CN109261900A - A kind of process for making shell of metal parts precision casting shell - Google Patents
A kind of process for making shell of metal parts precision casting shell Download PDFInfo
- Publication number
- CN109261900A CN109261900A CN201811417559.9A CN201811417559A CN109261900A CN 109261900 A CN109261900 A CN 109261900A CN 201811417559 A CN201811417559 A CN 201811417559A CN 109261900 A CN109261900 A CN 109261900A
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- Prior art keywords
- shell
- air
- sand
- metal parts
- temperature
- 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.)
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 20
- 239000002184 metal Substances 0.000 title claims abstract description 20
- 230000008569 process Effects 0.000 title claims abstract description 20
- 238000005495 investment casting Methods 0.000 title claims abstract description 18
- 239000004576 sand Substances 0.000 claims abstract description 37
- 150000001875 compounds Chemical class 0.000 claims abstract description 26
- 239000013078 crystal Substances 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 21
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 20
- 229920002472 Starch Polymers 0.000 claims abstract description 19
- 235000019698 starch Nutrition 0.000 claims abstract description 19
- 239000008107 starch Substances 0.000 claims abstract description 19
- 239000002002 slurry Substances 0.000 claims abstract description 6
- 238000009955 starching Methods 0.000 claims abstract description 4
- 230000003247 decreasing effect Effects 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 76
- 239000000377 silicon dioxide Substances 0.000 claims description 22
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 8
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 7
- 230000007613 environmental effect Effects 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- 229910052681 coesite Inorganic materials 0.000 claims description 4
- 229910052906 cristobalite Inorganic materials 0.000 claims description 4
- 229910052682 stishovite Inorganic materials 0.000 claims description 4
- 229910052905 tridymite Inorganic materials 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 229910001570 bauxite Inorganic materials 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 238000010891 electric arc Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000036541 health Effects 0.000 abstract description 5
- 230000002411 adverse Effects 0.000 abstract description 3
- 239000005416 organic matter Substances 0.000 abstract description 2
- 239000010959 steel Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 229910052726 zirconium Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007605 air drying Methods 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
Abstract
The invention discloses a kind of process for making shell of metal parts precision casting shell, comprising: the wax model of part to be produced is suppressed using mold；Compound crystal slurry is uniformly applied to after the wax model and uniformly sprinkles compound crystal sand on surface, is then carried out air-dried；It will not starch and uniformly sprinkle Mo Laisha on surface after being uniformly applied to the wax model, then carry out air-dried；Repeat preset quantity time to smear not to starch, sprinkle and do not carry out sand and air-dry, used in do not gradually decreased come the content of mullite powder in starching, use not carry out sand more and more thicker；Last time smearing does not spread Mo Laisha after not starching, and then air-dries；Wax is melted using high-temperature steam and is taken out；High-temperature roasting is carried out to shell, makes remaining wax in shell, moisture and organic matter volatilization.By the improvement to technique, production process and cost are reduced, while improving yields and reducing the health bring adverse effect to worker.
Description
Technical field
The present invention relates to silica sol precision casting technology fields, more particularly to a kind of metal parts precision casting shell
Process for making shell.
Background technique
Precision-investment casting at present is all then to be cast to molding to be cooled in formwork shell using metallic high temperature is melted；
Formwork shell is to be wrapped up by material layers, and wherein innermost layer is referred to as surface layer.The surface layer of current shell is using use
Made of natural zirconium English ore, and natural zirconium English ore resource is limited and expensive, causes the material cost of production high.
Zirconium ore is generallyd use at present as preferred material and carries out shell surface layer production, using type made of zirconium ore stone material
Shell includes ZrO2、SiO2Equal compounds, in non-vacuum environment easily with the FeO and Cr in molten steel2O3It is anti-that equal compounds generate chemistry
It answers, product surface is caused easily to form pit defect, reduce the yields of product.
In order to solve the pit defect of product surface, need by sprinkling the combustibles such as wax in the mould group of casting and carrying out
The operation of button case prevents from generating chemical reaction with the surface material of shell in molten steel casting process to build oxygen-free environment；But this
Sample needs to increase additional process and human cost, and can generate large quantity of air pollutant after the wax burning spread, to operator
Health care belt adversely affect.
Summary of the invention
In order to overcome above-mentioned defect existing in the prior art, the technical problem to be solved in the present invention is to provide a kind of metals
Machine parts'precise casts the process for making shell of shell, to reduce production process and cost, while improving yields and reducing to worker's
Health bring adverse effect.
In order to reach above-mentioned technical effect, the invention adopts the following technical scheme: a kind of metal parts precision casting shell
Process for making shell, comprising the following steps:
S1: the wax model of part to be produced is suppressed using mold；
S2: compound crystal slurry is uniformly applied to after the wax model and uniformly sprinkles compound crystal sand on surface, is then carried out air-dried；
S3: it will not starch and uniformly sprinkle Mo Laisha on surface after being uniformly applied to the wax model, then carry out air-dried；
S4: repeating preset quantity time step S3, used in do not gradually decreased come the content of mullite powder in starching, use
It is more and more thicker sand is not carried out；Last time repeats not spread Mo Laisha when step S3；
S5: it is melted out the wax of shell interior with high-temperature steam；
S6: high-temperature roasting is carried out to shell with roaster.
Further, in step sl: further including being cleaned using release agent to the wax model.
Further, in step s 2: the compound crystal sand be using bauxite as primary raw material, in electric arc with metallic silicon and
The mixing of silicon carbide high temperature is refined, main component composition are as follows: Al2O3>=90%, SiO2≤ 5%, SiC≤3%.
Further, in step s 2: the compound crystal slurry is that silica solution and compound crystal powder are mixed with the ratio of 1:2.8；
The compound crystal sand is the compound crystal sand of 100~120 mesh；Air-dry environmental condition are as follows: wind speed is between 3~5m/s, and temperature is in 22
Between~25 DEG C, humidity is between 60~70%；Air-dry time is between 8-10 hours.
Further, in step s3: described not mixed to starch for silica solution and mullite powder with the ratio of 1:1.8；
It is described do not come sand be 30~60 purposes do not carry out sand；Air-dry environmental condition are as follows: wind speed be between 3~5m/s, temperature in 22~
Between 26 DEG C, humidity is between 40-60%；Air-dry time is no less than 8 hours.
Further, in step s 4:
It is repeated four times step S3, in which:
What repetition step S3 was used for the first time is not mixed to starch for silica solution and mullite powder with the ratio of 1:1.6；Make
Not carrying out sand is that 30~60 purposes do not carry out sand；
What second of repetition step S3 was used is not mixed to starch for silica solution and mullite powder with the ratio of 1:1.5；Make
Not carrying out sand is that 16~30 purposes do not carry out sand；
What third time repetition step S3 was used is not mixed to starch for silica solution and mullite powder with the ratio of 1:1.4；Make
Not carrying out sand is that 16~30 purposes do not carry out sand；
What the 4th repetition step S3 was used is not mixed to starch for silica solution and mullite powder with the ratio of 1:1.3；No
The Mo Laisha used；
Air-dry environmental condition are as follows: wind speed is between 3~5m/s, and temperature is between 22~27 DEG C, and humidity is in 30-
Between 50%；Preceding air-dry time three times is no less than 8 hours, and the 4th air-dry time is no less than 6 hours.
Further, in step s 5: it is 0.6~0.8MPa, vapor (steam) temperature that the shell air-dried, which is placed in steam pressure,
To allow wax to be melted out in 170~180 DEG C of dewaxing kettles.
Further, in step s 6: the temperature of high-temperature roasting continues 70~90 minutes between 1100~1200 DEG C.
The lithofacies of compound crystal sand are mainly mullite phase, its advantage is that refractoriness is high, the prices of raw materials are low；It wherein can be with steel
The compounds content that oxidation reaction occurs for water is low, and the carborundum compound in shell pouring molten steel into before shell with regard to elder generation and type
Oxygen in shell chemically reacts, this allows for product surface and is not likely to produce pit defect.
According to a kind of process for making shell of metal parts precision casting shell provided by the present invention, reduction production work is reached
Sequence and cost, while improving yields and reducing the dysgenic effect of health bring to worker.
Detailed description of the invention
Fig. 1 is the fabrication processing figure of embodiment；
Fig. 2 is the wax illustraton of model of embodiment.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, right with reference to the accompanying drawings and embodiments
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figure 1, 2, a kind of process for making shell of metal parts precision casting shell, specifically produces a kind of metal parts,
The following steps are included:
Suppress the wax model 1 and wax die head 2 of metal parts using mold, and by 1 group of several wax models in
Formation group tree on wax die head 2；Then a group tree is cleaned using release agent.
Multiple pasting, stucco and air dry operation are carried out wherein to wax model 1 respectively:
The compound crystal slurry that silica solution and compound crystal powder are mixed with the ratio of 1:2.8 is uniformly applied to wax model 2 for the first time
The compound crystal sand for uniformly sprinkling 100~120 mesh on surface afterwards, then placing it in wind speed is 3m/s, and temperature is 22 DEG C, and humidity is
It is carried out in 60% environment air-dried；Specifically, compound crystal sand be using bauxite as raw material, it is high with metallic silicon and silicon carbide in electric arc
Temperature mixing is refined, and main component includes Al2O3、SiO2And SiC.
Silica solution and mullite powder wax model 2 is not applied to uniformly with what the ratio of 1:1.8 mixed to starch for the second time
30~60 purposes, which are uniformly sprinkled, on surface afterwards does not carry out sand；Then it carries out air-dried.
Silica solution and mullite powder are not applied to wax model 2 uniformly with what the ratio of 1:1.6 mixed to starch by third time
30~60 purposes, which are uniformly sprinkled, on surface afterwards does not carry out sand；Then it carries out air-dried.
4th time silica solution and mullite powder wax model 2 is not applied to uniformly with what the ratio of 1:1.5 mixed to starch
16~30 purposes, which are uniformly sprinkled, on surface afterwards does not carry out sand；Then it carries out air-dried.
5th time silica solution and mullite powder wax model 2 is not applied to uniformly with what the ratio of 1:1.4 mixed to starch
30~60 purposes, which are uniformly sprinkled, on surface afterwards does not carry out sand；Then it carries out air-dried.
Wherein, second to the 5th air drying condition: wind speed 3m/s, temperature are 22 DEG C, humidity 30%；Air-dry time is held
It is 8 hours continuous.
6th time silica solution and mullite powder are not uniformly applied to wax model 2 to starch with what the ratio of 1:1.3 mixed,
And it places it in the environment that wind speed is 3m/s, temperature is 22 DEG C, humidity is 30% and air-dries 6 hours.
Entire wax group tree and shell are placed in the environment that steam pressure is 0.6MPa, vapor (steam) temperature is 170 DEG C and allow wax
Outflow, obtains shell.
Obtained shell shell is placed in the environment that temperature is 1100-1200 DEG C and is roasted 70 minutes, so that in shell
Remaining wax, moisture and organic matter volatilize completely.
The lithofacies of compound crystal sand are mainly mullite phase, contain polyphenoils SiC in main chemical compositions, advantage is fire resisting
Degree is high, and the prices of raw materials are low；Hardly with molten steel oxidation reaction occurs for face-piece surface layer made of it, in pouring molten steel into shell
It is preceding just first to be chemically reacted with the oxygen in shell, reach the effect for preventing cast(ing) surface high-temperature oxydation from forming pit defect
Fruit；And after shell casting, without carrying out spreading the combustibles such as wax in mould group and buckleing the operation of case.
According to a kind of process for making shell of metal parts precision casting shell provided by the present embodiment, reduction production is reached
Process and cost, while improving yields and reducing the dysgenic effect of health bring to worker.
The above is a preferred embodiment of the present invention, it is noted that other include this metal machine parts'precise cast moulding
The process for making shell of shell, for those skilled in the art, without departing from the principles of the present invention, also
Several improvements and modifications can be made, these modifications and embellishments are also considered to be within the scope of the present invention.
Claims (8)
1. a kind of process for making shell of metal parts precision casting shell, which comprises the following steps:
S1: the wax model of part to be produced is suppressed using mold；
S2: compound crystal slurry is uniformly applied to after the wax model and uniformly sprinkles compound crystal sand on surface, is then carried out air-dried；
S3: it will not starch and uniformly sprinkle Mo Laisha on surface after being uniformly applied to the wax model, then carry out air-dried；
S4: repeating preset quantity time step S3, used in do not gradually decreased come the content of mullite powder in starching, what is used does not come
Sand is more and more thicker；Last time repeats not spread Mo Laisha when step S3；
S5: it is melted out the wax of shell interior with high-temperature steam；
S6: high-temperature roasting is carried out to shell with roaster.
2. a kind of process for making shell of metal parts precision casting shell according to claim 1, which is characterized in that in step
In S1:
It further include being cleaned using release agent to the wax model.
3. a kind of process for making shell of metal parts precision casting shell according to claim 1, which is characterized in that in step
In S2:
The compound crystal sand is mixed and is refined with metallic silicon and silicon carbide high temperature in electric arc using bauxite as primary raw material,
Its main component composition are as follows: Al2O3>=90%, SiO2≤ 5%, SiC≤3%.
4. a kind of process for making shell of metal parts precision casting shell according to claim 3, which is characterized in that in step
In S2:
The compound crystal slurry is that silica solution and compound crystal powder are mixed with the ratio of 1:2.8；The compound crystal sand is 100~120 purposes
Compound crystal sand；Air-dry environmental condition are as follows: wind speed be between 3~5m/s, and temperature is between 22~25 DEG C, humidity in 60~
Between 70%；Air-dry time is between 8-10 hours.
5. a kind of process for making shell of metal parts precision casting shell according to claim 1, which is characterized in that in step
In S3:
It is described not mixed to starch for silica solution and mullite powder with the ratio of 1:1.8；It is described do not come sand be 30~60 purposes not
Carry out sand；Air-dry environmental condition are as follows: wind speed is between 3~5m/s, and temperature is between 22~26 DEG C, and humidity is in 40-60%
Between；Air-dry time is no less than 8 hours.
6. a kind of process for making shell of metal parts precision casting shell according to claim 1, which is characterized in that in step
In S4:
It is repeated four times step S3, in which:
What repetition step S3 was used for the first time is not mixed to starch for silica solution and mullite powder with the ratio of 1:1.6；It uses
Not carrying out sand is that 30~60 purposes do not carry out sand；
What second of repetition step S3 was used is not mixed to starch for silica solution and mullite powder with the ratio of 1:1.5；It uses
Not carrying out sand is that 16~30 purposes do not carry out sand；
What third time repetition step S3 was used is not mixed to starch for silica solution and mullite powder with the ratio of 1:1.4；It uses
Not carrying out sand is that 16~30 purposes do not carry out sand；
What the 4th repetition step S3 was used is not mixed to starch for silica solution and mullite powder with the ratio of 1:1.3；It does not use
Mo Laisha；
Air-dry environmental condition are as follows: wind speed be between 3~5m/s, temperature between 22~27 DEG C, humidity be in 30-50% it
Between；Preceding air-dry time three times is no less than 8 hours, and the 4th air-dry time is no less than 6 hours.
7. a kind of process for making shell of metal parts precision casting shell according to claim 1, which is characterized in that in step
In S5:
The shell air-dried is placed in steam pressure and is in the range of 0.6~0.8MPa, vapor (steam) temperature in 170~180 DEG C
Wax is allowed to be melted out in the dewaxing kettle of range.
8. a kind of process for making shell of metal parts precision casting shell according to claim 1, which is characterized in that in step
In S6:
The temperature of high-temperature roasting continues 70~90 minutes between 1100~1200 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811417559.9A CN109261900B (en) | 2018-11-26 | 2018-11-26 | Shell manufacturing process for metal part precision casting shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811417559.9A CN109261900B (en) | 2018-11-26 | 2018-11-26 | Shell manufacturing process for metal part precision casting shell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109261900A true CN109261900A (en) | 2019-01-25 |
| CN109261900B CN109261900B (en) | 2020-12-29 |
Family
ID=65190714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811417559.9A Active CN109261900B (en) | 2018-11-26 | 2018-11-26 | Shell manufacturing process for metal part precision casting shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109261900B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109648046A (en) * | 2019-02-15 | 2019-04-19 | 福建立松金属工业有限公司 | Pump seat shell mold dewaxing roasting technique |
| CN115178708A (en) * | 2022-06-27 | 2022-10-14 | 惠州市棣华科技有限公司 | Precision casting shell and manufacturing process thereof |
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|---|---|---|---|---|
| CN86102002A (en) * | 1986-03-20 | 1986-09-10 | 沈阳工业学院 | Ludox, water glass composite shell |
| JPH0584539A (en) * | 1991-02-14 | 1993-04-06 | E I Du Pont De Nemours & Co | Annealing precision casting method and pattern material comprising thermally collapsible expanded micro globe |
| CN1453083A (en) * | 2003-05-19 | 2003-11-05 | 沈阳黎明航空发动机(集团)有限责任公司 | Manufacture of no-allowance molding shell for directional solidification casting |
| JP2005082889A (en) * | 2003-09-09 | 2005-03-31 | Akio Nishihara | Treatment method of toxic substance and hazardous substance |
| CN1683099A (en) * | 2005-02-02 | 2005-10-19 | 哈尔滨鑫润精铸工业有限公司 | Fine casting method for super long lower pressure partition guide blade of turbine in stainless steel investment mold |
| CN101168484A (en) * | 2006-10-26 | 2008-04-30 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for manufacturing casing of heavy combustion engine II-stage diverter blade |
| CN106345970A (en) * | 2016-08-29 | 2017-01-25 | 山西宇达青铜文化艺术股份有限公司 | Art casting silica sol and water glass compound shell making technique |
-
2018
- 2018-11-26 CN CN201811417559.9A patent/CN109261900B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102002A (en) * | 1986-03-20 | 1986-09-10 | 沈阳工业学院 | Ludox, water glass composite shell |
| JPH0584539A (en) * | 1991-02-14 | 1993-04-06 | E I Du Pont De Nemours & Co | Annealing precision casting method and pattern material comprising thermally collapsible expanded micro globe |
| CN1453083A (en) * | 2003-05-19 | 2003-11-05 | 沈阳黎明航空发动机(集团)有限责任公司 | Manufacture of no-allowance molding shell for directional solidification casting |
| JP2005082889A (en) * | 2003-09-09 | 2005-03-31 | Akio Nishihara | Treatment method of toxic substance and hazardous substance |
| CN1683099A (en) * | 2005-02-02 | 2005-10-19 | 哈尔滨鑫润精铸工业有限公司 | Fine casting method for super long lower pressure partition guide blade of turbine in stainless steel investment mold |
| CN101168484A (en) * | 2006-10-26 | 2008-04-30 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for manufacturing casing of heavy combustion engine II-stage diverter blade |
| CN106345970A (en) * | 2016-08-29 | 2017-01-25 | 山西宇达青铜文化艺术股份有限公司 | Art casting silica sol and water glass compound shell making technique |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109648046A (en) * | 2019-02-15 | 2019-04-19 | 福建立松金属工业有限公司 | Pump seat shell mold dewaxing roasting technique |
| CN115178708A (en) * | 2022-06-27 | 2022-10-14 | 惠州市棣华科技有限公司 | Precision casting shell and manufacturing process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109261900B (en) | 2020-12-29 |
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Denomination of invention: A shell making process for precision casting shell of metal parts Effective date of registration: 20231221 Granted publication date: 20201229 Pledgee: Industrial Bank Co.,Ltd. Huizhou Branch Pledgor: JIBANG PRECISION TECHNOLOGY CO.,LTD. Registration number: Y2023980072988 |
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