数控工艺员理论知识（Theoretical knowledge of numerical control technology）.docVIP

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数控工艺员理论知识（Theoretical knowledge of numerical control technology）.doc

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数控工艺员理论知识（Theoretical knowledge of numerical control technology）

数控工艺员理论知识（Theoretical knowledge of numerical control technology） 2-1 tool material should have the performance 1. Hardness and wear resistance HRC60 above Intensity and resilience Iii. Heat resistance Carbon tool steel red hard about 3000C, high speed steel about 6000C, hard alloy 8000C, 4. Good technology Such as forging, welding, heat treatment, grinding 2-2 high speed steel 1. Ordinary high speed steel Tungsten is a common high speed steel W6Mo5Cr4V2 of tungsten and molybdenum High performance high speed steel 1. High carbon high-speed steel 0.9% ~ 1.05% 2. High-vanadium high speed steel 3. Cobalt high speed steel M42 4. Aluminum high speed steel 3. Powder metallurgy high speed steel 4. Surface treatment of high speed steel 2-3. Hard alloy 1. Type and selection of cemented carbide Tungsten cobalt carbide (YG) YG carbide is not suitable for processing steel materials, because with YG carbide cutting tools cutting temperature is about 6400 c, will be bonded with steel, make the tool produces adhesive wear and tool life YG8: cutter YG6X: special hard cast iron, austenitic stainless steel, heat-resistant alloy, titanium alloy, hard bronze, hard wear resistant insulating material YG10H: high strength steel and heat resistant alloy Tungsten and titanium carbide (YT) : WC + TIC + CO YT5-5TiC %, CO10 %, WC85 %. 900-10000c, suitable for machining steel. But not suitable for processing titanium stainless steel, 3. Tungsten tantalum (niobium) cobalt carbide (YA) WC + TaC + NbC + CO is suitable for semi-finishing processing of cold-hard cast iron, non-ferrous metal and its alloys. It can also be used for semi-finishing and finishing processing of high manganese steel and hardened steel 4. Tungsten titanium tantalum (niobium) cobalt hard alloy (YW) WC + TIC + TaC + NbC + CO applies to steel, cast iron, non-ferrous metal for rough, finish, good versatility Titanium carbide (YN) TiC + Ni + Mo - heat resistant 1100 ~ 13000C, the cutting speed 300 ~ 350m/min apply to steel, cast