CN111842843A - Casting crucible with inner surface coated and cleaned - Google Patents
Casting crucible with inner surface coated and cleaned Download PDFInfo
- Publication number
- CN111842843A CN111842843A CN202010784551.7A CN202010784551A CN111842843A CN 111842843 A CN111842843 A CN 111842843A CN 202010784551 A CN202010784551 A CN 202010784551A CN 111842843 A CN111842843 A CN 111842843A
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- China
- Prior art keywords
- wall
- cavity
- working
- fixedly connected
- pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D45/00—Equipment for casting, not otherwise provided for
Abstract
The invention discloses a casting crucible for coating and cleaning an inner surface, which comprises a working box, wherein a working cavity is arranged in the working box, a variable pressure cavity is arranged on the inner wall of the left side of the working cavity, a variable pressure cavity sliding chute which is positioned on the right side of the variable pressure cavity and is communicated in the left and right directions is arranged on the inner wall of the left side of the working cavity, pressure is provided for backflow of low-pressure casting metal liquid through a pressurizing device, the metal liquid is well solidified in a mould, heat-insulating and anti-corrosion substances are uniformly coated on the circumferential inner wall of the device through a coating device, the reaction of the metal liquid with the circumferential inner wall is reduced in the working cavity so as to avoid impurities to influence the quality of a cast molding casting, power is provided for the whole device through a power device, and the efficiency and the process quality during casting.
Description
Technical Field
The invention relates to the technical field of casting, in particular to a casting crucible with a clean inner surface coated.
Background
The low-pressure casting is a casting method in which a casting mold is generally placed above a sealed crucible, compressed air is introduced into the crucible, a low pressure (0.06 to 0.15 MPa) is generated on the surface of molten metal, and the molten metal is lifted from a lift tube to fill the casting mold and control solidification. The casting method has the advantages of good feeding, compact casting structure, easy casting of large thin-wall complex castings, no need of risers and high metal yield of 95%.
The metal liquid rises in the liquid lifting channel through the pressure difference so as to be filled in the die, and although the obtained casting has good quality, the inner wall of the working cavity is easy to corrode in the working cavity, so that impurities are mixed in the metal liquid, and the quality of the finally obtained casting is reduced.
Disclosure of Invention
The technical problem is as follows: the low-pressure casting causes the molten metal to rise in the liquid lifting channel through the pressure difference so as to be filled in the mold, and although the obtained casting has good quality, the inner wall of the working cavity is easy to corrode in the working cavity, so that impurities are mixed in the molten metal, and the quality of the finally obtained casting is reduced.
In order to solve the problems, the crucible for casting with the inner surface coating and the inner surface cleaning is designed in the embodiment, the crucible for casting with the inner surface coating and the inner surface cleaning comprises a working box, a working chamber is arranged in the working box, a variable pressure chamber is arranged on the inner wall of the left side of the working chamber, a variable pressure chamber sliding chute which is positioned on the right side of the variable pressure chamber and is communicated with the left side and the right side is arranged on the inner wall of the left side of the working chamber, a left box wall chamber which is communicated with the left side and the right side is arranged on the inner wall of the left side of the box wall chamber, a rotary switch which is positioned on the left side of the left box wall chamber is rotationally connected on the left end face of the working box, pressurizing devices which are used for changing the pressure in the working chamber are arranged in the variable pressure chamber sliding chute, fixed pins which are positioned in the variable pressure chamber and extend to the working, the lower end face of the moving rod is fixedly connected with a piston block, the inner wall of the left side of the working cavity is rotatably connected with a rotating shaft extending into the pressure changing cavity, the rotating shaft is fixedly connected with a pressure changing switch block which can be abutted against the inner wall of the lower side of the pressure changing cavity, the inner wall of the left side of the working cavity is provided with a pressure changing outlet groove which is positioned between the pressure changing cavity and the wall cavity of the left box and is communicated up and down, compressed air in the pressure changing cavity is pressed into the working cavity through the pressure changing outlet groove according to the up-down movement of the fixed pin and the rotation of the rotating shaft, the working cavity is internally provided with an smearing device used for smearing heat insulation and corrosion release substances on the inner wall of the periphery of the working cavity, the smearing device comprises a smearing piston disc which is positioned in the working cavity in a sliding manner, two storage cavities are symmetrically, two the slide with two store the chamber and be close to the side inner wall of symmetric center through two slide spring coupling, two store the chamber and keep away from the side inner wall of symmetric center and be equipped with about two and store the chamber export of lining up, according to the rotation of paining the piston dish makes to insulate against heat to put corrosive substance and passes through because of centrifugal force store the chamber export and be paintd on the peripheral inner wall of working chamber, be equipped with the power device who is used for transmitting power in the working chamber.
Preferably, the pressure device further comprises a reset wheel shaft connected with the inner wall of the upper side of the working chamber in a rotating manner, the reset wheel shaft is fixedly connected with a reset wheel with an outer circumferential end face being a wave-shaped groove, the outer circumferential end face of the reset wheel is in the wave-shaped groove, the fixed pin is abutted against the right end face of the outer circumferential end face of the reset wheel, the reset wheel shaft is fixedly connected with a driven bevel gear arranged on the lower side of the reset wheel, the inner wall of the upper side of the working chamber is fixedly connected with a rotating shaft fixing rod connected with the reset wheel shaft in a rotating manner, the rotating shaft is fixedly connected with a driving bevel gear meshed with the driven bevel gear, and the rotating shaft rotates.
Preferably, the smearing device further comprises a vertically-through molten metal outlet arranged on the inner wall of the upper side of the working cavity, the inner wall of the upper side of the working cavity is fixedly connected with a liquid lifting channel, a vertically-through liquid lifting cavity is arranged in the liquid lifting channel, the inner wall of the upper side of the working cavity is rotatably connected with a spline main hollow shaft which is connected with the liquid lifting channel in a sliding manner and is connected with the reset wheel shaft through a belt pulley, a driven hollow shaft is connected onto the spline main hollow shaft through a spline, a rocker connecting rod is abutted onto the side end face of the driven hollow shaft, which is far away from the rotating center, the upper end face of the working cavity is fixedly connected with a transmission shaft fixed rod positioned on the right side of the belt, a rotating disc positioned on the right side of the transmission shaft fixed rod is fixedly connected onto the transmission shaft, and a rocker fixedly, the turntable is rotated according to the rotation of the transmission shaft, the driven hollow shaft is moved up and down through the up-and-down movement of the rocker connecting rod, the driven hollow shaft is far away from a fixed rod fixedly connected to the end face of the side of the rotation center, the transmission shaft fixed rod is far away from a butt-joint block fixedly connected to the end face of the side of the rotation center and abutted against the circumferential inner wall of the working chamber, and the butt-joint block is enabled to clean the inner wall of the working chamber according to the rotation of the driven hollow shaft.
Preferably, the power device include with work box up end fixed connection's motor, the motor right-hand member face is equipped with the main shaft, fixedly connected with primary pulley on the main shaft, fixedly connected with is located in the pivot the primary pulley downside just is located the drive bevel gear with driven pulleys between the pivot dead lever, the primary pulley with driven pulleys passes through the belt and connects, fixedly connected with is located in the pivot the primary sheave on pivot dead lever right side, fixedly connected with on the transmission shaft with the primary sheave meshing just is located the left driven sheave of transmission shaft dead lever, according to the rotation of main shaft makes the pivot and the transmission shaft rotates for whole device transmission power.
The invention has the beneficial effects that: this device provides pressure for the metal liquid refluence of low pressure casting through pressure device, lets the metal liquid the solidification condition good in the mould, and through scribbling the device and scribble thermal-insulated anticorrosive material comparatively evenly on giving the circumference inner wall of device, let the metal liquid reduce in the working chamber with the reaction of circumference inner wall in order to avoid producing the shaping foundry goods quality after the impurity influences is pour, still provide power for whole device through power device, efficiency and technology quality when having improved the casting.
Drawings
For ease of illustration, the invention is described in detail by the following specific examples and figures.
FIG. 1 is a schematic view of the overall structure of a casting crucible of the present invention for coating and cleaning the inner surface;
FIG. 2 is an enlarged schematic view of FIG. 1 at "A";
fig. 3 is a schematic structural view of the engagement between the driven sheave 47 and the main sheave 48 of fig. 1;
fig. 4 is an enlarged schematic view of the structure at "C" of fig. 1.
Detailed Description
The invention will now be described in detail with reference to fig. 1-4, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The invention relates to a casting crucible for coating and cleaning the inner surface, which is mainly applied to the process of pouring molten metal in low-pressure casting, and the invention is further explained by combining the attached drawings of the invention:
the invention relates to a casting crucible for coating and cleaning the inner surface, which comprises a working box 11, wherein a working cavity 12 is arranged in the working box 11, a variable pressure cavity 42 is arranged on the inner wall of the left side of the working cavity 12, a variable pressure cavity sliding chute 14 which is positioned on the right side of the variable pressure cavity 42 and runs through left and right is arranged on the inner wall of the left side of the working cavity 12, a left box wall cavity 32 which runs through left and right is arranged on the inner wall of the left side of the working cavity 12, a rotary switch 31 which is positioned on the left side of the left box wall cavity 32 is rotatably connected on the left end surface of the working box 11, a pressurizing device 901 for changing the pressure in the working cavity 12 is arranged in the working cavity 12, the variable pressure cavity sliding chute 14 and the variable pressure cavity 42, the pressurizing device 901 comprises a fixed pin 43 which is positioned in the variable pressure cavity sliding chute 14 and extends into the working cavity 12 and the variable pressure cavity 42, the fixed, the lower end face of the moving rod 13 is fixedly connected with a piston block 44, the inner wall of the left side of the working cavity 12 is rotatably connected with a rotating shaft 23 extending into the variable pressure cavity 42, the rotating shaft 23 is fixedly connected with a variable pressure switch block 46 capable of abutting against the inner wall of the lower side of the variable pressure cavity 42, the inner wall of the left side of the working cavity 12 is provided with a variable pressure outlet groove 53 which is positioned between the variable pressure cavity 42 and the left box wall cavity 32 and is through up and down, compressed air in the variable pressure cavity 42 is pressed into the working cavity 12 through the variable pressure outlet groove 53 according to the up-and-down movement of the fixing pin 43 and the rotation of the rotating shaft 23, an smearing device 902 used for smearing heat insulation and corrosion release substances on the inner wall of the circumference of the working cavity 12 is arranged in the working cavity 12, the smearing device 902 comprises a smearing piston disc 39 which is positioned in the working cavity 12 and is slidably arranged, and two storage, two the inner wall sliding connection of storage chamber 40 front side has two slide 41, two slide 41 with two storage chamber 40 is close to the symmetry center side inner wall and connects through two slide springs 37, two storage chamber 40 are kept away from the symmetry center side inner wall and are equipped with two storage chamber exports 38 that link up about being equipped with, according to scribble the rotation of piston disc 39 and make thermal-insulated corrosion-releasing material pass through because of centrifugal force storage chamber export 38 is scribbled on the inner wall of working chamber 12 circumference, be equipped with the power device 903 that is used for transmitting power in the working chamber 12.
According to an embodiment, the pressurizing device 901 is described in detail below, the pressurizing device 901 further includes a reset wheel shaft 18 rotatably connected to an upper inner wall of the working chamber 12, a reset wheel 21 having a wavy outer circumferential end surface is fixedly connected to the reset wheel shaft 18, the wavy outer circumferential end surface of the reset wheel 21 abuts against a right end surface of the fixing pin 43, a driven bevel gear 16 located below the reset wheel 21 is fixedly connected to the reset wheel shaft 18, a rotating shaft fixing rod 22 located on a right side of the reset wheel shaft 18 and rotatably connected to the rotating shaft 23 is fixedly connected to an upper inner wall of the working chamber 12, a driving bevel gear 29 engaged with the driven bevel gear 16 is fixedly connected to the rotating shaft 23, and the transformer switch block 46 is rotated and the fixing pin 43 moves up and down according to the rotation of the rotating shaft 23.
According to the embodiment, the details of the smearing device 902 will be described below, the smearing device 902 further includes an up-down through molten metal outlet 28 disposed on an upper inner wall of the working chamber 12, a liquid lifting channel 34 is fixedly connected to the upper inner wall of the working chamber 12, an up-down through liquid lifting chamber 33 is disposed in the liquid lifting channel 34, a splined main hollow shaft 27 slidably connected to the liquid lifting channel 34 and connected to the return wheel shaft 18 via a pulley is rotatably connected to the upper inner wall of the working chamber 12, a driven hollow shaft 51 is splined to the splined main hollow shaft 27, a rocker link 50 is abutted to an end surface of the driven hollow shaft 51 away from the rotation center, a transmission shaft fixing rod 25 disposed on a right side of the belt 20 is fixedly connected to an upper end surface of the working chamber 12, a transmission shaft 24 is rotatably connected to the transmission shaft fixing rod 25, a turntable 26 disposed on a right side of the transmission shaft fixing rod 25, a rocker 49 fixedly connected with the rocker connecting rod 50 at the lower end face is hinged on the right end face of the rotary table 26, the rotary table 26 is rotated according to the rotation of the transmission shaft 24, the driven hollow shaft 51 is moved up and down through the up and down movement of the rocker connecting rod 50, the driven hollow shaft 51 is far away from the end face of the rotation center side and is fixedly connected with a fixed rod 35, the transmission shaft fixed rod 25 is far away from the end face of the rotation center side and is fixedly connected with an abutting block 36 abutted against the circumferential inner wall of the working chamber 12, and the abutting block 36 is enabled to clean the inner wall of the working chamber 12 according to the rotation of the.
In the following, a power unit 903 is described in detail according to an embodiment, the power unit 903 includes a motor 15 fixedly connected to an upper end surface of the work box 11, a main shaft 17 is arranged on the right end face of the motor 15, a main belt wheel 19 is fixedly connected on the main shaft 17, a driven pulley 30 positioned at the lower side of the primary pulley 19 and between the drive bevel gear 29 and the shaft fixing lever 22 is fixedly connected to the shaft 23, the primary belt wheel 19 is connected with the driven belt wheel 30 through a belt 20, a primary sheave 48 positioned at the right side of the rotating shaft fixing rod 22 is fixedly connected to the rotating shaft 23, a driven sheave 47 engaged with the main sheave 48 and positioned at the left side of the transmission shaft fixing rod 25 is fixedly connected to the transmission shaft 24, the rotating shaft 23 and the transmission shaft 24 are rotated according to the rotation of the main shaft 17 to transmit power to the whole device.
The use of a casting crucible coated and cleaned on the inner surface is described in detail below with reference to fig. 1 to 4:
initially, the motor 15 is turned off, the piston block 44 is at the uppermost end, the variable pressure switch block 46 abuts the lower inner wall of the variable pressure chamber 42, and the wiper piston plate 39 is at the uppermost end.
In preparation, molten metal is injected into the working chamber 12, and a mold to be cast is placed on the upper side of the molten metal outlet 28.
In operation, the motor 15 is turned on, the main shaft 17 rotates, the rotating shaft 23 rotates through the connection of the belt 20 with the main belt wheel 19 and the driven belt wheel 30, the rotation of the rotating shaft 23 rotates the driving bevel gear 29 and the main sheave 48 and rotates the reset wheel shaft 18 engaged with the driving bevel gear 29 through the driven bevel gear 16, so that the fixing pin 43 abutted against the wave-shaped groove on the outer circumferential end surface of the reset wheel 21 fixedly connected to the reset wheel shaft 18 moves up and down, the moving rod 13 and the piston block 44 move up and down, the rotation of the rotating shaft 23 simultaneously rotates the variable pressure switch block 46, so that the compressed air in the variable pressure chamber 42 is pressed into the working chamber 12 through the variable pressure outlet groove 53, the molten metal is pressed into the liquid lifting chamber 33 from the lower end, and enters the mold on the upper side of the molten metal outlet 28, after the molten metal is filled in the mold, the rotary switch 31 is opened to release the compressed, after molten metal in the mold is formed, the driven grooved pulley 47 is rotated by the rotation of the main grooved pulley 48, so that the transmission shaft 24 is rotated, the rotary table 26 is rotated by the rotation of the transmission shaft 24, the rocker 49 hinged to the right end face of the rotary table 26 is moved downwards, the rocker connecting rod 50 fixedly connected with the right end face of the rocker 49 is moved downwards, the driven hollow shaft 51 in splined connection with the splined main hollow shaft 27 is moved downwards, the splined main hollow shaft 27 is rotated by the rotation of the reset wheel shaft 18, the smearing piston disc 39 is moved downwards while rotating, the two sliding plates 41 push exothermic corrosive substances in the storage cavity 40 to be smeared on the circumferential inner wall of the working cavity 12 through the storage cavity outlet 38, and the abutting block 36 scrapes residual metal on the circumferential inner wall of the working cavity 12.
The invention has the beneficial effects that: this device provides pressure for the metal liquid refluence of low pressure casting through pressure device, lets the metal liquid the solidification condition good in the mould, and through scribbling the device and scribble thermal-insulated anticorrosive material comparatively evenly on giving the circumference inner wall of device, let the metal liquid reduce in the working chamber with the reaction of circumference inner wall in order to avoid producing the shaping foundry goods quality after the impurity influences is pour, still provide power for whole device through power device, efficiency and technology quality when having improved the casting.
In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.
Claims (4)
1. A crucible for casting, which is coated and cleaned on the inner surface, comprises a working box, a working cavity is arranged in the working box, and the crucible is characterized in that: the pressure-variable switch is characterized in that a pressure-variable cavity is arranged on the inner wall of the left side of the working cavity, a pressure-variable cavity sliding groove which is positioned on the right side of the pressure-variable cavity and is communicated with the left side and the right side is arranged on the inner wall of the left side of the working cavity, a left box wall cavity which is communicated with the left side and the right side is arranged on the inner wall of the left side of the working cavity, the left end face of the working cavity is rotationally connected with a rotary switch which is positioned on the left side of the left box wall cavity, a pressure device which is used for changing the pressure in the working cavity, the pressure device comprises a fixed pin which is positioned in the pressure-variable cavity sliding groove and extends to the working cavity and the pressure-variable cavity, the fixed pin is positioned on the inner section of the pressure-variable cavity and is fixedly connected with a movable rod, the lower end face of the movable rod is fixedly, working chamber left side inner wall is equipped with and is located the variable pressure chamber and the vary voltage export groove that link up from top to bottom between the left side tank wall chamber, be equipped with in the working chamber and be used for the device of paining that the corrosive substance was put to work chamber circumference inner wall scribbles to separate heat, paint the device including being located the sliding piston dish of paining that is equipped with in the working chamber, central symmetry is equipped with two storage chamber in paining the piston dish, two storage chamber front side inner wall sliding connection has two slides, two slide and two the storage chamber is close to symmetrical center side inner wall and passes through two slide spring coupling, two storage chamber keep away from symmetrical center side inner wall and are equipped with about and link up two storage chamber exports, be equipped with the power device who is used for transmitting power in the.
2. A casting crucible as claimed in claim 1, coated and cleaned on the inner surface, characterized in that: pressure device still includes the reset wheel axle that the side inner wall of working chamber upside rotated the connection, the wheel that resets of the epaxial outer circumference terminal surface of fixedly connected with wheel that resets for wave type groove, the outer circumference terminal surface wave type groove that resets with fixed pin right-hand member face butt, the epaxial fixedly connected with of reset wheel is located the driven bevel gear of the wheel downside that resets, side inner wall fixedly connected with of working chamber upside is located reset wheel axle right side and with the pivot is rotated the pivot dead lever of connecting, fixedly connected with in the pivot with driven bevel gear meshed's initiative bevel gear.
3. A casting crucible as claimed in claim 2, coated and cleaned on the inner surface, characterized in that: the smearing device also comprises an up-and-down through metal liquid outlet which is arranged on the inner wall of the upper side of the working cavity, the inner wall of the upper side of the working cavity is fixedly connected with a liquid lifting channel, an up-and-down through liquid lifting cavity is arranged in the liquid lifting channel, the inner wall of the upper side of the working cavity is rotatably connected with a spline main hollow shaft which is connected with the liquid lifting channel in a sliding way and is connected with the reset wheel shaft through a belt pulley, a driven hollow shaft is connected on the spline main hollow shaft, a rocker connecting rod is abutted against the end surface of the driven hollow shaft, which is far away from the side of the rotating center, the upper end surface of the working cavity is fixedly connected with a transmission shaft fixed rod which is arranged on the right side of the belt, a transmission shaft is rotatably connected on the transmission shaft fixed rod, a turntable, the driven hollow shaft is far away from a fixed connecting rod on the end face of the side of the rotation center, and the transmission shaft fixed rod is far away from a butt-joint block fixedly connected with the end face of the side of the rotation center and abutted against the circumferential inner wall of the working cavity.
4. A casting crucible as claimed in claim 3, coated and cleaned on the inner surface, characterized in that: the power device comprises a motor fixedly connected with the upper end face of the working box, a main shaft is arranged on the right end face of the motor, a main belt wheel is fixedly connected onto the main shaft, a rotating shaft is fixedly connected with the lower side of the main belt wheel and located on a driven belt wheel between the rotating shaft fixing rods, the main belt wheel is connected with the driven belt wheel through a belt, a rotating shaft is fixedly connected with a main sheave on the right side of the rotating shaft fixing rods, and a transmission shaft is fixedly connected with the main sheave which is meshed with the main sheave and located on the left side of the transmission shaft fixing rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010784551.7A CN111842843A (en) | 2020-08-06 | 2020-08-06 | Casting crucible with inner surface coated and cleaned |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010784551.7A CN111842843A (en) | 2020-08-06 | 2020-08-06 | Casting crucible with inner surface coated and cleaned |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111842843A true CN111842843A (en) | 2020-10-30 |
Family
ID=72971550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010784551.7A Withdrawn CN111842843A (en) | 2020-08-06 | 2020-08-06 | Casting crucible with inner surface coated and cleaned |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111842843A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290232A (en) * | 2021-05-25 | 2021-08-24 | 哈尔滨工业大学 | Reverse gravity filling forming method for large-size complex amorphous alloy component |
-
2020
- 2020-08-06 CN CN202010784551.7A patent/CN111842843A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290232A (en) * | 2021-05-25 | 2021-08-24 | 哈尔滨工业大学 | Reverse gravity filling forming method for large-size complex amorphous alloy component |
| CN113290232B (en) * | 2021-05-25 | 2022-06-14 | 哈尔滨工业大学 | Reverse gravity filling forming method for large-size complex amorphous alloy component |
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Application publication date: 20201030 |
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