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Zinc-base alloy

An alloy and zinc-based technology, applied in the field of metal alloy materials, can solve the problems of casting surface foaming, electroplating acceleration, etc., and achieve the effects of increasing strength, reducing reaction ability, and reducing the content of impurities

Inactive Publication Date: 2014-02-05
CHANGSHU LIONY METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As we all know, there are inevitably harmful impurities in zinc-based alloys. These harmful impurities such as lead, cadmium, and tin will gather at the grain junctions to cause intergranular corrosion. The metal matrix is ​​broken due to intergranular corrosion, and electroplating accelerates this scourge. , the part subject to intergranular corrosion will expand and lift up the coating, causing blisters on the surface of the casting

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0024] A zinc-based alloy, the zinc-based alloy is a Zn-Al-Cu-Mg alloy, and the contained elements and mass percentages are: aluminum 5%, copper 0.8%, magnesium 0.06%, iron 0.015%, cadmium 0.001%, Tin 0.001%, the rest is zinc 94.123%.

[0025] The zinc-based alloy has a melting point of 350°C and a density of 4.8g / cm 3 , the thermal conductivity is 150W / m.k, and the tensile strength is 350MPa.

Embodiment 2

[0027] A zinc-based alloy, the zinc-based alloy is a Zn-Al-Cu-Mg alloy, the elements and mass percentages are: 4.8% aluminum, 1% copper, 0.05% magnesium, 0.017% iron, 0.001% cadmium, Tin 0.001%, the rest is zinc 94.131%.

[0028] The zinc-based alloy has a melting point of 350°C and a density of 5g / cm 3 , the thermal conductivity is 150W / m.k, and the tensile strength is 350MPa.

[0029] The invention discloses a zinc-based alloy, which adopts aluminum, copper and magnesium elements in a reasonable proportion, improves the casting performance of the alloy, increases the strength, hardness and fluidity of the alloy, and reduces the reaction ability to harmful impurities; In particular, the content of unavoidable impurities in the alloy is effectively reduced, and the impurities do not contain lead, a metal element harmful to the human body, which reduces intergranular corrosion and makes the alloy have high corrosion resistance. The zinc-based alloy of the invention is suitabl...

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Abstract

The invention discloses a zinc-base alloy. The zinc-base alloy is a Zn-Al-Cu-Mg series alloy and comprises the following elements in percentage by mass: 4%-5.5% of aluminum, 0.8%-1.2% of copper, 0.05%-0.08% of magnesium, not more than 0.02% of iron, not more than 0.001% of lead, not more than 0.002% of cadmium, not more than 0.001% of tin, and the balance of zinc and inevitable impurities, wherein the content of the zinc is no less than 94%, and the total content of the impurities is not more than 0.02%. By the manner, the zinc-base alloy is low in the content of detrimental impurities, has high corrosion resistance, high strength and high wear resistance and is suitable for the casting of metal ornaments and accessories which are high in accuracy and complicated in structure; and castings have high surface quality and are difficult to fracture.

Description

technical field [0001] The invention relates to the field of metal alloy materials, in particular to a zinc-based alloy. Background technique [0002] The main additive elements of zinc-based alloys are aluminum, copper and magnesium, etc., which can be used for casting household appliance accessories, architectural decoration, bathroom accessories, lighting parts, toys, clothing metal accessories, etc. Castings must have high surface quality and good surface treatment Performance, while the common defect of zinc-based alloy die castings is surface blistering. [0003] As we all know, there are inevitably harmful impurities in zinc-based alloys. These harmful impurities such as lead, cadmium, and tin will gather at the grain junctions to cause intergranular corrosion. The metal matrix is ​​broken due to intergranular corrosion, and electroplating accelerates this scourge. , the part affected by intergranular corrosion will expand and lift the coating, causing blistering on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C18/04
Inventor 陈保云
Owner CHANGSHU LIONY METALS
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