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在机器制造过程中,总要用机械加工方法从金属铸件的毛坯上切下若干切屑。机器制造厂每年要加工数以万计的铸件或锻件,因此,被切下来的金属切屑的数量很可观,一般占铸件重量的20％左右,锻件还要多。目前我国机器制造业每年需要金属材料大约100万吨左右,也就是说,每年有20万吨的金属变成了切屑。此外由于对切屑利用不够重视,任它风吹雨打,生锈腐烂,造成了极大的浪费。苏联早在50多年前就开始了切屑重熔的工作。但是限于当时的技术水平,没有得到良好的效果。十几年来,苏联铸造工作者不断地在这方面进行试验研究工作,已经取得极大的成绩,积累了丰富的经验。我国工业建
During machining, it is always necessary to use machining to cut several chips from the blank of the metal casting. The machine factory processes tens of thousands of castings or forgings each year. Therefore, the amount of metal chips that are cut off is considerable, generally accounting for about 20% of the weight of the castings and more forgings. At present, China’s machine-building industry requires about 1 million tons of metal materials per year, that is, 200,000 tons of metal become chips each year. In addition, due to the lack of attention to the use of chips, let it wind and rain, rust and rot, resulting in a great waste. The Soviet Union started work on chip remelting more than 50 years ago. However, it was not confined to the technical level at that time and did not achieve good results. For more than a decade, Soviet foundry workers have continued to conduct experimental research in this area, and have achieved great results and accumulated rich experience. China’s industrial construction