Speculation is to cast from the mine into raw iron to re-processing, through forging and drawing processes, the production into a wide range of products.
炒是把从矿山浇铸成的生铁块重新加工，经过锻打、拉拔工序，生产成各式各样的产品。
The results of trial manufacturing and product detection indicate that employing a die forging-drawing process to form the monobloc break beam frame is feasible.
生产试制及产品检验表明，采用“模锻-拉制”工艺成形整体结构的新型制动梁架是可行的。
This paper introduces the developing progress of metallic pressure sealing ring, including selecting material, drawing special forging process, intenerating process and drawing machining process.
介绍了具有优良使用性能，可替代进口产品的金属自密封环的研制，包括选材、制定特殊锻造工艺、制定机械加工工艺规程和软化处理等。
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