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Stainless Steel Parts Cutting Tangential Stress, Plastic Deformation Nov 01, 2017

Stainless Steel Parts difficulties are mainly the following aspects:

1. Cutting force is large, cutting temperature is high

The type of material strength, cutting tangential stress, plastic deformation, and thus large cutting force. In addition, the thermal conductivity of the material is extremely poor,Stainless Steel Parts resulting in increased cutting temperature, and high temperature tends to focus on the cutting edge near the cutting edge, thus speeding up the tool wear.

2. Work hardening serious

Austenitic stainless steel and some high-temperature alloy stainless steel are austenitic structure, cutting hardening tend to work, usually several times the ordinary carbon steel, cutting tool in the hardened area cutting, the tool life shortened.

Easy to stick

Whether it is austenitic stainless steel or martensitic stainless steel are processed when the chip toughness, cutting temperature is very high characteristics. When the tough chips flow through the rake face, will produce bonding, welding and other stick knife phenomenon, affecting the surface roughness of processed parts.

4. Tool wear accelerated

The above materials generally contain high melting point elements, plasticity, high cutting temperature, so that tool wear to speed up, sharpening, frequent tool change, thus affecting the production efficiency and improve the use of tool costs.

Stainless steel is formed by its surface layer of thin and strong and stable and stable chromium oxide film (protective film), to prevent the continued infiltration of oxygen atoms,Stainless Steel Parts continue to oxidize, and get the ability to resist corrosion. Once for some reason, the film has been constantly destroyed, the air or liquid oxygen atoms will continue to infiltrate or metal iron atoms continue to precipitate out to form loose iron oxide, metal surface will continue to rust. This surface film is damaged in many forms, more common in daily life are the following:

1. The Stainless Steel Parts deposits with other metal elements of dust or heterogeneous metal particles attached to the wet air, the mixture of stainless steel and the condensed water, the two together into a micro-battery, triggering the electrochemical reaction ,Stainless Steel Parts The protective film is damaged, called electrochemical corrosion.

2. Stainless steel surface adhesion of organic juice (such as melons, soup, sputum, etc.), in the case of water and oxygen, constitute organic acids,Stainless Steel Parts long time the organic acid corrosion of metal surface.

3. Stainless steel surface adhesion contains acid, alkali, salt substances (such as decorative walls of alkaline water, lime water splash), causing local corrosion.

4. In contaminated air (such as containing a large amount of sulfide, carbon oxides, nitrogen oxide atmosphere), in case of condensate, the formation of sulfuric acid, nitric acid, acetic acid liquid point, causing chemical corrosion.