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QC/T 1140-2020: Technical Specifications for Remanufactured Automotive Components - Crankshaft 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 1140-2020: Technical Specifications for Remanufactured Automotive Components - Crankshaft---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/QCT1140-2020QC AUTOMOBILE INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 43.060.10 T 12 Technical Specifications for Remanufactured Automotive Components – Crankshaft ISSUED ON: DECEMBER 09, 2020 IMPLEMENTED ON: APRIL 01, 2021 Issued by: Ministry of Industry and Information Technology of PRC Table of ContentsForeword ... 6 1 Scope ... 7 2 Normative References ... 7 3 Terms and Definitions ... 8 4 Process Requirements ... 8 5 Performance Requirements ... 11 6 Test Methods ... 13 7 Inspection Rules ... 14 8 Marking, Packaging, Transportation and Storage ... 14 Appendix A (Informative) Production Process of Auto Parts Remanufactured Products ... 16 Technical Specifications for Remanufactured Automotive Components – Crankshaft1 ScopeThis document specifies the terms and definitions, process requirements, performance requirements, test methods, inspection rules, marking, packaging, transportation, and storage for the remanufactured products of automotive engine crankshaft. This document is applicable to remanufactured products of automotive engine crankshafts.2 Normative ReferencesThe following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) is applicable to this document. GB/T 1031 Geometrical Product Specifications (GPS) - Surface Texture: Profile Method - Surface Roughness Parameters and their Values GB/T 1184-1996 Geometrical Tolerancing - Geometrical Tolerance for Features without Individual Tolerance Indications GB/T 1958 Geometrical Product Specifications (GPS) - Geometrical Tolerance - Verification GB/T 6809.3 Reciprocating Internal Combustion Engines - Vocabulary of Components and Systems - Part 3: Main Running Gear GB 22128 Technical Specifications for End-of-Life Vehicles Collecting and Dismantling Enterprises GB/T 26989 Automobile Recovery - Terminology GB/T 28675 Remanufacturing of Automotive Components - Disassembly GB/T 28676-2012 Remanufacturing of Automotive Components – Classification GB/T 28677 Remanufacturing of Automotive Components - Cleaning classified, repaired and assembled, the performance indicators shall meet the requirements specified in Clause 5. 4.1.2 The production process of remanufactured products is shown in Figure A.1 of the Appendix. 4.2 Disassembly requirements 4.2.1 The disassembly of the crankshaft shall comply with the provisions of GB/T 28675. 4.2.2 Removable crankshaft accessories such as balance weights, oil plugs, flanges, gears, keys, etc. shall be removed to make them into a single part state. 4.2.3 Avoid damaging parts when disassembling. 4.2.4 When disassembling a crankshaft equipped with a separate balance weight, the corresponding mark shall be made before disassembling. 4.3 Cleaning requirements The cleaning of the crankshaft after disassembly shall comply with the provisions of GB/T 28677; and the oil dirt and sediment in the oil passage shall be thoroughly removed. 4.4 Testing and classification requirements 4.4.1 Testing requirements 4.4.1.1 Appearance inspection Visually inspect the surface condition of each journal of the crankshaft, and check whether there are defects such as cracks, scratches or strains, and threaded holes and thread wear. 4.4.1.2 Size inspection According to the requirements of the original design drawings, use a general measuring tool or a three-coordinate measuring instrument to detect the geometric accuracy of the crankshaft journal dimensional tolerance and form and position tolerance; and make a record. The dimensions to be inspected are as follows: a) Dimensions of crankshaft journals; b) The amount of runout of the spindle centreline; c) The parallelism of the main journal and the centreline of the connecting rod journal; 5.5 Magnetic particle testing The remanufactured crankshaft shall be subjected to magnetic particle testing in accordance with the provisions of 6.5; and cracks shall not be detected. 5.6 Cleanliness After removing metal chips and debris in the crankshaft lubricating oil passage and other positions, the cleanliness of the crankshaft shall meet the requirements of the manufacturer for the entire machine.6 Test Methods6.1 Surface hardness The hardness of the remanufactured crankshaft shall be measured according to the method specified in QC/T 481. 6.2 Surface roughness The surface roughness of the remanufactured crankshaft journal shall be measured according to the method specified in QC/T 481. 6.3 Dimensional and geometrical tolerances 6.3.1 When the length of the crankshaft is greater than 1.5m and the number of cranks is more than 6, intermediate auxiliary supports are allowed during the measurement process. 6.3.2 The geometric tolerances of the processed positions of the remanufactured crankshaft shall be inspected according to the methods specified in GB/T 1958. 6.4 Dynamic balance The dynamic balance of the crankshaft shall be inspected according to the method specified in QC/T 481. 6.5 Magnetic particle testing Magnetic particle testing of the crankshaft shall be carried out in accordance with the provisions of JB/T 6729. 6.6 Cleanliness The cleanliness of the crankshaft shall be measured in accordance with the provisions of QC/T 481. of GB/T 28678-2012. 8.1.2 The remanufactured product code shall be marked on the remanufactured crankshaft. 8.1.3 The remanufactured product mark shall be on the outer packaging of the remanufactured crankshaft that is sold separately. 8.2 Packaging 8.2.1 The packaging of the remanufactured crankshaft shall comply with the provisions of GB/T 28678-2012. 8.2.2 Before packaging the remanufacturing the crankshaft, it shall be cleaned again for anti-corrosion treatment. 8.2.3 Measures shall be taken to prevent moisture, and a fixing frame shall be set in the packing box to prevent the crankshaft from shaking and deforming. 8.3 Transportation During transportation, rain-proof, moisture-proof and protective measures shall be taken to prevent the product from being damp, bumped, deformed, and damaged. 8.4 Storage The storage and transportation environment of the remanufactured crankshaft shall be kept ventilated, dry, and clean. The unpackaged crankshaft shall be placed on the bracket or placed upright to prevent deformation and damage. The manufacturer shall ensure that the product shall not rust within 12 months from the date of leaving the factory. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of QC/T 1140-2020 be delivered?Answer: The full copy PDF of English version of QC/T 1140-2020 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of QC/T 1140-2020_English with my colleagues?Answer: Yes. 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