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SKH-51
  • Address:南京市
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SKH-51是国际通用的钨钼系韧性高速钢,该钢的碳化物颗粒细小均匀,具有韧性高,切削性能优良,热塑性好等特点具有良好的耐磨性能,尤其是可抵抗600℃高温不易软化,红硬性良好,热处理淬火后硬度可达到64HRC,耐磨性比高铬高碳钢高2倍,纫性强1.5倍,缺点是热处理工艺难度较大,使用成本高昂。




SKH-51硬度: 62~64 HRC






SKH-51锻制工艺及特性:


 


锻造:1.100~900℃ 


 


退火:


加热至800-850℃,在此温度中停留二~四小时,在炉中任其渐冷。 


 


淬火:


先预加热至550-600℃,次加热至950℃,再加热至a:1,220~1250℃b:1,200℃~1230℃。在油中淬硬,但油温必须先保湿40-60℃(a.一般工具;b.形式复杂式需要韧性之工具)


 


回火:


加热至550-570℃,在此温度中停留,然后在静止空气中冷却,回火必须重复二次 


 


氮化:比回火温度低40℃进行,具体宜模具设计确认。




消除应力:经超深冷处理后,再进行一次高温回火580℃,要3小时。






官网:www.yzmjgc.com




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