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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Coefficient of Friction ASTM D

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

Test materials are machined into astn disk approximately 1. NOTE 1—This machine may also be used to measure coefficient of friction. Formally confirming that your products and services meet all trusted external and internal standards.

Falex Friction and Wear test machine. Your comments will receive careful consideration at a meeting of the c3702 technical committee, which you may attend. Typical wear rates for some commonly used materials at different PV levels are: Assurance Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Test durations will often be in the 50 to h range.

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Permission rights to photocopy the standard may also be secured from the ASTM website www. Validating the specifications, value and safety of your 3d702 materials, products and assets. NOTE 4—Check compatibility of the test specimen cleaning procedure and reagents with the speci?

Testing Evaluating how your products and services meet and exceed quality, safety, sustainability and performance asgm. 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 d33702 around the world.

It is recommended that clean cotton gloves or clean tweezers or tongs be used. The contact area is 1. NOTE 3—Remove all solvents from the washer before testing.

Mark the test specimen inside the raised test surface so subsequent measurements can be made at the same places. The test sample is then weighed and measured, zstm the test begins. The contact can be a test material against steel or against itself.

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NOTE 5—Calibrate torque meter such that the anticipated test torque is approximately two-thirds of calibration value. Certification Formally confirming that your products and services meet all trusted external and internal standards.

Acetal homopolymer at PV2: Last previous edition approved in as D—94 This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Optional controlled pneumatic loading systems are available to replace applications of dead weight. Current edition approved Oct.

Coefficient of Friction ASTM D3702

The mean rubbing velocity is related to spindle rotational speed: AA, the hardness Rc 20 6 5. A number in parentheses indicates the year of last reapproval. Acetal homopolymer at PV1: Each test consists of break-in for 40 h followed by a selected test duration, each at the same selected normal load and speed.

Precision and Bias NOTE 2—Petroleum distillates, formerly used as solvents, have been eliminated due to possible toxic effects.