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High-toughness wear-resistant zinc alloy and preparation method thereof

A preparation process, zinc alloy technology, applied in the field of high toughness and high strength wear-resistant zinc alloy, high toughness and high strength wear-resistant zinc alloy preparation process, can solve the problems of high friction coefficient, low service temperature, and unsatisfactory wear resistance, etc. , to achieve high mechanical properties and improve service life

Inactive Publication Date: 2014-02-12
江苏新亚特钢锻造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the traditional high-strength zinc-based alloys have the disadvantages of high friction coefficient, unsatisfactory wear resistance, and low service temperature. etc.) the plastic toughness is not enough, which greatly limits the scope of application of zinc alloy instead of copper alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A process for preparing a high-toughness, high-strength, and wear-resistant zinc alloy. The alloy composition is: ZA27 zinc-based alloy 98.5, composite modifier 1.0%, ZnCl 2 Refining agent 0.5%; the weight percent ratio of its compound modifier components is: La5~10%, Ce5~10%, Y5~10%, Ti15~35%, B15~20%, K 2 ZrF 6 10-15%.

[0017] Its preparation method comprises the following processes:

[0018] 1. The materials are industrial zinc ingots, industrial aluminum ingots, industrial magnesium ingots and copper, which are melted in a graphite crucible resistance furnace according to the composition of the ZA27 zinc-based alloy. After the zinc-based alloy is completely melted at 600-630°C, add 0.25% ZnCl 2 refining agent refining, standing;

[0019] 2. Add 1.0% compound modifier, and press it with a bell jar to melt at the bottom of the crucible;

[0020] 3. After all melted, add 0.25% ZnCl again 2 Refining with refining agent, standing still, removing slag and degassing;...

Embodiment 2

[0023] A process for preparing a high-toughness, high-strength, wear-resistant zinc alloy. The alloy composition is: ZA12 zinc-based alloy 98.8, composite modifier 0.8%, ZnCl 2 Refining agent 0.4%; the weight percent ratio of its compound modifier components is: La5~10%, Ce5~10%, Y5~10%, Ti15~35%, B15~20%, K 2 ZrF 6 10-15%.

[0024] Its preparation method comprises the following processes:

[0025] 1. The materials are industrial zinc ingots, industrial aluminum ingots, industrial magnesium ingots and copper, which are melted in a graphite crucible resistance furnace according to the ZA12 zinc-based alloy composition. After the zinc-based alloy is completely melted at 600-630°C, add 0.2% ZnCl 2 refining agent refining, standing;

[0026] 2. Add 0.8% compound modificator, and use a bell jar to press until the bottom of the crucible melts;

[0027] 3. After all melted, add 0.2% ZnCl again 2 Refining with refining agent, standing still, removing slag and degassing;

[0028]...

Embodiment 3

[0030] A process for preparing a high-toughness, high-strength, wear-resistant zinc alloy. The alloy composition is: ZA8 zinc-based alloy 99.0, composite modifier 0.6%, ZnCl 2 Refining agent 0.4%; the weight percent ratio of its compound modifier components is: La5~10%, Ce5~10%, Y5~10%, Ti15~35%, B15~20%, K 2 ZrF 6 10-15%.

[0031] Its preparation method comprises the following processes:

[0032] 1. The materials are industrial zinc ingots, industrial aluminum ingots, industrial magnesium ingots and copper, which are melted in a graphite crucible resistance furnace according to the composition of the ZA8 zinc-based alloy. After the zinc-based alloy is completely melted at 600-630°C, add 0.2% ZnCl 2 refining agent refining, standing;

[0033] 2. Add 0.6% compound modificator, and use a bell jar to press until the bottom of the crucible melts;

[0034] 3. After all melted, add 0.2% ZnCl again 2 Refining with refining agent, standing still, removing slag and degassing;

[...

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Abstract

The invention discloses a high-toughness wear-resistant zinc alloy and a preparation method thereof. The high-toughness wear-resistant zinc alloy is characterized in that the high-toughness wear-resistant zinc alloy consists of a matrix alloy, a composite inoculation modifier and a refining agent, wherein ZA8 or ZA12 or ZA27 zinc base alloy accounts for 98.0%-99.9%, the composite modifier accounts for 0.5%-1.5%, and the ZnCl2 refining agent accounts for 0.4%-0.5%; the composite modifier comprises the following components in percentage by weight: 5%-10% of La, 5%-10% of Ce, 5%-10% of Y, 15%-35% of Ti, 15%-20% of B and 10%-15% of K2ZrF6. The refining agent is added for refining after melting the zinc base alloy, and the composite modifier is added for carrying out modification treatment, and the zinc base alloy is directly cast to a sand mould or a metal mould. Compared with the prior art, the high-toughness wear-resistant zinc alloy disclosed by the invention has higher mechanical performance, the mechanical performance under a casting state has pressure of sigma b450MPa, sigma 5 not less than 10.5% and HB (Brinell Hardness) not less than 139, so that the zinc base alloy is expanded to replacing tin-free bronze and other copper alloys from replacing tin bronze, and therefore, the service life of the zinc base alloy material is prolonged.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and relates to a high-toughness, high-strength, wear-resistant zinc alloy, in particular to a preparation process of a high-toughness, high-strength, wear-resistant zinc alloy. Background technique [0002] Zinc-aluminum casting alloy is a new type of engineering material that has been developed rapidly in the past 20 years. With its good mechanical properties, casting properties and processing properties, low cost, small specific gravity, simple casting process, and wide adaptability to forming processes, it has been widely used at home and abroad, and has become an excellent substitute for a series of copper-based alloys. It has huge economic and social benefits. Copper is scarce and expensive in my country, while zinc is rich and cheap. The development of zinc alloys in my country is of great significance. [0003] However, the traditional high-strength zinc-based alloys have the dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C18/04C22C1/06
Inventor 张莹丁刚丁家伟耿德英谢宗翰郭洪才印杰孙健唐华平
Owner 江苏新亚特钢锻造有限公司