CN214442893U

CN214442893U - Ingot mould for producing low segregation steel ingot

Info

Publication number: CN214442893U
Application number: CN202023347351.XU
Authority: CN
Inventors: 杜光远
Original assignee: Jiangsu Zhuhong Forging Co ltd
Current assignee: Jiangsu Zhuhong Forging Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-10-22
Anticipated expiration: 2030-12-31

Abstract

The application relates to the field of steel ingot casting molding, in particular to a steel ingot mold for producing low segregation steel ingots, which comprises a steel ingot mold body and a chassis, wherein the steel ingot mold body is arranged on the chassis, a detachable riser iron shell is arranged at the top of the steel ingot mold body, the horizontal section of the inner cavity of the steel ingot mold body is rectangular, and at least two lifting holes are uniformly arranged on the chassis at intervals. The method optimizes the temperature field distribution when the steel ingot is solidified, further reduces the segregation degree of the steel ingot, and is not easy to coil slag; when the temperature is low in winter, the residual temperature of the steel ingot mould body is utilized to preserve heat of the riser iron shell, so that the temperature of the riser iron shell is not too low, the steel ingot molding quality is improved, and the effects of energy conservation and emission reduction are achieved.

Description

Ingot mould for producing low segregation steel ingot

Technical Field

The application relates to the field of steel ingot casting molding, in particular to an ingot mold for producing low segregation steel ingots.

Background

The ingot mold of the related art is a single-hole type bottom plate, and the structure of the single-hole type bottom plate ingot mold is shown in fig. 1. The steel ingot mould body 1 provided with the lifting lug is arranged on the chassis 2, a single hole is arranged in the center of the concave pit of the chassis 2, and the chassis 2 is pressed by the dead weight of the steel ingot mould body 1 to form a closed barrel-shaped container. During casting, molten steel enters the ingot mould through a hole in the center of the chassis 2 to form a lower casting steel ingot.

The problems of the related art described above are: the single-hole type chassis ingot mould has the advantages that during the pouring process, the molten steel rises unstably, slag is easy to curl, and the quality of the steel ingot is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that the steel ingot quality is influenced by unstable rising of the molten steel and easy slag rolling in the pouring process of the single-hole type chassis steel ingot mould, the application provides the steel ingot mould for producing the low segregation steel ingot.

The application provides an ingot mould for producing low segregation steel ingots, which adopts the following technical scheme:

the steel ingot mould for producing low segregation steel ingot includes steel ingot mould body and base plate, the steel ingot mould body is placed on the base plate, the top portion of the described steel ingot mould body is equipped with removable riser iron shell, the horizontal cross-section of internal cavity of the steel ingot mould body is rectangular, and on the base plate at least two lifting holes are uniformly set.

Through adopting above-mentioned technical scheme, the ingot mould adopts split type design, divide into: a chassis with multiple lift holes; a steel ingot mould body with a rectangular inner cavity; a riser iron shell with low specific heat capacity. The split type design optimizes the temperature field distribution when the steel ingot is solidified, so that the segregation degree of the steel ingot is reduced, and slag rolling is not easy.

Optionally, the horizontal section of the inner wall of the riser iron shell is rectangular.

By adopting the technical scheme, the steel ingot mould body is a rectangular inner cavity, so that the diffusion degree of molten steel is small when the molten steel enters the inner cavity of the riser iron shell from the rectangular inner cavity of the steel ingot mould body, the temperature field distribution of the steel ingot during solidification is further optimized, and the steel ingot segregation degree is further reduced.

Optionally, the feeder head iron shell is in a reduced bottleneck shape relative to the top of the ingot mould body.

By adopting the technical scheme, the reduction of the bottle mouth type riser iron shell is beneficial to reducing slag entrapment.

Optionally, a groove is formed in the top of the steel ingot mold body, the riser iron shell comprises a bottom plate, the bottom plate is arranged at the bottom of the groove, a clamping block is arranged at the edge of the bottom plate, a clamping groove is formed in the inner wall of the groove and communicated with the top surface of the steel ingot mold body, and the clamping block is inserted into the clamping groove.

By adopting the technical scheme, after the clamping block is inserted into the clamping groove, the riser iron shell can be prevented from rotating, on one hand, molten steel is prevented from making the riser iron shell float and then rotate, and on the other hand, a worker is prevented from mistakenly operating the lifting appliance to lift the riser iron shell to rotate when the molten steel is poured.

Optionally, the groove is a circular groove, the side surface of the bottom plate of the riser iron shell is arc-shaped, and the circle center of the bottom plate positioned in the groove can coincide with the circle center of the groove; when the clamping block is inserted into the clamping groove, a gap is formed between the side surface of the clamping block and the inner side wall of the clamping groove.

By adopting the technical scheme, the lifting appliance is operated during demoulding to enable the feeder head iron shell to rotate within a small angle within a range allowed by the clearance, so that the feeder head iron shell is initially separated from the steel ingot, and then the lifting appliance upwards lifts the feeder head iron shell, so that the feeder head iron shell can be separated from the steel ingot and a steel ingot mould body.

Optionally, two notches are formed in the inner side wall of the groove, the notches are communicated with two opposite side surfaces and the top surface of the steel ingot mold body, and a bottom plate of the riser iron shell extends out of the groove through the notches.

By adopting the technical scheme, after the steel ingot is taken out of the steel ingot mould body, the feeder head iron shell is arranged in the groove, and two ends of the feeder head iron shell extend out of the notch, so that on one hand, the feeder head iron shell can be insulated by means of the residual heat of the steel ingot mould body, the temperature of the feeder head iron shell is not too low in winter, and on the other hand, lining materials can be conveniently pasted on the inner wall of the feeder head iron shell and the top of the inner cavity of the steel ingot mould body.

Optionally, the feeder head iron shell is welded with a weighting metal block.

By adopting the technical scheme, the riser iron shell is heavy enough, and the buoyancy of the molten steel can be overcome by the weight of the riser iron shell.

Optionally, the inner cavity of the steel ingot mold body is thick in the middle, thin at the top end and thin at the bottom end, and the inner cavity of the steel ingot mold body is gradually thinned from the middle to the upper end and the lower end.

By adopting the technical scheme, the temperature field distribution of the solidified steel ingot can be optimized, and the segregation degree of the steel ingot is further reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the temperature field distribution of the steel ingot during solidification is optimized, so that the segregation degree of the steel ingot is reduced, and slag rolling is not easy to occur;

2. when the temperature is low in winter, the residual temperature of the steel ingot mould body is utilized to preserve heat of the riser iron shell, so that the temperature of the riser iron shell is not too low, the steel ingot molding quality is improved, and the effects of energy conservation and emission reduction are achieved.

Drawings

FIG. 1 is a schematic view of a single hole type base plate ingot mold according to the background art of the present application;

FIG. 2 is a schematic view of the structure of an ingot mold for producing a low-segregation steel ingot in the example of the present application.

Description of reference numerals: 1. a steel ingot mould body; 2. a chassis; 3. a riser iron shell; 4. a weighted metal block; 5. a groove; 6. a base plate; 7. a clamping block; 8. a card slot; 9. a gap; 10. and (4) a notch.

Detailed Description

The present application is described in further detail below with reference to fig. 2.

The embodiment of the application discloses an ingot mould for producing low segregation steel ingots. Referring to fig. 2, the ingot mold adopts a split design and is divided into: a chassis 2, a steel ingot mould body 1 and a riser iron shell 3. The steel ingot mould body 1 is arranged on a base plate 2, concave pits are formed in the position, covered by the steel ingot mould body 1, of the upper surface of the base plate 2, and at least two ascending holes are uniformly formed in the center of each concave pit at intervals. The chassis 2 is in a square shape, the size is 1950mm multiplied by 2500mm multiplied by 320mm, 2 lifting holes with the diameter of 126mm to 136mm are distributed at the interval of 550mm to 650mm along the axial lead of the width direction of 2500mm, or 3 lifting holes with the diameter of 126mm to 136mm are distributed at the interval of 425mm to 475 mm.

Referring to fig. 2, the horizontal section of the inner cavity of the steel ingot mold body 1 is rectangular, and the middle of the inner cavity of the steel ingot mold body 1 is thick, and the upper and lower ends of the inner cavity of the steel ingot mold body 1 are thin, and gradually become thinner from the middle of the inner cavity of the steel ingot mold body 1 to the upper and lower ends. The size of the outer wall of the top end of the steel ingot mould body 1 is as follows: 2400mm × 1860 mm; the size of the outer wall of the bottom end of the steel ingot mold body 1 is as follows: 2340mm is multiplied by 1560 mm; the size of the inner wall of the top end of the steel ingot mould body 1 is as follows: 1820mm × 1260 mm; the size of the inner wall of the bottom end of the steel ingot mould body 1 is as follows: 1780mm by 1010 mm. The taper of the inner wall of the steel ingot mould body 1 is 4.93-0.53%.

Referring to fig. 2, the aperture of the feeder iron shell 3 is smaller than the aperture of the top of the ingot mold 1, and the feeder iron shell 3 has a reduced bottleneck shape with respect to the top of the ingot mold 1. The size of the inner cavity of the riser iron shell 3 is 1380mm multiplied by 1120mm multiplied by 600mm, and the volume ratio of the riser iron shell 3 is designed to be 12.28 percent. The top surface of the steel ingot mould body 1 is provided with a circular groove 5, the inner wall of the groove 5 is provided with two clamping grooves 8 with opposite positions, and the two clamping grooves 8 are communicated with the top surface of the steel ingot mould body 1.

Referring to fig. 2, the horizontal section of the inner cavity of the feeder head iron shell 3 is rectangular, and the steel ingot mold body 1 is also rectangular, so that the diffusion degree of molten steel entering the inner cavity of the feeder head iron shell 3 from the rectangular inner cavity of the steel ingot mold body 1 is small, the temperature field distribution during steel ingot solidification is further optimized, and the steel ingot segregation degree is further reduced.

Referring to fig. 2, the bottom plate 6 of the bottom of the riser iron shell 3 has a circular arc-shaped side surface, and the bottom surface of the bottom plate 6 is in parallel contact with the bottom of the groove 5 when molten steel is poured. Two clamping blocks 7 protrude from the side surface of the bottom plate 6, each clamping block 7 is used for being inserted into one clamping groove 8, when the two clamping blocks 7 are respectively inserted into the two clamping grooves 8, a gap 9 is formed between the side surface of each clamping block 7 and the inner side wall of each clamping groove 8, and the circle center of the bottom plate 6 can be adjusted to be coincident with the circle center of the groove 5 at the moment.

Referring to fig. 2, two notches 10 are disposed on the inner side wall of the groove 5 at opposite positions, and a connection line of the two notches 10 is perpendicular to a connection line of the two slots 8. The gap 10 is communicated with two opposite side surfaces and the top surface of the steel ingot mould body 1, and the bottom plate 6 of the feeder head iron shell 3 extends out of the groove 5 through the gap 10. When the casting of one time is completed, the steel ingot is taken out of the steel ingot die body 1, the riser iron shell 3 is placed in the groove 5, and two ends of the riser iron shell 3 extend out of the notch 10, so that on one hand, the riser iron shell 3 can be insulated by means of the residual temperature of the steel ingot die body 1, the temperature of the riser iron shell 3 is not too low in winter, and on the other hand, lining materials can be conveniently pasted on the inner wall of the riser iron shell 3 and the top of the inner cavity of the steel ingot die body 1.

Referring to fig. 2, two opposite positions on the outer wall of the riser iron shell 3 are welded with weighted metal blocks 4, and the weighted metal blocks 4 make the riser iron shell 3 heavy enough to overcome the buoyancy of molten steel by the weight of the riser iron shell 3.

The implementation principle of the ingot mould for producing the low segregation steel ingot provided by the embodiment of the application is as follows: during pouring, because the high-temperature molten steel is poured by adopting the multiple-rising-hole injection, the original 1 heat center source is changed into 2 or more than 2 heat center sources, the temperature gradient is greatly reduced during solidification, the selective crystallization and liquation tendency is inhibited, and the local solidification time of a square frame area at the edge of the inner cavity of the steel ingot mold body 1 and the axle center position is shortened, so that the low segregation rate steel ingot with the segregation rate lower than that of the common mold injection steel ingot is obtained. In addition, the die cavity of the steel ingot die body 1 adopts a rectangular inner cavity design with a larger solidification rate and adopts a riser iron shell 3 with low specific heat capacity, which is favorable for further reducing the temperature gradient and reducing the segregation rate of the steel ingot.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a steel ingot mould of production low segregation steel ingot, includes steel ingot mould body (1) and chassis (2), and on chassis (2) were arranged in to steel ingot mould body (1), its characterized in that: the top of the steel ingot mould body (1) is provided with a detachable riser iron shell (3), the horizontal section of the inner cavity of the steel ingot mould body (1) is rectangular, and the chassis (2) is uniformly provided with at least two lifting holes at intervals.

2. The ingot mould for producing a low-segregation ingot according to claim 1, wherein: the horizontal section of the inner wall of the riser iron shell (3) is rectangular.

3. The ingot mould for producing a low-segregation ingot according to claim 1, wherein: the feeder head iron shell (3) is in a reduced bottleneck shape relative to the top of the steel ingot mould body (1).

4. The ingot mould for producing a low-segregation ingot according to claim 1, wherein: the top of steel ingot die body (1) is equipped with recess (5), and rising head iron-clad (3) include bottom plate (6), and the tank bottom of recess (5) is arranged in bottom plate (6), and the edge of bottom plate (6) is equipped with fixture block (7), is equipped with draw-in groove (8) on the inner wall of recess (5), and draw-in groove (8) lead to the top surface of steel ingot die body (1), and draw-in groove (8) supply fixture block (7) to insert.

5. The ingot mould for producing a low-segregation ingot according to claim 4, wherein: the groove (5) is a circular groove, the side surface of the bottom plate (6) of the riser iron shell (3) is arc-shaped, and the circle center of the bottom plate (6) positioned in the groove (5) can be coincided with the circle center of the groove (5); when the clamping block (7) is inserted into the clamping groove (8), a gap (9) is formed between the side surface of the clamping block (7) and the inner side wall of the clamping groove (8).

6. The ingot mould for producing a low-segregation ingot according to claim 4, wherein: two notches (10) are arranged on the inner side wall of the groove (5), the notches (10) are communicated with the two opposite side surfaces and the top surface of the steel ingot die body (1), and a bottom plate (6) of the feeder head iron shell (3) extends out of the groove (5) through the notches (10).

7. The ingot mould for producing a low-segregation ingot according to claim 1, wherein: and a weighting metal block (4) is welded on the riser iron shell (3).

8. The ingot mould for producing a low-segregation ingot according to claim 1, wherein: the middle of the inner cavity of the steel ingot mould body (1) is thick, the top end and the bottom end of the inner cavity of the steel ingot mould body are thin, and the inner cavity of the steel ingot mould body (1) is gradually thinned from the middle to the upper end and the lower end.