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Four-line splitting rolling technology for fai 12mm round steel

A four-wire slit rolling and process technology, applied in metal rolling, metal rolling, manufacturing tools, etc., can solve the problems of high ellipticity requirements and difficult adjustment, so as to improve operation rate, output and economic benefits Significantly, the effect of improving hourly output and operating rate

Inactive Publication Date: 2012-12-12
XINJIANG BAYI IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Different from rebar products, round steel requires high ellipticity, smooth surface, no visible slitting belt folding is allowed, and adjustment is difficult. Therefore, the development of round steel slitting process cannot be gradually developed from double wire to rebar like rebar. The current three-wire, four-wire or even 5-wire split rolling

Method used

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  • Four-line splitting rolling technology for fai 12mm round steel
  • Four-line splitting rolling technology for fai 12mm round steel
  • Four-line splitting rolling technology for fai 12mm round steel

Examples

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Embodiment Construction

[0029] A four-wire split rolling process for Φ12mm round steel, such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, including K5 pre-segmentation pass, K4 pre-segmentation pass and K3 segmentation pass, of which:

[0030] (1) The dimensional tolerance of the section height and width of the rolled piece rolled before K5 pre-cutting is not greater than ±0.2mm;

[0031] (2) The rolls used in the K4 pre-slitting pass have four passes arranged side by side. The pass dimensions are as follows: the center distance between the two passes in the middle is 16mm, and the center distance between the two passes on both sides is 47.8mm. Roll wedge angle is 85 o —87 o ; Radius R of wedge top arc 4 1.5-1.8mm, the distance between the wedge tops is 6.8mm, the radius R of the pre-cut hole k4 6.6mm;

[0032] (3) The pass size of the rolls used in the K3 splitting pass is as follows: the wedge angle of the rolls is 55 o ~60 o ; Radius R of wedge top arc 3 The hei...

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Abstract

The invention discloses a four-line splitting rolling technology for fai 12mm round steel. The dimension tolerance of the height and the width of a rolled piece is no larger than + / -0.2mm through K5 pre-splitting pass, the center-to-center spacing of two hole patterns of in the middle of a K4 pre-splitting pass roller is 16mm, the center-to-center spacing of two hole patterns on two sides is 47.8mm, and the wedge angle of the roller is 85 degrees to 87 degrees; the arc radius R4 of the wedge top is 1.5-1.8mm, the wedge top space of an upper roller and a lower roller is 6.8mm, and the radius RK4 of a pre-splitting hole is 6.6mm; the wedge angle of a K3 splitting pass roller hole pattern is 55 degrees to 60 degrees; the arc radius R3 of the wedge top is 0.6-0.7mm, the height of the groove bottom is 14.13mm, the distance between the wedge tops is 0.7-0.9mm, the center distance of two middle grooves is 16.2mm, the center distance of two side grooves is 49.7mm, and the radius of the groove bottom is 6.8mm; front-row splitting wheels and rear-row splitting wheels are installed at the position of an outlet of the rolled piece of a K3 splitting pass from front to back at intervals, the double-edge splitting wheel edge strip wedge angle of each front-row splitting wheel is 55 degrees to 60 degrees, the double-edge center distance is 31.2-33.2mm, and the width of each wedge top is 1.6-2.2mm; the single-edge splitting wheel wedge angle of each rear-row splitting wheel is 85 degrees, the width of each wedge top is 0.8mm, and the distance between axes of the front-row splitting wheels and rear-row splitting wheels is 100mm.

Description

technical field [0001] The invention relates to a round steel split rolling process, in particular to a Φ12mm round steel four-wire split rolling process. Background technique [0002] Slitting and rolling of round steel, due to the obvious defects of slitting strips, basically no domestic production plant can apply this process. Different from rebar products, round steel requires high ellipticity, smooth surface, no visible slitting belt folding is allowed, and adjustment is difficult. Therefore, the development of round steel slitting process cannot be gradually developed from double wire to rebar like rebar. The current three-wire, four-wire or even 5-wire split rolling. Contents of the invention [0003] The purpose of the present invention is to provide a four-wire split rolling process for Φ12mm round steel, which has reasonable process steps and can effectively carry out four-wire split rolling for round steel. The round steel produced has a smooth surface and high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/16B21B27/02
Inventor 姜振峰孔利明李子文肖国栋
Owner XINJIANG BAYI IRON & STEEL
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