Tube plate surfacing welding machine and its anti-deformation device, surfacing welding method

Abstract

The invention relates to a tube plate surfacing welding machine, an anti-deformation device and a surfacing welding method. The anti-deformation device for tube plate surfacing includes a tray, supports and multiple sets of pins; the tray includes bottom plates and side plates; the bottom plate and side plates are enclosed to form a cooling tank with an upper opening for placing cooling water; the supports are detachable Snapped into the cooling tank, it is used to support and fix the tube sheet to be surfacing; there are multiple sets of sockets on the support, and the multiple sockets of each group are distributed on the same circumference, and each socket is vertically arranged. And it penetrates the upper surface of the support member; the lower part of the tube sheet can be placed in the cooling water, so that the surfacing welding of the tube sheet is carried out in the cooling water, and the deformation during the surfacing welding process of the tube sheet is avoided. A plurality of pins can be selectively inserted into a group of sockets, and the tube plate is limited within the enclosed range of the pins, and the tube plate of different specifications and sizes can be fixed on the support plate, so as to facilitate surfacing welding of tube plates of different specifications and sizes , improve the utilization rate of the anti-deformation device.

Description

technical field [0001] The invention relates to the field of tube plate surfacing welding of pressure vessels, in particular to a tube plate surfacing welding machine, an anti-deformation device, and a surfacing welding method. Background technique [0002] With the rapid development of my country's economic construction, in boilers, pressure vessels and other industries, in order to improve the corrosion resistance of many heat exchanger products, it is required that the surface of the tube sheet in contact with corrosive media should be welded with a rust-resistant corrosion-resistant layer. Due to the large thickness of the surfacing layer during the surfacing welding of the tube plate of the heater, a large amount of heat is generated during the surfacing process, and the deformation of the tube plate is easily caused after welding, so that the tube plate does not meet the processing requirements. How to control the welding deformation to become a tube plate The biggest pr...

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Problems solved by technology

[0002] With the rapid development of my country's economic construction, in boilers, pressure vessels and other industries, in order to improve the corrosion resistance of many heat exchanger products, it is required that the surface of the tube sheet in contact with corrosive media should be welded with a rust-resistant corrosion-resistant layer. Due to the large thickness of the surfacing layer during the surfacing welding of the tube plate of the heater, a large amount of heat is generated during the surfacing process, and the deformation of the tube plate is easily caused after welding, so that the tube plate does not meet the processing requirements. How to control the welding deformation to become a tube plate The biggest problem of surfacing welding. By analyzing the causes of welding deformation during surfacing welding of tube sheets, in the past, the method of increasing rigid restraint and anti-deformation method was used to control the deformation of surfacing welding of tube sheets. However, the effect of surfacing welding Neither is ideal

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