Non-ferrous metal gas full-protection welding workshop and operation method thereof

Abstract

The invention discloses a non-ferrous metal gas full-protection welding workshop and an operation method thereof, and relates to the field of non-ferrous metal welding. The non-ferrous metal gas full-protection welding workshop comprises a personnel transition cabin, a working workshop, a life support system, a gas supply system, a vacuum system and a circulating gas washing system. The personneltransition cabin is connected with the working workshop, work personnel enters the working workshop through the personnel transition cabin to carry out welding work, a welded workpiece enters the working workshop for welding, the life support system is respectively connected with the personnel transition cabin and the working workshop and provides breathing gas for the work personnel, the gas supply system is respectively connected with the personnel transition cabin and the working workshop and provides protective gas for welding, the vacuum system is connected with the working workshop and is used for vacuumizing the interior of the working workshop, and the circulating gas washing system is connected with the working workshop and is used for absorbing impurity gas in the working workshop in the welding process. According to the non-ferrous metal gas full-protection welding workshop, work personnel enter the working workshop filled with protective gas to carry out welding operation,and the welding quality can be improved through close-range fine operation.

Description

Technical field [0001] The invention relates to the field of non-ferrous metal welding, in particular to a non-ferrous metal gas full shielded welding workshop and an operation method thereof. Background technique [0002] Non-ferrous metals such as titanium alloys are widely used in the shipbuilding industry, aerospace and other fields. Due to the active chemical properties of many non-ferrous metal alloys, it is easy to chemically react with oxygen and nitrogen in the air during high-temperature welding, which affects the welding quality. For example, titanium alloy has strong hydrogen absorption, oxygen absorption, and nitrogen absorption characteristics at high temperatures. If protective measures are not taken during the welding process, the weld and heat-affected zone will appear blue, which will deteriorate the metallurgical quality of the weld and cause the weld Wrinkles and poor appearance. Therefore, various gas protection measures must be taken during the non-ferrous...

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Problems solved by technology

[0004] 1) Use welding torch shielding gas nozzle: Gradl et al. (2009) from Marshall Space Center of NASA, Tao Wang et al. Influenced by environmental conditions, the requirements for operators are also high. When the airflow parameters and environmental conditions change, turbulent flow will occur, which will affect the protective effect of titanium alloy welding gas;

[0005] 2) Use protection tools such as protective covers: Zhang Yi et al. (2013) of Hunan University, and Liao Zhiqian et al. (2007) of CSIC 725 Institute all used local protective molds such as drag covers for titanium alloy welding protection, and the effect of partial gas protection was limited Influenced by multiple factors such as gas flow rate, protection device structure, welding workpiece shape and personnel operation method, the protection effect is unreliable; for different shapes of welded workpieces, it is necessary to make corresponding protection molds, and conduct multiple tests to verify the welding effect, not only Consumption of processing man-hours, but also to bear a higher cost of mold protection

However, this type of protective box generally has a small space and is only suitable for gas protection of small welded parts, and it is difficult to accommodate large welded workpieces such as hulls, aircrafts, and submersibles.

In addition, the operators of this type of protective box can only perform welding operations outside the box, and the viewing angle and operating space are limited, making it difficult to ensure good welding quality

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