| 摘要 |
A movable carrier 10 bearing an arc welding torch 14, for welding steel plate, and a trailing applicator 21 from which a fusible or thermoset polymer 22 is applied to the weld 20, the residual heat from the weld 20 being sufficient to melt and/or thermoset the polymer 22 to form a coating 32. Means, such as a worm drive 28, adjust the distance between the welding torch 14 and the applicator 21. The polymer 22 may be in the form of a powder, a tape or a solid block. In the case of a block of polymer the applicator may comprise means, such as compressed gas, to urge the block against the weld. The block may be shaped to match the weld joint and/or preheated. Two different polymer coating may be applied, the lower one having better adhesion to the steel and the upper one having better corrosion barrier properties. |
