T10A钢冷压整形模的碳氮共渗工艺  

Carbonitriding process of T10A steel cold pressing sizing die

作　　者：立群[1] 

机构地区：[1]东华机械厂,山西大同037036

出　　处：《金属热处理》2008年第9期117-118,共2页Heat Treatment of Metals

摘　　要：用于薄壁锥形零件的冷压整形模原设计为组合模，内侧凹模为GCr15钢，外层为45钢。凹模经过（840±10）℃加热油冷和160～180℃回火处理，其平均使用寿命仅能加工700个零件；改进后采用T10钢制的整体式模。经过充分锻造，调质处理：850℃×60min，10％NaCl冷却到180～150℃空冷，（630±10）℃×150min回火后空冷，最终（800±10）℃×4h固体碳氮共渗，开箱后用高压水喷射冷却模腔，硬度高达66～67HRC，其平均使用寿命达到8500件。The cold pressing sizing die is used for thin wall tapered parts. Its origen design was a combined die, the inner is a concave die made of GCrl5 steel and the outer is 45 steel. The GCrl5 steel die was treated with （840 ± 10）℃ heating, oil quenching and 160 - 180 ℃ tempering, its mean service life was only sizing 700 parts. The improved design was a solid die made of T10 steel, after sufficient forging, the die was pre-treated with 850℃× 60 min heating, cooling in 10% NaC1 down to 180 - 150℃ then air cooling and （630± 10）℃× 150 min tempering,the final treating for the die was （800± 10） ℃×4 h pack carbonitriding,after open the packing box,the die was sprayed cooling by high presure water and its inner surface hardness can reach to 66 - 67 HRC, the mean service life of the die prolonged to 8500 parts.

关 键 词：整形模 固体碳氮共渗 

分 类 号：TG162.4[金属学及工艺—热处理]