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Giant-pen-shaped oxygen lance

A giant oxygen lance and oxygen tube technology, which is applied in the manufacture of converters and other directions, can solve the problems of the oxygen lance being difficult to remove slag, low in use efficiency, and not wear-resistant, so as to achieve low maintenance and maintenance costs, high use efficiency, and installation. simple effect

Inactive Publication Date: 2014-12-24
姜利祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention mainly aims at the above problems, and provides a method that solves the problems that the oxygen lance is not easy to remove slag, is not wear-resistant, is difficult to replace, and has low service efficiency.

Method used

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  • Giant-pen-shaped oxygen lance

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Embodiment Construction

[0011] Below in conjunction with accompanying drawing and example the present invention will be further described:

[0012] Such as figure 1 As shown, a giant pen oxygen lance is characterized in that it includes: an outer tube straight section 1, an oxygen tube 2, a water tube 3 and an outer tube composite cone section 4, and the outer tube is composed of an outer tube straight section 1 and an outer tube Cone section 4, the straight section of the outer tube and the composite cone section of the outer tube are seamlessly connected and integrally formed, the straight section of the outer tube is forged from a thick-walled seamless tube, the composite cone section of the outer tube is made of composite materials, and the inner side is made of steel Forged seamless pipe, the outer surface is an alloy layer, the water pipe 3 and the oxygen pipe 2 are fixed in the cavity formed by the straight section of the outer pipe 1 and the composite cone section of the outer pipe 4, and the...

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Abstract

The invention relates to a giant-pen-shaped oxygen lance. The giant-pen-shaped oxygen lance comprises an outer tube, an oxygen tube and a water tube, wherein the outer tube comprises a straight outer tube section and a composite tapered outer tube section; the straight outer tube section and the composite tapered outer tube section are seamlessly butted to be integrally molded into the outer tube; the straight outer tube section is formed by forging a thick-wall seamless tube; the composite tapered outer tube section is made of a composite material; a steel forged seamless tube is arranged on the inner side of the composite tapered section, and an alloy layer is arranged on the outer surface of the composite tapered section; the water tube and the oxygen tube are fixedly connected to a cavity formed by the straight outer tube section and the composite tapered outer tube section; the alloy layer is formed by processes such as welding, thermal spraying and laser melt coating; an alloy material coats the surface of the seamless tube to form the alloy layer in a melting mode. The problems that the oxygen lance is not prone to slag removal, is not abrasion-resistant and is low in using efficiency are solved. The alloy layer is high-temperature-resistant, and the abrasion resistance and the fatigue resistance of the oxygen lance are greatly improved. Even if steel slag is sprayed to the outer surface of the oxygen lance, the oxygen lance cannot be damaged. The steel slag can naturally drop. The giant-pen-shaped oxygen lance has the advantages of simplicity in mounting and easiness in maintenance and replacement, and is low in maintenance cost and high in using efficiency.

Description

technical field [0001] The invention relates to an oxygen lance for converter steelmaking, especially the outer tube of the oxygen lance adopts a pen-shaped structure Background technique [0002] At present, the outer tubes of the oxygen lances we use are all made of a single material, basically made of 20# steel seamless tubes, which are not wear-resistant, easy to oxidize, and difficult to remove slag. Contents of the invention [0003] The present invention mainly aims at the above problems and provides a method that solves the problems that the oxygen lance is not easy to remove slag, is not wear-resistant, is difficult to replace, and has low service efficiency. The outer tube of the oxygen lance adopts a giant pencil-shaped structure, which is composed of a straight tube section and a tapered tube section. The material of the vertebral tube section is composite material, and the outer surface is a composite alloy layer. Abrasion resistance and fatigue strength. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/46
Inventor 姜利祥
Owner 姜利祥
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