Titanium and titanium alloy welding process

Abstract

The invention discloses a titanium and titanium alloy welding process. In the process, firstly, the parts to be welded are fixed with clamps as required, and the top of the parts to be welded is blocked with a plug, and an argon-filled tube is installed at the other end. The interface is filled with argon through the argon cylinder and the argon filling pipeline. When the argon gas overflows from the joint of the parts to be welded, it is welded. The parts to be welded are all titanium products with a hollow center. The invention adopts external argon filling to the product, avoids vacuuming for welding, reduces energy consumption, improves production efficiency, and can also produce continuously; the equipment required by the invention is simple, and its cost is equivalent to that of conventional welding.

Description

technical field [0001] The invention relates to a welding process, in particular to a titanium and titanium alloy welding process. Background technique [0002] At present, there are mainly two methods of welding titanium and titanium alloys on the market. One is conventional welding, that is, the product is welded with an argon arc welding torch in the atmospheric state. The product is only protected by argon on the surface, and there are oxidation and Hydrogenated defects, and the weld is impenetrable, resulting in stress concentration, which is prone to fatigue and fracture during use. The other one uses a vacuum welding box to weld the product. The quality of the welding is better, but the welding cost is relatively high. The welding box must be vacuumed every time, and after welding a batch, it needs to break the vacuum and then vacuumize it. Repeated operations, the unit energy consumption is large, and the benefit is low. Contents of the invention [0003] Aiming ...

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Problems solved by technology

[0002] At present, there are mainly two methods of welding titanium and titanium alloys on the market. One is conventional welding, that is, the product is welded with an argon arc welding torch in the atmospheric state. The product is only protected by argon on the surface, and there are oxidation and Hydrogenated defects, and the weld is impenetrable, resulting in stress concentration, which is prone to fatigue and fracture during use

The other one uses a vacuum welding box to weld the product. The quality of the welding is better, but the welding cost is relatively high. The welding box must be vacuumed every time, and after welding a batch, it needs to break the vacuum and then vacuumize it. Repeated operation, the unit energy consumption is large, and the benefit is low

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