cyclic salt mist test to
components or equipment designed to withstand a salt-laden atmosphere as
salt can degrade the performance of metallic and/or non-metallic materials.
This document is applicable to components or equipment that can withstand a
salt-laden atmosphere. During the test, the corresponding severity level is
selected according to the degree of tolerance.
2 Normative references
The contents of the following documents, through normative references in this
text, constitute indispensable provisions of this document. Among them, for
dated references, only the edition corresponding to that date applies to this
document. For undated references, the latest edition (including all amendments)
applies to this document.
ISO 9227 Corrosion tests in artificial atmospheres - Salt spray tests
IEC 60068-1 Environmental testing - Part 1: General and guidance
IEC 60068-2-78 Environmental testing - Part 2-78: Tests - Test Cab: Damp
heat, steady state
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at
the following addresses:
IEC Electropedia: http://www.electropedia.org/
ISO Online browsing platform: http://www.iso.org/obp
......
GB/T 2423.18-2012
Environmental testing.Part 2.Test methods.Test Kb.Salt mist, cyclic (sodium chloride solution)
ICS 19.040
K04
National Standards of People's Republic of China
Replacing GB/T 2423.18-2000
Environmental testing - Part 2. Test methods
Test Kb. Salt mist, alternating (sodium chloride solution)
Environmentaltesting-Part 2.Testmethods-
TestKb.Saltmist, cyclic (sodium chloridesolution)
(IEC 60068-2-52.1996, Environmentaltesting-Part 2.Tests-
TestKb.Saltmist, cyclic (sodium chloridesolution), IDT)
2012-11-05 release
2013-02-01 Implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Directory
Preface III
1 range 1
2 normative reference document 1
General description of the test 1
4 test equipment 2
5 salt solution 2
6 harsh grade 3
7 initial detection 3
Pretreatment 3
9 Test 3
10 recovery (test end) 4
11 Final inspection 4
12 Information to be given in the specification 4
Appendix NA (informative) Components of the GB/T 2423 standard
Preface
This part is part 18 of GB/T 2423. The components of the GB/T 2423 standard are available in the Appendix.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 2423.18-2000 "Environmental testing for electrical and electronic products Part 2. Test methods Test Kb. Salt mist,
Alternating (sodium chloride solution) ". This section is the main change as compared with GB/T 2423.18-2000.
--- According to GB/T 2423.3-2006, the relative humidity of the damp heat storage is changed from "93-3 2%" to "(93 ± 3)%";
--- In line with the IEC original, 6.2 of this section adds a note;
For the purposes of the IEC original, Chapter 10 of this section specifies that the sample can be cleaned in accordance with other methods specified in the relevant specification
And dry.
This part uses the translation method equivalent to IEC 60068-2-52.1996 "Environmental Test Part 2. Test Test Kb. Salt Fog, Cross
Change (sodium chloride solution) ".
And the normative reference in this part of the international documents have a consistent correspondence between the following documents.
GB/T 2424.10-1993 Basic environmental testing procedures for electric and electronic products - General guidelines for atmospheric corrosion accelerated tests
(eqvIEC 60355.1971)
This part compared with IEC 60068-2-52.1996, mainly made the following editorial changes.
--- removed the IEC 60068-2-52.1996 preface, an increase of national standards preface;
- change the title of Chapter 2 from "reference standard" to "normative reference document";
- change the title of chapter 10 from "recovery (at the end of the trial)" to "recovery (end of trial)";
- change the title of Chapter 12 from "information to be given by the relevant specification" to "information to be given by the relevant specification";
--- Added information Appendix NA.
This part of the National Electrical and Electronic Products Environmental Standards and Environmental Testing Standardization Technical Committee (SAC/TC8) proposed and centralized.
This part is drafted by China Electrotechnical Research Institute Co., Ltd.
This part of the main drafters.
This part of the previous version of the standard instead of the release of the standard.
--- GB/T 2423.18-1985, GB/T 2423.18-2000.
Environmental testing - Part 2. Test methods
Test Kb. Salt mist, alternating (sodium chloride solution)
1 Scope
This test is applicable to elements or equipment intended to withstand salt-bearing atmospheres, and the corresponding harsh grades are selected according to their tolerance.
Salt can reduce the performance of metal materials and/or nonmetallic materials. The mechanism of salt corrosion of metal materials is electrochemical corrosion, not metal
The deterioration of the material is caused by the comprehensive chemical reaction of the salt and the material. The rate of corrosion depends to a large extent on the supply of the sample surface
The amount of oxygenated salt solution, the temperature of the sample and the temperature and humidity of the environment.
In addition to showing the corrosion effect of this test, it can also show that some non-metallic materials due to the absorption of salt and the extent of deterioration. In the following test method
, The time of spraying the salt solution is sufficient to adequately wet the whole sample. Since this wetting is repeated after storage in hot and humid conditions (severe)
Grades (1) and (2)), and in some cases it is also possible to replenish the storage under the test standard atmosphere (harsh grades (3) to (6)), so it can be more effective
To reproduce the effects of the natural environment.
Severe levels (1) and (2) are applicable to testing products used in the marine environment or in offshore areas. Harsh rating (1) applies to the test
Most of the products exposed to this environment during service life (eg marine radar, deck equipment). Harsh rating (2) Applicable to trial possible
Often exposed to marine environments, but are usually protected by closed products (eg, usually in a bridge or in a control room).
In addition, the harsh grades (1) and (2) are usually used as general corrosion tests in component quality assurance procedures.
Severe grades (3) to (6) apply to products that are frequently used alternately between the salt atmosphere and the dry atmosphere, such as cars and their
part.
Thus, the harsh grades (3) to (6) contain an additional storage at the test standard atmospheric conditions compared to the harsh grades (1) and (2).
In fact, during the interruption of work, for example at weekends, a dry atmosphere may appear. This is included in the harsh grades (3) to (6)
The drying stage leads to a mechanism that may be completely different from that under constant hot and humid conditions.
The test method is faster than the use condition. But this test method can not be for a variety of different types of samples to establish a comprehensive
Acceleration factor (see IEC 60355.1971).
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 2421.1-2008 Environmental and Environmental Testing of Electrical and Electronic Products Overview and Guidance (IEC 60068-1.1988, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test Cab. Constant heat and humidity test GB/T 2423.3-2006.
(IEC 60068-2-78.2001, IDT)
IEC 60355.1971 Evaluation of atmospheric corrosion acceleration test (Anappraisaloftheproblemsofaccelerated
testingforatmosphericcorrosion
3 General description of the test
The harsh grades (1) and (2) divide the test procedure into a number of specified spray cycles, followed by a wet heat storage after each spray cycle
Period, the spray temperature between 15 ℃ ~ 35 ℃, storage conditions for the temperature (40 ± 2) ℃, relative humidity (93 ± 3)%.
Harsh grades (3), (4), (5) and (6) The test procedure is divided into several specified test cycles. The composition of each test cycle is
A spray cycle, followed by a hot and humid storage cycle followed by a spray cycle of hot and humid storage, followed by a test standard atmosphere
Under conditions of storage for a cycle. The temperature of the spray is between 15 ℃ and 35 ℃, and the temperature is (40 ± 2) ℃, the relative humidity
(93 ± 3)%; test standard atmospheric conditions for the temperature (23 ± 2) ℃, relative humidity of 45% to 55%.
If spraying and storage is carried out in different chambers, care should be taken to avoid loss of salt solution attached to the sample and
Damage to the specimen.
The sample should not be energized during the spray and is normally not energized during storage.
4 test equipment
4.1 salt spray box
The test chamber shall consist of a material which does not affect the effect of salt spray corrosion.
The structure of the chamber and the method of producing the salt spray may be optional, provided that the following conditions are met.
a) the conditions in the test chamber should be maintained within the specified range;
b) The test chamber shall be of sufficient capacity to provide a stable, uniform test condition (free from turbulence) and
These conditions are not affected by the sample;
c) salt spray can not be sprayed directly onto the sample;
d) droplets at the top of the box, box wall or other parts can not be dropped onto the specimen;
e) The test chamber should be vented properly to prevent the pressure in the box from rising and distribute the salt mist evenly. The end of the vent should be able to avoid strong ventilation
Free from the test chamber to produce strong airflow.
4.1.1 Sprayer
The sprayer should be designed and constructed to produce minutely dispersed, moist, dense fog. The material used to make the sprayer should not be made with salt solution
How to react.
4.1.2 Spray used salt solution should not be reused.
4.1.3 Air supply
If you use compressed air, then enter the sprayer air should not contain any impurities, such as oil, dust and so on.
Measures should be taken to make the humidity of the compressed air meet the requirements of the test conditions. The air pressure should be suitable for producing small, scattered, dense
The fog.
In order to prevent salt deposition from clogging the sprayer, it is recommended that the relative humidity of the air at the nozzle should be no less than 85%. A viable way is to make empty
Gas in a small bubble form through a water tower to automatically maintain the water level. The water temperature should not be lower than the temperature of the chamber.
The air pressure should be adjustable to ensure the collection rate specified in 9.2.
4.2 hot and humid box
The test chamber shall meet the requirements of GB/T 2423.3-2006 and shall maintain a relative humidity of (93 ± 3)% and a temperature of (40 ± 2) ° C.
4.3 standard air box
The test chamber shall comply with the requirements of Table 1 of Table 5.2 of GB/T 2421.1-2008, that is, at a temperature of (23 ± 2)
55% relative humidity.
5 salt solution
5.1 5% sodium chloride solution (NaCl)
5.1.1 The salt used in the test shall be of high quality sodium chloride (NaCl). When dried, the content of sodium iodide shall not exceed 0.1%, the total content of impurities
Not more than 0.3%.
The mass percentage concentration of the salt solution should be (5 ± 1)%.
The solution should be prepared by dissolving (5 ± 1) parts of the salt at a mass of 95 parts of distilled water or deionized
Water.
Note that the specification may require other salt solutions whose composition and characteristics (concentration, pH, etc.) should be clearly stated in the specification, such as the special nature of the simulated marine environment
effect.
5.1.2 The pH of the salt solution should be between 6.5 and 7.2 at a temperature of (20 ± 2) ° C. In conditional tests, the pH should be maintained in this range
Inside. To this end, in the premise of ensuring the concentration of sodium chloride, you can use dilute hydrochloric acid or sodium hydroxide solution to adjust the pH value. Each batch of new allocation
The solution should be measured at pH.
6 harsh rating
6.1 The severity of the test is defined as follows.
Severe levels (1) and (2).
The number of spray cycles and the combination of the damp heat storage duration immediately after each spray cycle.
Harsh grades (3) to (6).
The test consisted of several cycles. Each test cycle is stored by four spray cycles and followed by hot and humid after each spray cycle, and
In four spray cycles and an additional storage cycle after the hot and humid storage under test standard atmospheric conditions.
6.2 The specification shall specify the use of one of the following six harsh grades.
Harsh Level (1). Four spray cycles, each 2h, after each spray cycle followed by a period of 7 days of hot and humid storage cycle.
Note. The damp heat storage cycle can be appropriately shortened, so that each spray cycle plus hot and humid storage cycle for a total of 7d.
Severe level (2). Three spray cycles, each 2h, after each spray cycle followed by a period of 20h ~ 22h damp heat storage
cycle.
Harsh rating (3). A test cycle consists of four spray cycles, each 2h, after each spray cycle followed by a period
20h ~ 22h of the damp heat storage cycle; thereafter, and then in a test standard atmospheric conditions (temperature (23 ± 2) ℃, relative humidity
45% ~ 55%) for the period of 3d storage cycle.
Severe level (4). Severe level (3) specified by the two test cycles.
Harsh Level (5). Harsh Level (3) The four test cycles specified.
Severe grade (6). Severe grade (3) prescribed by eight test cycles.
6.3 Figure 1 shows the comprehensive timing of all tests.
7 initial detection
Specimens shall be visually inspected and, if necessary, electrical and mechanical testing shall be carried out in accordance with the relevant requirements.
8 pretreatment
The specification should specify that the cleaning procedure immediately prior to testing should also indicate whether the temporary surface protective layer needs to be removed.
Note. The cleaning method should not affect the effect of salt spray on the specimen, nor can it cause secondary corrosion. Do not touch the surface of the sample with your hands before testing.
9 test
9.1 The sample into the salt spray box, spray at 15 ℃ ~ 35 ℃ spray 2h.
9.2 All exposed areas should be maintained in salt spray conditions, with a horizontal collection area of 80cm2 clean collector placed in the exposed area
At any point, an average of 1.0 mL to 2.0 mL of the solution was collected during the collection cycle. At least two collectors should be used. The collector should be
Placed in a position not covered by the specimen, and to avoid collecting all kinds of condensate.
Note In order to obtain accurate measurement results, the spray period should not be less than 8 h when calibrating the spray rate of the test chamber.
9.3 Severe levels (1) and (2)
After the end of each spray cycle, the sample transferred to the hot and humid box storage, storage conditions in accordance with the provisions of GB/T 2423.3-2006.
(40 ± 2) ℃, relative humidity (93 ± 3)%.
Spray according to the provisions of 9.1, and according to the provisions of 9.3 storage, composed of a cycle.
The number of cycles required for the harsh rating and the storage time are in accordance with 6.2.
9.4 Harsh grades (3) to (6)
After the end of each spray cycle, the sample transferred to the hot box for 20h ~ 22h storage conditions in accordance with GB/T 2423.3-2006
(40 ± 2) ° C and a relative humidity of (93 ± 3)%. Repeat this cycle three times.
The samples should then be stored for three days under test standard atmospheric conditions (temperature (23 ± 2) ° C, relative humidity 45% ~ 55%).
Each test cycle is stored by four hot spray cycles (see 9.1) and 9.4 and thereafter stored under test atmospheric conditions
3d composition.
The number of test cycles required for the harsh rating is in accordance with 6.2.
9.5 The sample should be transferred from the salt spray box to the hot box should try to reduce the loss of salt solution on the sample.
Note. If the salt mist box can maintain the temperature and humidity conditions specified in GB/T 2423.3-2006, the sample can be kept in the salt spray box at the storage stage.
9.6 If the specimen consists of more than one part, there shall be no contact between these parts or between these parts and other metal parts,
And their permutations should not affect each other.
10 recovery (end of test)
The specification should indicate whether to clean the sample, if you want to clean, you should wash in the running tap water for 5min, then distilled water or away from
Sub-water rinse, hand shake or blow the water droplets with airflow, and then dry at a temperature (55 ± 2) ° C for 1 h, followed by a prescribed recovery
(GB/T 2421.1-2008 5.4.1) cooling 1h ~ 2h.
If necessary, the relevant specification shall specify other methods for cleaning and drying the specimen and, under specified recovery conditions (GB/T 2421.1-
2008 in the 5.4.1) storage 1h ~ 2h. The temperature of the cleaning water should not exceed 35 ° C.
11 final detection
Specimens shall be visually inspected, dimensioned and functional in accordance with the relevant specifications.
The specification should provide an acceptable or unacceptable sample of the criteria.
12 Information about the specification should be given
In the case of the specification, the following shall apply as appropriate. The specification shall provide the information required by the following articles,
Especially the terms of the mark (*), as these terms are required.
Article number
a) salt solution, if different from that described in 5.1.1 * 5
b) Appropriate harsh rating * 6
c) Initial detection 7
d) Pretreatment 8
e) recovery 10
f) final detection * 11
Figure 1 different test harsh grades (1) ~ (6) of the time scale diagram
Appendix NA
(Informative)
GB/T 2423 standard components
In addition to this part, the components of the GB/T 2423 standard are as follows.
GB/T 2423.1-2008 Environmental testing for electric and electronic products - Part 2. Test methods - Test A. Low temperature (IEC 60068-
2-1.2007, IDT)
GB/T 2423.2-2008 Environmental testing for electric and electronic products - Part 2. Test methods - Test B. High temperature (IEC 60068-2-
2.2007, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test Cab. Constant heat and humidity test GB/T 2423.3-2006.
(IEC 60068-2-78.2001, IDT)
GB/T 2423.4-2008 Environmental testing for electric and electronic products - Part 2. Test methods - Test Db. Alternating damp heat (12 h
12h cycle) (IEC 60068-2-30.2005, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test Ea and guidance - Impacts GB/T 2423.5-1995.
(IEC 60068-2-27.1987, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test Eb and guidance - Collisions - GB/T 2423.6-1995.
(IEC 60068-2-29.1987, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Tests for Ec and guidance - Dumping and overtaking GB/T 2423.7-1995.
Inverted (mainly for equipment type samples) (IEC 60068-2-31.1982, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test Ed. Free fall - GB/T 2423.8-1995.
(IEC 60068-2-32.1990, IDT)
GB/T 2423.10-2008 Environmental testing for electric and electronic products - Part 2. Test methods - Test Fc. Vibration (sinusoidal)
(IEC 60068-2-6.1995, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test Ga and guidance - Steady - state acceleration GB/T 2423.15-2008.
(IEC 60068-2-7.1986, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test J and Guideline.
(IEC 60068-2-10.2005, IDT)
GB/T 2423.17-2008 Environmental testing for electric and electronic products - Part 2. Test methods - Test Ka salt spray
(IEC 60068-2-11.1981, IDT)
Environmental testing of electrical and electronic products - Test method for low pressure (IEC 60068-2-13) GB/T 2423.21-2008.
1983, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test N. Temperature change GB/T 2423.22-2002.
(IEC 60068-2-14.2009, IDT)
Environmental testing for electrical and electronic products - Tests - Sealing of GB/T 2423.23-1995
GB/T 2423.24-1995 Environmental test for electric and electronic products - Part 2. Test methods - Test Sa. Analog ground
Solar radiation (IEC 60068-2-5.1975, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test Z/AM. Low temperature/low pressure GB/T 2423.25-2008.
Comprehensive test (IEC 60068-2-40.1976, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test Z/BM. High temperature/low pressure GB/T 2423.26-2008.
Comprehensive test (IEC 60068-2-41.1976, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test Z/AMD. Low temperature/low gas (GB/T 2423.27-2005)
Continuous pressure/humidity test (IEC 60068-2-39.1976, IDT)
GB/T 2423.28-2005 Environmental testing for electric and electronic products - Part 2. Test methods - Test T. Soldering (IEC 60068-
2-20.1979, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Tests for XA and guidance - in cleaning - GB/T 2423.30-1999.
(IEC 60068-2-45.1993, IDT)
Environmental testing of electric and electronic products - Part 2. Test methods - Test Ta. Wetting and weighing method for solderability GB/T 2423.32-2008.
(IEC 60068-2-54.2006, IDT)
GB/T 2423.33-2005 Environmental testing for electric and electronic products - Part 2. Test methods - Test Kca. High concentration of dioxins
Sulfur test
Environmental testing for electric and electronic products - Part 2. Test methods - Test Z/AD. Temperature/humidity group GB/T 2423.34-2005.
Combined cycle test (IEC 60068-2-38.1974, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test Z/AFc. Thermal and non - dispersal
Thermal test samples of low temperature/vibration (sinusoidal) comprehensive test (IEC 60068-2-50.1983, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test Z/BFc - Heat dissipation and non - dispersion - GB/T 2423.36-2005.
Thermal test samples of high temperature/vibration (sinusoidal) comprehensive test (IEC 60068-2-51.1983, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Tests - Dust test, GB/T 2423.37-2006.
(IEC 60068-2-68.1994, IDT)
GB/T 2423.38-2008 Environmental testing for electric and electronic products - Part 2. Test method tests R. Water test methods and guidance
(IEC 60068-2-18.2000, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test Ee - Bounce (IEC 60068 -
2-55.1987, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test Cx. Unsaturated high - pressure steam GB/T 2423.40-1997.
Constant hot and humid (IEC 60068-2-66.1994, IDT)
Basic environmental testing procedures for electric and electronic products - Wind pressure test method GB/T 2423.41-1994
Environmental testing for electric and electronic products - Part 2. Test methods - Vibration, shock and similar kinetics GB/T 2423.43-2008.
Test sample installation (IEC 60068-2-47.2005, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test Z/ABDM - Climatic order GB/T 2423.45-1997.
(IEC 60068-2-61.1991, IDT)
GB/T 2423.47-1997 Environmental testing for electric and electronic products - Part 2. Test methods - Test Fg. Acoustic vibration (IEC 60068-
2-65.1993, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test Ff - Vibration - time history method GB/T 2423.48-2008.
(IEC 60068-2-57.1999, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test - Fe - vibration - sinusoidal tape GB/T 2423.49-1997.
Frequency method (IEC 60068-2-59.1990, IDT)
GB/T 2423.50-2012 Environmental testing for electric and electronic products - Part 2. Test methods - Test for Cy.
Accelerated test of components (IEC 60068-2-67.1995, IDT)
GB/T 2423.51-2012 Environmental testing for electric and electronic products - Part 2. Test methods Test Ke. Flowing mixed gas rot
Corrosion test (IEC 60068-2-60.1995, IDT)
GB/T 2423.52-2003 Environmental testing for electric and electronic products - Part 2. Test methods - Test 77. Structural strength and impact
(IEC 60068-2-27.1999, IDT)
GB/T 2423.53-2005 Environmental testing for electric and electronic products - Part 2. Test methods - Test Xb. Friction caused by hand
Marking and printed text wear (IEC 60068-2-70.1995, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test Xc. Fluid contamination GB/T 2423.54-2005.
(IEC 60068-2-74.1999, IDT)
Environmental testing for electric and electronic products - Part 2. Environmental testing tests - Eh - hammering test GB/T 2423.55-2006.
(IEC 60068-2-75.1997, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test Fh - Broadband random vibration (ISO /IEC 2423.56..2006);
(Digital control) and guidelines (IEC 60068-2-64.2008, IDT)
Environmental testing for electric and electronic products - Part 2-81. Test methods - Test Ei. Impact shocks GB/T 2423.57-2008.
Response spectrum synthesis (IEC 60068-2-81.2003, IDT)
Environmental testing for electric and electronic products - Part 2-80. Test methods - Test Fi. Vibration mixing molds GB/T 2423.58-2008.
(IEC 60068-2-80.2005, IDT)
Environmental testing of electric and electronic products - Part 2. Test methods - Test Z/ABMFh. Temperature (low
Temperature, high temperature)/low pressure/vibration (random) synthesis (IEC 60068-2-80.2005, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test U. - Lead - out and integral safety test GB/T 2423.60-2008.
Assembly strength (IEC 60068-2-21.2006, IDT)
Environmental testing for electric and electronic products - Part 2. Test methods - Test - Tilt and swings GB/T 2423.101-2008.
Environmental testing for electric and electronic products - Part 2. Test methods - Tests - Temperature (low temperature, high temperature)/GB/T 2423.102-2008.
Low pressure/vibration (sine) synthesis
......
GB/T 2423.18-2000
GB
NATIONAL STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 19.040
K 04
idt IEC 68-2-52.1996
Environmental testing - Part 2. Tests –
Test Kb. Salt mist, cyclic (sodium chloride solution)
ISSUED ON. JANUARY 3, 2000
IMPLEMENTED ON. AUGUST 1, 2000
Issued by. National Quality Supervision Bureau
This standard is replaced by GB/T 2423.18-2012
3. No action is required - Full-copy of this standard will be automatically &
immediately delivered to your EMAIL address in 0~60 minutes.
Table of Contents
Foreword ... 3
IEC Foreword ... 4
1 Scope ... 6
2 Normative references ... 7
3 General description of the test ... 7
4 Test apparatus ... 8
5 Salt solution ... 9
6 Severities ... 10
7 Initial measurements ... 11
8 Pre-conditioning ... 11
9 Testing ... 11
10 Recovery (at the end of testing) ... 12
11 Final measurements ... 13
12 Information to be given in the relevant specification ... 13
Foreword
This Standard identically uses the second edition of IEC 68-2-52.1996 and
modified GB/T 2423.18-1985 Environmental testing - Part 2. Tests - Test Kb.
Salt mist, cyclic (sodium chloride solution).
Considering the consistency with IEC standard, this Standard deleted the
content of artificial seawater formula in GB/T 2423.18-1985. The adoption of
the International standard is modified from non-equivalent use to equivalent
use.
Since the implementation of this Standard, GB/T 2423.18-1985 is replaced
simultaneously.
This Standard was proposed by Subcommittee on Climate of National
Electrical and Electronic Products Environmental Technology Committee.
This Standard shall be under the jurisdiction of National Technical Committee
on Electrical and Electronic Products - Environmental Conditions and
Environmental Testing of Standardization Administration of China.
The drafting organization of this Standard. Ministry of Communications
Standards Institute of Measurement.
Main drafters of this Standard. Tian Lin, Yuan Shuncai.
This Standard was issued on May 1985 for the first time; and was revised in
2000 for the first time.
This Standard entrusts Communications Standards Institute of Measurement
for interpretation.
Environmental testing - Part 2. Tests -
Test Kb. Salt mist, cyclic (sodium chloride solution)
1 Scope
This test is intended for application to components or equipment designed to
withstand a salt-laden atmosphere, depending on the chosen severity. Salt
can degrade the performance of parts manufactured using metallic and/or
non-metallic materials.
The mechanism of salt corrosion on metallic materials is electrochemical,
whereas the degradation effects experienced on non-metallic materials are
caused by complex chemical reactions of the salts with the materials involved.
The rate at which corrosive action takes place is dependent, to a large extent,
on the supply of oxygenated salt solution to the surface of the test specimen,
the temperature of the specimen and the temperature and humidity of the
environment.
Apart from the corrosive effects, this test may be used to indicate
deterioration of some non-metallic materials by assimilation of salts. In the
following test methods, the period of spraying with the relevant salt solution is
sufficient to wet the specimen thoroughly. Because this wetting is repeated
after intervals of storage under humid conditions (severities (1) and (2)) and -
in some cases severities ((3) to (6)) - supplemented by storage under a
standard atmosphere for testing, it goes some way to reproducing the effects
of natural environments.
Severities (1) and (2) are intended to be used for testing products which are
used in a marine environment, or in close proximity to the sea. Severity (1)
should be used to test products which are exposed to the environment for
much of their operational life (e.g. ship radar, deck equipment). Severity (2)
should be used to test products which may be exposed to the marine
environment from time to time but will normally be protected by an enclosure
(e.g. navigational equipment which will normally be used on the bridge or in a
control room).
Additionally, severities (1) and (2) are commonly used as a general corrosion
test in component quality assurance procedures.
Severities (3) to (6) are intended for products where, under normal use, there
is a frequent change between salt-laden and dry atmosphere, e.g.
......
| Standard ID | GB/T 2423.18-2021 (GB/T2423.18-2021) | | Description (Translated English) | Environmental testing - Part 2: Test methods - Test Kb: Salt mist, cyclic(sodium chloride solution) | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K04 | | Classification of International Standard | 19.040 | | Word Count Estimation | 18,113 | | Date of Issue | 2021-05-21 | | Date of Implementation | 2021-12-01 | | Older Standard (superseded by this standard) | GB/T 2423.18-2012 | | Drafting Organization | China National Electrical Equipment Research Institute Co., Ltd., Weikai Testing Technology Co., Ltd., Tsinghua University Shenzhen International Graduate School, Beijing Goldwind Kechuang Wind Power Equipment Co., Ltd., Shenzhen Youruite Testing Technology Co., Ltd., Hainan Power Grid Co., Ltd. Power Science Research Institute, Guangdong Power Grid Co., Ltd. Guangzhou Power Supply Bureau, Wuxi Sunan Test Equipment Co., Ltd., Wuxi Soyat Test Equipment Co., Ltd., Shanghai Rece Electronic Technology Co., Ltd., CNOOC Tianjin Chemical Research and Design Institute Co., Ltd., Hongli Zhihui Group Co., Ltd., Nanjing Wuhe Test Equipment Co., Ltd., Shenzhen Vocational and Technical College, Chongqing Yinhe Test Instrument Co., Ltd., Fujian Xinneng Offshore Wind Power R&D Center Co., Ltd., Beijing University of Aeronautics and Astronautics, China Inspection Group Southern Test Co., Ltd., Ningbo Ouzhi | | Administrative Organization | National Technical Committee on Environmental Conditions and Environmental Tests for Electrical and Electronic Products (SAC/TC 8) | | Regulation (derived from) | National Standard Announcement No. 7 of 2021 | | Proposing organization | National Standardization Technical Committee for Environmental Conditions and Environmental Tests of Electrical and Electronic Products (SAC/TC 8) | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration | | Standard ID | GB/T 2423.18-2012 (GB/T2423.18-2012) | | Description (Translated English) | Environmental testing. Part 2: Test methods. Test Kb: Salt mist, cyclic (sodium chloride solution) | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K04 | | Classification of International Standard | 19.040 | | Word Count Estimation | 12,125 | | Older Standard (superseded by this standard) | GB/T 2423.18-2000 | | Quoted Standard | GB/T 2421.1-2008; GB/T 2423.3-2006; IEC 60355-1971 | | Adopted Standard | IEC 60068-2-52-1996, IDT | | Drafting Organization | China Electric Apparatus Research Institute Co., Ltd. | | Administrative Organization | National Environmental conditions and electrical and electronic products environmental testing Standardization Technical Committee | | Regulation (derived from) | National Standards Bulletin No. 28 of 2012 | | Proposing organization | National Electrical and Electronic Products Environmental Conditions and Environmental Testing Standardization Technical Committee (SAC/TC 8) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard applies to a predetermined tolerance of salinity atmospheric components or equipment, test selection based on their tolerance level corresponding severities. Metal salts can be reduced and (or) the performance of non-metallic materials. Corr | | Standard ID | GB/T 2423.18-2000 (GB/T2423.18-2000) | | Description (Translated English) | Environmental testing for electric and electronic products Part II: Tests - Test Kb: Salt spray, alternating (sodium chloride solution) | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K04 | | Classification of International Standard | 19.040 | | Word Count Estimation | 7,752 | | Date of Issue | 2000-01-03 | | Date of Implementation | 2000-08-01 | | Older Standard (superseded by this standard) | GB/T 2423.18-1985 | | Quoted Standard | GB/T 2421-1999; GB/T 2423.3-1993; GB/T 2424.10-1993 | | Adopted Standard | IEC 60068-2-52-1996, IDT | | Drafting Organization | Standards and Metrology Institute of the Ministry of Communications | | Administrative Organization | National Environmental conditions and electrical and electronic products environmental testing Standardization Technical Committee | | Regulation (derived from) | National Standards Bulletin No. 28 of 2012 | | Proposing organization | National Committee of Experts on Electrical and Electronic Products Environmental Technology | | Issuing agency(ies) | State Quality and Technical Supervision | | Summary | This standard applies to a predetermined tolerance of salinity atmospheric components or equipment, the tolerance level with selected severities may be. Salt can reduce the metal parts and (or) non-metallic parts of the performance. |
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