Problems with copper and brass alloys
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The small-bore bushing of our reciprocating compressors is made of copper, with a layer of babbitt coating on the outside. Now that the babbitt has worn out, we want to remove that coating. Is there any way to remove the babbitt completely without damaging the copper substrate? ? ?
You can try using a welder’s torch to heat it, as bismuth alloys have a very low melting point. Generally, the solidus temperature of cast tin-based bismuth alloy ZSnSb11Cu6 is 240°C, while its liquidus temperature is 370°C. The material used for the copper components in small-bore bushings is usually phosphor bronze, whose melting point is above 1000°C; therefore, it’s possible to melt the bismuth alloy without damaging the copper components. Remember that although copper components can withstand high temperatures, do not overheat them. Otherwise, problems will arise with the copper tiles.
If the copper sleeve is locally overheated, it may not be able to be reset, affecting concentricity
You can try using a welder’s torch to heat it, as bismuth alloys have a very low melting point. Generally, the solidus temperature of cast tin-based bismuth alloy ZSnSb11Cu6 is 240°C, while its liquidus temperature is 370°C. The material used for the copper components in small-bore bushings is usually phosphor bronze, whose melting point is above 1000°C; therefore, it’s possible to melt the bismuth alloy without damaging the copper components. Remember that although copper components can withstand high temperatures, do not overheat them. Otherwise, problems will arise with the copper tiles.
Scrape it off directly, but this requires skill
I don’t think it’s necessary. The cost of buying a new one wouldn’t be much higher than the cost of dealing with it yourself
This post was last edited by Advantages are dumb on 2011-8-10 18:24. Why bake it locally? It is crucial to avoid localized overheating; heating should be even until all of the barium metal has melted.
Just take it to the place where the equipment parts are processed; isn’t it enough to simply use a CNC machine to cut them? Using heat will affect the stiffness of the copper sheets.
If you scrape it off and then apply babbitt alloy again, the cost will still be quite high
It’s so troublesome and risky; it’s better to buy a new one
The vehicle broke down; tiles were re-hung. Roasting over fire is troublesome and prone to causing problems later on. Anyway, you’re going to hang up anyway. It is best to hand it over directly to a professional manufacturer