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GB/T 30789.3-2014: Paints and varnishes -- Evaluation of degradation of coatings -- Designation of quantity and size of defects, and of intensity of uniform changes
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Paints and varnishes -- Evaluation of degradation of coatings -- Designation of quantity and size of defects, and of intensity of uniform changes
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GB/T 30789.3-2014
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PDF similar to GB/T 30789.3-2014
Basic data | Standard ID | GB/T 30789.3-2014 (GB/T30789.3-2014) | | Description (Translated English) | Paints and varnishes -- Evaluation of degradation of coatings -- Designation of quantity and size of defects, and of intensity of uniform changes | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G50 | | Classification of International Standard | 87.040 | | Word Count Estimation | 16,15 | | Date of Issue | 7/8/2014 | | Date of Implementation | 12/1/2014 | | Quoted Standard | ISO 4628-1-2003 | | Adopted Standard | ISO 4628-3-2003, IDT | | Regulation (derived from) | 2014 National Standards Bulletin No. 18 | | 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 a standard image with the comparative assessment of rust grade approach. This standard gives a standard image shows the lower surface of the steel through the coating of paint and rust coating rust observed overall damage level. IS | GB/T 30789.3-2014: Paints and varnishes -- Evaluation of degradation of coatings -- Designation of quantity and size of defects, and of intensity of uniform changes
---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.
Paints and varnishes. Evaluation of degradation of coatings. Designation of quantity and size of defects, and of intensity of uniform changes
ICS 87.040
G50
National Standards of People's Republic of China
Paints and varnishes - Evaluation of degradation of coatings
The number and size of defects and uniformity of appearance change
Identification - Part 3. Evaluation of rust grade
Designationofquantityandsizeofdefects, andofintensityofuniformchanges
inappearance-Part 3. Assessmentofdegreeofrusting
(ISO 4628-3.2003, IDT)
Issued on. 2014-07-08
2014-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 30789 "Paints and varnish coating aging rating number and size of the defect and the identity of the extent of uniform changes in appearance."
Divided into the following nine sections.
--- Part 1. General and identification systems;
--- Part 2. Evaluation of blistering levels;
--- Part 3. Evaluation of rust grade;
--- Part 4. Evaluation cracking grade;
--- Part 5. Evaluation of flaking grade;
--- Part 6. Assessment of degree of chalking tape method;
--- Part 7. Method for Evaluation of velvet cloth chalking rating;
--- Part 8. scribe or other artificial defect assessment and corrosion peeling peripheral level;
--- Part 9. Evaluation of filiform corrosion level.
This section GB/T Part of 330,789.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This section uses the translation method identical with ISO 4628-3.2003 "number and size of paints and varnishes Evaluation of degradation of coatings defects
As well as the appearance of a uniform degree of change identification - Part 3. Rusty rating assessment. "
This part is proposed by the China Petroleum and Chemical Industry Association.
This part of the National Standardization Technical Committee and the pigment coating (SAC/TC5) centralized.
This section drafted by. CNOOC Changzhou coating Chemical Research Institute, COSCO Kansai Paint Chemical Co., Ltd., Shandong Pentium Paint Co., Limited
Division Shenzhen Hirota Decoration Group Co., Ltd., Heilongjiang Province Quality Supervision and Testing Institute, Beijing Air Materiel Biam new materials technology Engineering Unit
Parts Limited, Shaanxi Baotashan Paint Co., Ltd. Zhuhai special fluorine.
The main drafters of this section. Zhang Ping, Liu Huicheng, Wang Hui, Li Shaojiang, Sun Lide, Yang Zhenbo, Liu Xiaoqing, Houhan Ting.
Paints and varnishes - Evaluation of degradation of coatings
The number and size of defects and uniformity of appearance change
Identification - Part 3. Evaluation of rust grade
1 Scope
GB/T 30789 in this section gives a comparative assessment with the standard picture Rusty level approach.
This section gives a standard image shows the comprehensive destruction of painted steel surface penetrating coating of rust and observed under a coating of corrosion
grade.
Note 1. The standard image is selected in the "European rust hierarchy", the European Union paints, inks and artists' colors Manufacturers Association Publishing (CEPE), author
Brussels. GB/T 30789.3 Rusty Rusty European hierarchy and the hierarchy comparison, see Appendix B, Table B.1.
Note 2. GB T 30789.3 relatively Attachment/rust rating system and test method standards assessment ASTMD610 painted steel surface rust rating system
Record B, Table B.2.
Note 3. Evaluation of uncoated steel surfaces before application of paints based rust steel surface cleanliness - Visual assessment - Part 1. uncoated
Steel surface and the overall removal of previous coatings after the steel surface rust grades and preparation grades (rust grades A, B, C and D).
ISO 4628-1 defines the number and size of defects on the coating due to aging and the changes in the appearance of uniformity assessment systems, and almost
General said the assessment system. The assessment system is suitable for natural and artificial accelerated aging caused by exposure defects and uniform changes such as color change
Of, for example. yellowing.
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 4628-1.2003 as well as the number and size of uniform changes in appearance degree of paints and varnishes Evaluation of degradation of coatings defects
Identification - Part 1. General and identification system (Paintsandvarnishes-Evaluationofdegradationofcoatings-Des-
ignationofquantityandsizeofdefects, andofintensityofuniformchangesinappearance-Part 1.
Generalintroductionanddesignationsystem)
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Rusty grade Ri degreeofrusting
Rust coating (through the coating and corrosion can be observed under the coating rust) Evaluation.
4 Evaluation
1 to 5 according to FIG rust coating was rated level Ri. Table 1 shows the different rust grades Ri corresponding rust area.
If desired, the assessment can not be observed visually rust under the coating method of rating, agreed by the relevant parties.
If the area to be assessed in different parts of the rust grade is inconsistent, it should describe each site appeared rusty levels.
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