CN113996761A - Manufacturing process of mixing core of static mixer - Google Patents
Manufacturing process of mixing core of static mixer Download PDFInfo
- Publication number
- CN113996761A CN113996761A CN202111431302.0A CN202111431302A CN113996761A CN 113996761 A CN113996761 A CN 113996761A CN 202111431302 A CN202111431302 A CN 202111431302A CN 113996761 A CN113996761 A CN 113996761A
- Authority
- CN
- China
- Prior art keywords
- sand
- mixed core
- core
- shell
- static mixer
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 230000003068 static effect Effects 0.000 title claims abstract description 20
- 239000004576 sand Substances 0.000 claims abstract description 50
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000002253 acid Substances 0.000 claims abstract description 5
- 238000003754 machining Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 238000005266 casting Methods 0.000 claims abstract description 4
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 238000004381 surface treatment Methods 0.000 claims abstract description 4
- 238000009966 trimming Methods 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 3
- 230000008569 process Effects 0.000 claims description 10
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 3
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000003466 welding Methods 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
- B22C9/04—Use of lost patterns
-
- 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
- B22C9/043—Removing the consumable pattern
-
- 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)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a manufacturing process of a mixing core of a static mixer, which comprises the following steps of S1, manufacturing a wax mould: splicing the wax plate elements into a mixed core model; s2, shell making: immersing the obtained mixed core model into refractory mortar to coat refractory sand outside the mixed core model to form a sand mould, drying and forming the obtained sand mould, and dewaxing to form a sand shell; s3, casting molding: pouring molten steel into the obtained sand shell, and standing for 30-50 minutes to wait for forming a mixed core; s4, sand removal: immersing the mixed core with the sand shell obtained in the step S3 into acid liquor to enable the sand shell to fall off; s5, subsequent processing: and carrying out machining, trimming and surface treatment on the obtained mixed core to obtain a mixed core finished product. Compared with the traditional mixed core manufacturing process, the mixed core manufacturing process has the advantages that the production procedures are reduced, the production cost of the product is reduced, the product has higher structural strength, and the service life is long.
Description
Technical Field
The invention relates to the technical field of fluid mixing, in particular to a manufacturing process of a mixing core of a static mixer.
Background
The static mixer is a high-efficiency mixing device without moving parts, and the basic working mechanism of the static mixer is to change the flowing state of fluid in a pipe by using a mixing unit body fixed in the pipe so as to achieve the purposes of good dispersion and full mixing of different fluids. What is referred to as a static mixer means that there are no moving parts in the pipe, only static elements. The working principle of static mixers is to cause the fluid flowing in a pipeline to impact a mixing core with various types of plate elements, to increase the velocity gradient of the laminar flow motion of the fluid or to create turbulence, which is "split-position shift-rejoin". In turbulent flow, the fluid can generate violent vortex in the cross section direction, and strong shearing force acts on the fluid to further divide and mix the fluid, and finally the fluid is mixed to form the required emulsion. In prior art, static mixer's mixed core generally adopts the wire-electrode cutting mode to process board spare, then with board spare weld forming, carries out machining again, and production processes is various, and production efficiency is lower, leads to manufacturing cost height, and the welding department structural strength of product is not enough moreover, and life is shorter.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a manufacturing process of a mixing core of a static mixer, which can reduce production procedures and production cost, and enables the product to have higher structural strength and long service life.
In order to solve the above technical problems, the process for manufacturing the mixing core of the static mixer of the present invention comprises the following steps,
s1, manufacturing a wax mold: splicing the wax plate elements into a mixed core model;
s2, shell making: immersing the obtained mixed core model into refractory mortar to coat refractory sand outside the mixed core model to form a sand mould, drying and forming the obtained sand mould, and dewaxing to form a sand shell;
s3, casting molding: pouring molten steel into the obtained sand shell, and standing for 30-50 minutes to wait for forming a mixed core;
s4, sand removal: immersing the mixed core with the sand shell obtained in the step S3 into acid liquor to enable the sand shell to fall off;
s5, subsequent processing: and carrying out machining, trimming and surface treatment on the obtained mixed core to obtain a mixed core finished product.
In the step S2, the mixed core model is coated with 4-5 layers of refractory sand, wherein each layer of refractory sand is coated and then dried for 24 hours, so that the sand model of the mixed core has a multilayer structure, better sealing performance and more stable structure.
In the dewaxing process in the step S2, the sand mold after being dried and formed is placed into a dewaxing kettle, high-temperature steam with 0.8 atm is input into the dewaxing kettle, the dewaxing time is 40-50 minutes, automatic dewaxing can be realized, the production efficiency is high, and the production cost can be reduced.
And (4) roasting and heating the sand shell obtained in the step (S2) for 20-30 minutes to remove residual moisture in the sand shell, so that the sand shell has certain air permeability.
The refractory sand is zirconium oxide and has good high-temperature resistance.
And in the step S4, the acid solution is a nitric acid solution, so that the sand shell can be dissolved and fall off.
The invention has the beneficial effects that: compared with the traditional mixed core manufacturing process, the mixed core manufacturing process of the static mixer has the advantages that the production procedures are reduced, the production cost of the product is reduced, the product has higher structural strength, and the service life is long.
Detailed Description
The invention relates to a manufacturing process of a mixing core of a static mixer, which comprises the following steps,
s1, manufacturing a wax mold: splicing the wax plate elements into a mixed core model;
s2, shell making: immersing the obtained mixed core model into refractory mortar with zirconium oxide as a main component to coat refractory sand outside the mixed core model to form a sand mould, wherein 4-5 layers of refractory sand are required to coat the outside of the mixed core model, and each layer of refractory sand is required to be dried for 24 hours, then the obtained sand mould is dried, formed and dewaxed to form a sand shell, and the dewaxing process is to put the dried and formed sand mould into a dewaxing kettle, 0.8-atmospheric high-temperature steam is input into the dewaxing kettle, and the dewaxing time is 40-50 minutes; roasting and heating the sand shell obtained after dewaxing for 20-30 minutes;
s3, casting molding: pouring molten steel into the obtained sand shell, and standing for 30-50 minutes to wait for forming a mixed core;
s4, sand removal: immersing the mixed core with the sand shell obtained in the step S3 into a nitric acid solution to enable the sand shell to fall off;
s5, subsequent processing: and carrying out machining, trimming and surface treatment on the obtained mixed core to obtain a mixed core finished product.
The above description is only a preferred embodiment of the present invention, and the technical solutions that achieve the objects of the present invention by basically the same means are all within the protection scope of the present invention.
Claims (6)
1. A manufacturing process of a mixing core of a static mixer is characterized in that: comprises the following steps of (a) carrying out,
s1, manufacturing a wax mold: splicing the wax plate elements into a mixed core model;
s2, shell making: immersing the obtained mixed core model into refractory mortar to coat refractory sand outside the mixed core model to form a sand mould, drying and forming the obtained sand mould, and dewaxing to form a sand shell;
s3, casting molding: pouring molten steel into the obtained sand shell, and standing for 30-50 minutes to wait for forming a mixed core;
s4, sand removal: immersing the mixed core with the sand shell obtained in the step S3 into acid liquor to enable the sand shell to fall off;
s5, subsequent processing: and carrying out machining, trimming and surface treatment on the obtained mixed core to obtain a mixed core finished product.
2. The process for manufacturing a mixing core for a static mixer according to claim 1, characterized in that: in the step S2, the mixed core mold is coated with 4-5 layers of refractory sand, wherein each layer of refractory sand is dried for 24 hours.
3. The process for manufacturing a mixing core for a static mixer according to claim 1, characterized in that: in the dewaxing process in the step S2, the sand mold after being dried and formed is placed into a dewaxing kettle, and high-temperature steam with 0.8 atm is input into the dewaxing kettle, and the dewaxing time is 40-50 minutes.
4. The process for manufacturing a mixing core for a static mixer according to claim 1, characterized in that: and the sand shell obtained in the step S2 needs to be roasted and heated for 20-30 minutes.
5. The process for manufacturing a mixing core for a static mixer according to claim 1, characterized in that: the refractory sand is zirconium oxide.
6. The process for manufacturing a mixing core for a static mixer according to claim 1, characterized in that: and in the step S4, the acid solution is a nitric acid solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111431302.0A CN113996761A (en) | 2021-11-29 | 2021-11-29 | Manufacturing process of mixing core of static mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111431302.0A CN113996761A (en) | 2021-11-29 | 2021-11-29 | Manufacturing process of mixing core of static mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113996761A true CN113996761A (en) | 2022-02-01 |
Family
ID=79930656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111431302.0A Pending CN113996761A (en) | 2021-11-29 | 2021-11-29 | Manufacturing process of mixing core of static mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113996761A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63230251A (en) * | 1987-03-19 | 1988-09-26 | Hisao Kojima | Apparatus for producing mixing element |
| US4921038A (en) * | 1988-05-20 | 1990-05-01 | Nobuyoshi Sasaki | Process for preparing mold for investment casting |
| CN1116963A (en) * | 1994-04-19 | 1996-02-21 | 小久夫 | Element of mixing apparatus and making of same |
| CN101421029A (en) * | 2006-02-07 | 2009-04-29 | 斯塔米斯科技术股份公司 | Mixing element for static mixer, static mixer and method of production of such a mixing element |
| CN106762071A (en) * | 2016-12-09 | 2017-05-31 | 江苏多为机械工业有限公司 | A kind of automobile engine to exhaust joint and its production technology |
| CN107805765A (en) * | 2017-11-14 | 2018-03-16 | 郑媛媛 | A kind of processing technology of valve adpting flange |
| CN108602084A (en) * | 2015-12-23 | 2018-09-28 | 联邦科学技术研究组织 | Rotating device |
| CN109986029A (en) * | 2017-12-29 | 2019-07-09 | 宁波鑫象不锈钢制品有限公司 | Pump body full form casting process |
| CN109986025A (en) * | 2017-12-29 | 2019-07-09 | 宁波鑫象不锈钢制品有限公司 | Stainless steel water pump vane wheel full form casting process |
| CN110722103A (en) * | 2019-11-26 | 2020-01-24 | 温州万虹阀门有限公司 | Precision casting process of high-rotation-speed mixing head |
-
2021
- 2021-11-29 CN CN202111431302.0A patent/CN113996761A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63230251A (en) * | 1987-03-19 | 1988-09-26 | Hisao Kojima | Apparatus for producing mixing element |
| US4921038A (en) * | 1988-05-20 | 1990-05-01 | Nobuyoshi Sasaki | Process for preparing mold for investment casting |
| CN1116963A (en) * | 1994-04-19 | 1996-02-21 | 小久夫 | Element of mixing apparatus and making of same |
| CN101421029A (en) * | 2006-02-07 | 2009-04-29 | 斯塔米斯科技术股份公司 | Mixing element for static mixer, static mixer and method of production of such a mixing element |
| CN108602084A (en) * | 2015-12-23 | 2018-09-28 | 联邦科学技术研究组织 | Rotating device |
| CN106762071A (en) * | 2016-12-09 | 2017-05-31 | 江苏多为机械工业有限公司 | A kind of automobile engine to exhaust joint and its production technology |
| CN107805765A (en) * | 2017-11-14 | 2018-03-16 | 郑媛媛 | A kind of processing technology of valve adpting flange |
| CN109986029A (en) * | 2017-12-29 | 2019-07-09 | 宁波鑫象不锈钢制品有限公司 | Pump body full form casting process |
| CN109986025A (en) * | 2017-12-29 | 2019-07-09 | 宁波鑫象不锈钢制品有限公司 | Stainless steel water pump vane wheel full form casting process |
| CN110722103A (en) * | 2019-11-26 | 2020-01-24 | 温州万虹阀门有限公司 | Precision casting process of high-rotation-speed mixing head |
Non-Patent Citations (1)
| Title |
|---|
| 姜不居: "《实用熔模铸造技术》", 辽宁科学技术出版社, pages: 271 - 274 * |
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