温拔对GCr15钢球化退火的影响

EFFECTION OF HOT DRAWING ON SPHEROIDIZING OF GCr15 STEEL

通过对ＧＣｒ１５钢在５００～７００℃范围内进行温拔试验和温拔后的球化退火试验，研究了温拔对球化退火的影响。结果表明：在温拔过程中ＧＣｒ１５钢具有良好的塑性和较低的变形抗力。温拔加工显著促进了拔制后碳化物的球化过程，退火时间仅为常规球化退火时间的１／２。

Through the test of hot drawing within 500-700 ℃ and then spheroidizing with GCr15 steel, the effection of hot drawing on spheroidizing is researched. It is showed from the result that in hot drawing GCr15 steel has a good plasticity and a relative low deformation strength; the spheroidizing of carbide after hot drawing is obviously improved and the annealing time is only one half of the normal period.