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Seamless pipe four-roller type hot sizing stand

A technology of seamless steel pipe and sizing machine, which is applied in the direction of metal rolling stand, metal rolling mill stand, driving device for metal rolling mill, etc. , to achieve the effect of convenient use, compact structure and reasonable structure design

Inactive Publication Date: 2007-09-12
DALIAN SAGE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this sizing machine are:
[0003] 1. Each size specification of seamless round steel pipe needs to be equipped with a set of roll racks. Therefore, each sizing machine has hundreds of roll racks, which is not easy to manage and increases manufacturing costs.
[0004] 2. When the roll needs to be repaired, it must be repaired together with the frame, so it must be equipped with a special machine tool, which is not easy to repair and increases the cost

Method used

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  • Seamless pipe four-roller type hot sizing stand
  • Seamless pipe four-roller type hot sizing stand
  • Seamless pipe four-roller type hot sizing stand

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Embodiment Construction

[0022] Shown in Fig. 1, 2, 3 is the concrete embodiment of the present invention, and it is the seamless steel pipe four-roller heat sizing machine that is installed on the ∮ 325~700mm seamless steel pipe production line; Car 1, the sizing main engine, is characterized in that: the sizing main engine is installed on the rear side of the track 2, and the sizing main engine is composed of a frame, a horizontal sizing roller group, and a side sizing roller group. The base 9 and the column 8 are in use. 1. Crossbeams 5 are connected to each other to form the base 9 of the square frame, and three groups of horizontal sizing roller groups and two groups of side-standing sizing roller groups are installed in sequence, and each group of horizontal sizing machines is composed of a frame 6. Flat roller 4 with large fan angle, vertical roller 3 with small fan angle, roller shaft 11 and transmission mechanism, corresponding to the position of the processed tube 14, installed in the frame 6...

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Abstract

The present invention relates to one kind of four roller type hot sizing machine for seamless steel pipe. The hot sizing machine includes one main sizing mechanism on one side of the rail and comprising one frame, one horizontal sizing roller set and one side vertical sizing roller set; one roller changing carriage with roller changing hydraulic cylinder for pushing the horizontal sizing roller set and the side vertical sizing roller set into the square frame or drawing out; and horizontal sizing roller set and side vertical sizing roller set locking hydraulic cylinder. The present invention has reasonable design, compact structure, closed pass structure resulting in increased sizing reduction and raised sizing quality, high production efficiency and other advantages.

Description

technical field [0001] The invention belongs to rolling equipment for seamless steel pipes, in particular to a four-roller thermal sizing machine for seamless steel pipes. Background technique [0002] It is well known that the seamless round steel pipe rolled by the seamless steel pipe rolling equipment is affected by some factors during the high-temperature rolling process, and the ellipticity shape tolerance of the outer diameter of the round pipe often does not meet the standard requirements; Therefore, it is necessary to use a sizing machine to round the outer diameter of the rolled round steel pipe billet to make it a qualified seamless round steel pipe product; at present, the sizing machine used to round the seamless round steel pipe, It mainly adopts a three-roller round tube sizing machine. Its structure consists of a three-roller sizing main engine, a roller changing car on the track, and the transmission mode of the main engine is internal transmission. The three...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B19/10B21B31/08B21B35/00
CPCB21B31/10B21B13/103B21B31/103B21B17/14
Inventor 高国鸿郎兆魁马丽
Owner DALIAN SAGE GROUP
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