Since the 1990s, China has started to study its cold drawing machine, so that the equipment can be effectively used in the construction of engineering machinery oil cylinders and single hydraulic cylinders. The cold drawing machine is used as its cold drawn steel pipe. The main processing equipment is often drawn non-ferrous or ferrous metal rods under normal temperature conditions.
The cold drawing machine can effectively carry out effective secondary processing on the barren pipe after extrusion and hot rolling, and can produce its thin-walled, precise and small-caliber products. The type of equipment can be directly divided according to the way of its body structure Frame type and three separate types.
If the cold drawing machine is used, according to its transmission method, it can be effectively divided into rack type, chain type, hydraulic transmission type and other types of drawing machines. Since the last century, China's equipment has mainly been single and double The transmission mode of the chain.
Under normal circumstances, the three bases of traditional drawing machines are respectively fixed on the foundation, and the concrete foundation effectively bears the bending moment and pressure generated by its drawing force, so its foundation will directly undergo its compression and bending deformation The foundation also undergoes bending deformation.
This will directly result in poor straightness of the pipe. As far as the transmission method is concerned, the cold drawing machine needs to effectively clamp the pipe head to pull the steel pipe when the pipe is drawn, which is driven by the chain and the chain system. Tube machine, so that its common shortcoming is cold drawing vibration.
The cold drawing machine cannot effectively ensure that the grains of its workpieces are oriented in the direction of cold drawing, especially after the sprocket and chain are worn, the chain transmission mechanism will directly produce its periodic impact load during the drawing process. Discontinuity is that the quality of the steel pipe cannot be effectively controlled.
