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A low creep zinc alloy

A zinc alloy, low-creep technology, applied in the field of low-creep zinc alloy, can solve the problems of dimensional change and poor creep resistance, and achieve the effect of reducing creep rate and improving creep resistance

Active Publication Date: 2017-10-10
宁夏鼎辉科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Zinc alloy has good mechanical properties, wear resistance and anti-friction properties, and can be used to replace some copper alloys or even aluminum alloys, but its disadvantage is that it has poor creep resistance and is prone to dimensional changes caused by natural aging.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] A low-creep zinc alloy, composed of the following components by weight percentage: 3.8% aluminum, 2.7% copper, 0.035% magnesium, 0.05% strontium, the weight ratio of germanium to strontium = 0.5:1, and the balance is zinc .

[0010] (1) Ingredients: ingredients according to the above weight percentage;

[0011] (2) Put the prepared raw materials in the smelting furnace, melt them at 600°C, check the alloy composition, and make up for the insufficient components;

[0012] (3) The smelted alloy solution is cast at 500°C to obtain a zinc alloy with a steady-state creep rate of 1.31×10 -8 (S -1 , 25°C, 100MPa).

Embodiment 2

[0014] A low-creep zinc alloy, which is composed of the following components by weight percentage: 4.0% aluminum, 3.0% copper, 0.032% magnesium, 0.07% strontium, the weight ratio of germanium to strontium = 0.8:1, and the balance is zinc .

[0015] (1) Ingredients: ingredients according to the above weight percentage;

[0016] (2) Put the prepared raw materials in the smelting furnace, melt them at 650°C, check the alloy composition, and make up for the insufficient components;

[0017] (3) The smelted alloy solution is cast at 550°C to obtain a zinc alloy with a steady-state creep rate of 1.54×10 -8 (s -1 , 25°C, 100MPa).

Embodiment 3

[0019] A low-creep zinc alloy, which is composed of the following components by weight percentage: 4.3% aluminum, 3.3% copper, 0.03% magnesium, 0.08% strontium, the weight ratio of germanium to strontium = 0.6:1, and the balance is zinc .

[0020] (1) Ingredients: ingredients according to the above weight percentage;

[0021] (2) Put the prepared raw materials in the melting furnace, melt them at 680°C, check the alloy composition, and make up for the insufficient components;

[0022] (3) The smelted alloy solution is cast at 550°C to obtain a zinc alloy with a steady-state creep rate of 2.15×10 -8 (s -1 , 25°C, 100MPa).

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PUM

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Abstract

The invention discloses low-creep zinc alloy. The low-creep zinc alloy is composed of the following components: by weight, 3.8%-4.3% of aluminum, 2.7%-3.3% of copper, 0.03%-0.05% of magnesium, 0.05%-0.08% of strontium, and the balance zinc; the weight ratio of germanium to the strontium is (0. 5-0.8): 1. Compared with the prior art, according to the low-creep zinc alloy, the strontium and the germanium serve as modificators, and by adjusting the use amount of the strontium and the germanium, the creep rate of the zinc alloy is lowered obviously, and the creep resistance of the zinc alloy is improved.

Description

technical field [0001] The invention relates to a low-creep zinc alloy. Background technique [0002] Zinc alloy has good mechanical properties, wear resistance and friction reduction properties, and can be used to replace some copper alloys and even aluminum alloys, but its disadvantage is that it has poor creep resistance and is prone to dimensional changes caused by natural aging. Contents of the invention [0003] The technical problem to be solved by the invention is to overcome the existing defects and provide a low-creep zinc alloy. [0004] In order to solve the problems of the technologies described above, the present invention provides the following technical solutions: [0005] A low-creep zinc alloy, which is composed of the following components by weight percentage: 3.8-4.3% aluminum, 2.7-3.3% copper, 0.03-0.05% magnesium, 0.05-0.08% strontium, germanium and strontium by weight Ratio=(0.5-0.8):1, the balance is zinc. [0006] In the invention, strontium and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C18/04
Inventor 邓义增
Owner 宁夏鼎辉科技有限公司
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