Abrasive wear is very common to in cement machinery and components, and finally cause scrap due to the severe working environment with high temperature and dust. But the replacement of equipment or new components will increase production costs, so the hardfacing welding technology and wear resistant materials, especially chromium carbide overlay plate are widely used in cement enterprise.

Today, open arc self-protection automatic welding technology has been successfully applied to repair the vertical roller, extrusion roller, crusher hammer in cement industry.

Metal hardfacing materials also known as surfacing alloy, and can be divided into iron-base, nickel-base, cobalt-base, tungsten carbide etc, iron-base welding alloy is widely used and has two types, alloy steel and alloy cast iron. Wherein, alloy steel including low carbon alloy steel, medium carbon low alloy steel, high carbon low alloy steel, high chromium martensitic alloy steel, high manganese austenitic alloy steel, alloy cast iron consists of martensite and the high chromium alloy cast iron.

There are many different welding materials, and their chemical composition, microstructure and properties may vary greatly, also wear parts have different shapes, and working conditions, so only the reasonable selection of surfacing welding consumables and achieve good effect welding performance.