CN207205181U - A kind of ultra-thin shell hot investment casting combines rod core with decompression type - Google Patents
A kind of ultra-thin shell hot investment casting combines rod core with decompression type Download PDFInfo
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- CN207205181U CN207205181U CN201721263962.1U CN201721263962U CN207205181U CN 207205181 U CN207205181 U CN 207205181U CN 201721263962 U CN201721263962 U CN 201721263962U CN 207205181 U CN207205181 U CN 207205181U
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Abstract
A kind of ultra-thin shell hot investment casting combines rod core with decompression type, and rod core is made up of sleeve and set core, and multiple vents are evenly equipped with the working end side face of sleeve, and the working end for covering core is inserted into the working end of sleeve, is covered and is provided with gap between core outer peripheral face and sleeve inner peripheral surface.In dewaxing process, wax-pattern expanded by heating is to slowly melting, because shell hinders, wax material/slack wax can be flowed into sleeve by vent, then impact of the bulbs of pressure of wax-pattern to shell is reduced, uniform vent can make shell uniform force, efficiently avoid the problem of shell ruptures.
Description
Technical field
Shell hot investment casting field is the utility model is related to, especially a kind of ultra-thin shell hot investment casting combines rod with decompression type
Core.
Background technology
The common two kinds of technique of precision-investment casting：Water glass type casing tech and silicasol case technique.The spy of two kinds of technique
Putting is：1. sodium silicate shell process costs are low, the cycle is short, but have environmentally friendly risk；2. silicasol case process costs are high, the cycle
It is long, but good product quality, environmental risk are small.Shell processed week be present to solve silicasol case technique in Dongfeng Precision Casting Co., Ltd.
The problem of phase is long, cost is high, research apply ultra-thin shell silicasol case technique, and shell thickness is subtracted by original 10-12 millimeters
6-8 millimeters are arrived less, while solve Cost Problems, periodic problem, environmental issue.Either traditional shell, or ultra-thin shell,
Although the elevated temperature strength after roasting is very high, wet strength is not high.Especially in transhipment, dewaxing process, by physical impacts, wax-pattern
Expansion extruding easily produces shell rupture, and gently then rill, heavy then cast rupture runout occurs in cast(ing) surface.
The content of the invention
The utility model provides a kind of ultra-thin shell hot investment casting and combines rod core with decompression type, solves wax-pattern in dewaxing process
Extruding force is produced to shell because of expanded by heating, avoids the problem of shell rupture.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is：A kind of ultra-thin shell hot investment casting decompression
Formula combines rod core, it is characterised in that：Rod core is made up of sleeve and set core, and multiple decompressions are evenly equipped with the working end side face of sleeve
Hole, the working end for covering core are inserted into the working end of sleeve, are covered and are provided with gap between core outer peripheral face and sleeve inner peripheral surface.
Above-mentioned technical proposal is further limited, the vent on the rod core is a diameter of：4-5 millimeters.
Above-mentioned technical proposal is further limited, the gap between the set core and sleeve is 0.4-0.6 millimeters.
Beneficial effect：In dewaxing process, wax-pattern expanded by heating is to slowly melting, and because shell hinders, wax material/slack wax can lead to
Cross vent to flow into sleeve, then reduce impact of the bulbs of pressure to shell of wax-pattern, uniform vent can make shell by
Power is uniform, efficiently avoid the problem of shell ruptures.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the tube-in-tube structure schematic diagram in the utility model.
Fig. 3 is the set cored structure schematic diagram in the utility model.
Fig. 4 is the utility model use state figure.
Fig. 5 is Fig. 4 left view.
Embodiment
Most preferred embodiment 1：As shown in figure 1, a kind of ultra-thin shell hot investment casting combines rod core with decompression type, rod core is by sleeve 1
Formed with set core 2, multiple vents 3 are evenly equipped with the working end side face of sleeve, a diameter of 4.5 millimeters of each vent, are covered
The working end of core is inserted into the working end of sleeve, is covered between core outer peripheral face and sleeve inner peripheral surface provided with 0.5 millimeter of gap.Adopt
With 4.5 millimeters of vents and 0.5 millimeter of gap, have the following effects that：1. slack wax is not easily accessible in sleeve when pressing wax；2.
Effect of easing stress can reach optimum state；3. rod rear enclosure core processed easily takes out.
Embodiment 2：As shown in figure 1, a kind of ultra-thin shell hot investment casting combines rod core with decompression type, rod core is by sleeve and set core
Form, be evenly equipped with multiple vents on the working end side face of sleeve, a diameter of 4 millimeters of each vent, cover the working end of core
It is inserted into the working end of sleeve, covers between core outer peripheral face and sleeve inner peripheral surface provided with 0.4 millimeter of gap.
Embodiment 3：As shown in figure 1, a kind of ultra-thin shell hot investment casting combines rod core with decompression type, rod core is by sleeve and set core
Form, be evenly equipped with multiple vents on the working end side face of sleeve, a diameter of 5 millimeters of each vent, cover the working end of core
It is inserted into the working end of sleeve, covers between core outer peripheral face and sleeve inner peripheral surface provided with 0.6 millimeter of gap.
As shown in Fig. 2 the sleeve 1 is made up of the first cylinder 101, the second cylinder 102, cover plate 103 and fix bar 104,
Multiple decompressions are distributed with the side face that the left end of first cylinder is nozzle end, the right-hand member of the first cylinder is blind end, the first cylinder
Hole 3, the left and right ends insertion of the second cylinder, the first cylinder is integral type structure by annular cover plate and the second barrel soldering, the
The barrel chamber of one cylinder and the second cylinder communicates, and using cover plate as boundary, the length of the first cylinder is more than the length of the second cylinder, fix bar
It is fixed in symmetry shape on the second cylinder, connected mode is welding.In cover plate insertion rod wax, it can prevent rod wax from coming off；It is fixed
Bar is used to hang module.
As shown in figure 3, the set core 2 is made up of core bar 201 and handle 202, the middle part of handle and the left end of core bar are fixed
Connection, connected mode are welding.
Rod core makes explanation：L1It is defined as length sleeve；L2It is defined as covering core length, L2=L1+ 10, facilitate worker to extract；
ф 1 is defined as vent diameter value；ф 2 is defined as sleeve diameter value, 2=4 × ф of ф 1；ф 3 is defined as loop bar diameter value, and ф 3=
ф 2 subtracts the gap width between set core and sleeve, ensures not leak wax during pressure wax, is also convenient for pulling and pushing set core.
Application method：As shown in Figures 4 and 5, during rod wax processed, first sleeve is placed in the die cavity of rod mould mould 4
Corresponding position, then the core bar covered in core is inserted into sleeve from sleeve tube port position, wax is penetrated after matched moulds, ensures sleeve when penetrating wax
It is in vertical shape with set core, rod wax is taken out after pressurize, cooling, the handle in set core of shaking hands extracts core bar out.Rod wax is through normal group
To set, enter dewaxing link after shell process processed, in dewaxing process, wax-pattern expanded by heating is to slowly melting, because shell hinders, wax material/
Slack wax can ooze out to space direction, then reduce impact of the bulbs of pressure to shell.
Benefit explanation：1st, it is damaged can to reduce formwork dewaxing for the utility model：Damaged ratio（5%）× yield（Ton）× shell processed
Cost（2500 yuan/ton）, year about 1,250,000 yuan of benefit（According to 10000 tons of 2016 annual production）；2nd, the utility model has ensured shell
The smooth popularization and application of technology：Shell Project Benefit（220 yuan/ton）× yield（Ton）=220 ten thousand yuan（Indirect benefit）；It is expected that three
Term benefit：125 × 3=3,750,000 yuan.
Claims (3)
1. a kind of ultra-thin shell hot investment casting combines rod core with decompression type, it is characterised in that：Rod core is made up of sleeve and set core, sleeve
Working end side face on be evenly equipped with multiple vents, the working end for covering core is inserted into the working end of sleeve, set core outer peripheral face with
Gap is provided between sleeve inner peripheral surface.
2. a kind of ultra-thin shell hot investment casting combines rod core with decompression type according to claim 1, it is characterised in that：The rod core
On a diameter of 4-5 millimeters of vent.
3. a kind of ultra-thin shell hot investment casting according to claim 1 or claim 2 combines rod core with decompression type, it is characterised in that：It is described
The gap covered between core and sleeve is 0.4-0.6 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721263962.1U CN207205181U (en) | 2017-09-29 | 2017-09-29 | A kind of ultra-thin shell hot investment casting combines rod core with decompression type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721263962.1U CN207205181U (en) | 2017-09-29 | 2017-09-29 | A kind of ultra-thin shell hot investment casting combines rod core with decompression type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207205181U true CN207205181U (en) | 2018-04-10 |
Family
ID=61819683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721263962.1U Active CN207205181U (en) | 2017-09-29 | 2017-09-29 | A kind of ultra-thin shell hot investment casting combines rod core with decompression type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207205181U (en) |
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2017
- 2017-09-29 CN CN201721263962.1U patent/CN207205181U/en active Active
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