Experimental device of simulating ultrasonic-assisted wet process welding and application method thereof

Abstract

The invention relates to an experimental device of simulating ultrasonic-assisted wet process welding and an application method thereof and solves the technical problems of relatively more pores of weld joints, more welding defects, unaesthetic weld joints and poor mechanical property of welding metal in the prior art. The invention provides the experimental device of simulating ultrasonic-assisted wet process welding. The experimental device of simulating ultrasonic-assisted wet process welding comprises a pressure cabin, a gas supply system and a power supply system. A first gas inlet pipe,a second gas inlet pipe and a pressure release valve are separately arranged on the pressure cabin wall in a penetrating manner; a fixed bracket and a walking mechanism are fixedly connected in the pressure cabin, a water tank is arranged on the surface of the walking mechanism, and the moving direction of the walking mechanism is vertical to the axial direction of a welding gun; an ultrasonic device and a welding device, the lower ends of which are placed in the water tank, are arranged in the pressure cabin; the ultrasonic device comprises an ultrasonic transducer and an ultrasonic amplitudetransformer fixedly connected up and down, the ultrasonic waves output by the ultrasonic transducer are longitudinal waves, and the vibrating direction of the ultrasonic amplitude transformer is an axial direction. The device is widely applied to the technical field of underwater welding.

Description

Technical field [0001] The invention relates to the technical field of underwater welding, in particular to a simulated ultrasonic assisted wet welding experimental device and a use method thereof. Background technique [0002] With the vigorous development of my country's ocean development, underwater welding has been widely used in the construction and maintenance of marine structures, the laying of submarine oil pipelines, and the emergency repair of ships. Among them, wet welding is more suitable for welding on the seabed continental shelf of 100-200 meters that is difficult for divers to dive due to its high degree of automation. However, the deep water and high pressure environment will cause a series of undesirable effects on the welding process, which are directly reflected in the unsightly formation of the weld seam and many welding defects. Among them, welding porosity is one of the main defects. This is because in a high-pressure environment, the gas generated in the...

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Problems solved by technology

This defect will seriously affect the mechanical properties of the weld metal and is the main cause of failure

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