Current stainless steel precision parts machining, without changing the physical characteristics of the workpiece material, to obtain the limit of shape accuracy, dimensional accuracy, surface roughness, surface integrity (no or less surface damage, including micro-cracking, residual stress, tissue changes), mainly including running wear, hard wear, surface fatigue wear, thermal wear, change wear and corrosion wear.
Running wear is the wear of machinery under normal load, rate and wetting environment, this type of wear generally develops slowly and has little impact on processing quality in the short term.
Surface fatigue wear is machinery under the action of alternating loads to form fine cracks or class point dents, thus causing damage to the parts. This kind of wear is generally closely related to the pressure size, load characteristics, part material, specifications and other factors.
Heat-like wear is the heat generated by the parts in the process of friction on the parts, so that the parts have quenched and softened, scorched and wrinkled phenomenon. This kind of wear usually occurs in the high speed and high pressure sliding friction, its destructive nature, and accompanied by the nature of accidental wear.
Leaching wear is a chemical utility, i.e. chemical corrosion leading to wear. When the parts surface and acid, alkali, acid salt liquid or harmful substances in contact, chemical corrosion will occur, or non-standard precision parts processing parts surface and oxygen combined with the formation of hard and brittle hydroxide, and then parts wear.
Hardware precision parts processing change wear is the parts in high temperature long-term work, the parts surface metal tissue crystal heat increase, crystal boundary oxidation, the formation of small gaps, reduce the sensitivity of the parts and wear resistance, resulting in parts wear.
Hard particle wear is due to the parts themselves fall or from the outside into the machine tool hard particles, mixed to the processing area, suffer mechanical cutting or grinding, damage to the parts, the processing quality has a serious impact.
