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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Users of this standard are expressly advised that determination atsm the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

Contact pressure, rotational velocity RPMand the number of cycles hours must be specified for each test. Preparation of Apparatus 7.

Coefficient of Friction ASTM D

It is generally believed that useful wear rate precision 1. A built-in tachometer provides speed indication. PV limit pressure x velocity is the point at which the material fails catastrophically. Load is obtained by application of dead weights to the In cases where materials, products, or equipment are available only in inch-pound units, SI values in parentheses are for information only. Certification Formally confirming that your products and services meet all trusted external and internal standards.

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Wear in h round robins averaged 0. Acetal homopolymer at PV1: Subscripts 2a, 2b, 2c, and 2d are the corresponding? Assurance Enabling you to identify and mitigate aetm intrinsic risk in your operations, supply chains and business processes.

Optional controlled pneumatic loading systems are available to replace applications of dead weight. The contact area is 1. Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

Originally approved in Polyamide Type at PV2: Weights are added to provide the desired contact pressure, and the rotational velocity is set. Torque the bolt to 6.

Individual reprints single or multiple copies of this standard may be obtained by contacting S3702 at the above address or at phonefaxor service astm. This test method evaluates the performance of materials in rubbing contact under end use type conditions. NOTE 3—Remove all solvents from the washer before testing.

Validating the specifications, value and safety of your raw materials, products and assets. NOTE 4—Check compatibility of the test specimen cleaning procedure and reagents with the speci?

Coefficient of Friction ASTM D3702

The specimen is fixed into the sample holder using a pin and a bolt, and this assembly is inserted into the tester. Due to copyright restrictions, we are not able to provide copies of standards. Your comments will receive careful consideration at a meeting of the responsible technical committee,1 which you may attend.

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Falex Friction and Wear test machine. Each test consists of break-in for 40 h followed by a selected test duration, each at the same selected normal load and speed.

Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards. The contact can be a test material against steel or against itself. The test sample is then weighed and measured, and the test begins. Through our network of over 43, people in 1, laboratories and asym in countries, Intertek provides quality and safety solutions to a wide range of industries around the world.

Send us a request Need help or have a question? Assurance Asfm Inspection Certification. Reagents and Materials 6. Refer to Table 1 to convert the speci? Typical wear rates for some commonly used materials at different PV levels are: