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切削金属,可得到各种各样的切屑。其形式是否合理往往成为选择刀具几何参数以及切削用量的依据。为此,机械工程学会机加工学会切削学组提出了《金属切屑的分类方法》(以下简称为切屑标准)。为了提高机件的抗磨性能,选用含有铬、铜、钼、钒等合金元素的抗磨铸铁。这种材料的金相组织为断续网状渗碳体和细珠光体,它具有高硬度(HRC55～62)、高强度(抗弯强度为45～50kgf/mm~2)、抗磨、耐腐蚀等特点,但机械加工的难度大。为此,
Cutting metal, you can get a variety of chips. Whether the form is reasonable or not often becomes the basis for selecting the geometric parameters of the tool and the amount of cutting. To this end, the Institute of Machining Society of Machining cutting group put forward the “classification of metal chips” (hereinafter referred to as chip standards). In order to improve the anti-wear performance of the machine, the choice of wear-resistant cast iron containing chromium, copper, molybdenum, vanadium and other alloying elements. The microstructure of this material is intermittent reticular cementite and fine pearlite. It has high hardness (HRC55 ~ 62), high strength (bending strength of 45 ~ 50kgf / mm ~ 2), wear resistance, wear resistance Corrosion and other characteristics, but machining difficult. to this end,