| Analysis Of The Difficult Cutting Of Stainless Steel 304
Stainless steel thermal conductivity is not good, and the chips are easy to form chips on the tip of the tool when heated, let's share the difficult cutting problem of stainless steel.
DALIAN, China - Oct. 18, 2022 - PRLog -- - The most important point is that the inclination of the cutting edge of the tool must be 0 °, and it can be ground on the tool grinder if conditions permit. Because when the stainless steel is cut off, the chip rubs against the groove wall seriously. If the chip cannot be rolled out vertically, the chip extrusion will occur, and the knife will be cut in severe cases. When the inclination angle of the blade is large, even if chip separation measures are adopted, the effect is not ideal.
- The arc radius of the tool tip should not be too large. If it is too large, the back corner of the tool is easy to be worn. It may be because the chip thickness at the arc is thinner, which is easy to cause work hardening and aggravate the wear of the tool side.
- The tool wear shall be grinded in time. The grinding standard of stainless steel cutting tool shall not only be determined according to the main rear, but also pay special attention to the wear degree of the auxiliary rear. If the wear of the auxiliary rear is too large, the friction between the tool and the groove side increases, resulting in the narrowing of the groove width, making it difficult to discharge the chips, and the tool wear is accelerated.
- The front surface roughness of the tool should be reduced as much as possible. The low surface roughness value can reduce the adhesive wear, reduce the cutting force, and make the cutting light and fast. Practice has proved that the service life of the tool after grinding in front of the tool is significantly improved than that of the tool without grinding.
- The negative chamfer of about 0.2mm is grinded on the cutting edge, which can reduce the blade breakage during grinding and obtain better cutting edge quality. The lower part of the knife body is fish belly shaped to increase rigidity. The relief angle of the tool pair is grinded by the outer circle of the grinding wheel, with good rigidity. The actual relief angle is about 2 ° ~ 3 °.
- Whole post at https://www.sansmachining.com/analysis-of-the-difficult-c...
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