CN107413895B - Angle steel straightening device and process method - Google Patents
Angle steel straightening device and process method Download PDFInfo
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- CN107413895B CN107413895B CN201710643644.6A CN201710643644A CN107413895B CN 107413895 B CN107413895 B CN 107413895B CN 201710643644 A CN201710643644 A CN 201710643644A CN 107413895 B CN107413895 B CN 107413895B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
- B21D3/05—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers arranged on axes rectangular to the path of the work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The invention relates to the technical field of hot-rolled angle steel straightening equipment, in particular to an angle steel straightening device and a process method. The angle steel straightening device comprises a cold straightening machine and a hot straightening machine, wherein the hot straightening machine comprises a base, a hot straightening box and a guide opening at the inlet end of a rolling mill; the base comprises a roller way installation square box, an installation support and a box slide support, wherein the box slide support is provided with a horizontal adjusting piece and a height adjusting mechanism; the hot straightening box comprises a box body, an upper roller frame, an upper straightening roller and a lower straightening roller; the upper roller frame is provided with a roller frame supporting rod spring adjusting mechanism, the box body is provided with a rotating shaft, and the box body and the upper roller frame are provided with cooling water inlets; the lower straightening roller is provided with an adjusting disc. The angle steel straightening device and the process method adopt the process method of primary hot straightening of the hot straightening device, natural cooling of the hot straightening device and secondary cold straightening of the cold straightening device, and have the advantages of simple process, reduction of the bending incidence rate of the head of the angle steel, and improvement of the angle steel straightening efficiency, quality and yield index of the angle steel.
Description
Field of the art
The invention relates to the technical field of hot-rolled angle steel straightening equipment, in particular to an angle steel straightening device and a process method.
(II) background art
When steel enterprises in China produce angle steels, a process method of straightening the angle steels by a multi-roller straightener is adopted, and the head of the finished angle steel is easy to bend left and right and/or bend up and down when rolled out due to the reasons of improper adjustment of a rolling mill and a guide device, low material size control precision and the like, so that the subsequent Leng Jiaozhi force is increased, and the requirement on higher performance of the straightener is increased; in addition, after the finished angle steel is rolled out, bending is easy to cause pile steel fault hidden trouble, after the finished angle steel is put on a cooling bed, bending is easy to be further increased, when serious, problems such as steel turning are easy to be caused, and a straightening dead zone exists in the straightener, so that the angle steel cannot be completely straightened after the head of the angle steel is bent, and therefore, in order to ensure that the quality of a product accords with standard regulation, all bent parts of the angle steel are required to be sawed off in the follow-up sawing process, but the processing can cause the reduction of the index of the yield of the angle steel.
(III) summary of the invention
The invention provides the angle steel straightening device and the process method which are scientific, reasonable, convenient and practical in structure, and adopts the process method of primary hot straightening of the hot straightening device, natural cooling of the cooling bed and secondary cold straightening of the cold straightening device, so that the invention has the advantages of simple process, reduction of the bending incidence rate of the angle steel head, improvement of the angle steel straightening efficiency, quality and angle steel yield index, and solves the problems in the prior art.
The invention is realized by the following technical scheme:
the angle steel straightening device comprises a cold straightening machine connected with a cooling bed, wherein a hot straightening machine is arranged between the cooling bed and an external rolling mill, the hot straightening machine comprises a base, and a hot straightening box is arranged on the base; an inlet end guide opening of the rolling mill is arranged at the inlet end of the hot straightening box;
the base comprises a roller way installation square box, and an installation bracket is arranged in the roller way installation square box; a box slide seat support is arranged on the inner side of the mounting support in a sliding manner, a horizontal adjusting piece is arranged between two opposite inner side walls of the box slide seat support, and a height adjusting mechanism which is connected with the mounting support in a sliding manner up and down is arranged on the box slide seat support;
the hot straightening box comprises a box body arranged on a box slide seat, an upper roller frame is arranged on the box body, two upper straightening rollers perpendicular to the conveying direction of angle steel are arranged on the upper roller frame, and two lower straightening rollers parallel to the upper straightening rollers are arranged in the box body below the upper straightening rollers; two ends of the upper roller frame are respectively provided with a roller frame supporting rod spring adjusting mechanism connected with the box body, two opposite side walls of the box body are respectively provided with two rotating shafts, each rotating shaft penetrates through the side wall of the box body to be in butt joint with the outer side wall of the upper roller frame, a rotating shaft adjusting nut is arranged on the rotating shaft at the outer side of the box body, and a plurality of cooling water inlets connected with an external straightening roller cooling water pipe are respectively arranged on the side wall of the box body and the side wall of the upper roller frame; one end of the lower straightening roller is provided with an adjusting disc connected with the lower straightening roller through a set screw.
The roller frame supporting rod spring adjusting mechanism comprises two opposite roller frame supporting rods arranged at the top end of the box body, the roller frame supporting rods penetrate out of the top surface of the upper roller frame to be arranged, buffer springs are sleeved on the roller frame supporting rods between the upper roller frame and the box body, and roller frame spring adjusting nuts are arranged on the roller frame supporting rods above the upper roller frame.
The two upper straightening rollers and the two lower straightening rollers are arranged in a vertically staggered mode to form two straightening triangular areas in opposite directions.
The horizontal adjusting piece comprises a horizontal adjusting screw rod, a nut seat is arranged on the horizontal adjusting screw rod, and a box body sliding seat is fixedly arranged on the nut seat.
The height adjusting mechanism comprises height adjusting holes which are oppositely formed in two side walls of the box body sliding seat support, adjusting screws are arranged in the height adjusting holes, and the adjusting screws penetrate through the height adjusting holes to be abutted to the two side walls of the mounting support.
And a graduated scale is arranged on the side wall of the box body sliding seat support at the outer side of the height adjusting hole.
The height adjusting mechanism adjusts the vertical position of the sliding seat by +/-50 mm, and the horizontal adjusting piece adjusts the horizontal position of the sliding seat by +/-100 mm.
The axial distance of the lower straightening roller is regulated by the regulating disc on the lower straightening roller, and the axial regulating distance of the lower straightening roller is +/-10 mm.
A process method for straightening angle steel comprises the following steps:
s1, adjusting the position of a hot straightening machine to enable an angle steel rolling line to be aligned with the central axis of a guide opening of a rolling mill inlet end of a hot straightening box, then directly conveying rolled angle steel to the guide opening of the rolling mill inlet end on the hot straightening box of the angle steel straightening device, enabling the temperature of the angle steel to be 950-1100 ℃, and enabling the angle steel to enter the hot straightening box under the driving of an external finished product rolling mill to perform passive hot straightening treatment;
s2, conveying the angle steel subjected to the passive hot straightening treatment in the step 1 to an external cooling bed and naturally cooling to below 80 ℃;
and S3, conveying the angle steel cooled in the step 2 into a cold straightening machine for cold straightening, and thus finishing the straightening of the angle steel.
The passive hot straightening treatment process in the step 1 specifically comprises the following steps: when the angle steel is conveyed to a guide opening at the inlet end of the rolling mill, circulating cooling water in a workshop is started, so that water of a cooling water pipe of the straightening roller enters the hot straightening box through a cooling water inlet, the cooling water is continuously sprayed out of the upper straightening roller and the lower straightening roller through water spraying holes in the hot straightening box, the water pressure of the cooling water is 0.3-0.8Mpa, and the temperatures of the upper straightening roller and the lower straightening roller are continuously reduced; in the passive thermal straightening process of the angle steel, the position of the thermal straightening machine is finely adjusted according to the position of the angle steel, so that the angle steel can be subjected to passive thermal straightening smoothly.
The beneficial effects of the invention are as follows: the angle steel straightening device and the process method are scientific and reasonable in structure, convenient and practical, under the condition that the surface quality of a finished product is not affected, the upper side, the lower side, the left side and the right side of the head of the rolled angle steel are bent, the angle steel with the temperature of 950-1100 ℃ is subjected to passive hot straightening, the head bending generated by the rolled angle steel is primarily and effectively straightened by utilizing the characteristic of low deformation resistance of high Wen Jiaogang, the equiangular steel is cooled to below 80 ℃ through a cooling bed, and then the cold straightening machine is used for active straightening, so that the fault hidden trouble of stacking steel caused by bending of the head of the angle steel can be effectively reduced, the state of the cooling bed on the angle steel is improved, and meanwhile, the cold straightening pressure of the cold straightening machine is relieved; the vertical position of the sliding seat is adjusted by a height adjusting mechanism on the base, and the horizontal position of the sliding seat is adjusted by a horizontal adjusting screw rod on the base; two upper straightening rollers capable of being axially adjusted on the box body finely adjust the axial distance of the upper roller frame by adjusting the rotating shaft, so that the axial distance of the upper straightening rollers is adjusted; two lower straightening rollers capable of being axially adjusted on the box body are adjusted in axial distance by adjusting an adjusting disc which is arranged at one end of the lower straightening rollers and is connected with the lower straightening rollers through a set screw; the roller frame supporting rod spring adjusting mechanism can adjust the vertical height of the upper straightening roller, adjust the deformation of the buffer spring and adjust the gap between the upper straightening roller and the lower straightening roller.
(IV) description of the drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a base structure according to the present invention;
FIG. 3 is a schematic view of a partial cross-sectional structure of the leveling screw of FIG. 2;
FIG. 4 is a schematic view of the structure of the hot straightening box according to the invention;
fig. 5 is a schematic diagram of the left-hand structure of fig. 4.
In the figure, a box body 1, a rolling mill inlet end guide port 2, a roller way installation square box, a 4 installation support, a 5 adjusting screw, a 6 box slide support, a 7 horizontal adjusting screw rod, an 8 nut seat, a 9 box slide, a 10 height adjusting hole, a 11 graduated scale, a 12 upper roller frame, a 13 upper straightening roller, a 14 lower straightening roller, a 15 rotating shaft, a 16 rotating shaft adjusting nut, a 17 cooling water inlet, a 18 set screw, a 19 adjusting disc, a 20 roller frame supporting rod, a 21 buffer spring and a 22 roller frame spring adjusting nut.
(fifth) detailed description of the invention
In order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below with reference to the following detailed description and the accompanying drawings.
As shown in fig. 1 to 5, the angle iron straightening device comprises a cold straightening machine connected with a cooling bed, a hot straightening machine is arranged between the cooling bed and an external rolling mill, the hot straightening machine comprises a base, and a hot straightening box is arranged on the base; an inlet end guide port 2 of the rolling mill is arranged at the inlet end of the hot straightening box;
the base comprises a roller way installation square box 3, and an installation bracket 4 is arranged in the roller way installation square box 3; a box slide seat support 6 is arranged on the inner side of the mounting support 4 in a sliding manner, a horizontal adjusting piece is arranged between two opposite inner side walls of the box slide seat support 6, and a height adjusting mechanism which is connected with the mounting support 4 in a sliding manner up and down is arranged on the box slide seat support 6;
the hot straightening box comprises a box body 1 arranged on a box slide seat 9, an upper roller frame 12 is arranged on the box body 1, two upper straightening rollers 13 are arranged on the upper roller frame 12, and two lower straightening rollers 14 are arranged in the box body 1 below the upper straightening rollers 13; two ends of the upper roller frame 12 are respectively provided with a roller frame supporting rod spring adjusting mechanism connected with the box body, two opposite side walls of the box body 1 are respectively provided with two rotating shafts 15, each rotating shaft 15 passes through the side wall of the box body 1 to be in butt joint with the outer side wall of the upper roller frame 12, a rotating shaft adjusting nut 16 is arranged on the rotating shaft 15 at the outer side of the box body 1, and a plurality of cooling water inlets 17 connected with an external straightening roller cooling water pipe are respectively arranged on the side wall of the box body 1 and the side wall of the upper roller frame 12; at one end of the lower straightening roll 14 an adjusting disk 19 is provided which is connected by means of a set screw 18.
The roller frame support rod spring adjusting mechanism comprises two roller frame support rods 20 which are oppositely arranged at the top end of the box body 1, wherein the roller frame support rods 20 penetrate out of the top surface of the upper roller frame 12, buffer springs 21 are sleeved on the roller frame support rods 20 between the upper roller frame 12 and the box body 1, and roller frame spring adjusting nuts 22 are arranged on the roller frame support rods 20 above the upper roller frame 12.
The two upper straightening rollers 13 and the two lower straightening rollers 14 are arranged in a staggered manner up and down to form two straightening triangular areas in opposite directions.
The horizontal adjusting piece comprises a horizontal adjusting screw rod 7, a nut seat 8 is arranged on the horizontal adjusting screw rod 7, a box sliding seat 9 is fixedly arranged on the nut seat 8, a dovetail groove is arranged on the box sliding seat 9, and the box base is abutted with the dovetail groove and is pressed by a pressing plate.
The height adjusting mechanism comprises height adjusting holes 10 which are oppositely formed in two side walls of the box body sliding seat support 6, adjusting screws 5 are arranged in the height adjusting holes 10, and the adjusting screws 5 penetrate through the height adjusting holes 10 to be abutted to two side walls of the mounting support 4.
A graduated scale 11 is arranged on the side wall of the box body sliding seat bracket 6 outside the height adjusting hole 10.
The height adjusting mechanism adjusts the vertical position of the sliding seat by 25mm, and the horizontal adjusting screw rod 7 adjusts the horizontal position of the sliding seat by 50mm.
An adjusting disc 19 on the lower straightening roll 14 adjusts the axial distance of the lower straightening roll 14, and the axial adjusting distance of the lower straightening roll 14 is 5mm.
The axial distance of the upper straightening roller 13 is finely adjusted by a rotating shaft adjusting nut 16 at one end of the rotating shaft 15, and the axial adjusting distance of the upper straightening roller 13 is 5mm.
The angle steel straightening process method comprises the following steps:
s1, adjusting the position of a hot straightening machine to enable an angle steel rolling line to be aligned with the central axis of a guide opening of a rolling mill inlet end of a hot straightening box, then directly conveying rolled angle steel to the guide opening of the rolling mill inlet end on the hot straightening box of the angle steel straightening device, enabling the temperature of the angle steel to be 1000 ℃, and enabling the angle steel to enter the hot straightening box under the driving of an external finished product rolling mill to perform passive hot straightening treatment;
s2, conveying the angle steel subjected to the passive hot straightening treatment in the step 1 to an external cooling bed and naturally cooling to below 80 ℃;
and S3, conveying the angle steel cooled in the step 2 into a cold straightening machine for cold straightening, and thus finishing the straightening of the angle steel.
The passive hot straightening treatment process in the step 1 specifically comprises the following steps: when the angle steel is conveyed to a guide opening at the inlet end of the rolling mill, circulating cooling water in a workshop is started, so that water in a cooling water pipe of the straightening roller enters the hot straightening box through a cooling water inlet, the cooling water is continuously sprayed out of the upper straightening roller and the lower straightening roller through water spraying holes in the hot straightening box, the water pressure of the cooling water is 0.5Mpa, and the temperatures of the upper straightening roller and the lower straightening roller are continuously reduced; the position of the thermal straightening machine is finely adjusted according to the position of the angle steel, so that the angle steel can be successfully subjected to passive thermal straightening treatment.
The specific operation process is as follows:
s1 angle steel rolling line and rolling mill inlet end guiding port 2 position adjustment
The vertical position of the box slide 9 is adjusted by a height adjusting mechanism on the adjusting base, in particular to a manual adjusting screw 5, the height of the box slide bracket 6 is adjusted in an auxiliary way through graduated scales 11 at two sides of a height adjusting hole 10, and the box slide bracket 6 rises or descends to drive the box slide 9 connected with the box slide bracket 6, so that the box slide 9 is vertically adjusted; the horizontal position of the box body sliding seat 9 is adjusted by adjusting the horizontal adjusting screw rod 7, and a nut seat 8 in the horizontal adjusting screw rod 7 slides to drive the box body sliding seat 9 to slide, so that the box body sliding seat 9 is horizontally adjusted; the position of the box sliding seat 9 is determined by adjusting the horizontal position and the vertical height of the box sliding seat 9;
s2, gap adjustment of upper straightening roller 13 and lower straightening roller 14
The vertical height of the upper straightening roller 13 is adjusted through a roller frame supporting rod 20 spring adjusting mechanism, specifically, a roller frame spring adjusting nut 22 on the roller frame supporting rod 20 is manually adjusted, the deformation of a buffer spring 21 is adjusted, and the gap between the upper straightening roller 13 and the lower straightening roller 14 is adjusted;
s3, adjusting axial distance of lower straightening roller 14 and upper straightening roller 13
After the axial position of the box body sliding seat 9 is fixed, loosening a set screw 18, adjusting an axial distance of the lower straightening roller 14 by adjusting an adjusting disc 19 on the lower straightening roller 14, then adjusting a rotating shaft adjusting nut 16 which rotates one end of a rotating shaft 15, and finely adjusting an axial distance of the upper straightening roller 13; the angle steel rolling line is aligned with the central axis of the guide port 2 at the inlet end of the rolling mill of the hot straightening box, and the central deviation is 1mm;
s4, after the position of the angle steel straightening device is adjusted, conveying the angle steel to a guide port 2 at the inlet end of the rolling mill, carrying out passive hot straightening on the angle steel, wherein the temperature of the angle steel is 1000 ℃, circulating cooling water in a workshop is started, so that water in a cooling water pipe of a straightening roller enters a hot straightening box through a cooling water inlet 17, the water in the cooling water pipe of the straightening roller is continuously sprayed out of an upper straightening roller 13 and a lower straightening roller 14 through the cooling water inlet 17, the water pressure of the cooling water is 0.5Mpa, the upper straightening roller 13 and the lower straightening roller 14 are prevented from being influenced by the angle steel with higher temperature, faults such as cracking of the straightening rollers, locking of bearings and the like are prevented, the service lives of the upper straightening roller 13 and the lower straightening roller 14 are prolonged, and the belt speed of the angle steel entering the hot straightening box is equal to the belt speed of an output roller way of an external finished rolling mill; in the process of passive hot straightening treatment of the angle steel, the gap position between the upper straightening roller 13 and the lower straightening roller 14 of the angle steel straightening device can be finely adjusted, and the axial distance between the lower straightening roller 14 and the upper straightening roller 13 is finely adjusted;
s5, conveying the angle steel subjected to the passive hot straightening treatment in the step 4 to an external cooling bed and naturally cooling to below 80 ℃;
and S6, conveying the angle steel cooled in the step 5 into a cold straightening machine for cold straightening, and thus finishing the straightening of the angle steel.
The length of the angle steel is 100m, and the time for passing through the hot straightening box is 100s.
The cooling water is workshop circulating water.
The box body sliding seat support is of a concave plate frame structure.
Taking the equal-sided angle steel of 140X10 produced by Q345B steel type of a certain test as an example, the bending degree of the head of the hot-rolled angle steel produced by the process is reduced from 5-6 per mill to 2 per mill, the failure rate caused by the elbow is reduced by 80%, the original straightening load of the cold straightening process is 400-450A, the load of the cold straightening process after the hot straightening process is 350-400A, and the unqualified length of the head of the angle steel after straightening is shortened by 1m.
Taking 200X20 equilateral angle steel produced by Q345B steel type of a certain test as an example, the bending degree of the head of the hot rolled angle steel produced by the process is reduced from 5-6 per mill to 3 per mill, the failure rate generated by the elbow is 0, the original straightening load of the cold straightening process is 400-450A, the load of the cold straightening process after the hot straightening process is 400-450A, the unqualified length of the head of the angle steel after straightening is shortened by 0.5m, and all the unqualified parts outside the straightening dead zone are realized.
The present invention is not described in detail in the present application, and is well known to those skilled in the art. Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (10)
1. The utility model provides an angle steel straightener, includes the cold straightener who links to each other with the cooling bed, characterized by: a thermal straightening machine is arranged between the cooling bed and the external rolling mill and comprises a base, and a thermal straightening box is arranged on the base; an inlet end guide opening of the rolling mill is arranged at the inlet end of the hot straightening box; the base comprises a roller way installation square box, and an installation bracket is arranged in the roller way installation square box; a box slide seat support is arranged on the inner side of the mounting support in a sliding manner, a horizontal adjusting piece is arranged between two opposite inner side walls of the box slide seat support, and a height adjusting mechanism which is connected with the mounting support in a sliding manner up and down is arranged on the box slide seat support; the hot straightening box comprises a box body arranged on a box slide seat, an upper roller frame is arranged on the box body, two upper straightening rollers perpendicular to the conveying direction of angle steel are arranged on the upper roller frame, and two lower straightening rollers parallel to the upper straightening rollers are arranged in the box body below the upper straightening rollers; two ends of the upper roller frame are respectively provided with a roller frame supporting rod spring adjusting mechanism connected with the box body, two opposite side walls of the box body are respectively provided with two rotating shafts, each rotating shaft penetrates through the side wall of the box body to be in butt joint with the outer side wall of the upper roller frame, a rotating shaft adjusting nut is arranged on the rotating shaft at the outer side of the box body, and a plurality of cooling water inlets connected with an external straightening roller cooling water pipe are respectively arranged on the side wall of the box body and the side wall of the upper roller frame; one end of the lower straightening roller is provided with an adjusting disc connected with the lower straightening roller through a set screw.
2. An angle iron straightener as set forth in claim 1, wherein: the roller frame supporting rod spring adjusting mechanism comprises two opposite roller frame supporting rods arranged at the top end of the box body, the roller frame supporting rods penetrate out of the top surface of the upper roller frame to be arranged, buffer springs are sleeved on the roller frame supporting rods between the upper roller frame and the box body, and roller frame spring adjusting nuts are arranged on the roller frame supporting rods above the upper roller frame.
3. An angle iron straightener as set forth in claim 1, wherein: the two upper straightening rollers and the two lower straightening rollers are arranged in a vertically staggered mode to form two straightening triangular areas in opposite directions.
4. An angle iron straightener as set forth in claim 1, wherein: the horizontal adjusting piece comprises a horizontal adjusting screw rod, a nut seat is arranged on the horizontal adjusting screw rod, and a box body sliding seat is fixedly arranged on the nut seat.
5. An angle iron straightener as set forth in claim 1, wherein: the height adjusting mechanism comprises height adjusting holes which are oppositely formed in two side walls of the box body sliding seat support, adjusting screws are arranged in the height adjusting holes, and the adjusting screws penetrate through the height adjusting holes to be abutted to the two side walls of the mounting support.
6. The angle iron straightener of claim 5, wherein: and a graduated scale is arranged on the side wall of the box body sliding seat support at the outer side of the height adjusting hole.
7. An angle iron straightener as set forth in claim 1, wherein: the height adjusting mechanism adjusts the vertical position of the sliding seat by +/-50 mm, and the horizontal adjusting piece adjusts the horizontal position of the sliding seat by +/-100 mm.
8. An angle iron straightener as set forth in claim 1, wherein: the axial distance of the lower straightening roller is regulated by the regulating disc on the lower straightening roller, and the axial regulating distance of the lower straightening roller is +/-10 mm.
9. A process for straightening angle steel using the angle steel straightening device as claimed in any one of claims 1 to 8, characterized by comprising the steps of:
s1, adjusting the position of a hot straightening machine to enable an angle steel rolling line to be aligned with the central axis of a guide opening of a rolling mill inlet end of a hot straightening box, then directly conveying rolled angle steel to the guide opening of the rolling mill inlet end on the hot straightening box of the angle steel straightening device, enabling the temperature of the angle steel to be 950-1100 ℃, and enabling the angle steel to enter the hot straightening box under the driving of an external finished product rolling mill to perform passive hot straightening treatment;
s2, conveying the angle steel subjected to the passive hot straightening treatment in the step 1 to an external cooling bed and naturally cooling to below 80 ℃;
and S3, conveying the angle steel cooled in the step 2 into a cold straightening machine for cold straightening, and thus finishing the straightening of the angle steel.
10. A process for straightening angle steel according to claim 9, characterized in that: the passive hot straightening treatment process in the step 1 specifically comprises the following steps: when the angle steel is conveyed to a guide opening at the inlet end of the rolling mill, circulating cooling water in a workshop is started, so that water of a cooling water pipe of the straightening roller enters the hot straightening box through a cooling water inlet, the cooling water is continuously sprayed out of the upper straightening roller and the lower straightening roller through water spraying holes in the hot straightening box, the water pressure of the cooling water is 0.3-0.8Mpa, and the temperatures of the upper straightening roller and the lower straightening roller are continuously reduced; in the passive thermal straightening process of the angle steel, the position of the thermal straightening machine is finely adjusted according to the position of the angle steel, so that the angle steel can be subjected to passive thermal straightening smoothly.
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| CN201710643644.6A CN107413895B (en) | 2017-07-31 | 2017-07-31 | Angle steel straightening device and process method |
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| CN201710643644.6A CN107413895B (en) | 2017-07-31 | 2017-07-31 | Angle steel straightening device and process method |
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| CN112453116A (en) * | 2020-11-12 | 2021-03-09 | 安阳钢铁股份有限公司 | High-temperature straightening method for channel steel |
| CN113953353A (en) * | 2021-10-28 | 2022-01-21 | Dig自动化工程（武汉）有限公司 | Multi-roller straightening equipment for straightening rib profile of ship body |
| CN114367557B (en) * | 2021-12-26 | 2024-02-02 | 江苏士美机电装备有限公司 | Shaped steel straightening production cleaning equipment convenient to adjust straightening scope |
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