Titanium alloy bar welding method

Abstract

The invention provides a titanium alloy bar welding method, and belongs to the technical field of welding. The titanium alloy bar welding method comprises the following steps that two to-be-welded titanium alloy bars are correspondingly arranged on positioning devices; the two positioning devices are mounted on the two positioning devices; the distance between two positioning frames is adjusted, the to-be-welded end faces of the two to-be-welded titanium alloy bars are controlled to be in butt joint oppositely, and a double groove is formed; meanwhile, backing runs are formed on the two sidesof the double groove through welding, so that molten pools located on the two sides of the double groove are molten into one molten pool; and multiple layers of welding runs are formed on the backingruns on the two sides of the double groove in a welding mode, and welding of the titanium alloy bars are completed. According to the titanium alloy bar welding method, the straightness of the butted bars can meet the requirement, and back chipping treatment is avoided after backing weld, so that the welding quality is ensured.

Description

technical field [0001] The present disclosure relates to the field of welding technology, in particular to a welding method for titanium alloy rods. Background technique [0002] Titanium alloy bars are usually welded by butt welding. Butt welding means that two bars are respectively placed between two clamping devices, and the end faces to be welded on the two bars are controlled to be relatively butted together, and the two bars are connected together. The method of welding by electric heating at the butt contact of the material. Usually the welding groove of titanium alloy rod adopts the form of double-sided groove. In the related art, it is required to carry out radiographic flaw detection after the welding of the titanium alloy bar, so as to ensure that the quality of the welded titanium alloy bar meets the requirements. [0003] In order to improve the welding quality of titanium alloy rods, usually after backing welding is performed on one side of the double-sided g...

AI Technical Summary

Problems solved by technology

However, according to the root cleaning treatment specifications for titanium alloy rods, when grinding with grinding wheels, the particles of the grinding wheel will adhere to the groove surface, which needs to be treated separately, which will affect the production efficiency and make it difficult to guarantee the welding quality

Moreover, when welding titanium alloy rods, if the straightness of the two rods after butt joint does not meet the requirements, it will also lead to defects such as cracks, incomplete penetration and insufficient fusion after welding, resulting in failure to meet the quality requirements of radiographic flaw detection.

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