CN113814351A - Rapid shell manufacturing method of shell for precision casting - Google Patents
Rapid shell manufacturing method of shell for precision casting Download PDFInfo
- Publication number
- CN113814351A CN113814351A CN202111241793.2A CN202111241793A CN113814351A CN 113814351 A CN113814351 A CN 113814351A CN 202111241793 A CN202111241793 A CN 202111241793A CN 113814351 A CN113814351 A CN 113814351A
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- shell
- quick
- precision casting
- drying
- slurry
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
-
- 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
- B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
- B22C5/0409—Blending, mixing, kneading or stirring; Methods therefor
- B22C5/0472—Parts; Accessories; Controlling; Feeding; Discharging; Proportioning
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Dental Prosthetics (AREA)
Abstract
The invention belongs to the technical field of investment casting, and particularly relates to a quick shell manufacturing method of a shell for precision casting. According to the invention, the quick-drying complexing agent is added into the open type stirrer, and the shell is stirred and sized at the same time, so that the quick-drying complexing agent in the shell is uniformly distributed, the shell making period of the shell is short, and the strength is high. The invention has the following advantages: firstly, the formula of the quick-drying complexing agent has the basic effect of quick-drying and forming of slurry, an open type stirrer is used for stirring all the time during slurry feeding, and the quick-drying complexing agent is uniformly distributed in the slurry; secondly, the open-top agitator can form a slurry polymerization opening which is relatively attached to two sides of wax module trees with different widths and sizes, so that sufficient feeding amount is ensured; thirdly, according to the contour dimension of the wax pattern tree, the rotating push plate unit can be adjusted in a targeted and independent opening and closing angle, the whole adjusting operation is simple and convenient, and the adjusting is not easy to change.
Description
Technical Field
The invention belongs to the technical field of investment casting, and particularly relates to a quick shell manufacturing method of a shell for precision casting.
Background
Precision investment casting requires a relatively short shell-making period for the shell, thereby reducing the problem of collapse during shell formation, which is more important for thin-walled castings such as impellers.
Therefore, the quick-drying complexing agent is generally added into the slurry, but the quick-drying complexing agent continuously sinks in a slurry system in a standing state, so that the content of the quick-drying complexing agent is proper because the upper slurry is just stirred when being used, the problem that the content of the quick-drying complexing agent is low when the middle slurry is used can be solved, and similarly, the problem that the quick-drying complexing agent is excessive when the slurry is used at the end, but the shell-making curing speed is high, but the shell strength is not enough can be solved.
Therefore, in summary, the slurry containing the quick-drying complexing agent needs to be placed in a stirring device and stirred at the same time, so as to ensure that the quick-drying complexing agent can fully play the role, which is not realized by the existing barrel-shaped stirring device.
The patent publication No. CN210448795U, Chinese utility model patent with publication No. 2020.05.05 discloses a mud stirring and air extracting device, which comprises a casing and the like, wherein the lower part of one side of the casing is provided with an inlet pipe, the upper part of the opposite side is provided with a discharge pipe, the stirring device, an upper electrode plate and a lower electrode plate are transversely arranged in the middle of the inside of the casing, and the upper electrode plate and the lower electrode plate are positioned above the stirring device; the stirring device comprises a stirring shaft, stirring blades and a stirring screw are arranged on the stirring shaft, the motor is fixedly arranged on the outer side of the shell and corresponds to the stirring device, and one end of the stirring shaft is fixedly connected with a rotating shaft of the motor through a coupler; and an air exhaust hole is formed in the center of the top of the casing, and the vacuum pump is connected with the air exhaust hole through an air exhaust pipe.
But the mud agitated vessel in this utility model patent, inconvenient getting material operation in its stirring, ejection of compact speed is also invariable moreover, and this point also seems very low efficiency when carrying out big batch wax matrix sizing.
Disclosure of Invention
The invention provides a quick shell manufacturing method for a shell for precision casting, which can ensure that quick-drying complexing agents in the shell are uniformly distributed in a mode of adding the quick-drying complexing agents into an open type stirrer and stirring while sizing, and the shell manufacturing period of the shell is short and the strength is high.
The technical scheme adopted by the invention for solving the problems is as follows: a quick shell manufacturing method for a precision casting shell comprises the steps of adding a quick-drying complexing agent into slurry, wherein the quick-drying complexing agent comprises polyacrylamide, kaolin, bentonite and polyethylene wax, and the slurry containing the quick-drying complexing agent is subjected to wax mold sizing operation in an open type stirrer.
The further preferred technical scheme is as follows: uncovered type mixer includes circular agitator, sets up stirring post on the circular agitator bottom plate sets up the spliced pole of stirring post upper portion position department sets up on the spliced pole and inside be used for inserting the U type stirring frame of wax module tree to and set up on two stands of U type stirring frame and the bottom diaphragm and through rotatory mode in order to be used for toward the rotatory push pedal unit of propelling movement mud material on the wax module tree.
The further preferred technical scheme is as follows: the rotary push plate unit comprises a mounting ring arranged on the U-shaped stirring frame, a pushing plate arranged on the outer ring surface of the mounting ring, a threaded hole arranged on the mounting ring, and a fastening bolt arranged on the threaded hole.
The further preferred technical scheme is as follows: the rotary push plate unit further comprises a fixing ring sleeved on the exposed rod body of the fastening bolt, and a jacking rod body which is arranged on the outer ring surface of the fixing ring and used for reducing the width of a slurry polymerization opening formed by the push plates on two sides in an inward pushing mode.
The further preferred technical scheme is as follows: the rotary push plate unit further comprises a tail end annular groove and a head end annular groove which are arranged on the jacking rod body, and a movable elastic ring which is arranged on the head end annular groove and is used for jacking the push plate.
The further preferred technical scheme is as follows: the rotary push plate unit also comprises a tail end annular groove and a pull rope arranged between the fixed elastic ring and the movable elastic ring.
The further preferred technical scheme is as follows: the movable elastic ring is arranged on the pushing plates in a clamping mode and is pulled back to increase the width of a mud slurry polymerization opening formed by the pushing plates on two sides.
The further preferred technical scheme is as follows: the pushing plate is also provided with a circular hole for clamping the movable elastic ring and a slideway.
The further preferred technical scheme is as follows: and 2-3U-shaped stirring frames are arranged on the stirring column.
The further preferred technical scheme is as follows: the number of the pushing plates is 10-24.
The invention has the following advantages: firstly, the formula of the quick-drying complexing agent has the basic effect of quick-drying and forming of slurry, an open type stirrer is used for stirring all the time during slurry feeding, and the quick-drying complexing agent is uniformly distributed in the slurry; secondly, the open-top agitator can form a slurry polymerization opening which is relatively attached to two sides of wax module trees with different widths and sizes, so that sufficient feeding amount is ensured; thirdly, according to the contour size of the wax pattern tree, the rotating push plate unit can be subjected to targeted and independent opening and closing angle adjustment, the whole adjustment operation is simple and convenient, and the adjustment is not easy to change; fourthly, the width of a polymerization opening between the paired pushing plates at the two sides is flexible and adjustable, and the pushing plates can be folded and unfolded; fifthly, the whole open type stirrer is high in efficiency when being used for sizing the wax mould group tree, good in safety and not easy to collide with the wax mould.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the position structure of the rotary push plate unit in the present invention.
Fig. 3 is a schematic diagram of the position structure of the movable elastic ring and the fixed elastic ring in the invention.
Fig. 4 is a schematic diagram of the position structure of the circular hole in the present invention.
In the drawings, the reference numerals denote the following components: the stirring device comprises a circular stirring barrel 1, a stirring column 2, a connecting column 3, a U-shaped stirring frame 4, a rotary push plate unit 5, a mounting ring 501, a pushing plate 502, a threaded hole 503, a fastening bolt 504, a fixing ring 505, a jacking rod body 506, a tail end annular groove 507, a head end annular groove 508, a movable elastic ring 509, a fixing elastic ring 510, a pull rope 511, a circular hole 512 and a slide 513.
Detailed Description
The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.
Example (b): as shown in the attached figures 1-4, the quick shell manufacturing method for the shells for precision casting comprises the steps of adding a quick-drying complexing agent into slurry, wherein the quick-drying complexing agent comprises polyacrylamide, kaolin, bentonite and polyethylene wax, and the slurry containing the quick-drying complexing agent is subjected to wax pattern sizing operation in an open type stirrer.
Open-mouth type mixer includes circular agitator 1, sets up stirring post 2 on the 1 bottom plate of circular agitator sets up spliced pole 3 of 2 upper portions positions departments of stirring post sets up on the spliced pole 3 and inside be used for inserting the U type stirring frame 4 of wax module tree an, and set up on two stands of U type stirring frame 4 and the bottom diaphragm and through rotatory mode in order to be used for the rotatory push pedal unit 5 of propelling movement mud material toward wax module tree a.
In this embodiment, when the U-shaped stirring frame 4 rotates, a "safe area" for placing the wax module tree a is formed inside the U-shaped stirring frame 4, and the U-shaped stirring frame 4 and the rotary push plate unit 5 always stir the slurry with the quick-drying complexing agent, so as to ensure that the whole sizing operation is uniform and reliable.
More importantly, the rotary push plate unit 5 can form a slurry polymerization opening which is attached to the outer contour of the wax pattern tree a, so that sufficient slurry can be attached to the wax pattern.
The rotary push plate unit 5 comprises a mounting ring 501 arranged on the U-shaped stirring frame 4, a push plate 502 arranged on the outer annular surface of the mounting ring 501, a threaded hole 503 arranged on the mounting ring 501, and a fastening bolt 504 arranged on the threaded hole 503.
In this embodiment, the pushing plates 502 have an adjustable rotation angle, that is, when facing a relatively small wax mold, two pushing plates 502 can be closed in a rotating manner, so as to ensure that more slurry adheres to the wax mold, because a smaller slurry converging port can pass through faster slurry.
The rotary push plate unit 5 further includes a fixing ring 505 sleeved on the exposed rod body of the fastening bolt 504, and a jacking rod body 506 disposed on the outer circumferential surface of the fixing ring 505 and used for narrowing the width of the slurry aggregation port formed by the push plates 502 on both sides in an inward pushing manner.
In this embodiment, the lifting rod 506 is used to lift and close the slurry converging opening formed by the two pushing plates 502, so as to ensure that the slurry passing through the wax pattern is a "live" slurry stirred up when facing a smaller wax pattern.
The rotary push plate unit 5 further comprises a tail end annular groove 507 and a head end annular groove 508 which are arranged on the jacking rod body 506, and a movable elastic ring 509 which is arranged on the head end annular groove 508 and is used for propping against the push plate 502.
In this embodiment, the movable elastic ring 509 is located at the head and made of rubber, so as to ensure stable jacking of the pushing plate 502.
The rotary push plate unit 5 further includes a fixed elastic ring 510 disposed on the tail end annular groove 507, and a pull rope 511 disposed between the fixed elastic ring 510 and the movable elastic ring 509.
The movable elastic ring 509 is arranged on the pushing plate 502 by clamping and pulling back to increase the width of the slurry aggregation opening formed by the pushing plate 502 on both sides.
The pushing plate 502 is further provided with a circular hole 512 for engaging with the movable elastic ring 509, and a slide 513.
In this embodiment, the movable elastic ring 509 is snapped into the circular hole 512, and the pulling rope 511 can pull the pushing plates 502 back, so that the width of the slurry aggregate opening formed by the pair of pushing plates 502 can be enlarged.
And 2-3U-shaped stirring frames 4 are arranged on the stirring column 2. The number of the pushing plates 502 is 10-24.
Finally, the relative opening width of the rotary push plate unit 5 in the embodiment is flexibly adjustable, so that the quick-drying complexing agent contained in the sizing is ensured to be sufficient and appropriate by flowing sizing agent on the wax mold.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various modifications can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. These are non-inventive modifications, which are intended to be protected by patent laws within the scope of the claims appended hereto.
Claims (10)
1. A quick shell manufacturing method for shells for precision casting comprises the steps of adding a quick-drying complexing agent into slurry, and is characterized in that: the quick-drying complexing agent comprises polyacrylamide, kaolin, bentonite and polyethylene wax, and slurry containing the quick-drying complexing agent is subjected to wax mold sizing operation in an open type stirrer.
2. The rapid shell-making method of a mold shell for precision casting according to claim 1, wherein: uncovered type mixer includes circular agitator (1), sets up stirring post (2) on circular agitator (1) bottom plate sets up spliced pole (3) of stirring post (2) upper portion position department set up on spliced pole (3) and inside be used for inserting U type stirring frame (4) of wax module tree (a), and set up and be in on two stands of U type stirring frame (4) and the bottom diaphragm and through rotatory mode in order to be used for propelling movement mud material's rotatory push pedal unit (5) on toward wax module tree (a).
3. The method for rapidly manufacturing the shell for the precision casting according to claim 2, wherein the method comprises the following steps: the rotary push plate unit (5) comprises a mounting ring (501) arranged on the U-shaped stirring frame (4), a pushing plate (502) arranged on the outer ring surface of the mounting ring (501), a threaded hole (503) arranged on the mounting ring (501), and a fastening bolt (504) arranged on the threaded hole (503).
4. The method for rapidly manufacturing the shell for the precision casting according to claim 3, wherein the method comprises the following steps: the rotary push plate unit (5) further comprises a fixing ring (505) sleeved on the exposed rod body of the fastening bolt (504), and a jacking rod body (506) which is arranged on the outer ring surface of the fixing ring (505) and used for reducing the width of a slurry polymerization opening formed by the push plates (502) on two sides in an inward pushing mode.
5. The method for rapidly manufacturing the shell for the precision casting according to claim 4, wherein the method comprises the following steps: the rotary push plate unit (5) further comprises a tail end annular groove (507) and a head end annular groove (508) which are arranged on the jacking rod body (506), and a movable elastic ring (509) which is arranged on the head end annular groove (508) and is used for propping against the push plate (502).
6. The method for rapidly manufacturing the shell for the precision casting according to claim 5, wherein the method comprises the following steps: the rotary push plate unit (5) further comprises a fixed elastic ring (510) arranged on the tail end annular groove (507), and a pull rope (511) arranged between the fixed elastic ring (510) and the movable elastic ring (509).
7. The method for rapidly manufacturing the shell for the precision casting according to claim 6, wherein the method comprises the following steps: the movable elastic ring (509) is arranged on the pushing plate (502) in a clamping manner and is pulled back to increase the width of a mud slurry polymerization opening formed by the pushing plate (502) on two sides.
8. The method for rapidly manufacturing the shell for the precision casting according to claim 6, wherein the method comprises the following steps: the pushing plate (502) is also provided with a circular hole (512) for clamping the movable elastic ring (509) and a slideway (513).
9. The method for rapidly manufacturing the shell for the precision casting according to claim 2, wherein the method comprises the following steps: and 2-3U-shaped stirring frames (4) are arranged on the stirring column (2).
10. The method for rapidly manufacturing the shell for the precision casting according to claim 3, wherein the method comprises the following steps: the number of the push plates (502) is 10-24.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111241793.2A CN113814351B (en) | 2021-10-25 | 2021-10-25 | Rapid shell manufacturing method of shell for precision casting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111241793.2A CN113814351B (en) | 2021-10-25 | 2021-10-25 | Rapid shell manufacturing method of shell for precision casting |
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| CN113814351A true CN113814351A (en) | 2021-12-21 |
| CN113814351B CN113814351B (en) | 2023-07-04 |
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| CN210937001U (en) * | 2019-11-06 | 2020-07-07 | 山东森宇精工科技有限公司 | Slurry dipping device of precision casting shell manufacturing production line |
| CN210969419U (en) * | 2019-07-31 | 2020-07-10 | 崇仁县鑫鼎建材有限公司 | Concrete mixing loading attachment |
| CN211070076U (en) * | 2019-09-24 | 2020-07-24 | 湖州展望药业有限公司 | A novel reation kettle for hydroxypropyl cellulose etherification |
| CN213791454U (en) * | 2020-11-13 | 2021-07-27 | 大连天力调味食品有限公司 | Automatic change horseradish material agitating unit |
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2021
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| CN113814351B (en) | 2023-07-04 |
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