SCIENCE AND TECHNOLOGY ENGLIAH FOR MECHANICAL ENGINEERING There are various manufacturing processes casting铸造 used for converting raw materials into finishedforging f#xit parts. These processes include casting, forging, welding Htk welding, punching, forming, machining, heat- punching it. treatment, plating, coating, and so on. Among forming成形加工 them, the machining process plays an machining切削加工 important role in the manufacture of parts heat- treatment热处理 The machining process of a part may plating电镀 include various machining operations, such as coating i a turning, milling, drilling, grinding, broaching operation操作,工序 gear-cutting, etc. depending on the required turning车削 shape, dimensions, accuracy and surface milling铣肖 quality of the part. In order to ensure the drilling fijl quality of a completed part. well-planned grinding磨削 processes documents are necessary broaching拉削 etc.= et ceteraSCIENCE AND TECHNOLOGY ENGLISH FOR MECHANICAL ENGINEERING There are various manufacturing processes used for converting raw materials into finished parts. These processes include casting, forging, welding, punching, forming, machining, heat￾treatment, plating, coating, and so on. Among them, the machining process plays an important role in the manufacture of parts. The machining process of a part may include various machining operations, such as turning, milling, drilling, grinding, broaching, gear-cutting, etc. depending on the required shape, dimensions, accuracy and surface quality of the part. In order to ensure the quality of a completed part, well-planned processes documents are necessary. casting 铸造 forging 锻造 welding 焊接 punching 冲压 forming 成形加工 heat-treatment热处理 machining 切削加工 plating 电镀 coating 油漆 operation 操作,工序 turning 车削 milling 铣削 drilling 钻削 grinding 磨削 broaching 拉削 etc.= et cetera