The quick change roll forming machine is to continuously bend the coils, strips and other metal plates and strips horizontally through the multi-pass forming rolls arranged in sequence, so as to make the average force of each pass of the specific section profile. The force and wear are balanced, and the service life of the roll is extended. The use of C12MoV material for the roll of the cold forming machine is based on its wear resistance, but the specific strength and hardness are contradictory. The red hardness of C12MoV should be used during heat treatment. After quenching, two or even three times tempering can achieve hardness.
The arc part of the track of the cold bending forming equipment is the core part of the slide rail. The arc position after the first few passes is pressed and formed. When the vertical edge is rolled and folded in the subsequent passes, the formed arc should be effectively carried out through the upper and lower rollers or the horizontal wheel. Tube bundle protection, otherwise, the arc position of the material will change during the stretching process, the R becomes smaller and becomes a triangle, the steel ball does not reach the bottom, and the two-point contact produces noise. , Uneven force, slide rail deformation, shorten life. The problem of rolling stability. In production, the problem of material swaying left and right in the raceway is often encountered. In fact, a single set of rollers is asymmetrical. Machines for yawed plastic working processes.
In quick change roll forming machine, cold-formed steel is an important material for manufacturing light-weight steel structures. It is made of cold-formed steel plates or steel strips. Structure and vehicle manufacturing, agricultural machinery manufacturing and many other aspects. There are also many varieties of cold-formed steel, for example, according to the cross-section, it can be divided into open teeth, semi-closed, etc., according to the shape, it can be divided into angle steel, Z-shaped steel, etc. With the development of society and the advancement of science and technology, the market for cold-formed steel has become larger and larger. Many manufacturers have begun to invest in the production and processing of cold-formed steel, but there will be some problems in the process of producing cold-formed steel. For example, cold-formed steel shows pocket waves in the process of production, which will affect the quality and performance of the material.
Because cold-formed steel is a kind of thin steel, the probability of bag-shaped wave in cold-formed equipment is higher than that of thick plate, mainly because the width of the section edge of cold-formed steel has a certain influence on the bag-shaped wave. . The operator needs to apply a certain pulling force to the sheet to alleviate the phenomenon of pocket wave.
The reason for the formation of the pocket wave is mainly due to the off-line situation in the bending process, so there is transverse tensile stress and strain force in the middle of the bending, so the longitudinal cold-formed steel part will exert a certain pressure on the middle part, so The middle part will be unbalanced, resulting in a pocket wave.