Titanium alloy welding method

A welding method and titanium alloy technology are applied in the field of titanium alloy welding to achieve the effects of reducing slag inclusion, improving stability and reducing weld porosity

Pending Publication Date: 2022-05-27
CHINA NAT CHEM ENG NO 16 CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, problems such as slag inclusions and porosity still exist in the existing titanium alloy welding methods, and it is urgent to develop new welding methods that reduce slag inclusions and porosity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0018] Titanium alloy welding method,

[0019] A: Preparation before welding: clean the titanium alloy welding part; first use a stainless steel wire brush to mechanically clean the left and right sides of the welding site by 25mm, and after the mechanical cleaning is completed, then clean the surface of the welding part with acetone to completely remove the moisture, burrs, paint film, residual dirt and other impurities that may react with the titanium alloy;

[0020] Preparation of solder coatings, the raw material mixture of solder skins is divided into mgF by the number of constituent components 2 3 to 6 parts, NaF 2 to 7 parts, Cr 2 O 3 35 to 55 servings, TiO 2 8 to 15 servings, CrCl 3 5 to 11 servings, Ta 2 O 5 8 to 12 parts, the raw material mixture is ground to a particle size of 40 ~ 100μm, and then added to the raw material mixture organic solvent;

[0021] The welding agent skin is coated in two times at the titanium alloy welding site, the thickness of the welding agen...

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Abstract

The invention relates to a titanium alloy welding method. The titanium alloy welding method comprises the steps of preparation before welding, cleaning of a welding part, configuration of a welding coating, brushing of the welding coating, pre-welding, welding and post-welding treatment. According to the titanium alloy obtained through the welding method, slag inclusion of welding is reduced, the porosity of a welding seam is reduced, and the stability of a welding part is improved.

Description

Technical field [0001] The present invention belongs to the field of welding process technology, specifically relates to a titanium alloy welding method. Background [0002] Titanium alloys have been widely used in chemical, petroleum, petrochemical, vacuum salt, pharmaceutical, seawater desalination, electric power and other industries. It is an excellent structural material, with small density, high strength, high and low temperature performance and other characteristics, especially titanium alloy can better resist the erosion of chloride ions, so titanium alloy is widely used in chlorine-related media, such as the production of ion membrane caustic soda has been a large number of titanium alloy manufacturing equipment, pipes and pipe fittings. There are also formic acid, acetic acid, propylene oxide and other chemical projects are the use of titanium alloy pipeline transport medium to solve the problem of pipeline corrosion and extend the service life of the pipeline. [0003]...

Claims

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Application Information

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IPC IPC(8): B23K9/167B23K9/235B23K9/32
CPCB23K9/167B23K9/235B23K9/32
Inventor 蔡鑫
Owner CHINA NAT CHEM ENG NO 16 CONSTR
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