CN209886626U - Memorial archway type withdrawal and straightening machine and small square billet continuous casting machine adopting same for pressing - Google Patents
Memorial archway type withdrawal and straightening machine and small square billet continuous casting machine adopting same for pressing Download PDFInfo
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- CN209886626U CN209886626U CN201822095537.7U CN201822095537U CN209886626U CN 209886626 U CN209886626 U CN 209886626U CN 201822095537 U CN201822095537 U CN 201822095537U CN 209886626 U CN209886626 U CN 209886626U
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Abstract
The utility model discloses a memorial archway type withdrawal and straightening machine. It includes: memorial archway formula frame, at least two sets of rollers of pulling out and straightening and lifting drive mechanism, memorial archway formula frame includes: the device comprises a base, an upper frame and a plurality of rows of upright post frames; each group of pulling and straightening rollers is positioned between two adjacent rows of upright post frames and comprises an upper pulling and straightening roller and a lower pulling and straightening roller; the lifting driving mechanism is arranged on the upper frame, the number of the lifting driving mechanism is the same as that of the pulling and straightening roller sets, the upper part of the lifting driving mechanism is provided with a displacement sensor, and the lower part of the lifting driving mechanism is connected with an upper pulling and straightening roller lifting frame; the upper straightening roller is rotatably arranged in the upper straightening roller lifting frame, and the lower straightening roller is rotatably arranged on the upright post frame; the side of the upright post frame facing the pulling and straightening roller is provided with a slide rail, and the lifting driving mechanism drives the upper pulling and straightening roller lifting frame to slide up and down in the slide rail. The utility model discloses memorial archway formula structure, simple compactness, frame rigidity are good, have stable direction function, and reduction control is accurate, has guaranteed the casting blank quality. The utility model discloses still disclose a little billet conticaster that adopts memorial archway formula withdrawal and straightening machine to push down.
Description
Technical Field
The utility model relates to a continuous casting technical field especially relates to a memorial archway formula withdrawal and straightening machine and adopt it to carry out little square billet caster that pushes down.
Background
For a small square billet continuous casting machine for producing square billets with the section size of less than 200mm multiplied by 200mm, when steel grades with strict requirements on internal quality and compression ratio, such as high-quality alloy steel, are produced, the internal quality of the continuous casting billets needs to be strictly controlled, and particularly the center porosity and segregation indexes of the casting billets are controlled. The dynamic reduction technology is a method for reducing center porosity and segregation by applying a certain reduction amount near the solidification end to compensate the solidification shrinkage of a casting blank and prevent the solidification end from enriching segregation elements. The prerequisite for implementing dynamic reduction is that the billet continuous casting machine adopts a withdrawal and straightening machine capable of realizing multipoint reduction.
One of the main key points for the implementation of the dynamic pressing technology is that: the position of the coagulation tip is accurately determined. The casting blank solidification end point is usually obtained by real-time calculation by adopting a dynamic solidification model according to actual operation conditions (such as steel grade, pulling speed, molten steel superheat degree, secondary cooling curve and the like). The current experience is that the soft reduction area is positioned in the range of the casting blank solid phase rate fs being 0.3-0.9, which is more suitable. Compared with the billet continuous casting machine, the billet continuous casting machine has a wider range for meeting the conditions of different steel types, the drawing speed, the superheat degree of molten steel and the like. However, under the conditions of a specific steel grade, pulling speed, superheat degree and the like, the length of a liquid phase region for dynamic reduction is short due to the small section of a casting blank, and more press rolls must be arranged in a limited range. In the prior art, the distance between the pulling and straightening rollers is large, and the parameter requirement of billet casting blank pressing cannot be met.
SUMMERY OF THE UTILITY MODEL
Based on the problem, the utility model aims to provide a compact structure, have stable direction function, the accurate memorial archway formula of reduction volume is drawn and is rectified machine, should draw and rectify the machine and can realize many places of billet conticaster, multiple spot and push down technology, reduce billet center segregation and loose, improve the casting blank quality.
Another object of the utility model is to provide an adopt above-mentioned memorial archway formula tension leveler and carry out little square billet caster that pushes down.
The above purpose is realized by the following technical scheme:
according to an aspect of the utility model, the utility model provides a pair of memorial archway formula withdrawal and straightening machine, include: the memorial archway type frame, at least two groups of pulling straightening rollers positioned in the memorial archway type frame and a lifting driving mechanism positioned above the memorial archway type frame, wherein the memorial archway type frame comprises: a base, an upper frame mounted on the upper end of the base, and a plurality of rows of upright frames mounted between the upper frame and the base; each group of pulling and straightening rollers is positioned between two adjacent rows of upright post frames, and each group of pulling and straightening rollers comprises an upper pulling and straightening roller and a lower pulling and straightening roller positioned below the upper pulling and straightening roller; the lifting driving mechanism is arranged on the upper frame, the number of the lifting driving mechanism is the same as the number of groups of the straightening rollers, the upper part of the lifting driving mechanism is provided with a displacement sensor, and the lower part of the lifting driving mechanism is connected with an upper straightening roller lifting frame; the upper straightening and withdrawal roll is rotatably arranged in the upper straightening and withdrawal roll lifting frame, and the lower straightening and withdrawal roll is rotatably arranged on two adjacent rows of upright posts; the upright post frame is provided with a slide rail towards one side of the withdrawal and straightening roller, and the upper withdrawal and straightening roller lifting frame slides up and down in the slide rail under the driving of the lifting driving mechanism.
Preferably, the column frame is provided with at least four rows, and two adjacent groups of pulling and straightening rollers do not share one row of column frame.
More preferably, the withdrawal and straightening rollers are arranged in two groups, the upright frames are arranged in four rows, the first group of withdrawal and straightening rollers are positioned between the first and second rows of upright frames, and the second group of withdrawal and straightening rollers are positioned between the third and fourth rows of upright frames.
Preferably, the distance between two adjacent pulling and straightening rollers is 800 mm-1200 mm.
Preferably, the withdrawal and straightening unit further comprises: the transmission device is used for transmitting the rotation of the upper straightening and withdrawal roll; the transmission device includes: a speed reducer connected with the end part of the upper pulling and straightening roller and a motor connected with the speed reducer.
Preferably, the withdrawal and straightening unit further comprises: the heat shield is arranged, one group of pulling and straightening rollers are correspondingly provided with one heat shield, and the heat shield is arranged on one side, facing the pulling and straightening rollers, of the stand column frame.
Preferably, the upright post frame is of a steel plate structure, has a thickness of 40-90 mm and is free of water cooling. More preferably, each row comprises two pylons. Preferably, a slide rail for raising or lowering the upper leveling roll lifter is formed inside the column frame (on the side toward the leveling rolls) by providing a slide plate.
Preferably, the base is provided with a withdrawal and straightening machine cooling water channel which is automatically communicated with a workshop water channel.
Preferably, the bottom of the upright post frame is connected with the base through a bolt; the top is connected with the upper frame through a connecting shaft.
According to the utility model discloses an on the other hand, the utility model provides a pair of adopt above-mentioned memorial archway formula tension leveler and carry out the billet caster that pushes down, wherein, memorial archway formula tension leveler can arrange in one or more district in the preceding horizontal area of roll table in pitch arc district, the aligning district of billet caster and before cutting.
Preferably, the centers of the upper and lower withdrawal and straightening rollers of the memorial archway type withdrawal and straightening machine are both arranged in the normal direction of the outer arc datum line of the small square billet.
Preferably, 1-7 memorial archway type withdrawal and straightening machines are arranged on the billet continuous casting machine.
Has the advantages that:
the memorial archway type withdrawal and straightening machine adopts an integral memorial archway type frame structure, has simple and compact structure, is convenient for arranging more press rolls in a shorter liquid phase area, and meets the parameter requirement of the billet casting blank reduction interval; the frame has good rigidity, and can be used for the dynamic soft reduction and heavy reduction technology of a continuous casting machine; the stable guiding function is realized; the pressing amount is controlled accurately; the quality of the casting blank can be ensured.
Wherein, the column frame, the upper frame and the base are connected to form a memorial archway type structure, and the frame has good rigidity. The upper straightening and withdrawal roller moves radially under the driving of the lifting driving mechanism and the guiding action of the upright post frame slide rail, compared with a clamp type structure in the prior art, the stress condition of a casting blank is optimized, and the reduction precision of the roller is ensured; the multi-position and multi-point reduction process of the billet continuous casting machine can be realized; reducing the center segregation and the porosity of the small square billet. The lifting driving mechanism is provided with a displacement sensor, so that the pressing position and the pressing amount of the upper pulling and straightening roller can be accurately controlled. Compared with an independent frame withdrawal and straightening machine, the integral structure is compact, the space between the upper withdrawal and straightening rollers is reduced, more press rollers can be arranged in a shorter liquid phase region, and the parameter requirement of the billet casting blank reduction space is met. Compare in the whole machine of straightening and withdrawal of multimachine frame, the utility model discloses two roll-type overall structure occupy the online time of stopping production of conticaster short, and construction cost is few with the maintenance cost.
The utility model discloses a memorial archway formula withdrawal and straightening machine carries out the little square billet conticaster that pushes down, has bigger flexibility in the interval selection that pushes down. The requirements of different steel types, pulling speeds, molten steel superheat degrees and other conditions in a wider range and different pressing amounts, pressing rates and other pressing processes are met.
Drawings
FIG. 1 is a schematic structural view of the housing-type withdrawal and straightening machine of the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic structural view of a billet caster which is pressed down by the memorial archway type withdrawal and straightening machine of the utility model.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention:
as shown in fig. 1, the utility model provides a pair of memorial archway type withdrawal and straightening machine, include: the device comprises a housing window type frame, at least two groups of pulling and straightening rollers positioned in the housing window type frame, and a lifting driving mechanism positioned above the housing window type frame. Specifically, the tension leveler comprises two groups of tension leveler rollers, four rows of upright post frames, an upper frame, two upper tension leveler roller movable frames, two lifting driving mechanisms (which can be hydraulic cylinders), two heat shields, two speed reducers, two motors, a base, two displacement sensors (arranged in the hydraulic cylinders) and the like.
Wherein, the two groups of pulling and straightening rollers comprise two upper pulling and straightening rollers 1 and two lower pulling and straightening rollers 2 to form two pairs of upper and lower pulling and straightening rollers. And each row of the four rows of the upright post frames comprises two upright post frames 3, the first group of the withdrawal and straightening rollers is positioned between the first and second rows of the upright post frames, the second group of the withdrawal and straightening rollers is positioned between the third and fourth rows of the upright post frames, and two adjacent groups of the withdrawal and straightening rollers can not share one row of the upright post frames, but are not limited to the rows. The utility model discloses in the base 10 of the below of two pairs of upper and lower withdrawal and straightening rollers be a whole, the upper frame 4 of top also be a whole. The second and third rows of column frames can be fixed by fixing devices, such as connecting plates and bolts.
The centers of each group of upper and lower pulling and straightening rollers are arranged on the normal line of the outer arc datum line of the small square billet. The housing style frame includes: a base 10, an upper frame 4 mounted on the upper end of the base, and a plurality of rows of uprights 3 mounted between the upper frame and the base. Each group of pulling and straightening rollers is positioned between two adjacent rows of upright post frames, and each group of pulling and straightening rollers comprises an upper pulling and straightening roller 1 and a lower pulling and straightening roller 2 positioned below the upper pulling and straightening roller. The lifting driving mechanism 6 is arranged on the upper frame 4, the number of the lifting driving mechanism is the same as the number of the pulling and straightening rollers, the upper part of the lifting driving mechanism 6 is provided with a displacement sensor 11, and the lower part of the lifting driving mechanism 6 is connected with an upper pulling and straightening roller lifting frame 5. Wherein, the upper pulling and straightening roller 1 is rotatably arranged in the upper pulling and straightening roller crane 5, and the lower pulling and straightening roller 2 is rotatably arranged on two adjacent rows of upright post frames; a slide rail is arranged on one side of the upright post frame facing the pulling and straightening roller (namely the inner side of the upright post frame), and the upper pulling and straightening roller lifting frame 5 is driven by the lifting driving mechanism 6 to slide up and down in the slide rail. In the utility model, a lifting driving mechanism 6 is arranged corresponding to a group of pulling and straightening rollers; one group of pulling and straightening rollers is matched with the two rows of upright post frames 3. Each row of the upright frames can be formed by one upright frame or two or more upright frames. The lifting driving mechanism 6 and the pulling and straightening roller are on the same axis.
The utility model adopts the upper frame 4, the base 10 and the upright post frame 3 to form an independent whole memorial archway type structure, two groups of upper and lower pulling straightening rollers are arranged in the structure to form a double-pair roller whole memorial archway type withdrawal and straightening machine, the structure is simple and compact, more lower pressing rollers are conveniently arranged in a shorter liquid phase area, and the parameter requirement of billet casting blank pressing space is met; and the housing frame has good rigidity, so that the withdrawal and straightening machine can be used for the dynamic soft reduction and heavy reduction technology of a continuous casting machine. The utility model discloses preferably adopt four rows of column frame 3 in order to settle two sets of upper and lower straightening rollers, but is not limited to this, also can adopt multirow column frame in order to settle more sets of straightening rollers.
In an alternative embodiment, the top end of the column frame 3 and the upper frame 4, and the bottom end of the column frame 3 and the base 10 can be movably installed and fixed, so that the distance between the column frames 3 can be adjusted, the setting of the distance between the upper straightening and withdrawal rolls is facilitated, and the dynamic pressing process of the billet caster can be completed as required. For example: a plurality of mounting holes may be provided on the upper frame 4, the column frame 3, and the base 10, and the interval between the mounting holes is set so as to accomplish the adjustment of the interval between the pulling-up rolls. In the utility model, the upper frame 4 is connected with four rows of two groups of upright post frames through eight connecting shafts; four waist-shaped holes are formed in the bottoms of the upright post frames, and the bottoms of the two rows of upright post frames are fixedly connected with the base 10 through bolts respectively to form an integral memorial archway type structure. In order to facilitate the installation, adjustment and positioning of the memorial archway type withdrawal and straightening machine, an adjusting block is arranged below the base. Meanwhile, the base 10 is also a cooling water channel of the withdrawal and straightening machine, after the withdrawal and straightening machine is in place, the cooling water channel of the equipment body is automatically communicated with the workshop water channel, and an electric terminal box and an aviation plug are adopted to be connected with a workshop cable, so that the occupied on-line production stop time of a continuous casting machine is short, and the maintenance cost is low. The utility model discloses memorial archway formula withdrawal and straightening machine is two sets of withdrawal and straightening rollers altogether (upper and lower withdrawal and straightening rollers constitute a set of withdrawal and straightening roller), and the roller footpath can be 300 ~ 500 mm. Because the upright post frame integral memorial archway structure is adopted, the roller distance between two adjacent groups of pulling and straightening rollers along the pulling direction can be controlled to be 800-1200 mm, and the compact structure can arrange more press rollers in a shorter liquid phase region and meet the parameter requirement of the reduction distance of the billet casting blank.
The utility model discloses well top is drawn and is rectified roller 1 for the driving roller, and lower drawing and rectifying roller 2 is free roll, and column frame 3 adopts the steel sheet structure, has further improved memorial archway formula frame rigidity, and lower drawing and rectifying roller 2 is on column frame 3's installation face through lower drawing and rectifying roller bearing frame bolt fastening. The thickness of the upright post frame 2 can be 40-90 mm, and no water cooling is performed. The inner side of the upright post frame 3 is provided with a slide rail for sliding the pulling and straightening rollers up and down, for example, the inner side of the first and second upright post frames is provided with a slide rail for forming a first group of pulling and straightening rollers; and sliding plates are arranged on the inner side of the third and fourth upright post frames to form sliding rails of the second group of pulling and straightening rollers, the number of the sliding plates can be four, and the sliding plates are not limited to the four sliding plates, and the upper and lower pulling and straightening rollers can stably ascend or descend under the guiding action of the sliding rails. The length of the sliding plate in each row of upright post frames can be set according to the moving range of the upper pulling and straightening roller.
The utility model discloses well lift drive mechanism 6 can be the pneumatic cylinder, and pull up straightening roller 1 on every pneumatic cylinder drive, and be located same axis, and the pneumatic cylinder is built-in to have displacement sensor 11, can pull up the draft of straightening the roller in the accurate control, carries out the dynamic adjustment roll gap to can guarantee the casting blank quality. The flange plate of the hydraulic cylinder is fixed on the hydraulic cylinder support through a bolt, and the hydraulic cylinder support is connected to the upper frame through a connecting shaft. The piston rod of the hydraulic cylinder is hinged with the upper straightening and withdrawal roller lifting frame 5, and specifically, the lug ring at the head of the piston rod of the hydraulic cylinder is hinged with the upper straightening and withdrawal roller movable frame. The upper straightening roll 1 is fixed in the upper straightening roll movable frame 5, and is driven by the lifting driving mechanism 6 to move radially in a slide rail on the inner side of the upright post frame 3 together with the upper straightening roll movable frame 5, so that the upper straightening roll 1 is more stable in guiding and more uniform in stress, and the pressing precision of the upper straightening roll 1 is further ensured.
As shown in fig. 2, a speed reducer 8 is directly suspended at the end of the upper straightening roll, a motor 9 is connected above the speed reducer 8, and the speed reducer 8 and the motor 9 together form a transmission device of the upper straightening roll to transmit the rotation of the upper straightening roll. The memorial archway type frame is also internally provided with two heat insulation covers 7 which are respectively positioned in the first row of upright post frames, the second row of upright post frames and the third row of upright post frames and are arranged on the inner sides of the upright post frames to carry out heat insulation protection on the withdrawal and straightening unit body equipment, and preferably, the heat insulation covers 7 can adopt water tank type water cooling covers.
The utility model provides an adopt above-mentioned memorial archway formula tension leveler to carry out the billet caster that pushes down is applicable to the production continuous casting billet section at 120mm ~ 200 mm's billet. 1-7 memorial archway type withdrawal and straightening machines can be arranged. The memorial archway type withdrawal and straightening machine can be arranged at a plurality of positions of a billet continuous casting machine according to conditions such as different steel types, drawing speeds, molten steel superheat degrees and the like, as well as reasonable reduction and reduction rate isobaric reduction processes, such as a plurality of positions behind the tail end electromagnetic stirring, a casting blank straightening area, a dummy bar storage and laying-down direction, the front part of a roller way before cutting and the like; and the centers of the upper and lower pulling and straightening rollers of the memorial archway type pulling and straightening machine are uniformly arranged in the normal direction of the outer arc datum line of the small square billet.
As shown in fig. 3, the memorial archway type withdrawal and straightening machine can be arranged in an arc line area of a billet continuous casting machine, and if the billet continuous casting machine is provided with a tail end electromagnetic stirring system, the withdrawal and straightening machine is arranged in the rear 3m range of an online tail end electromagnetic stirring coil; such as not equipped with a terminal electromagnetic stirring system. The withdrawal and straightening machine is arranged in an area 6-15 meters away from the meniscus of the crystallizer. The memorial archway type withdrawal and straightening machine can be arranged in the straightening area of a billet continuous casting machine, and 1-3 memorial archway type withdrawal and straightening machines can be arranged. The memorial archway type withdrawal and straightening machine can be arranged in a horizontal area of a billet continuous casting machine before cutting of a roller way, and 1-3 memorial archway type withdrawal and straightening machines can be arranged.
The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, which is protected by the claims.
Claims (10)
1. The utility model provides a memorial archway formula withdrawal and straightening machine which characterized in that includes: a housing frame, at least two groups of pulling and straightening rollers positioned in the housing frame, and a lifting driving mechanism positioned above the housing frame,
the housing style frame includes: a base, an upper frame mounted on the upper end of the base, and a plurality of rows of upright frames mounted between the upper frame and the base;
each group of pulling and straightening rollers is positioned between two adjacent rows of upright post frames, and each group of pulling and straightening rollers comprises an upper pulling and straightening roller and a lower pulling and straightening roller positioned below the upper pulling and straightening roller;
the lifting driving mechanism is arranged on the upper frame, the number of the lifting driving mechanism is the same as the number of groups of the straightening rollers, the upper part of the lifting driving mechanism is provided with a displacement sensor, and the lower part of the lifting driving mechanism is connected with an upper straightening roller lifting frame;
the upper straightening and withdrawal roll is rotatably arranged in the upper straightening and withdrawal roll lifting frame, and the lower straightening and withdrawal roll is rotatably arranged on two adjacent rows of upright posts; a slide rail is arranged on one side of the upright post frame facing the pulling and straightening roller; the upper pulling and straightening roller lifting frame slides up and down in the slide rail through the driving of the lifting driving mechanism.
2. The memorial archway type withdrawal and straightening machine according to claim 1, wherein the column frames are arranged in at least four rows, and two adjacent groups of withdrawal and straightening rolls do not share one row of column frames.
3. The memorial archway type withdrawal and straightening machine as claimed in claim 1, wherein the distance between two adjacent groups of withdrawal and straightening rollers is 800mm to 1200 mm.
4. The memorial archway type withdrawal straightening machine according to claim 2, wherein the withdrawal straightening rolls are in two groups, the upright frames are in four rows, the first group of withdrawal straightening rolls is positioned between the first and second rows of upright frames, and the second group of withdrawal straightening rolls is positioned between the third and fourth rows of upright frames.
5. The memorial archway-type withdrawal and straightening machine of claim 1, further comprising: the transmission device is used for transmitting the rotation of the upper straightening and withdrawal roll; the transmission device includes: a speed reducer connected with the end part of the upper pulling and straightening roller and a motor connected with the speed reducer.
6. The memorial archway-type withdrawal and straightening machine of claim 1, further comprising: the heat shield is arranged, one group of pulling and straightening rollers are correspondingly provided with one heat shield, and the heat shield is arranged on one side, facing the pulling and straightening rollers, of the stand column frame.
7. The memorial archway type withdrawal and straightening machine as claimed in claim 1, wherein the upright post frame is of a steel plate structure, has the thickness of 40-90 mm and is free of water cooling; the bottom of the upright post frame is connected with the base through a bolt; the top is connected with the upper frame through a connecting shaft.
8. A billet caster for reduction using the memorial archway type withdrawal straightening machine as set forth in any one of claims 1 to 7, wherein the memorial archway type withdrawal straightening machine is disposed in one or more of an arc zone, a straightening zone, and a horizontal zone before a roll table is cut.
9. The continuous billet caster as claimed in claim 8, wherein both the centers of the upper and lower withdrawal rolls of the memorial archway type withdrawal straightening unit are arranged in the normal direction of the outer arc reference line of the billet.
10. The billet continuous casting machine according to claim 8, wherein 1 to 7 said memorial archway type withdrawal and straightening machines are arranged in said billet continuous casting machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822095537.7U CN209886626U (en) | 2018-12-13 | 2018-12-13 | Memorial archway type withdrawal and straightening machine and small square billet continuous casting machine adopting same for pressing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822095537.7U CN209886626U (en) | 2018-12-13 | 2018-12-13 | Memorial archway type withdrawal and straightening machine and small square billet continuous casting machine adopting same for pressing |
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| CN209886626U true CN209886626U (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822095537.7U Active CN209886626U (en) | 2018-12-13 | 2018-12-13 | Memorial archway type withdrawal and straightening machine and small square billet continuous casting machine adopting same for pressing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482830A (en) * | 2018-12-13 | 2019-03-19 | 中冶南方连铸技术工程有限责任公司 | Memorial archway formula withdrawal straightening machine and the billet caster depressed using it |
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2018
- 2018-12-13 CN CN201822095537.7U patent/CN209886626U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482830A (en) * | 2018-12-13 | 2019-03-19 | 中冶南方连铸技术工程有限责任公司 | Memorial archway formula withdrawal straightening machine and the billet caster depressed using it |
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