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Zhangjiagang City Zhangyun Machinery Manufacturing Co.,Ltd
Add:Xindong Road, Daxin Town, Zhangjiagang City, Jiangsu Province, China
Deformation Essence Of Roll-rolling Forging
Jan 05, 2018

The essence of the roll forging deformation is the rolling extension of the billet, the section of the billet becomes smaller and the amplitude of the surface increases. When the section deformation is large, it needs to be finished by several rolls. The process design is to determine the amount of ﹑ and elongation of the pressure under the roll forging of each working step. They depend on the size of the roller diameter, the shape size of the hole type, the temperature of the billet and the cooling lubrication. The end of the billet is clamped by a clamp, and is deformed under the roll of the first hole type of the sector mould (initial forming) and exits; it is then sent into the mode-free space of the lower orifice type, and then the roller pressure deformation (preform) is withdrawn, and according to the need of the deformation, the roller pressure is gradually formed to obtain the required forming workpiece (final shape). Is the most commonly used reverse roll forging method. When the feeding direction is sent in the direction of roller rotation, it is called forward roll forging, and the clamp is released immediately after the workpiece bites. The most commonly used roll forging machine is the two sides of the organic support of the double support roll forging machine, it has a larger stiffness, can get high-precision forgings, its roller diameter has 250~1250 mm a variety of specifications, the corresponding roll forging force for 400~4000 thousand cattle. Some double support roll forging machine at one end has a roll out, this is the cantilever type and double support combination of the composite roller forging machine, it can not only achieve longitudinal roll forging and can be completed in the cantilever end of the transverse broadening forming. In the mass production of roll forging, the manipulator is widely used to transfer the workpiece, to realize the automation of production process, to improve productivity and to reduce labor intensity.