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ASTM D3702 PDF

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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Originally approved in Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards. Typical spindle speed range is 10 to rpm. Typical wear rates for some commonly used materials at different PV levels are: Load is obtained by application of dead weights to the The contact can be a test material against steel or against itself.

The test sample is then weighed and measured, and the test begins. Standards can be obtained from appropriate standards authorities. Each test consists of break-in for 40 h followed by a selected test duration, each at the same selected normal load and speed.

Contact pressure, rotational velocity RPMand the number of cycles hours must be specified for each test. The user of this test method should determine to his own satisfaction whether the results of this test procedure correlate with?

Last previous edition approved in as D—94 In cases where materials, products, or equipment are available only in inch-pound units, SI values in parentheses are for information only.

Torque the bolt to 6. It is generally believed that useful wear rate precision 1. The test specimen is machined from a larger sample of the test material. Certification Formally confirming that your products and services meet all trusted external and internal standards. Inspection Validating the specifications, value and safety of your raw materials, products and assets.

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The lever arm may be balanced to compensate for the weight of the stationary washer. Refer to Table d3072 to convert the speci?

Coefficient of Friction ASTM D3702

Send us a request Need help or have a question? 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.

This test data would be used for the design of gears and bushings. Wear rate can be calculated as either in.

Precision and Bias Each user should select a solvent that can meet applicable safety requirements and thoroughly clean machine parts. Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes.

The contact area is 1. Current edition approved Oct. Test durations were h, except for round robin 1 where they ranged from to h. Validating the specifications, value and safety of your raw materials, products and assets. Permission rights to photocopy the standard may also be secured from the ASTM website www.

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

This test method evaluates the performance of materials in rubbing contact under end use type conditions.

Acetal homopolymer at PV1: Polyamide Type at PV2: Acetal homopolymer at PV2: Test materials are machined into a disk approximately 1.

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Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

Falex Friction and Wear test machine. Summary of Test Method 3. Assurance Testing Inspection Certification. Assurance Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. No further reproductions authorized. Whether your business is local or global, we can ensure your products meet quality, health, environmental, safety, and social accountability standards for virtually any market around the world.

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Need help or have a question? Reagents and Materials 6.

NOTE 4—Check compatibility of the test specimen cleaning procedure and reagents with the speci? NOTE 1—This machine may also be used to measure coefficient of friction.

Coefficient of Friction ASTM D

A break-in period, typically 40 hours, is run to ensure intimate contact between the mating parts. NOTE 3—Remove all solvents from the washer before testing.

It is the product of a restraining force and the radius at which it acts to balance the frictional torque. Astj standard is subject to revision at any time by the responsible technical committee and must be reviewed every?