Compact chain refers to the chain in the phase of the two ring width are obviously different, on conveying equipment, under the condition of the same diameter of ring width is smaller than flat ring so outside without changing the size of the conveyor equipment chain, can make the effect of transportation equipment upgrade, enhance the transport capacity of transportation equipment. At the same time, because made ring straight arm part and conveyor chain plate surface contact, changing the characteristics of the traditional linear contact ring chain, increase the wear resistance.

Chain steel annealing state after admission, must pass a test conform to the requirements of the standard, qualified to enter the blanking process, raw materials to cut into a short period of blanking process, such as raw materials using 8460 mm sawing machine cutting length is 526 mm, this process - with special tooling or digital-control sawing, enough to guarantee + 0.3 tolerances.

Chain process is one of the important processes, are divided into different heat and cold, the feeder room temperature establishment called cold, because of mine chain diameter long phi 14 or more, so the cold bending property for the materials have high requirements, writing in the process of the ring link bend arc subjected to tension, circular arc surface by the agent in compressive stress effect, so that the inside parts link arc easily produce micro crack and wrinkle, even cause the brittle fracture, skin effect generated when the welding current, the formation of large current density, especially when cracks, there are both workpiece resistance and contact resistance, late when welding temperature can produce burns, cracks.