CN1872454A - Metal tape conticaster in reverse gravity line, and technique for continuous casting thin metal tape - Google Patents
Metal tape conticaster in reverse gravity line, and technique for continuous casting thin metal tape Download PDFInfo
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- CN1872454A CN1872454A CN 200510034888 CN200510034888A CN1872454A CN 1872454 A CN1872454 A CN 1872454A CN 200510034888 CN200510034888 CN 200510034888 CN 200510034888 A CN200510034888 A CN 200510034888A CN 1872454 A CN1872454 A CN 1872454A
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Abstract
A countergravitational conticasting machine for metallic band is composed of liquid-state metal pool, two cooling and casting rollers rotating in different directions, band drawing rollers and band winder. Its conticasting technology includes such steps as immersing two cooling and casting rollers in molten metal for coagulating a thin layer of metal, rotating them oppositely to drive the thin metal layer upward and squeeze it to form a metal band, guiding it to the band winder, and winding.
Description
Technical field
The present invention relates to a kind of continuous casting process and equipment of metal strip.
Background technology
Directly pouring into a mould thickness with conticaster is that 1～10mm is with the technology of steel to be called Casting steel strip or direct Casting steel strip.Before the idea of this Casting steel strip technology starts from more than 140 year, promptly 1856 Bessemers by Britain (Bessmer) proposition.Since then, worldwide carried out various experimental studies in order to reach this purpose, however not success.Its technology barrier is to inject the rotation control of liquid steel level control and chill roll and the clearance control between two rollers etc.Be the period of greatly developing traditional continuous casting the seventies in 20th century in the world; Maturation along with traditional continuous casting, the eighties twenties, a large amount of research efforts in the world are invested Casting steel strip, developmental research through more than 10 years, make a breakthrough at the Casting steel strip technical elements, that is engaged in this technology has states such as Japan, the U.S., Germany, Italy, France, Britain, Korea S, China, develops the conticaster research experiment and the half industrialness large-scale production test of more than 20 different type altogether.
Initial production cold belt steel at least will be through 4 big steps, i.e. die casting, cogging, Re Zha and cold rolling; The appearance of continuous casting reduces and falls the cogging operation, remaining continuous casting, heat bundle, cold rolling; The appearance of continuous casting and rolling, can be described as the revolution of steel and iron industry, only save little step of heating, the appearance of Casting steel strip directly saves the continuous casting and rolling operation, produce the following band steel of thickness 1mm, ((50～70mm) produce for 150～250mm) heavy slabs or sheet billet to adopt tradition, equipment investment reduces 40～50%, and production cost reduces 10～20%, energy savings 0.628GJ/ ton steel.This also is the basic reason place that a large amount of in the world research efforts, test strength are invested Casting steel strip.
Continuous casting of thin strip is to produce the most energy-conservation a kind of mode of production of band steel now, has the primary equipment small investment, the advantage that production cost is low, up to the present, the form that quantity is maximum the most ripe most typical Casting steel strip machine is a double-roll type Casting steel strip machine, but this type of Casting steel strip machine still also exists many technical problems not solve, as the problem that molten metal flows into and control is difficult, sealing problem between side shield and the roller hampers this type of continuous casting and applies.
Summary of the invention
The objective of the invention is to propose a kind of novel metal strip, the particularly continuous casting process of strip steel and equipment---contrary gravity vertical metal strap conticaster and metal strip continuous casting process thereof, to overcome the problem that existing metal strip continuous casting technology exists, further reduce the production cost and the equipment investment cost of metal strip, once cast out thinner high-quality metal strip.
The present invention proposes a kind of new continuous casting of metal strip machine and the metal strip continuous casting process of using this conticaster on the basis of the Casting steel strip machine of analyzing various countries, the designed contrary gravity vertical continuous casting of metal strip machine of the present invention adopts following technical pattern scheme: it comprises the liquid metal pool of being made by heat proof material, article two, roller is cast in cooling, leader tape roller and metal tape batch machine, article two, cooling casting roller is driven by drive unit, uniform rotation in the opposite direction, form two rollers to rolling upwards extrusion structure, leave extrusion slot between its adjacent roll surface, can between 1～10mm scope, adjust, the bottom of two rollers places liquid metal pool, the two positions of roller in liquid metal pool of servo-drive system control are arranged, in order to the leader tape roller of traction shaping metal tape be positioned at two cooling casting roller extrusion slots directly over, metal tape batches a side that machine is positioned at the leader tape roller in order to the form metal band is rolled into the roll coil of strip, and the inside of two cooling casting rollers have cooling chamber.
The diameter of the cooling casting roller in the contrary gravity vertical continuous casting of metal strip machine of the present invention can be 200～5000mm, and length can be 100～5000mm.
Use this contrary gravity vertical continuous casting of metal strip machine and produce metal strip by following metal strip continuous casting process:
Under the protection of protective gas, inject liquid metal to liquid metal pool; In liquid metal in the bottom immersion liquid metal pool of two cooling casting rollers, and keep constant immersion depth; Cooling chamber in two cooling casting rollers feeds cooling water cooling casting roller is forced cooling; Adjust the size of the extrusion slot of two cooling casting rollers to the description of being produced; When liquid metal after solidifying the thin metal of one deck on two cooling casting rollers, two cooling casting rollers are at the uniform velocity rotated by rightabout, be with thin metal layer to leave liquid metal pool, the metal foil belt on two cooling casting rollers is squeezed into a strip metal band at the extrusion slot casting roller that is cooled; Be squeezed into and metal tape break away from cooling casting roller after, draw by the leader tape roller, introduce metal tape again and batch machine and be rolled into the roll coil of strip.
Aborning, the degree of depth in the liquid metal of the bottom immersion liquid metal pool of two cooling casting rollers will reach 1～10mm, and keeps constant aborning.
The flow velocity that feeds the cooling water of two cooling chambers in the cooling casting roller will reach 6～12m/s.
The title of conticaster of the present invention and process form thereof is taken at the opposite working method with gravity vertical of the direction of motion of metal tape and names, its operation principle is: metal liquid is when touching chill roll, because the strong cooling effect of roller wall, the liquid metal solidification that contacts with roll surface becomes chill, chill is bonded with the casting roller, and chill forms thin strand along with the rotation progressive additive of casting roller; Simultaneously the thin stock layer is because cooling is shunk can break away from by the roller wall, along with the thin stock pull-up from roll surface, can weaken the base shell and grow up; The thin stock layer leaves molten steel under the acting in conjunction that forms band steel tractive force, cohesion, ferrostatic pressure, centrifugal force; Along with roller turn, two thin stock layers enter crush zone, are squeezed, and produce distortion in a large number---and similar rolling, the base shell produces advancing slip and back the cunning and breaks away from the casting roller, forms the band steel; The band steel that forms enters coiling machine by the traction of leader tape device, is rolled into thin coiled stock.
The continuous casting ratio of continuous casting of metal strip technology of the present invention and existing band steel has: 1. simplify level control, 2. simplify the material inlet system; 3. remove side seal board and sealing problem, 4. reduce production accident, increase when effectively producing machine, output increases, and 5. saves refractory material, and 6. production cost further reduces more than 21.3%, 7. can produce the advantage of thinner metal tape etc.
Come the advantage of the steel grade that the production demand is few, difficulty is out of shape still for outstanding, as ultrathin hot rolled silicon strip, stainless steel with this conticaster; Casting to non-ferrous metal copper aluminium also has huge advantage.
Description of drawings
Fig. 1 is a continuous casting of thin strip machine schematic diagram of the present invention.
The specific embodiment
A kind of contrary gravity vertical Casting steel strip machine embodiment of the present invention as shown in drawings, 1 causes liquid metal pool for heat proof material; 2 is the cooling casting roller of two casting metal tapes; 3 is the leader tape roller, is a cover metal tape ejector; 4 batch machine for metal tape.
Two cooling casting roller diameters of this conticaster are 1000mm, and length is 2000mm.Article two, cooling casting roller is equipped with drive unit driving two reverse uniform rotation of roller, and the two positions of roller in liquid metal pool of servo-drive system control are arranged.
Producing thickness with this conticaster is that the continuous casting process of steel band of 1mm is as follows:
Under the protection of protective gas, inject molten steel to liquid metal pool 1; In molten steel in the bottom immersion liquid metal pool of two cooling casting rollers 2, immersion depth is 10mm; Cooling chamber in two cooling casting rollers feeds cooling water cooling casting roller is forced cooling; The extrusion slot of adjusting two cooling casting rollers is to being a bit larger tham 1mm; When liquid metal after solidifying the thin strand of one deck on two cooling casting rollers, two cooling casting rollers are at the uniform velocity rotated by rightabout, be with thin strand belt to leave liquid metal pool, the strip layer on two cooling casting rollers is squeezed into a thin steel band at the extrusion slot casting roller that is cooled; Be squeezed into and thin steel band break away from cooling casting roller after, draw by leader tape roller 3, introduce metal tape again and batch machine 4 and be rolled into the roll coil of strip.In the steel band casting process, constant by the immersion depth maintenance of bottom in the molten steel of liquid metal pool of two cooling castings of servo-drive system control roller.
Claims (5)
1. contrary gravity vertical continuous casting of metal strip machine, it is characterized in that comprising the liquid metal pool of making by heat proof material (1), article two, roller (2a is cast in cooling, 2b), leader tape roller (3) and metal tape batch machine (4) and constitute, article two, roller (2a is cast in cooling, 2b) drive by drive unit, uniform rotation in the opposite direction, form two rollers to rolling upwards extrusion structure, leave extrusion slot between its adjacent roll surface, can between 1～10mm scope, adjust, the bottom of two rollers places liquid metal pool (1), the two positions of roller in liquid metal pool (1) of servo-drive system control are arranged, in order to the leader tape roller (3) of traction shaping metal tape be positioned at two cooling casting roller extrusion slots directly over, metal tape batches a side that machine (4) is positioned at leader tape roller (3) in order to the form metal band is rolled into the roll coil of strip, and the inside of two cooling casting rollers have cooling chamber.
2. contrary gravity vertical continuous casting of metal strip machine according to claim 1 is characterized in that the diameter of said cooling casting roller (2a, 2b) is 200～5000mm, and length is 100～5000mm.
3. adopt the metal strip continuous casting process of the described contrary gravity vertical continuous casting of metal strip machine of claim 1, it is characterized in that: under the protection of protective gas, inject liquid metal to liquid metal pool (1); The bottom of two cooling casting rollers (2a, 2b) is immersed in the middle liquid metal of liquid metal pool (1), and kept constant immersion depth; Cooling chamber in two cooling casting rollers feeds cooling water cooling casting roller is forced cooling; Adjust the size of the extrusion slot of two cooling casting rollers to the description of being produced; When liquid metal after solidifying the thin metal of one deck on two cooling casting rollers, two cooling casting rollers (2a, 2b) are at the uniform velocity rotated by rightabout, be with thin metal layer to leave liquid metal pool, the metal foil belt on two cooling casting rollers is squeezed into a strip metal band at the extrusion slot casting roller (2a, 2b) that is cooled; Be squeezed into and metal tape break away from cooling casting roller after, draw by leader tape roller (3), introduce metal tape again and batch machine (4) and be rolled into the roll coil of strip.
4. metal strip continuous casting process according to claim 3 is characterized in that the degree of depth that two coolings are cast in the liquid metal that immerses liquid metal pool (1) in the bottom of rollers (2a, 2b) is 1～10mm.
5. metal strip continuous casting process according to claim 3, it is characterized in that feeding two flow velocitys that cool off the cooling water of the cooling chamber in the casting rollers (2a, 2b) is 6～12m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510034888 CN1872454A (en) | 2005-06-02 | 2005-06-02 | Metal tape conticaster in reverse gravity line, and technique for continuous casting thin metal tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510034888 CN1872454A (en) | 2005-06-02 | 2005-06-02 | Metal tape conticaster in reverse gravity line, and technique for continuous casting thin metal tape |
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| Publication Number | Publication Date |
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| CN1872454A true CN1872454A (en) | 2006-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510034888 Pending CN1872454A (en) | 2005-06-02 | 2005-06-02 | Metal tape conticaster in reverse gravity line, and technique for continuous casting thin metal tape |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109158560A (en) * | 2018-10-18 | 2019-01-08 | 山东钢铁股份有限公司 | The double roller continuous casting production system and production method of composite board |
-
2005
- 2005-06-02 CN CN 200510034888 patent/CN1872454A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109158560A (en) * | 2018-10-18 | 2019-01-08 | 山东钢铁股份有限公司 | The double roller continuous casting production system and production method of composite board |
| CN109158560B (en) * | 2018-10-18 | 2023-09-29 | 山东钢铁股份有限公司 | Double-roller continuous casting production system and production method of composite board |
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