CN112496257A - Preparation method of precoated sand - Google Patents
Preparation method of precoated sand Download PDFInfo
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- CN112496257A CN112496257A CN202011375561.1A CN202011375561A CN112496257A CN 112496257 A CN112496257 A CN 112496257A CN 202011375561 A CN202011375561 A CN 202011375561A CN 112496257 A CN112496257 A CN 112496257A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
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- Mechanical Engineering (AREA)
- Soil Working Implements (AREA)
Abstract
The invention relates to a precoated sand preparation method, which uses a soaking and extruding device, wherein the soaking and extruding device comprises a base, soaking bins, a rotating device, a sliding device and an extruding device; the driving motor is started, the sliding device is synchronously started, the movable plate is matched with the central rotating shaft, and when the operation bin is shifted, the movable plate moves backwards to avoid blocking the movement of the operation bin; the holes on the second pore plate are overlapped with the holes on the first pore plate through the adjusting unit, so that the adjustment of the holes during extrusion shakeout is realized.
Description
Technical Field
The invention relates to the technical field of precoated sand preparation, in particular to a preparation method of precoated sand.
Background
The precoated sand is molding sand or core sand with a layer of solid resin film coated on the surface of sand before molding, and has two coating processes of a cold method and a hot method: dissolving the resin with ethanol by a cold method, adding urotropine in the sand mixing process to coat the urotropine and the sand on the surface of sand grains, and volatilizing the ethanol to obtain precoated sand; preheating sand to a certain temperature by a hot method, adding resin to melt the sand, stirring the sand to coat the surface of the sand with the resin, adding a urotropine aqueous solution and a lubricant, cooling, crushing and screening the mixture to obtain precoated sand for steel castings and iron castings, and soaking the precoated sand by pure urotropine and other additives according to a certain proportion when the precoated sand is processed by a cold method;
the prior precoated sand preparation device has the following problems:
(1) when a certain amount of precoated sand is prepared, large-batch continuous processing operation cannot be carried out on the precoated sand, and the production and processing efficiency is low;
(2) when continuous soaking operation of the precoated sand is carried out, the soaked precoated sand needs to be extruded, and the extrusion device cannot be effectively matched with the rotating device;
(3) when the soaked precoated sand is extruded and discharged, the hole diameter of the sand discharged by the precoated sand cannot be adjusted, and the production and the processing are difficult.
In order to solve the problems, the invention provides a preparation method of precoated sand.
Disclosure of Invention
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a preparation method of precoated sand uses a soaking and extruding device, the soaking and extruding device comprises a base, a soaking bin, a rotating device, a sliding device and an extruding device, and the preparation method of the precoated sand by using the soaking and extruding device comprises the following steps:
s1, equipment inspection: before starting the soaking and extruding equipment, checking the running of the equipment;
s2, placing sand materials, namely stacking the sand materials with certain weight into an operation bin to facilitate subsequent operation;
s3, sand material soaking: the sand material in the operation bin rotates into the soaking bin to soak the sand material;
s4 sand production adjustment: adjusting the aperture of the sand through an adjusting unit;
s5, extruding the sand material, namely, rolling out the soaked operation bin to extrude and drop the interior of the operation bin;
s6, sand material collection: collecting and centralized processing the soaked sand after extrusion;
the middle part of the upper surface of the base is fixedly provided with a soaking bin, a rotating device fixedly connected with the base is arranged above the soaking bin, the left side of the rotating device is fixedly provided with a sliding device fixedly connected with the base, and an extruding device is arranged below the sliding device;
the rotating device comprises support frames, a central rotating shaft, two support frames, two fixing frames, an operation bin, a fixed plate, driving motors, driving belt wheels, rotating discs, driving blocks and grooved wheels, wherein the support frames are sequentially and fixedly installed on the upper surface of the base from front to back, the central rotating shaft is rotatably installed on one side, which is close to the two support frames, the fixing frames are circumferentially and fixedly installed on the outer side of the central rotating shaft, the four fixing frames are arranged, the operation bin is rotatably installed above the fixing frames, the fixed plate fixedly connected with the base is arranged on the rear side of the rear side support frame, the driving motors are fixedly installed on the rear side of the fixed plate through motor plates, the driving belt wheels are fixedly installed on the output ends of the driving motors, the rotating discs are fixedly installed on the side, which is far away from the driving motors, of the, the grooved wheel is positioned above the rotating disc and is rotationally connected with the rotating disc, the inner cavity of the operation bin is provided with an adjusting unit, the output end of the driving motor drives the rotating disc to rotate by starting the driving motor, and the driving block on the rotating disc drives the grooved wheel to intermittently rotate, so that the displacement among the operation bins is realized, and the sand in the operation bins is soaked;
the sliding device comprises a reciprocating shaft, a driven belt wheel, a belt, a half gear, a moving frame, a sliding groove and a moving plate, the reciprocating shaft is rotatably arranged at the rear side of a fixed plate, the driven belt wheel is fixedly arranged at the outer side of the reciprocating shaft, the belt is arranged between the driven belt wheel and a driving belt wheel, the reciprocating shaft penetrates through the fixed plate and is fixedly provided with the half gear, the moving frame which is slidably connected with the fixed plate is arranged outside the half gear, racks are arranged on the upper side and the lower side of an inner cavity of the moving frame, the half gear is always meshed with one rack when rotating, the sliding groove is arranged on the left side of the upper surface of the base, the moving plate is slidably arranged on the sliding groove, the moving plate is fixedly connected with the right side of the moving frame, the driven belt wheel is rotated through the output end of a driving motor, the driving belt drives, the subsequent extrusion operation of the sand in the operation bin is convenient to realize, and meanwhile, the moving plate moves backwards to avoid blocking the movement of the operation bin;
the extrusion device includes elevator motor, the cam, the carriage, the stopper, extrusion stem and extrusion spring, elevator motor passes through motor board fixed mounting in movable plate one side, the elevator motor output runs through movable plate fixed mounting and has the cam, the cam below is equipped with the carriage with movable plate sliding connection, the carriage below is equipped with the stopper with movable plate fixed connection, carriage below fixed mounting has the extrusion stem, the extrusion stem runs through and slides in the stopper inner chamber, the extrusion stem overcoat is equipped with the extrusion spring, the extrusion spring is located between stopper and the carriage, it rotates to drive the cam through the elevator motor output, the cam rotates and drives the carriage and reciprocates and extrude the whereabouts to the sand in the operation storehouse.
Preferably, the regulating unit includes first orifice plate, the second orifice plate, the wedge, adjust pole and guiding mechanism, first orifice plate fixed mounting is in operation storehouse inner chamber lower part, first orifice plate below is equipped with the second orifice plate, the second orifice plate slides and runs through in operation storehouse left side, second orifice plate left side fixed mounting has the wedge, the wedge top is equipped with the regulation pole with carriage fixed connection, and adjust the pole and be longer than the stripper bar, second orifice plate right side is equipped with guiding mechanism, descend and contradict with the wedge through adjusting the pole, the wedge slides right and drives the second orifice plate and slide at operation storehouse inner chamber, make the hole on the second orifice plate overlap with the hole on the first orifice plate, realize the regulation of hole when extrudeing the knockout.
Preferably, guiding mechanism is including holding groove, telescopic link and guide spring, and the bearing groove is seted up in operation storehouse inner chamber right side wall lower part, and fixed mounting has the telescopic link in holding the groove, and bearing groove one end and second orifice plate fixed connection are kept away from to the telescopic link, and telescopic link outside cover is equipped with guide spring, and when not conflicting the wedge through adjusting the pole, guide spring drives the second orifice plate and slides right, realizes carrying out the part to keeping off to the hole on the first orifice plate, is convenient for carry out moist processing in soaking the storehouse to the sand in the operation storehouse, avoids the sand to fall down simultaneously.
Preferably, operation storehouse right side upper portion is equipped with logical groove, and it is equipped with the apron to lead to the groove and slide, passes logical groove through the apron and slides to operation storehouse inner chamber, makes the apron cover the sand in the operation storehouse, makes the extrusion stem drive the apron decline when descending and extrudes the sand that bonds together after soaking and fall.
Preferably, the operation storehouse front side is opened and is equipped with the rectangular channel, and the mount top is rotated and is installed the joint pole, and the joint pole is kept away from mount one end and is equipped with the fixture block, and the fixture block during operation is located the rectangular channel, carries out the joint through the fixture block on the joint pole to the rectangular channel in the operation storehouse, avoids the extrusion stem to extrude the messenger to the sand in the operation storehouse, and the operation storehouse takes place to rock, makes the better operation of whole device.
Preferably, remove the frame below and be equipped with the collection chamber with base sliding connection, collect the chamber through setting up and make the sand that the operation storehouse bonded can concentrate when extrudeing the whereabouts and collect, unified processing.
The invention has the beneficial effects that:
1. according to the soaking and extruding equipment, the driving motor is started to drive the rotating disc to rotate, the moving disc rotates to drive the grooved wheel to intermittently rotate through the driving block, so that displacement among the operation bins is realized, the operation bins are sequentially rotated into the soaking bins, continuous soaking treatment on sand in the operation bins is further realized, and the working efficiency is improved;
2. according to the soaking and extruding equipment, the driving motor is started, the sliding device is synchronously started, the movable plate is matched with the central rotating shaft, and when the operation bin is transposed, the movable plate moves backwards, so that the operation bin is prevented from being blocked;
3. according to the invention, through the adjusting unit, when sand in the operation bin is extruded and falls, the sliding frame moves downwards to drive the adjusting rod to fall, so that the wedge-shaped block slides rightwards to drive the second orifice plate to slide in the inner cavity of the operation bin, and the orifice on the second orifice plate is overlapped with the orifice on the first orifice plate, thereby achieving the purpose of adjusting the orifice during extrusion and sand falling.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a front perspective view of the infusion extrusion apparatus of the present invention;
FIG. 3 is a rear view of the infusion extrusion apparatus of the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 2 according to the present invention;
FIG. 5 is a schematic front sectional view of an adjusting unit of the present invention;
FIG. 6 is a schematic view of a latch lever of the present invention;
FIG. 7 is a schematic front view of the cover plate of the present invention;
FIG. 8 is a schematic view of the first orifice plate of the present invention overlapping the second orifice plate.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1 to 8, a soaking and extruding device is used, the soaking and extruding device comprises a base 1, a soaking bin 2, a rotating device 3, a sliding device 4 and an extruding device 5, and the method for preparing the precoated sand by using the soaking and extruding device comprises the following steps:
s1, equipment inspection: before starting the soaking and extruding equipment, checking the running of the equipment;
s2, placing sand materials, namely stacking the sand materials with certain weight into an operation bin 34 to facilitate subsequent operation;
s3, sand material soaking: the sand material in the operation bin 34 rotates into the soaking bin to be soaked by resin;
s4 sand production adjustment: the aperture of the sand is adjusted through an adjusting unit 6;
s5, extruding the sand material, namely, rolling out the soaked operation bin to extrude and drop the interior of the operation bin;
s6, sand material collection: collecting and centralized processing the soaked sand after extrusion;
a soaking bin 2 is fixedly installed in the middle of the upper surface of the base 1, a rotating device 3 fixedly connected with the base 1 is arranged above the soaking bin 2, a sliding device 4 fixedly connected with the base 1 is fixedly installed on the left side of the rotating device 3, and an extruding device 5 is arranged below the sliding device 4;
the rotating device 3 comprises a support frame 31, a central rotating shaft 32, a fixing frame 33, an operation bin 34, a fixing plate 35, a driving motor 36, a driving belt wheel 37, a rotating disc 38, a driving block 39 and a grooved wheel 390, wherein the support frames 31 are sequentially and fixedly installed on the upper surface of the base 1 from front to back, the two support frames 31 are provided with two, the central rotating shaft 32 is rotatably installed on one side of the two support frames 31 close to one side, the fixing frame 33 is circumferentially and fixedly installed on the outer side of the central rotating shaft 32, the four fixing frames 33 are provided, the operation bin 34 is rotatably installed above the fixing frame 33, the fixing plate 35 fixedly connected with the base 1 is arranged on the rear side of the rear side support frame 31, the driving motor 36 is fixedly installed on the rear side of the fixing plate 35 through a motor plate, the driving belt wheel 37 is fixedly installed on the output end of the, a grooved pulley 390 is rotatably installed on the rear side of the rear side support frame 31 through a bearing, the grooved pulley 390 is fixedly connected with the central rotating shaft 32, the grooved pulley 390 is located above the rotating disc 38 and is rotatably connected with the rotating disc 38, an adjusting unit 6 is arranged in the inner cavity of the working bin 34, when sand in each working bin 34 is subjected to continuous wetting treatment, the driving motor 36 is started, the output end of the driving motor 36 drives the rotating disc 38 to rotate, when the rotating disc 38 rotates, the driving block 39 on the rotating disc 38 drives the grooved pulley 390 to intermittently rotate, and when the grooved pulley 390 rotates, each fixing frame 33 is respectively driven to rotate through the central rotating shaft 32, so that displacement among the working bins 34 is realized, the working bins 34 are sequentially rotated into the soaking bin 2, and the sand in the working bins 34 is subjected to wetting treatment;
the sliding device 4 comprises a reciprocating shaft 41, a driven pulley 42, a belt 43, a half gear 44, a moving frame 45, a sliding chute 46 and a moving plate 47, the reciprocating shaft 41 is rotatably mounted at the rear side of the fixed plate 35, the driven pulley 42 is fixedly mounted at the outer side of the reciprocating shaft 41, the belt 43 is arranged between the driven pulley 42 and the driving pulley 37, the reciprocating shaft 41 penetrates through the fixed plate 35 and is fixedly mounted with the half gear 44, the moving frame 45 which is slidably connected with the fixed plate 35 is arranged outside the half gear 44, racks are arranged at the upper side and the lower side of the inner cavity of the moving frame 45, the half gear 44 is always meshed with the rack at one side when rotating, the sliding chute 46 is arranged at the left side of the upper surface of the base 1, the moving plate 47 is slidably mounted in the sliding chute 46, the moving plate 47 is fixedly connected with the right side of the moving frame 45, when the output end of, the driven belt wheel 42 drives the driving belt wheel 37 to rotate through the belt 43 when rotating, the driving belt wheel 37 drives the half gear 44 to rotate through the reciprocating shaft 41 when rotating, the half gear 44 rotates to realize the left-and-right movement of the moving frame 45, the moving frame 45 drives the moving plate 47 to slide in the sliding groove 46 when moving, so that the moving plate 47 moves to one side of the operation bin 34, the moving plate 47 is matched with the central rotating shaft 32, the subsequent extrusion operation on sand in the operation bin 34 is conveniently realized, and meanwhile, the moving plate 47 moves backwards to avoid blocking the movement of the operation bin 34;
the extrusion device 5 comprises a lifting motor 51, a cam 52, a sliding frame 53, a limit block 54, an extrusion rod 55 and an extrusion spring 56, wherein the lifting motor 51 is fixedly arranged on one side of the movable plate 47 through a motor plate, the output end of the lifting motor 51 penetrates through the movable plate 47 and is fixedly provided with the cam 52, a sliding frame 53 in sliding connection with the movable plate 47 is arranged below the cam 52, the limit block 54 in fixed connection with the movable plate 47 is arranged below the sliding frame 53, the extrusion rod 55 is fixedly arranged below the sliding frame 53, the extrusion rod 55 penetrates through and slides in the inner cavity of the limit block 54, the extrusion spring 56 is sleeved outside the extrusion rod 55 and is positioned between the limit block 54 and the sliding frame 53, when the extrusion action of the sand in the operation bin 34 is completed, the lifting motor 51 is started, the output end of the lifting motor 51 drives the cam 52 to rotate, the cam 52 rotates to drive, the sand in the working chamber 34 is squeezed and dropped by the lifting and lowering of the squeeze rod 55.
The adjusting unit 6 comprises a first orifice plate 61, a second orifice plate 62, a wedge block 63, an adjusting rod 64 and a guiding mechanism 7, the first orifice plate 61 is fixedly arranged at the lower part of the inner cavity of the operation bin 34, the second orifice plate 62 is arranged below the first orifice plate 61, the second orifice plate 62 slides and penetrates through the left side of the operation bin 34, the wedge block 63 is fixedly arranged at the left side of the second orifice plate 62, the adjusting rod 64 fixedly connected with the sliding frame 53 is arranged above the wedge block 63, the adjusting rod 64 is longer than the extrusion rod 55, the right side of the second orifice plate 62 is provided with a guide mechanism 7, before the sand in the operation cabin 34 is extruded and falls, the sliding frame 53 moves downwards to drive the adjusting rod 64 to descend, the adjusting rod 64 descends to abut against the wedge-shaped block 63, the wedge-shaped block 63 slides rightwards to drive the second pore plate 62 to slide in the inner cavity of the operation cabin 34, so that the holes in the second pore plate 62 are overlapped with the holes in the first pore plate 61, and the adjustment of the holes during extrusion and sand falling is realized.
The rectangular channel is opened to operation storehouse 34 front side, and mount 33 top is rotated and is installed joint pole 91, and joint pole 91 is kept away from mount 33 one end and is equipped with the fixture block, and the fixture block during operation is located the rectangular channel, carries out the joint through the fixture block on the joint pole 91 to the rectangular channel in the operation storehouse 34, avoids the extrusion stem 55 to extrude the messenger to the sand in the operation storehouse 34, and operation storehouse 34 takes place to rock, makes the better operation of whole device.
The lower part of the moving frame 45 is provided with a collecting cavity 10 which is connected with the base 1 in a sliding way, and the sand bonded with the operation cabin 34 can be collected and treated in a centralized way when being extruded and dropped through the collecting cavity 10.
The present invention is not limited to the above-described embodiments, which are described in the specification and illustrated only to illustrate the principle of the present invention, but various changes and modifications may be made within the scope of the present invention as claimed without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a tectorial membrane sand preparation method, it has used a soaking extrusion equipment, should soak extrusion equipment and include base (1), soak storehouse (2), rotating device (3), slider (4), extrusion device (5), its characterized in that: the method for preparing the precoated sand by adopting the soaking and extruding equipment comprises the following steps:
s1, equipment inspection: before starting the soaking and extruding equipment, checking the running of the equipment;
s2, placing sand materials, namely stacking the sand materials with certain weight into an operation bin (34) to facilitate subsequent operation;
s3, sand material soaking: the sand material in the operation bin (34) rotates into the soaking bin to be soaked by resin;
s4 sand production adjustment: the aperture of the sand outlet is adjusted through an adjusting unit (6);
s5, extruding the sand material, namely, rolling out the soaked operation bin to extrude and drop the interior of the operation bin;
s6, sand material collection: collecting and centralized processing the soaked sand after extrusion;
a soaking bin (2) is fixedly installed in the middle of the upper surface of the base (1), a rotating device (3) fixedly connected with the base (1) is arranged above the soaking bin (2), a sliding device (4) fixedly connected with the base (1) is fixedly installed on the left side of the rotating device (3), and an extruding device (5) is arranged below the sliding device (4);
the rotating device (3) comprises support frames (31), a central rotating shaft (32), a fixing frame (33), operation bins (34), fixing plates (35), driving motors (36), driving belt wheels (37), a rotating disc (38), driving blocks (39) and grooved pulleys (390), wherein the support frames (31) are sequentially and fixedly installed on the upper surface of the base (1) from front to back, the number of the support frames (31) is two, the two support frames (31) are close to one side and rotatably installed with the central rotating shaft (32), the fixing frame (33) is fixedly installed on the outer side of the central rotating shaft (32) in the circumferential direction, the number of the fixing frames (33) is four, the operation bins (34) are rotatably installed above the fixing frame (33), the fixing plate (35) fixedly connected with the base (1) is arranged on the rear side of the rear side support frame (31), the driving motors (36) are fixedly installed on the rear side of the fixing plate (, the output end of the driving motor (36) penetrates through the fixing plate (35) and is fixedly provided with a rotating disc (38), one side, far away from the driving motor (36), of the rotating disc (38) is fixedly provided with a driving block (39), the rear side of the rear side supporting frame (31) is rotatably provided with a grooved pulley (390) through a bearing, the grooved pulley (390) is fixedly connected with the central rotating shaft (32), the grooved pulley (390) is positioned above the rotating disc (38) and is rotatably connected with the rotating disc (38), and the inner cavity of the operation bin (34) is provided with an adjusting unit (6);
the sliding device (4) comprises a reciprocating shaft (41), a driven belt wheel (42), a belt (43), a semi-gear (44), a moving frame (45), a sliding groove (46) and a moving plate (47), the reciprocating shaft (41) is rotatably installed on the rear side of the fixed plate (35), a driven belt wheel (42) is fixedly installed on the outer side of the reciprocating shaft (41), a belt (43) is arranged between the driven belt wheel (42) and the driving belt wheel (37), a half gear (44) is fixedly installed on the reciprocating shaft (41) in a penetrating mode through the fixed plate (35), a moving frame (45) in sliding connection with the fixed plate (35) is arranged outside the half gear (44), racks are arranged on the upper side and the lower side of an inner cavity of the moving frame (45), the half gear (44) is always meshed with the rack on one side when rotating, a sliding groove (46) is formed in the left side of the upper surface of the base (1), a moving plate (47) is slidably installed on the sliding groove (46), and the;
extrusion device (5) are including elevator motor (51), cam (52), carriage (53), stopper (54), crushing rod (55) and extrusion spring (56), elevator motor (51) pass through motor board fixed mounting in movable plate (47) one side, elevator motor (51) output runs through movable plate (47) fixed mounting has cam (52), cam (52) below is equipped with carriage (53) with movable plate (47) sliding connection, carriage (53) below is equipped with stopper (54) with movable plate (47) fixed connection, carriage (53) below fixed mounting has crushing rod (55), crushing rod (55) run through and slide in stopper (54) inner chamber, crushing rod (55) overcoat is equipped with extrusion spring (56), extrusion spring (56) are located between stopper (54) and carriage (53).
2. The precoated sand production method according to claim 1, characterized by: adjusting unit (6) include first orifice plate (61), second orifice plate (62), wedge (63), adjust pole (64) and guiding mechanism (7), first orifice plate (61) fixed mounting is in operation storehouse (34) inner chamber lower part, first orifice plate (61) below is equipped with second orifice plate (62), second orifice plate (62) slide and run through in operation storehouse (34) left side, second orifice plate (62) left side fixed mounting has wedge (63), wedge (63) top be equipped with carriage (53) fixed connection's regulation pole (64), and adjust pole (64) and be longer than extrusion stem (55), second orifice plate (62) right side is equipped with guiding mechanism (7).
3. The precoated sand production method according to claim 2, characterized in that: the guiding mechanism (7) comprises a bearing groove (71), a telescopic rod (72) and a guiding spring (73), the bearing groove (71) is arranged on the lower portion of the right side wall of the inner cavity of the operation cabin (34), the telescopic rod (72) is fixedly installed in the bearing groove (71), one end, far away from the bearing groove (71), of the telescopic rod (72) is fixedly connected with the second pore plate (62), and the guiding spring (73) is sleeved on the outer side of the telescopic rod (72).
4. The precoated sand production method according to claim 1, characterized by: a through groove (81) is formed in the upper portion of the right side of the operation bin (34), and a cover plate (82) is arranged on the through groove (81) in a sliding mode.
5. The precoated sand production method according to claim 1, characterized by: a rectangular groove is formed in the front side of the operation bin (34), a clamping rod (91) is rotatably mounted above the fixing frame (33), a clamping block is arranged at one end, away from the fixing frame (33), of the clamping rod (91), and the clamping block is located in the rectangular groove during operation.
6. The precoated sand production method according to claim 1, characterized by: a collecting cavity (10) which is connected with the base (1) in a sliding way is arranged below the moving frame (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011375561.1A CN112496257A (en) | 2020-11-30 | 2020-11-30 | Preparation method of precoated sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011375561.1A CN112496257A (en) | 2020-11-30 | 2020-11-30 | Preparation method of precoated sand |
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| Publication Number | Publication Date |
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| CN112496257A true CN112496257A (en) | 2021-03-16 |
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| CN202011375561.1A Withdrawn CN112496257A (en) | 2020-11-30 | 2020-11-30 | Preparation method of precoated sand |
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| CN104882236A (en) * | 2015-05-01 | 2015-09-02 | 安庆安星电气有限公司 | Protective paint transferring and dip-coating device for winding resistors |
| CN105195667A (en) * | 2015-09-21 | 2015-12-30 | 济南大学 | Preparation method of 3D printing rapid-prototyping precoated sand |
| CN204975235U (en) * | 2015-08-05 | 2016-01-20 | 十堰飞远汽车零部件有限公司 | Disappearance mould coating dip -coating device |
| CN110722651A (en) * | 2019-12-02 | 2020-01-24 | 周俊杰 | Anticorrosion and mothproof treatment method for artificial board blank after forming |
| CN111531121A (en) * | 2020-04-27 | 2020-08-14 | 李昌跃 | Method for treating precoated sand of valve casting cavity manufacturing raw material |
| CN111997326A (en) * | 2020-09-03 | 2020-11-27 | 李媛菲 | Surface wetting device for laying ceramic ground capable of preventing sewage from flowing out |
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2020
- 2020-11-30 CN CN202011375561.1A patent/CN112496257A/en not_active Withdrawn
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|---|---|---|---|---|
| CN104882236A (en) * | 2015-05-01 | 2015-09-02 | 安庆安星电气有限公司 | Protective paint transferring and dip-coating device for winding resistors |
| CN204975235U (en) * | 2015-08-05 | 2016-01-20 | 十堰飞远汽车零部件有限公司 | Disappearance mould coating dip -coating device |
| CN105195667A (en) * | 2015-09-21 | 2015-12-30 | 济南大学 | Preparation method of 3D printing rapid-prototyping precoated sand |
| CN110722651A (en) * | 2019-12-02 | 2020-01-24 | 周俊杰 | Anticorrosion and mothproof treatment method for artificial board blank after forming |
| CN111531121A (en) * | 2020-04-27 | 2020-08-14 | 李昌跃 | Method for treating precoated sand of valve casting cavity manufacturing raw material |
| CN111997326A (en) * | 2020-09-03 | 2020-11-27 | 李媛菲 | Surface wetting device for laying ceramic ground capable of preventing sewage from flowing out |
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| 曾文龙: "《铸造工艺学》", 31 October 1997, 机械工业出版社 * |
| 胡彭生: "《型砂》", 30 April 1980, 上海科学技术出版社 * |
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