تشغيلية

تقدير التشغيلية Machinability rating لمادة يحاول وضع قيمة رقمية s in machining properties of various materials. Expressed as a percentage or a normalized value. B-1112 steel (160 Brinell AISI B1112 free machining low carbon steel) is assigned a machinability rating of 100%. A material with a rating of 50% would be roughly twice as difficult to machine and a material with a rating of 200% would be roughly twice as easy to machine. It is apparently based on a subjective weighting of various other machining parameters and can be used as a rough guideline for selecting materials. More detailed information could be obtained by considering the speeds and feeds, surface feet per minute, material removal rate or production Rates, surface finish, machining power, and reject rates.

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 المصادر

Schneider, George Jr. Cutting Tool Applications (PDF). Schneider2002.