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The development of the bar and tube straightening machine production field and the shape of the straightening work piece
- Dec 12, 2017 -

Finishing is the final process of quality control of special steel products. The bar and tube straightening machine usually uses straightening, polishing, chamfering, internal and external inspection, surface peeling, grinding and other defects to eliminate or detect the special steel products, so that the products fully comply with the requirements of the product standards and users, improving the product added value.

 

The bar and tube straightening machine is one of the key equipment in the process of pipe rod finishing. With the increasing demands of aerospace, military and nuclear power for high precision excellent talent, the importance of the bar and tube straightening machine in finishing process becomes more and more important.

 

In order to adapt to the development of the production field, the bar and tube straightening machine developed a lot of new straightening machine. According to the shape of the straightening work piece, the bar and tube straightening machine is mainly divided into the tube straightening machine and bar straightening machine.

 

The bar and tube straightening machine usually uses six or ten roller straightener. Precision steel pipe straightening adopts compound straightening scheme, the roller shape of straightening roller has a long hyperbola, can make the rolling and returning load distribution on the pipe as long as possible, so as to reduce the contact pressure, avoid producing straightening marks. The combined rolling or rounding loads can significantly improve the straightness of the head and tail and reduce the ovality of the pipe.

 

The bar and tube straightening machineutilizes the staggered arrangement of the straightening rollers which are inclined up and down, so that the rod is rotated and advanced under the friction of the straightening rollers to generate plastic bending deformation so as to achieve straightening. The nine-roller straightener forms a bending straightening triangle in the straightening process to realize straightening. The two roller straightener straightens the rolled piece by the curved roll gap formed between the concave and convex straightening rolls.


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