CN213195601U

CN213195601U - Novel ladle for cast tube

Info

Publication number: CN213195601U
Application number: CN202021628522.3U
Authority: CN
Inventors: 杨万华; 黄新高; 王海玲; 张俊文; 胡卫征; 杨小红; 孙广伟; 陈泉
Original assignee: Anyang Steel Yongtong Ductile Iron Pipe Co Ltd
Current assignee: Anyang Steel Yongtong Ductile Iron Pipe Co Ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2021-05-14
Anticipated expiration: 2030-08-07

Abstract

The utility model discloses a novel ladle for cast tubes, which comprises a bucket mould and a cover plate, wherein the bucket mould is designed as a V-shaped bucket, and the cover plate is horizontally fixed at a V-shaped opening above the bucket mould; a coating material layer, a refractory brick layer and a refractory coating layer are sequentially paved on the inner wall of the bucket mold; a discharge port is formed in the top of the inclined side face of the hopper mould, and a paint layer, a refractory brick layer and a refractory coating layer are sequentially paved on the inner wall of the discharge port from inside to outside; a cushion block is fixedly arranged on the outer wall below the discharge port, and a rotating port is arranged on the cushion block; and the bottom of the bucket mold and the outer wall of the inclined side face at the same side with the cushion block are fixedly provided with mounting frames. The utility model aims at providing a stable in structure, the inner wall is difficult for the scaling loss to drop, the novel ladle for cast tube of easy repair.

Description

Novel ladle for cast tube

Technical Field

The utility model belongs to metallurgical forging field, concretely relates to novel ladle for cast tube.

Background

The ductile cast iron pipe has the characteristics of iron essence and steel performance, high strength, good plasticity, light weight, good ductility and linearity, smooth surface, accurate size, uniform wall thickness, simple installation, good sealing effect, high cost performance and the like, and is widely applied to the fields of water conservancy, mines, metallurgy, petroleum, power generation, urban public construction and the like.

The manufacturing principle of the centrifugal nodular cast iron pipe is as follows: and (3) casting molten iron above No. 18, passing the spheroidized molten iron through a ladle for storing the molten iron, pouring the molten iron into a high-speed rotating mold at a constant speed, and quickly cooling and casting to form a cast tube. The whole casting process is flow line operation, the production rhythm is fast, the molten iron is required to be supplied in time, the unit tapping amount of the ladle is uniform, the wall thickness of the cast pipe can be ensured to be consistent, and the casting defects are few.

The common ladle building method is that a refractory pouring material and water are mixed according to a certain proportion and then are integrally poured into a ladle iron mold, and the ladle iron mold is dried for use. The iron mold is built by adopting pouring materials, the iron mold needs to be repaired by using new pouring materials after local burning loss, but the pouring materials which are fired at high temperature are not easy to be bonded with the new pouring materials and are easy to fall into blocks integrally, and the flushed pouring materials directly flow into the tube body of the cast tube, so that the defect of slag inclusion is caused; in addition, the castable in the ladle is easy to repair uneven, the volume of the ladle on the inner wall is influenced, the tapping quantity is not uniform, the tapping flow is unstable, and the wall thickness uniformity of the pipe body of the cast pipe is directly influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model aims to provide a stable structure, the inner wall is not easy to be burnt and lost and drops, and the novel ladle for casting pipe is easy to repair.

In order to realize the purpose, the utility model discloses a technical scheme be:

a novel ladle for cast tubes comprises a bucket mold and a cover plate, wherein the bucket mold is designed as a V-shaped bucket, and the cover plate is horizontally fixed at a V-shaped opening above the bucket mold; a coating material layer, a refractory brick layer and a refractory coating layer are sequentially paved on the inner wall of the bucket mold; a discharge port is formed in the top of the inclined side face of the hopper mould, and a paint layer, a refractory brick layer and a refractory coating layer are sequentially paved on the inner wall of the discharge port from inside to outside; a cushion block is fixedly arranged on the outer wall below the discharge port, and a rotating port is arranged on the cushion block; and the bottom of the bucket mold and the outer wall of the inclined side face at the same side with the cushion block are fixedly provided with mounting frames.

Preferably, the oblique side surface of the hopper mould is designed in an arc shape.

Preferably, the refractory brick layer is paved by refractory brick materials with the types of 230mm length, 115mm width and 65mm height.

Preferably, the thickness of the coating layer is 5mm, the material is less than or equal to 1.0 percent of water, the fixed temperature is 70-80 ℃, and the volume density is more than or equal to 2.0g/cm³The volume change rate is less than or equal to 1.0 percent, and the compressive strength is more than or equal to 40 MPa.

Preferably, the thickness of the fireproof coating layer is 3mm, and the fireproof coating layer is made of 20-25% of SiO2, 2-6% of Al2O3, 2% of Ca, 40% of C and 1450 ℃ of refractoriness.

Preferably, a first refractory brick is laid at the tip end of the bottom of the inner wall of the bucket mold, and the first refractory brick is an integrally formed arc-shaped refractory brick; the lower part of the first refractory brick is laid on the coating material layer, and the upper part is also laid with a refractory coating layer.

Preferably, the top of the inclined side face of the hopper mould is provided with a second refractory brick, the lower part of the second refractory brick is laid on the coating material layer on the side wall of the hopper mould, the discharge port is arranged in the middle of the second refractory brick, and the discharge port is laid with a refractory coating layer.

Preferably, the inclined plane of the second refractory brick with the inverted trapezoid design is provided with a notch matched with the cushion block.

Preferably, the bucket mold is made of an iron material; the cover plate is made of a Q235 steel plate with the thickness of 6-8mm

The utility model discloses the beneficial effect who has does:

1. with prior art in the ladle inner wall pour the material easily drop, difficult repair compare, the utility model discloses a ladle is inside to be laid in proper order and to paint bed of material, firebrick layer and fire-resistant dope layer, through setting up the refractory material that the multilayer bonds each other, can show the stability that increases the ladle structure, can effectively prevent coming off of inner structure.

2. The inner wall of the ladle is paved with a coating layer with the thickness of 5mm, and the coating layer is made of high-strength alkali fire clay to bond bricks of a refractory brick layer, so that the stability of the inner layer structure of the ladle can be obviously improved, and the bricks of the refractory layer can be effectively prevented from falling off.

3. The firebrick layer is laid on scribbling the bed of material, can show the antiscour of reinforcing ladle inner wall, high temperature resistance to laying through the firebrick piece of regulation model, when the local loss of burning appears and falls the piece, the firebrick of regulation model is more convenient to the repair of dropout portion, through agreeing with between the firebrick piece, can prevent to appear mending back unevenness's phenomenon among the prior art, the tapping volume is more even, the tapping iron flow is more stable, the repair work of the part that drops has made things convenient for has been increaseed.

4. The refractory coating layer with the thickness of 3mm is laid on the surface of the refractory brick layer, so that the refractory brick layer is bonded, the smoothness of the surface of the refractory brick layer is improved, the anti-scouring and high-temperature resistance of the inner wall of the ladle can be obviously improved, the durability of the ladle is effectively improved, and the service life of the ladle is effectively prolonged.

5. The utility model discloses concentrate at the heat, erode the most advanced bottom that the frequency is high and adopt first resistant firebrick, the convex design of first resistant firebrick can effectively avoid it to be washed away and fall the piece, prevents that the residue from directly flowing into the cast tube pipe shaft, causes and presss from both sides the sediment defect, and first resistant firebrick adopts the integrated into one piece design simultaneously, appears impaired after using for a long time when, has greatly made things convenient for the change to the fragment of brick of point department, can also avoid repairing easy unevenness's phenomenon simultaneously.

6. The discharge port is arranged in the middle of the second refractory brick, and a refractory coating layer is laid at the discharge port of the second refractory brick; the second is able to bear or endure firebrick piece design of integrated into one piece, when permanent erode, be heated and use and appear impaired, has greatly made things convenient for the change to the discharge gate fragment of brick.

Drawings

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

FIG. 2 is a structural view of a second refractory brick.

Detailed Description

The novel ladle for cast tubes as shown in fig. 1-2 comprises a bucket mold 1 and a cover plate 7, wherein the bucket mold 1 is designed as a V-shaped bucket, and the cover plate 7 is horizontally fixed at a V-shaped opening above the bucket mold 1; wherein the bucket mould 1 is made of iron material; the cover plate 7 is made of a Q235 steel plate with the thickness of 6-8 mm. The oblique side surface of the bucket mould 1 is designed in an arc shape, so that the inner wall can be slowed down from being washed by molten iron.

The inner wall of the bucket mould 1 is paved with a 5mm thick coating material layer 2, the material adopts the water content of less than or equal to 1.0 percent, the fixed temperature is 70-80 ℃, and the volume density is more than or equal to 2.0g/cm³In addition, the alkali fire clay is used for bonding bricks of the refractory brick layer 3, so that the stability of the inner layer structure of the ladle can be obviously improved, and the falling of the refractory brick layer can be effectively prevented.

Refractory brick layer 3 is laid on smearing bed of material 2, refractory brick layer 3 on the 1 inner wall of fill mould adopts the model to be length 230mm, width 115mm, high 65 mm's refractory brick material is laid, can show the antiscour of reinforcing ladle inner wall, high temperature resistant ability, and lay through the firebrick piece of regulation model, when the local burning loss falls the piece, the firebrick of regulation model is more convenient to the repair of shedder, agree with through between the firebrick piece, can prevent to appear repairing back unevenness's phenomenon among the prior art, the volume of tapping is more even, the tapping iron flows more stably, the repair work of the position that has increaseed and has made things convenient for droing.

The surface of the refractory brick layer 3 is paved with a refractory coating layer 4 with the thickness of 3mm, and the material is a refractory coating with the content of SiO2 of 20-25%, the content of Al2O3 of 2-6%, the content of Ca of <2%, the content of C of >40% and the refractoriness of >1450 ℃; the refractory brick layer 3 is bonded, the smoothness of the surface of the refractory brick layer 3 is improved, the anti-scouring and high-temperature resistance of the inner wall of the ladle can be obviously improved, the durability of the ladle is effectively improved, and the service life of the ladle is effectively prolonged.

Particularly, the refractory bricks at the bottom tip of the inner wall of the bucket mould 1 are paved by adopting integrally formed arc-shaped first refractory bricks 31, the lower parts of the first refractory bricks 31 are paved on the daubing material layer 2, and the upper parts of the first refractory bricks are also paved with a refractory coating layer 4. Concentrate at the heat, erode the most advanced bottom that the frequency is high, adopt convex resistant firebrick material, can effectively avoid it to be washed away and fall the piece, prevent that the residue from directly flowing into the cast tube pipe shaft, cause and press from both sides the sediment defect, adopt integrated into one piece's fragment of brick design simultaneously, appear impaired the time after using for a long time, greatly made things convenient for the change to the fragment of brick of most advanced department, can also avoided repairing easy unevenness's phenomenon simultaneously.

Particularly, the top of the oblique side surface of the hopper mould 1 is provided with a second refractory brick 32, the second refractory brick 32 is in an integrally formed inverted trapezoid design, the lower part of the second refractory brick 32 is laid on the coating material layer 2 on the side wall of the hopper mould 1, a discharge hole 321 is arranged in the middle of the second refractory brick 32, and a refractory coating layer 4 is laid on the discharge hole 321 of the second refractory brick 32; the refractory bricks at the discharge port 321 are designed into integrally formed bricks, so that the bricks at the discharge port 321 can be greatly replaced when being damaged in long-term washing and heating.

A cushion block 6 is fixedly arranged on the outer wall below the discharge port 321, a rotating port 61 is arranged on the cushion block 6, and a notch 322 matched with the cushion block 6 is arranged on the inclined plane of the inverted trapezoidal second refractory brick 32; when the ladle is discharged, the rotating opening 61 can be rotationally clamped on the rotating shaft, and the ladle is rotated clockwise to discharge by taking the rotating shaft as the center, so that the ladle is more convenient and labor-saving to discharge; simultaneously cushion 6 can carry out effectual support to discharge gate 321, increases the stability of ejection of compact. The mounting frame 5 is fixedly arranged on the outer wall of the oblique side face at the same side with the cushion block 6 at the bottom of the bucket mold 1, so that the ladle can be conveniently moved, hoisted and discharged.

Claims

1. The utility model provides a novel ladle for cast tube, includes the fill mould and the apron of V type fill design, its characterized in that: the cover plate is horizontally fixed at the V-shaped opening above the hopper mould; a coating material layer, a refractory brick layer and a refractory coating layer are sequentially paved on the inner wall of the bucket mold; a discharge port is formed in the top of the inclined side face of the hopper mould, and a paint layer, a refractory brick layer and a refractory coating layer are sequentially paved on the inner wall of the discharge port from inside to outside; a cushion block is fixedly arranged on the outer wall below the discharge port, and a rotating port is arranged on the cushion block; and the bottom of the bucket mold and the outer wall of the inclined side face at the same side with the cushion block are fixedly provided with mounting frames.

2. The ladle for casting pipe according to claim 1, wherein: the oblique side surface of the hopper mould is designed in an arc shape.

3. The ladle for casting pipe according to claim 1, wherein: the refractory brick layer is paved by refractory brick materials with the types of 230mm length, 115mm width and 65mm height.

4. The ladle for casting pipe according to claim 3, wherein: the thickness of the coating layer is 5mm, and the coating layer is made of high-strength alkali fire clay.

5. The ladle for casting pipe according to claim 4, wherein: the thickness of the fireproof coating layer is 3mm, and the fireproof coating layer is made of fireproof coating.

6. The ladle for casting pipe according to claim 3, wherein: a first refractory brick is laid at the top end of the bottom of the inner wall of the hopper mould, and the first refractory brick is an integrally formed arc-shaped refractory brick; the lower part of the first refractory brick is laid on the coating material layer, and the upper part is also laid with a refractory coating layer.

7. The ladle for casting pipe according to claim 3, wherein: the top of the oblique side face of the hopper mould is provided with a second refractory brick, the lower part of the second refractory brick is laid on a coating material layer on the side wall of the hopper mould, a discharge port is arranged in the middle of the second refractory brick, and a refractory coating layer is laid on the discharge port.

8. The ladle for casting pipe according to claim 5, wherein: and a notch matched with the cushion block is formed on the inclined plane of the inverted trapezoidal second refractory brick.

9. The ladle for casting pipe according to claim 1, wherein: the hopper mould is made of iron materials; the cover plate is made of a Q235 steel plate with the thickness of 6-8 mm.