QC/T 710-2004 PDF EnglishUS$70.00 · In stock · Download in 9 seconds
QC/T 710-2004: Test method of compression load for automobile weather-strips Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
QC/T 710-2004: Test method of compression load for automobile weather-strips---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/QCT710-2004AUTOMOTIVE INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA Test Method of Compression Load for Automobile Weather-strips ISSUED ON: OCTOBER 20, 2004 IMPLEMENTED ON: APRIL 01, 2005 Issued by: National Development and Reform Commission Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Definition ... 4 4 Instruments and apparatuses ... 4 5 Sample and state adjustment ... 5 6 Test steps ... 5 7 Test result expression ... 6 8 Test report ... 6ForewordThis Standard was proposed by the National Technical Committee of Auto Standardization. This Standard shall be under the jurisdiction of National Technical Committee of Auto Standardization. The drafting organizations of this Standard: Guizhou Guihang Automobile Components Co., Ltd. Hongyang Seal Components Co., Ltd., Shanghai SAIC- METZELLER Sealing Systems Co., Ltd., Tianjin Star Light Rubber and Plastic Co., Ltd., Beijing Wanyuan Jinde Automobile Sealing Products Co., Ltd., Xiamen Baiji Industrial Co., Ltd. Company, Chongqing Yifeng Automobile Sealing Co., Ltd., Hubei Nuoke Automobile Sealing Strip Co., Ltd. The drafters of this Standard: Hu Zhugeng, Chen Haiyan, Hao Jie, Ma Junli, He Wenbing, Deng Mingxiang, Yu Gangli. Test Method of Compression Load for Automobile Weather-strips1 ScopeThis Standard specifies the test method of compression load for automobile weather-strips. This Standard applies to the test of compression load for automobile weather- strips.2 Normative referencesThe terms in the following documents become the terms of this Standard by reference to this Standard. For dated references, all subsequent amendments (not including errata content) or revisions do not apply to this Standard. However, parties to agreements that are based on this Standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest edition applies to this Standard. GB/T 2941, Standard temperature, humidity and time for environmental regulation and testing of rubber samples (eqv ISO471:1983) HG/T 2369, Rubber and plastic tensile testing machine technical conditions GB/T 8170, Rules of rounding off of numerical values3 Definition3.1 Compression load The force value when a sealing strip of certain length is compressed to a certain height (or a certain amount of compression) at a predetermined speed.4 Instruments and apparatuses4.1 Tensile testing machine The tensile testing machine shall comply with the relevant requirements of HG/T 2369; its measuring accuracy shall be class-A. 4.2 Test device The test device consists of upper tooling and lower tooling, and its structure is designed according to the product structure. If there is no special regulation, the structure of Figure 1 is recommended.5 Sample and state adjustment5.1 Except for special requirements, three samples of length 100 mm ± 2 mm shall be taken from the finished products respectively. 5.2 The time interval between the sample and vulcanization and the adjustment of the sample before the test shall be carried out in accordance with the provisions of GB/T 2941. 5.3 Before the test, the sample shall be parked for at least 3 hours in an environment where the temperature is (23 ± 2) °C and the relative humidity is (50 ± 5) %. The sample shall not be pressurized during the parking period. Figure 1 -- Schematic diagram of the compression load test device6 Test steps6.1 According to the product test requirements, select the test mode, set the test speed, compression height and other parameters. Except for special Upper tooling Sample Lower tooling Double-sided tape Benchmark Benchmark Benchmark Benchmark provisions of the product, the test speed is set to 30 mm/min. 30% of the height of the sealing part can be used as the reference compression displacement height. 6.2 Install the upper and lower toolings on the tensile tester; during installation, the load line that is applied in the test shall match the centerline of the sample. 6.3 During measurement, the upper plane of the lower test tooling or the upper end of the flange is usually used as the compression displacement reference (see Figure 1). 6.4 Install the sample and start the test machine. Use the pressing board to compress the sample to a predetermined height at a specified speed; record the relationship between the compression load and the deformation.7 Test result expressionTake the arithmetic mean of all the test data as the test result; round the calculation result to one decimal place according to GB/T 8170.8 Test reportThe test report shall contain the following contents: a) test name, number: b) number of this Standard; c) source of the sample; d) test conditions: compression speed, compression height and other relevant parameters; e) device name and number: f) indicator value; g) test result; h) tester and date. __________ END __________ ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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