CN203541442U - Precision investment casting shell de-waxing device and flash burning de-waxing furnace - Google Patents
Precision investment casting shell de-waxing device and flash burning de-waxing furnace Download PDFInfo
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- CN203541442U CN203541442U CN201320753178.4U CN201320753178U CN203541442U CN 203541442 U CN203541442 U CN 203541442U CN 201320753178 U CN201320753178 U CN 201320753178U CN 203541442 U CN203541442 U CN 203541442U
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- Prior art keywords
- dewaxing
- heater
- furnace
- waxing
- shell
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- Expired - Lifetime
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- 238000005495 investment casting Methods 0.000 title claims abstract description 26
- 238000004018 waxing Methods 0.000 title claims abstract description 24
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 239000003345 natural gas Substances 0.000 claims abstract description 10
- 239000003063 flame retardant Substances 0.000 claims description 16
- 210000003205 muscle Anatomy 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000000979 retarding effect Effects 0.000 abstract 2
- 239000011257 shell material Substances 0.000 description 45
- 238000000034 method Methods 0.000 description 16
- 239000000463 material Substances 0.000 description 11
- 229910001069 Ti alloy Inorganic materials 0.000 description 6
- 239000002344 surface layer Substances 0.000 description 6
- 238000005266 casting Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- 239000003500 flue dust Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229960002415 trichloroethylene Drugs 0.000 description 2
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 231100000481 chemical toxicant Toxicity 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model relates to the technical field of precision investment casting, in particular to a precision investment casting shell de-waxing device and a flash burning de-waxing furnace. The precision investment casting shell de-waxing device comprises a steam de-waxing furnace and a flash burning de-waxing furnace. The flash burning de-waxing furnace comprises a furnace body, wherein a de-waxing disc used for containing a mold shell is disposed in the furnace body, a natural gas pipeline used for heating the inner cavity of the furnace body after ignition or an electric heater used for electrically heating the inner cavity of the furnace body are disposed on the furnace body, an inflaming retarding gas pipeline used for inputting inflaming retarding gas to the furnace body is also installed on the furnace body, and a de-waxing pipe used for being communicated with the outside of the furnace body is disposed on the de-waxing disc. When a precision investment casting shell de-waxing device is used, first, the steam de-waxing furnace is used for carrying out short-time and low-temperature steam de-waxing on the mold shell, enabling wax to be softened and gap to be formed between the wax and the shell, and then, the flash burning de-waxing furnace is used for carrying out high-temperature de-waxing on the mold shell, enabling the wax to be melted without leading to cracks on the mold, and melt-back will not occur in the face layer of the shell because there is no water on the surface of the shell.
Description
Technical field
The utility model relates to melted module precise casting technology field, and particularly dewaxing furnace is burnt in the device of fired mold precision casting type shell dewaxing and sudden strain of a muscle.
Background technology
As a material near-net-shape technology, precision-investment casting, in high accuracy, labyrinth casting, particularly plays irreplaceable effect in the shaping of high smelting temperature, high chemically active metal.Full form casting process process comprises compacting wax-pattern, group tree, shell processed, dewaxing, roasting, is cast into foundry goods.
The advantages such as it is little that titanium or titanium alloy has density, and intensity is high and corrosion-resistant have important application in aerospace industry.The high titanium alloy casting of the large, medium and small type quality requirement of various Aeronautics and Astronautics of the wall thickness≤3mm producing in enormous quantities at present all adopts precision-investment casting.
In titanium alloy precise-investment casting, surface shell technique is one of technology.Its process for making shell scheme is that surface layer consists of the high extraordinary oxide of chemical stability (as yittrium oxide, zirconia), and all the other type shell materials are identical with common investment pattern precision casting technique with process for making shell.
Titanium alloy precise-investment casting has two kinds to the process for dewaxing of shell: a kind of is trichloro-ethylene lost-wax process, although this technique can guarantee that at dewaxing process shell is not expanded and causes cracking by wax material fusing cause, but trichloro-ethylene belongs to chemical toxicant product, to health injury is very large, be prohibited from using gradually; Another kind is steam dewaxing method, the equipment that this technique is used is steam dewaxing stove, this technique requires very tight to the shell Modeling Material of titanium alloy precise-investment casting, in order to produce high-precision Aero-Space titanium alloy casting, the surface layer of domestic employing is yttrium shell, yet thereby yittrium oxide has stronger water imbibition causes steam course surface layer can produce back dissolving phenomenon.
Summary of the invention
The purpose of this utility model is to provide a kind of device of fired mold precision casting type shell dewaxing, so that shell not only there will not be the crackle that expands and cause because of wax material in dewaxing process, nor there will be the surface layer yittrium oxide back dissolving causing because of water suction, the moisture absorption.The purpose of this utility model is also to provide a kind of sudden strain of a muscle of the device for above-mentioned fired mold precision casting type shell dewaxing to burn dewaxing furnace.
To achieve these goals, the device of fired mold precision casting type shell dewaxing of the present utility model adopts following technical scheme: the device of fired mold precision casting type shell dewaxing, comprise steam dewaxing stove, also comprise dodging and burn dewaxing furnace, described sudden strain of a muscle is burnt dewaxing furnace and is comprised body of heater, in body of heater, be provided with for putting the dewaxing dish of module shell, body of heater is provided with for the natural gas line of the heating furnace body inner chamber of lighting a fire or the electric heater of electric furnace intracoelomic cavity, on body of heater, be also provided with to the fire-retardant gas pipeline of inputting fire-retardant gas in body of heater, dewaxing dish is provided with the de-waxing pipe for being communicated with body of heater outside.
On body of heater, be also provided with chimney.
To achieve these goals, sudden strain of a muscle of the present utility model is burnt dewaxing furnace and is adopted following technical scheme: dodge and burn dewaxing furnace, comprise body of heater, in body of heater, be provided with for putting the dewaxing dish of module shell, body of heater is provided with for the natural gas line of the heating furnace body inner chamber of lighting a fire or the electric heater of electric furnace intracoelomic cavity, on body of heater, be also provided with for input the fire-retardant gas pipeline of fire-retardant gas in body of heater, dewaxing dish is provided with the de-waxing pipe for being communicated with body of heater outside.
On body of heater, be also provided with chimney.
The beneficial effect of the device of fired mold precision casting type shell dewaxing of the present utility model: this device comprises steam dewaxing stove and dodges and burn dewaxing furnace, in use, can first adopt steam dewaxing stove module shell to be carried out to the steam dewaxing of short time and low temperature, make wax material softening and and between shell, produce gap, and then adopt sudden strain of a muscle burning dewaxing furnace to carry out high temperature dewaxing to module shell, by fire-retardant gas pipeline, in body of heater, input fire-retardant gas, can stop wax material burning, make wax material melt and can not cause shell to occur crackle, shell surface does not have moisture, thereby shell surface layer there will not be back dissolving.
Further, the body of heater that dodges burning dewaxing furnace is provided with chimney, is convenient in time the flue dust in body of heater be discharged to body of heater, has avoided on shell surface, producing flue dust after dewaxing completes.
Accompanying drawing explanation
Fig. 1 is the structural representation of steam dewaxing stove in the embodiment 1 of device of fired mold precision casting type shell of the present utility model dewaxing;
Fig. 2 dodges the structural representation that burns dewaxing furnace in the embodiment 1 of device of fired mold precision casting type shell of the present utility model dewaxing.
The specific embodiment
The device of fired mold precision casting type shell dewaxing comprises steam dewaxing stove and dodges and burn dewaxing furnace.
As shown in Figure 1: steam dewaxing stove comprises housing 1, be provided with supporting disk 2 in housing 1, housing 1 is provided with drainpipe 3 and de-waxing pipe 4.Supporting disk 2 is for putting module shell 5, and drainpipe 3 is for completing laggard row release draining steam dewaxing furnaceman.The concrete structure of this steam dewaxing stove and operation principle are prior art, are not described in detail in this.
As shown in Figure 2: dodge burning dewaxing furnace and comprise body of heater 11, in body of heater 11, be provided with for putting the dewaxing dish 12 of module shell 5, dewaxing dish 12 structure that takes the shape of the letter U, body of heater 11 is provided with the natural gas line 13 for the heating furnace body inner chamber of lighting a fire, on body of heater 11, be also provided with fire-retardant gas pipeline 14, dewaxing dish 12 is provided with the de-waxing pipe 15 for being communicated with body of heater outside.De-waxing pipe 15 can drain into the wax material after melting outside body of heater 11 in time.Fire-retardant gas pipeline 14 for to the fire-retardant gas of the interior input of body of heater 11 to stop wax material ignition, fire-retardant gas is argon gas or carbon dioxide.When adopt to dodge burning dewaxing furnace module shell heated, wax material energy fast softening and can not burning.For the flue dust in body of heater is discharged in time, on body of heater, be also provided with chimney 16.In other embodiments, can also save chimney.In the present embodiment, natural gas line 13 has two, and two natural gas lines 13 are symmetrically set in the left and right sides of upper of furnace body, and de-waxing pipe 15 is positioned at the centre that 12 bottoms are coiled in dewaxing, fire-retardant gas pipeline 14 is positioned at the bottom of body of heater and is communicated with dewaxing dish 12, and chimney 16 is positioned at the top of body of heater.
In other embodiment of the device dewaxing at fired mold precision casting type shell of the present utility model, dodge the natural gas line burning in dewaxing furnace and can also replace with electric heater, electric heater can be used for electric furnace intracoelomic cavity.
The use procedure of the device of above-mentioned fired mold precision casting type shell dewaxing comprises the following steps:
A) preparation process before dewaxing: lay down module shell frock, then cut cup, dewaxing mouth and the rising head of module shell, then adopt compressed air that module shell cut edge is cleaned out;
B) heating dewaxing step: 1) module shell is put into steam dewaxing stove and carried out 1～1.5 minute steam dewaxing, dewaxing pressure is 0.6MPa, 160 ± 3 ℃ of dewaxing temperatures; 2) to dodging to burn in dewaxing furnace, input fire-retardant gas, sudden strain of a muscle is burnt to dewaxing furnace and be preheated to 850 degree, then the module shell after step 1 is processed is packed fast into the high temperature carrying out 10～30 minutes in sudden strain of a muscle burning dewaxing furnace and dodge burning dewaxing (the concrete time of dewaxing determines according to module shell part dimension and structure), dewaxing temperature is 850 ± 10 ℃, and the mode of heating that dodges the employing of burning dewaxing furnace is natural gas fired heating.
The beneficial effect of this device: while adopting device of the present utility model to dewax, module shell in dewaxing process because not producing shell surface layer back dissolving with contact with moisture; Normal temperature strength, the elevated temperature strength of module shell shell after dewaxing all can reach technological requirement; Can avoid module shell because of single steam dewaxing or dodge and burn the shell crackle that in dewaxing process, wax material melting dilation causes.
The embodiment of dewaxing furnace is burnt in sudden strain of a muscle of the present utility model, and the structure that dewaxing furnace is burnt in the sudden strain of a muscle in the embodiment of the device that the structure of this sudden strain of a muscle burning dewaxing furnace dewaxes with above-mentioned fired mold precision casting type shell is identical, thereby this partial content, and it is no longer repeated.
Claims (4)
1. the device that fired mold precision casting type shell dewaxes, comprise steam dewaxing stove, it is characterized in that: also comprise dodging and burn dewaxing furnace, described sudden strain of a muscle is burnt dewaxing furnace and is comprised body of heater, in body of heater, be provided with for putting the dewaxing dish of module shell, body of heater is provided with for the natural gas line of the heating furnace body inner chamber of lighting a fire or the electric heater of electric furnace intracoelomic cavity, on body of heater, be also provided with to the fire-retardant gas pipeline of inputting fire-retardant gas in body of heater, dewaxing dish be provided with for the outside de-waxing pipe being communicated with of body of heater.
2. the device of fired mold precision casting type shell dewaxing according to claim 1, is characterized in that: on body of heater, be also provided with chimney.
3. dodge and burn dewaxing furnace, it is characterized in that: comprise body of heater, in body of heater, be provided with for putting the dewaxing dish of module shell, body of heater is provided with for the natural gas line of the heating furnace body inner chamber of lighting a fire or the electric heater of electric furnace intracoelomic cavity, on body of heater, be also provided with for input the fire-retardant gas pipeline of fire-retardant gas in body of heater, dewaxing dish is provided with the de-waxing pipe for being communicated with body of heater outside.
4. according to the sudden strain of a muscle of claim 3, burn dewaxing furnace, it is characterized in that: on body of heater, be also provided with chimney.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320753178.4U CN203541442U (en) | 2013-11-26 | 2013-11-26 | Precision investment casting shell de-waxing device and flash burning de-waxing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320753178.4U CN203541442U (en) | 2013-11-26 | 2013-11-26 | Precision investment casting shell de-waxing device and flash burning de-waxing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203541442U true CN203541442U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320753178.4U Expired - Lifetime CN203541442U (en) | 2013-11-26 | 2013-11-26 | Precision investment casting shell de-waxing device and flash burning de-waxing furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN203541442U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109175240A (en) * | 2018-09-20 | 2019-01-11 | 贵州安吉航空精密铸造有限责任公司 | A kind of investment casting formwork dewaxing device and investment casting formwork process for dewaxing |
-
2013
- 2013-11-26 CN CN201320753178.4U patent/CN203541442U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109175240A (en) * | 2018-09-20 | 2019-01-11 | 贵州安吉航空精密铸造有限责任公司 | A kind of investment casting formwork dewaxing device and investment casting formwork process for dewaxing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 471023 Henan Province, Luoyang city Luolong District Yuwen Kai Street No. 67 Patentee after: LUOYANG PENGQI INDUSTRIAL CO., LTD. Address before: Kaiyuan Avenue, Luolong District 471000 in Henan province Luoyang City, No. 248 Continental Mansion 818 Patentee before: LUOYANG PENGQI INDUSTRIAL CO., LTD. |