Material’s friction coefficient, wear rate and PV value determination is a complex process, not only related to material properties, but also related to wear surface relative motion, load size and characteristics and the surface quality and others factors. Dynamic test is a way to test product’s actual performance according to the material’s working conditions. It is different with normal room temperature test, which can observe product’s working condition reaction at high temperature, high-speed, high-pressure. Room temperature test is usually for material’s bending, compression, density and hardness and other properties test. Dynamic tests is not accurate than real machine test, but it is more economical and the test time is short compared to the real machine test shortened dozens of cycles, so dynamic test can not only save money, but also can provide faster required data.
Through dynamic test we can understand the immersion silver graphite and TZM alloy work condition, so the researchers carried out dynamic test on immersion silver graphite materials and grinding. It was found that, when the grinding appears grooves, burrs and other defects, it will destroy the graphite lubricating film formed on the working surface, resulting in friction and temperature increased, thus affecting material normal operation. Thus, grinding working surface roughness must meet the requirements of the drawing, and can not appear grooves, scratches, and other defects. In addition, before dynamic test, the sample should wear in under a certain pressure, so that there is lubricating film on the surface, which can reduce friction torque moment of starting and ensure the test can be carried out successfully.
In order to more economically and quickly understand the immersion silver graphite and TZM alloy working condition, so we can carry out dynamic test on immersion silver graphite material and grinding.
Email: sales@chinatungsten.com sales@xiamentungsten.com
Tel.: +86 592 5129696/86 592 5129595
Fax: +86 592 5129797
没有评论:
发表评论