2007年4月11日 星期三

镁合金压力铸造的优点www.tool-tool.com

Bewise Inc. www.tool-tool.com

Reference source from the internet.
镁合金压力铸造的优点有:
高的生产率;
高精度;
好的表面质量;
精细的铸件晶粒;
可压铸薄壁和复杂结构的产品。
镁合金压铸和铝合金压铸相比:
生产率高50%;
可使用钢模,延长服务寿命;
更低的潜热,节省能量;
好的机加工性;
模具成本节省50%;
熔体具有更高的流动性。
镁合金压力铸造也有一些不利的方面,例如:
由于极高的液体填充速度和凝固速度,易产生卷入性气孔;
铸件不能太厚,壁厚只能局限于一定的尺寸;
便宜的压铸合金,有限的机械性能;
有限的可使用压铸合金种类;
由于铸件晶粒尺寸细小,抗蠕变能力较差;
抗蠕变的Mg-Al-RE镁合金的铸造性较差,而且昂贵;
不能进行热处理;
不适合焊接。

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Bewise Inc. www.tool-tool.com

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