CN213002538U

CN213002538U - Three-cooling device for inhibiting surface cold shut and cracks of large magnesium alloy plate blank

Info

Publication number: CN213002538U
Application number: CN202021808511.3U
Authority: CN
Inventors: 黄小波; 崔建忠; 房中学; 李宵; 郭长付
Original assignee: Suide Shaanxi Dream Magnesium Alloy Material Co ltd
Current assignee: Suide Shaanxi Dream Magnesium Alloy Material Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-04-20
Anticipated expiration: 2030-08-26

Abstract

The utility model discloses a restrain three cold charge of big slab surface cold shut of magnesium alloy and crackle, including the crystallizer, the inside of crystallizer is equipped with the cold water circulating pipe, the upper surface left and right sides of crystallizer all is equipped with the water pipe, the inboard below of outer wall of water pipe is from the front to back equidistance in proper order and is installed many nozzles. This restrain three cold charge of big slab surface cold shut of magnesium alloy and crackle is put, through the crystallizer, the cold water circulating pipe, the water pipe, the nozzle, the lantern ring, the cooperation between support and the three cold mechanisms, supply power with the fan and make the fan blow upwards and the fan below can produce certain suction, can increase the air velocity around crystallizer and the slab, can make the moisture that remains in the crystallizer and the slab outside evaporate the heat absorption, realize three cold cooling operations, the mode of regulation of liquid cave degree of depth has been increased, be favorable to restraining the production of crackle better, be favorable to improving casting speed and production efficiency, and improve product quality.

Description

Three-cooling device for inhibiting surface cold shut and cracks of large magnesium alloy plate blank

Technical Field

The utility model relates to a casting technical field specifically is a three cold charge of big slab surface cold shut of suppression magnesium alloy and crackle is put.

Background

Cold shut is one of the cast terms, it is in the process that magnesium alloy liquid flows in the crystallizer (mould), the temperature reduces gradually to say that when two liquid are amalgamating, the liquid surface is basically in the solidification state, lead to amalgamating position can not be in the complete fusion together, namely appear the intermediate layer from the slab outward appearance, cold shut is the casting defect, the cold shut is bigger, the more that the surface layer gets rid of in the course of working, the yield also reduces, in order to solve the cold shut problem, can suitably improve the casting speed, keep the liquid level not to turn over flower, in order to solve the fracture problem, can fully stir when slab casting begins to lay the end, suitably increase the thickness, control casting speed, the speed can hot crack too fast, the speed can be cold, the semi-continuous casting adopted at present is the direct cooling mode, only one cold and two cold, one cold: the crystallizer is hollow in structure, internal circulation is formed in a hollow inner cavity of the crystallizer after water is fed from a water inlet hole of the crystallizer, and metal liquid is cooled from a liquid state to a solid state through heat conduction of an inner sleeve material, and the metal liquid is cooled for the second time: the rectangular inner sleeve (for rod material, circular inner sleeve) for forming plate blank is forged aluminium alloy (some also uses copper alloy), its bottom portion is drilled with a circle of holes with identical diameter from hollow inner cavity to oblique downward direction of inner wall of crystallizer, and from hollow inner cavity the water is sprayed out by means of water pressure, and sprayed on the surface of cast plate blank (also is used for circular rod material), and the surface temperature of plate blank extended from base seat of crystallizer is very high, and by means of secondary cooling, it can reduce internal and external temp. difference of plate blank, reduce liquid cavity depth, reduce internal and external temp. difference and tensile stress resulted from contraction in the course of casting process so as to reduce crack production, and the liquid cavity depth can be regulated only by means of casting speed and water flow, water temp. regulation of cooling water, etc., and has no need of setting three-cooling mechanism, and can not increase regulation mode of liquid cavity depth, so that it is favourable for inhibiting crack production, is not beneficial to improving the casting speed and the production efficiency and can not improve the product quality.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a purpose is at three cold devices of face cold shut and crackle to solve all direct cooling modes that present semicontinuous casting that proposes in the above-mentioned background art adopts, only one cold and two are cold, one is cold: the crystallizer is hollow in structure, internal circulation is formed in a hollow inner cavity of the crystallizer after water is fed from a water inlet hole of the crystallizer, and metal liquid is cooled from a liquid state to a solid state through heat conduction of an inner sleeve material, and the metal liquid is cooled for the second time: the rectangular inner sleeve (for rod material, circular inner sleeve) for forming plate blank is forged aluminium alloy (some also uses copper alloy), its bottom portion is drilled with a circle of holes with identical diameter from hollow inner cavity to oblique downward direction of inner wall of crystallizer, and from hollow inner cavity the water is sprayed out by means of water pressure, and sprayed on the surface of cast plate blank (also is used for circular rod material), and the surface temperature of plate blank extended from base seat of crystallizer is very high, and by means of secondary cooling, it can reduce internal and external temp. difference of plate blank, reduce liquid cavity depth, reduce internal and external temp. difference and tensile stress resulted from contraction in the course of casting process so as to reduce crack production, and the liquid cavity depth can be regulated only by means of casting speed and water flow, water temp. regulation of cooling water, etc., and has no need of setting three-cooling mechanism, and can not increase regulation mode of liquid cavity depth, so that it is favourable for inhibiting crack production, is not beneficial to improving the casting speed and the production efficiency and can not improve the product quality.

In order to achieve the above object, the utility model provides a following technical scheme: a triple cooling device for inhibiting surface cold shut and cracks of a magnesium alloy large plate blank comprises a crystallizer, wherein a cold water circulating pipe is arranged inside the crystallizer, water pipes are arranged on the left side and the right side of the upper surface of the crystallizer respectively, multiple nozzles are sequentially and equidistantly arranged from front to back below the inner side of the outer wall of each water pipe, lantern rings are sleeved at the left end and the right end of the outer wall of each water pipe respectively, a support is fixedly connected to the bottom end of the outer wall of each lantern ring, the bottom end of each support is fixedly connected with a contact surface of the crystallizer, and a triple cooling mechanism is arranged above the crystallizer;

the three-cooling mechanism comprises a fan, a support rod, a vertical rod, a square plate and a cross rod;

the fan is located directly over the crystallizer, the equal rigid coupling in outer wall bottom left and right sides of fan has branch, the outer wall bottom outside rigid coupling of branch has the pole setting, the other end rigid coupling of pole setting has the square board, the equal rigid coupling in both ends has the horizontal pole around the internal side surface of square board, the horizontal pole links to each other with the contact surface of crystallizer is fixed.

Preferably, the inner wall of the lantern ring is in annular sliding clamping connection with a plurality of balls, and the balls are attached to the outer wall of the water flowing pipe.

Preferably, the left side and the right side of the crystallizer are provided with a uniform mechanism;

the uniform mechanism comprises a case, a disc, a bump, a vertical rod, a sleeve, a supporting rod and a supporting plate;

two the quick-witted case rigid coupling is in the outer wall left and right sides of crystallizer respectively, the front surface of machine case is equipped with the disc, the front surface top of disc articulates there is the lug, the other end of lug articulates there is the montant, the sleeve has been cup jointed to the outer wall of montant, the equal rigid coupling in both ends has the die-pin about the telescopic outer wall, the other end of die-pin links to each other with the contact surface of crystallizer is fixed, the top of montant articulates there is the extension board, the right side of extension board links to each other with the outer wall left side of walking the.

Preferably, the support rod is matched with the contact surface of the outer wall of the sleeve.

Preferably, an auxiliary mechanism is arranged at the bottom end of the crystallizer;

the auxiliary mechanism comprises a groove plate, a support column and a drain pipe;

the frid is located the below of crystallizer, the equal rigid coupling in inside bottom center four corners of frid has the pillar, the other end of pillar links to each other with the lower fixed surface of crystallizer, the equal rigid coupling in left and right sides bottom of frid has the drain pipe, the drain pipe is each other for the intercommunication with the frid.

Preferably, a plurality of said pillars is centrosymmetric with respect to a central point of the crystallizer.

Compared with the prior art, the beneficial effects of the utility model are that: compared with the prior art, the three-cooling device for inhibiting the surface cold shut and the cracks of the large magnesium alloy plate blank has the following advantages:

through the matching between the crystallizer, the cold water circulating pipe, the water flowing pipe, the nozzle, the lantern ring, the bracket and the three-cooling mechanism, when the slab in the crystallizer needs to be relatively operated, an operator starts an external water supply device to enable the cold water circulating pipe to generate cold water circulation to cool the crystallizer and the internal slab, meanwhile, clear water flowing in the water flowing pipe can be sprayed out through the nozzle to be contacted with the slab, so that the temperature difference between the inside and the outside of the slab can be reduced, meanwhile, the fan is powered to enable the fan to blow upwards and generate certain suction below the fan, the air flow rate around the crystallizer and the slab can be increased, moisture remained on the outer sides of the crystallizer and the slab can be evaporated and absorbed, the three-cooling operation is realized, the adjustment mode of the depth of liquid cavities is increased, the generation of cracks can be better inhibited, and the casting speed and the, and improve the product quality.

Through the crystallizer, the cold water circulating pipe, the water pipe, the nozzle, the lantern ring, a support, the cooperation between three cold mechanisms and the even mechanism, spray the clear water in-process to the inside slab of crystallizer at the nozzle, operating personnel supplies power with the motor of quick-witted incasement portion, make the plectane rotate, transmission through the lug can make the montant carry out upper and lower intermittent type nature motion, transmission through the extension board can make the water pipe that walks carry out intermittent type nature swing in the inside of the lantern ring, can make the nozzle spray the clear water when can swing and spray, homogeneity when can promoting the nozzle and spraying the slab, can further do benefit to the production that restraines the crackle better, casting speed and production efficiency are improved.

Through the cooperation between crystallizer, cold water circulating pipe, walking water pipe, nozzle, the lantern ring, support, three cold mechanisms, even mechanism and the complementary unit, at the inside slab cooling operation in-process of crystallizer, the water stain majority of spraying department can enter into the frid inside and save, reduces the water stain probability of wantonly fluid, inside discharging outside water circle device through the drain pipe, can promote the work around the crystallizer and renew, do benefit to and use widely.

Drawings

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

FIG. 2 is a schematic view of the connection structure of the crystallizer, the water feed pipe and the homogenizing mechanism in FIG. 1;

FIG. 3 is a schematic view showing a connection structure of the mold, the water feed pipe and the support in FIG. 1;

fig. 4 is a schematic view of a connection structure of the mold, the disc and the projection of fig. 1.

In the figure: 1. crystallizer, 2, cold water circulating pipe, 3, water pipe, 4, nozzle, 5, lantern ring, 6, support, 7, three cold mechanism, 701, fan, 702, support rod, 703, vertical rod, 704, square plate, 705, cross rod, 8, uniform mechanism, 801, cabinet, 802, disc, 803, bump, 804, vertical rod, 805, sleeve, 806, supporting rod, 807, support plate, 9, auxiliary mechanism, 901, trough plate, 902, support column, 903, drain pipe, 10 and ball.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a three-cooling device for inhibiting cold isolation and cracks on the surface of a magnesium alloy large slab comprises a crystallizer 1, a cold water circulating pipe 2 is arranged inside the crystallizer 1, water pipes 3 are arranged on the left side and the right side of the upper surface of the crystallizer 1, the outer side ends of the cold water circulating pipe 2 and the water pipes 3 are connected with an external water supply device in a butt joint mode, water circulation can be provided for the interiors of the cold water circulating pipe 2 and the water pipes 3, a plurality of nozzles 4 are sequentially and equidistantly arranged on the lower portion of the inner side of the outer wall of the water pipes 3 from front to back, the nozzles 4 are communicated with the water pipes 3, lantern rings 5 are sleeved on the left end and the right end of the outer wall of the water pipes 3, a support 6 is fixedly connected to the bottom end of the outer wall of the lantern ring 5, a three-cooling mechanism 7 is arranged above the crystallizer 1, the three-cooling mechanism 7 comprises a fan 701, a support rod 702, a vertical rod 703, the equal rigid coupling in outer wall bottom left and right sides of fan 701 has branch 702, fan 701's power cord docks with external power supply unit, the outer wall bottom outside rigid coupling of branch 702 has pole setting 703, the other end rigid coupling of pole setting 703 has square board 704, the equal rigid coupling in both ends has horizontal pole 705 around the inboard surface of square board 704, horizontal pole 705 links to each other with the contact surface of crystallizer 1 is fixed, the inner wall of the lantern ring 5 is annular slip joint has a plurality of balls 10, ball 10 laminates mutually with the outer wall of walking water pipe 3, ball 10 can roll in the inside of the lantern ring 5, but unable 5 phase separations with the lantern ring, can increase the frictional force between the lantern ring 5 and the walking water pipe 3 outer wall.

The left side and the right side of the crystallizer 1 are provided with the uniform mechanism 8, the uniform mechanism 8 comprises a case 801, a disc 802, a bump 803, a vertical rod 804, a sleeve 805, a supporting rod 806 and a supporting plate 807, the two cases 801 are respectively and fixedly connected with the left side and the right side of the outer wall of the crystallizer 1, the front surface of the case 801 is provided with the disc 802, the interior of the case 801 is provided with a motor with the model number of 42JSF330AS, a power cord of the motor is butted with an external power supply device, an output shaft of the motor penetrates through the case 801 and is fixedly connected with the center of the rear side surface of the disc 802, the output shaft of the motor is rotatably connected with the case 801 through a sealing bearing, the bump 803 is hinged above the front surface of the disc 802, the other end of the bump 803 is hinged with the vertical rod 804, the outer wall of the vertical rod 804 is sleeved with the sleeve 805, the outer wall of the vertical, the top end of the vertical rod 804 is hinged with a support plate 807, the right side of the support plate 807 is fixedly connected with the left side of the outer wall of the water flowing pipe 3, and the support rod 806 is matched with the contact surface of the outer wall of the sleeve 805, so that the support rod 806 can be in full contact with the outer wall of the sleeve 805.

The bottom of crystallizer 1 is equipped with complementary unit 9, complementary unit 9 includes frid 901, pillar 902 and drain pipe 903, frid 901 is located the below of crystallizer 1, the equal rigid coupling in inside bottom center four corners of frid 901 has pillar 902, the other end of pillar 902 links to each other with the lower fixed surface of crystallizer 1, the equal rigid coupling in left and right sides bottom of frid 901 has drain pipe 903, drain pipe 903 and frid 901 each other are the intercommunication, the outside end of drain pipe 903 meets with external water circle device mutually, a plurality of pillars 902 are central symmetry for the central point of crystallizer 1.

When the triple cooling device for inhibiting the cold insulation and cracks on the surface of the large magnesium alloy slab needs to perform relatively operation on the slab inside the crystallizer in the using process, an operator starts an external water supply device to enable cold water generated inside a cold water circulating pipe 2 to circulate and cool the crystallizer 1 and the slab inside, clear water flowing inside a water outlet pipe 3 can be sprayed out through a nozzle 4 to be contacted with the slab, meanwhile, the operator supplies power to a motor inside a case 801 to enable a circular plate 802 to rotate, a vertical rod 804 can perform vertical intermittent motion through the transmission of a convex block 803, the water outlet pipe 3 can intermittently swing inside a lantern ring 5 through the transmission of a support plate 807, the nozzle 4 can perform swinging spraying when spraying clear water, the uniformity of the spray nozzle 4 during spraying can be improved, and the temperature difference inside and outside the slab can be reduced, reduce the liquid cave degree of depth, alleviate the inside and outside difference in temperature in the casting process and because of the tensile stress that the shrink caused, thereby reduce the production of crackle, supply power with fan 701 simultaneously and make fan 701 upwards blow and fan 701 below can produce certain suction, can increase air flow rate around crystallizer 1 and the slab, can make the moisture that remains in the crystallizer 1 and the slab outside evaporate the heat absorption, realize three cold cooling operations, the regulation mode of liquid cave degree of depth has been increased, be favorable to inhibiting the production of crackle better, be favorable to improving casting speed and production efficiency, and improve product quality.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A three-cooling device for inhibiting the surface cold shut and cracks of a large magnesium alloy plate blank comprises a crystallizer (1), and is characterized in that: the cooling water circulation pipe (2) is arranged in the crystallizer (1), water pipes (3) are arranged on the left side and the right side of the upper surface of the crystallizer (1), multiple nozzles (4) are sequentially and equidistantly arranged from front to back below the inner side of the outer wall of each water pipe (3), lantern rings (5) are sleeved at the left end and the right end of the outer wall of each water pipe (3), a support (6) is fixedly connected to the bottom end of the outer wall of each lantern ring (5), the bottom end of each support (6) is fixedly connected with the contact surface of the crystallizer (1), and a triple cooling mechanism (7) is arranged above the crystallizer (1);

the three-cooling mechanism (7) comprises a fan (701), a support rod (702), an upright rod (703), a square plate (704) and a cross rod (705);

fan (701) are located crystallizer (1) directly over, the equal rigid coupling in outer wall bottom left and right sides of fan (701) has branch (702), the outer wall bottom outside rigid coupling of branch (702) has pole setting (703), the other end rigid coupling of pole setting (703) has square plate (704), the equal rigid coupling in both ends has horizontal pole (705) around the inboard surface of square plate (704), horizontal pole (705) link to each other with the contact surface of crystallizer (1) is fixed.

2. The triple cooling device for inhibiting the surface cold shut and the cracks of the large magnesium alloy slab according to claim 1, characterized in that: the inner wall of the lantern ring (5) is in annular sliding clamping connection with a plurality of balls (10), and the balls (10) are attached to the outer wall of the water flowing pipe (3).

3. The triple cooling device for inhibiting the surface cold shut and the cracks of the large magnesium alloy slab according to claim 1, characterized in that: the left side and the right side of the crystallizer (1) are provided with a uniform mechanism (8);

the uniform mechanism (8) comprises a case (801), a disc (802), a bump (803), a vertical rod (804), a sleeve (805), a supporting rod (806) and a supporting plate (807);

two machine case (801) rigid coupling is in the outer wall left and right sides of crystallizer (1) respectively, the front surface of machine case (801) is equipped with disc (802), the front surface top of disc (802) articulates there is lug (803), the other end of lug (803) articulates there is montant (804), sleeve (805) have been cup jointed to the outer wall of montant (804), the equal rigid coupling in both ends has die-pin (806) about the outer wall of sleeve (805), the other end of die-pin (806) links to each other with the contact surface of crystallizer (1) is fixed, the top of montant (804) articulates there is extension board (807), the right side of extension board (807) links to each other with the outer wall left side of walking pipe (3) is fixed.

4. The triple cooling device for inhibiting the surface cold shut and the cracks of the large magnesium alloy slab according to claim 3, wherein: the supporting rod (806) is matched with the contact surface of the outer wall of the sleeve (805).

5. The triple cooling device for inhibiting the surface cold shut and the cracks of the large magnesium alloy slab according to claim 1, characterized in that: an auxiliary mechanism (9) is arranged at the bottom end of the crystallizer (1);

the auxiliary mechanism (9) comprises a groove plate (901), a support column (902) and a drain pipe (903);

the crystallizer is characterized in that the groove plate (901) is located below the crystallizer (1), pillars (902) are fixedly connected to four corners of the center of the bottom end of the inner portion of the groove plate (901), the other ends of the pillars (902) are fixedly connected with the lower surface of the crystallizer (1), drain pipes (903) are fixedly connected to the bottom ends of the left side and the right side of the groove plate (901), and the drain pipes (903) are communicated with the groove plate (901).

6. The triple cooling device for inhibiting the surface cold shut and the cracks of the large magnesium alloy slab according to claim 5, wherein: the plurality of pillars (902) are centrosymmetric with respect to a center point of the mold (1).