A method for processing zirconium alloys recovered by smelting and recycling electron beam cooling hearth furnace

An electron beam cooling bed furnace and processing method technology, applied in the field of titanium alloys, can solve the problems of difficult control of zirconium smelting process parameters, and achieve the effects of short recovery and remelting process, good surface quality and high efficiency

Active Publication Date: 2019-12-24
QINGHAI JUNENG TITANIUM IND CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complexity of EB furnace equipment and process and the difficulty in controlling the process parameters of zirconium smelting, there are few reports and materials on electron beam smelting zirconium metal in China.

Method used

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  • A method for processing zirconium alloys recovered by smelting and recycling electron beam cooling hearth furnace
  • A method for processing zirconium alloys recovered by smelting and recycling electron beam cooling hearth furnace
  • A method for processing zirconium alloys recovered by smelting and recycling electron beam cooling hearth furnace

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Embodiment Construction

[0030] In order to explain the overall concept of the present application more clearly, the following detailed description will be given by way of examples in combination with the accompanying drawings.

[0031] The difficulty of smelting zirconium metal is that zirconium metal has a high melting point of 1855°C and has high chemical properties. Zirconium can strongly absorb nitrogen, hydrogen, oxygen and other gases. When the temperature exceeds 900 degrees Celsius, zirconium can absorb nitrogen violently; under the condition of 2000 degrees Celsius, 100 grams of metal zirconium can absorb 817 liters of hydrogen, equivalent to more than 800,000 times that of iron. This characteristic of zirconium has caused great trouble to the smelting process.

[0032] Key details of casting control of zirconium metal in EB furnace include:

[0033] (1) Reasonable ingredients and placement are the prerequisites for successful casting;

[0034] (2) Ensuring a good vacuum environment throug...

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Abstract

The invention discloses an electronic beam cold bed furnace smelting recovered zirconium alloy machining method. The method comprises the following steps: pretreatment: pollutants on the outer surfaces of zirconium wastes are removed; distribution: oxygen content data of the zirconium wastes is measured, and the zirconium wastes are arranged to enable the oxygen contents of ingots to be uniformlydistributed; and electronic beam cold bed furnace smelting: an electronic beam cold bed furnace comprises a melting area, a refining area and a crystallizing area adjacently arranged in sequence; andthe electronic beam cold bed furnace is provided with at least one first electronic gun in the melting area, at least one second electronic gun in the refining area and at least one third electronic gun in the crystallizing area.

Description

technical field [0001] The present application relates to the field of titanium alloys, in particular to a processing method for smelting TC4 alloys in an electron beam cooling hearth furnace and a processing method for medium-thick slabs. Background technique [0002] From the perspective of the shape of zirconium application materials, it can be divided into pipes and plates. Among them, zirconium tubes and rods account for 75%-80% of the zirconium materials used in nuclear power, and the demand for nuclear zirconium plates / strips accounts for 20%-25%. At present, several larger zirconium tube factories in the world, American Huachang and Westinghouse, French zirconium tube factory, Canadian zirconium tube factory, and German zirconium tube factory are all in full production. Asia is the region with the fastest growing demand for zirconium materials. At present, Japan can produce 50 tons of pipes per year; in addition, the 140×104m / a large-scale zirconium pipe factory of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B9/22C22B34/14
CPCC22B9/228C22B34/14Y02P10/20
Inventor 王龙赵统福张文青曹寿林李东
Owner QINGHAI JUNENG TITANIUM IND CO LTD
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