Processing of stainless steel workpiece generally require a hole body is smooth, less burr, generally choose a high-quality white full grinding process of the drill, most of the market is the black rolling process, the main difference between the full grinding and rolling process is the grinding of the drill flower and the drill chuck supporting the use of the overall amplitude of the small, so that the hole body has less burr, precision is also high, the efficiency of the batch processing is especially obvious.
Stainless steel itself is not high hardness, but difficult to process the reason:
Because stainless steel containing C element is low, the hardness is not high, and not easy to deform, plasticity is poor, this is the organization of the steel grain is dense lead to become. This makes the drill in the drilling increased viscosity, not easy to chip, at this time the drill is easy to burn out. Through the practice of comparison, the opening of the 135-degree drill bit in the control of speed at 300-500 rpm than the same material on the market opening 118-degree drilling are much easier.
Stainless steel is short for stainless and acid-resistant steel, resistant to air, steam, water and other weak corrosive media or have stainless steel is called stainless steel; and will be resistant to chemical corrosive media (acids, alkalis, salts, and other chemical impregnation) corrosion of the steel is called acid-resistant steel. Because of the differences in their chemical composition and their corrosion resistance is different, ordinary stainless steel is generally not resistant to chemical media corrosion, and acid-resistant steel are generally stainless.