When the steel parts of the rough car, what type is the tool of the tool?
High speed steel High speed steel is also known as feng steel, which is a high alloy tool steel with tungsten, chromium, vanadium and molybdenum as the main alloy elements. High speed steel after quenching hardness as HRC63 ~ 67, the red hard temperature 550 ℃ ~ 600 ℃, allow the cutting speed of 25 ~ 30 m/min. High speed steel with high bending strength and impact toughness, to casting, forging, welding, heat treatment and machining, has the good grinding performance, the grinding quality is higher, so the more used to make complex shape of cutting tool, such as drill, reamer, milling cutter, etc., are also commonly used for low speed finish machining tool and forming tool. The commonly used high-speed steel plates are W18Cr4V and W6Mo5Cr4V2.
Cold hard. It has a high hardness in normal temperature, which is the wearability of the tool. 2) red hardness. The hardness required for cutting at high temperature is called "red hot hardness". 3) toughness. The cutting part of the lathe is subjected to the strength and hardness of vibration and shock load. Above three properties of tool material is mutual connection and restriction of, choose in concrete, should according to the requirements of the workpiece material and cutting performance analysis, as well as combination of tool materials, process performance aspects into consideration, the price at a lower cost in order to facilitate processing, grinding and welding manufacturing tool.
Rear Angle: the rougher Angle is smaller (6-8 degrees) and the fine car is larger (10-12 degrees). Tip Angle: when a rough car is usually 5 degrees, it will be 10 or larger when it is large. In fine cars, the average is -4 degrees. Main Angle: according to machine tool - workpiece - tool system stiffness choice. Side Angle: according to surface roughness choice, high time Angle is smaller. Radius of the tip of the blade: generally hard alloy tool, r = 0.5-2mm, and small when rough. You can do the same with the above data sharpener. (grinding knife still depends on experience)
The number W15 is significantly better than the T series. Suitable for the rough machining of carbon steel.
45 o, generally white steel knife, YT14, really play, find a piece of CR12 carbon steel quenching material sharpening can car, and skinning oxidation CR12 grinding sword that call a fast
