The chemical composition of the zinc die casting parts:
1) Aluminum (Al). Die-cast zinc alloy, typically containing 3.9-4.3% aluminum. Aluminum can improve the strength of the casting, but the casting strength is best when aluminum content is only 3.5% and 7.5%. And aluminum can affect the liquidity of the zinc alloy. Zinc alloy liquidity is best when aluminum content is 0% and 5%. The aluminum content has some influence on the zinc alloy casting, so the control of aluminum content is strictly.
2) Magnesium (Mg). Zinc alloy impurities can lead to intergranular corrosion, traces of magnesium can reduce intergranular corrosion. Too much magnesium content increases the brittleness of the zinc alloy die casting. In production, magnesium is very easy to loss, so the more the number of recycling, magnesium content will be lower.
3) copper (Cu). The effect of copper is similar to magnesium in the zinc alloy, can reduce intergranular corrosion, while increasing the strength of the zinc alloy, but the content exceeds a predetermined range, the dimensional stability of the casting is reduced, because the melting point of copper is higher, the copper content should be controlled in production.
4) iron (Fe). Zinc alloy of iron with aluminum easily generate reaction FeAl3. It is lighter than zinc, can be cleared. Does not affect the mechanical properties and casting properties of castings, but the hard compounds can affect the polishing and machining tool.
The above article from KENOS official website (http://www.kenos-diecasting.com/)
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1) Aluminum (Al). Die-cast zinc alloy, typically containing 3.9-4.3% aluminum. Aluminum can improve the strength of the casting, but the casting strength is best when aluminum content is only 3.5% and 7.5%. And aluminum can affect the liquidity of the zinc alloy. Zinc alloy liquidity is best when aluminum content is 0% and 5%. The aluminum content has some influence on the zinc alloy casting, so the control of aluminum content is strictly.
2) Magnesium (Mg). Zinc alloy impurities can lead to intergranular corrosion, traces of magnesium can reduce intergranular corrosion. Too much magnesium content increases the brittleness of the zinc alloy die casting. In production, magnesium is very easy to loss, so the more the number of recycling, magnesium content will be lower.
3) copper (Cu). The effect of copper is similar to magnesium in the zinc alloy, can reduce intergranular corrosion, while increasing the strength of the zinc alloy, but the content exceeds a predetermined range, the dimensional stability of the casting is reduced, because the melting point of copper is higher, the copper content should be controlled in production.
4) iron (Fe). Zinc alloy of iron with aluminum easily generate reaction FeAl3. It is lighter than zinc, can be cleared. Does not affect the mechanical properties and casting properties of castings, but the hard compounds can affect the polishing and machining tool.
The above article from KENOS official website (http://www.kenos-diecasting.com/)
The original address: http://www.kenos-diecasting.com/news_show_76.html, reproduced please specify. kenosblog1506
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