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High-strength high-toughness wear-resisting extrusion-resisting zinc alloy U profile for engineering machinery and preparation method thereof

A technology of construction machinery and zinc alloy, which is applied in the field of extruded zinc alloy profiles and its preparation, high-strength, high-toughness and wear-resistant extruded zinc alloy U-profiles for construction machinery and its preparation, and can solve the problems of low plasticity and toughness of alloys

Active Publication Date: 2015-07-29
NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is produced by casting method, and the plasticity and toughness of the alloy are low (1-3% elongation).

Method used

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  • High-strength high-toughness wear-resisting extrusion-resisting zinc alloy U profile for engineering machinery and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] U profile width 32mm, height 32mm, wall thickness 8mm. Ingot size Φ120X450, extrusion cylinder diameter Φ125, extrusion ratio 19.

[0029] According to the composition ratio (mass percentage): 26.0% Al, 2.50% Cu, 0.025% Mg, 0.06% Ti, 0.012% B, 0.006% C, the balance is Zn and unavoidable impurity elements, the control range of impurity elements is: Fe≤0.1%, Pb≤0.004%, Sn≤0.002%, Cd≤0.003%.

[0030] The preparation method is as follows: Weigh electrolytic aluminum, electrolytic copper, and zinc ingots, put them into a preheated graphite crucible, and melt in a resistance furnace to control the temperature at 700°C. After it is completely melted, use a refining agent to remove slag and degas, and then stand still to remove slag. Add Mg-10%Al master alloy and Al-5%Ti-1%B-0.5%C master alloy with a preheating temperature of 200-300°C. After they are completely melted, stir the molten metal evenly and let it stand for 10 minutes. The ingot is cast by metal mold, and the pou...

Embodiment 2

[0038] U profile width 32mm, height 32mm, wall thickness 8mm. Ingot size Φ120X450, extrusion cylinder diameter Φ125, extrusion ratio 19.

[0039] According to the composition ratio (mass percentage): 26.0% Al, 2.50% Cu, 0.035% Mg, 0.06% Ti, 0.012% B, 0.006% C, the balance is Zn and unavoidable impurity elements, the control range of impurity elements is: Fe≤0.1%, Pb≤0.004%, Sn≤0.002%, Cd≤0.003%.

[0040]The preparation method is as follows: Weigh electrolytic aluminum, electrolytic copper and zinc ingots, put them into a preheated graphite crucible, and control the temperature for melting in a resistance furnace to 700 DEG C. After all melting, use refining agent to remove slag and degas, and then let it stand for slag removal. Add Mg-10%Al master alloy and Al-5%Ti-1%B-0.5%C master alloy with preheating temperature of 200℃~300℃. After all melted, stir the molten metal evenly and let it stand for 10 minutes. minute. The ingot is cast by metal mold, and the pouring temperatu...

Embodiment 3

[0048] The U profile is 32mm wide, 32mm high and 8mm thick. The size of the ingot is Φ120X450, the diameter of the extrusion cylinder is Φ125mm, and the extrusion ratio is 19.

[0049] According to the composition ratio (mass percentage): 26.0% Al, 3.50% Cu, 0.025% Mg, 0.06% Ti, 0.012% B, 0.006% C, the balance is Zn and unavoidable impurity elements, and the control range of impurity elements is: Fe≤0.1%, Pb≤0.004%, Sn≤0.002%, Cd≤0.003%.

[0050] The preparation method is as follows: Weigh electrolytic aluminum, electrolytic copper and zinc ingots, put them into a preheated graphite crucible, and control the temperature for melting in a resistance furnace to 700 DEG C. After all melting, use refining agent to remove slag and degas, and then let it stand for slag removal. Add Mg-10%Al master alloy and Al-5%Ti-1%B-0.5%C master alloy with preheating temperature of 200℃~300℃. After all melted, stir the molten metal evenly and let it stand for 10 minutes. minute. The ingot is c...

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Abstract

The invention relates to a high-strength high-toughness wear-resisting extrusion-resisting zinc alloy U profile for engineering machinery and a preparation method thereof. The preparation method comprises the following steps: selecting pure metal or intermediate alloy according to mass percent of ingredients, heating and melting in a pot resistance furnace and casting the melted pure metal or intermediate alloy into ingots; homogenizing the ingots at 280-360 DEG C; placing the homogenized ingots in an extrusion container of an extrusion machine, and performing extrusion forming at 260-340 DEG C; intercepting the extruded U profile by required length, placing into a chamber electric furnace, heating and then performing water quenching. Through the combination of alloy composition optimization and fabrication processing, the high-strength high-toughness wear-resisting extrusion-resisting zinc alloy U profile is obtained.

Description

technical field [0001] The invention relates to an extruded zinc alloy profile and a preparation method, in particular to a high-strength, high-toughness and wear-resistant extruded zinc alloy U-profile for construction machinery and a preparation method, belonging to the field of new nonferrous metal material manufacturing. Background technique [0002] At present, U-shaped guide grooves (or guide grooves, wear-resistant plates) for domestic construction machinery are mainly made of copper alloy materials, such as aluminum bronze, tin bronze, etc., which are produced in a single piece by casting method and used after machining. Therefore, the cost of raw materials is high and the production efficiency is low. [0003] Compared with copper alloy materials, it is made of high-aluminum-zinc alloy materials, which has low raw material costs, abundant material sources, and less energy consumption for melting. However, it is produced by casting, and the plasticity and toughness ...

Claims

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Application Information

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IPC IPC(8): C22C18/04C22F1/16
Inventor 田长文王龙刘运腾张新恩荣晓宇
Owner NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI