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Super-hard zinc alloy for die casing and preparation method and application of super-hard zinc alloy

A zinc alloy and alloy technology, applied in the field of superhard zinc alloy for die casting and its preparation, can solve the problems of large difference in mechanical properties, difficult to use, segregation, etc., and achieve the effect of excellent abnormal temperature mechanical properties

Inactive Publication Date: 2016-03-23
王立鑫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] 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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Examples

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preparation example Construction

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

[0020] 1) Put zinc, cobalt, iron, copper, and aluminum into the crucible of the vacuum melting furnace, evacuate to above 8.8×10-2Pa, and start heating up. After the temperature rises to 850-900°C, stop vacuuming and melt into vacuum Fill the furnace with inert gas to 4.5×104Pa; then continue to heat up to 1300-1350°C, after the zinc, cobalt, iron, and copper are completely dissolved, start filling the zinc, cobalt, iron, and copper alloy liquid with inert gas and stir After 30-40 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 8×10-2Pa, and start to heat up. After the temperature rises to 900-950°C, stop vacuuming and put the Fill in inert gas to 4×104Pa; then continue to heat up to 1300-...

Embodiment 1

[0026] In the embodiment of the present invention, a superhard zinc alloy for die casting is composed of the following components according to mass percentage: 20.5% zinc, 4.5% cobalt, 13.5% iron, 5.9% copper, 2.4% phosphorus, 4.3% chromium, 1.5% manganese %, silicon 0.9%, sulfur 0.5%, molybdenum 1.6%, selenium 0.5%, indium 0.4%, gallium 1.7%, and the balance is aluminum. Its specific preparation method comprises the following steps:

[0027] 1) Put zinc, cobalt, iron, copper, and aluminum into the crucible of the vacuum melting furnace, evacuate to above 8.8×10-2Pa, and start heating up. After the temperature rises to 850-900°C, stop vacuuming and melt into vacuum Fill the furnace with inert gas to 4.5×104Pa; then continue to heat up to 1300-1350°C, after the zinc, cobalt, iron, and copper are completely dissolved, start filling the zinc, cobalt, iron, and copper alloy liquid with inert gas and stir After 30-40 minutes, the alloy liquid is cooled to obtain an intermediate al...

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PUM

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Abstract

The invention discloses super-hard zinc alloy for die casing and a preparation method and application of the super-hard zinc alloy. The zinc alloy is prepared from, by mass, 18.1%-22.5% of zinc, 3.5%-5.5% of cobalt, 11.5%-15.5% of iron, 4.3%-7.4% of copper, 1.2%-3.6% of phosphorus, 3.3%-5.4% of chromium, 0.3%-2.5% of manganese, 0.2%-1.7% of silicon, 0.1%-0.9% of sulfur, 1.1%-2.2% of molybdenum, 0.3%-0.7% of selenium, 0.1%-0.6% of indium, 1.3%-2.3% of gallium and the balance aluminum. According to the super-hard zinc alloy for die casing and the preparation method and application of the super-hard zinc alloy, all the elements and the contents of all the elements are proportioned reasonably, and it is guaranteed that the zinc alloy has the sufficient mechanical property; the zinc alloy not only has the excellent normal-temperature mechanical property but also can still meet use requirements under the condition that the temperature is higher than 150 DEG C, and the zinc alloy can particularly meet the hardness requirement of die-case pieces under high-temperature and heavy-load working conditions.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a superhard zinc alloy for die-casting and its preparation method and application. Background technique [0002] 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. There is a large 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 release generated by friction and wear under heavy load conditions, the temperature of the parts is overheated and it is difficult to use. Contents of the invention [0003] The object of the present invention is to provide a die-cas...

Claims

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Application Information

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IPC IPC(8): C22C21/10C22C30/06C22C1/03B22D17/00C22F1/053
CPCC22C21/10B22D17/00C22C1/026C22C1/03C22C30/02C22C30/06C22F1/053
Inventor 王立鑫
Owner 王立鑫
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