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  • 什么叫铝合金铸造工艺
  • 本站编辑:杭州达跃机械有限公司发布日期:2021-04-06 09:58 浏览次数:
什么叫铝合金铸造工艺
铝合金具有密度低、强度高、韧性好和耐腐蚀等优点,在航空航天工业中被广泛用作结构材料,同时,也正在积极开发作为汽车先进材料而应用于高档轿车发动机。
  铸造工艺是传统铝合金主要制备方法,但已难以满足制备高性能铝合金的需要。第一,传统工艺已经难以进一步提高强度、塑性、刚度、耐热性和耐腐蚀性;第二,在追求高性能的过程中,铸造工艺成本由于增添设备和成品率下降而迅速上升;第三,由于合金含量上升,塑性往往降低,因而后续压力加工成本上升、成品率降低。
  因此,生产的高成本大大提高了先进铝合金的使用门槛,严重影响整体市场规模的发展。在这些方面,喷射成形工艺正好具有性能和综合成本的双重优势,可使先进铝合金的使用门槛降低,还可以进一步提高性能,在一定范围内实现以铝代钢,从而迅速培育先进铝合金的市场,并反过来促进喷射成形工艺获得规模成本优势。因此,喷射成形工艺将成为较先进铝合金的主要生产工艺。

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What is the casting technology of aluminum alloy
Aluminum alloy has the advantages of low density, high strength, good toughness and corrosion resistance. It is widely used in aerospace industry as structural materials, and is also actively developing as advanced materials for automobiless and used in high-grade car engines.
Casting technology is the main method of traditional aluminum alloy preparation, but it is difficult to meet the needs of high performance aluminum alloy. First, it is difficult for traditional technology to further improve strength, plasticity, rigidity, heat resistance and corrosion resistance; second, in the process of pursuing high performance, the casting process cost increases rapidly due to the increase of equipment and finished product rate; thirdly, due to the increase of alloy content, plasticity tends to decrease, so the subsequent pressure processing cost increases and the yield of finished products decreases.
Therefore, the high cost of production greatly improves the threshold of advanced aluminum alloy and seriously affects the development of the overall market scale. In these aspects, spray forming technology has the double advantages of performance and comprehensive cost, which can reduce the threshold of use of advanced aluminum alloy, further improve the performance, realize the replacement of steel with aluminum in a certain range, so as to cultivate the market of advanced aluminum alloy quickly, and to promote the jet forming process to obtain the scale cost advantage. Therefore, spray forming technology will become the main production process of advanced aluminum alloy.