CN216297909U - Metal separation sheet pouring basin device - Google Patents

Abstract

The utility model relates to casting pouring equipment, in particular to a metal blocking piece pouring basin device which can effectively block oxidation slag poured initially, enables the oxidation slag to float on the liquid level of a pouring basin before a casting is poured, and can automatically control the liquid outlet flow of a pouring gate under the action of a pouring basin pressure head and metal high temperature so as to avoid slag blocking failure and pouring failure. The utility model has simple structure and convenient use, and effectively avoids the problems of slag stopping failure and pouring failure. The utility model is especially suitable for casting occasions.

Description

Metal separation sheet pouring basin device

Technical Field

The utility model relates to casting pouring equipment, in particular to a metal barrier sheet pouring basin device.

Background

The pouring basin is a device which is used for receiving molten metal from a ladle in the casting process and injecting the molten metal into a sprue channel to enter a casting mold cavity, and the pouring basin has the main functions of blocking oxide residues and air bubbles from molten iron and enabling the oxide residues and the air bubbles to float on the upper part of the pouring basin, and effectively preventing the molten metal from splashing and slowing down the impact of liquid flow on a sand mold.

For medium and large castings, a conventional pouring basin generally does not have a high-efficiency slag blocking function, the temperature of poured pouring basin and metal liquid can be rapidly reduced, a large amount of gas and impurities are generated along with the temperature reduction, and if no blocking measure is provided, the pouring basin and the metal liquid can be drawn into a cavity, so that the serious casting quality problem is caused. Patent No. CN201710383909.3 discloses a semi-permanent double-pouring basin combined structure and a combined use method thereof, wherein pouring liquid contained in a first pouring basin flows into a second pouring basin through a U-shaped channel at a low flow rate, a turbulent flow area is separated from a pouring advection area, and the problem that slag cannot be blocked due to turbulence is solved. Patent No. CN 202110305570.1's patent has announced a runner basin and preparation and application method, the automatic fusing of inlet shutoff piece at the regular time, realize regularly pouring, the sediment of having reduced, avoid defects such as roll up gas and cold shut, however this runner basin can not control out the liquid flow, if it is too big to go out the liquid flow when shutoff piece begins fusing, will cause and keep off the obscure problem of sediment effect because of the vortex, in addition to the design calculation requirement of shutoff piece higher, even because of the iron liquid temperature and the high possibility that causes the pouring failure of not melting of shutoff piece inadequately of runner basin pressure head.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a metal blocking sheet pouring basin device which can effectively block the initially poured molten metal oxidation slag, enables the initially poured molten metal oxidation slag to float on the liquid level of a pouring basin before a casting is poured, and can automatically control the liquid outlet flow of a pouring gate by a metal blocking sheet under the action of a pouring basin pressure head and the high temperature of metal, thereby avoiding slag blocking failure and pouring failure.

The technical scheme adopted by the utility model for solving the technical problems is as follows: metal separation piece runner basin device is equipped with the runner basin sand box of runner basin sand mould in including to and set up in the foundry goods die cavity of runner basin sand box below, the sprue gate of runner basin sand mould and the sprue intercommunication of foundry goods die cavity, including the metal separation piece, the metal separation piece sets up in the sprue gate, and the plane in metal separation piece place is perpendicular with the central axis of sprue gate, be provided with separation piece aperture on the metal separation piece.

Further, an upper refractory ceramic pipe and a lower refractory ceramic pipe are sleeved in the pouring opening, and the metal blocking piece is arranged between the upper refractory ceramic pipe and the lower refractory ceramic pipe.

Further, the diameter of the upper refractory ceramic pipe is the same as that of the lower refractory ceramic pipe, and the diameter range is 80mm-110 mm.

Further, the diameter range of the small hole of the barrier sheet is 2mm-5 mm.

Further, the thickness range of the small holes of the barrier sheet is 1mm-3.5 mm.

Furthermore, the metal barrier sheet is made of Q235 steel.

Further, a pouring basin lifting dam is arranged at the bottom of a pouring basin formed by the pouring basin sand mold, and a slag blocking core is arranged on the pouring basin lifting dam.

Further, the gap distance between the pouring basin lifting dam and the bottom of the slag stopping core ranges from 40mm to 50 mm.

Further, the casting cavity is communicated with the sprue through an ingate.

Further, the inner pouring channel and the straight pouring channel are communicated through a cross pouring channel.

The utility model has the beneficial effects that: due to the existence of the metal barrier sheet, at the initial casting stage, due to the tension of the molten metal and the influence of the initial metal barrier sheet on the temperature of the molten metal, the molten metal cannot enter the sprue from the small holes of the barrier sheet, so that the defects of cold shut, slag inclusion and the like are avoided. And then, the metal blocking plate begins to melt at the small hole of the blocking plate, and the molten iron begins to gradually flow into the casting cavity in large quantity until the pouring is finished. The utility model has simple structure and convenient use, and effectively avoids the problems of slag stopping failure and pouring failure. The utility model is especially suitable for casting occasions.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic view of a metal barrier sheet of the present invention.

Labeled as: the pouring basin sand mould comprises a pouring basin sand mould 1, a pouring basin sand box 2, a sand box lifting lug 3, a pouring basin 4, a slag blocking core 5, a metal blocking piece 6, an upper refractory ceramic pipe 7, a lower refractory ceramic pipe 8, a casting sand mould 9, a sprue 10, a cross runner 11, an inner runner 12, a casting cavity 13, a pouring gate 14, a sand box air outlet 21, a pouring basin lifting dam 51 and a blocking piece small hole 61.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

The metal blocking piece pouring gate basin device shown in fig. 1 and 2 comprises a pouring gate basin sand box 2 internally provided with a pouring gate basin sand mold 1 and a casting cavity 13 arranged below the pouring gate basin sand box 2, wherein a pouring gate 14 of the pouring gate basin sand mold 1 is communicated with a sprue 10 of the casting cavity 13 and comprises a metal blocking piece 6, the metal blocking piece 6 is arranged in the pouring gate 14, the plane where the metal blocking piece 6 is located is vertical to the central axis of the pouring gate 14, and a blocking piece small hole 61 is formed in the metal blocking piece 6.

In order to better realize the arrangement of the metal baffle plate 6 in the pouring gate 14 and ensure the stable position of the metal baffle plate 6 during casting, the following scheme is preferred: the pouring gate 14 is internally sleeved with an upper refractory ceramic pipe 7 and a lower refractory ceramic pipe 8, and the metal blocking plate 6 is arranged between the upper refractory ceramic pipe 7 and the lower refractory ceramic pipe 8. The upper and lower refractory ceramic tubes 7 and 8 firmly seize the metal barrier sheet 6 so that the process is maintained even when the metal barrier sheet 6 is melted. The barrier metal sheet 6 is preferably made of Q235 steel.

In combination with practice, in order to ensure the quality of processing, it is preferable that the upper and lower refractory ceramic tubes 7 and 8 have the same diameter, which is in the range of 80mm to 110 mm. Similarly, the diameter range of the small hole 61 of the barrier plate is preferably 2mm-5mm, and the thickness range of the small hole 61 of the barrier plate is preferably 1mm-3.5mm, so that the stable and controllable flow of molten iron is ensured.

Preferably, a pouring basin lifting dam 51 is arranged at the bottom of the pouring basin 4 formed by the pouring basin sand mold 1, and a slag stopping core 5 is arranged on the pouring basin lifting dam 51. The gate pot dam 51 divides the gate pot 4 into left and right sides. As shown in figure 1, when pouring is started, molten metal is poured into the pouring basin 4, a liquid falling point is on the left side of the pouring basin lifting dam 51 and is far away from the pouring gate 14 on the right side of the dam, and when the proper pouring speed is reached, the molten metal flows into the right side of the pouring basin lifting dam 51, so that horizontal vortex is prevented from being formed at the pouring gate 14 due to the fact that the liquid level is low, and gas and slag are favorably separated. Preferably, the gap distance between the tundish dam 51 and the bottom of the slag stopper 5 is in the range of 40mm to 50 mm.

In actual use, the casting cavity 13 is preferably communicated with the sprue 10 through the ingate 12, and the ingate 12 is preferably communicated with the sprue 10 through the runner 11, so that smooth casting is ensured.

As shown in fig. 1 and 2, a pouring basin sand mold 1 is provided in the pouring basin sand mold 2, a pouring basin 4 is formed in a cavity inside the pouring basin sand mold 1, and the pouring basin 4 has an inclined surface provided for facilitating a mold drawing for molding the pouring basin when the pouring basin is manufactured. The side surface of the pouring basin sand box 2 is provided with a sand box lifting lug 3, so that the pouring basin sand box 2 can be conveniently lifted and turned when the pouring basin is manufactured. The outer side of the pouring basin sand box 2 is provided with a plurality of sand box air outlet holes 21 which have the function that after high-temperature molten iron enters the pouring basin, the high-temperature molten iron reacts with the sand mould to generate a large amount of sulfide gas, hydrogen gas and the like, and the pouring basin sand box is opened for preventing the gas from entering the casting cavity 13 along with the molten metal. A pouring gate 14 is arranged on the right side of the bottom of the pouring gate basin sand mold 1, a metal blocking piece 6, an upper refractory ceramic pipe 7 and a lower refractory ceramic pipe 8 are arranged in the pouring gate 14, and the metal blocking piece 6 is in contact with the lower end of the upper refractory ceramic pipe 7 and is arranged at the upper end of the lower refractory ceramic pipe 8. Generally, the diameter and thickness of the metal barrier sheet 6 and barrier sheet apertures 61 increase with increasing casting weight. The diameter of the metal barrier sheet 6, the diameter of the pouring gate 14, the diameter of the outer wall of the upper refractory ceramic tube 7 and the diameter of the outer wall of the upper refractory ceramic tube 7 are the same, and the preferred diameter is 80mm-110 mm; the diameter of the small hole 61 of the barrier sheet is preferably 2mm-5 mm; the thickness of the metal barrier sheet 6 is preferably 1mm to 3.5 mm. At the beginning of casting, no cold metal liquid enters the sprue 10 from the barrier sheet orifice 61 due to the tension of the metal liquid and the influence of the initial metal barrier sheet 6 on the temperature of the metal liquid. According to the size of the aperture, the time of the metal liquid flow is different, in the embodiment, when the diameter of the small hole is 2mm, the metal can last for more than 8s in the pouring basin, at the moment, the iron liquid in the pouring basin is in a full or nearly full state, at the moment, the liquid level of the pouring basin 4 is basically full, and the oxidizing slag and the like float up to the liquid level, so that the purity of the metal liquid is ensured. The small holes 61 of the blocking sheet begin to melt and rapidly expand along with the lapse of time, and the liquid outlet flow of the pouring gate 14 is controlled, so that the problem of slag blocking failure caused by vortex is solved; further, under the action of pressure, the metal blocking sheet 6 is instantaneously damaged and melted, and a large flow of molten metal enters the sprue 10 to complete the casting within a specified time. And a slag blocking core 5 is arranged in the middle of the pouring basin 4. When pouring is started, the liquid dropping point is on the left side of the dam of the pouring basin 4, and metal liquid flows into the right side of the dam after the pouring speed is reached, so that horizontal vortex is prevented from being formed at the pouring gate 14 due to the fact that the liquid level is low, and gas and slag are separated conveniently. As time increases, the oxidizing slag floating on the liquid level on the left side of the dam is blocked by the slag blocking core 5, the oxidizing slag and the like are blocked to a certain extent from flowing into the sprue 11 along with molten metal, and the yield of castings is improved.

The whole casting process is described below with reference to the casting example.

When pouring is started, molten metal is poured into the pouring basin 4, the liquid falling point is located on the left side of the pouring basin lifting dam 51 and is far away from the pouring gate 14 on the right side of the pouring basin lifting dam 51, and when the proper pouring speed is reached, the molten metal flows into the right side of the pouring basin lifting dam 51, so that horizontal vortex is prevented from being formed at the pouring gate 14 due to the fact that the liquid level is low, and gas and slag are separated conveniently. When the sprue basin 4 is filled with the mold, the metal liquid cannot enter the sprue 10 from the small hole 61 of the blocking piece due to the tension of the metal liquid and the influence of the initial metal blocking piece 6 on the temperature of the metal liquid within the time range of less than 8s, so that the defects of cold shut, slag inclusion and the like are avoided. When the pouring time is 8-11s, the metal barrier sheet 6 begins to melt at the small hole 61 of the barrier sheet, the pouring basin 4 is in a fully poured state, all dregs can float on the surface of molten iron, and the slag stopping core 5 also plays a role in secondary slag stopping at the same time, so that the purity of the molten iron is fully ensured. When the pouring time is 11-13s and the liquid flow column is about 40-60%, the metal blocking sheet 6 can be instantaneously damaged and melted under the action of pressure and high temperature, and large-flow molten iron is injected into the sprue 10 and enters the die cavity. After the pouring time is about 8s, the liquid flow is increased continuously, so that the liquid level of the molten iron poured into the pouring basin from the ladle is kept basically unchanged, and the molten iron flows into the casting cavity 13 through the sprue 10, the cross runner 11 and the ingate 12 in sequence until the pouring is finished.

Claims (10)

1. Metal separation piece runner basin device is equipped with runner basin sand box (2) of runner basin sand mould (1) in including to and set up in casting die cavity (13) of runner basin sand box (2) below, sprue gate (14) of runner basin sand mould (1) and sprue (10) intercommunication of casting die cavity (13), its characterized in that: the pouring gate structure comprises a metal blocking sheet (6), wherein the metal blocking sheet (6) is arranged in a pouring gate (14), the plane of the metal blocking sheet (6) is vertical to the central axis of the pouring gate (14), and a blocking sheet small hole (61) is formed in the metal blocking sheet (6).

2. The metal barrier sheet runner pot apparatus of claim 1, wherein: an upper refractory ceramic pipe (7) and a lower refractory ceramic pipe (8) are sleeved in the pouring gate (14), and the metal blocking piece (6) is arranged between the upper refractory ceramic pipe (7) and the lower refractory ceramic pipe (8).

3. The metal barrier sheet runner pot apparatus of claim 2, wherein: the diameters of the upper refractory ceramic pipe (7) and the lower refractory ceramic pipe (8) are the same, and the diameter range is 80mm-110 mm.

4. The metal barrier sheet runner pot apparatus of claim 1, 2 or 3, wherein: the diameter range of the small holes (61) of the barrier sheet is 2mm-5 mm.

5. The metal barrier sheet runner pot apparatus of claim 1, 2 or 3, wherein: the thickness range of the small holes (61) of the barrier sheet is 1mm-3.5 mm.

6. The metal barrier sheet runner pot apparatus of claim 1, 2 or 3, wherein: the metal barrier sheet (6) is made of Q235 steel.

7. The metal barrier sheet runner pot apparatus of claim 1, 2 or 3, wherein: a pouring basin lifting dam (51) is arranged at the bottom of a pouring basin (4) formed by the pouring basin sand mold (1), and a slag blocking core (5) is arranged on the pouring basin lifting dam (51).

8. The metal barrier sheet runner pot apparatus of claim 1, 2 or 3, wherein: the gap distance between the pouring basin lifting dam (51) and the bottom of the slag blocking core (5) ranges from 40mm to 50 mm.

9. The metal barrier sheet runner pot apparatus of claim 1, 2 or 3, wherein: the casting cavity (13) is communicated with the sprue (10) through an ingate (12).

10. The metal barrier sheet runner pot apparatus of claim 9, wherein: the inner pouring channel (12) is communicated with the straight pouring channel (10) through a cross pouring channel (11).

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