Working principle of sizing mill
2024/04/24
The sizing machine is a kind of equipment used for continuous rolling into straight seam tube billet. Its working principle is to continuously roll strip steel of different specifications into corresponding straight seam tube billet by roller or row roller forming, and then use high frequency induction (or contact) heating to weld the tube billet into straight seam steel pipe. The number of working racks of sizing machine is less, the general number of racks is 5~14, and the total reduction rate is about 3% ~ 7%. Increasing the number of sizing machine frames can expand the product specifications and bring convenience to production. There are many forms of sizing machine, according to the number of rolls can be divided into two-roll, three-roll, four-roll sizing machine; according to the rolling method is divided into longitudinal rolling sizing machine and oblique rolling sizing machine. The service life of the bearing of the sizing machine restricts the service life of the sizing roller box, and the service life of the bearing has a very important relationship with the design, manufacture and installation of the sizing roller box. The main function of the sizing machine is to continuously roll strip steel of different specifications into corresponding straight seam pipe blanks by roller or row roller forming, and weld the pipe blanks into straight seam steel pipes by high frequency induction (or contact) heating.
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