Technological method for symmetrical paired universal rolling of deformed steel

A technology of universal rolling and process method, applied in the direction of metal rolling, etc., can solve the problem of increasing the number of cutting heads/tails of cold saw cut-to-length sawing, increasing the blind area of ​​the head/tail of straightening rolled pieces, and more short-length rolled pieces on the cooling bed, etc. problems, to achieve the effect of comprehensive processing quality and mechanical properties, good surface quality, and small internal stress of the rolled piece

Inactive Publication Date: 2013-06-12
CISDI ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1) The sawing process of sawing facilities such as hot saws or hot shears after final rolling increases, saw blades and energy consumption increase;
[0008] 2) There are many short-length rolling pieces on the cooling bed, the control program of the cooling bed is complicated, and the production management cost incr

Method used

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  • Technological method for symmetrical paired universal rolling of deformed steel
  • Technological method for symmetrical paired universal rolling of deformed steel
  • Technological method for symmetrical paired universal rolling of deformed steel

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0035] Example 1

[0036] like figure 1 and figure 2 As shown, the process method for symmetrical bi-universal rolling of special-shaped steel of the present invention comprises the following steps:

[0037] 1) Rough rolling the original billet in the rough rolling unit through the two-roll edger in the form of plane symmetry into the intermediate billet of the double conjoined rolling piece;

[0038] 2) Cut off the irregularly deformed head and tail of the intermediate blank by the sawing and shearing facility;

[0039] 3) In the finishing rolling unit, the intermediate billet is universally rolled at the same time by the universal rolling mill and the two-roll edger in the form of plane symmetry, and the final section profile of the double one is finished by finishing rolling;

[0040] 4) The profiles rolled into double-piece final sections are cooled to room temperature, firstly divided into single rolled pieces by the splitting facility, and then straightened by the st...

Example Embodiment

[0041] Example 2

[0042] like figure 1 and figure 2 As shown, the process method for symmetrical bi-universal rolling of special-shaped steel of the present invention comprises the following steps:

[0043] 1) Rough rolling the original billet in the rough rolling unit through the four-high universal rolling mill in the form of plane symmetry into the intermediate billet of the double conjoined rolling piece;

[0044] 2) Cut off the irregularly deformed head and tail of the intermediate blank by the sawing and shearing facility;

[0045] 3) In the finishing rolling unit, the intermediate billet is universally rolled at the same time by the universal rolling mill and the two-roll edger in the form of plane symmetry, and the final section profile of the double one is finished by finishing rolling;

[0046] 4) The profile rolled into the final section of the double conjoined piece is cooled to room temperature, firstly straightened by the straightening facility, and then div...

Example Embodiment

[0047] Example 3

[0048] like image 3 and Figure 4 As shown, the process method for symmetrical bi-universal rolling of special-shaped steel of the present invention comprises the following steps:

[0049] 1) Rough rolling the original billet in the rough rolling unit through the two-roller edger in the form of axisymmetric to form the intermediate billet of the double conjoined rolling piece;

[0050] 2) Cut off the irregularly deformed head and tail of the intermediate blank by the sawing and shearing facility;

[0051] 3) In the finishing rolling unit, the intermediate billet is universally rolled at the same time by the universal rolling mill and the two-roll edger in the form of axial symmetry, and the final section profile of the double one is finished by finishing rolling;

[0052] 4) The profiles rolled into double-piece final sections are cooled to room temperature, firstly divided into single rolled pieces by the splitting facility, and then straightened by the...

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Abstract

The invention discloses a technological method for the symmetrical paired universal rolling of deformed steel. The technological method comprises the following steps of: (1) roughly rolling a raw blank into an intermediate blank of a double-connected rolling piece in a rough rolling unit; (2) cutting off irregular deformed head and tail parts of the intermediate blank by using a sawing and shearing facility; (3) simultaneously carrying out fine rolling on the intermediate blank of the double-connected rolling piece in a fine rolling unit to obtain a double-connected final-section sectional bar; and (4) cooling the rolled double-connected final-section sectional bar to room temperature, and subdividing and straightening the double-connected final-section sectional bar to obtain single final-section sectional bar products through subdividing and straightening facilities. The technological method disclosed by the invention is wide in application range and suitable for rolling various deformed steels, solves the existing problem of post-cooling bending of the single rolled deformed steel, simultaneously optimizes a rolling production line, reduces energy consumption of production, equipment loss and production cost, and improves the production efficiency, and in addition, the rolled piece is good in surface quality, small in internal stress, and good in comprehensive machining quality and mechanical performance.

Description

technical field [0001] The invention relates to a metal rolling method, in particular to a process method for symmetrical double universal rolling of special-shaped steel. Background technique [0002] Sectional steel is a straight strip steel with a definite cross-sectional shape and a relatively large ratio of length to section perimeter. It is widely used in construction, transportation, bridges, ships, electric power, machinery and other industries. Due to its special section, its rolling processing production method is also relatively complicated and difficult. The rolling methods mainly include ordinary two-roll rolling method and four-roll universal rolling method. Section steels of specific types and specifications require specific rolls and passes to complete the rolling from the original billet to the final finished product section. [0003] At present, except steel rails, H-beams, I-beams and other products that can be rolled by the four-roll universal rolling me...

Claims

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Application Information

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IPC IPC(8): B21B1/08
Inventor 谭成楠闵建军牛强李跃林马靳江
Owner CISDI ENG CO LTD
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