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GB/T 30691-2014: Conveyor belts -- Test atmospheres and conditioning periods
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 30691-2014 | English | 154 |
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Conveyor belts -- Test atmospheres and conditioning periods
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GB/T 30691-2014
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Basic data | Standard ID | GB/T 30691-2014 (GB/T30691-2014) | | Description (Translated English) | Conveyor belts -- Test atmospheres and conditioning periods | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G42 | | Classification of International Standard | 53.040.20 | | Word Count Estimation | 8,867 | | Date of Issue | 12/12/2014 | | Date of Implementation | 10/1/2015 | | Quoted Standard | ISO 21183-1 | | Adopted Standard | ISO 18573-2012, IDT | | Regulation (derived from) | National Standards Bulletin 2014 No. 30 | | 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 specifies all types of conveyor belts used for conditioning and testing temperature, humidity and time, without regard to its cover layer material is rubber or plastic. It also provides a conveyor belt made from a sample to be tested shall c | GB/T 30691-2014: Conveyor belts -- Test atmospheres and conditioning periods---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Conveyor belts. Test atmospheres and conditioning periods
ICS 53.040.20
G42
National Standards of People's Republic of China
Conveyor test environment and conditioning time
(ISO 18573.2012, IDT)
Issued on. 2014-12-22
2015-10-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard uses the translation method identical with ISO 18573.2012 "conveyor belt test environment and conditioning time" (in English).
Correspondence between the consistency of the standards of international documents and normative references of the following documents.
HG/T 4601.1-2014 Light conveyor belts - Part 1. Basic properties and applications (ISO 21183-1.2005, IDT).
This standard made the following editorial changes.
--- "This International Standard" be replaced by "this standard";
--- Delete international standards foreword.
The standard proposed by China Petroleum and Chemical Industry Association.
This standard by the National Standardization Technical Committee pulley and the belt conveyor Technical Committee (SAC/TC428/SC1) centralized.
This standard is drafted by. Zhejiang Double Arrow Rubber Co., Ltd., Zhejiang Sanwei Rubber Products Co., Ltd., Anhui favorite gum
With a limited liability company, Shandong Bronte Industrial Co., Ltd. Qingdao Shinkansen technology consulting, Qingdao University of Science and Technology, Qingdao Branch of new materials
Technology Industrial Park Development Co., Ltd., Qingdao Branch Rubber Technology Services Ltd. Dah Sing.
Drafters of this standard. people will Shen, Zhang Fang, Song Changjiang, Yuan sea of \u200b\u200bbooks, Xin Yong record, Liu Li, Lvgui Qin Zhuang Jian Ping.
Introduction
Generally considered the state of conditioning before testing is very important, but not necessarily all in some trials. Its purpose is to test the open
Beginning a regular basis, to exclude unnecessary variables, to test the accuracy of the optimum increase.
In order to achieve this, some of the variables that standardization is very necessary.
In addition to steel cord conveyor belt, fabric conveyor belt all contain ingredients. They are highly hydrophobic or somewhat hydrophilic. similar
, The polymer layer or a cover layer having a thermoplastic or susceptible to thermal aging. Any of these factors are likely to have a significant characteristic of the conveyor belt
influences. When you want to determine the status and adjust if necessary to select the most appropriate state, these factors should be taken into account. This standard preparation phase
Segment has been considered given the provisions of ISO 139 [1], ISO 23529 [2] and ISO 2231 [3].
Conveyor test environment and conditioning time
1 Scope
This standard specifies all types of conveyor belts used for conditioning and testing temperature, humidity and time, regardless of its cover layer material is rubber
Rubber or plastic. It also provides for the belt made from a sample to be tested shall comply with the requirements of the time interval.
This standard does not include special conditions for a particular test or material or simulate specific climate.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
ISO 21183-1 Light conveyor belts - Part 1. Basic performance and application (Lightconveyorbelts-Part 1. Principal
characteristicsandapplications)
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Standard environment standardatmosphere
Sample conditioning and testing of the specified temperature and humidity.
Note. See chapter 5.
3.2
Standard state standardcondition
Standard environment, the conveyor belt when the sample reached equilibrium state.
3.3
Water balance moistureequilibrium
When the belt sample was exposed to free movement in the air, there is no significant change in the quality of state achieved.
3.4
Conditioning conditioning
In order to improve the reproducibility of the test results, the sample should be placed in a specified period of time prior to testing under standard environment.
3.5
Thermal equilibrium thermalequilibrium
At uniform temperature conditions, conveyor sample temperature and the ambient temperature at various points within 1 ℃ difference between the state achieved.
4 Pretreatment
If the belt fabric ingredient is a highly hygroscopic material or test methods are difference of moisture content of the sample is highly sensitive
Sex, then the moisture from drying surface hysteresis curve to get the water balance method is very desirable. This should not by relative humidity
At 10% and the temperature at 60 ℃ ~ 70 ℃ environment between the sample pretreatment to obtain.
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