CN104014587A - Long-length rolling method and production line of T-shaped elevator guide rails - Google Patents
Long-length rolling method and production line of T-shaped elevator guide rails Download PDFInfo
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- CN104014587A CN104014587A CN201410260224.6A CN201410260224A CN104014587A CN 104014587 A CN104014587 A CN 104014587A CN 201410260224 A CN201410260224 A CN 201410260224A CN 104014587 A CN104014587 A CN 104014587A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
- B21B1/092—T-sections
Abstract
The invention discloses a long-length rolling method and a production line of T-shaped elevator guide rails. The method mainly comprises the steps of firstly, taking an H-shaped continuously cast bloom as an original blank; secondly, feeding the H-shaped continuously cast bloom to the universal paired one-piece rolling procedure to obtain a pair of symmetrical T-shaped guide rails; thirdly, feeding the one-piece T-shaped guide rails into a cooling device to be cooled, and conducting subdivision and straightening on the one-piece T-shaped guide rails to obtain two independent finished T-shaped rolled pieces; finally, conducting fixed-length sawing and other follow-up processing procedures on the subdivided finished T-shaped rolled pieces to obtain a final finished product. According to the long-length rolling method and the production line of the T-shaped elevator guide rails, cooling bending of a single elevator guide rail caused by limitation of the cooling condition after universal rolling can be avoided, the surface quality of the elevator guide rails can be improved after rolling, post-rolling internal stress can be improved, the size precision and using performance of the elevator guide rails are improved, and the long-length elevator guide rail production technology featured in long-length rolling, long-length cooling and long-length straightening is realized.
Description
Technical field
The invention belongs to ferrous metallurgical industry rolling of sectional iron forming field, be specifically related to a kind of milling method and production line thereof of elevator T type guide rail.
Background technology
Cage guide is that elevator up-down is sailed the safe rail at hoistway, and guide rails assembling, on well enclosure, is fixedly connected on wall of well by guide rail bracket, rail brackets, is related to one of stabilizing means of elevator device operation, there is no at present substitute products.The section of the conventional guide rail of elevator is asymmetric section, and majority is the section of similar T font, has the features such as rigidity is strong, reliability is high, safety is cheap.Guide level must be smooth, without obvious uneven surface, because guide rail is the rail that shuttles back and forth of leading boots and safety tongs on lift car, when installation, must ensure its gap.Simultaneously guide rail will bear will appointing of stop elevator in the time that hypervelocity accident appears in elevator, so its rigidity, wear-resisting type, stability etc. are all very important.
Cage guide production is at present in the majority with duo mill groove rolling method, as the groove rolling method of T75 cage guide in concerned countries standard GB/T 22562-2008 (ISO7465:2007).Because the shank of cage guide is longer, inside shank, gradient is less, dimension precision requirement is higher, and traditional duo mill pass method of rolling exists the drawbacks such as pass design is complicated, the roller groove degree of depth is large, roll strength is low (roll breakage has a big risk), pass quick abrasion, roll campaign is low, production operation is complicated, product size precision is low, production efficiency is low.
But by the omnipotent production Technology rolling cage guide that rolls method of the similar heavy rail of tradition, there is the drawback of Asymmetric Rolling less stable, and the cage guide of asymmetric section is obvious at cooling rear buckling phenomenon, and then affecting the rhythm of production of the finishing procedures such as follow-up aligning, scale, production efficiency is low.
For realizing the normal production of cage guide product, enterprise all adopts " the short chi production " technique of " cooling, the short chi aligning of short chi, short chi sawing " after rolling both at home and abroad, as CN 102527714 A, CN 1299844 C, clear 60-130403 etc.After finish to gauge, the hot rolled piece sawing of total length is become to some sections, the mode of the length by reducing hot rolled piece reduces the cooled bending amplitude of rolled piece, and then can enter aligning and subsequent handling.
This kind short chi production technology becomes to carry out after short chi by 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 such as hot saw or the hot shears facility after finish to gauge, saw blade and energy consumption increase; 2) on cold bed, many, the cold bed control program complexity of short chi rolled piece, production management cost increase; 3) aligning number of times increases, rhythm of production is slack-off, head/tail blind area of aligning rolled piece increases; 4) crop/tail number of times of cold saw scale sawing increases, saw blade consumption is large, saw blade cost is high; 5) product lumber recovery reduces, production and administration cost increases, the market competitiveness is low.
Along with urbanization process is progressively accelerated, infrastructure and real estate investment development are swift and violent, and China's elevator market demand is increased sharply, and has driven the demand growth of supporting cage guide industry.In addition, renovating of elevator also progressively increasing the demand of elevator with international market, created good condition to the development in cage guide market.The technical staff author of cage guide is devoted to the optimization rolling of asymmetric section cage guide and the research of cooling subsequent machining technology always, if cage guide can be realized to universal rolling and long chi production technology, it will be the another technological innovation of cage guide production technical field.
Summary of the invention
The problem existing according to the above-mentioned cage guide mode of production, in conjunction with current universal rolling production technology and control development level, the present invention proposes a kind of long chi milling method of elevator T type guide rail, this kind of method not only can solve after single cage guide universal rolling because cooling condition limits the cooling buckling phenomenon causing, rear internal stress is rolled in surface quality, the improvement that also can improve after cage guide rolls, improve dimensional accuracy and the serviceability of cage guide, realize the long chi production technology of cage guide " long chi rolling, cooling, the long chi aligning of long chi ".
The object of the invention is to be achieved through the following technical solutions:
A kind of long chi milling method of elevator T type guide rail: first, utilize H type continuous casting billet as original blank; Then, H type continuous casting billet is sent into omnipotent one-tenth duplex rolling process, be rolled into and be symmetrically two T-shaped guide rails; Then, by the T-shaped guide rail of disjunctor send in cooling device, carry out cooling, cooling after, make the T-shaped guide rail of disjunctor through subdivision aligning operation, be split into two independently T-shaped finished product rolled pieces; Finally, by the T-shaped finished product rolled piece after subdivision is carried out obtaining final finished after the subsequent treatment operations such as scale sawing;
Further, in described omnipotent one-tenth duplex rolling process, H type continuous casting billet carries out continuous rolling distortion in some universal mills and edging mill, obtains the cage guide of final disjunctor state;
Further, in last a few passage rolling deformations of described omnipotent one-tenth duplex rolling process, the joint portion of two disjunctor cage guides is rolled out to the detent that is beneficial to follow-up subdivision aligning operation location;
Further, described subdivision aligning operation can first be split into two rolled pieces, then aligns two independent single rolled pieces; Also can first align into two rolled pieces, then be split into two independent rolled pieces;
Further, after the T-shaped guide rail of described disjunctor is cooling in cooling device, carry out off-line finishing, described off-line finishing comprises that off-line becomes two aligning, off-line sawing, stacking bundlings and collects material loading again; After collecting again material loading, enter again subdivision aligning operation, be split into two independently T-shaped finished product rolled pieces; Finally, by the T-shaped finished product rolled piece after subdivision is carried out obtaining final finished after the subsequent treatment operations such as scale sawing.
The present invention also asks to protect a kind of production line that utilizes above-mentioned process to be rolled: comprise set gradually for heating furnace that H type continuous casting billet is heated, for H type continuous casting billet milling being become to be symmetrically the omnipotent one-tenth duplex rolling line of two T-shaped guide rails, for the T-shaped guide rail of disjunctor being carried out to cooling cold bed, for the T-shaped guide rail of disjunctor being carried out to the subdivision aligning associating unit of subdivision aligning and for carrying out the post treatment production line of post processing;
Further, described omnipotent one-tenth duplex rolling line comprises the roughing unit and the middle mm finishing mill unit that set gradually, and described roughing unit and middle mm finishing mill unit include tandem rolling unit and reversable mill unit;
Further, between described tandem rolling unit or before and after reversable mill unit, be provided with on-line shearing equipment;
Further, the forward and backward and middle cooling device being provided with for On-line Control rolled piece temperature of described tandem rolling unit or reversable mill unit;
Further, described post treatment production line comprises the traversing marshalling stand ,-cold sawing equipment, inspection stacking facility, baler and the collecting frame that set gradually.
The invention has the beneficial effects as follows: the one,, can solve the various drawbacks that the single rolling cage guide of traditional two roller exists, realize the free specification high precision rolling of cage guide; The 2nd,, after solving the single rolling of cage guide, in cooling procedure, there is bending by a relatively large margin, and then cause long chi rolled piece cannot enter smoothly the problem that straightener is aligned, the logistics of dredging whole production line, improve rhythm of production and the fluency of each operation, realize " the long chi is produced " technique of " long chi rolling, cooling, the long chi aligning of long chi "; The 3rd,, the long chi after minimizing hot-roll forming is shortened the sawing number of times of chi, reduces and produces and equipment loss cost, and significantly improve the production capacity of production line; The 4th,, the fault in production causing due to inhomogeneous deformation while reducing traditional two rollers and omnipotent single rolling, reduces energy consumption, equipment loss, enhances productivity; The present invention is also applicable to other asymmetric section special sections and becomes duplex rolling mill practice in addition, can solve the problem of the cooling bending of the single rolling of non-symmetry section channel product.
Other advantages of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on will be apparent to those skilled in the art to investigating below, or can be instructed from the practice of the present invention.Target of the present invention and other advantages can be realized and be obtained by description below.
Brief description of the drawings
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail, wherein:
Fig. 1 is technological process of production schematic diagram of the present invention;
Fig. 2 is elevator T type guide rail schematic diagram;
Fig. 3 is the H type original blank for rolling disjunctor cage guide;
Fig. 4 is the omnipotent roughing sectional schematic diagram of the present invention;
Fig. 5 is edging roughing sectional schematic diagram of the present invention;
Fig. 6 is that the present invention rolls sectional schematic diagram in omnipotent;
Fig. 7 rolls sectional schematic diagram in edging of the present invention;
Fig. 8 is the omnipotent finish rolling sectional schematic diagram of the present invention;
Fig. 9 is the sectional schematic diagram of subdivision disjunctor cage guide;
Figure 10 is that after subdivision, two independent elevator guide rails are aligned schematic diagram simultaneously;
Figure 11 is production-line arrangement schematic diagram of the present invention.
Detailed description of the invention
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.Should be appreciated that preferred embodiment is only for the present invention is described, instead of in order to limit the scope of the invention.
As shown in figure 11, the long chi rolling line of elevator T type guide rail of the present invention: comprise set gradually for heating furnace 1 that H type continuous casting billet is heated, for H type continuous casting billet milling being become to be symmetrically the omnipotent one-tenth duplex rolling line of two T-shaped guide rails, for the T-shaped guide rail of disjunctor being carried out to cooling cold bed 8, for the T-shaped guide rail of disjunctor being carried out to the subdivision aligning associating unit of subdivision aligning and for carrying out the post treatment production line of post processing; In the present embodiment, subdivision aligning associating unit comprises the splitting device 9 and the straightener 10 that set gradually, in the present embodiment, described omnipotent one-tenth duplex rolling line comprises the roughing unit 2 and the middle mm finishing mill unit 5 that set gradually, and described roughing unit and middle mm finishing mill unit include tandem rolling unit and reversable mill unit; In the present embodiment, between described tandem rolling unit or before and after reversable mill unit, be provided with on-line shearing equipment, the on-line shearing equipment of the present embodiment comprises the first on-line shearing equipment 4 and the second on-line shearing equipment 7; In the present embodiment, the forward and backward and middle cooling device being provided with for On-line Control rolled piece temperature of described tandem rolling unit or reversable mill unit, the cooling device in the present embodiment comprises the first controlled cooling device 3 and the second controlled cooling device 6; In the present embodiment, described post treatment production line comprises the traversing marshalling stand 11, cold sawing equipment 12, inspection stacking facility 13, baler 14 and the collecting frame 15 that set gradually.
As shown in the technological process of production of Fig. 1, the long chi milling method of elevator T type guide rail of the present invention is: first, utilize H type continuous casting billet as original blank; Then, H type continuous casting billet is sent into omnipotent one-tenth duplex rolling process, be rolled into and be symmetrically two T-shaped guide rails; Then, by the T-shaped guide rail of disjunctor send in cooling device, carry out cooling, cooling after, make the T-shaped guide rail of disjunctor through subdivision aligning operation, be split into two independently T-shaped finished product rolled pieces; Finally, by the T-shaped finished product rolled piece after subdivision is carried out obtaining final finished after the subsequent treatment operations such as scale sawing.
In this enforcement, the rolling original blank of cage guide is selected " H " type continuous casting billet, because its distortion section is similar to disjunctor cage guide section, ensureing, on the basis of product quality, can to reduce moulding passage, enhances productivity.Blank is transported to and in some universal mills and edging mill, carries out continuous rolling distortion after heating; In the operation of rolling, become disymmetric cage guide disjunctor together, in milling train, be rolled distortion, if Fig. 4 is to as shown in Fig. 8 simultaneously.In continuous rolling process, can, according to deformation of rolled wire passage and head actual conditions, between tandem rolling unit, be arranged on line shearing equipment, cut off the irregular head that continuous deformation produces.At the forward and backward and middle cooling device that is provided with On-line Control rolled piece temperature of tandem rolling unit, to realize online controlled rolling and controlled cooling or thermal mechanical rolling technique.After universal rolling, produce symmetrical connected double joint cage guide through hot saw saw cutting head/tail and enter the long chi of cold bed after sampling cooling, due to the symmetrical disjunctor of rolled piece now, himself cooling condition has had remarkable improvement, therefore at the cage guide rolled piece of cooling rear double joint disjunctor, its bending amplitude significantly reduces, completely different with the cooled remarkable buckling phenomenon of single cage guide rolled piece.Cooled disjunctor rolled piece is transported to subdivision, aligning associating unit through roller-way, the detent at process centralising device and disjunctor rolled piece middle part is by disjunctor rolled piece centering, through splitting device, disjunctor rolled piece is carried out to subdivision again, enter subsequently aligning unit separate two cage guides are aligned.Splitting device carries out successively and simultaneously with the manufacturing procedure of aligning unit, and disjunctor rolled piece forms two independent cage guide finished products after entering subdivision, aligning associating unit.After aligning, through traversing organizing apparatus, some cage guides are carried out in a row, and be delivered to cold saw tangent line and carry out product sizing sawing.Enter subsequently the cage guide checking after stand and stacking stand are to scale and carry out check sum code buttress, finally by binding apparatus, to becoming buttress product to tie up, warehouse-in rolls off the production line.Being symmetrically two disjunctor cage guide finishing process has two kinds of modes, and one is online subdivision, aligning, sawing, stacking, collection; Another kind is off-line subdivision, aligning, stacking, collection again after online sawing, collection.
In the present embodiment, in described omnipotent one-tenth duplex rolling process, H type continuous casting billet carries out continuous rolling distortion in some universal mills and edging mill, obtains the cage guide of final disjunctor state.
In the present embodiment, in last a few passage rolling deformations of described omnipotent one-tenth duplex rolling process, the joint portion of two disjunctor cage guides is rolled out to the detent that is beneficial to follow-up subdivision aligning operation location; So that smooth centering, spacing in follow-up aligning and subdivision operation, prevent rolled piece sideslip in subdivision process.
In the present embodiment, described subdivision aligning operation can first be split into two rolled pieces, then aligns two independent single rolled pieces; Also can first align into two rolled pieces, then be split into two independent rolled pieces.
In the present embodiment, after the T-shaped guide rail of described disjunctor is cooling in cooling device, carry out online finishing, certainly in different embodiment, also can adopt off-line finishing, off-line finishing to comprise that off-line becomes two aligning, off-line sawing, stacking bundlings and collects material loading again; After collecting again material loading, enter again subdivision aligning operation, be split into two independently T-shaped finished product rolled pieces; Finally, by the T-shaped finished product rolled piece after subdivision is carried out obtaining final finished after the subsequent treatment operations such as scale sawing.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from aim and the scope of the technical program, it all should be encompassed in the middle of claim scope of the present invention.
Claims (10)
1. a long chi milling method for elevator T type guide rail, is characterized in that: first, utilize H type continuous casting billet as original blank; Then, H type continuous casting billet is sent into omnipotent one-tenth duplex rolling process, be rolled into and be symmetrically two T-shaped guide rails; Then, by the T-shaped guide rail of disjunctor send in cooling device, carry out cooling, cooling after, make the T-shaped guide rail of disjunctor through subdivision aligning operation, be split into two independently T-shaped finished product rolled pieces; Finally, by the T-shaped finished product rolled piece after subdivision is carried out obtaining final finished after the subsequent treatment operations such as scale sawing.
2. the long chi milling method of elevator T type guide rail according to claim 1, it is characterized in that: in described omnipotent one-tenth duplex rolling process, H type continuous casting billet carries out continuous rolling distortion in some universal mills and edging mill, obtains the cage guide of final disjunctor state.
3. the long chi milling method of elevator T type guide rail according to claim 1, it is characterized in that: in last a few passage rolling deformations of described omnipotent one-tenth duplex rolling process, the joint portion of two disjunctor cage guides is rolled out to the detent that is beneficial to follow-up subdivision aligning operation location.
4. the long chi milling method of elevator T type guide rail according to claim 1, is characterized in that: described subdivision aligning operation can first be split into two rolled pieces, then aligns two independent single rolled pieces; Also can first align into two rolled pieces, then be split into two independent rolled pieces.
5. the long chi milling method of elevator T type guide rail according to claim 1, it is characterized in that: after the T-shaped guide rail of described disjunctor is cooling in cooling device, carry out off-line finishing, described off-line finishing comprises that off-line becomes two aligning, off-line sawing, stacking bundlings and collects material loading again; After collecting again material loading, enter again subdivision aligning operation, be split into two independently T-shaped finished product rolled pieces; Finally, by the T-shaped finished product rolled piece after subdivision is carried out obtaining final finished after the subsequent treatment operations such as scale sawing.
6. a long chi rolling line for elevator T type guide rail, is characterized in that: comprise set gradually for heating furnace that H type continuous casting billet is heated, for H type continuous casting billet milling being become to be symmetrically the omnipotent one-tenth duplex rolling line of two T-shaped guide rails, for the T-shaped guide rail of disjunctor being carried out to cooling cold bed, for the T-shaped guide rail of disjunctor being carried out to the subdivision aligning associating unit of subdivision aligning and for carrying out the post treatment production line of post processing.
7. the long chi rolling line of elevator T type guide rail according to claim 6, it is characterized in that: described omnipotent one-tenth duplex rolling line comprises the roughing unit and the middle mm finishing mill unit that set gradually, and described roughing unit and middle mm finishing mill unit include tandem rolling unit and reversable mill unit.
8. the long chi rolling line of elevator T type guide rail according to claim 7, is characterized in that: between described tandem rolling unit or before and after reversable mill unit, be provided with on-line shearing equipment.
9. the long chi rolling line of elevator T type guide rail according to claim 7, is characterized in that: the forward and backward and middle cooling device being provided with for On-line Control rolled piece temperature of described tandem rolling unit or reversable mill unit.
10. the long chi rolling line of elevator T type guide rail according to claim 6, is characterized in that: described post treatment production line comprises the traversing marshalling stand ,-cold sawing equipment, inspection stacking facility, baler and the collecting frame that set gradually.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410260224.6A CN104014587A (en) | 2014-06-12 | 2014-06-12 | Long-length rolling method and production line of T-shaped elevator guide rails |
| PCT/CN2014/082016 WO2015188421A1 (en) | 2014-06-12 | 2014-07-11 | Long-length rolling method for t-shaped guide rail of elevator and production line therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410260224.6A CN104014587A (en) | 2014-06-12 | 2014-06-12 | Long-length rolling method and production line of T-shaped elevator guide rails |
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| Publication Number | Publication Date |
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| CN104014587A true CN104014587A (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410260224.6A Pending CN104014587A (en) | 2014-06-12 | 2014-06-12 | Long-length rolling method and production line of T-shaped elevator guide rails |
Country Status (2)
| Country | Link |
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| CN (1) | CN104014587A (en) |
| WO (1) | WO2015188421A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104289517A (en) * | 2014-09-23 | 2015-01-21 | 南京钢铁股份有限公司 | Production method for off-line subdividing plate s |
| CN105290109A (en) * | 2015-12-06 | 2016-02-03 | 辽宁宏昌重工股份有限公司 | Roller assembly for slitting and rolling of elevator guide rail and rolling method |
| CN105414237A (en) * | 2015-12-11 | 2016-03-23 | 山东石横特钢集团有限公司 | Steel section producing device and process thereof |
| 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 |
| CN110142293A (en) * | 2019-05-09 | 2019-08-20 | 山东钢铁股份有限公司 | The milling method and its rolling system of open fashioned iron |
| CN111468911A (en) * | 2020-04-07 | 2020-07-31 | 中冶东方工程技术有限公司 | Steel rail finishing method and production line |
| CN115092790A (en) * | 2022-08-24 | 2022-09-23 | 浙江保利电梯导轨制造有限公司 | Elevator guide rail connecting and positioning structure and assembly forming process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104289517A (en) * | 2014-09-23 | 2015-01-21 | 南京钢铁股份有限公司 | Production method for off-line subdividing plate s |
| CN105290109A (en) * | 2015-12-06 | 2016-02-03 | 辽宁宏昌重工股份有限公司 | Roller assembly for slitting and rolling of elevator guide rail and rolling method |
| CN105414237A (en) * | 2015-12-11 | 2016-03-23 | 山东石横特钢集团有限公司 | Steel section producing device and process thereof |
| 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 |
| CN110142293A (en) * | 2019-05-09 | 2019-08-20 | 山东钢铁股份有限公司 | The milling method and its rolling system of open fashioned iron |
| CN111468911A (en) * | 2020-04-07 | 2020-07-31 | 中冶东方工程技术有限公司 | Steel rail finishing method and production line |
| CN115092790A (en) * | 2022-08-24 | 2022-09-23 | 浙江保利电梯导轨制造有限公司 | Elevator guide rail connecting and positioning structure and assembly forming process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015188421A1 (en) | 2015-12-17 |
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Application publication date: 20140903 |