Zinc-alluminium-based wear-resistant alloy and production thereof

A wear-resistant alloy and alloy material technology, applied in the field of metal materials, can solve the problems of casting defects, affecting the fluidity of liquid metal pouring, etc., and achieve the effects of low production cost, easy industrial production, and good wear resistance.

Inactive Publication Date: 2008-07-09
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this alloy needs to add a lot of treatment agent, and if the treatment is not good, it will cause casting defects, and at the same time, due to the high silicon content, it will affect the fluidity of the liquid metal during pouring.

Method used

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  • Zinc-alluminium-based wear-resistant alloy and production thereof

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0015] Melt 41% pure aluminum ingots, 57.8% pure zinc ingots, 1.2% crystalline silicon, and 0.025% tellurium metal, which account for the total weight of raw materials (the same below), to form zinc, aluminum, silicon, and tellurium alloy liquids; when the alloy liquid When heated to about 710°C, a metal salt composite treatment agent with a total weight of 1.0% of the raw material is pressed into the molten alloy liquid with a bell jar. The main components of the treatment agent are NaF, Na 3 AlF 6 and NaCl, the weight ratio of the three is 2:1.5:0.5. After adding the treatment agent, stir the alloy liquid properly and keep it warm for about 12 minutes. The angular and irregular silicon phase in the alloy will become a flowering silicon phase (such as figure 1 As shown), the wear-resistant enhanced phase is formed spontaneously in the alloy liquid, and after the treatment is completed, it is cast into the corresponding casting. The weight percent of the chemical composition...

Embodiment approach 2

[0017] Melt 50% pure aluminum ingots, 47.7% pure zinc ingots, 2.3% crystalline silicon, and 0.035% metal lanthanum, which account for the total weight of raw materials (the same below), to form zinc, aluminum, silicon, and lanthanum alloy liquids; when the alloy liquid When heated to about 750°C, a metal salt composite treatment agent with a total weight of 1.5% of the raw material is pressed into the molten alloy liquid with a bell jar. The main components of the treatment agent are NaF, Na 3 AlF 6 and NaCl, the weight ratio of the three is 3:1:1. After adding the treatment agent, stir the alloy liquid appropriately and keep it warm for 20 minutes. The angular and irregular silicon phase in the alloy turns into a flower-like silicon phase, and its wear-resistant enhanced phase is formed spontaneously in the alloy liquid. After the treatment, Cast into corresponding castings. The weight percent of the chemical composition of the ZnAlSiL alloy material after treatment is: 50%...

Embodiment approach 3

[0019] 48% pure aluminum ingots, 47% pure zinc ingots, 3.5% crystalline silicon, and 0.025% tellurium metal are melted to form zinc, aluminum, silicon, and tellurium alloy liquids; when the alloy liquids are When heated to about 740°C, a metal salt composite treatment agent with a total weight of 2.0% of the raw material is pressed into the molten alloy liquid with a bell jar. The main components of the treatment agent are NaF, NaF 3 AlF 6 and KCl, the weight ratio of the three is 4:0.5:1.5. After adding the treatment agent, stir the alloy liquid properly and keep it warm for 15 minutes. The angular and irregular silicon phase in the alloy turns into a flower-like silicon phase, and its wear-resistant enhanced phase is formed spontaneously in the alloy liquid. After the treatment, Cast into corresponding castings. The chemical composition of the treated zinc-aluminum-silicon-tellurium alloy material contains 48% of aluminum, 0.02% of tellurium, 3.0% of silicon and the rest i...

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Abstract

The invention is about the wearing allumen material and its preparation. The material based on the allumen with the Si, tellurium or lanthanum. Anthesis Si is distributed in the allumen uniformly. The micromorphic of the Si phase is the nodular cracked polycrystal. The weight content of the composition is Al 40-50%, tellurium or lanthanum 0.02-0.05%, Si 1.0-3.0%, the residue is Zn; the hardness of the alloy in the room temperature is HB130-150. The alloy needn't the applied ceramic intensify particle.

Description

technical field [0001] The invention belongs to the field of metal materials, and relates to a zinc-aluminum-based silicon phase-reinforced wear-resistant alloy material and a preparation method thereof. technical background [0002] At present, zinc-aluminum alloys are mainly used as wear-resistant and friction-reducing materials for the manufacture of bearing bushes, bushings and other parts. Patent CN1140766 aims at the disadvantages of general zinc-aluminum alloys, which have less wear-resistant hard points and poor wear resistance, especially the alloy has poor high-temperature performance and can only be used at temperatures below 120°C. Zinc-aluminum wear-resistant alloys with high tensile strength, good wear resistance and low thermal expansion coefficient. The aluminum content of the alloy is in the range of 22-32wt.%, and contains a certain amount of copper, magnesium, calcium, zirconium and hafnium elements. Besides, it also contains 1.0-10.0wt.% of ceramic part...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/06C22C1/02
Inventor 王玲赵浩峰
Owner NANJING UNIV OF INFORMATION SCI & TECH
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