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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The lever arm may be balanced to compensate for the weight of the stationary washer. Certification Formally confirming that your products and services meet all trusted external and internal standards.

The specimen is fixed into the sample holder using a pin and a bolt, and this dd3702 is inserted into the tester.

Typical spindle speed range is 10 to rpm. Acetal homopolymer at PV1: The contact can be d37702 test material against steel or against itself. Current edition approved Oct. This test method evaluates the performance of materials in rubbing contact under end use type conditions. Falex Friction and Wear test machine. The test specimen is machined from a larger sample of the test material.

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

Load is obtained by application of dead weights to the NOTE 4—Check compatibility of the test specimen cleaning procedure and reagents with the speci? 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.

Torque the bolt to 6.

Refer to Table 1 to convert the speci? Auditing Consulting Sourcing Training. Send us a request Wilton UK: Test durations were h, except for round robin 1 where they ranged from to h. Standards can be obtained from appropriate standards authorities.

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Global Reach Intertek is the industry leader with over 42, people in 1, locations in over countries. Assurance Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Last previous edition approved in as D—94 The mean rubbing velocity is related to spindle rotational speed: Inspection Validating the specifications, value and safety of your raw materials, products and assets.

NOTE 3—Remove all solvents from the washer before testing. Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards. The contact area is 1.

Coefficient of Friction ASTM D3702

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Preparation of Apparatus 7. Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Formally confirming that your products and services meet all trusted external and internal standards.

Subscripts 2a, 2b, 2c, and 2d are the corresponding? This manufacturer recommends a maximum qstm load of lb kg. Originally approved in Due to copyright restrictions, we are not able to provide copies of standards. This test data would be used for the design of gears and bushings. NOTE 5—Calibrate torque meter such that the anticipated test torque is approximately two-thirds of calibration value.

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Permission rights to photocopy the standard may also be secured from the ASTM website www. The test specification refers to self-lubricating materials – external lubrication is not part of the specification.

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Coefficient of Friction ASTM D

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. Precision and Bias Each test consists of break-in for 40 h followed by a selected test duration, each at the same selected normal load and speed. No further reproductions authorized. 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 e3702 use.

AA, the hardness Rc 20 6 5. 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.

Optional controlled pneumatic loading systems are available to replace applications of dead weight. PV limit pressure x velocity is the point at which the material fails catastrophically. NOTE 2—Petroleum distillates, formerly used as solvents, have been eliminated due to possible toxic d302.

Mark the test specimen inside the raised test surface so subsequent measurements can be made at the same places. Your comments will receive careful consideration at a meeting of the responsible technical committee,1 which you may attend.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? A number in parentheses indicates the year of last reapproval.

Test materials are machined into a disk approximately 1. Assurance Testing Inspection Certification.

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