引言 对刀具只要求切削部分具有较高的耐热性,所以应该用较好的材料(例如高速钢)来制造,而连接部分则可由其它廉价的材料(例如结构钢)来代替。 经验证明,用接触对銲来进行高速钢、高合金钢与结构钢、工具钢的焊接乃是使结合强度最高的接柄方法之一。这种方法对於年产量较大的刃 INTRODUCTION The tool requires only a high thermal resistance of the cutting part, so it should be made of a better material such as high-speed steel and the connecting part replaced by other inexpensive material such as structural steel. Experience has shown that the use of contact butt welding for high-speed steel, high-alloy steel and structural steel, tool steel welding is to make the highest bonding strength of one of the methods. This method for the larger output of the blade