automatic hot forging造句

Manual transmission gears are an example of automatic hot forging used in conjunction with cold working.
Common forging processes include : roll forging, swaging, cogging, open-die forging, impression-die forging, press forging, automatic hot forging and upsetting.
Generally, the cold forming operation will do the finishing stage so that the advantages of cold-working can be obtained, while maintaining the high speed of automatic hot forging.
It's difficult to find automatic hot forging in a sentence. 用automatic hot forging造句挺难的