工艺采用冷锻、热打、切削，GY为本厂产品的注册商标。
We use cold-forming, hot-striking and cutting to produce the products. The products registering trade mark is GY.
经渗碳及淬火后，具有表面硬度高、心部韧性好的特点、冷变形塑性中等，切削加工性好。
Carburizing and quenching, with high surface hardness, good toughness characteristics, the heart of cold plastic deformation of medium, cutting is good.
文中指出了采用冷挤镦工艺代替切削加工生产铜管接头的优点。
In this paper, the advantages of the manufacturing on the cutting copper tube joint with the cold extrusion heading technology are pointed out.
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