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这是神户制钢公司为高效率加工不锈钢而开发的新产品。主要特点:①立铣刀基体材料为硬质合金,经过特殊涂层处理(该公司对外统称为miracle涂层),涂层硬度达HV2500～2800(TiN涂层为HV1800～2000),导热性为TiN涂层的4～5倍,抗氧化性也大幅度提高,升温至800℃时才开始氧化,而TiN涂层在600℃时即开始氧化。②螺旋角为50°,切削刃锋利度高,切削轻快,排屑流畅。③抗弯强度为4000N/mm~2,接近高速钢的水平,适宜用于SUS304等较软的不锈钢加工。如在V=30m/min,f=0.04mm/齿,a_p=5mm条件下切削SUS304时,刀具寿命为TiN涂层硬质合金立铣刀的3倍。
This is a new product developed by Kobe Steel for the efficient processing of stainless steel. Main features: ① End mill base material is cemented carbide, after special coating treatment (the company collectively referred to as miracle coating), coating hardness HV2500 ~ 2800 (TiN coating HV1800 ~ 2000), thermal conductivity TiN coating 4 to 5 times, oxidation resistance is also greatly improved, the temperature was raised to 800 ℃ oxidation started, and the TiN coating at 600 ℃ when the oxidation began. ② helix angle of 50 °, cutting edge sharpness, cutting light, chip evacuation. ③ flexural strength 4000N / mm ~ 2, close to the level of high-speed steel, suitable for SUS304 and other soft stainless steel processing. Cutting SUS304 at V = 30 m / min, f = 0.04 mm / tooth, a_p = 5 mm, the tool life is 3 times longer than TiN coated carbide end mills.