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Introduction of The Cold Roll Forming Technology

Views: 1002     Author: steelmama     Publish Time: 2024-01-11      Origin: roofing sheet machine


Cold roll forming consists of gradually and continuously forming a steel profile.

The method consists initially unrolling the strip of a steel coil, whose width corresponds to the developed of the finished profile.This band, also called strip, is then engaged flat in a succession of several rolls called rollers whose shapes and numbers are variable depending on the complexity of the desired steel profile.

roof c purlin machine

According to the different needs of users, the corrugated roof panel cold roll forming machinecan match different parts to realize the cold bending processing of rail, I-beam, H-steel, iron and other materials. It has the advantages of high efficiency, easy transportation, convenient operation and so on.

The precision forming technology is used to replace the traditional cutting process. Because the internal gear of the reduction shaft has to bear great instantaneous bearing capacity, and at the same time, it also has to maintain the centering effect, so its coaxiality and mechanical strength are required to be higher, which makes the plastic forming more difficult, and effective process measures need to be taken.

double layer roofing making machine

Double Deck Roof Roll Forming Machine

The process of the ibr roofing sheet cold roll forming machine is similar to the bending process, it is not a pure rolling process, but a special production method. The profile produced by this method has thin wall, light weight, high rigidity, complex shape and great length.

The main equipment of cold-formed profile production is cold forming unit, which has many kinds of classification methods. Forming machine can be divided into profile glazed tile roof forming machine and welded pipe forming machine according to the products produced; cantilever forming machine and gantry forming machine according to the frame type; roller forming machine, row roller forming machine and crawler forming machine according to the forming mechanism.

cold rolling c purlin machine

automatic c purlin machine

The horizontal roll is the transmission frame, which undertakes the main task of tube blank deformation. The vertical roll is passive, which is set between two horizontal rolls or in groups. Its main function is to guide, participate in partial deformation and prevent the rebound of deformed strip.

In the production process of standing seam roll forming machines, when the metal strip passes through several pairs of rollers with pass in turn, the strip is fed forward with the rotation of the roller, and is continuously bent at the same time, so as to obtain the parts with the required cross-section shape. It can be seen that roll forming is a continuous bending method.

Cold roll forming is a plastic processing method in which the whole length of the strip passes through several different passes in turn, the local part is gradually bent and deformed, the shape of the whole section is gradually close to that of the finished product, and finally the product with uniform section is obtained. The pass is formed by the contour of two or more forming rolls (also known as rollers and rolls) with a certain shape. The forming rolls may be horizontal rolls or vertical rolls. Pass is one of the important factors affecting product quality and productivity.

trapezoidal roofing sheet machine

high speed trapezoidal sheet roll forming machine

The forming roll is installed on the frame. The forming roll which is responsible for driving the strip forward is driven by the motor through the transmission system. Generally, only the horizontal roll acts as the driving roll, and the vertical roll often acts as the passive roll. Each frame is called a steel ridge cap forming machine, each forming machine is equipped with two or more forming rollers, and each forming unit is composed of more than two floor deck steel making forming machines.

corrugated sheet machine

Corrugated Roof Machine

This succession of rollers is decomposed into a number of operations.Each operation corresponds to a profiling head.Each head is similar to a small rolling mill cage with two shafts, one upper and the other lower, supporting the rollers with conjugate profiles, machined to match the forming they must perform and between which passes the metal strip.

These rollers are made of high strength steel and manufactured by us.All of these rollers, called roller train, are defined by our design office which determines the "flower pattern".This is the number of operations required to manufacture a steel profile.A head represents a partial deformation operation of the flat steel strip.The band goes in one head, then in another and so on successively to the desired end result.This successive passage of the band in the profiling heads progressively transforms the metal strip towards its final shape.This process respects the mechanical and characteristic stresses of the metal and allows the use of multiple grades of steels from S235 to multiphase steels.

Indeed, the two shafts of each head are controlled by the motor of the c purlin machine, which ensures a regular drive of the band.The forming of the profile being performed very gradually, we do not have to fear the cracks or even the breaks that occur in the cold bending to the press or stamping.

Finally, although it is not a rolling, the operation produces a certain surface hardening known as the "skin effect".The manufacturing, initially limited to hot and cold rolled steel strip sections, has gradually expanded to include stainless steel and aluminum and copper alloy profiles.

During the cold roll forming, operations such as punching, stamping, can be done online.Then, the metal section is cut at the end of the line to the desired length.The profiling operations are performed cold, because carried out at room temperature, they do not require the heating or melting of the metal for the manufacture of a profile.

The cold roll forming operation does not bring about any substantial modification to the flat product used concerning its thickness and its mechanical characteristics.The cold forming industry is part of the primary metal processing industry between the steel industry and users.

The cold roll forming advantages are numerous

1).Development, diversity and complexity of forms that meet all the needs of users.

2).Curvature radius corresponding to the thickness of the metal strip.

3).Lightening the weight of structures by roll forming steels with high elastic limits.

4).Ease of implementation in assemblies with welding, riveting, bolting, gluing.

5).Variety of possible delivery lengths of steel profiles, up to 30 meters.

6).Diversity of surface conditions such as hot roll, pickled, cold rolled, prepainted, and galvanized.

If you want to know more detail technology of the cold roll forming industry,you're welcomed to follow some of my recent articles.

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