Does the blackening of 45 # steel affect the accuracy of parts ?

AIXI Hardware, specializing in precision machine parts processing, precision CNC machining quality suppliers. Contact with mechanical processing for many years, often have the customer to ask the same question, after the surface of the equipment 45# steel, does it affect the dimensional accuracy of the part? When the customer mentions the part processing technology problem, we will explain to the customer in detail. 45# steel blackening has no effect on dimensional accuracy, because blackening is a common method of chemical surface treatment. The principle is to produce an oxide film on the metal surface to isolate the air and achieve the purpose of rust prevention. The surface is not deformed during surface treatment, so it does not affect the accuracy of the part.

In the machining process, parts with low general appearance requirements need to be surface treated, and blackening treatment can be used. In the same industry as machining, the surface of 45# steel parts is blackened, and it is also called blue. For precision machining parts, if there are precision requirements, different surface treatment processes can be selected according to the purpose of the part design. In the surface treatment process, 45# steel has blackening, chrome plating, nickel plating, galvanizing treatment, etc., and the processing precision requirements on the production drawings are different, then a reasonable surface treatment process is selected.