GB 12607-1990
Replaced
GB/T 9791-2025
Active
National standards
GB/T 9791-2025 Metallic and other inorganic coatings—Chromate conversion coatings on zinc,cadmium,aluminium-zinc alloys and zinc-aluminium alloys—Test methods
GB/T 9791-2025 Metallic and other inorganic coatings—Chromate conversion coatings on zinc,cadmium,aluminium-zinc alloys and zinc-aluminium alloys—Test methods
Basic Information
Standard Code:
GB/T 9791-2025
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Material protection
ICS Name:
Surface treatment
Publish Date:
2025-10-31
Implement Date:
2026-05-01
Publisher:
国家市场监督管理总局、国家标准化管理委员会
Technical Committee:
全国金属与非金属覆盖层标准化技术委员会(SAC/TC 57)
Pages:
16 pages
Scope
本文件描述了下列项目的测试方法:
——无色铬酸盐转化膜的存在;
——锌、镉、铝(55% Al,容许范围54%~56%)-锌合金和锌-铝(5%Al)合金的无色和有色铬酸盐转化膜中六价铬存在的定性测量;
——锌和镉上单位面积的总铬含量;
——无色和有色铬酸盐转化膜的单位面积膜质量;
——铬酸盐转化膜的附着力;
——铬酸盐转化膜的耐蚀性。
本文件适用于下列铬酸盐转化膜的测试:
——用化学或电化学方法生成的,含有不同比例的三价铬和六价铬的无色和有色铬酸盐转化膜;
——无任何附加覆盖层(例如:油膜、水基或溶剂型聚合物膜或蜡膜)的铬酸盐转化膜。
Development Information
Drafting Units:
中国机械总院集团武汉材料保护研究所有限公司、惠博新材料股份有限公司、广西国强智能科技有限公司、浙江五源科技股份有限公司、宏正(福建)化学品有限公司、杭州和韵科技有限公司、广东凯盟钝化防锈技术有限公司、保定奥琦圣新型金属材料制造有限公司、浙江建业幕墙装饰有限公司、山东齐星铁塔有限公司、芜湖众源复合新材料有限公司、佛山市中科仁昌科技有限公司、深圳市生利科技有限公司
Drafting Persons:
张德忠、刘传烨、刘晓辉、杨建辉、李志国、陆国建、叶金堆、易娟、王文豪、颜昌利、章文笔、刘子灿、祝闻、卢坤鹏、丁世明、梁光、晋华明、赵留伟、赵涛、李翀、田长春、王小锋
Replace the following standards
Referenced Standards
GB/T 2423.4-1993 Basic environmental testing procedures for electric and electronic products—Test Db:Damp heat, cyclic
GB/T 2423.4-2008 Environmental testing for electric and electronic products—Part 2:Test method—Test Db:Damp heat,cyclic(12 h+12 h cycle)
GB/T 9792-2003 Conversion coatings on metallic materials—Determination of coating mass per unit area—Gravimetric methods
GB/T 9800-1988 Chromate conversion coatings on electroplated zinc and cadmium coatings
GB/T 10125-1997 Corrosion tests in artificial atmospheres—Salt spray tests
GB/T 10125-2012 Corrosion tests in artificial atmospheres—Salt spray tests
GB/T 10125-2021 Corrosion tests in artificial atmospheres—Salt spray tests
Adopt standards
ISO 3613:2021
Related Standards
GB/T 12612-1990
Replaced
GB/T 12612-1990 General specification for multifunctional solution of steel and iron surface treatment
GB/T 3138-1995
Replaced
GB/T 3138-1995 Terminology for metallic coating, chemical treatment and related process
GB/T 4955-1997
Replaced
GB/T 4955-1997 Metallic coatings—Measurement of coating thickness—Coulometric method by anodic dissolution
GB/T 17456-1998
Replaced
GB/T 17456-1998 Ductile iron pipes—External zinc-spray coating
GB/T 17460-1998
abolished_transferred