Cr2光板#高碳铬钢Cr2冷作模具钢Cr2耐磨钢
Cr2 cutting steel, the steel composition of GCr15 bearing steel and its hardenability, hardness and wear resistance are relatively high carbon tool steel, heat treatment when the size change is unlikely. Widely used as a measuring tool, such as sample, card board, the sample set, gauge, gauge block, ring gauge, thread plug gauge and sample column, etc., can also be used in the manufacture of wire drawing die and cold heading die, cold work die and cutting tool cutting at low speed is not too hard. High carbon chrome steel GCr15 Cr2 and rolling bearings have the same chemical composition and performance, cheap and in high carbon chromium steel belongs to the comprehensive performance of the best economical quenching oil quenching water of cold work die steel. Cr2 is equivalent to on the basis of the T10 steel to join the mass fraction of 1.5% chromium, has greatly improve the hardenability. The critical diameter of oil quenching is 15 ~ 25 mm or water is 30 ~ 50 mm. Die cavity deformation trend is the trend of the thin expansion; General mold parts oil quenching or alkali bath quenching is indented. Bath with nitrate bath or hot oil martempering, inner hole is bloated, but variables are small. Cr2 steel mold parts thickness < 25 mm when oil quenching; 38-80 - m
Cr2刃具用钢，此钢成分与GCr15轴承钢相当，其淬透性、硬度和耐磨性都较碳素工具钢高，热处理时尺寸变化也不大。广泛用作量具，如样板、卡板、样套、量规、块规、环规、螺纹塞规和样柱等，也可用于制造拉丝模和冷镦模等冷作模具，以及低速刀具切削不太硬的材料。
该钢淬火后的硬度、耐磨性都很高, 淬火变形不大, 但高温塑性差。该钢在淬火时, 薄形模具尺寸趋胀, 一般模具经油淬、碱浴淬火尺寸趋缩, 水冷淬火尺寸趋胀; 使用硝盐或热油分级淬火, 内孔趋胀。模具厚度<25mm时可进行油冷淬火, 当尺寸在38~80mm之间时可用机油、碱浴、食盐或碱的水溶液冷却淬火。而模具厚度>100mm及外径>25mm的冷镦模需用加压水喷淬。

产品名称：Cr2光板#高碳铬钢Cr2冷作模具钢Cr2耐磨钢
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