3种免热处理压铸铝合金对模具钢的侵蚀性研究

Research on Corrosion to Die Steels of 3 Heat Treatment-Free Die Casting Aluminum Alloys

通过将模具钢浸入熔融铝合金液中并进行动态旋转熔损试验,研究了3种大型一体压铸用免热处理铝合金材料对2种典型压铸模具钢的侵蚀作用。结果表明:经20 min旋转熔损试验后,1#铝合金液中的模具钢表面侵蚀面积最小、质量损失最小、对模具钢的侵蚀最轻,因此,3种免热处理压铸铝合金中,1#铝合金的粘模倾向最小。应用新型免热处理材料时,应选择与该免热处理材料粘模适配性好的模具材料,以获得最小的侵蚀质量损失,保证模具寿命。

In this paper,corrosion properties of 3 heat treatment-free die casting aluminum alloys to 2 typical integrated die casting die steels are studied through dynamic rotary immersion test in molten aluminum alloy.The results show that after 20 min rotary immersion test,die steel samples in 1#molten aluminum alloy has the smallest corrosion area and mass loss.As a result,1#aluminum alloy has the smallest die soldering tendency.Therefore,in the application of new heat treatment-free material,it is important to choose a die material which fits well with this heat treatment-free die casting aluminum alloy to obtain the smallest corrosion mass loss,and ensure the service life of die.