Variable-diameter industrial pure titanium pipeline pickling process

An industrial pure titanium and pipeline technology, applied in the field of pickling process, can solve the problems of pipeline welding oxidation and welding excess, and achieve the effect of reducing hydrogen content, eliminating pipeline oxidation problems, and reducing the risk of hydrogen embrittlement

Inactive Publication Date: 2021-03-26
SHENYANG AEROSPACE XINGUANG GRP
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] The invention provides a variable-diameter industrial pure titanium pipeline pickling process, which solves the problems of internal welding oxidation and welding surplus, and at the same time requires to ensure that the hydrogen content of the pipeline after pickling meets the requirements

Method used

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Embodiment Construction

[0026] The invention is now further described. The purpose of the invention is to solve the problems of internal oxidation and welding residues in the pipeline after welding, and at the same time solve the problem of replacement of the pickling bath solution in the complex variable-diameter pipeline, ensure the pickling effect, and eliminate the pickling effect. To eliminate the risk of hydrogen embrittlement, a pickling process for variable diameter industrial pure titanium pipelines is provided. In order to improve the pickling effect of variable-diameter industrial pure titanium pipelines, the bath replacement operation is added during the degreasing and pickling process, and the pickling formula is optimized. After this treatment, the degreasing and pickling effects inside the pipeline can be guaranteed. Guarantee product quality.

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Abstract

The invention discloses a variable-diameter industrial pure titanium pipeline pickling process. The problems of internal welding oxidation, excessive welding and the like of a pipeline can be solved through accurate control over a pickling bath solution formula, replacement and flow of a bath solution in the pipeline and adoption of dehydrogenation measures; and after pickling, endoscopic examination, sectioning examination, and surface appearance and hydrogen content detection meet standards and design requirements, and the pickling effect of the pipeline is guaranteed.

Description

technical field [0001] The invention relates to the technical field of pickling technology, in particular to a pickling process for variable-diameter industrial pure titanium pipelines. Background technique [0002] Titanium is a new type of non-ferrous metal with a series of advantages, such as low density, good corrosion resistance, high specific strength, non-toxicity, etc., so it is widely used in navigation, aviation, petrochemical, medical, metallurgy, shipbuilding and other fields. Known as "ocean metal", "space metal" and "modern metal". In the field of aerospace and aviation, industrial pure titanium is a very important metal material. Generally, industrial pure titanium is used to make transportation pipelines and heat exchange equipment for the transportation of gas and liquid fuels. The pipelines are usually irregular in shape. In the case of shape correction, etc., it is necessary to cut off the pipeline and add tees, etc. After the parts are finished, the ben...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G3/04C23G1/10C23G1/20B08B3/02
CPCC23G3/04C23G1/106C23G1/205B08B3/02
Inventor 王建张建张国全殷小东
Owner SHENYANG AEROSPACE XINGUANG GRP
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