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High-strength and high-tenacity zinc alloy bar/wire and preparation method thereof

A technology of alloy rods and alloy wires, applied in the field of high-strength and tough zinc alloy rods/wires and their preparation, can solve problems such as stress corrosion, dimensional instability, aging failure, etc., and achieve the effect of improving strength and plasticity

Active Publication Date: 2016-06-01
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the addition of alloying elements, Zn-Al(-Cu-Mg) alloys are prone to pitting corrosion, stress corrosion, and intergranular corrosion, showing a decline in mechanical properties, dimensional instability, etc., and aging failure
Although the Zn-Cu-Ti alloy has excellent creep resistance, the tensile strength of the deformed Zn-Cu-Ti alloy is 250-350MPa, which only reaches the level of the soft state of brass, resulting in a limited range of applications.

Method used

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  • High-strength and high-tenacity zinc alloy bar/wire and preparation method thereof
  • High-strength and high-tenacity zinc alloy bar/wire and preparation method thereof
  • High-strength and high-tenacity zinc alloy bar/wire and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] High-strength and tough zinc alloy rod / wire, the components are: Mn: 0.8%, Mg: 0.18%, unavoidable impurities ≤ 0.3%, and the balance is Zn.

[0047] The preparation method of high strength and toughness zinc alloy comprises the following steps:

[0048] Step 1, melting and casting: weigh the ingredients according to the mass percentage of the high-strength and tough zinc alloy; heat the pure metal zinc to 550°C in a graphite crucible, add metal magnesium and metal manganese in turn after all the metals are melted, and stir until all the metals are melted. Mix evenly to obtain a zinc alloy melt; reduce the temperature of the melt to 480°C, and use a graphite bell jar to add hexachloroethane to the melt, and the amount of hexachloroethane added is 0.35% of the mass of the melt , and then kept at 480°C for 20 minutes; the melt temperature was lowered to 440°C for casting, and the mold was cooled by water during the casting process to obtain a cylindrical ingot with a diame...

Embodiment 2

[0055] High-strength and tough zinc alloy rods / wires, the components are: Mn: 2%, Mg: 1%, unavoidable impurities ≤ 0.3%, and the balance is Zn;

[0056] The preparation method of high strength and toughness zinc alloy comprises the following steps:

[0057] Step 1, melting and casting: weigh the ingredients according to the mass percentage of the high-strength and tough zinc alloy; heat the pure metal zinc to 550°C in a graphite crucible, add metal magnesium and metal manganese in turn after all the metals are melted, and stir until all the metals are melted. Mix evenly to obtain a zinc alloy melt; reduce the temperature of the melt to 480° C., add hexachloroethane to the melt by using a graphite bell jar, and the addition amount of hexachloroethane is 0.4% of the melt mass , and then kept at 480 °C for 20 minutes; the melt temperature was lowered to 460 °C, and casting was performed. During the casting process, the mold was cooled by water to obtain a cylindrical ingot with a...

Embodiment 3

[0064] High strength and toughness zinc alloy rod / wire, the components are: Mn: 0.5%, Mg: 0.05%, unavoidable impurities ≤ 0.3%, and the balance is Zn.

[0065] The preparation method of high strength and toughness zinc alloy comprises the following steps:

[0066] Step 1, melting and casting: weigh the ingredients according to the mass percentage of the high-strength and tough zinc alloy; heat the pure metal zinc to 550°C in a graphite crucible, add metal magnesium and metal manganese in turn after all the metals are melted, and stir until all the metals are melted. Mix evenly to obtain a zinc alloy melt; reduce the temperature of the melt to 480° C., add hexachloroethane to the melt by using a graphite bell jar, and the addition amount of hexachloroethane is 0.45% of the melt mass , and then kept at 480 °C for 15 minutes; the melt temperature was reduced to 450 °C, and casting was performed. During the casting process, the mold was cooled by water to obtain a cylindrical ingo...

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Abstract

The invention belongs to the technical field of alloy materials, and relates to a high-strength and high-tenacity zinc alloy bar / wire and a preparation method thereof. High-strength and high-tenacity zinc alloy compositions comprise, by mass percent, 0.5%-2% of Mn, 0.05%-1% of Mg, not larger than 0.3% of inevitable impurities and the balance Zn. The preparation method of the high-strength and high-tenacity zinc alloy bar / wire comprises the steps that batching is carried out according to the compositions, zinc alloy melt is obtained after melting, 0.3%-0.5% of hexachloroethane is added, casting is carried out at the temperature ranging from 430 DEG C to 470 DEG C, and a cylindrical cast ingot with the diameter ranging from 40 mm to 60 mm is obtained; the cast ingot is subjected to homogenization treatment, reverse hot extrusion is carried out at the temperature ranging from 140 DEG C to 310 DEG C, and the high-strength and high-tenacity zinc alloy bar is obtained; and the bar is subjected to room temperature drawing and intermediate annealing, and the high-strength and high-tenacity zinc alloy wire is obtained. The prepared high-strength and high-tenacity zinc alloy comprises few compositions, has the beneficial effects of being high in strength and tenacity, and is diversified in processing manner and wide in appearance dimension change range, and the corrosion rate of the alloy is 10%-25% of that of pure Zn under the same condition.

Description

technical field [0001] The invention belongs to the technical field of alloy materials, and in particular relates to a high-strength and toughness zinc alloy bar / wire and a preparation method thereof. Background technique [0002] With social development and economic progress, the application of copper and copper alloys is becoming more and more extensive. However, with the mining and consumption of copper resources, its price is constantly rising. Therefore, it is more and more urgent to find new substitute materials for copper and its alloys to meet the needs of modern industry and social development. Zinc and zinc alloys have excellent anti-friction properties, high damping properties, suitable mechanical properties, low melting point and good melt fluidity, making zinc and zinc alloys excellent substitutes for copper alloys. At present, zinc-based alloys mainly include Zn-Al and Zn-Cu systems. Among them, Zn-Al(-Cu-Mg) alloy has received extensive attention as a subst...

Claims

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Application Information

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IPC IPC(8): C22C18/00C22C1/02C22F1/16
CPCC22C1/02C22C18/00C22F1/165
Inventor 秦高梧王利卿任玉平李松
Owner NORTHEASTERN UNIV
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