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Method for smelting high-magnesium zinc-based alloy

A high-magnesium-zinc-based alloy and alloy ingot technology, which is applied in the metallurgical field, can solve the problems of unqualified surface quality, serious burning loss and difficult casting of the high-magnesium-zinc-based alloy, and achieves reduced magnesium loss, small investment and production efficiency. high effect

Inactive Publication Date: 2020-08-07
YUNNAN HONGCHI RESOURCE INTEGRATION UTILIZATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are several deficiencies in the production of high-magnesium zinc-based alloys by this process: (1) When magnesium is added, the magnesium will burn and the burning loss will be serious
(2) During casting, the high-magnesium-zinc-based alloy is oxidized in the chute, the surface turns black, and the temperature drops rapidly, causing the alloy liquid to solidify in the slag tank, which will cause casting difficulties
(3) The surface of the high-magnesium-zinc-based alloy is oxidized and blackened in the ingot mold, and the surface quality of the produced high-magnesium-zinc-based alloy is unqualified

Method used

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  • Method for smelting high-magnesium zinc-based alloy

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Comparison scheme
Effect test

Embodiment 1

[0035] Mix zinc flakes: aluminum ingots: magnesium ingots according to the ratio of 90:1:15. Use a pusher to push the calculated zinc flakes into a coreless power frequency induction furnace. After 5 hours at 470°C, after the zinc flakes are completely melted, add ammonium chloride to slag. Then use the pusher to push the calculated aluminum ingots into the coreless power frequency induction furnace, raise the temperature to 520 ° C, after 2 hours, the aluminum ingots are completely melted, and ammonium chloride is added to slag. Then use the pusher to add the calculated magnesium ingots into the coreless power frequency induction furnace, and add industrial solid calcium chloride to cover; in the case of industrial solid calcium chloride coverage protection, the self-stirring effect of the coreless power frequency induction furnace Melt the magnesium ingots for 1.5 hours; keep the temperature at 600°C, after smelting for 60 minutes, add ammonium chloride to slag, and then add...

Embodiment 2

[0037] Mix the zinc flakes: aluminum ingots: magnesium ingots according to the ratio of 90:6.5:9.5. Use a pusher to push the calculated zinc flakes into a coreless power frequency induction furnace. After 4 hours at 495°C, after the zinc flakes are completely melted, add ammonium chloride to slag. Then use the pusher to push the calculated aluminum ingots into the coreless power frequency induction furnace, raise the temperature to 540°C, and after 1.5 hours, the aluminum ingots are completely melted, and ammonium chloride is added to slag. Then use the pusher to add the calculated magnesium ingots into the coreless power frequency induction furnace, and then add industrial solid calcium chloride to cover; in the case of industrial solid calcium chloride coverage protection, the self-stirring of the coreless power frequency induction furnace Under the action, the magnesium ingot is completely melted for 1 hour; the temperature is kept at 575°C, after smelting for 40 minutes, a...

Embodiment 3

[0039] Mix zinc flakes: aluminum ingots: magnesium ingots according to the ratio of 90:12:4. Use a pusher to push the calculated zinc flakes into a coreless power frequency induction furnace. After 3 hours at 520°C, after the zinc flakes are completely melted, add ammonium chloride to slag. Then use the pusher to push the calculated aluminum ingots into the coreless power frequency induction furnace, raise the temperature to 560 ° C, after 1 hour, the aluminum ingots are completely melted, and ammonium chloride is added to slag. Then use the pusher to add the calculated magnesium ingots into the coreless power frequency induction furnace, and then add industrial solid calcium chloride to cover; in the case of industrial solid calcium chloride coverage protection, the self-stirring of the coreless power frequency induction furnace Under the action, the magnesium ingots are completely melted for 0.5 hours; the temperature is kept at 550°C, after smelting for 20 minutes, ammonium...

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Abstract

The invention relates to a method for smelting high-magnesium zinc-based alloy, and belongs to the technical field of metallurgy. The method comprises the following steps of adding a zinc sheet into acoreless power frequency induction furnace, melting at 470-520 DEG C for 3-5 hours, and slagging after the zinc sheet is completely melted; adding an aluminum ingot, heating the coreless power frequency induction furnace to 520-560 DEG C, smelting for 1-2 hours, and slagging after the aluminum ingot is completely molten; sequentially adding magnesium ingots and industrial solid calcium chloride,and stirring for 0.5-1.5 hours under the condition of covering protection of the industrial solid calcium chloride to completely melt the magnesium ingots; keeping the temperature at 550-600 DEG C, slagging after smelting for 20-60 minutes, and adding the industrial solid calcium chloride for covering; under the protection of inert gas on a slag tank and an alloy ingot mold, enabling alloy liquidto directly flowing into the alloy ingot mold, and slagging to complete the casting. The process is simple to operate, short in flow and easy to control, qualified high-magnesium zinc-based alloy canbe produced, and the problems of burning loss in high-magnesium smelting and blackening of the surface of a product during casting are effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a method for smelting a high-magnesium-zinc-based alloy. Background technique [0002] At present, the high-magnesium zinc-based alloys produced in China contain less than 3.5% magnesium. The existing laboratory production process uses a power-frequency induction furnace to melt zinc at 470-520°C, then add aluminum to melt, and heat up to 520-560°C to melt magnesium. , Casting directly after ammonium chloride slagging. [0003] The patent of application number 20181003150.3 "a zinc-aluminum-magnesium alloy smelting method" contains 1-1.2% magnesium, 1.4-1.6% aluminum, and 97.2-97.6% zinc. First put the aluminum ingot into a coreless induction furnace to melt at 600-680°C, add zinc at 540-560°C to melt, add magnesium to a special magnesium cover and melt at no higher than 560°C, and then cast, the casting mold is water-cooled. Due to the low magnesium content, in ...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C18/00B22D7/00C22C18/04
CPCB22D7/005C22C1/02C22C18/00C22C18/04
Inventor 魏源邓远久韩朝云丁旭余振武吴红林胡如忠陈昌将唐远昆马胜兰李月梅韩荣贵
Owner YUNNAN HONGCHI RESOURCE INTEGRATION UTILIZATION CO LTD