Stainless steel parts processing tool use

25/mag/2018 02:44:05 stainless steel Contatta l'autore

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The requirement for the surface roughness of the cutting portion of the tool during the machining of  316 Stainless Steel Bar parts to improve the surface finish of the cutting portion of the tool can reduce the resistance when the chips form a curl and improve the durability of the tool. Compared with processing ordinary carbon steel, when machining stainless steel, the cutting amount should be appropriately reduced to reduce tool wear; at the same time, appropriate cooling lubricant should be selected so as to reduce the cutting heat and cutting force in the cutting process and prolong the service life of the tool.

The requirements on the geometric parameters of the tool during the machining of stainless steel should generally be considered from the aspects of the rake angle and the relief angle. When selecting the rake angle, factors such as the shape of the chip groove, the presence or absence of chamfering, and the angle of the positive and negative angles of the rake angle must be considered. Regardless of the type of tool, the larger rake angle must be used when machining stainless steel. The selection of the relief angle should not be too small, but it should not be too large. If the relief angle is too large, the wedge angle of the tool is reduced, which reduces the strength of the cutting edge and accelerates the wear of the tool. In general, the relief angle should be larger than when processing ordinary carbon steel.

In the machining of stainless steel parts with respect to the arbor material, the arbor must have sufficient strength and rigidity to avoid chattering and deformation during the cutting process. This requires the use of a suitably large cross-sectional area of the shank, and at the same time high strength materials should be used to make the shank, such as quenched and tempered 45 steel or 50 steel.

The requirement for the material of the cutting part of the stainless steel part during machining When machining stainless steel, the material of the cutting part of the cutting tool is required to have high wear resistance and can maintain its cutting performance at a higher temperature. Currently used materials are: high-speed steel and carbide.

Since high-speed steel can only maintain its cutting performance below 600 degrees Celsius, it is not suitable for high-speed cutting, but is only suitable for machining  304 Stainless Steel Bar at low speeds. Because cemented carbide has better heat resistance and wear resistance than high speed steel, tools made of hard alloy are more suitable for cutting stainless steel.

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