CN205043105U - Continuous casting of metal crystallizer liquid cooling narrow face copper plate - Google Patents
Continuous casting of metal crystallizer liquid cooling narrow face copper plate Download PDFInfo
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- CN205043105U CN205043105U CN201520712163.2U CN201520712163U CN205043105U CN 205043105 U CN205043105 U CN 205043105U CN 201520712163 U CN201520712163 U CN 201520712163U CN 205043105 U CN205043105 U CN 205043105U
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Abstract
The utility model discloses a continuous casting of metal crystallizer liquid cooling narrow face copper plate, including the work copper that the back is connected with the backplate through the connecting piece, work copper avris to the crooked chamfer face that forms in working face upper portion of work copper, the connecting piece through its go up to set up protruding and constitute the cooling agent clearance between the backplate, the utility model discloses can set up sealed wall man -hour on the backplate adding, can guarantee the leakproofness of coolant liquid, also can be directly form annular water tank with the crystallizer wide plate, under the stable circumstances of assurance crystallizer device, acquisition the best effect of thermal conductivity, the circumstances of avoiding local copper appeared by heat altered, this device is guaranteeing that effect of thermal conductivity just can improve the steel billet quality, lengthens the life of copper.
Description
Technical field
The utility model relates to metal freezing and continuous casting technical field, particularly a kind of metal continuous casting crystallizer liquid cooling narrow copper plate.
Background technology
Along with the development of world's metallurgical technology, the constantly progress of modern continuous casting technology, steel grade of can casting constantly expands, and some high alloys, high-quality, high crack sensitivity steel grade are continuous is produced in the production procedure of large iron and steel enterprise continuous casting; One of this wherein main technological progress is the development of big cross section strand continuous casting technology; The development of big cross section strand continuous casting technology, the compression ratio of steel increases, and the product quality of steel improves; But the adverse effect that the increase of casting blank section brings is exactly: because strand volume is larger in casting process, when in the process of solidifying, it becomes solid phase from liquid phase, need to discharge the effect that a large amount of heat ensures solidification, if copper coin heat-conducting effect is not good, very easily cause heat radiation obstructed, the phenomenon that solidification effect is not good, if solidifying crust when carry-over pinch rolls draw crosses thin, very easily cause compressive deformation, gently then affect billet quality weight then may due to the pressurized serious production accident causing molten steel to leak that causes steel billet sheetmetal to break.
Chinese utility model patent ZL02214026.3(notification number CN2547438Y, title " slab continuous-casting crystallizer narrow-strop copper plate ") provide a kind of narrow face copper plate of crystallizer with side chamfering, its chamfer dimesion is 6 ~ 10mm, and angle is 45 degree.This patent does not have the type of cooling pointing out side chamfering, is unfavorable for the uniformity of product cooling on a horizontal plane.The patent of CN201744629Y, discloses a kind of narrow copper plate of continuous casting combination mould, although it arranges comparatively comprehensively cooling bath, the less effect that will certainly affect cooling of cooling surface, the phenomenon causing heat conduction bad occurs.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, discloses the chamfering narrow boards that a kind of middle part arranges liquid cooling face.
Technical scheme adopted to achieve these goals:
A kind of metal continuous casting crystallizer liquid cooling narrow copper plate, comprise the work copper coin that a back side is connected with backboard by connector, working face upper bend from described work copper coin avris to described work copper coin formed fillet surface, described connector by it on setting projection and described backboard between form cooling agent gap.
The horizontal plane angle α of described fillet surface and described work copper coin is 20 ~ 35 °.
The initiating terminal of described fillet surface is to dual-side distance 1/2 ~ 2/3 by work copper coin center.
Described connector is that the back side of described work copper coin arranges cylinder boss, and described cylinder boss and described work copper coin are designed to one, and described cylinder boss top arranges screw thread.
Projection on described connector is the step surface that described cylinder boss place is arranged or the cylinder be set on described cylinder boss.
Described thread surface arranges chromium coating.
The utility model employing work copper coin is by forming fillet surface to the working face upper bend of work copper coin, and fillet surface is α with the acute angle of the horizontal plane angle of work copper plate working surface, can be good at the technical barrier solving corner cracking, adopt that monoblock copper coin is bending to be formed, make the contact area at its back side and work copper plate working surface be impartial to the thickness in liquid cooling face; All contact with cooling agent work whole of the copper coin back side, increase the effect of heat conduction, while matrix face with inverted trapezoidal similar to shape, increase thermal conductive surface.
The cylinder boss be connected as a single entity with it is set at the work copper coin back side, and screw thread is set on the top of cylinder boss, make it possess the function of bolt, can be set on backboard, then by nut, backboard and work copper coin are fixed; Arrange chromium coating in thread surface, it can ensure that screw thread possesses very strong hardness, improves the working strength of screw thread, ensure that the stabilized soil pavement of connection; In order to ensure gap between work copper coin and backboard size can on cylinder boss the version of setting table terrace or cylinder, ensure the stable of the cooling agent gap of backboard and work copper coin, simultaneously in order to ensure the quick flowing of cooling agent, pod apertures is set in cylinder boss bottom, ensures the flowing of cooling agent; The cylinder adopted can in bottom, middle part, top or be all designed to Openworks shape, increase cooling agent and the contact area at the work copper coin back side further with this, do not affect the bonding strength of work copper coin and backboard simultaneously.
Applicant draws the appearance can not only avoiding right angle in the scope of 20 ~ 35 ° after making a large amount of research experiment, and right angle is become obtuse angle, planarea is formed uniform excessively face, increases the contact surface of steel billet and copper coin, improve heat conducting effect; The initiating terminal of fillet surface is arranged on by work copper coin center to dual-side distance 1/2 ~ 2/3 simultaneously, narrow boards can be made not only to form mild curved surface but also comparatively mild angle can be formed with wide plate, the billet surface quality obtained under both mutual synergies and corner best in quality; Further, two fillet surfaces of work copper coin can be set to the arc surface caved inward, the effect improving heat conduction with the contact area of copper coin can be increased, also make steel plate surface Homogeneouslly-radiating, avoid the seminess that Partial Rapid-cold causes.
The utility model can arrange sealed wall adding man-hour on backboard, can ensure the sealing of cooling fluid, also can directly and crystallizer wide plate form annular water tank, when ensureing that mould assembly is stable, obtain best heat-conducting effect; Avoid the situation of local copper coin temperature distortion, this device is ensureing heat-conducting effect and can improve billet quality, extends the service life of copper coin.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is the partial structurtes schematic diagram of angle α of the present utility model;
Fig. 3 is another kind of structural representation of the present utility model;
Fig. 4 is the structure enlarged diagram at the utility model embodiment a connection piece place;
Fig. 5 is the structure enlarged diagram at the utility model embodiment two connector place;
Fig. 6 is the structure enlarged diagram at the utility model embodiment three connector place;
Fig. 7 is the structure enlarged diagram of the utility model pilot hole;
Fig. 8 is the structure enlarged diagram of the utility model cylinder.
Detailed description of the invention
In order to further instruction superiority of the present utility model, performance of the present utility model is carried out to the test of different pieces of information:
First group: adopt identical copper plate of crystallizer to adopt plane copper coin and the form be fixedly connected with of backboard, conventional chamfering narrow boards and version of the present utility model respectively, test the cracks of steel billet, corner cracking rate and service life respectively, the experimental data of acquisition is as shown in the table:
| Title | Cracking breakout % | Corner cracking rate % | Service life (ten thousand tons) |
| Plane copper coin is fixedly connected with backboard | 7～8 | 8～11 | 8～10 |
| Conventional chamfering narrow boards | 5～6 | 4～6 | 5～7 |
| The utility model | 0.5～1.2 | 0.6～1.5 | 12～14 |
Note: this group experiment test is the data that production 200 ~ 240 millimeters of corrosion resistant plates obtain, and carries out testing the average range value obtained continuously to 200 complete equipments.
Although adopt identical copper plate of crystallizer to be all applied in the stainless steel continuous casting crystallizer of production 200 ~ 240 mm of thickness as can be seen from the above table, continuously produce through 200 complete equipments and obtain mean values and can find out, the utility model not only reduces cracking breakout and corner cracking rate and have also been obtained service life and promotes and do not increase cost greatly; And although plane copper coin is fixedly connected with its long service life with backboard, but still there is higher corner cracking rate and cracking breakout, but although and conventional chamfering narrow boards cracking breakout and corner cracking rate not good for its service life lower, and the utility model has not only taken into account its respective advantage and surprisingly its performance promotes greatly.
Second group: adopt connected mode of the present utility model, conventional boss bolt to connect and be connected with plane bolt, measuring unit area (1 square metre) work copper coin obtains same intensity bolt quantity used and service life respectively, and the data of acquisition are as follows:
| Title | Bolt quantity | Service life (ten thousand tons) |
| The utility model connected mode | 60～80 | 12～14 |
| Conventional boss bolt connects | 100～120 | 8～10 |
| Plane bolt connects | 180～200 | 6～8 |
Note: this group experiment test 200 times, the copper coin boss area of testing employing 1.8 meters long is 4 ~ 8 square centimeters, and the bolt of employing is the average data of the closely-pitched Steel Bolt acquisition of M16/M12.
Although all adopt identical bolt as can be seen from the above table, but want to obtain identical bonding strength, what the utility model only needed 60 ~ 80 its representatives is the quantity of cylinder boss that the utility model works copper coin back side is arranged, and conventional boss bolt connection is connected with plane bolt, it causes the thermal conductive surface at the work copper coin back side to reduce owing to arranging bolt quantity at most, but the bolt of One's name is legion does not increase service life, and the utility model not only Stability Analysis of Structures but also thermal conductive surface increase, service life is increased greatly.
3rd group: adopt version of the present utility model, the initiating terminal of fillet surface is set to respectively at 1/2,3/5,2/3 place, and adopt the fillet surface of 20,25,30 and 35 ° of angles, test the Corner Cracks rate of steel billet, the surface quality of steel billet and service life respectively, the data of acquisition are as follows:
| Title | Face crack rate % | Service life (ten thousand tons) | Corner cracking rate % |
| 1/2 20 °, place | 1.19 | 12.8 | 0.93 |
| 3/5 20 °, place | 0.85 | 13.8 | 1.35 |
| 2/3 20 °, place | 0.96 | 12.3 | 1.48 |
| 1/2 25 °, place | 0.99 | 12.6 | 1.50 |
| 3/5 25 °, place | 0.68 | 12.9 | 0.95 |
| 2/3 25 °, place | 1.03 | 13.1 | 1.11 |
| 1/2 30 °, place | 1.11 | 13.5 | 1.25 |
| 3/5 30 °, place | 0.502 | 14.05 | 0.604 |
| 2/3 30 °, place | 0.66 | 13.7 | 0.69 |
| 1/2 35 °, place | 0.76 | 12.2 | 1.03 |
| 3/5 35 °, place | 0.69 | 13.4 | 0.96 |
| 2/3 35 °, place | 0.97 | 12.8 | 1.49 |
Note: this group experiment test is every test 200 times, the 2.8 meters of long copper coins producing 320*280mm square billet are set to the initiating terminal of fillet surface respectively at 1/2,3/5,2/3 place, and adopt the average data that the fillet surface of 20,25,30 and 35 ° of angles obtains.
Arranging fillet surface at 3/5 place is as can be seen from the above table initiating terminal, and adopt the fillet surface of 30 ° of angles, combination property is best, not only long service life but also corner cracking rate and face crack rate all very low, make the qualification rate of product very high under its effect of mutually working in coordination with.
Superiority of the present utility model is further illustrated below in conjunction with accompanying drawing 1 ~ 8 specific embodiment:
Embodiment one:
A kind of metal continuous casting crystallizer liquid cooling narrow copper plate, comprise the work copper coin 1 that a back side is connected with backboard 2 by connector 3, described work copper coin 1 avris to work copper coin working face upper bend formed fillet surface 4, described connector 3 by it on setting projection and backboard 2 between form cooling agent gap 5.
Described fillet surface 4 is 20 ° with the horizontal plane angle α of work copper coin.
The initiating terminal of described fillet surface 4 is to dual-side distance 1/2 by work copper coin 1 center.
Described connector is that the back side of described work copper coin 1 arranges cylinder boss 33, and described cylinder boss 33 is designed to one with described work copper coin 1, and described cylinder boss 33 top arranges screw thread 35.
The projection of described connector 3 is the step surface 38 at cylinder boss place.
Described cylinder boss 33 bottom arranges pod apertures 32a.
The present embodiment arranges pod apertures in cylinder boss bottom, and it adds cooling agent and the contact surface at the work copper coin back side when not reducing structural strength, accelerate the effect of heat radiation.
Embodiment two:
The difference of itself and embodiment one is:
The work horizontal plane angle α of copper coin of described fillet surface and 4 is 25 °.
4 initiating terminals of described fillet surface are to dual-side distance 2/3 by work copper coin center.
Described connector is that the back side of described work copper coin 1 arranges cylinder boss 33, and described cylinder boss 33 is designed to one with described work copper coin 1, and described cylinder boss 33 top arranges screw thread 35.
The projection of described connector 3 is for being set in the cylinder 32b on cylinder boss.
Described cylinder 32b arranges pod apertures.
Cylinder arranges pod apertures can make cooling agent flow wherein, takes away the heat on cylinder boss and cylinder, accelerates radiating surface, decrease the resistance of cooling agent.
Embodiment three:
The difference of itself and embodiment two is: described fillet surface 4 is 30 ° with the horizontal plane angle α of work copper coin.
The initiating terminal of described fillet surface 4 is to dual-side distance 3/5 by work copper coin center.
Described connector is that the back side of described work copper coin 1 arranges cylinder boss 33, and described cylinder boss 33 is designed to one with described work copper coin 1, and described cylinder boss 33 top arranges screw thread 35.
The projection of described connector 3 is for being set in the cylinder 32b on cylinder boss.
Described cylinder 32b arranges pod apertures.
Screw thread place, described cylinder boss 33 top is disposed radially circular hole 34.
The hole inwall of described backboard 2 avris arranges the pilot hole 37 be communicated with backboard side.
In described circular hole 34 and pilot hole 37, rigidity tension rope 36 is set.
The back side of described backboard 2 is higher than the plane residing for circular hole 34.
Embodiment four:
A kind of metal continuous casting crystallizer liquid cooling narrow copper plate, comprise the work copper coin 1 that a back side is connected with backboard 2 by connector 3, described work copper coin 1 avris to work copper coin 1 working face upper bend formed arc-shaped, described connector 3 by it on setting projection and backboard 2 between form cooling agent gap 5.
Described work copper coin 1 is semiellipse shape with the cross section of backboard 2.
Oval long-chord and the ratio of short string are 3.5/1.
Described connector is that the back side of described work copper coin 1 arranges cylinder boss 33, and described cylinder boss 33 is designed to one with described work copper coin 1, and described cylinder boss 33 top arranges screw thread 35.
The projection of described connector 3 is the step surface 38 at cylinder boss place.
Screw thread place, described cylinder boss 33 top is disposed radially circular hole 34.
The hole inwall of described backboard 2 avris arranges the pilot hole 37 be communicated with backboard 2 side.
Arrange rigidity tension rope 36 in described circular hole 34 and pilot hole 37, described pilot hole 37 arranged outside fixture is strained rigidity tension rope 36.
The back side of described backboard 2 is higher than the plane residing for circular hole 34.
Described screw thread 35 surface arranges chromium coating.
The present embodiment, work copper coin is designed to semiellipse shape by it, further increase the working face of work copper coin, also increase the contact surface of to work in identical gap copper coin and steel billet simultaneously, milder by right-angle transition, further avoid the appearance of Corner Cracks, and rigidity tension rope is set in circular hole and pilot hole, it can ensure to provide a kind of outside tightening force by rigidity tension rope to cylinder boss after nut is fixed, what backboard and work copper coin were fixed is more firm, the pulling force of rigidity tension rope can be adjusted according to the actual needs simultaneously, best practical function is obtained with this.
Production practices, certain steel mill 3 medium thin slab height pulling rate casting machine crystallizers, ladleful 150t, size of plate blank is 900mm × 135mm, and conticaster radius is 5.3m, metallurgical length 24.5m, design pulling rate is 1.5 ~ 2.3m/min, obtain the cracking breakout 11 ~ 13% of steel plate, corner cracking rate is 10 ~ 11%, and this high pulling rate casting machine crystallizer average life span is 450 stoves.
After this crystallizer uses design of the present utility model, the steel plate cracking breakout obtained is 0.5 ~ 1%, corner cracking rate is 0.7 ~ 1.2%, decrease the generation ftractureed in steel plate crackle and corner, substantially increase the quality of product, this high pulling rate casting machine crystallizer average life span is simultaneously extended for 925 stoves, has increased substantially the life-span of continuous casting of middle-thin slabs crystallizer.
Claims (6)
1. metal continuous casting crystallizer liquid cooling narrow copper plate, comprise the work copper coin that a back side is connected with backboard by connector, it is characterized in that: working face upper bend from described work copper coin avris to described work copper coin formed fillet surface, described connector by it on setting projection and described backboard between form cooling agent gap.
2. metal continuous casting crystallizer liquid cooling narrow copper plate as claimed in claim 1, is characterized in that: the horizontal plane angle α of described fillet surface and described work copper coin is 20 ~ 35 °.
3. metal continuous casting crystallizer liquid cooling narrow copper plate as claimed in claim 1 or 2, is characterized in that: the initiating terminal of described fillet surface is to dual-side distance 1/2 ~ 2/3 by work copper coin center.
4. metal continuous casting crystallizer liquid cooling narrow copper plate as claimed in claim 1, it is characterized in that: described connector is that the back side of described work copper coin arranges cylinder boss, described cylinder boss and described work copper coin are designed to one, and described cylinder boss top arranges screw thread.
5. metal continuous casting crystallizer liquid cooling narrow copper plate as claimed in claim 4, is characterized in that: the projection on described connector is the step surface that described cylinder boss place is arranged or the cylinder be set on described cylinder boss.
6. metal continuous casting crystallizer liquid cooling narrow copper plate as claimed in claim 4, is characterized in that: described thread surface arranges chromium coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520712163.2U CN205043105U (en) | 2015-09-15 | 2015-09-15 | Continuous casting of metal crystallizer liquid cooling narrow face copper plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520712163.2U CN205043105U (en) | 2015-09-15 | 2015-09-15 | Continuous casting of metal crystallizer liquid cooling narrow face copper plate |
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| CN205043105U true CN205043105U (en) | 2016-02-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105108084A (en) * | 2015-09-15 | 2015-12-02 | 西峡龙成特种材料有限公司 | Liquid cooling narrow-face copper plate for metal continuous casting crystallizer |
| CN109822065A (en) * | 2019-04-11 | 2019-05-31 | 安徽工业大学 | The wide face copper sheet and the continuous cast mold with the copper sheet of a kind of continuous cast mold |
-
2015
- 2015-09-15 CN CN201520712163.2U patent/CN205043105U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105108084A (en) * | 2015-09-15 | 2015-12-02 | 西峡龙成特种材料有限公司 | Liquid cooling narrow-face copper plate for metal continuous casting crystallizer |
| CN109822065A (en) * | 2019-04-11 | 2019-05-31 | 安徽工业大学 | The wide face copper sheet and the continuous cast mold with the copper sheet of a kind of continuous cast mold |
| CN109822065B (en) * | 2019-04-11 | 2024-03-22 | 安徽工业大学 | Wide-surface copper plate of continuous casting crystallizer and continuous casting crystallizer with same |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |