December 3rd, 2016

glock

Нержавеющие стали,повышенной обрабатываемости резанием.

Stainless steels are known for their corrosion-resistant qualities given by a complex oxide protective film on the alloy surface. Chromium and nickel are the most important elements which form passive film. On the other hand, most grades of stainless steels are more or less difficult to machine in end-use conditions and are substantially different from that of carbon or alloy steels and other alloys. One procedure for improving machinability of stainless steels is the result of changes in composition by adding sulfur, selenium, lead, copper, etc. Alloying elements serve to reduce the friction forces, transverse ductility and the tendency of the chips to weld to the tool, but they affect functional (corrosion resistance, transverese ductility) and technological properties (machinability, weldability) in a free-machining stainless steel.
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