Plane and vertical face circumferential submerged arc surfacing non-standard equipment and surfacing process method

Abstract

The invention discloses plane and vertical face circumferential submerged arc surfacing non-standard equipment and a surfacing process method. A bearing seat fixed to a base is used for supporting a central column mandrel to rotate, a variable-frequency motor is fixed to the base through a motor support, power is transmitted to the central column mandrel through a speed-changing gear box and an RV speed reducer, the variable-frequency motor covers the cross beam circumferential rotation linear speeds at different welding speeds, a welding equipment power source is led to a collecting ring electric brush through a drag chain wire groove and a wire harness, the equipment is fixed to a platform in the middle of a water guide component to be subjected to surfacing welding, the circle center and the levelness are adjusted according to the rough machining face of the water guide component, a supporting wheel is arranged at the far end of a cross beam, the cross beam and the welding equipment are driven to rotate circumferentially by the power of the supporting wheel, and the submerged-arc welding equipment is connected to the far end of the cross beam through a welding equipment fixing hanging arm, so that mechanical connection and electric connection between the submerged-arc welding equipment and the welding equipment are achieved, and the welding equipment is driven to rotate in the circumferential direction. Then plane and vertical face wear-resistant corrosion-resistant stainless steel submerged arc automatic surfacing welding circumferential continuous welding of the water guide component is achieved.

Description

technical field [0001] The invention relates to the field of automatic surfacing welding, in particular to a non-standard equipment and a surfacing welding process for plane and elevation circumferential submerged arc surfacing welding. Background technique [0002] In order to obtain excellent wear resistance and corrosion resistance, the metal surface of the water guide parts such as the top cover and the bottom ring of the pumped storage unit that cooperates with the runner and the metal surface that contacts the end of the guide vane often uses stainless steel surfacing welding technology, using traditional manual GMAW The surfacing welding method of MIG shielded welding has poor quality and low efficiency. [0003] The disadvantages of surfacing stainless steel by manual GMAW gas metal shielded welding method are: [0004] 1) Due to problems such as inter-pass cleaning, gas protection effect and manual operation, the internal defects of the surfacing layer are more exp...

AI Technical Summary

Problems solved by technology

[0004] 1) Due to problems such as inter-pass cleaning, gas protection effect and manual operation, the internal defects of the surfacing layer are more exposed during the subsequent processing, mainly manifested as pores, inter-pass inclusions, incomplete penetration, transverse cracks and other defects, and the repair process is easy Repeated, affecting just-in-time production of components

[0005] 2) The fusion ratio between the base layer and the base metal is too large, and the chemical composition and metallographic structure of the heat-affected zone interface are complex, which is prone to welding hot crack defects

[0006] 3) The defect repair of the exposed surfacing layer after the finishing of the component will affect the processing size of the component, which has a greater quality risk

[0007] 4) For the welding structure with a large amount of surfacing welding, the efficiency of manual surfacing welding is low, and it is waiting for the application of automatic surfacing welding equipment and surfacing welding process methods with higher efficiency

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