Three-roller pipe rolling apparatus

Abstract

A 3-roller tube rolling mill is composed of a base, a closed machine frame with hydraulic push-pull and locking unit and lubricating tube, a motor, three roller units, three roller drive and balance regulators an electric controller.

Description

technical field [0001] The invention belongs to seamless steel pipe production equipment, in particular to a three-roll pipe mill for producing seamless steel pipes. Background technique [0002] At present, the three-roll pipe rolling mill is one of the leading equipment in the seamless steel pipe production equipment. The traditional structure of the three-roller pipe mill is: the rolls are installed in the drum, which can realize the stepless adjustment of different rolling angles and feeding angles. The upper cover of the frame is rotated and opened to change the rolls. The transmission mode is a single main Motor centralized transmission. For example, a complete set of equipment was introduced by a domestic factory, and several sets of three-roll pipe rolling mills were newly built in China. Except that the transmission mode of some rolling mills was changed from a centralized drive of one motor to three separate drives of motors, other structures have not undergone ma...

AI Technical Summary

Problems solved by technology

[0009] (1) There are many adjustment links of equipment, which are prone to some equipment failures or defects

And online adjustment affects production time, improving the effective operation rate of equipment is low;

[0010] (2) The equipment rigidity of the open frame is low, which affects the dimensional accuracy and surface quality of the blank tube and is beneficial to rolling thin-walled tubes;

[0011] (3) Due to the characteristics of the stress state of the metal in the deformation zone of three-roll rolling, it is determined that defects such as tail triangles are prone to occur when rolling thin-walled tubes. The light ones affect the product quality, and the severe ones are likely to cause process accidents such as rolling jams

The on-site adjustment quality of equipment has a great relationship with the quality of workers, control level and equipment accuracy, which is an uncertain factor.

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