Roller press technology has long roller surface wear, surface wear of the roller press roller technology research, and China has done a lot of work. Of these, the whole casting style, the overall surfacing style, inlayed surfacing type, carbide column peg, block type, and type, and so is to sinter the research results in different periods. The whole cast and the overall surfacing are early technology, has little use; carbide and carbide column nail sintering, because of his foreign body materials in construction cost over-sensitive or too expensive, and difficult to promote the use of; sub-block then there exists a reasonable roll surface Shouli Bu this fatal flaw, Roll forming machine which in 1996 after the Jibei negative. From the wear on the adaptability of working conditions and the use, maintenance, replacement of convenience and many other factors to consider, is currently considered the best type surfacing inlay sets. Surfacing inlayed roller surface to achieve a roller and roller surface wear layer of maternal separation, you can use different materials and heat treatment process to meet the roller axis of overall mechanical properties and performance of the roll surface wear resistant surfacing needs. The key technology is the rational design of roll surface wear-resistant materials and forms, and the roll surface patterns of local and overall site restoration. Roller press roll surface for the high stress abrasive wear, the wear depends on a material surface hardness and toughness. HFCG roller press with chromium - molybdenum - vanadium alloy new class of wear-resistant welding material, welding method using flux-cored wire submerged arc welding process. According to the hardness of the heap coal seam thickness gradient required by different wear different, can be adjusted to chromium - molybdenum - vanadium ratio was different hardness and toughness Roll formingof welding materials and welding by welding pre-and post-processing, so roll surface abrasion will not happen in a large area of spalling. Production of roll surface wear must also possess the necessary crushing pressure and relative sliding of two elements. Pressure determined by the material properties, usually difficult to change. The patterns form by the roll surface to reduce the material in the extrusion process and the relative sliding roller surface, more easier. Early use of domestic chevron pattern although the circumferential direction can prevent the slide material, but not restricted to the material in the extrusion process in the axial sliding, especially the smaller particles in the extruded material, the wear is even more serious. By contrast, HFCG diamond pattern roller press used by the middle of the hard particles and the roll surface, wear resistance is forming machine much better.