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Hot-rolled seamless tube on-line accelerated cooling device and method

A seamless steel pipe, accelerated cooling technology, applied in the direction of cooling bed, metal rolling, metal rolling, etc., can solve the problems of uneven temperature distribution, bending of steel pipe, and failure to effectively implement hot-rolled seamless steel pipe

Inactive Publication Date: 2009-04-01
刘彦春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the field of hot-rolled seamless steel pipe production, due to the characteristics of the product shape, whether it is along the length or along the circumferential direction, the uneven temperature distribution will cause the steel pipe to bend severely
Therefore, for many years, the online accelerated cooling process of hot-rolled seamless steel pipes has not been effectively implemented

Method used

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  • Hot-rolled seamless tube on-line accelerated cooling device and method
  • Hot-rolled seamless tube on-line accelerated cooling device and method
  • Hot-rolled seamless tube on-line accelerated cooling device and method

Examples

Experimental program
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Effect test

Embodiment

[0022] The hot-rolled seamless steel pipe online accelerated cooling device of the present invention is such as figure 1 , image 3 with Figure 4 As shown, a horizontal rotation mechanism is added to the bottom of the conventional conical roller table to make the conventional conical roller table form a variable-angle roller table group, and the change of its rotation angle is controlled by electrical components. The range of the variable angle is As follows: the angle θ between the roller table centerline 10 when the angle of the variable-angle roller table changes and the roller table centerline 9 at the initial position of the variable-angle roller table is between 10°~45°; set the sizing machine 1 to cold The roller table of bed 7 is divided into two sets of variable angle roller table groups, namely variable angle roller table I group 2 and variable angle roller table II group 3.

[0023] The lengths of the two sets of variable-angle roller sets are greater than or equal to...

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Abstract

A hot-rolled seamless steel pipe on-line cooling accelerator and a method thereof are characterized in that an opposite tapered roller way set is divided into two roller sets and each set is provided with a set of horizontal revolving gear and a set of electric element control device below the opposite tapered roller way; therefore, each roller way set can form the set with changeable angle and the length of each roller way set with changeable angle is at least equal to the length of the manufactured steel pipe. The usage method is that by changing the angle of the roller way with changeable angle, the motion type of the hot-rolled seamless steel pipe is changed from horizontal advance to spiral advance after the hot-rolled seamless steel pipe thoroughly pass through a sizing mill. By improving the conventional roller way, the hot-rolled seamless steel pipe on-line cooling accelerator can be manufactured and by changing the advance type of the hot-rolled seamless steel pipe, even heating of the hot-rolled seamless steel pipe along lengthwise direction and circumferential direction can be ensured; therefore, the pipe can be prevented from being bent.

Description

Technical field [0001] The invention belongs to the technical field of steel rolling, and particularly relates to an online accelerated cooling device and method for hot-rolled seamless steel pipes. Background technique [0002] The controlled rolling and controlled cooling technology (TMCP) and process of steel materials and their influence on the structure and properties of steel have always been one of the research hotspots of materials work at home and abroad. In the past 30 years, in the fields of plates, rods and wires, through the implementation of the online accelerated cooling (ACC) process on hot rolled products, the mechanical properties have been significantly improved. However, in the field of hot-rolled seamless steel pipe production, due to the characteristics of the product shape, the uneven temperature distribution along the length or the circumferential direction will cause the steel pipe to be severely bent. Therefore, for many years, the online accelerated coo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B45/02B21B43/00B21B37/76
Inventor 刘彦春钟锡弟李群庄钢
Owner 刘彦春
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