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Full-floating mandrel tandem-rolling seamless steel pipe production process

A technology of seamless steel pipe and production process, applied in the direction of metal rolling, etc., can solve the problems of low production efficiency, high consumption, high pollution, etc., and achieve the effect of fast rolling rhythm, high output and saving production cost

Inactive Publication Date: 2011-01-26
胡顺珍
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional perforation + automatic pipe rolling machine + cold drawn seamless steel pipe production process has low production efficiency, high consumption and high pollution

Method used

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  • Full-floating mandrel tandem-rolling seamless steel pipe production process
  • Full-floating mandrel tandem-rolling seamless steel pipe production process

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Embodiment Construction

[0022] In order to enable those skilled in the art to better understand the solution of the present invention, and to make the above-mentioned purpose, features and advantages of the present invention more obvious and comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] Such as figure 1 As shown, the full-floating mandrel continuous rolling seamless steel pipe production process provided by the present invention comprises the following steps:

[0024] Heating The tube blank is heated in a heating furnace.

[0025] The heating furnace can be an inclined bottom heating furnace, an annular heating furnace, or a walking heating furnace, and the heating temperature range is 1100-1280°C;

[0026] Piercing Set up a piercing machine to perforate the heated tube blank.

[0027] The perforator can be a vertical fungus perforator or a Diesel vertical perforator;

[0028] 6-frame hollow b...

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Abstract

The invention discloses a full-floating mandrel tandem-rolling seamless steel pipe production process for solving the problem of low production efficiency, high consumption and high pollution in the traditional perforation, lube rolling mill and cold drawn seamless steel tube production process. The production process comprises the following steps of: heating, heating pipe blanks in a heating furnace; perforating, perforating the heated pipe blanks by a provided perforator; carrying out diameter reduction by utilizing six stand hollow billets: reducing diameter of the perforated tubular billets by a six-stand hollow billets diameter reducer; carrying out eight stand tandem rolling, extensively rolling the tubular billets after the diameter reduction by utilizing the six stand hollow billets by a tandem rolling pipe mill continuously provided with the eight stands; carrying out single stand mandrel removing, removing mandrels from pierced billets with mandrels after the eight stand tandem rolling by a single-stand mandrel removing machine; carrying out 28-stand tension diameter reducing, rolling the pierced billets after mandrel removing in an 28-stand tension diameter reducer to form hot finished-product steel pipes; and finishing, finishing the hot finished-product steel pipes to form finished-product steel pipes.

Description

Technical field [0001] The invention relates to a production process of a fully floating mandrel continuous rolling seamless steel pipe, which belongs to the technical field of metal rolling. Background technique [0002] The traditional perforation + automatic pipe rolling machine + cold drawn seamless steel pipe production process has low production efficiency, high consumption and high pollution. Contents of the invention [0003] The purpose of the present invention is to provide a high-yield, high-quality, low-consumption, and pollution-free production process for continuous rolling of seamless steel pipes with full floating mandrels. [0004] In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical scheme: the production process of the continuous rolling seamless steel pipe with full-floating mandrel provided by the present invention includes the following steps: [0005] Heating The tube blank is heated ...

Claims

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Application Information

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IPC IPC(8): B21B19/04B21B19/10
Inventor 胡顺珍王彦飞董丽君曹康乐解建波
Owner 胡顺珍
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