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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This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
It is the product of a restraining force and the radius at which it acts to balance the frictional torque. No further reproductions authorized.
Optional controlled pneumatic loading systems are available to replace applications of dead weight. It is generally s3702 that useful wear rate precision 1. An elapsed time indicator with reset feature to indicate motor running time should be included. Auditing Consulting Sourcing Training.
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. A built-in tachometer provides speed indication.
The mean rubbing velocity is related to spindle rotational speed: In cases where materials, products, or equipment are available only in inch-pound units, SI values in parentheses are for information only. Reagents and Materials 6. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
Originally approved in Last previous edition approved in as D—94 Inspection Validating the specifications, value and safety of your raw materials, products and assets.
Typical wear rates for some commonly used materials at different PV levels are: 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 and a bolt, and this assembly is inserted into the tester. Send us a request Wilton UK: Falex Friction and Wear test machine.
Refer to Table 1 to convert the speci? Current edition approved Oct. Preparation of Apparatus 7. The user of this test method should determine to his own satisfaction whether the results of this test procedure correlate with? Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Acetal homopolymer at PV1: If the test conditions are changed, the wear rates may change and the relative value of one material with respect to another may also change.
Wear in h round robins averaged 0. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of dd3702 of such rights, are entirely their own responsibility. Permission rights to photocopy the standard may also be secured from the ASTM website www.
Load is obtained by application of dead weights to the Each test consists of break-in for 40 h followed by a selected test duration, each at the same selected normal load and speed.
A number in parentheses indicates the year of last reapproval. It is recommended that clean cotton gloves or clean tweezers or tongs be used. This manufacturer recommends a maximum test load of lb kg. The test specimen is machined from a larger sample of the test material.
Precision and Bias NOTE 5—Calibrate torque meter such that the anticipated test torque is approximately two-thirds of calibration value. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
Each user should select a solvent that can meet applicable safety requirements and thoroughly clean machine parts. Your comments will receive careful consideration at a meeting of the responsible technical committee,1 which you may attend. Send us a request Need help or have a question? NOTE 3—Remove all solvents from the washer before testing. This test data would be used for the design of gears and bushings.
NOTE 6—A chart recorder can be used to continuously record torque throughout the test. Wear rate can be calculated as either in.
Your comments are invited either for revision of this standard or for asfm standards and should be addressed to ASTM International Headquarters. Weights are added to provide the desired contact pressure, and the rotational velocity is set. 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.
NOTE 2—Petroleum distillates, formerly used as solvents, have been eliminated due to possible toxic effects.
Global Reach Intertek is the industry leader with over 42, people in 1, locations in over countries. Certification Formally confirming that your products and services meet all trusted external and internal standards. A break-in period, typically 40 hours, is run to ensure intimate contact between the mating parts. The contact can be a test material against steel or against itself.