Magnetism conduct principle of trip surfacing was researched by simulating band electrode weld penetration state, analyzing the response of band electrode electric current to control magnetic field existence, the intensity, and the location conversion, and applying electronic techniques theory to analyze strip surfacing penetration control technique.

In order to improve the productivity, strip surfacing with higher welding currents and wider strips are adopted, which leaded to poor bead characteristics usually.

And presents two overlay welding processes using strip to obtain a clad material: submerged (?)are strip cladding (SAC) and electric slag strip cladding (ESC).

The paper describes strip cladding of dual phase steel,and maily tests cooling method s effect on the performance after weld.

Using a microcomputer controlled strip overlay welding equipments the weldingprocess and the method of quality controlling of the weld are investigated for the electro-slagoverlay welding(ESW)with a strip of 75 mm×0.

For the ultra - low - carbon austenitic stainless steel, using the process of strip electrode electroslag surfacing and the standardized heat treatment process of 600 MW nuclear vessels (615℃×29 h) , the mechanism of grain boundary phase eduction in weld metal is analysed deeply.

In this article, the principle of strip electrode electroslag surfacing is introduced.