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Degassing agent, preparation method and application of degassing agent and application method of degassing agent

An application method and technology of degassing agent, applied in the field of material engineering, can solve the problems of polluted alloy and high production cost, and achieve the effects of improving comprehensive performance, reducing production cost and reducing frequency.

Inactive Publication Date: 2019-07-16
ZHUHAI GUOHE RONGCHUANG SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a method for preparing a degassing agent, which aims to solve the high production cost of degassing by vacuum smelting alloys in a vacuum furnace for many times, and the direct use of magnesium element as a degassing agent will introduce magnesium element Contaminate the alloy in the alloy melt, so it cannot be used directly as a degasser

Method used

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Examples

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preparation example Construction

[0014] The preparation method of the degassing agent provided by the embodiment of the present invention uses nickel as the substrate of the degassing agent, and adds copper, magnesium and rare earth metal element cerium with higher activity, and the magnesium and cerium in the degassing agent can be combined with The oxygen and nitrogen in the nickel-magnesium alloy melt are fully combined to achieve the purpose of degassing. Adding it to the alloy melt during the refining stage of high-temperature alloys, corrosion-resistant alloys and functional alloys can significantly reduce the content of oxygen and nitrogen in the alloy to 6ppm In the following, the overall performance of the smelted alloy is significantly improved, the number of vacuum smelting can be reduced, the production cost of alloy smelting is significantly reduced, and the nickel-based alloy will not be polluted.

[0015] The embodiment of the present invention provides a kind of preparation method of degassing ...

Embodiment 1

[0034] Put the weight percentage: 50% Ni, 25% Cu, 5% Ce and 20% Mg in the power frequency induction furnace, and treat the above four metals in sequence according to magnesium and cerium (placed in the bottom layer), copper (middle layer) and nickel (uppermost layer) are placed, and then pour large grains of industrial salt (the main ingredient is the same as table salt, both are NaCl) on the four metals to completely cover the metal with a thickness of 30cm. Then turn on the power supply to heat, so that the temperature of the molten metal rises to 1600 ° C, and keep it warm for about 30 minutes, then turn off the power and cool down to room temperature with the furnace, and finally remove the covered salt to get the nickel-copper-magnesium-cerium alloy, that is, the degasser .

Embodiment 2

[0036] Put the weight percentage: 50.5% Ni, 22% Cu, 3.5% Ce and 25% Mg in the power frequency induction furnace, and treat the above four metals in sequence according to magnesium and cerium (placed in the bottom layer), copper (middle layer) and nickel (uppermost layer) are placed, and then pour large grains of industrial salt (the main ingredient is the same as table salt, both are NaCl) on the four metals to completely cover the metal with a thickness of 20cm. Then turn on the power supply to heat up, so that the temperature of the molten metal rises to 1500 ° C, and keep it warm for about 20 minutes, then turn off the power and cool down to room temperature with the furnace, and finally remove the covered salt to get the nickel-copper-magnesium-cerium alloy, that is, the degasser .

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Abstract

The invention belongs to the technical field of material engineering and provides a degassing agent, a preparation method and application of the degassing agent and an application method of the degassing agent. The preparation method of the degassing agent comprises the steps that the raw materials comprising, by weight, 45-53% of nickel, 22-33% of copper, 3-10% of cerium and 20-30% of magnesium are fetched according to weight for use; the magnesium, cerium, copper and nickel are placed in a power frequency induction furnace, and the uppermost metal surface layer is covered by industrial saltat the thickness of 20-35 cm; the temperature of the power frequency induction furnace is raised to 1500-1650 DEG C, the temperature is kept for 20-35 min, then the temperature is lowered to indoor temperature, the industrial salt covering the metal surface is removed, and then the degassing agent is obtained. According to the degassing agent prepared by the adoption of the preparation method, themagnesium and the cerium can be fully combined with oxygen and nitrogen in a molten nickel-magnesium alloy to achieve the purpose of degassing, the content of oxygen and nitrogen in the alloy to be remarkably lowered to below 10ppm, the number of times of vacuum smelting can be reduced, the production cost of alloy smelting is significantly reduced, and the nickel-based alloy is not contaminated.

Description

technical field [0001] The invention belongs to the technical field of material engineering, and in particular relates to a degassing agent and its preparation method, application and application method. Background technique [0002] High-temperature alloys, corrosion-resistant alloys and other alloys with special functions are generally prepared by vacuum melting and vacuum self-consumption or electroslag remelting. The reason is to greatly reduce the gas content in the alloy (such as oxygen, hydrogen and nitrogen and other elements ), because these gas elements will accumulate at the grain boundaries, resulting in poor high-temperature creep performance, corrosion resistance and mechanical properties of the alloy. Therefore, high-temperature alloys, corrosion-resistant alloys, and other functional alloys have extremely strict control over oxygen, hydrogen, and nitrogen, and the content is controlled below dozens of ppm, and the smaller the better. [0003] In the process ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C19/03C22C1/02C22C30/02
CPCC22C1/023C22C1/06C22C19/03C22C30/02
Inventor 王雨李清涼袁兵李党国
Owner ZHUHAI GUOHE RONGCHUANG SCI & TECH CO LTD
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