CN-122007219-A - Right-angle curled section steel forming system and method

CN122007219ACN 122007219 ACN122007219 ACN 122007219ACN-122007219-A

Abstract

The application discloses a right-angle curled section steel forming system and method, wherein the forming system comprises at least one rolling forming pass, the rolling forming pass comprises a first driving roller, a second driving roller and two driven rollers, the first driving roller and the second driving roller are arranged between the two driven rollers to enclose and form a rolling space, a core mold is fixedly arranged in the rolling space, the core mold is arranged at intervals with the first driving roller, the second driving roller and the two driven rollers to form a rolling channel for curled section steel to pass through, and the core mold rigidly supports the inner wall of curled section steel and forms a high-constraint forming environment in cooperation with the first driving roller, the second driving roller and the driven rollers, so that pipe wall collapse and section distortion are effectively restrained. The method actively guides a material flow mechanism, ensures that the material fully fills the right-angle area, obviously improves the definition and the dimensional accuracy of the outline of the corner, and is particularly suitable for high-precision processing of difficult-to-shape materials such as high-strength steel.

Inventors

YAO WENQIU
MA WENYU
WANG YUE
LIU SHAOPENG
LI CHUNGUANG
LI XUETAO
ZHENG XUEBIN
ZHANG WEI
Sang He
HAN LONGSHUAI
HUANG XU
HU KAIGUANG

Assignees

首钢集团有限公司

Dates

Publication Date: 20260512
Application Date: 20260304

Claims (10)

1. A right-angle hemming section steel forming system is characterized by comprising at least one rolling forming pass; the roll forming pass comprises a first driving roller, a second driving roller and two driven rollers; The first driving roller and the second driving roller are arranged at intervals and in parallel, the two driven rollers are arranged at intervals and in parallel, and the first driving roller and the second driving roller are arranged between the two driven rollers so as to form a rolling space in a surrounding manner; The mandrel is fixedly arranged in the rolling space, and the mandrel, the first driving roller, the second driving roller and the two driven rollers are all arranged at intervals to form a rolling channel for the curled section steel to pass through; the mandrel is used for forming rigid support on the inner wall of the curled section steel, and is used for cooperatively applying extrusion with the first driving roller, the second driving roller and the two driven rollers so as to guide the curled section steel to be filled into the target contour area of the rolling channel, and further enable the curled section steel to form a preset section contour.
2. The right-angle bead steel forming system according to claim 1, wherein, The first driving roller, the second driving roller and the driven rollers jointly enclose a rolling space with a rectangular section; The outer peripheral side surface of the core mold is respectively arranged in parallel with the axes of the corresponding first driving roller, second driving roller and two driven rollers, so that the rolling channel with the rectangular frame-shaped cross section is formed; the right angle profile area of the roll channel constitutes the target profile area.
3. The right-angle bead steel forming system according to claim 2, wherein, The outer peripheral side of the core mold is provided with a connecting part which is used for being fixedly connected with a bracket of the driven roller; The connecting portion is provided corresponding to the opening side of the hemming section steel.
4. The right angle bead steel forming system of claim 1, wherein the at least one roll forming pass comprises a first forming pass, a second forming pass, and a third forming pass; along the advancing direction of the curled section steel, the first forming pass, the second forming pass and the third forming pass are sequentially arranged, and the rolling space inside the first forming pass, the second forming pass and the third forming pass is gradually reduced.
5. The right-angle bead steel forming system according to claim 4, wherein, The distance between the first driving roller and the second driving roller of the first forming pass is a first height distance, and the distance between the two driven rollers of the first forming pass is a first width distance; the distance between the first driving roller and the second driving roller of the second forming pass is a second height distance, and the distance between the two driven rollers of the second forming pass is a second width distance; the distance between the first driving roller and the second driving roller of the third forming pass is a third height distance, and the distance between the two driven rollers of the third forming pass is a third width distance; The first height spacing is greater than the second height spacing, which is greater than the third height spacing; the first width spacing is greater than the second width spacing, and the second width spacing is greater than the third width spacing.
6. The right-angle hemming section steel forming system according to claim 1 further comprising: and driving a guide pass, wherein the driving guide pass is positioned in front of the rolling forming pass along the proceeding direction of the curled section steel.
7. The right-angle bead profile steel forming system according to claim 6, further comprising: And the heating unit is arranged between the driving guide pass and the rolling forming pass and is used for heating the corner area of the curled section steel.
8. The right angle bead profile steel forming system of claim 7, further comprising: And the temperature measuring unit is positioned between the heating unit and the rolling forming pass.
9. The right angle bead profile steel forming system of claim 7, further comprising: and the cutting unit is positioned behind the rolling forming pass along the advancing direction of the curled section steel.
10. A method of forming a right angle hemmed section steel adapted for use in a right angle hemmed section steel forming system as claimed in any one of claims 1 to 9 comprising; Obtaining preformed curled section steel; Heating the corner of the curled section steel; Sequentially passing the heated curled section steel through a plurality of rolling forming passes, wherein a core mould is arranged in a rolling space inside the rolling forming passes, and the core mould supports the inner wall of the curled section steel; And along the advancing direction of the curled section steel, the rolling space in a plurality of rolling forming passes is gradually reduced.

Description

Right-angle curled section steel forming system and method Technical Field The application relates to the technical field of hot roll forming, in particular to a right-angle curled section steel forming system and method. Background The internal curled section steel is a key structural member in the fields of construction, automobiles and the like, the right angle forming precision is important. When the existing cold rolling process is used for processing high-strength steel, corners are difficult to form due to large material rebound and poor plasticity, tube wall collapse and section distortion are easy to occur, and the product quality is severely restricted. However, these methods are passive compensation, cannot actively restrict the material flow in the forming process, have limited effect on high-strength materials and right-angle forming, and still have unsatisfactory precision and stability of the finished product. Disclosure of Invention The embodiment of the application provides a system and a method for forming right-angle curled section steel. In a first aspect, the present application provides a right angle hemming section steel forming system comprising at least one roll forming pass; The roll forming pass comprises a first driving roller, a second driving roller and two driven rollers; the first driving roller and the second driving roller are arranged at intervals and in parallel, and the two driven rollers are arranged at intervals and in parallel, and the first driving roller and the second driving roller are arranged between the two driven rollers so as to form a rolling space in a surrounding manner; The mandrel is fixedly arranged in the rolling space, and the mandrel, the first driving roller, the second driving roller and the two driven rollers are all arranged at intervals to form a rolling channel for the curled section steel to pass through; the mandrel is used for forming rigid support on the inner wall of the curled section steel, and is used for cooperatively applying extrusion with the first driving roller, the second driving roller and the two driven rollers so as to guide the curled section steel to be filled into the target contour area of the rolling channel, and further enable the curled section steel to form a preset section contour. In some embodiments, the first drive roller, the second drive roller, and the two driven rollers collectively enclose a rolling space having a rectangular cross section; The outer peripheral side surface of the core mold is respectively arranged in parallel with the axes of the corresponding first driving roller, second driving roller and two driven rollers, so that a rolling channel with a rectangular frame-shaped cross section is formed; the right angle profile area of the roll channel constitutes the target profile area. In some embodiments, the outer peripheral side of the core mold is provided with a connecting portion for fixedly connecting with the bracket of the driven roller, and the connecting portion is provided corresponding to the opening side of the hemmed section steel. In some embodiments, the at least one roll forming pass includes a first forming pass, a second forming pass, and a third forming pass; Along the advancing direction of the rolled section steel, the first forming pass, the second forming pass and the third forming pass are sequentially arranged, and rolling spaces inside the first forming pass, the second forming pass and the third forming pass are gradually reduced. In some embodiments, the spacing between the first drive roller and the second drive roller of the first forming pass is a first height spacing, and the spacing between the two driven rollers of the first forming pass is a first width spacing; the distance between the first driving roller and the second driving roller of the second forming pass is a second height distance, and the distance between the two driven rollers of the second forming pass is a second width distance; The distance between the first driving roller and the second driving roller of the third forming pass is a third height distance, and the distance between the two driven rollers of the third forming pass is a third width distance; The first height spacing is greater than the second height spacing, which is greater than the third height spacing; The first width spacing is greater than the second width spacing, and the second width spacing is greater than the third width spacing. In some embodiments, a drive-guide pass is also included, the drive-guide pass being located before the roll forming pass in the direction of progress of the rolled section steel. In some embodiments, a heating unit is further included, the heating unit being disposed between the drive-guide pass and the roll forming pass for heating the corner region of the curled steel. In some embodiments, a temperature measurement unit is also included, the temperature measurement unit being located between the heati