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Method for producing seamless steel tube with heat preservation cover of pilger mill

A technology of seamless steel pipe and production method, applied in the direction of temperature control, metal rolling, etc., can solve the problems of deteriorating the inner surface quality of the finished steel pipe, and achieve the effects of improving the inner surface quality, improving the wall thickness accuracy and lowering the production cost.

Active Publication Date: 2013-05-29
BERIS ENG & RES CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the above-mentioned combination of rolling mill and leveling machine, according to the traditional heating method of reheating furnace, the oxidation of the inner surface of the blank tube is more serious during the heating process. , will seriously deteriorate the quality of the inner surface of the finished steel pipe

Method used

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  • Method for producing seamless steel tube with heat preservation cover of pilger mill
  • Method for producing seamless steel tube with heat preservation cover of pilger mill
  • Method for producing seamless steel tube with heat preservation cover of pilger mill

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Embodiment Construction

[0023] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] refer to figure 1 as shown, figure 1 It is a flow chart of the production method of the seamless steel pipe with the heat preservation cover in the periodic pipe rolling mill of the present invention. Depend on figure 1 As can be seen, the seamless steel pipe production method of periodic pipe rolling mill band insulation cover of the present invention mainly comprises the following steps:

[0025] The capillary is sent into the periodic pipe rolling mill to be rolled into a waste pipe, and the temperature of the waste pipe leaving the periodic pipe rolling mill is below 850° C. (step 100);

[0026] Provide a heat preservation cover, during the blank tube rolling process, uniformly keep the blank tubes of the rolled-out period tube rolling mill warm, and raise the temperature to 900-1050°C (step 200);

[0027] A leveling machine is...

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Abstract

The invention provides a method for producing a seamless steel tube with a heat preservation cover of a pilger mill, which comprises the following steps sequentially: conveying a blank tube to the pilger mill to produce a crude tube; providing the heat preservation cover to carry out heat preservation and temperature rise on the crude tube in the process of rolling the crude tube; cutting off a leather head of the crude tube which is subjected to heat preservation and temperature rise; and providing a reeling mill to carry out reeling on the crude tube the leather head of which is cut off. Due to the characteristics of the pilger mill and the combination allocation of the pilger mill and the reeling mill, the method for producing the seamless steel tube of the invention utilizes the heat preservation cover to carry out random rolling, heat preservation and temperature rise on the crude tube, can solve the oxidation problem of the inner surface, saves energy, reduces consumption and reduces investment.

Description

technical field [0001] The invention relates to the technical field of production technology of seamless steel pipes, in particular to a production method of seamless steel pipes with a heat preservation cover on a periodic pipe rolling mill. Background technique [0002] The periodic pipe rolling process is a rolling process that can achieve large deformation, but at the same time, due to the defects of low wall thickness control ability and large deviation of the wall thickness of the produced steel pipes, in the traditional process, the waste pipes are heated and equipped with multiple machines Frame sizing machine for the production of ordinary finished steel pipes. This just needs to heat up the blank pipe processed by the periodic pipe mill to the temperature of 900-1050°C required by the process. In the prior art, the heating method of the reheating furnace is generally used for heating the blank pipe. [0003] In order to improve the wall thickness accuracy and prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B21/00B21B37/74
Inventor 李元德饶维江朱燕玉刘建国
Owner BERIS ENG & RES CORP
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