CN217315778U

CN217315778U - Horizontal continuous casting secondary traction device

Info

Publication number: CN217315778U
Application number: CN202123391926.2U
Authority: CN
Inventors: 朱学峰; 朱张泉; 姜少军; 丁家园; 李密; 钱佳鸣; 蒋柯明
Original assignee: Zhejiang Keyu Metal Materials Co ltd; Zhejiang Hailiang Co Ltd
Current assignee: Zhejiang Keyu Metal Materials Co ltd; Zhejiang Hailiang Co Ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-08-30
Anticipated expiration: 2031-12-29

Abstract

The utility model relates to a horizontal continuous casting secondary draw gear, including the heat preservation stove, set up the interface channel on the heat preservation stove to and set up the crystallizer outside the heat preservation stove with the interface channel intercommunication, the interface channel periphery is equipped with induction coil, last coil circular telegram and the inlet tube of being equipped with of induction coil. The utility model discloses different with traditional horizontal continuous casting production method, this production method can effectively guarantee in the production process that the crystallizer of new change reaches reasonable copper liquid temperature in using, and avoids mold change back heat preservation stove interior sediment to flow in the graphite mould of new change, and then the continuous casting ingot casting surface and the internal defect that cause take place.

Description

Horizontal continuous casting secondary traction device

Technical Field

The utility model relates to a horizontal continuous casting secondary draw gear.

Background

At present, two modes, namely a production mode with a base and a production mode without the base, are adopted in the production process of the horizontal continuous casting large ingot, and the two modes have the following characteristics:

the production mode with the base is as follows: the mold is convenient to change, the plug rod is used for plugging the releasing hole, and the mold can be directly changed. However, the base hole is usually designed to be smaller than phi 50mm, so that the problems that the heat exchange between the copper water in the base and the copper water in the heat preservation furnace is insufficient in normal production, the surface of an ingot is easy to crack, the ingot is not dragged and the like are caused.

The production mode without a base is as follows: the graphite mold is connected with the heat preservation furnace through a channel with the diameter of more than 100mm, so that the crystallizer and the copper liquid in the heat preservation furnace can exchange heat fully in the casting process, and the problems of cracking and dragging of the surface of the cast ingot are greatly reduced. However, when the crystallizer is replaced, the copper liquid in the heat preservation furnace needs to be emptied, and at the moment, slag in the heat preservation furnace is deposited at the bottom of the furnace, so that the slag flows into the graphite mold when a newly replaced crystallizer is produced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to achieve the purpose of providing a horizontal continuous casting secondary traction device, when the new crystallizer is replaced, the slag is prevented from flowing into the graphite mould.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a horizontal continuous casting secondary traction device comprises a heat preservation furnace, a connecting channel arranged on the heat preservation furnace, and a crystallizer arranged outside the heat preservation furnace and communicated with the connecting channel, wherein an induction coil is arranged on the periphery of the connecting channel, and a coil power-on and water inlet pipe are arranged on the induction coil.

Preferably, the coil electrifying and water inlet pipes are arranged along the circumferential direction of the induction coil.

Preferably, a bulk refractory material is filled between the connecting channel and the induction coil.

Preferably, the axial section of the connecting channel is a T-shaped surface, one end of the connecting channel close to the holding furnace is a small-diameter end, and one end of the connecting channel far away from the holding furnace is a large-diameter end.

Preferably, the inlet end face of the crystallizer is inserted into the large-diameter end of the connecting channel.

Preferably, the crystallizer is fixed on the outer side wall of the holding furnace through bolts.

Preferably, the connecting channel has a diameter D, 100mm < D < 500 mm.

Preferably, the water outlet temperature is T after the coil is electrified and the water inlet pipe is electrified, and T is more than or equal to 80 ℃ and less than or equal to 90 ℃.

After the technical scheme is adopted, the utility model has the advantages of as follows: the crystallizer and the copper liquid heat exchange in the holding furnace are sufficient in the casting process, the surface cracking of the cast ingot is reduced, and the product quality of the cast ingot is improved.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

FIG. 1 is a schematic view of the present invention;

fig. 2 is a schematic diagram of the local amplification of the installation position of the middle coil in the present invention.

Reference numerals:

1. a holding furnace; 2. a connecting channel; 3. a crystallizer; 4. an induction coil; 5. the coil is electrified and the water inlet pipe is connected; 6. a bulk refractory material; 7. and (4) bolts.

Detailed Description

In order to explain the overall concept of the present invention more clearly, the present invention will be further explained with reference to the accompanying drawings and specific embodiments. It is to be understood that the following terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like are used in an orientation or positional relationship relative to one another only as illustrated in the accompanying drawings and are used merely for convenience in describing and simplifying the invention, and do not indicate or imply that the device/component so referred to must have a particular orientation or be constructed and operated in a particular orientation and therefore should not be considered as limiting the invention.

The utility model provides a horizontal continuous casting secondary draw gear, as shown in fig. 1 and fig. 2, includes heat preservation stove 1, sets up interface channel 2 on heat preservation stove 1 to and set up the crystallizer 3 with interface channel 2 intercommunication outside heat preservation stove 1, interface channel 2 periphery is equipped with induction coil 4, be equipped with coil circular telegram and inlet tube 5 on induction coil 4. The utility model discloses copper liquid heat exchange is abundant in crystallizer and the holding furnace in the casting process, reduces ingot casting surface cracking, improves foundry goods product quality, and is different with traditional horizontal continuous casting production method, can effectively guarantee to reach reasonable copper liquid temperature in the crystallizer 3 of new change uses in the production process, and effectively avoids 1 interior cinder of holding furnace in the retooling back to flow into the graphite mould of new change in, and then the continuous casting ingot casting surface and the internal defect that cause take place.

In order to reduce the heat of the copper liquid taken away by the induction coil 4 as much as possible, a plurality of coil energization and water inlet pipes 5 are arranged along the circumference of the induction coil 4, and a small amount of water is contained in the energized and water inlet pipes, so that the water outlet temperature is T after the coil energization and the water inlet pipes 5 are energized, T is more than or equal to 80 ℃ and less than or equal to 90 ℃, the water outlet temperature of the coil is ensured to be 85 +/-5 ℃, and the heat of the copper liquid taken away by the coil is reduced as much as possible.

In order to further improve the high temperature resistance, a bulk refractory material 6 is filled between the connecting channel 2 and the induction coil 4. On one hand, the heat insulation effect is achieved, and on the other hand, the fireproof and high-temperature-resistant performance is achieved, and the safety is improved.

In order to improve the connection stability, the axial section of the connecting channel 2 is a T-shaped surface, one end of the connecting channel 2 close to the holding furnace 1 is a small-diameter end, and one end of the connecting channel 2 far away from the holding furnace 1 is a large-diameter end. The inlet end face of the crystallizer 3 is inserted into the large-diameter end of the connecting channel 2. The crystallizer 3 is connected with the connecting channel 2 quickly and conveniently, and the replacement and the safety of the crystallizer 3 are also facilitated.

In order to improve the stability of the mold 3, the mold 3 is fixed on the outer side wall of the holding furnace 1 through bolts 7. The number of the bolts 7 can be set to be a plurality of, so that the connection stability of the crystallizer 3 is improved, the crystallizer is not easy to shake in the traction process, and the stability of traction work is improved.

In order to avoid that the slag in the holding furnace 1 flows into a newly replaced graphite mold after mold replacement, the diameter of the connecting channel 2 is D, and D is more than 100mm and less than 500 mm. The production method is suitable for producing the brass continuous casting bar with the horizontal continuous casting specification larger than phi 100mm, in particular to producing the brass continuous casting bar with the phi 260mm, and different from the traditional horizontal continuous casting production method, the production method can effectively ensure that the newly replaced crystallizer 3 reaches reasonable copper liquid temperature in use in the production process, and prevents slag in the holding furnace 1 from flowing into the newly replaced graphite mold after mold replacement, thereby avoiding the occurrence of surface and internal defects of a continuous casting ingot.

In normal use: a small amount of water is filled in the induction coil 4 to ensure that the water outlet temperature of the induction coil 4 is 85 +/-5 ℃ so as to reduce the heat of the copper liquid taken away by the coil as much as possible.

When the crystallizer 3 is replaced: the liquid level in the holding furnace 1 is drawn to the upper edge of the channel opening of the holding furnace 1 by 50mm, then the drawing is stopped, the water of the induction coil 4 is adjusted to be large (the temperature difference of the inlet water and the outlet water is controlled within 5 ℃), and after the copper liquid in the channel forms a firm solidified shell, the old crystallizer 3 is detached and replaced by a new crystallizer 3. And then after the traction work is ready, the smelting furnace transfers copper water to the holding furnace 1, the induction coil 4 is powered (the effluent temperature is controlled to be 85 +/-5 ℃) until copper is condensed and melted in the channel, and traction is carried out after the temperature reaches the traction temperature.

In addition to the preferred embodiments described above, other embodiments of the present invention are also possible, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope of the present invention defined by the appended claims.

Claims

1. The utility model provides a horizontal continuous casting secondary draw gear which characterized in that: the device comprises a heat preservation furnace, a connecting channel arranged on the heat preservation furnace, and a crystallizer arranged outside the heat preservation furnace and communicated with the connecting channel, wherein an induction coil is arranged on the periphery of the connecting channel, and a coil power-on and water inlet pipe are arranged on the induction coil.

2. The horizontal continuous casting secondary traction device according to claim 1, characterized in that: the coil is electrified and the water inlet pipe is arranged along the circumferential direction of the induction coil.

3. The horizontal continuous casting secondary traction device according to claim 2, characterized in that: bulk refractory materials are filled between the connecting channel and the induction coil.

4. The horizontal continuous casting secondary traction device according to claim 3, characterized in that: the axial cross section of the connecting channel is a T-shaped surface, one end of the connecting channel, which is close to the heat preservation furnace, is a small-diameter end, and one end of the connecting channel, which is far away from the heat preservation furnace, is a large-diameter end.

5. The horizontal continuous casting secondary traction device according to claim 4, characterized in that: and the inlet end face of the crystallizer is inserted into the large-diameter end of the connecting channel.

6. The horizontal continuous casting secondary traction device according to claim 5, characterized in that: the crystallizer is fixed on the outer side wall of the heat-preserving furnace through bolts.

7. The horizontal continuous casting secondary traction apparatus according to any one of claims 1 to 6, wherein: the diameter of the connecting channel is D, and D is more than 100mm and less than 500 mm.

8. The horizontal continuous casting secondary draft gear according to claim 7, wherein: the water outlet temperature is T after the coil is electrified and the water inlet pipe is electrified, and T is more than or equal to 80 ℃ and less than or equal to 90 ℃.