Die-casting high-brightness zinc alloy as well as preparation method and application thereof

A zinc alloy and die-casting technology, applied in the field of high-brightness zinc alloy for die-casting and its preparation, can solve the problems of large difference in mechanical properties, segregation, low service temperature, etc., achieve excellent abnormal temperature mechanical properties, optimize process parameters, surface bright effect

Inactive Publication Date: 2016-02-10
王立鑫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing zinc alloy materials for die casting usually include aluminum, iron, copper, zinc and other components. Due to the different content of each element in the alloy, the spatial distribution of each element in the alloy is quite different, resulting in different comprehensive properties of each alloy, especially the mechanical properties. Big difference in performance
The casting process is prone to defects such as porosity and segregation, and its service temperature is also low. Often due to the large amount of heat generated by friction and wear under heavy load conditions, the temperature of the parts is overheated and it is difficult to use

Method used

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preparation example Construction

[0019] The present invention also provides a method for preparing a high-brightness zinc alloy for die-casting, comprising the following steps:

[0020] 1) Put zinc, copper, iron, and aluminum into the crucible of the vacuum melting furnace, evacuate to above 8.5×10-2Pa, and start to heat up. After the temperature rises to 920-935°C, stop vacuuming and put the Fill inert gas to 5×104Pa; then continue to heat up to 1250-1300°C, after zinc, diphenylsulfonylimide, iron, and copper are completely dissolved, start filling inert gas in the zinc, copper, iron, and aluminum alloy liquids Gas and stir for 40-42 minutes, the alloy liquid is cooled to obtain an intermediate alloy;

[0021] 2) Add the master alloy and other remaining components into the crucible of the vacuum melting furnace, evacuate to above 9.2×10-2Pa, and start to heat up. After the temperature rises to 920-940°C, stop vacuuming and put the Fill in inert gas to 4×104Pa; then continue to heat up to 1400-1450°C until t...

Embodiment 1

[0026] In the embodiment of the present invention, a high-brightness zinc alloy for die casting is composed of the following components according to mass percentage: 30% zinc, 16% copper, 10% aluminum, 0.46% lanthanum, 0.5% chromium, 08% manganese, 0.4% nickel %, beryllium 0.4%, cadmium 0.3-0.6%, scandium 0.5%, diphenylsulfonylimide 3%, allyl sodium sulfonate 2%, and the balance is iron.

[0027] The present invention also provides a method for preparing a high-brightness zinc alloy for die-casting, comprising the following steps:

[0028] 1) Put zinc, copper, iron, and aluminum into the crucible of the vacuum melting furnace, evacuate to above 8.5×10-2Pa, and start to heat up. After the temperature rises to 920-935°C, stop vacuuming and put the Fill inert gas to 5×104Pa; then continue to heat up to 1250-1300°C, after zinc, diphenylsulfonylimide, iron, and copper are completely dissolved, start filling inert gas in the zinc, copper, iron, and aluminum alloy liquids Gas and st...

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PUM

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Abstract

The invention discloses a die-casting high-brightness zinc alloy as well as a preparation method and application thereof. The zinc alloy consists of the following components in percentage by mass: 25-35% of zinc, 10-20% of copper, 5-15% of aluminum, 0.2-1% of lanthanum, 0.1-0.9% of chromium, 0.3-1.3% of manganese, 0.2-0.6% of nickel, 0.1-0.8% of beryllium, 0.1-0.8% of cadmium, 0.3-0.7% of scandium, 1-5% of bisphenylsulfonyl imine, 1-3% of sodium allylsulfonate and the balance of iron. The components and the content thereof in the zinc alloy disclosed by the invention are reasonably configured to ensure that the zinc alloy has sufficient mechanical properties, has a bright surface, not only has excellent normal-temperature mechanical properties but also optimizes process parameters of die casting and inert gas pressure parameters during refining, and is suitable for hardness requirements of preparing die castings under a high-temperature heavy-load working condition.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a high-brightness zinc alloy for die-casting and its preparation method and application. Background technique [0002] Die-casting is a kind of pressure-casting part. It uses a pressure-casting mechanical die-casting machine with a casting mold installed, and pours metals such as copper, zinc, aluminum or zinc alloy heated into a liquid state into the feed port of the die-casting machine, and passes through the die-casting machine. Die casting, casting copper, zinc, aluminum parts or zinc alloy parts of the shape and size limited by the mold, such parts are usually called die castings. Die castings are widely used in various industries such as automobile manufacturing, internal combustion engine production, motorcycle manufacturing, motor manufacturing, oil pump manufacturing, transmission machinery manufacturing, precision instruments, landscaping, electric power construction, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/06C22C1/03C22F1/16
Inventor 王立鑫
Owner 王立鑫
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