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.
精密冷滚轧是金属塑性成形与轧制成形相结合的一种无切削加工工艺。
Precision CRF (Cold roll forming) is a kind of non-cutting technology, which integrates the metal plastic forming and rolling forming.
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.
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