CN-122007216-A - Right-angle steel forming system and method

CN122007216ACN 122007216 ACN122007216 ACN 122007216ACN-122007216-A

Abstract

The application discloses a right-angle section steel forming system and method, wherein the system comprises a processing production line, a prepressing roller press, a heating unit and a forming roller press, wherein the prepressing roller press is used for rolling section steel materials into prepressing groove section steel with raised bottoms, and the forming roller press is used for rolling the prepressing groove section steel into channel steel finished products with flat bottoms and right angles at corners. The forming roll press is internally provided with a rolling channel with a right angle part, the pre-pressed groove-shaped steel passing through the rolling channel is rolled into right-angle U-shaped steel or channel steel with a flat bottom, and the rolling material and the guiding material directionally flow and fill the steel, so that the problems of corner thinning, cracking and rebound in cold roll forming of high-strength steel are effectively solved, and products with smaller external angle radius and appearance close to right angles can be obtained.

Inventors

YAO WENQIU
LI XUETAO
ZHENG XUEBIN
LI CHUNGUANG
LIU LIXIAN
MA WENYU

Assignees

首钢集团有限公司

Dates

Publication Date: 20260512
Application Date: 20260304

Claims (10)

1. A right angle steel forming system, comprising: the processing production line is used for conveying the profile steel materials; The pre-pressing roller press is arranged on the processing production line; the heating unit is arranged on the processing production line and is positioned behind the pre-pressing roller press along the conveying direction of the processing production line; The forming roller press is arranged on the processing production line and is positioned behind the heating unit along the conveying direction of the processing production line; the forming roll press is used for rolling the pre-pressed groove-shaped steel into a channel steel finished product with a flat bottom and right angles at corners.
2. The right angle steel forming system of claim 1, wherein the pre-press roll press comprises: the middle part of the first pre-pressing roller is provided with an annular concave part along the radial direction; the middle part of the second pre-pressing roller is provided with an annular convex part along the radial direction, and the annular convex part is matched with the annular concave part in shape; the annular convex part corresponds to the annular concave part and is arranged at intervals.
3. The right-angle steel forming system according to claim 2, wherein, The annular convex part comprises a round platform part and two conical parts; along the axial direction of the annular convex part, two conical parts are respectively positioned at two sides of the round platform part, and the radial section of the conical part gradually decreases from one side close to the round platform part to one side far away from the round platform part.
4. A right angle steel forming system according to claim 2 or 3, comprising: the prepressing roller presses are sequentially arranged at intervals along the conveying direction of the processing production line, and the diameters of the annular convex parts on the second prepressing rollers are gradually increased.
5. The right-angle steel forming system according to claim 4, wherein, And along the conveying direction of the processing production line, the annular convex parts of the second pre-pressing rollers gradually decrease in size along the axial direction.
6. The right-angle steel forming system according to claim 1, wherein, The forming roller press comprises a first forming roller and a second forming roller which are spaced along the thickness direction of the bottom of the pre-pressed groove-shaped steel, and a third forming roller and a fourth forming roller which are spaced along the width direction of the bottom of the pre-pressed groove-shaped steel; Projecting along the conveying direction of the processing production line, wherein the first forming roller, the second forming roller, the third forming roller and the fourth forming roller enclose a forming channel with right angles at corners; The first forming roller is provided with an extrusion part along the circumferential direction, the extrusion part and the second forming roller jointly extrude the bottom of the pre-pressed groove-shaped steel in the forming channel, and the bottom material of the pre-pressed groove-shaped steel bulge is guided to be filled into the corner.
7. The right angle steel forming system according to claim 6, comprising a plurality of the forming roller presses disposed along a conveying direction of the processing line, and a distance between the pressing portion and the second forming roller is gradually reduced.
8. The right-angle steel forming system according to claim 6 or 7, wherein, The first forming roller comprises a first part and a second part, and the second part is arranged on the outer periphery side of the first part in a centering way; The first portion has a larger dimension than the second portion in an axial direction of the first forming roller to form the pressing portion.
9. The right angle steel forming system of claim 1, further comprising: and the temperature measuring unit is positioned between the heating unit and the forming roller press along the conveying direction of the processing production line.
10. A method of forming right angle steel, characterized in that it is based on a right angle steel forming system according to any one of claims 1-9; Pre-rolling the steel material by a pre-rolling roller press to obtain pre-pressed groove-shaped steel with a raised bottom; Heating the corner regions of the pre-pressed groove profile steel through a heating unit; And extruding the heated bottom of the pre-pressed groove profile steel through a forming roller press, so that the pre-pressed groove profile steel is rolled into a channel steel finished product with a flat bottom and right angles at corners.

Description

Right-angle steel forming system and method Technical Field The application relates to the technical field of hot roll forming, in particular to a right-angle section steel forming system and method. Background The existing right-angle U-shaped steel mainly depends on integral hot rolling or splicing welding, the former has high energy consumption, serious pollution and poor flexibility, and the latter has more welding seams, large residual stress and low precision. While the traditional roll forming is efficient, the corners are easy to thin and crack due to work hardening when processing high-strength steel, the external corner radius is large, the rebound is serious, and the requirements of high strength, precision and mass production are difficult to meet. Disclosure of Invention The embodiment of the application provides a right-angle steel forming system and a right-angle steel forming method. In a first aspect, the present application provides a right angle section steel forming system, comprising a processing line for conveying section steel materials; The pre-pressing roller press is arranged on the processing production line; the heating unit is arranged on the processing production line and is positioned behind the pre-pressing roller press along the conveying direction of the processing production line; the forming roller press is arranged on the processing production line and is positioned behind the heating unit along the conveying direction of the processing production line; The pre-pressing roller press is used for pre-rolling the profile steel material into pre-pressing groove profile steel with raised bottom, and the forming roller press is used for rolling the pre-pressing groove profile steel into a channel steel finished product with flat bottom and right angle corners. In some embodiments, the pre-pressing roller press comprises a first pre-pressing roller, wherein the middle part of the first pre-pressing roller is provided with an annular concave part along the radial direction; the middle part of the second pre-pressing roller is provided with an annular convex part along the radial direction, and the annular convex part is matched with the annular concave part in shape; The annular convex part and the annular concave part are arranged correspondingly and at intervals. In some embodiments, the annular protrusion comprises a frustoconical portion and two conical portions; Along the axial direction of the annular convex part, two conical parts are respectively positioned at two sides of the round platform part, and the radial section of the conical part gradually decreases from one side close to the round platform part to one side far away from the round platform part. In some embodiments, the method includes a plurality of pre-pressing roller presses, which are sequentially arranged at intervals along the conveying direction of the processing line, and the diameters of the annular convex parts on the plurality of second pre-pressing rollers are gradually increased. In some embodiments, the annular projection of the second plurality of pre-press rollers is tapered in an axial dimension along a conveying direction of the processing line. In some embodiments, the forming roller press includes first and second forming rollers spaced apart in a direction of pre-pressing the bottom thickness of the channel steel, and third and fourth forming rollers spaced apart in a direction of pre-pressing the bottom width of the channel steel; Projecting along the conveying direction of the processing production line, and enclosing the first forming roller, the second forming roller, the third forming roller and the fourth forming roller to form a forming channel with a right angle at the corner; The first forming roller is provided with an extrusion part along the circumferential direction, and the extrusion part and the second forming roller jointly extrude the bottom of the pre-pressed groove-shaped steel in the forming channel to guide the bottom material of the pre-pressed groove-shaped steel bulge to fill the corner. In some embodiments, a plurality of forming roller presses are included, disposed along the conveying direction of the processing line, with a progressively decreasing distance between the press section and the second forming roller. In some embodiments, the first forming roll includes a first portion and a second portion, the second portion centrally disposed on a peripheral side of the first portion; The first portion has a larger dimension than the second portion in the axial direction of the first forming roller to form the pressing portion. In some embodiments, the apparatus further comprises a temperature measuring unit located between the heating unit and the forming roller press along the conveying direction of the processing line. In a second aspect, the present application provides a method for forming right-angle steel, based on the right-angle steel forming system provide