CN103143562A - Technological method for symmetrical paired universal rolling of deformed steel - Google Patents
Technological method for symmetrical paired universal rolling of deformed steel Download PDFInfo
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- CN103143562A CN103143562A CN2013101147704A CN201310114770A CN103143562A CN 103143562 A CN103143562 A CN 103143562A CN 2013101147704 A CN2013101147704 A CN 2013101147704A CN 201310114770 A CN201310114770 A CN 201310114770A CN 103143562 A CN103143562 A CN 103143562A
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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
The present invention relates to a kind of metal rolled method, be specifically related to the process that a kind of deformed steel is symmetrically two universal rollings.
Background technology
Shaped steel is a kind of sizable vertical bar shape of ratio steel with definite section configuration and length and perimeter of section, is widely used in the industries such as building, traffic, bridge, boats and ships, electric power, machinery.Due to its special cross section, its rolling method for producing is more complicated also, and difficulty is high, and milling method mainly comprises common two rolling method for makings and four roller universal rolling methods.The shaped steel of particular types, specific standard all needs specific roll and pass to complete original blank and arrives the rolling of final finished section.
Can be rolled production it by four roller universal rolling methods except products such as rail, H shaped steel, I-steel at present, all the other all need by common two single rolling productions of rolling method for making as products such as L-type steel, flat-bulb steel, angle steel (equilateral or inequilateral).
When the products such as the single rolling flat-bulb steel of two rollers, L-type steel, angle steel, due to inhomogeneous deformation in two roll pass, make that to roll rear rolled piece internal stress larger; Because extending, rolled piece section in pass distributes the uneven rolling defects such as " ears or side handles of a utensil ", " folding " that easily form in the operation of rolling.And what perplex at present all shaped steel manufacturing enterprise is or asymmetric section profiled bar symmetrical due to flat-bulb steel, L-type steel, angle steel etc., cause that owing to rolling rear rolled piece section temperature skewness rolled piece is crooked in cooling rear generation total length, and then make the more difficult section straightener that even can not enter of shaped steel after bending align, thereby have a strong impact on the shaped steel product at the rhythm of production of the operations such as follow-up aligning, sawing.
Normally produce for realizing the products such as flat-bulb steel, L-type steel, both at home and abroad shaped steel enterprise all adopts the short chi production technology of " short chi is cooling, short chi aligning, short chi sawing ", namely after finish to gauge, the hot rolled piece sawing of total length is become some sections, reduce the cooled bending amplitude of rolled piece by the mode that reduces hot length of rolled piece, and then can enter aligning and subsequent handling.
The short chi production technology of this kind becomes to carry out after short chi with the sawing of total length rolled piece the production drawback that follow-up cold worked method brings again to be had:
1) the sawing operation increase of the sawing facilities such as the hot saw after finish to gauge or hot shears, saw blade and energy consumption increase;
2) on cold bed, short chi rolled piece is many, the cold bed control program complicated, the production management cost increases;
3) the aligning number of times increases, rhythm of production is slack-off, the head of aligning rolled piece/tail blind area increase;
4) crop of cold saw scale sawing/tail number of times increases, saw blade consumption is large, the saw blade cost is high;
5) the product lumber recovery reduces, the production and administration cost increases, the market competitiveness is low.
Summary of the invention
In view of this, the purpose of this invention is to provide the process that a kind of deformed steel is symmetrically two universal rollings, solved the cooling buckling phenomenon that the cooling condition difference causes after single shape steel rolling, improve the surface quality after the rolling of sectional iron, improved internal stress, reduce production cost, improved operating efficiency.
The invention discloses the process that a kind of deformed steel is symmetrically two universal rollings, comprise the following steps:
1) original blank roughing in the roughing unit is made the middle blank of double joint disjunctor rolled piece;
2) cut the head-tail of the middle blank irregular deformation of facility excision by saw;
3) in the middle of, blank double joint disjunctor in the finish rolling unit carries out universal rolling simultaneously, and double joint disjunctor finished section section bar is made in finish rolling;
4) section bar that is rolled into double joint disjunctor finished section is cooled to room temperature, double joint disjunctor finished section section bar subdivision and aligning is obtained the section bar product of single finished section by subdivision, aligning facility.
Further, in described step 1), original blank is made the middle blank of double joint disjunctor rolled piece in roughing unit two roller edging mills or any one milling train roughing of four-roll universal rolling machine.
Further, in described step 3), middle blank is made double joint disjunctor finished section section bar through universal mill and two roller edging mill finish rolling in the finish rolling unit.
Further, in described step 1), original blank employing face symmetry or axial symmery shape in the roughing unit are rolled.
Further, in described step 3), middle blank employing face symmetry or axial symmery shape in the finish rolling unit are rolled.
Further, in described step 5), the section bar of double joint disjunctor finished section first is split into single rolled piece through the subdivision facility, then aligns simultaneously two single rolled pieces by the aligning facility.
Further, in described step 5), the section bar of double joint disjunctor finished section first through aligning facility aligning section bar, then is split into two single rolled pieces by the subdivision facility.
Beneficial effect of the present invention is: the process that deformed steel of the present invention is symmetrically two universal rollings has the following advantages:
1) employing is symmetrically two universal rolling techniques, and cooling rear buckling problem when having solved present single rolling deformed steel has reduced single profile shapes production due to inhomogeneous, the asymmetric fault in production rate of bringing of distortion.
2) whole production line is realized " long chi production " technology of deformed steel " long chi is rolling, long chi is cooling, long chi aligning ", optimized roll line production, improved lumber recovery, reduced energy consumption, equipment loss and production cost, improved production efficiency.
3) employing is symmetrically two universal rolling techniques, four rollers by universal mill are processed simultaneously to four faces of shaped steel, rolling load is little, axial force and axial motion is little, machining accuracy is high, surface quality is good, the rolled piece internal stress is little, the comprehensive process quality and mechanical property good.
4) applied range is applicable to multiple deformed steel products such as flat-bulb steel, L-type steel, angle steel, asymmetric angle steel, T-steels.
Description of drawings
For the purpose, technical scheme and the advantage that make invention is clearer, the present invention is described in further detail below in conjunction with accompanying drawing, wherein:
Fig. 1 is the rolling schematic diagram of the symmetrical form of four-roll universal rolling machine face of the present invention;
Fig. 2 is the two rolling schematic diagrames of rolling limit machine side symmetric form of the present invention;
Fig. 3 is the rolling schematic diagram of four-roll universal rolling machine axial symmery shape of the present invention;
Fig. 4 is the two rolling schematic diagrames of rolling limit arbor symmetric form of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Embodiment 1
As depicted in figs. 1 and 2, deformed steel of the present invention is symmetrically the process of two universal rollings, comprises the following steps:
1) adopt the symmetrical form roughing of face to make the middle blank of double joint disjunctor rolled piece through two roller edging mills in the roughing unit original blank;
2) cut the head-tail of the middle blank irregular deformation of facility excision by saw;
3) in the middle of, blank adopts the symmetrical form double joint of face disjunctor to carry out simultaneously universal rolling through universal mill and two roller edging mills in the finish rolling unit, and double joint disjunctor finished section section bar is made in finish rolling;
4) section bar that is rolled into double joint disjunctor finished section is cooled to room temperature, first is split into single rolled piece through the subdivision facility, then aligns simultaneously two single rolled pieces by the aligning facility, obtains the section bar product of single finished section.
Embodiment 2
As depicted in figs. 1 and 2, deformed steel of the present invention is symmetrically the process of two universal rollings, comprises the following steps:
1) adopt the symmetrical form roughing of face to make the middle blank of double joint disjunctor rolled piece through four-roll universal rolling machine in the roughing unit original blank;
2) cut the head-tail of the middle blank irregular deformation of facility excision by saw;
3) in the middle of, blank adopts the symmetrical form double joint of face disjunctor to carry out simultaneously universal rolling through universal mill and two roller edging mills in the finish rolling unit, and double joint disjunctor finished section section bar is made in finish rolling;
4) section bar that is rolled into double joint disjunctor finished section is cooled to room temperature, first through aligning facility aligning section bar, then is split into two single rolled pieces by the subdivision facility, obtains the section bar product of single finished section.
Embodiment 3
As shown in Figure 3 and Figure 4, deformed steel of the present invention is symmetrically the process of two universal rollings, comprises the following steps:
1) adopt the axial symmery shape roughing to make the middle blank of double joint disjunctor rolled piece through two roller edging mills in the roughing unit original blank;
2) cut the head-tail of the middle blank irregular deformation of facility excision by saw;
3) in the middle of, blank adopts axial symmery shape double joint disjunctor to carry out simultaneously universal rolling through universal mill and two roller edging mills in the finish rolling unit, and double joint disjunctor finished section section bar is made in finish rolling;
4) section bar that is rolled into double joint disjunctor finished section is cooled to room temperature, first is split into single rolled piece through the subdivision facility, then aligns simultaneously two single rolled pieces by the aligning facility, obtains the section bar product of single finished section.
Embodiment 4
As shown in Figure 3 and Figure 4, deformed steel of the present invention is symmetrically the process of two universal rollings, comprises the following steps:
1) adopt the axial symmery shape roughing to make the middle blank of double joint disjunctor rolled piece through four-roll universal rolling machine in the roughing unit original blank;
2) cut the head-tail of the middle blank irregular deformation of facility excision by saw;
3) in the middle of, blank adopts axial symmery shape double joint disjunctor to carry out simultaneously universal rolling through universal mill and two roller edging mills in the finish rolling unit, and double joint disjunctor finished section section bar is made in finish rolling;
4) section bar that is rolled into double joint disjunctor finished section is cooled to room temperature, first through aligning facility aligning section bar, then is split into two single rolled pieces by the subdivision facility, obtains the section bar product of single finished section.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although by invention has been described with reference to the preferred embodiments of the present invention, but those of ordinary skill in the art is to be understood that, can make various changes to it in the form and details, and not depart from the spirit and scope of the present invention that appended claims limits.
Claims (7)
1. a deformed steel is symmetrically the process of two universal rollings, it is characterized in that: comprise the following steps:
1) original blank roughing in the roughing unit is made the middle blank of double joint disjunctor rolled piece;
2) cut the head-tail of the middle blank irregular deformation of facility excision by saw;
3) in the middle of, blank double joint disjunctor in the finish rolling unit carries out universal rolling simultaneously, and double joint disjunctor finished section section bar is made in finish rolling;
4) section bar that is rolled into double joint disjunctor finished section is cooled to room temperature, double joint disjunctor finished section section bar subdivision and aligning is obtained the section bar product of single finished section by subdivision, aligning facility.
2. deformed steel according to claim 1 is symmetrically the process of two universal rollings, it is characterized in that: in described step 1), original blank is made the middle blank of double joint disjunctor rolled piece in roughing unit two roller edging mills or any one milling train roughing of four-roll universal rolling machine.
3. deformed steel according to claim 1 is symmetrically the process of two universal rollings, it is characterized in that: in described step 3), middle blank is made double joint disjunctor finished section section bar through universal mill and two roller edging mill finish rolling in the finish rolling unit.
4. deformed steel according to claim 1 is symmetrically the process of two universal rollings, it is characterized in that: in described step 1), original blank employing face symmetry or axial symmery shape in the roughing unit are rolled.
5. deformed steel according to claim 1 is symmetrically the process of two universal rollings, it is characterized in that: in described step 3), middle blank employing face symmetry or axial symmery shape in the finish rolling unit are rolled.
6. deformed steel according to claim 1 is symmetrically the process of two universal rollings, it is characterized in that: in described step 5), the section bar of double joint disjunctor finished section first is split into single rolled piece through the subdivision facility, then aligns simultaneously two single rolled pieces by the aligning facility.
7. deformed steel according to claim 1 is symmetrically the process of two universal rollings, it is characterized in that: in described step 5), the section bar of double joint disjunctor finished section first through aligning facility aligning section bar, then is split into two single rolled pieces by the subdivision facility.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103350114A (en) * | 2013-07-19 | 2013-10-16 | 莱芜钢铁集团有限公司 | Double-pass roller for machining track shape steel and rolling method |
| CN103357663A (en) * | 2013-07-19 | 2013-10-23 | 莱芜钢铁集团有限公司 | F-shaped steel mill roll double-hole type and rolling method |
| CN103386416A (en) * | 2013-07-24 | 2013-11-13 | 钱奕峰 | Method for processing profiled bar with asymmetrical cross section |
| CN103406355A (en) * | 2013-07-19 | 2013-11-27 | 莱芜钢铁集团有限公司 | F-shaped steel roll pass and rolling method |
| CN104148381A (en) * | 2014-07-07 | 2014-11-19 | 常州东方特钢有限公司 | Symmetric rolling technology for T-shaped elevator guide rail steel |
| CN105583631A (en) * | 2016-02-29 | 2016-05-18 | 中冶华天工程技术有限公司 | Finishing device and method for producing elevator guide rails in pairs through online continuous dividing, continuous straightening and continuous sawing |
| CN107617640A (en) * | 2015-12-09 | 2018-01-23 | 日照钢铁控股集团有限公司 | A kind of high-strength marine shaped steel is heat-treated rolling mill practice |
| CN107803401A (en) * | 2017-11-14 | 2018-03-16 | 山东钢铁股份有限公司 | The rolling device and milling method of a kind of flat-bulb steel |
| CN107824613A (en) * | 2017-11-14 | 2018-03-23 | 山东钢铁股份有限公司 | The universal rolling device and milling method of a kind of flat-bulb steel |
| CN109707987A (en) * | 2019-01-30 | 2019-05-03 | 山东钢铁股份有限公司 | New type section joist deformed steel and its production method and process units |
| CN113953316A (en) * | 2021-09-27 | 2022-01-21 | 包头钢铁（集团）有限责任公司 | Rolling method for rolling 310Z-shaped steel by using flat billet with thickness of less than 110mm |
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| JPS6411001A (en) * | 1987-07-06 | 1989-01-13 | Nippon Steel Corp | Method for rolling and separating shape steel |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103350114A (en) * | 2013-07-19 | 2013-10-16 | 莱芜钢铁集团有限公司 | Double-pass roller for machining track shape steel and rolling method |
| CN103357663A (en) * | 2013-07-19 | 2013-10-23 | 莱芜钢铁集团有限公司 | F-shaped steel mill roll double-hole type and rolling method |
| CN103406355A (en) * | 2013-07-19 | 2013-11-27 | 莱芜钢铁集团有限公司 | F-shaped steel roll pass and rolling method |
| CN103406355B (en) * | 2013-07-19 | 2016-01-20 | 莱芜钢铁集团有限公司 | A kind of F shaped roll pass and milling method |
| CN103357663B (en) * | 2013-07-19 | 2016-04-20 | 莱芜钢铁集团有限公司 | F shaped roll diapsid and milling method |
| CN103386416A (en) * | 2013-07-24 | 2013-11-13 | 钱奕峰 | Method for processing profiled bar with asymmetrical cross section |
| CN104148381A (en) * | 2014-07-07 | 2014-11-19 | 常州东方特钢有限公司 | Symmetric rolling technology for T-shaped elevator guide rail steel |
| CN107617640A (en) * | 2015-12-09 | 2018-01-23 | 日照钢铁控股集团有限公司 | A kind of high-strength marine shaped steel is heat-treated rolling mill practice |
| CN107617640B (en) * | 2015-12-09 | 2020-03-20 | 日照钢铁控股集团有限公司 | High-strength marine section steel heat treatment rolling process |
| CN105583631A (en) * | 2016-02-29 | 2016-05-18 | 中冶华天工程技术有限公司 | Finishing device and method for producing elevator guide rails in pairs through online continuous dividing, continuous straightening and continuous sawing |
| CN107803401A (en) * | 2017-11-14 | 2018-03-16 | 山东钢铁股份有限公司 | The rolling device and milling method of a kind of flat-bulb steel |
| CN107824613A (en) * | 2017-11-14 | 2018-03-23 | 山东钢铁股份有限公司 | The universal rolling device and milling method of a kind of flat-bulb steel |
| CN107803401B (en) * | 2017-11-14 | 2024-03-08 | 山东钢铁股份有限公司 | Flat-bulb steel rolling device and rolling method |
| CN109707987A (en) * | 2019-01-30 | 2019-05-03 | 山东钢铁股份有限公司 | New type section joist deformed steel and its production method and process units |
| CN109707987B (en) * | 2019-01-30 | 2024-03-26 | 山东钢铁股份有限公司 | Section joist deformed steel and production method and production device thereof |
| CN113953316A (en) * | 2021-09-27 | 2022-01-21 | 包头钢铁（集团）有限责任公司 | Rolling method for rolling 310Z-shaped steel by using flat billet with thickness of less than 110mm |
| CN113953316B (en) * | 2021-09-27 | 2023-04-18 | 包头钢铁（集团）有限责任公司 | Rolling method for rolling 310Z-shaped steel by using flat billet with thickness of less than 110mm |
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Application publication date: 20130612 |