CN109226698A - The anti-deformation device and large-caliber pipe fittings casting technique that dip-coating process uses - Google Patents
The anti-deformation device and large-caliber pipe fittings casting technique that dip-coating process uses Download PDFInfo
- Publication number
- CN109226698A CN109226698A CN201811443866.4A CN201811443866A CN109226698A CN 109226698 A CN109226698 A CN 109226698A CN 201811443866 A CN201811443866 A CN 201811443866A CN 109226698 A CN109226698 A CN 109226698A
- Authority
- CN
- China
- Prior art keywords
- pipe fitting
- bubbles model
- dip
- fixed disk
- interior fixed
- 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
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000003618 dip coating Methods 0.000 title claims abstract description 25
- 238000005266 casting Methods 0.000 title claims abstract description 22
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000006260 foam Substances 0.000 description 3
- 244000035744 Hura crepitans Species 0.000 description 2
- 239000003110 molding sand Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C23/00—Tools; Devices not mentioned before for moulding
- B22C23/02—Devices for coating moulds or cores
-
- 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
- B22C7/02—Lost patterns
- B22C7/023—Patterns made from expanded plastic materials
-
- 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
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a kind of anti-deformation devices that dip-coating process uses, interior fixed disk including the open end for being inserted into pipe fitting bubbles model after pipe fitting bubbles model dip-coating, interior fixed disk has the contact surface being bonded with the inner headed face of pipe fitting bubbles model, the contact surface is circular conical surface, and the diameter of pipe fitting bubbles model is greater than 1000mm.Bigbore pipe fitting bubbles model is held round in dip-coating process using interior fixed disk, effectively prevent pipe fitting bubbles model to be deformed, the casting quality of large-caliber pipe fittings can be improved by the anti-deformation device that dip-coating process of the present invention uses.The present invention also provides a kind of large-caliber pipe fittings casting techniques.
Description
Technical field
The invention belongs to pipe fitting production technology technical fields, specifically, used the present invention relates to a kind of dip-coating process
Anti-deformation device and large-caliber pipe fittings casting technique.
Background technique
Use technique of founding casing with vacuum production heavy-caliber nodular cast iron pipe part (large-caliber pipe fittings refer to diameter for
The pipe fitting of 1000mm or more), precise control model roundness is to obtain the basis of castings.Large-caliber pipe fittings produce according to statistics
It has the following problems in the process:
1, pipe fitting bubbles model is easy to produce ovalizing deflection in dip-coating and baking process；
2, in modeling process, with adding sand, carry out to ram-jolt also resulting in the deformation of pipe fitting bubbles model.
There is ovalizing deflection in the pipe fitting casting deformed above that can all directly result in after the completion of casting, scraps wind there are biggish
Danger.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention provides a kind of leaching
Apply the anti-deformation device and large-caliber pipe fittings casting technique that process uses, it is therefore an objective to improve the casting quality of large-caliber pipe fittings.
To achieve the goals above, the technical scheme adopted by the invention is as follows: the anti-deformation device that dip-coating process uses, including
For being inserted into the interior fixed disk of the open end of pipe fitting bubbles model after pipe fitting bubbles model dip-coating, interior fixed disk has and pipe fitting
The contact surface of the inner headed face fitting of bubbles model, the contact surface are circular conical surface, and the diameter of pipe fitting bubbles model is greater than 1000mm.
The interior fixed disk is truncated cone structure, and interior fixed disk has a bigger diameter end and a miner diameter end, bigger diameter end
Diameter be greater than the diameter of miner diameter end, miner diameter end is inserted into the open end of the pipe fitting bubbles model, and bigger diameter end is located at pipe fitting and steeps
The outside of foam model.
The present invention also provides a kind of large-caliber pipe fittings casting techniques, including process:
The production of S1, pipe fitting bubbles model；
S2, dip-coating；
S3, baking；
S4, filling moulding；
S5, casting；
S6, cooling take out casting；
Wherein, above-mentioned anti-deformation device is used in the process S2.
The anti-deformation device is used in the process S3, the open end of interior fixed disk insertion tube part bubbles model is default
Disk is toasted together with pipe fitting bubbles model.
The anti-deformation device that dip-coating process of the present invention uses uses interior fixed disk by bigbore pipe fitting in dip-coating process
Bubbles model is held round, and pipe fitting bubbles model is effectively prevent to be deformed, and the casting quality of large-caliber pipe fittings can be improved.
Detailed description of the invention
This specification includes the following drawings, and shown content is respectively:
Fig. 1 is the use state diagram for the anti-deformation device that dip-coating process of the present invention uses；
In the figure, it is marked as 1, pipe fitting bubbles model；2, interior fixed disk；3, contact surface.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to a specific embodiment of the invention further details of
Explanation, it is therefore an objective to those skilled in the art be helped to have more complete, accurate and deep reason to design of the invention, technical solution
Solution, and facilitate its implementation.
As shown in Figure 1, the present invention provides a kind of anti-deformation devices that dip-coating process uses, including in pipe fitting foam
The interior fixed disk of the open end of pipe fitting bubbles model is inserted into after model dip-coating, interior fixed disk has the inner circle with pipe fitting bubbles model
The contact surface that face paste is closed, the contact surface are circular conical surface, and the diameter of pipe fitting bubbles model is greater than 1000mm.
Specifically, interior fixed disk has a bigger diameter end and one as shown in Figure 1, interior fixed disk is truncated cone structure
A miner diameter end, the diameter of bigger diameter end are greater than the diameter of miner diameter end, and bigger diameter end and miner diameter end are the axial ends of interior fixed disk, default
The diameter of the bigger diameter end of disk is greater than the interior diameter of the open end of pipe fitting bubbles model.After pipe fitting bubbles model completes dip-coating,
By in the circular hole of the open end of interior fixed disk insertion tube part bubbles model, miner diameter end is inserted into the open end of pipe fitting bubbles model,
Bigger diameter end is located at the outside of pipe fitting bubbles model, and interior fixed disk and pipe fitting bubbles model are coaxial state.Contact surface is default circle
The periphery of disk, the inner headed face of pipe fitting bubbles model being bonded with contact surface are circular conical surface, the taper and contact surface of the inner headed face
Taper size it is identical.One end of contact surface is connect with the end face edge of the bigger diameter end of interior fixed disk, the other end of contact surface with
The end face edge of the miner diameter end of interior fixed disk connects, and the end face of the bigger diameter end of interior fixed disk and the end face of miner diameter end are parallel
Two circular flats and be complete circular flat.The interior fixed disk of pyramidal structure, intensity is high, good reliability.
The structural strength of above-mentioned interior fixed disk is high, and interior fixed disk is supported on model inner wall, with the model of supporting part coating, has
What is imitated preventing model to be deformed in coating baking process and becoming oval；Model has interior fixed disk conduct in baking process
Support, the model for having no non-deformability after support dip-coating are in the state of a rounding, until baking end coating foundation is strong
Degree, model has certain intensity at this time, improves the ability of the subsequent resistance to deformation of model.
The present invention also provides a kind of large-caliber pipe fittings casting techniques, including following process:
The production of S1, pipe fitting bubbles model；
S2, dip-coating；
S3, baking；
S4, filling moulding；
S5, casting；
S6, cooling take out casting.
In above-mentioned operation S1, according to the shape of large-caliber pipe fittings casting, pipe fitting bubbles model is made using eps foam,
The diameter of pipe fitting bubbles model is greater than 1000mm.
In above-mentioned operation S2, the anti-deformation device of above structure is used.Specifically, the pipe fitting bubbles model that will be made
It is put into coating pond and carries out dip-coating, after the completion of dip-coating, interior fixed disk is inserted into the open end of pipe fitting bubbles model, interior fixed disk
Contact surface is bonded with the inner headed face of the open end of pipe fitting bubbles model.
In above-mentioned operation S3, the same anti-deformation device for using above structure, interior fixed disk insertion tube part bubbles model
Open end, interior fixed disk toasted together with pipe fitting bubbles model, until pipe fitting bubbles model is dry qualified.Baking terminates
Afterwards, fixed disk in taking out.
In above-mentioned operation S4, pipe fitting bubbles model is placed in sandbox, molding sand is then filled into sandbox, is buried with molding sand
If pipe fitting bubbles model, filling moulding is carried out.
It in above-mentioned operation S4, is corrected in modeling process using open end of the sand circle to pipe fitting bubbles model, benefit
It is adjusted with part of the supporting element to pipe fitting bubbles model, effectively prevents pipe fitting bubbles model in the deformation of modeling process,
Until the overall dimensions of pipe fitting bubbles model are in defined size range.
The present invention is exemplarily described in conjunction with attached drawing above.Obviously, present invention specific implementation is not by above-mentioned side
The limitation of formula.As long as using the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out；Or not
It is improved, above-mentioned conception and technical scheme of the invention are directly applied into other occasions, in protection scope of the present invention
Within.
Claims (4)
1. the anti-deformation device that dip-coating process uses, which is characterized in that including for the insertion tube after pipe fitting bubbles model dip-coating
The interior fixed disk of the open end of part bubbles model, interior fixed disk have the contact surface being bonded with the inner headed face of pipe fitting bubbles model,
The contact surface is circular conical surface, and the diameter of pipe fitting bubbles model is greater than 1000mm.
2. the anti-deformation device that dip-coating process according to claim 1 uses, which is characterized in that the interior fixed disk is circle
Taper type structure, interior fixed disk have a bigger diameter end and a miner diameter end, and the diameter of bigger diameter end is greater than the diameter of miner diameter end, small
Diameter end is inserted into the open end of the pipe fitting bubbles model, and bigger diameter end is located at the outside of pipe fitting bubbles model.
3. large-caliber pipe fittings casting technique, including process:
The production of S1, pipe fitting bubbles model；
S2, dip-coating；
S3, baking；
S4, filling moulding；
S5, casting；
S6, cooling take out casting；
It is characterized in that, using anti-deformation device described in as claimed in claim 1 or 22 in the process S2.
4. large-caliber pipe fittings casting technique according to claim 3, which is characterized in that using described anti-in the process S3
Deformation device, the open end of interior fixed disk insertion tube part bubbles model, interior fixed disk are toasted together with pipe fitting bubbles model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811443866.4A CN109226698A (en) | 2018-11-29 | 2018-11-29 | The anti-deformation device and large-caliber pipe fittings casting technique that dip-coating process uses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811443866.4A CN109226698A (en) | 2018-11-29 | 2018-11-29 | The anti-deformation device and large-caliber pipe fittings casting technique that dip-coating process uses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109226698A true CN109226698A (en) | 2019-01-18 |
Family
ID=65073725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811443866.4A Pending CN109226698A (en) | 2018-11-29 | 2018-11-29 | The anti-deformation device and large-caliber pipe fittings casting technique that dip-coating process uses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109226698A (en) |
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| KR100939800B1 (en) * | 2009-07-03 | 2010-02-03 | (주)대진코퍼레이션 | Manufacturing process for radiant tube u-bend |
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| CN205309226U (en) * | 2016-01-29 | 2016-06-15 | 山西华翔集团有限公司 | Casting of V method combines casting structure with disappearance mould |
| CN106378418A (en) * | 2016-11-29 | 2017-02-08 | 芜湖新兴铸管有限责任公司 | Deformation-preventing device for evanescent mode ductile iron pipe fitting bell mouth |
| CN107570664A (en) * | 2016-08-12 | 2018-01-12 | 第拖拉机股份有限公司 | A kind of method that large scale disc-like ironcasting is produced using lost foam casting |
| CN107876695A (en) * | 2017-12-15 | 2018-04-06 | 芜湖新兴新材料产业园有限公司 | Prevent process structure of lost foam pattern deformation and preparation method thereof |
| CN207195939U (en) * | 2017-07-28 | 2018-04-06 | 新兴铸管股份有限公司 | A kind of reinforcement type female end blocks up |
| CN209077732U (en) * | 2018-11-29 | 2019-07-09 | 芜湖新兴新材料产业园有限公司 | The anti-deformation device that dip-coating process uses |
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Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1060419A (en) * | 1990-08-28 | 1992-04-22 | 三井石油化学工业株式会社 | Inner-walls of duct be coated with lining process |
| JPH0899152A (en) * | 1994-09-29 | 1996-04-16 | Kubota Corp | Foamed pattern for casting lost foam pattern |
| CN2883294Y (en) * | 2005-11-10 | 2007-03-28 | 闫国栋 | Spigot anti-deforming bearing ring of centrifugal nodular cast iron tube |
| KR100939800B1 (en) * | 2009-07-03 | 2010-02-03 | (주)대진코퍼레이션 | Manufacturing process for radiant tube u-bend |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |
Application publication date: 20190118 |