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目前机械制造中广泛地采用耐热钢来制造高温工作的零件、部件和工具等。在轧钢车间里,耐热钢锭在轧制之前,必须先经过机械加工,也就是把钢锭坯荒车到直径300毫米、长1000～1500毫米。从前所用的外圆车刀,刀头上是焊P18高速钢刀片:车刀的几何角度如下:前角γ=15°;主后角α=副后角α_1=10°;主偏角=45°;副偏角=10α:主刀斜角λ=0°;刀尖圆弧半径r=2毫米。采用的切削速度为3～s米/分。用10％乳化液与15％煤油的水溶液调成润滑冷却液,加以急速冷却。如果冷却液一旦停止
At present, the use of heat-resistant steel is widely used in machinery manufacturing to manufacture parts, components and tools for high-temperature operation. In the rolling plant, heat-resistant ingot before rolling, you must first undergo mechanical processing, that is, the ingot blank waste car to diameter 300 mm, length 1000 ~ 1500 mm. Formerly used turning tool, the tip is welded P18 high-speed steel blade: turning the geometric angle is as follows: rake angle γ = 15 °; the main post-angle α = deputy post angle α_1 = 10 °; °; Vice declination = 10α: skew angle of main blade λ = 0 °; radius of nose radius r = 2mm. The cutting speed of 3 ~ s m / min. With 10% emulsion and 15% kerosene aqueous solution into a lubricating coolant, to be rapidly cooled. If the coolant stops once