GB/T 37603-2019 English PDF (GBT37603-2019)
GB/T 37603-2019 English PDF (GBT37603-2019)
GB/T 37603-2019: Medium temperature brazing filler metals of aluminum alloys
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
Medium temperature brazing filler metals of aluminum
ISSUED ON: JUNE 04, 2019
IMPLEMENTED ON: MAY 01, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Requirements ... 5
4 Test methods ... 7
5 Inspection rules ... 8
6 Marks, packaging, transport, storage and quality certificate ... 9
7 Contract (or order sheet) ... 11
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009. This Standard was proposed by China Nonferrous Metals Industry Association. This Standard shall be under the jurisdiction of National Technical Committee on Non-ferrous Metal of Standardization Administration of China (SAC/TC 243). The drafting organizations of this Standard: Beijing Institute of Nonferrous Metals and Rare Earth Applications, The 14th Research Institute of China Electronics Technology Group Corporation, China Aviation Industry Corporation Sixty-one Research Institute, Guangdong Institute of Welding Technology. Main drafters of this Standard: Liu Xu, Zhang Guoqing, Feng Zhanying, Wang Xiang, Guo Feifei, Cao Huili, Luo Xi, Feng Xingmei, Cai Zhihong, Tang Chao, Yuan Linlin, Cai Zhengxu, Wang Feng, Chen Xiaoyu, Wu Dongxu, Liu Fuping. Medium temperature brazing filler metals of aluminum
This Standard specifies requirements, test methods, inspection rules and marks, packaging, transport, storage, quality certificate and contract (or order sheet) for medium temperature brazing filler metals of aluminum alloys for electronics industry use.
This Standard is applicable to medium temperature brazing filler metals of aluminum alloys for electronics industry use (hereinafter referred to as brazing filler metal).
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 1425, Determination of Melting Temperature Range for Precious
Metals and Their Alloys - Testing Method of Thermal Analysis
GB/T 3190, Wrought aluminium and aluminium alloys - Chemical
GB/T 3199, Wrought aluminium and aluminium alloy products - Packing,
marking, transporting and storing
GB/T 8170, Rules of rounding off for numerical values & expression and
judgement of limiting values
GB/T 17432, Methods for sampling for analyzing the chemical composition of wrought aluminum and aluminum alloys
GB/T 20975 (all parts), Chemical analysis methods of aluminium and
calculating “Al” content, take the sum of analysis values of regular analysis elements and analysis values of irregular analysis elements that are suspected as excessive as “sum of element contents”.
4.1.2 Use rounding-off comparison method for determination of analysis values. Rounding-off rules for values are in accordance with relevant provisions of GB/T 8170. Number of revisions shall be consistent with limit digits specified in GB/T 3190.
4.2 Size deviation
It shall use measuring tool of corresponding precision to measure size deviation of brazing filler metal.
4.3 Appearance quality
Under natural scattered light, visually inspect appearance quality. When necessary, it may use size measuring tool to define defect size. Determine defect depth through grinding.
4.4 Melting temperature
Determination method for melting temperature of brazing filler metal is in accordance with provisions of GB/T 1425.
5 Inspection rules
5.1 Inspection and acceptance
5.1.1 Product shall be inspected by supplier to ensure product quality complies with provisions of contract (or order sheet) of this Standard. Supplier fills in quality certificate.
5.1.2 Purchaser shall inspect products received according to provisions of this Standard. When inspection results fail to comply with provisions of contract (or order sheet) of this Standard, it shall be proposed in written form to supplier, and it shall be solved by supplier and purchaser through negotiation. Objections to appearance quality and size shall be proposed within one month since products are received. Objections to other performances shall be proposed within three months since products are received. If arbitration is required, it may entrust an authority recognized by supplier and purchaser to perform the arbitration. Perform sampling together at purchaser’s site.
Brazing filler metals shall be submitted for acceptance in batches. Each batch certificate
6.1.1 Product marks
Each batch of brazing filler metals shall have paper label, printed with following information:
c) furnace number or batch number;
e) inspection seal of supplier’s technical supervision department (or
signature or seal of quality inspector).
6.1.2 Mark of packaging box
Mark of product’s packaging box shall comply with provisions of GB/T 3199. 6.2 Packaging, transport, storage
Packaging, transport, storage of brazing filler metal shall comply with provisions of GB/T 3199.
6.3 Product quality certificate
Each batch of products shall be attached with quality certificate, indicating: a) supplier’s name;
b) product name;
c) product designation;
d) furnace number or batch number;
f) delivery state;
g) contract number;
h) net weight and number of pieces;