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A zinc alloy, content technology, applied in zinc alloy. In the field of zinc alloy, it can solve the problems of zinc alloy material decline and harm to human health, and achieve the effect of reducing intergranular corrosion, reducing harm and increasing mechanical properties
Inactive Publication Date: 2012-11-07
SIHUI FENGYIXIN METAL CASTING
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Problems solved by technology
[0004] The present invention proposes a zinc alloy, which solves the problems of the overall decline of the zinc alloy material and the harm to human health caused by excessive harmful impurities in the prior art
Method used
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Embodiment 1
[0013] The content of each element in the zinc alloy is:
[0014] Zinc: 95.5%, Aluminum: 3.68%, Copper: 0.13%, Magnesium: 0.62%, Iron: 0.03%, Lead: 0.0024%, Cadmium: 0.0008%, Tin: 0.0005%, Indium: Less than 0.0002%, Antimony: 0.001% , chromium: 0.0005%, manganese: less than 0.0002%, nickel: 0.0054%, silver: less than 0.0001%.
Embodiment 2
[0016] The content of each element in the zinc alloy is:
[0017] Zinc: 95.4%, Aluminum: 4.21%, Copper: 0.22%, Magnesium: 0.08%, Iron: 0.047%, Lead: 0.0035%, Cadmium: 0.0004%, Tin: 0.0003%, Indium: Less than 0.0003%, Antimony: 0.002% , chromium: 0.0003%, manganese: less than 0.0003%, nickel: 0.0046%, silver: less than 0.0002%.
[0018] The following is the upper limit concentration of six harmful substances stipulated in RoHS:
[0019] Cadmium: less than 100ppm,
[0020] Lead: less than 1000ppm,
[0021] Less than 3500ppm in steel alloy,
[0022] Less than 4000ppm in aluminum alloy,
[0023] Less than 40000ppm in copper alloy,
[0024] Mercury: less than 1000ppm,
[0025] Hexavalent chromium: less than 1000ppm.
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Abstract
The invention provides zinc alloy. The zinc alloy comprises, by weight percent, 3.5%-4.3% of aluminum, 0.1%-0.25% of copper, 0.05%-0.1% of magnesium, the balance of zinc and other impurities, not larger than 0.1% of iron, not larger than 0.005% of lead, not larger than 0.004% of cadmium, and not larger than 0.003% of tin. Melt temperature is controlled at 390-410 DEG C during production of the zinc alloy. Detrimental impurities in the zinc alloy are controlled within the range specified by the RoHs (restriction of hazardous substances) regulation. The performance of the zinc alloy is improved, and harm to environment and human health is reduced.
Description
technical field [0001] The invention relates to the field of alloy materials, in particular to a zinc alloy. Background technique [0002] Alloys are substances with metallic properties formed by the fusion of two or more metals (or metals and nonmetals). The formation of alloys often improves the properties of simple elements, thereby obtaining substances with better performance. Zinc alloys are based on Zinc-based alloys are added with other elements. Alloy elements that are often added include aluminum, copper, magnesium, cadmium, lead, titanium, etc. Zinc alloys have low melting point, good fluidity, easy fusion welding and plastic processing, etc., and are widely used , In today's zinc alloy die-casting market, there are various grades of zinc alloys. Due to non-standard production by manufacturers, the market names are confusing, and substandard products are used. Because users do not understand the properties of materials, substandard products often appear during use....
Claims
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Application Information
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