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High-pressure treatment process for Zn-Al-Cu-Mg alloy

A zn-al-cu-mg, high-pressure treatment technology, applied in the field of Zn-Al-Cu-Mg alloy high-pressure treatment process

Inactive Publication Date: 2016-03-30
黄晓艺
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the past, some progress has been made in the mechanism of tissue phase transformation and formation of new phases, but there is still little research on mechanical properties. In the test, the hardness and tensile strength of high mechanical pressure samples were tested. Compare the properties of the ZA27 alloy and discuss the mechanism of the influence of pressure on the mechanical properties

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  • High-pressure treatment process for Zn-Al-Cu-Mg alloy

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Embodiment Construction

[0008] The raw materials are made of No. 1 zinc, No. 0 aluminum, pure magnesium ingot, and Al-Cu master alloy, which are smelted in a 6kW resistance furnace. During smelting, the alloy is heated to 660~680℃, and the temperature is adjusted to 620℃ with some Zn materials.

[0009] The mold is a metal mold, which is preheated to 150~200℃ before pouring. The actual composition (mass fraction) of the ZA27 alloy sample is 27.1% Al, 0.6% Cu, 0.02% Mg, and the rest is zinc. Cut the test bar into small cylindrical samples of Φ6mm×6mm. The high-pressure test was carried out on a CS-1B high-pressure six-sided top press. The sample is wrapped with BN powder, and pyrophyllite is used as a sealing and pressure-transmitting material. After raising the pressure to the specified pressure, start heating to the melting temperature of the alloy, and stop heating after maintaining the pressure for 5 minutes. After the sample is cooled to room temperature, release the pressure and take out the ...

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Abstract

The invention discloses a high-pressure treatment process for Zn-Al-Cu-Mg alloy. The high-pressure treatment process is characterized in that the Zn-Al-Cu-Mg alloy comprises, by mass, 27.1% of Al, 0.6% of Cu, 0.02% of Mg, and the balance Zn, and raw materials comprise No.1 Zn, No.0 Al, pure magnesium ingots and Al-Cu intermediate alloy; the raw materials are smelted in a 6kW resistance furnace, the alloy is heated to 660-680 DEG C during smelting, and the temperature is regulated to 620 DEG C through part of the Zn material; after modification, refining and slagging-off, a metal mold test bar is cast at the temperature of 550-600 DEG C; a metal mold is used as a metal mold, and the metal mold is preheated to 150-200 DEG C before casting; a high-pressure test is carried out on a CS-1B type high-pressure cubic press; a test specimen is wrapped by BN powder, and pyrophyllite is used as a seal as well as a pressure transfer material; after pressure is increased to assigned pressure, heating is started until the alloy smelting temperature is reached, and heating is stopped after heat preservation and pressure preservation are conducted for 5 min; and when the test specimen is cooled to the room temperature, pressure relief is conducted, and the test specimen is taken out.

Description

technical field [0001] The invention relates to a processing technology of Zn-Al-Cu-Mg alloy, in particular to a high-pressure processing technology of Zn-Al-Cu-Mg alloy. Background technique [0002] Zinc-aluminum series alloys are diversified alloys mainly composed of zinc and aluminum, supplemented by copper and magnesium. They have good mechanical properties, excellent casting process performance, good friction and wear characteristics, low raw material cost and melting point. It has the characteristics of low energy consumption and no pollution to the environment. In recent years, the research and application of zinc-aluminum alloy series have developed rapidly. Among them, ZA27 alloy is more prominent because of its high tensile strength (above 400MPa), excellent wear resistance, low specific gravity, and simple melting. It has become a strong competitor of copper alloys and some aluminum alloys in many occasions, and thus has become the object of deeper research in t...

Claims

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Application Information

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IPC IPC(8): C22F1/16
Inventor 黄晓艺
Owner 黄晓艺
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