铜合金压铸模具材料的研究  

Study of Copper Alloy Die-Casting Mould Materials

作　　者：包中碧[1] 钟富平[1] 

机构地区：[1]重庆工业职业技术学院,重庆401120

出　　处：《铸造技术》2013年第11期1471-1473,共3页Foundry Technology

摘　　要：以工业生铁为主要原料,废钢、钼铁以及钒铁等为添加原料,采用20 kg中频感应加热炉熔炼,制备铜合金压铸模具材料。研究了压铸模具材料的屈服强度,冲击韧度及P元素微区成分分布对压铸模具材料性能的影响机理。结果表明:当添加0.6%的Zn元素时,所制备的铜合金压铸模具材料具有较好的屈服强度和冲击韧度,其值分别为415MPa和10.6 J·cm-2。添加适量的Zn元素可显著降低P元素在压铸模具材料晶界的偏析,提高压铸模具材料冲击韧度,从而提高压铸模具钢抗热冲击和抗热疲劳破坏的能力。Copper alloy die-casting mould materials were melted and fabricated by medium frequency induction furnace of 20 kg using pig iron as the main material, scrap iron, molybdenum iron, vanadium iron and etc. as additives. The influence mechanism of yield strength, impact toughness and micro distribution of P element on die-casting mould materials were studied. The results show that the die-casting mould materials show a better performance of yield strength and toughness with the content of 0.6 wt% Zn, which is 415 MPa and 10.6 J.cm-2, respectively. The appropriate addition of Zn element can obviously reduce the segregation of P element in the grain boundary of the die-casting mould materials, improve the impact toughness and increase the thermal shock and thermal fatigue damage resistance of the die-casting mould materials.

关 键 词：铜合金压铸模具 屈服强度 冲击韧度 P元素偏析 

分 类 号：TG23[金属学及工艺—铸造]