This standard specifies the test method for the wear resistance of finished shoe soles and molded soles (sheets). This standard is applicable to the test of the wear resistance of finished shoe soles and molded soles (sheets). GB/T 3903.2-1994 General test method for footwear Wear resistance test method GB/T3903.2-1994 Standard download decompression password: www.bzxz.net

UDC.685.3 - 620.17
National Standard of the People's Republic of China
GB/T3903.2-94
General test method for footwear--Test method of abrasion resistance1994-11-17 Issued
1995-08-01Implementation
National Technical Supervision
National Standard of the People's Republic of China
General test method for footwear--Test method of abrasion resistanceCeneral test melhod [or fontwea?Test snethod of abraslon 1 Mainly with the scope of application
This standard specifies the test method for the wear resistance of light-grained bottom and molded sheet (sheet). This standard can be used to test the wear resistance of the sheet and molded sheet. 2 Principle
GB/T3903.2---94
Generation G3005-3
The rotating wheel is vertically pressed on the sample, and the sample is tested with a certain load, a certain degree, and a certain time. The wear scar length is measured
3 The sample
3. The thickness of the bottom or flat test piece is m. 3.2 The group of samples shall not be less than the bottom or sheet. 3.3 Test treatment: In addition to the surface of the sample that affects the test result, the test surface is required to be flat, and the test is carried out in the laboratory for more than 4. 4 Test equipment
4.1 The front grinding test machine shall meet the following requirements; 4.1.1 The grinding wheel is a 20±0.1×4±0.11nun T12 wheel with 72 teeth, a tooth angle of 90±5, a tooth tip width of c.2±0.C5mm, a step tip coarse grain size R, = 3.2rm. Hardness HRC255, coaxiality of 0.03mm. 4.1.2 The grinding wheel speed is adjustable within the range of 10~300z/in. 4.1.3 The grinding wheel rotates clockwise and runs smoothly, and the radial runout is not greater than 0.05mm. 4.1.4 The load ratio between the wheel and the specimen is adjustable within 19.N. 4.1.5 The grinding wheel needs to be inspected once a year,
4. 1. 6 The test time is automatically controlled, with an accuracy of 0. min. 4. 1. 7 Balance Xiecheng 2000 B+ Accuracy 5 B4.2 Vernier K scale with a graduation of U.02mm,
5. Test parts
5.1 Load is 4.9N (special requirements can be selected within 19.6N). 5.2 Grinding wheel speed is 191±5r/min (special requirements can be selected within the test machine's allowable range). 5.3 Test time is 20min (special requirements can be selected). 5.4 Ambient temperature is home.
Approved by the National Technical Supervision Commission on November 17, 1994 and implemented on August 1, 1995
6 Test steps
GB/ T3903-2--94
61 Adjust all parts of the test wheel to the correct position, and run the wheel idle for 20 minutes. 6.2 Put the test wheel on the left end of the test machine balance and adjust the wear part of the sole to the level. 6.3 Adjust the grinding wheel to align it with the flat surface of the specimen (the area is sufficient for wear). The grinding wheel is supported on the upper left of the specimen seat. 6.4 Balance the two tanks (the pointer points to the same value). Add the negative load required by the test condition (such as 50N load for 4.0N). At this time, the contact pressure between the specimen and the grinding wheel is the specified value. 6.5 Adjust the grinding wheel height so that the balance pointer points to the correct position, tighten the tightening handle of the rear tightening wheel shaft, and adjust the time selection switch to the required value. 6.7 Turn on the machine, and when the grinding wheel speed reaches the specified value, the time display disappears, and the test officially begins. 6.8 After the testing machine stops automatically after the specified time, measure the length of the two sides of the wear mark with a caliper. 6.9 If a defective sample is found during the test, stop the test immediately. Clean the contaminated grinding wheel with an organic solvent. 7 Test results
7.1 The test results are expressed in meters of the wear mark, with the effective figures to one decimal point. 7.2 Each sample should be measured at least two places, and the arithmetic mean of the four data at the two places. If the wear is a trapezoid, the long side shall not be greater than the short side by 10 yuan. 7.3 The maximum allowable error of each test number to the average value is ± 10%. If it exceeds, a new test shall be conducted. 7.4 The test results of each sample shall be expressed separately. 8 Test report
8.1 Indicate that the test is carried out in accordance with this standard,
8.2 Sample number, name, specification, material, production (or unit) and wear part. 3 Whether the sample is pre-treated or not. 4. Test load, grinding wheel rotation, time, test room temperature. 5. Test results.
8.6 Test personnel and date.
Additional remarks,
This standard was proposed by China Light Industry General Associationbzxz.net
GB/T3903.2--94
This standard is under the jurisdiction of the National Shoes Standardization Center. This standard was drafted by the Shoes Industry Research Institute of the Ministry of Light Industry. The main drafters of this standard are Zhou Jing, Fan Jiao, and Li Zhushi.
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