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Pull roll forming is an advanced cold roll forming process


The cold roll forming machine can be divided into rotary cold roll forming machine and double-arm cold roll forming machine and various special cold roll forming machines, such as special cold roll forming machine for shower room, special cold roll forming machine for train top beam, and special cold roll forming machine for elevator.
     The cold roll forming machine is fully hydraulically controlled, which is easy to operate and has high production efficiency. It can cold-bend various steel pipes, square pipes, H-beams, I-beams, channel steels, angle irons, flat irons and aluminum profiles with a section below 500mm. After cold roll forming, the arc shape is perfect, high precision and stability.
Good and unchanging, well received by customers.
The cold roll forming machine is mainly used for architectural arc-shaped steel structure, tunnel support, roof curved beam, subway engineering, aluminum door and window, curtain wall, ceiling, cylindrical inner frame, lanai handrail, shower door, flower greenhouse, production line track, telephone booth, Fitness equipment, display racks and other industries.
Pull cold roll forming product parameters
1, the cold roll forming radius
Minimum cold roll forming radius: aluminum profile (R outside -R) / R outside ≤8%
Stainless steel profile (R outside -R) /R outside ≤30%
The maximum cold roll forming radius is not limited
2, the cold roll forming radius tolerance:
The radius is less than 1 meter, and the deviation per meter length is less than ±1mm
The radius is greater than 1 meter, and the deviation per meter length is less than ±2mm
3, material calculation: the end reserved chuck amount of 300mm. Simple symmetrical small section profiles do not require test materials, complex sections or large breaks
The surface profile needs to provide 1-2 test materials, and the material utilization rate is calculated as 95% according to the 6-meter profile.
The cold roll forming is an advanced cold roll forming process, the main features are as follows:
Can roll form various profile sections
Almost all sections of aluminum, steel, stainless steel, copper and other metal profiles, pipes can be bent.
Good cold roll forming quality
★ Materials that have been sprayed, electrophoresed, plated, polished, brushed, etc. can be bent directly without damaging the surface of the material.
★ Cavities and complex sections can be formed at one time. With the relative cold roll forming radius allowed, the inner wall will not wrinkle and the cross section will not be distorted.
★ Pulling and cold roll forming can effectively eliminate the residual stress inside the material, and the product dimensional stability is good.
★ Due to the cold work hardening of metal materials, the material can be improved after bending and cold roll forming.
Can bend a variety of curved shapes
In addition to cold roll forming the standard standard arc, it can also bend U-shaped, S-shaped, W-shaped, elliptical, parabolic, circular arc with straight segment, cone curve, a curve with a variety of radius and other complex curves shape.
Strong cold roll forming ability
★ Maximum cold roll forming arc length: 12 meters
The maximum length of one molding can reach 12 meters, which can improve the installation efficiency, reduce installation cost, save materials and improve engineering quality for projects that require longer arc length.
★ Maximum cold roll forming section: 500mmx350mm
★ cold roll forming radius: Unrestricted if the material‘s mechanical properties (elongation) allow.
 
        The structural innovation of the cold roll forming machine refers to the improvement of the structure of the cold roll forming machine. The cold roll forming machine includes a frame and a rotating arm, and a large disk is combined on the upper side of the frame, and two rotating arms are symmetrically pivoted on both sides of the front end of the frame, and a movable cylinder seat with a chuck is mounted on the upper rail surface of the rotating arm, and the rotating arm is driven One end of the pulling cylinder is hinged to the front section of the frame, and the other end is hinged to the inner flange of the rotating arm by the outer end of the piston rod, the flange is located on the outer section of the rotating arm, the frame, the rotating arm and There is an active triangle relationship between the cold roll forming cylinders. The cylinder of the cold roll forming machine does not need to pass through the middle part of the arm, so that the arm does not need to be hollowed out in the middle, ensuring the integrity of the arm and strengthening the strength and rigidity of the arm of the cold roll forming machine.

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