CN113500165A - Method for producing impeller blade mould by using gypsum matrix - Google Patents
Method for producing impeller blade mould by using gypsum matrix Download PDFInfo
- Publication number
- CN113500165A CN113500165A CN202110786997.8A CN202110786997A CN113500165A CN 113500165 A CN113500165 A CN 113500165A CN 202110786997 A CN202110786997 A CN 202110786997A CN 113500165 A CN113500165 A CN 113500165A
- Authority
- CN
- China
- Prior art keywords
- blade
- gypsum
- casting
- mother
- female
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 41
- 239000010440 gypsum Substances 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 239000011159 matrix material Substances 0.000 title claims abstract description 21
- 239000004576 sand Substances 0.000 claims abstract description 22
- 238000005266 casting Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 239000011521 glass Substances 0.000 claims abstract description 10
- 238000000465 moulding Methods 0.000 claims abstract description 9
- 239000004519 grease Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000005498 polishing Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 238000000227 grinding Methods 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims abstract description 5
- 238000003723 Smelting Methods 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 238000004018 waxing Methods 0.000 claims abstract description 4
- 235000011615 Pinus koraiensis Nutrition 0.000 claims description 3
- 240000007263 Pinus koraiensis Species 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 230000007547 defect Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a method for producing an impeller blade mould by using a gypsum matrix, which comprises the following steps: manufacturing a female blade, and waxing or smearing grease liquid on the surface of the female blade; adjusting the mould taking angle of the mother blade coated with the grease liquid, and placing the mother blade on a glass plate; mixing gypsum with water, and filling the mixed gypsum slurry into the concave surface of the female blade; mixing casting red sand, performing simple burr cleaning on a gypsum tire mold, coating a release agent, and starting a molding process; leaning the female blade on a gypsum matrix, burying and casting red sand to make a lower box, turning over the box and taking out the gypsum matrix and arranging a casting head, burying and casting the red sand to make an upper box, inserting a plurality of air holes, separating boxes and taking the female blade, and closing the boxes to wait for smelting and pouring; and cleaning and polishing the cast blade blank, and finely grinding by using a polishing machine. The process method provided by the invention is convenient to operate, greatly shortens the production period, reduces the production cost, and can ensure that the blade reaches the performance index of the product.
Description
Technical Field
The invention belongs to the field of casting molds, and particularly relates to a method for producing an impeller blade mold by using a gypsum matrix.
Background
Because the traditional impeller blade casting mode adopts a wet sand burying process for molding, poor air permeability can directly cause the defect of air holes of a blade casting; the blade model is a wooden three-dimensional twisted structure, so that the phenomenon that the mould can not be repaired due to unreasonable mould taking angle and sand collision and falling can be easily caused; the thickness of the blade model is generally 2-8 mm, the blade model is light and thin and easy to deform, and the blade model can be distorted and bent in the molding process, so that the sizes of the subsequently cast blades are different, the thicknesses of the blades are not uniform, and the smoothness of the blades is rough, so that the pump efficiency (flow and lift) cannot be achieved when the blades are used in the later period, and the defects of cavitation and the like are easily caused. The most common blade die manufacturing method at present is direct numerical control machining aluminum plate manufacturing, although the method is accurate and standard in product manufacturing, the processing cost is high, the production period is long, the cost is greatly increased, and the production plan arrangement is influenced.
Disclosure of Invention
The invention provides a method for producing an impeller blade mould by using a gypsum matrix, which is convenient to operate and reduces the production cost, and the blade mould manufactured by the new method is convenient to repair, avoids deformation, reduces defects, improves the finish degree, ensures that the gypsum matrix and a female blade can reach the degree of tight threaded joint, ensures the consistency of multiple pieces produced by the same mould, ensures that the cast impeller reaches the design efficiency, improves the product quality and meets the use requirement of the whole pump.
The technical scheme of the invention is realized as follows: a method for producing an impeller blade mold from a gypsum matrix, comprising the steps of:
(1) manufacturing a mother blade meeting the requirement according to the drawing requirement of an impeller mold, wherein the mother blade is made of Korean pine wood, and waxing or smearing grease liquid on the surface of the mother blade;
(2) adjusting the mould taking angle of the mother blade coated with the grease liquid, and placing the mother blade on a glass plate;
(3) mixing gypsum and water according to the ratio of 5: 3, filling the mixed gypsum slurry into the concave surface of the female blade, slightly shaking the glass plate after the gypsum is hardened, taking the gypsum matrix off the glass plate, separating the gypsum matrix from the female blade, and standing for ten minutes to ensure the hardening strength and no deformation;
(4) mixing casting red sand: mixing red sand and water according to the weight ratio of 50: 1, ensuring that the wet-pressing strength of the sand mold reaches 0.05MPa, after the mixing is finished, simply deburring the gypsum mold, coating a release agent, and starting a molding process;
(5) a molding process: leaning the female blade on a gypsum matrix, burying and casting red sand to make a lower box, turning over the box and taking out the gypsum matrix and arranging a casting head, burying and casting the red sand to make an upper box, inserting a plurality of air holes, separating boxes and taking the female blade, and closing the boxes to wait for smelting and pouring;
(6) and cleaning and polishing the cast blade blank, and finely grinding by using a polishing machine to obtain the cast impeller blade mold meeting the design requirement.
The invention has the beneficial effects that: the process method of the invention has convenient operation, utilizes the characteristics of short gypsum solidification time, good stability and low price to manufacture the blade mould base, and plays the excellent delicate feeling and air permeability of the casting red sand by matching with the casting red sand, so that the blade mould is exquisite and smooth in finish. Through grinding and development, the standard degree of the blade die is only second to that of a blade die manufactured in a mode of numerical control machining of an aluminum plate, the production period is greatly shortened, the production cost is reduced, and the blade can be guaranteed to reach the performance index of a product.
Detailed Description
For a better understanding and implementation, a method for producing a mold for impeller blades of the gypsum tire type is described in detail below, comprising the following steps: (1) manufacturing a mother blade meeting the requirement according to the drawing requirement of an impeller mold, wherein the mother blade is made of Korean pine wood, waxing or smearing grease liquid on the surface of the mother blade is carried out, and shelling and separation are carried out on the mother blade and later gypsum slurry conveniently;
(2) the mother blade coated with the grease liquid is adjusted to an angle which is easy to take a mould, and is placed on a glass plate with a proper size for the purpose of better separating the mother blade from the solidified gypsum;
(3) mixing gypsum and water according to the proportion of 5 to 3, filling the mixed gypsum slurry into the concave surface of the female blade, slightly shaking the glass plate after the gypsum is hardened, taking down the gypsum matrix from the glass plate, and standing for ten minutes to ensure the hardening strength and no deformation;
(4) in the process of waiting for gypsum to harden, casting red sand can be mixed, and the red sand and water are mixed according to the weight ratio of 50: 1, ensuring that the wet-pressing strength of the sand mold reaches 0.05MPa, after the mixing is finished, simply deburring the gypsum mold, coating a release agent, and starting a molding process;
(5) a molding process: leaning the female blade on a gypsum matrix, burying and casting red sand to make a lower box, turning over the box and taking out the gypsum matrix and arranging a casting head, burying and casting the red sand to make an upper box, inserting a plurality of air holes, separating boxes and taking the female blade, and closing the boxes to wait for smelting and pouring;
(6) and cleaning and polishing the cast blade blank, and finely grinding by using a polishing machine to obtain the cast impeller blade mold meeting the design requirement.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (1)
1. A method for producing an impeller blade mould by using a gypsum matrix type is characterized by comprising the following steps:
(1) manufacturing a mother blade meeting the requirement according to the drawing requirement of an impeller mold, wherein the mother blade is made of Korean pine wood, and waxing or smearing grease liquid on the surface of the mother blade;
(2) adjusting the mould taking angle of the mother blade coated with the grease liquid, and placing the mother blade on a glass plate;
(3) mixing gypsum and water according to the ratio of 5: 3, filling the mixed gypsum slurry into the concave surface of the female blade, slightly shaking the glass plate after the gypsum is hardened, taking the gypsum matrix off the glass plate, separating the gypsum matrix from the female blade, and standing for ten minutes to ensure the hardening strength and no deformation;
(4) mixing casting red sand: mixing red sand and water according to the weight ratio of 50: 1, ensuring that the wet-pressing strength of the sand mold reaches 0.05MPa, after the mixing is finished, simply deburring the gypsum mold, coating a release agent, and starting a molding process;
(5) a molding process: leaning the female blade on a gypsum matrix, burying and casting red sand to make a lower box, turning over the box and taking out the gypsum matrix and arranging a casting head, burying and casting the red sand to make an upper box, inserting a plurality of air holes, separating boxes and taking the female blade, and closing the boxes to wait for smelting and pouring;
(6) and cleaning and polishing the cast blade blank, and finely grinding by using a polishing machine to obtain the cast impeller blade mold meeting the design requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110786997.8A CN113500165A (en) | 2021-07-13 | 2021-07-13 | Method for producing impeller blade mould by using gypsum matrix |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110786997.8A CN113500165A (en) | 2021-07-13 | 2021-07-13 | Method for producing impeller blade mould by using gypsum matrix |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113500165A true CN113500165A (en) | 2021-10-15 |
Family
ID=78012843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110786997.8A Pending CN113500165A (en) | 2021-07-13 | 2021-07-13 | Method for producing impeller blade mould by using gypsum matrix |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113500165A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101386056A (en) * | 2008-10-07 | 2009-03-18 | 大连船用推进器有限公司 | Tire retreading casting molding method |
| CN103406486A (en) * | 2013-08-09 | 2013-11-27 | 三峡大学 | Casting sand for casting and moulding piano iron plates and preparation method thereof |
| CN106607559A (en) * | 2015-10-23 | 2017-05-03 | 共享铸钢有限公司 | Sand-mold molding method for water turbine blade |
-
2021
- 2021-07-13 CN CN202110786997.8A patent/CN113500165A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101386056A (en) * | 2008-10-07 | 2009-03-18 | 大连船用推进器有限公司 | Tire retreading casting molding method |
| CN103406486A (en) * | 2013-08-09 | 2013-11-27 | 三峡大学 | Casting sand for casting and moulding piano iron plates and preparation method thereof |
| CN106607559A (en) * | 2015-10-23 | 2017-05-03 | 共享铸钢有限公司 | Sand-mold molding method for water turbine blade |
Non-Patent Citations (4)
| Title |
|---|
| 刘世平等: "《工程训练（制造技术实习部分）》", 30 September 2008, 华中科技大学出版社 * |
| 原昌笃: "金属模铸造螺旋绞刀的研制与应用", 《砖瓦》 * |
| 王顺亭等: "《树脂基复合材料》", 30 June 1997, 中国建材工业出版社 * |
| 郑智受: "《锌基合金冲压模具》", 31 March 1985, 中国农业机械出版社 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211015 |