CN108705057A - A kind of roller belt-type thin-belt casting rolling all-in-one machine and its application method - Google Patents

Abstract

The invention discloses a roll-type thin strip casting-rolling integrated machine and a using method thereof, which belong to the field of iron and steel casting. The roll-type thin strip casting-rolling integrated machine includes a tundish, a belt conveying device, a continuous casting mechanism and a continuous rolling mechanism; the belt conveying device includes an inclined conveying steel belt; The continuous rolling mechanism is arranged above the conveying steel strip, and is arranged in order from high to low along the conveying direction of the conveying steel strip; the continuous casting mechanism includes a water-cooled crystallization roller, and the coincidence point is between the water-cooled crystallization roller and the surface of the conveying steel strip; The continuous rolling mechanism includes a hot roll, and a rolling gap is formed between the hot roll and the surface of the conveying steel strip. The present invention combines casting and rolling closely through process optimization and improvement, makes the layout more compact, reduces the space occupied by the production line, and can control the thickness of the thin strip during casting and rolling, reducing the occurrence of loose shrinkage cavities in the thin strip, and improving Productivity.

Description

A roll-type thin strip casting-rolling integrated machine and its application method

technical field

The invention belongs to the field of iron and steel casting, and more specifically relates to a roll-type thin-strip casting-rolling integrated machine and a use method thereof.

Background technique

In the current field of iron and steel smelting, continuous casting and rolling technology is widely used in rolling plates and strips. As shown in Figure 1, the full name of continuous casting and rolling is continuous casting and rolling. It is to pour molten steel into the crystallizer of the continuous casting machine to cast thin slabs or strips of a certain thickness, and then, without cooling, in the uniform After being kept in the hot furnace for a certain period of time, it is a steel rolling process that is rolled and formed in the hot tandem rolling unit through the traction of the pinch rollers.

Rolling technology is a pressure processing method in which the steel billet passes through the gap between a pair of rotating rolls, and the cross-section of the material is reduced and the length is increased due to the compression of the rolls. According to the heating state of the billet, rolling can be divided into two methods: hot rolling and cold rolling. Hot rolling can make the bubbles, cracks and looseness formed during pouring be welded under the action of high temperature and pressure, so as to make the billet structure dense and improve the quality of the billet. In the continuous casting and rolling technology, the poured steel slab often needs to be kept in the soaking furnace for a certain period of time, and then it is pulled by the pinch roller and then enters the hot continuous rolling mill for rolling and forming, so it also needs to go through a certain transmission distance.

The continuous casting machines commonly used in continuous casting and rolling technology can be roughly divided into three categories according to the type of mold, including twin-roll type, double-belt type, and roll-belt type. Among them, the twin-roller continuous casting machine is widely used. It injects molten steel into the molten pool composed of two counter-rotating water-cooled crystallization rolls and side sealing plates. As shown in Figure 2, the molten steel and two water-cooled crystallization After the rollers come into contact, a separate solidification shell is formed on the surface of each water-cooled crystallization roll, and the formed solidification shell moves downward with the rotation of the water-cooling crystallization roll. The shell is pressed together by water-cooled crystallizing rolls to form a solid thin slab or strip, which is then conveyed through pinch rolls and hot rolled to reduce it to the desired size.

The thin slabs cast by the twin-roll continuous casting and rolling mill often need to be held in the soaking furnace for a certain period of time, and then, through the traction of the pinch rollers, enter the hot continuous rolling unit for rolling and forming, which prolongs the production process line and takes up space. Large, the production cost increases. In addition, in the twin-roll continuous casting and rolling mill, steel leakage is prone to occur at the joint point of the twin rolls during the continuous casting process. For example, the Chinese patent application number is: 201510006848.X, and the publication date is: the patent document on April 29, 2015, which discloses a thin strip continuous casting device. In the process of casting a relatively thick thin slab, the molten steel in the middle of the matching point is not completely solidified, and the molten steel is also prone to leakage at this matching point, which is called breakout.

The double-belt continuous casting and rolling mill is to inject the molten steel in the tundish into the gap between the upper and lower conveying steel belts. The upper and lower conveying steel belts have a cooling water circulation system. Under rapid solidification to form a thin slab, the thin slab strip is then conveyed through pinch rolls and hot rolled to reduce it to the desired size. However, the thin slab cast by the double-belt continuous casting machine usually needs to be held in the soaking furnace for a certain period of time, and then it is pulled by the pinch roller and then rolled into the hot continuous rolling unit for rolling and forming, resulting in an extension of the production process line. It takes up a lot of space and increases the production cost. Furthermore, due to the cold double conveyor belts of the twin-belt continuous casting machine, the solidification speed of the molten steel is very fast. Solidification occurs, causing the cast thin slab to be incomplete, which is not conducive to casting a thin slab with a relatively small thickness, and the casting speed is relatively low.

The belt-roller continuous casting machine is relatively less concerned at present. For example, the application number is: 2014108382394, and the publication date is: the patent document on April 15, 2015, which discloses a belt-roller continuous casting machine and a Machine thin strip casting and rolling equipment. The working principle of the roll-belt continuous casting machine is that the molten steel stored in the tundish is sprayed onto the roll surface of the water-cooled crystallization roll above the horizontal axis section through the nozzle, and the molten steel on the roll surface begins to solidify and rotates with the water-cooling crystallization roll It enters the casting belt conveying area formed by the water-cooled crystallization roller and the metal conveyor belt, and then after being further solidified and cooled by the water-cooled crystallization roller and the casting belt conveying part, the cast slab is formed, and finally, the cast slab is conveyed from the bottom of the water-cooled crystallization roller. However, the roll belt continuous casting machine requires molten steel to be poured into billets in the roll belt continuous casting machine. The belt continuous casting machine is far away from the warm rolling machine, and the casting billet cannot be rolled immediately when it is formed, and the loose shrinkage cavity in the casting belt cannot be effectively reduced. At the same time, the production process is long and takes up a lot of space. On the other hand, the roll-belt continuous casting machine in the casting-rolling equipment uses molten steel stored in the tundish to spray onto the roll surface of the water-cooled crystallization roll above the horizontal axis section through the nozzle. Other devices limit the range where the molten steel is sprayed. Therefore, not only the width of the obtained slab cannot be fixed, but also the molten steel sprayed from the nozzle will be scattered, resulting in waste.

Contents of the invention

1. Problems to be solved

The invention provides a roll-type thin strip casting-rolling integrated machine, the main purpose of which is to solve the problem that the existing continuous casting and rolling production line occupies a large area and the produced thin strip is prone to loose shrinkage cavities. The roll-type thin strip casting-rolling integrated machine combines casting and rolling closely through process optimization and improvement, making the layout more compact, reducing the space occupied by the production line, and controlling the thickness of the thin strip during casting and rolling, reducing the thickness of the thin strip. The appearance of loose shrinkage cavities improves production efficiency.

The present invention also provides a method for using the roll-type thin strip casting-rolling integrated machine, which can perform casting and rolling forming at one time without disconnection, and efficiently produce thin strips.

2. Technical solution

In order to solve the above problems, the present invention adopts the following technical solutions.

A roll-type thin strip casting-rolling integrated machine, comprising a tundish, a belt conveying device, a continuous casting mechanism and a continuous rolling mechanism; Both the casting mechanism and the continuous rolling mechanism are arranged above the conveying steel strip, and are arranged in sequence from high to low along the conveying direction of the conveying steel strip; the continuous casting mechanism includes a water-cooled crystallization roller, and the surface of the water-cooled crystallization roller and the conveying steel strip are consistent point; the continuous rolling mechanism includes a hot roll, and a rolling gap is formed between the hot roll and the surface of the conveying steel strip.

As a further improvement, a pair of side sealing plates are arranged on both sides along the conveying direction above the conveying steel belt.

As a further improvement, an intrusive nozzle is provided at the bottom of the tundish, and the lower end of the intrusive nozzle leads to a surface close to the conveying steel belt.

As a further improvement, the two ends of the conveying steel belt are respectively sleeved on the driving roller and the driven roller, and the main roller cooling water pipe and the slave roller cooling water pipe are respectively arranged in the center of the driving roller and the driven roller along the axial direction.

As a further improvement, the belt conveyor further includes a water-cooling device for cooling the conveying steel belt; the water-cooling device includes a plurality of steel-belt water-cooling pipes arranged near the inner side of the conveying steel belt.

As a further improvement, the belt conveyor also includes an angle adjustment device for adjusting the inclination angle of the conveying steel belt; The moving roller is connected with two driving cylinders close to the two ends of the supporting beam respectively.

As a further improvement, the continuous casting mechanism further includes a continuous casting drive assembly for driving the rotation of the water-cooled crystallization roller, and the continuous casting drive assembly includes a continuous casting drive roller in driving contact with the water-cooled crystallization roller.

As a further improvement, the water-cooled crystallization roll includes a roll core and a roll ring sleeved outside the roll core; a roll cooling water pipe is arranged in the center of the roll core along the axial direction.

As a further improvement, the continuous rolling mechanism further includes a hot rolling drive assembly for driving the hot rolls to rotate, and a roll lifting assembly for driving the hot rolls to move to adjust the rolling gap.

A method for using a roll-type thin strip casting-rolling integrated machine, the steps of which are as follows: first, the molten steel in the tundish flows onto the conveying steel belt, and flows into the molten pool between the conveying steel belt and the water-cooled crystallization roller; then , the molten steel in contact with the conveying steel belt and the water-cooled crystallization roller solidifies, and forms two solidified shells on the surface of the conveying steel belt and the water-cooled crystallization roller. Pressing is carried out at the matching point, and a cast strip with a certain thickness is formed after pressing; then, the cast strip enters the rolling gap between the hot rolling roll and the conveying steel strip along with the conveying steel strip for rolling; finally, along with the hot rolling roll Rotate, the cast strip formed into the required thickness after hot rolling passes out from the bottom of the hot roll to obtain a thin strip.

3. Beneficial effects

Compared with the prior art, the beneficial effects of the present invention are:

(1) Roller belt type thin strip cast-rolling integrated machine of the present invention organically combines the continuous casting mechanism and the continuous rolling mechanism through the belt conveying device. Before cooling, it is rolled through the rolling mechanism immediately to obtain a thin plate, so that the casting and rolling are closely combined, the production process is short, the layout is more compact, the space occupied by the production line is reduced, and the loose shrinkage cavity in the cast strip is also effectively reduced. ; and the conveying steel belt adopts inclined setting, which can not only ensure the casting and rolling speed, but also avoid steel leakage; The disadvantages of shrinkage porosity and shrinkage cavity, and the disadvantages of the double-belt casting machine that it is difficult to produce a complete casting belt, the casting speed is slow, and it is not conducive to casting a casting belt with a relatively small thickness.

(2) The roll-type thin strip casting-rolling integrated machine of the present invention, the two sides of the conveying steel strip are restricted by side sealing plates, which not only serve as the molten pool, but also serve as a fixed mold to ensure the consistency of the hot-rolling direction of the cast strip .

(3) The roll-type thin strip casting-rolling integrated machine of the present invention, in the belt conveying device, the conveying steel strip is cooled by a water cooling device, which can ensure that the conveying steel strip will not overheat and affect the quality of the cast strip, and will also make the steel strip in the The molten steel in the molten pool that is in contact with the conveying steel belt solidifies rapidly into a solidified shell, and the driving roll and the driven roll pass through the cooling water pipe of the main roller and the cooling water pipe of the slave roller in the center respectively to cool down, thereby reducing the temperature of the conveying steel belt; continuous casting The roll cooling water pipe at the center of the water-cooled crystallization roller in the mechanism is cooled by water, which can not only ensure that the water-cooled crystallization roller will not overheat and affect the quality of the cast belt, but also make the molten steel in contact with the water-cooled crystallization roller quickly solidify into a solidification shell. All cooling and cooling measures are to prevent overheating and damage to equipment during the casting and rolling process.

(4) The roll-type strip casting-rolling integrated machine of the present invention can control the thickness of the molten steel during continuous casting to the casting strip forming through the angle adjustment device; The size of the manufacturing gap, that is, the amount of hot rolling.

Description of drawings

Fig. 1 is the schematic diagram of the basic principle of casting and rolling thin strip forming;

Fig. 2 is the schematic diagram of the basic principle of twin-roll continuous casting machine;

Fig. 3 is a structural schematic diagram of a roll-type thin strip casting-rolling integrated machine of the present invention;

Fig. 4 is a schematic cross-sectional view of the roll-type thin strip casting-rolling integrated machine of the present invention along the center of the roll;

Fig. 5 is a schematic view of the end face of the water-cooled crystallization roll in the roll-type thin strip casting-rolling integrated machine of the present invention.

In the figure: 100, tundish; 110, intrusive nozzle; 200, belt conveying device; 210, conveying mechanism; 211, driven roller; 212, driving roller; 213, conveying steel belt; 214, cooling water pipe from roller; 215. Main roll cooling water pipe; 220. Angle adjustment device; 221. Support beam; 230. Side sealing plate; 240. Water cooling device; 300. Continuous casting mechanism; 313, roll cooling water pipe; 320, continuous casting drive assembly; 400, continuous rolling mechanism; 410, hot rolling roll; 420, hot rolling driving assembly; 430, roll lifting assembly.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

Example 1

As shown in Fig. 3 and Fig. 4, a roll-type thin strip casting-rolling integrated machine in this embodiment mainly includes a tundish 100, a belt conveying device 200, a continuous casting mechanism 300 and a continuous rolling mechanism 400, through four parts The organic combination realizes continuous casting and continuous rolling operations. The structure of each part will be described in more detail below.

The belt conveying device 200 includes a conveying mechanism 210 and a side sealing plate 230 . Wherein, conveying mechanism 210 comprises driving roller 212, driven roller 211 and conveying steel belt 213, and conveying steel belt 213 is arranged obliquely, and in the viewing angle shown in the accompanying drawing, its left side is higher than right side bottom, has certain angle relative to horizontal plane; The two ends of the steel belt 213 are sleeved on the driving roller 212 and the driven roller 211 respectively, and the driving roller 212 is driven by a motor to realize the conveying movement of the steel belt 213 . In this embodiment, a main roller cooling water pipe 215 and a slave roller cooling water pipe 214 are arranged at the centers of the driving roller 212 and the driven roller 211 in the axial direction, and cooling water can be used to cool the driving roller 212 and the driven roller 211 , prevent from burning out, also can carry out cooling to conveying steel belt 213. Here, both the driving roller 212 and the driven roller 211 are composite rollers, composed of a roller core and a roller ring fixed outside the roller core.

The conveying steel belt 213 is the most direct part to bear the molten steel, and the temperature it bears is relatively high, and the molten steel needs to be solidified on the surface of the conveying steel belt 213. Cooling water cooling device 240 . The structural form of the water cooling device 240 is not specifically limited, as long as it can effectively cool the conveying steel belt 213. Here, the water cooling device 240 includes a plurality of steel strip water cooling tubes arranged near the inner side of the conveying steel belt 213. Cooling with water can not only ensure that the conveying steel belt 213 will not overheat and affect the quality of the cast strip, but also make the molten steel in contact with the conveying steel belt 213 solidify rapidly into a solidification shell. As can be seen from the accompanying drawings, the steel strip water-cooled pipes are arranged in two rows on the inner side of the conveying steel belt 213, respectively arranged near the inner sides of the upper and lower sections of the conveying steel belt 213, and can effectively cool down in the entire length direction, so that the conveying steel The belt 213 can be cooled relatively uniformly.

The tundish 100, the continuous casting mechanism 300 and the continuous rolling mechanism 400 are all arranged above the conveying steel belt 213, and arranged in order from high to low along the conveying direction of the conveying steel belt 213, and they are arranged in order from left to right in the drawings. It is set so that the molten steel first falls from the tundish 100 onto the conveying steel belt 213, then casts through the continuous casting mechanism 300, and then rolls and forms through the continuous rolling mechanism 400, and finally obtains a thin strip.

The tundish 100 is used to hold the molten steel and pass the molten steel to the conveying steel belt 213. Its cross-sectional shape is a trapezoid with a large top and a small bottom, which is convenient for the molten steel to flow out. The bottom of the tundish 100 is provided with an intrusive nozzle 110 , and the lower end of the intrusive nozzle 110 is connected to the surface of the conveying steel belt 213 to prevent secondary oxidation and molten steel splashing of the injection flow of the tundish 100 .

The continuous casting mechanism 300 is used for casting under the cooperation of the belt conveyor 200 , which includes a water-cooled crystallization roller 310 and a continuous casting drive assembly 320 . Wherein, the coincidence point is between the water-cooled crystallization roller 310 and the surface of the conveying steel belt 213; the continuous casting driving assembly 320 is used to drive the water-cooling crystallization roller 310 to rotate, and it includes a continuous casting driving roller in transmission contact with the water-cooling crystallization roller 310, and the continuous casting driving The rollers are driven to rotate by a motor, so that the motor drives the continuous casting drive roller to drive the water-cooled crystallization roller 310 to rotate, thereby realizing the casting movement. The direction of rotation of the water-cooled crystallization roller 310 is opposite to the direction of the conveying steel belt 213. From the drawings, the water-cooling crystallizing roller 310 rotates counterclockwise, and the conveying steel belt 213 moves clockwise, thereby conveying the steel forward.

As shown in FIG. 5 , the water-cooled crystallization roll 310 is a composite roll, which includes a roll core 312 and a roll ring 311 sleeved outside the roll core 312 , and the roll ring 311 contacts and drives the continuous casting drive roll. It should be noted that the roller core 312 and the roller ring 311 can be connected by bearings, and the center of the roller core 312 is provided with a roller cooling water pipe 313 along the axial direction, which can ensure that the water-cooled crystallization roller 310 will not overheat and affect the casting process. Belt quality also can make the molten steel contacted with the water-cooled crystallization roll 310 solidify rapidly into a solidification shell.

The continuous rolling mechanism 400 is used to cooperate with the belt conveyor 200 to roll the cast strip, and it includes a hot rolling roll 410 and a hot rolling driving assembly 420 . Wherein, hot rolling roll 410 is positioned at the top of conveying steel strip 213, and forms rolling gap with conveying steel strip 213 surfaces; Contact with the hot roll 410 for transmission, and driven by a motor, thereby driving the hot roll drive roll under the action of the motor to drive the hot roll 410 to realize the rolling action. Similarly, the structure of the hot rolling roll 410 is similar to that of the water-cooled crystallization roll 310, and it is also composed of a roll core and a roll ring, but the width of the roll core should be greater than the width of the roll ring, and the excess width of the roll core is used for the installation of other parts, and the roll The center of the core is provided with a hot rolling cooling water pipe, through which the hot rolling roll 410 can be cooled down, and the whole hot rolling roll 410 will be overheated.

It is worth noting that the molten steel is not limited in the width direction of the conveying steel belt 213, which is not conducive to the entire continuous casting and rolling production, and is not conducive to product quality; A pair of side sealing plates 230 are provided, and the side sealing plates 230 are made of refractory materials to restrict the molten steel, not only serve as a melting pool, but also serve as a fixed mold to ensure the consistency of the hot rolling direction of the cast strip. The space surrounded by a pair of side sealing plates 230, the conveying steel belt 213 and the water-cooled crystallization roller 310 forms a molten pool, and the lower end of the intrusive nozzle 110 is inserted into the molten pool. The distance between a pair of side sealing plates 230 should be equal to the width of the roll ring 312 of the water-cooled crystallization roll 310 and the roll ring width of the hot rolling roll 410 to ensure effective cooperation between the side seal plate 230 and the water-cooling crystallization roll 310 without steel breakout , to ensure that the side sealing plate 230 is effectively matched with the hot roll 410 to reduce the friction loss between the two and ensure the consistency of the hot rolling direction of the cast strip.

When adopting the above-mentioned roll-type strip casting-rolling integrated machine for continuous casting and rolling production, first, the molten steel in the tundish 100 flows onto the conveying steel strip 213 through the intrusive nozzle 110, and then flows into the conveying steel strip 213 and the water-cooled crystallization roll 310 in the molten pool; then, the molten steel in contact with the conveying steel belt 213 and the water-cooled crystallization roller 310 solidifies, forming two solidification shells on the surface of the conveying steel belt 213 and the water-cooling crystallization roller 310, and the two solidification shells follow the The reverse rotation of the conveying steel belt 213 and the water-cooled crystallization roller 310 is pressed at the matching point, and a cast belt of a certain thickness is formed after pressing; then, the cast belt enters the hot rolling roller 410 and the conveying steel belt along with the conveying steel belt 213. Rolling is carried out in the rolling gap between the strips 213; finally, with the rotation of the hot rolling roll 410, the cast strip formed into the required thickness after hot rolling passes out from the bottom of the hot rolling roll 410 to obtain a thin strip. It should be noted that, during the continuous casting and rolling process, the rotational speed of the water-cooled crystallization roll 310 should be the same as that of the conveying steel belt 213, while the rotational speed of the hot rolling roll 410 should be slightly greater than the conveying speed of the conveying steel belt 213 to ensure that the casting The coordination of rolling prevents the cast strip from forming a backlog on the transfer steel belt 213 between the water-cooled crystallization roll 310 and the hot rolling roll 410.

It can be seen from the above that the roll-type thin strip casting-rolling integrated machine of this embodiment organically combines the continuous casting mechanism 300 and the continuous rolling mechanism 400 through the belt conveying device 200, and the molten steel first passes through the continuous casting mechanism 300 in the molten pool. Casting into cast strips, and rolling through the continuous rolling mechanism 400 immediately before cooling, to obtain thin strips, so that the casting and rolling are closely combined, the production process is short, the layout is more compact, and the production line occupies less space. Effectively reduce loose shrinkage cavities in the casting belt; and the conveying steel belt 213 adopts an inclined setting, which can not only ensure the casting and rolling speed, but also prevent steel leakage; The disadvantages of breakouts and shrinkage cavities in the casting machine are easy to occur, and the disadvantages of the double-belt casting machine are that it is difficult to produce a complete casting strip, the casting speed is slow, and it is not conducive to casting a thin-thick casting strip.

Example 2

A roll-type thin strip casting-rolling integrated machine of this embodiment is further improved on the basis of the structure of Embodiment 1, an angle adjustment device 220 is added to the belt conveyor 200, and rolls are added to the continuous rolling mechanism 400 Lifting assembly 430 .

Specifically, the angle adjusting device 220 is used to adjust the inclination angle of the conveying steel belt 213, and it includes a base, a supporting beam 221 and two driving cylinders. Wherein, the two ends of the supporting beam 221 are respectively connected to the driving roller 212 and the driven roller 211, the upper ends of the two driving cylinders are respectively connected to the two ends close to the supporting beam 221, and the lower ends of the two driving cylinders are connected to the base. The driving cylinder can be a hydraulic cylinder, and the distance between the steel strip 213 surface and the water-cooled crystallization roller 310 at the matching point can be adjusted through the cooperation of the two driving cylinders, and the thickness of the casting strip can be adjusted.

The roll lifting assembly 430 is used to drive the hot roll 410 to move to adjust the rolling gap. The roll lifting assembly 430 can adopt the existing structure, as long as the driving and adjustment of the hot roll 410 can be realized. Here, the roll lifting assembly 430 includes a lifting oil cylinder, which is connected to the hot rolling roll 410 by the lifting oil cylinder, and drives the hot rolling roll 410 to move up and down. The distance between the hot roll 410 and the surface of the conveying steel strip 213 can flexibly adjust the size of the rolling gap, that is, adjust the rolling thickness, on the premise that the angle adjusting device 220 adjusts the angle of the conveying steel strip 213 .

The examples described in the present invention are only to describe the preferred implementation of the present invention, and are not intended to limit the concept and scope of the present invention. Variations and improvements should fall within the protection scope of the present invention.

Claims (10)

1. a kind of roller belt-type thin-belt casting rolling all-in-one machine, including tundish (100), lace conveying device (200), caster body (300) and tandem rolling mechanism (400), it is characterised in that：The lace conveying device (200) includes the transmission steel band being obliquely installed (213)；The tundish (100), caster body (300) and tandem rolling mechanism (400) may be contained within above transmission steel band (213), And it is set gradually from high to low along the conveying direction of transmission steel band (213)；The caster body (300) includes water cooling crystallization roll (310), it is the point that coincide between water cooling crystallization roll (310) and transmission steel band (213) surface；The tandem rolling mechanism (400) includes heat Roll (410) forms rolling gap between hot roll (410) and transmission steel band (213) surface.

2. a kind of roller belt-type thin-belt casting rolling all-in-one machine according to claim 1, it is characterised in that：The transmission steel band (213) top is provided with a pair of of side seal board (230) along the both sides of direction of transfer.

3. a kind of roller belt-type thin-belt casting rolling all-in-one machine according to claim 1, it is characterised in that：The tundish (100) Bottom be equipped with invasive nozzle (110), the lower end of invasive nozzle (110) is passed to close to transmission steel band (213) surface.

4. a kind of roller belt-type thin-belt casting rolling all-in-one machine according to claim 1, it is characterised in that：The transmission steel band (213) both ends are respectively fitted on drive roll (212) and driven voller (211), in drive roll (212) and driven voller (211) Home roll cooling water pipe (215) is respectively equipped at the heart in an axial direction and from roller cooling water pipe (214).

5. a kind of roller belt-type thin-belt casting rolling all-in-one machine according to claim 4, it is characterised in that：The lace conveying device (200) further include for carrying out cooling water cooling plant (240) to transmission steel band (213)；The water cooling plant (240) includes edge The multiple steel band water cooling tubes being disposed about on the inside of transmission steel band (213).

6. a kind of roller belt-type thin-belt casting rolling all-in-one machine according to claim 4, it is characterised in that：The lace conveying device (200) further include for adjusting the angle regulator (220) for transmitting steel band (213) angle of inclination；The angle regulator (220) include supporting beam (221) and two driving cylinders, the both ends of supporting beam (221) are separately connected drive roll (212) and driven voller (211), two driving cylinders are separately connected close to the both ends of supporting beam (221).

7. a kind of roller belt-type thin-belt casting rolling all-in-one machine according to claim 1, it is characterised in that：The caster body (300) further include for drive water cooling crystallization roll (310) rotate continuous casting drive component (320), continuous casting drive component (320) packet Include the continuous casting driving roll with water cooling crystallization roll (310) driving contact.

8. a kind of roller belt-type thin-belt casting rolling all-in-one machine according to claim 7, it is characterised in that：The water cooling crystallization roll (310) include roller core (312) and be sleeved on the collars (311) of roller core (312) outside；It is set in an axial direction at the center of the roller core (312) There is roller cooling water pipe (313).

9. a kind of roller belt-type thin-belt casting rolling all-in-one machine according to claim 1, it is characterised in that：The tandem rolling mechanism (400) further include hot rolling drive component (420) for driving hot roll (410) to rotate, and for driving hot roll (410) Movement is to adjust the roll lifting assembly (430) in rolling gap.

10. a kind of application method of roller belt-type thin-belt casting rolling all-in-one machine, step are：First, the molten steel stream in tundish (100) Onto transmission steel band (213), flow into the molten bath between transmission steel band (213) and water cooling crystallization roll (310)；Then, with transmission The solidification of molten steel of steel band (213) and water cooling crystallization roll (310) contact, close to transmission steel band (213) and water cooling crystallization roll (310) Surface forms two solidified shells, and two solidified shells are being kissed with the counter motion of transmission steel band (213) and water cooling crystallization roll (310) It is pressed at chalaza, forms certain thickness Cast Strip after pressing；Then, Cast Strip with transmission steel band (213) enter hot roll (410) the rolling gap between transmission steel band (213) is rolled；Finally, with the rotation of hot roll (410), after hot rolling The Cast Strip for forming required thickness is spread out of from hot roll (410) bottom, obtains strip.