上海隆进特殊钢有限公司
五金通白金会员 第15年
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高碳合金钢【M42高速钢】硬质钢棒材
High speed steel heat treatment process is relatively complex, must after annealing, quenching, tempering and a series of process. The purpose of annealing is to eliminate stress, reduce hardness, uniform microstructure, convenient for quenching. The annealing temperature is 860 ~ 880 ℃. Because of its poor thermal conductivity when quenching generally divided into two phases. In 800 ~ 850 ℃ preheat, lest cause large thermal stress), and then quickly add heat to the quenching temperature 1190 ~ 1190 ℃ (different type when using the actual temperature difference), after the oil cooling or air cooling or cooling gas. Factory all use salt heating furnace, vacuum furnace is widely used now. After quenching due to internal organization retain part (about 30%) retained austenite into martensite, affect the performance of high speed steel. As the transformation of retained austenite, further improve the hardness and abrasion resistance.
高速钢钢带精炼过程中加入特殊的炼钢过程，迄今为止，减少夹杂物，钢的ESR不和的特点和疲劳寿命，特别是非常适合要强调的本公司长期供应进口高速钢板材及钢带，产品尺寸精准、表面光亮、切边光滑无毛刺、提供原产地材质检测证明。
上海隆进特殊钢 销售说明：代理商销售，模具钢、不锈钢、合金钢、高速钢、无磁钢、碳素钢、结构钢、硅钢、耐磨钢、耐热钢、耐腐蚀钢、硬质钢、铜合金、铝合金、钼合金、钛合金、铁合金、镍合金、
工艺：锻件，冷拉棒，锻打板，热轧板，冷轧板、铸造件、、、、、
规格：平板，卷材，光圆，毛圆，板块
