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GB/T 26036-2020: Aluminum Alloy Die Forgings for Automobile Wheels Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 26036: Historical versions
Similar standardsGB/T 26036-2020: Aluminum Alloy Die Forgings for Automobile Wheels---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/GBT26036-2020GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.150.10 H 61 Replacing GB/T 26036-2010 Aluminum Alloy Die Forgings for Automobile Wheels ISSUED ON: JUNE 2, 2020 IMPLEMENTED ON: APRIL 1, 2021 Issued by: State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword ... 3 1 Scope ... 5 2 Normative References ... 5 3 Terms and Definitions ... 7 4 Requirements ... 7 5 Test Methods ... 13 6 Inspection Rules ... 17 7 Marking, Packaging, Transportation, Storage and Quality Certificate ... 22 8 Order Form (or contract) Content ... 24 Appendix A (normative) Test Method of Resistance to Crushed Stone Impact of Paint Film ... 25 Aluminum Alloy Die Forgings for Automobile Wheels1 ScopeThis Standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation, storage, quality certificate and order form (or contract) content of aluminum alloy die forgings for automobile wheels. This Standard is applicable to aluminum alloy automobile wheels (hereinafter referred to as wheels).2 Normative ReferencesThe following documents are indispensable to the application of this document. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document. GB/T 231.1 Metallic Materials - Brinell Hardness Test - Part 1: Test Method GB/T 629 Chemical Reagent - Sodium Hydroxide GB 1787-2018 Aviation Piston Engine Fuels GB/T 2933 Wheels and Rims for Pneumatic Tyres - Vocabulary, Designation and Marking GB/T 3190 Chemical Composition of Wrought Aluminum and Aluminum Alloys GB/T 3199 Wrought Aluminum and Aluminum 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 3487 Rims for Passenger Car GB/T 5209 Pains and Varnishes - Determination of Resistance to Water - Water Immersion Method GB/T 5334 Performance Requirements and Test Methods of Passenger Car Wheels GB/T 5909 Performance Requirements and Test Methods of Commercial Vehicles Wheels GB/T 6519 Process for Ultrasonic Inspection of Wrought Aluminum Alloy Products GB/T 6682 Water for Analytical Laboratory Use - Specification and Test Methods GB/T 7999 Standard Method for Direct Reading Spectrometric Analysis of Aluminum and Its Alloys GB/T 8005.1 Aluminum and Aluminum Alloy Terms and Definitions - Part 1: Product and Method of Processing Treatment GB/T 8013.3 Anodic Oxide Coatings and Organic Polymer Coatings on Aluminum and Its Alloys - Part 3: Organic Polymer Coatings GB/T 9286 Paints and Varnishes - Cross Cut Test for Films GB/T 9761 Paints and Varnishes - Visual Comparison of the Color of Paints GB/T 9769 Rim Contour Measure GB/T 10125 Corrosion Tests in Artificial Atmospheres - Salt Spray Tests GB/T 13893.2 Paints and Varnishes - Determination of Resistance to Humidity - Part 2: Condensation (in-cabinet exposure with heated water reservoir) GB/T 15704 Road Vehicles - Light Alloy Wheels - Impact Test Procedure GB/T 16865 Test Pieces and Method for Tensile Test for Wrought Aluminum and Magnesium Alloys Products GB/T 17432 Methods for Sampling for Analyzing the Chemical Composition of Wrought Aluminum and Aluminum Alloys GB/T 18851.1 Non-destructive Testing - Penetrant Testing - Part 1: General Principles GB/T 20975 (all parts) Methods for Chemical Analysis of Aluminum and Aluminum Alloys GB/T 30512 Requirements for Prohibited Substances on Automobiles GB/T 31961 Rims for Truck-bus QC/T 240 Disc Wheels - Measurement Methods for Dimensional Characteristics of Attachment on Hub QC/T 242 Static Unbalance Requirements and Test Methods of Vehicle Wheels 4.11.2 The requirements for dynamic bending fatigue performance and dynamic radial fatigue performance of commercial vehicle wheels shall comply with the requirements of GB/T 5909. 4.12 Impact Performance The visible cracks of the passenger car wheels shall not penetrate the cross section of the central part of the wheels. The central part of the wheels shall not be separated from the rims; within 1 min, the tire pressure shall not completely leak out. The deformation of the passenger car wheels, or the fracture of the rim section caused by direct impact by the hammer is allowed. 4.13 Appearance Quality 4.13.1 The surface of wheels shall be smooth and flat; there shall not be obvious burrs, sharp edges and insufficient filling. 4.13.2 The paint film shall have no obvious defects like blistering, sagging, orange peel, exposed base or scratches. 4.13.3 On the installation surface, center hole and nut seat surface of the wheels, there shall be no dripping paint. 4.13.4 The marking of wheels shall be intact and clear.5 Test Methods5.1 Chemical Composition Conduct the test in accordance with the methods specified in GB/T 20975 or GB/T 7999. The arbitration analytical method shall comply with the methods specified in GB/T 20975. 5.2 Prohibited Substances Conduct the test in accordance with the methods specified in GB/T 30512. 5.3 Dimensions 5.3.1 The inspection of rim contour shall be conducted in accordance with the methods specified in GB/T 9769. 5.3.2 The inspection of flatness of wheel attachment face shall be conducted in accordance with the methods specified in QC/T 243. 5.3.3 The inspection of bolt hole position shall be conducted in accordance with the methods specified in QC/T 240. Conduct the test in accordance with the methods specified in GB/T 8013.3, or, it shall be determined through negotiation between the demand-side and the supply-side; indicated in the order form (or contract). 5.9.4 Chromatic aberration Conduct the test in accordance with the methods specified in GB/T 9761. 5.9.5 Pencil hardness Conduct the test in accordance with the methods specified in GB/T 8013.3. 5.9.6 Resistance to crushed stone impact Conduct the test in accordance with the methods specified in Appendix A. 5.9.7 Dry adhesion Conduct the test in accordance with the methods specified in GB/T 9286. 5.9.8 Resistance to water Resistance to water shall be tested in accordance with the methods specified in GB/T 5209. After the test, the sample shall be placed at room temperature for 24 h, then, in accordance with the methods specified in GB/T 9286, conduct dry adhesion test. 5.9.9 Resistance to humidity and heat Resistance to humidity and heat shall be tested in accordance with the methods specified in the constant temperature and humidity test in GB/T 8013.3. After the test, the sample shall be placed at room temperature for 24 h, then, in accordance with the methods specified in GB/T 9286, conduct dry adhesion test. 5.9.10 Resistance to cold and heat cycles Paint film’s resistance to cold and heat cycles shall be tested in accordance with the following steps: a) Place the sample into a constant temperature and humidity chamber at the temperature of 90 °C ± 2 °C and the relative humidity of 20% ± 3%, maintain for 24h; b) Take out the sample, place it at room temperature for 0.5 h, then, place it into a cryogenic box at the temperature of -40 °C ± 2 °C, maintain for 24 h; c) Take out the sample, place it at room temperature for 0.5 h, then, place it into a constant temperature and humidity chamber at the temperature of 70 °C ± 2 °C and the relative humidity of 95% ± 3%, maintain for 3 h; 5.9.15 Interlayer adhesion, condensation resistance, filiform corrosion resistance, cyclic corrosion resistance and accelerated weather resistance 5.9.15.1 The test method of interlayer adhesion shall be determined by the demand- side and the supply-side through negotiation; indicated in the order form (or contract). 5.9.15.2 Condensation resistance test shall be conducted in accordance with the methods under constant humidity and condensation environment as specified in GB/T 13893.2. 5.9.15.3 The test of filiform corrosion resistance, cyclic corrosion resistance and accelerated weather resistance shall be conducted in accordance with the methods specified in GB/T 8013.3. 5.10 Fatigue Performance 5.10.1 The rated load of wheels shall be determined by the demand-side and the supply-side through negotiation; indicated in the order form (or contract). 5.10.2 The dynamic bending fatigue test and dynamic radial fatigue test of passenger car wheels shall be conducted in accordance with the methods specified in GB/T 5334. 5.10.3 The dynamic bending fatigue test and dynamic radial fatigue test of commercial vehicle wheels shall be conducted in accordance with the methods specified in GB/T 5909. 5.11 Impact Performance 5.11.1 In accordance with the rated load of the passenger car wheels, select tire with the maximum load capacity. The rated load of the wheels shall be determined by the demand-side and the supply-side through negotiation; indicated in the order form (or contract). 5.11.2 The impact test shall be conducted in accordance with the methods specified in GB/T 15704. 5.12 Appearance Quality Under incandescent lamp with the illumination intensity of 900 lx ~ 1,200 lx, the observer’s line of sight is approximately perpendicular to the observation surface; the distance between the eyes and the observation surface is 500 mm ~ 1,000 mm. Conduct visual observation of the surface of the wheels.6 Inspection Rules6.1 Inspection and Acceptance Inspection number of samples from the batch of products where the disqualified sample is located to conduct re-inspection. If the re-inspection result is all qualified, then, this batch shall be determined as qualified. If there are still samples with disqualified performance in the re-inspection result, then, this batch shall be determined as disqualified. 6.5.5 When the macrostructure of any sample is disqualified, take twice the number of samples from the batch of products where the disqualified sample is located to conduct re-inspection. If the re-inspection result is all qualified, then, this batch shall be determined as qualified. If there are still disqualified samples in the re-inspection result, then, this batch shall be determined as disqualified. 6.5.6 When the microstructure of any sample is disqualified, then, this batch shall be determined as disqualified. 6.5.7 When the non-destructive testing of any wheel is disqualified, then, this piece shall be determined as disqualified. 6.5.8 When the static unbalance of any wheel is disqualified, then, this piece shall be determined as disqualified. 6.5.9 When the inspection item of any paint film is disqualified, take twice the number of samples from the batch of products where the disqualified sample is located to conduct re-inspection. If the re-inspection result is all qualified, then, this batch shall be determined as qualified. If there are still samples with disqualified performance in the re-inspection result, then, this batch shall be determined as disqualified. 6.5.10 When the fatigue performance or impact performance of any wheel is disqualified, then, this batch shall be determined as disqualified. 6.5.11 When the appearance quality of any wheel is disqualified, then, this piece shall be determined as disqualified.7 Marking, Packaging, Transportation, Storage andQuality Certificate 7.1 Marking 7.1.1 Product marking The following marks (or labels) shall be printed on wheels that are qualified in the inspection: a) Manufacturer’s identification mark (name, symbol or trademark); b) Product name; c) Designation and state; d) Specifications of wheels; e) Batch No.; f) Quantity; g) Various performance analysis and inspection results; inspection seal of the supply-side’s quality inspection department; h) Serial No. of this Standard; i) Date of packaging (or exit-factory date).8 Order Form (or contract) ContentThe order form (or contract) ordering products listed in this Standard shall include the following content: a) Product name; b) Designation and state; c) Surface type; d) Specifications of wheels; e) Rated load; f) Quantity; g) Ultrasonic flaw detection level; h) Gloss value of paint film; i) Paint film thickness; j) Packaging requirements; k) Other paint film performance requirements or other special requirements; l) Serial No. of this Standard. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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