Pin rail coal mine belonging to face conveyor components critical functions is to be manufactured by a process separate pin rail welding, forging and welding to overall whole cast forging process design. Pin pin rail seat rail mounted conveyor middle groove, as the shearer support and guide track, and relying on the pin tooth 实现 traction shearer walking motion pin rail wheels bear the transmission torque, driven Shearer walk The important task is to ensure the normal operation of the shearer one of the important parts. Pin rail wheel length of life is directly related to the level of efficiency of the shearer. Domestic power shearer life is not long, usually in 1-3 months, study and improve the strength of the pin rail wheel has a very important significance. The following two aspects to consider improving the pin rail wheels to achieve the purpose of contacting the tooth surface to enhance the strength of the pin rail wheel and tooth root bending strength First, we shearer machine and walking portions were stress analysis determined by Shoulifenxi pin rail wheels during operation by the carrier, and find out reasons for the pin rail wheels susceptible to partial load. Secondly, the pin rail wheel tooth profile forming principle theoretical analysis. Outside cycloid forming principle, hypocycloid involute forming principle formed the basis of the principles of the theory cog (pin-rail) for forging cog (pin rail), located in the middle of the groove scraper ledge part, is Shearer walking track. Forged cog (pin track) meet the needs of general shearer, cheap, long lifetime. As for life without higher requirements, and requires relatively inexpensive price, the choice of cast cog (pin rail). The forging cog (pin rail) through multiple sets of processes were studied, to determine the five sections cog (pin rail) Heat treatment process: annealing and normalizing + tempering. Has greatly improved by heat treatment, the material toughness, tensile strength, elongation rate, performance indicators are beyond the design requirements, to good effect