High PV value friction material?
High PV value friction material?
(OP)
We currently make a product using a sintered bronze clutch material in a cone clutch arrangement. The material is subjected to a maximum of 3800 fpm relative movement and a maximum pressure of 1500 psi. It runs against a 4140 flywheel machined to a 32 mi finish. Coefficient is around .19. The bronze material is holding up well in this application, however...
We are making a new product that needs to have a maximum relative speed of 8500 fpm and a max pressure of around 3000 psi. Test results are all preliminary so far, but I have some concerns that the large PV jump will be too much for this material to handle. Stability of the friction coefficient is important (needs to be held within +/- 20%).
My question is this... Does anyone have any input on a material that would be good for this application? We have tried most standard organic & semi-metallic materials previously and have found them lacking in frictional stability. I would prefer to use a wrought material (steel, bronze, aluminum, etc.) for their ease of manufacture and mechanical properties, but I am unsure how they would react after a number of cycles (I have some concerns about galling, etc.). If anyone has good ideas, let me know. Thanks. (I'm also posting this to the mechanical engineering forum).
- Rich
We are making a new product that needs to have a maximum relative speed of 8500 fpm and a max pressure of around 3000 psi. Test results are all preliminary so far, but I have some concerns that the large PV jump will be too much for this material to handle. Stability of the friction coefficient is important (needs to be held within +/- 20%).
My question is this... Does anyone have any input on a material that would be good for this application? We have tried most standard organic & semi-metallic materials previously and have found them lacking in frictional stability. I would prefer to use a wrought material (steel, bronze, aluminum, etc.) for their ease of manufacture and mechanical properties, but I am unsure how they would react after a number of cycles (I have some concerns about galling, etc.). If anyone has good ideas, let me know. Thanks. (I'm also posting this to the mechanical engineering forum).
- Rich
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RE: High PV value friction material?
RE: High PV value friction material?
We are the formemost authority on MMC friction and brake technology. We manufacture friction materials and MMC brake for over 15 years. We have the answers to your wear problem and also for your bronze materials. Please give us a call at 440-275-2755 to discuss your application in detail. Many people have problems in this area because the technology is so specialized.
Mike