We thermal deburr shafts before heat treating them. The thermal deburr process leaves the parts with some surface rust. For the most part this is not a problem since a majority of the shaft is hard machined. However, the rolled threads are not touched again leaving the finished part with rusty threads. Is this a common problem with thermal deburring? Is there problem with our process that we can avoid the rust?
Todd Brown Automotive - Batavia, Ohio, USA ^
I'm not an expert in this field; however, I am not sure that what you are seeing is exactly rust. Most residue from thermal deburring comes from the fuel used to create the heat/combustion and results in the form of carbon.
AF Kenton Hatboro, Pennsylvania ^
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