ASTM D() – 橡胶/塑料/铁件 磨损率试验标准. ASTM D(). Standard Test Method for Wear Rate and Coefficient of Friction of Materials in Self-Lubricated Rubbing Contact Using. ASTM D(04) – Download as PDF File .pdf), Text File .txt) or read online.
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Whether your business is local or global, we can ensure your products meet xstm, health, environmental, safety, and social accountability standards for virtually any market around the world. Each test consists of break-in for 40 h followed by a selected test duration, each at the same selected normal load and speed. Precision and Bias The user of this test atsm should determine to his own satisfaction whether the results of this test procedure correlate with?
NOTE 6—A chart recorder can be used to continuously record torque throughout the asrm. In cases where materials, products, or equipment are available only in inch-pound units, SI values in parentheses are for information only.
Send us a request Wilton UK: A number in parentheses indicates the year of last reapproval. Test materials are machined into a disk approximately 1.
Contact pressure, rotational velocity RPMand the number of cycles hours must be specified for each test. NOTE 2—Petroleum distillates, formerly d37022 as solvents, have been eliminated due to possible toxic effects. Typical spindle speed range is 10 to rpm. NOTE 4—Check compatibility of the test specimen cleaning procedure and reagents with the speci? Send us a request Need help or have a question?
Last previous edition approved in as D—94 The test sample is then weighed and measured, and the test begins. Load is obtained by application of dead weights to the Assurance Testing Inspection Certification.
Coefficient of Friction ASTM D
Formally confirming that your products and services meet all trusted external and internal standards. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. The specimen is fixed into the sample holder using a pin d7302 a bolt, and this assembly is inserted into the tester.
If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. NOTE 5—Calibrate torque meter such that the anticipated test torque is approximately two-thirds of calibration value.
Current edition approved Oct. Permission rights to photocopy the standard may also be secured from the ASTM website www. Mark the test specimen inside the raised test surface so subsequent measurements can be made at the same places. NOTE 1—This machine may also be used to measure coefficient of friction. An elapsed time indicator with reset feature to indicate motor running time should be included.
The mean c3702 velocity is related to spindle rotational speed: Wear in h round robins averaged 0.
Coefficient of Friction ASTM D3702
Inspection Validating the specifications, value and safety of your raw materials, products and assets. Wear rate can be calculated as either in. Torque the bolt to 6.
Certification Formally confirming that your products and services meet all trusted external and internal standards. This test method evaluates the performance of materials in rubbing contact under end use type conditions. Preparation asmt Apparatus 7. Polyamide Type at PV2: Need help or have a question? Global Reach Intertek is the industry leader with over 42, people in 1, locations in over countries.
Subscripts 2a, 2b, 2c, and 2d are the corresponding?