Steel bar fusion channel wall rod welding method

Abstract

The invention discloses a steel bar fusion channel wall rod welding method. The method comprises the following steps: (1) preparation before welding, namely paring two segments of steel bars which are to be welded, and horizontally and correspondingly arranging the ends of the steel bars; (2) performing positioned welding, namely performing gas metal arc welding by adopting a flux-cored wire which is capable of generating titanium-calcium type slag after being fused; performing spot welding for location at an angle steel base plate and the two sides of the to-be-welded steel bar by electric arc; (3) welding a steel bar end butting welding pass and an angle steel base plate reinforcing welding pass. By adopting a flux-cored wire CO2 semi-automatic gas shielded welding method, the method disclosed by the invention is capable of solving the problem that defects of air holes are easy to cause when the steel bar is welded by adopting solid-cored wire CO2 semi-automatic gas shielded welding, and the one-time percent of pass of a site-welded welding line can be doubled.

Description

technical field [0001] The invention relates to a welding method for side bar welding of a steel bar melting tank, which belongs to the field of welding technology. Background technique [0002] At present, in the existing steel bar welding in our country, the welding method of electrode arc welding is mainly used for connection. In recent years, a small amount of solid core welding wire CO has also appeared. 2 Gas metal arc welding welding method. The use of arc welding welding method for steel bar welding has the disadvantages of low production efficiency and unstable welding quality due to the characteristics of the welding method itself. And solid wire CO 2 Gas metal arc welding itself is a low-hydrogen welding method. Before welding, the steel surface is required to be clean and free of dirt. However, there are rust and other dirt on the surface of the actual steel bar welding, so defects such as pores and slag inclusions inevitably exist after the steel bar is welded...

AI Technical Summary

Problems solved by technology

Welding of steel bar by using electrode arc welding welding method, due to the characteristics of this welding method, it has the disadvantages of low production efficiency and unstable welding quality

And solid wire CO 2 Gas metal arc welding itself is a low-hydrogen welding method. Before welding, the steel surface is required to be clean and free of dirt. However, there are rust and other dirt on the surface of the actual steel bar welding, so defects such as pores and slag inclusions inevitably exist after the steel bar is welded. , affecting welding quality

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