钻头模具一次成型新材料的研究

Study on New Material for Once-through Bit Mould

摘要:

介绍钻头模具的新型材料──成型砂的特点、选择、配制、成型工艺、产品的制造及测试等．

Abstract:

Features,selection,moulding process,product manufacture and test of moulding sand-a newmaterial for bit mould is described