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Surface treatment method for titanium sponge reactor

A technology of surface treatment and sponge titanium, which is applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., can solve the problem of incomplete and uniform titanium infiltration layer

Inactive Publication Date: 2013-03-06
PANZHIHUA IRON AND STEEL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the defect that the titanium infiltration layer obtained by the surface treatment method of the existing sponge titanium reactor is not complete and uniform, and to provide a method that can further reduce the material content of the reactor in the sponge titanium when it is used to prepare sponge titanium Surface treatment method of sponge titanium reactor

Method used

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  • Surface treatment method for titanium sponge reactor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The tank body (brand 1Cr18Ni9Ti, vertical type, inner diameter 0.18m, inner surface area 2.12m 2 , made of stainless steel), the inner wall is pickled, washed and dried, and connected to the cover used for the titanium sponge reactor through a flange. The cover is provided with two electrodes, and a titanium wire (the titanium content is greater than 98% by weight, with a total weight of 2000g and a diameter of 5mm) is connected between the two electrodes. The inner surface of the tank body is uniformly distributed, and the distance between the inner surface of the tank body of the sponge titanium reactor and the nearest point of the titanium wire is 0.9 cm. A gas inlet and a gas outlet are also arranged on the cover of the reactor.

[0061] Through the gas outlet, use a vacuum pump to reduce the pressure in the tank of the sponge titanium reactor to below 1Pa and stabilize it to 0.5Pa. Then under 0.5Pa, energize the titanium wire (the initial voltage is 15V, and the ...

Embodiment 2

[0064] The tank body (brand 1Cr18Ni9Ti, vertical type, inner diameter 0.18m, inner surface area 2.12m 2 , made of stainless steel), the inner wall is pickled, washed and dried, and connected to the cover used for the titanium sponge reactor through a flange. Two electrodes are arranged on the cover, and titanium wire (the titanium content is greater than 98% by weight, with a total weight of 2000g and a diameter of 5mm) is connected between the two electrodes. The inner surface of the tank body is uniformly distributed, and the distance between the inner surface of the tank body of the sponge titanium reactor and the nearest point of the titanium wire is 0.3 cm. A gas inlet and a gas outlet are also arranged on the cover of the reactor.

[0065]Through the gas outlet, use a vacuum pump to reduce the pressure in the tank of the titanium sponge reactor to below 1Pa and stabilize it to 0.7Pa. Then under 0.7Pa, energize the titanium wire (the initial voltage is 15V, and the init...

Embodiment 3

[0068] The tank body (brand 1Cr18Ni9Ti, vertical type, inner diameter 0.18m, inner surface area 2.12m 2 , made of stainless steel), the inner wall is pickled, washed and dried, and connected to the cover used for the titanium sponge reactor through a flange. The cover is provided with two electrodes, and a titanium wire (the titanium content is greater than 98% by weight, with a total weight of 2000g and a diameter of 5mm) is connected between the two electrodes. The inner surface of the tank body is uniformly distributed, and the distance between the inner surface of the tank body of the sponge titanium reactor and the nearest point of the titanium wire is 1.5 cm. A gas inlet and a gas outlet are also arranged on the cover of the reactor.

[0069] Through the gas outlet, use a vacuum pump to reduce the pressure in the tank of the sponge titanium reactor to below 1Pa and stabilize it to 0.2Pa. Then under 0.2Pa, energize the titanium wire (the initial voltage is 15V, and the ...

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Abstract

The invention provides a surface treatment method for a titanium sponge reactor. The method includes that an electrothermal material containing metal titanium disposed in the titanium sponge reactor is electrified under the condition that the pressure in the titanium sponge reactor is lower than 1Pa, and titanium in the electrothermal material containing the metal titanium is sublimated under the condition of electrification to form a titanized layer on an inner surface of the titanium sponge reactor. The titanized layer of the titanium sponge reactor obtained after being treated by the method covers on the inner surface of the reactor completely and uniformly, so that the content of reactor impurities in titanium sponge is further lowered when the reactor is used for preparing titanium sponge.

Description

technical field [0001] The invention relates to the field of nonferrous metal smelting, in particular to a surface treatment method for a titanium sponge reactor. Background technique [0002] Due to its excellent properties such as high temperature resistance, low temperature resistance, strong acid resistance, strong alkali resistance, high strength and low density, titanium metal has a wide range of applications in various aspects, including aerospace (jet engines, missiles and spacecraft), military, chemical ( Chemicals and petroleum products, seawater desalination and papermaking), automobiles, agricultural products, medicine (prosthetics, orthopedic implants and dental instruments and fillings), sporting goods, jewelry and mobile phones, etc. [0003] The smelting of titanium metal mainly includes the preparation steps of "sponge titanium" (a gas-permeable titanium metal form) and the step of melting the sponge titanium to form titanium metal ingots. Specifically, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C10/08C22B34/12
Inventor 李开华夏建辉杨仰军姜方新程晓哲
Owner PANZHIHUA IRON AND STEEL
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