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GB/T 33823-2017 English PDF (GBT33823-2017)

GB/T 33823-2017 English PDF (GBT33823-2017)

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GB/T 33823-2017: Aluminum alloy die forgings for control arms of passenger vehicles

This Standard specifies the requirements, test methods, inspection rules, marks, packaging, transport, storage, quality certificate and order (contract) of aluminum alloy die forgings for control arms of passenger vehicle.
GB/T 33823-2017
GB
NATIONAL STANDARD OF
THE PEOPLE REPUBLIC OF CHINA
ICS 77.150.10
H 61
Aluminum alloy die forgings for
control arms of passenger vehicle
ISSUED ON. MAY 31, 2017
IMPLEMENTED ON. DECEMBER 1, 2017
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine;
Standardization Administration Committee.
3. No action is required - Full-copy of this standard will be automatically and immediately delivered to your EMAIL address in 0~60 minutes.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Requirements ... 5
5 Test methods ... 7
6 Inspection rules ... 8
7 Mark, packaging, transport, storage and quality certificate... 11
8 Order (or contract) content ... 12
Foreword
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 Nonferrous Metals of Standardization Administration of China (SAC/TC 243).
Main drafting organizations of this Standard. Suzhou Nonferrous Metals
Research Institute Co., Ltd., Jiangsu CNPT-Rabily Industrial Co., Ltd.., Wuhu Hetian Automobile Industry Co., Ltd., China First Automobile Co., Ltd.
Technology Center, Dongfeng Motor Corporation, Chongqing Changan
Automobile Co., Ltd., Nonferrous Metals Technology and Economic Research Institute, Guangdong Industrial Analysis and Testing Center, National
Nonferrous Metals Quality Supervision and Inspection Center.
Main drafters of this Standard. Guo Shijie, Zhang Hai, Wang Lexi, Chen Lai, Yang Chunxiu, Wen Cheng, Jin Guangtao, Oan Qijun, Zhang Yihe, Wang
Zezhong, Liu Bo, Xi Huan, Zhang Xinhong, Li Pu.
Aluminum alloy die forgings for
control arms of passenger vehicle
1 Scope
This Standard specifies the requirements, test methods, inspection rules, marks, packaging, transport, storage, quality certificate and order (contract) of aluminum alloy die forgings for control arms of passenger vehicle.
This Standard is applicable to aluminum alloy die forgings for control arms of passenger vehicle (hereinafter referred to as the forging).
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 231.1, Metallic materials - Brinell hardness test - Part 1. Test method GB/T 3190, Wrought aluminium and aluminium alloys - Chemical
composition limits
GB/T 3199, Wrought Aluminium and Aluminium Alloy Products - Packing,
Marking, Transporting and Storing
GB/T 3246.1, Inspection method for structure of wrought aluminum and
aluminum alloy products Part 1. Inspection method for microstructure
GB/T 3246.2, Inspection method for structure of wrought aluminum and
aluminum alloy products - Part 2. Inspection method for macrostructure
GB/T 7999, Optical emission spectrometric analysis method of aluminum
and aluminum alloys
GB/T 8545-2012, Die forgings of aluminium and aluminium alloy -
Dimensional tolerance and machining allowance
GB/T 16865, Test pieces and method for tensile test for wrought aluminium and magnesium alloys products
pores, folds, segregation, aggregation and non-metallic inclusions.
4.6.3 In any section of the forging, there is no oxide film defect that is greater than 0.3 mm.
4.6.4 The cross section of the product is not allowed to have coarse
recrystallization grain. The depth of the coarse recrystallization grain layer in the surface layer shall not exceed 3 mm. At the parting line, the depth of the coarse recrystallization grain layer shall not exceed 8 mm; the width shall not exceed 7 mm.
4.7 Microstructure
The microstructure is not allowed to over-burn.
4.8 Appearance quality
4.8.1 A slight bump, scratches, pressure pit, scratches and other defects are allowed.
4.8.2 The forging on the forging surface is not allowed to repair; or material shortage, peelings, bubbles, cracks, layers, stacks and other defects are not allowed.
4.9 Banned substance
The forging shall meet requirements for automobile banned substances
specified in GB/T 30512.
5 Test methods
5.1 Chemical composition
The analysis method for chemical composition shall comply with GB/T 20975 or GB/T 7999. The arbitration analysis shall use the method specified in GB/T 20975.
5.2 Size deviation
The measurement of size deviation of the forging shall comply with GB/T 8545-2012.
5.3 Mechanical properties
The test method for tensile mechanical properties at room temperature shall comply with GB/T 16865.
5.4 Brinell hardness
The test method for Brinell hardness shall comply with GB/T 231.1.
5.5 Macrostructure
The test method for macrostructure shall comply with GB/T 3246.2.
5.6 Microstructure
The test method for microstructure shall comply with GB/T 3246.1.
5.7 Appearance quality
Appearance quality is visually inspected under natural scattered light. The fluorescence penetration test shall be carried out according to GB/T 18851. 5.8 Banned substance
The test method for banned substance shall be carried out according to GB/T 30512.
6 Inspection rules
6.1 Inspection and acceptance
6.1.1 The forging shall be inspected by the supplier to ensure that the product quality in line with this Standard and the order (or contract)
requirements. Fill in the quality certificate.
6.1.2 The purchaser shall inspect the product received in accordance with the provisions of this Standard. When the inspection results do not comply with this Standard and the order (or contract), it shall be put forward in written form by the supplier and solved by the supplier and the purchaser via
negotiation. The objection to the appearance quality and size deviation shall be put forward within one month from the date of receipt of the product. Any objection to other performance shall be put forward within 3 months from the date of receipt of the product. For arbitration, it may entrust an organization approved by the supplier and the purchaser. The sampling shall be carried out by the supplier and the purchaser at the purchaser?€?s.
6.2 Batch
The forging shall be submitted in batch for acceptance. Each batch shall consist of the products of same designation, status and same thermal
treatment furnace number. The number of each batch shall be confirmed by the supplier.
6.3 Metering
7 Mark, packaging, transport, storage and quality
certificate
7.1 Mark
7.1.1 The packaging box mark of the forging shall comply with GB/T 3199. 7.1.2 On the qualified die forging, it shall print the following marks or labels. a) alloy designation and supply status;
b) thermal treatment number;
c) product?€?s mark;
d) batch number or date of production;
e) the inspection seal of supplier?€?s quality inspection department or
signature (or seal) of the inspector.
7.2 Packaging
The product?€?s packaging shall comply with GB/T 3199. Particular
requirements shall be confirmed by the supplier and the purchaser via
negotiation and indicated in the order (or contract).
7.3 Transport and storage
The product?€?s transport and storage shall comply with GB/T 3199.
7.4 Quality certificate
Each batch of products shall be attached with product quality certificates, indicating.
a) supplier?€?s name;
b) product?€?s name;
c) designation and status;
d) furnace number, batch number, thermal treatment number and date of
manufacture;
e) weight or number of pieces;
f) analysis inspection results of each item;

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