During part processing, 45# steel blackening treatment has no effect on dimensional accuracy, because blackening is a common means of chemical surface treatment. The principle is to produce a layer of oxide film on the metal surface to isolate air and achieve the purpose of rust prevention. The size will not be deformed during surface treatment, so it will not affect the accuracy of parts.
In the process of machining, the parts with low appearance requirements need surface treatment process, and blackening treatment can be adopted. In the same industry of machining, 45# steel surface blackening is also called bluing. If the machining dimensions of precision mechanical parts have precision requirements, different surface treatment processes can be selected according to the purpose of part design. In the surface treatment process, 45# steel is treated with blackening, chromium plating, nickel plating and zinc plating. If the processing accuracy requirements on the production drawings are different, a reasonable surface treatment process is selected.
The above is to share 45# whether the blackening treatment of steel has an impact on the accuracy of parts. Thank you for your attention!
ken. tang@chengcg.com
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