Welding method of titanium alloy bar

Abstract

The disclosure provides a welding method for titanium alloy rods, belonging to the field of welding technology, comprising: installing two titanium alloy rods to be welded on two positioning devices respectively; installing the two positioning devices on the adjusting device ;Adjust the distance between the two positioning frames, and control the opposite butt joint of the end faces to be welded on the two titanium alloy bars to be welded to form a double-sided groove; at the same time, weld on both sides of the double-sided groove to form a bottom weld bead , so that the molten pools on both sides of the double-sided groove are fused into a molten pool; welding is formed on the bottom weld bead on both sides of the double-sided groove to form a multi-layer weld bead, and the welding of the titanium alloy bar is completed. The disclosure can ensure that the straightness of the bars after butt jointing meets the requirements, and avoid root cleaning after bottom welding, so as to ensure the welding quality.

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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