Stainless steel milling characteristics

1. Severe work hardening

The work hardening of stainless steel is serious, the first choice is the mixture of austenite and ferrite is the most, the hardness of its hardening layer is 1.4~2.2 times higher than the original matrix hardness, strength R=1470~1960MPa.This kind of stainless steel has a large plasticity and a large strengthening coefficient.Moreover, austenite is unstable and easy to change into martensite under the action of cutting force.

HRC60 2 Flutes Carbide Ball Nose End Mill

2. High cutting force

Stainless steel has a high plasticity, especially austenitic stainless steel with a depth of 2.5 times that of 45# steel.In the process of milling, the plastic deformation is large, the cutting force is increased, the machining hardening is serious, the thermal strength is high, the cutting crimp and break is difficult.

3, high cutting temperature

The plastic deformation of stainless steel, friction intensification, its thermal conductivity is relatively low, so under the same conditions, the temperature of milling stainless steel no. 45 steel high 200 degrees or so.

4, cutting is not easy to break

When processing stainless steel, easy to bond and produce chip.Stainless steel plasticity and toughness are relatively large, its cutting is not easy to break when milling.Under high temperature and high pressure, tools are prone to bond wear and chip deposits.

5, tools easy to wear

Of course, the processing of stainless steel to use stainless steel milling cutter, because of the TiC hard point of stainless steel, easy to make the tool to produce severe hone wear.At high speed, high temperature and high pressure, cutting tools are prone to bond, diffusion and crescent depression wear.

What milling cutter is used for processing stainless steel?

Hard alloy material is used to process stainless steel, hard tungsten cobalt type fine grain or ultra-fine grain hard alloy containing TaC or NbC.Such as YG6x, YG813, YW4, YD15 and so on.

JIALING HRC55 T-sot Solid Carbide end mill

hen milling stainless steel, should choose extreme pressure emulsion or vulcanized cutting oil. For stainless steel mills made of hard alloy, the milling speed shall be 40~60m/min. In order to avoid cutting edge in the hardened layer and accelerate tool wear, the feed shall be greater than 0.1mm. Some enterprises will use high hard tools to process stainless steel, in fact, for 304, 202 and other ordinary stainless steel material, with carbide tools can. If the processing of 316 stainless steel, stainless steel after quenching and heat treatment, import and high hard stainless steel, in addition to the use of high hard cutting tools, the processing of stainless steel to a sharper cutting edge.