In addition to end mills, some end mills and cemented carbide as milling cutter materials for milling stainless steel, other types of milling cutters are generally made of high-speed steel, especially tungsten, molybdenum and high-vanadium high-speed steel, which have good results. The durability is 1-2 times higher than that of W18Cr4V. Carbide grades suitable for making stainless steel milling cutters are: YG8, YW2, 813, 798, YS2T, YS30, etc.
The adhesion and fusion of stainless steel are strong, and the chips are easy to adhere to the cutting edge of the milling cutter, which deteriorates the cutting conditions; during up milling, the cutting edge first slides on the hardened surface, which increases the tendency of work hardening; milling When the impact and vibration are large, the cutting edge of the milling cutter is easy to chip and wear.
The corrugated edge end mill is used to process stainless steel pipes or thin-walled parts. High-speed milling with carbide end mills and indexable end mills in stainless steel can achieve good results.
When milling stainless steel, the down milling method should be used as much as possible. The asymmetric climb milling method can ensure that the cutting edge is smoothly cut away from the metal, the chip bonding contact area is small, and it is easy to be thrown off under the action of high-speed centrifugal force, so as to avoid the chip impacting the rake face when the cutter teeth re-cut into the workpiece. Peeling and chipping phenomenon, improve the durability of the tool.
