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You are here : Mechanical seal face wear testing techniques
Mechanical seal type test test is often used before and after the length of the seal ring to measure the difference between the face amount of wear, may also seal ring test the difference between weight before and after conversion from wear. Length of the measuring instrument is generally used in micrometers, optical length measurement device can be applied. If the wear is small, you can use surface profiler (Taylor Instrument) to measure friction face of the wear ring width. For the narrow end faces, due to wear no longer the benchmark after the original, but you can use the "comparative method"to measure (with an optical length gauge on the block gauge and narrow ring test to compare the height of front and rear), or use the "scratch Method "to measure, that is, without compromising performance, in the end face along the narrow ring engraved with 2 weeks to 4 shallow scratches, usually 5 ~ 10¦Ìm, with Taylor before and after the scratch test measured the depth of Can measure trace wear.
As a result of demolition of seal friction method of measuring the amount of cumulative wear and tear, will destroy the friction and friction with the state, the variable amount of wear test conditions have a greater error. Therefore, not even the demolition of continuous dynamic friction wear testing of mechanical seals will be the ideal way to wear and tear process. Hao points, and so the mechanical seal face wear test wear test method by means of resistance, friction, without dismantling the test case of the carbon graphite ring in different conditions of wear variation. The test principle is embedded under the seal ring friction face some resistance, and to strip insulation thin film resistance, friction work, the resistance of films with the wear and friction face, the wear resistance of chip cross-sectional area decreases, causing resistance Increased. Change the value of resistance can be measured calculate the amount of seal face wear.
As a result of demolition of seal friction method of measuring the amount of cumulative wear and tear, will destroy the friction and friction with the state, the variable amount of wear test conditions have a greater error. Therefore, not even the demolition of continuous dynamic friction wear testing of mechanical seals will be the ideal way to wear and tear process. Hao points, and so the mechanical seal face wear test wear test method by means of resistance, friction, without dismantling the test case of the carbon graphite ring in different conditions of wear variation. The test principle is embedded under the seal ring friction face some resistance, and to strip insulation thin film resistance, friction work, the resistance of films with the wear and friction face, the wear resistance of chip cross-sectional area decreases, causing resistance Increased. Change the value of resistance can be measured calculate the amount of seal face wear.
