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Preparation method of cast abrasion-resistant corrosion-resistant zinc aluminum alloy

A zinc-aluminum alloy, corrosion-resistant technology, applied in the field of new zinc-based bearing and bushing materials, can solve problems such as temperature rise, low tensile strength, limited application, etc., and achieve the effect of broad social application prospects and high strength

Active Publication Date: 2012-10-10
ZHENJIANG YINHAI ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the temperature rises, its strength and hardness drop sharply. After exceeding 150°C, the tensile strength is lower than that of aluminum alloy and copper alloy, which seriously limits its application in high temperature environments.

Method used

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  • Preparation method of cast abrasion-resistant corrosion-resistant zinc aluminum alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for preparing a wear-resistant and corrosion-resistant zinc-aluminum alloy material comprises the following steps:

[0021] (1) First heat the box-type medium-temperature resistance furnace to 750°C, and then put the crucibles containing aluminum ingots, aluminum-copper master alloys, aluminum-manganese master alloys and aluminum-nickel master alloys into the box-type medium-temperature resistance furnace respectively, and wait for them to After all melting, the temperature is lowered to 700°C, and then the zinc ingot is put into it. After 30 minutes of heat preservation, the slag is removed and a covering agent is added. The covering agent is a mixture of 50% by mass NaCl and 50% by mass of KCl, and then Degas and remove impurities with hexachloroethane to obtain molten metal;

[0022] (2) Electromagnetic stirring equipment is used for electromagnetic stirring blank making. The equipment includes a voltage regulating transformer and a stirring device. The rate...

Embodiment 2

[0025] A method for preparing a wear-resistant and corrosion-resistant zinc-aluminum alloy material comprises the following steps:

[0026] (1) First heat the box-type medium-temperature resistance furnace to 750°C, and then put the crucibles containing aluminum ingots, aluminum-copper master alloys, aluminum-manganese master alloys and aluminum-nickel master alloys into the box-type medium-temperature resistance furnace respectively, and wait for them to After all melting, the temperature is lowered to 700°C, and then the zinc ingot is put into it. After 30 minutes of heat preservation, the slag is removed and a covering agent is added. The covering agent is a mixture of 50% by mass NaCl and 50% by mass of KCl, and then Degas and remove impurities with hexachloroethane to obtain molten metal;

[0027] (2) Electromagnetic stirring equipment is used for electromagnetic stirring blank making. The equipment includes a voltage regulating transformer and a stirring device. The rate...

Embodiment 3

[0030] A method for preparing a wear-resistant and corrosion-resistant zinc-aluminum alloy material comprises the following steps:

[0031] (1) First heat the box-type medium-temperature resistance furnace to 750°C, and then put the crucibles containing aluminum ingots, aluminum-copper master alloys, aluminum-manganese master alloys and aluminum-nickel master alloys into the box-type medium-temperature resistance furnace respectively, and wait for them to After all melting, the temperature is lowered to 700°C, and then the zinc ingot is put into it. After 30 minutes of heat preservation, the slag is removed and a covering agent is added. The covering agent is a mixture of 50% by mass NaCl and 50% by mass of KCl, and then Degas and remove impurities with hexachloroethane to obtain molten metal;

[0032] (2) Electromagnetic stirring equipment is used for electromagnetic stirring blank making. The equipment includes a voltage regulating transformer and a stirring device. The rate...

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Abstract

The invention discloses an abrasion-resistant corrosion-resistant zinc aluminum alloy material, which comprises the following components in percentage by weight: 27 to 43.5 percent of Al, 1.5 to 2.5 percent of Cu, 0.2 to 1.0 percent of Mn, 0.1 to 0.9 percent of Ni and the balance of Zn and inevitable impurities. The preparation method comprises the following steps of: putting a crucible filled with an aluminum ingot, the aluminum bronze intermediate alloy, the aluminum manganese intermediate alloy, and the aluminum nickel intermediate alloy into a resistor furnace, smelting and reducing the temperature; putting a zinc ingot, keeping the temperature, slagging off, adding a covering agent and removing impurities to prepare metal liquid; and making blanks by using electromagnetic stirring equipment. The cast abrasion-resistant corrosion-resistant zinc aluminum alloy material has the advantages of higher strength, abrasion resistance and corrosion resistance. The abrasion-resistant corrosion-resistant zinc aluminum alloy can be used for a main shaft sleeve of a diesel engine, a shaft sleeve of a thrust wheel and a leading shaft of a crawler dozer, a loading machine and an excavator traveling mechanism, and the like. As expected, the abrasion-resistant corrosion-resistant zinc aluminum alloy material has wide social application prospect along with the improvement of the performanceand gradual development of the potential market of the zinc aluminum alloy material.

Description

technical field [0001] The invention relates to a cast wear-resistant and corrosion-resistant zinc-aluminum alloy and a preparation method thereof, belonging to the field of novel zinc-based bearing and shaft sleeve materials. Background technique [0002] Zinc-aluminum alloy has low melting point and good mechanical properties, so it has been widely used in industry. The castings made of this alloy system are mainly used in five aspects: one is components, such as for papermaking machinery, textile machinery, brick making machinery, road construction machinery, metallurgical machinery, lifting machinery, printing machinery, plastic machinery and mining machinery Machinery and other accessories; the second is bearing bushes, bearings, skateboards and sliders, etc.; the third is automobile and tractor accessories; the fourth is molds, such as casting molds, blow molding molds, pressing molds, and punching molds; fifth is decorative crafts . In addition, it has good machinab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C18/04C22C1/03B22D27/02
Inventor 曲迎东刘敬福李荣德白彦华马广辉
Owner ZHENJIANG YINHAI ALUMINUM
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