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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Through our network of over 43, people in 1, laboratories and offices in countries, Intertek provides quality and safety solutions to a wide range of industries around the world. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Originally approved in Contact pressure, rotational velocity RPMand the number of cycles hours must be specified for each test.
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Test materials are machined into a disk approximately 1. Testing Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards. Preparation of Apparatus 7. Subscripts 2a, 2b, 2c, and 2d are the corresponding? Each test consists asm break-in for 40 h followed by a selected test duration, each at the same selected normal load and speed. Due to copyright restrictions, we are s3702 able to provide copies of standards.
Last previous edition approved in as D—94 Send us a request Need help or have a question? The lever arm may be balanced to compensate for the weight of the stationary washer.
Coefficient of Friction ASTM D
Assurance Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Summary of Test Method 3. Weights are added to provide the desired contact pressure, and the rotational velocity is set. Standards can be obtained from appropriate standards authorities.
The contact can be a test material against steel or against itself.
This test data would be used for the design of gears and bushings. AA, the hardness Rc 20 6 5.
In cases where materials, products, or equipment are available only in inch-pound units, SI values in parentheses are for information only. It is generally believed that useful wear rate precision 1.
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It is recommended that clean cotton gloves or clean tweezers or tongs be used. Acetal homopolymer at PV2: Test durations will often be in the 50 to h range. Mark the test specimen inside the raised test surface so subsequent astk can be made at the same places. The test specification refers to self-lubricating materials – external lubrication is not part of the specification. Refer to Table 1 to convert the speci?
Validating the specifications, value and safety of your raw materials, products and assets. Global Reach Intertek is the industry leader with over 42, people in 1, locations in over countries. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? NOTE 2—Petroleum distillates, formerly used as solvents, have been eliminated due to possible toxic effects.
The contact area is 1. It is the product of a restraining force and the radius at which it acts to balance the frictional torque. Reagents and Materials 6.
Coefficient of Friction ASTM D3702
Inspection Validating the specifications, value and safety of your raw materials, products and assets. Precision and Bias Falex Friction and Wear test machine.
Certification Formally confirming atsm your products and services meet all trusted external and internal standards. Each user should select a solvent that can meet applicable safety requirements and thoroughly clean machine parts.
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Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards.