GB/T 32790-2016 English PDF
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GB/T 32790-2016: Methods for Evaluating the Weld Quality of Seam Welds in Aluminium and Aluminium Alloy Extrusion
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GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.040.99 Z 24 Methods for Evaluating the Weld Quality of Seam Welds in Aluminium and Aluminium Alloy Extrusion Issued on: AUGUST 19, 2016 Implemented on: JULY 1, 2017 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of the People's Republic of China.
Table of Contents
Foreword ... 3 1 Scope ... 4 2 Normative References ... 4 3 Etching Method ... 4 4 Breaking Method ... 4 5 Flaring test... 7 6 Tensile Method ... 9 7 Test report ... 10Foreword
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 the National Standardization Technical Committee on Nonferrous Metals (SAC/TC 243). The main drafting organizations. Liaoning Zhongwang Holdings Limited, Guangzhou Research Institute of Nonferrous Metals, Shandong Yancon Light Alloy Co., Ltd., China Nonferrous Metals Techno-Economic Research Institute, Longkou Conglin Aluminium Co., Ltd., Northeast Light Alloy Co., Ltd., Southwest Aluminium (Group) Co., Ltd., Jilin Midas Alluminium Co., Ltd., General Research Institute for Nonferrous Metals, Guangdong Haomei Aluminium Co., Ltd., Guangdong Huachang Aluminium Factory Co., Ltd. and Fujian Nanping Aluminium Co., Ltd. The main drafters of this Standard. Ma Shusheng, Gai Hongtao, Huang Xianzhi, Wang Zhibo, Ge Lixin, Wang Mingkun, Gao Xinyu, Jiang Wei, Wang Lichen, Li Pu, Xiang Shengqian, Pan Weichen, Chen Junming and Li Honglin. Methods for Evaluating the Weld Quality of Seam Welds in Aluminium and Aluminium Alloy Extrusion1 Scope
This Standard specifies the test method at room temperature for evaluating the weld quality of seam welds in aluminium and aluminium alloy extrusion. This Standard applies to the test of the weld quality of seam welds in aluminium and aluminium alloy (hereinafter referred to as the weld quality).2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition dated applies to this document. For undated references, the latest edition of the referenced document (including any amendments) applies to this Standard. GB/T 3246.2 Inspection Method for Structure of Wrought Aluminum and Aluminum Alloy Products – Part 2. Inspection Method for Macrostructure GB/T 16865 Test Pieces and Method for Tensile Test for Wrought Aluminium and Magnesium Alloys Products3 Etching Method
It shall be conducted as specified in GB/T 3246.2.4 Breaking Method
4.1 Method summary Conduct the breaking test by applying force on the seam welds in the extrusion of test pieces; make the test pieces bend, deform significantly or break; then determine the weld quality of seam welds in the extrusion in accordance with whether the seam welds in the extrusion breaks or the morphology of fracture. The method applies to the test pieces in the artificial ageing state. 4.2 Test apparatus 4.2.1 Tester. hydraulic or mechanical pressure tester or universal material testing machine. Determine the weld quality in accordance with 4.5.2 to 4.5.5. 6.2 Test method for tensile property 6.2.1 Method summary Conduct the tensile test for the test pieces containing seam welds; and determine the weld quality in accordance with the results of the tensile test. 6.2.2 Test apparatus It shall be as specified in accordance with GB/T 16865. 6.2.3 Preparation of test pieces Fabricate test pieces in accordance with GB/T 16865; and make the seam welds locate in the central part of the parallel section of test pieces. 6.2.4 Test procedure It shall be as specified in GB/T 16865. 6.2.5 Results evaluation The weld quality is determined to be qualified if the tensile test results meet the specifications of relevant standards; or else, it is unqualified.7 Test report
The test report shall include the following content. a) the number of this Standard; b) the identification of materials and test pieces; c) the type of test pieces; d) the test methods (etching method, breaking method, flaring method, tensile method – fracture test method and tensile method – tensile property test method); e) the test speed; f) the diagram of seam welds’ positions; g) the testing equipment; h) the test results; ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
