1. This welding backing .is used for one-side welding process. 2. mainly for the X-shape joint. The one-side welding backing are ceramic products widely used in one-side welding technique of Co2 semi-automatic and automatic welding. They are suitable for use as welding backing material in shipbuilding, marine construction, chemical industry and other steel structure.The application in a flexible way of one-side welding technique with the backing material allows to save a lot of back processes. Thus, the productivity is raised, cost lowered and working environment improved.The shape of one-side welding backings below:Features of One-side Welding Backing Material

1. The ceramic backing use natural inorganic materials(kaolin,talc)which are mixed in the right proportion to form a ceramic powder, shaped under pressure and baked at a high temperature of 1350~1400°c.

2. Due to having been baked at a high temperature, the blocks have excellent resistance to heat shocks in course of rapid heating or cooling. Under the high temperature of welding, they remain stable without producing mloten metal drops and in the same time a good back bead is formed.

3. Ceramic materials have the fine property of acid and alkali resistivity. Therefore, in the process of steel pieces welding, no deformation and no physical or chemical reactions occur.

Welding Backing, YC-408 (for one-side welding process,mainly for X-shape joint)