This technological process is especially suitable for large-diameter discs of Φ20-Φ35mm, uncoiling, unwinding, wire drawing, diameter reduction, straightening, and fixed-length blanking. It is a new process that replaces straight strip drawing.
Process Step: Coil Uncoiling and Pay-off
Generally, passive uncoiling is sufficient for round steel bars with a diameter of less than 20mm, but it is necessary to adopt active uncoiling for coils with a diameter greater than 20mm. In this process, we adopt horizontal active uncoiling, frequency conversion control, and adjustable speed. The safety factor of uncoiling work is high.
The Second Step of the Process: Disc Pre-Straightening
Straightening rollers arranged vertically and horizontally can simply straighten the disc, reduce the resistance entering the wire drawing machine or straightening machine, and reduce the power load of the wire drawing machine or straightening machine.
The Third Step of the Process: Drawing and Reducing
A high-torque horizontal wire drawing machine is used to obtain a cold-drawn disc with the required diameter through the wire drawing die. The wire drawing machine is designed with safety protection facilities such as a top wire wheel and a protective cover.
The Fourth Step of the Technological Process: the Disc is Round without Scratches and Straightened
The special straightening structure and straightening principle ensure the phenomenon of scratches and burrs caused by the friction between the disc and the straightening wheel during the straightening process.
The Fifth Step of the Process: Cutting to Length
Adopt advanced photoelectric sensing technology to achieve zero error in length determination, and the combination of fixed knife and moving knife makes the roundness of shearing fracture reach 98%.
The above large-diameter disc uncoiling, drawing, straightening, straightening, and fixed-length production process can also be added according to requirements without pickling and dephosphorization polishing machine to meet the requirements of bright galvanizing and chrome plating.
