forming methods of roll forming machine
General color steel tile cold roll forming method can be summed up into the following three kinds of:1 sequential Molding method is to first suppress the formation of the middle wave type, and then in order to suppress the formation of the outside wave type. Alternatively, the outer side can be suppressed first, and then the middle wave type is completed sequentially. The utility model has the advantages of high wave type and dimensional precision, and small deformation stress in the finished product, which is advantageous to the design of the roller hole type. The disadvantage is that the number of rollers required, the size of the equipment, large and heavy.
2 whole forming. at the same time to suppress the formation or a plurality of wave types into several segments formed. The advantage is that the number of rollers required is small, the size of the equipment is smaller, light weight, convenient transportation. The disadvantage is that the stress concentration after compaction, resulting in large deformation stress, at the same time the design of roller type is more difficult.
3 The combination of forming process in a part of the wave-shaped compression molding, the other part of the wave form also began to suppress the formation.
This method uses less roll than sequential forming method, more than simultaneous forming method, its forming stress is between two kinds, roll design is more complex.
