CN110976843A - Casting production process flow of turbine blade of gas turbine - Google Patents
Casting production process flow of turbine blade of gas turbine Download PDFInfo
- Publication number
- CN110976843A CN110976843A CN201911362394.4A CN201911362394A CN110976843A CN 110976843 A CN110976843 A CN 110976843A CN 201911362394 A CN201911362394 A CN 201911362394A CN 110976843 A CN110976843 A CN 110976843A
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- CN
- China
- Prior art keywords
- process flow
- turbine blade
- gas turbine
- production process
- casting production
- 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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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D47/00—Casting plants
- B22D47/02—Casting plants for both moulding and casting
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- 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
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- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/072—Treatment with gases
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses a casting production process flow of a turbine blade of a gas turbine, which comprises the following steps: the method comprises the following steps: manufacturing a mould; step two: preparing a shell; step three: preparing furnace burden; step four: and (5) carrying out subsequent processing to finish the finished turbine blade. Wherein in the second step, the liquid level of the gas turbine blade is frozen after the casting production process flow of the gas turbine blade is melted down and is filled by 10m3Argon protects molten steel, a preheated mould shell is placed in a vacuum furnace for 2 hours after vacuum breaking, the pouring temperature is kept at 1510 +/-5 ℃, the effect of full refining can be achieved, and the gas content of the molten steel is reduced.
Description
The technical field is as follows:
the invention relates to a casting production process flow of a turbine blade of a gas turbine, and belongs to the technical field of casting.
Background art:
turbine blades are the most demanding rotating parts of an aircraft gas turbine engine, subject to very complex stresses, temperatures and environmental conditions, and therefore have very strict requirements on dimensions and internal quality. The existing turbine blade casting production process has the following problems:
1. because of the high casting temperature, pores and impurities are easy to appear.
2. Early shelling, surface oxidation, cracking.
3. Short smelting time (64 min for mechanical property test bar and 43min for blade), insufficient refining and large gas content in the alloy. The casting temperature is high (the mechanical property test bar is 1560 ℃, the vane is 1603 ℃), and the shuttering temperature is low. The molten steel and the mold shell act violently to generate gas to prevent the molten steel from flowing to the thin wall, and the molten steel with large amount at the thick wall reacts with the mold shell more violently, so that a large amount of bubbles are wound, the molten steel is dispersed, cooling is accelerated, and pores are formed during solidification and are left in the steel.
Therefore, there is a need to improve the prior art to overcome the deficiencies of the prior art.
The invention content is as follows:
the invention provides a casting production process flow of a turbine blade of a gas turbine in order to solve the problems in the prior art.
The technical scheme adopted by the invention is as follows: a casting production process flow of a turbine blade of a gas turbine comprises the following steps:
the method comprises the following steps: manufacturing a mould;
step two: preparing a shell;
step three: preparing furnace burden;
step four: and (5) carrying out subsequent processing to finish the finished turbine blade.
Further, the process flow of the step one is as follows: wax 162# wax → molten wax → standing at 160 ℃ for 20 to 30 minutes for heat preservation, achieving the purpose of water removal and degassing → cooling to 140 ℃, filtering and removing impurities by a 140# sieve → stirring the mould material on the basis of cooling, mixing into paste, cooling to 90-100 ℃ → pressing → wax model trimming, removing flash and burr → wax model quality inspection → assembling qualified products in a tree → cleaning module.
Further, the process flow of the step two is as follows: preparing an abrasive → dipping a slurry coating, coating 7 layers of the coating with a sand consolidation layer, coating with a slurry coating, drying, naturally drying the first 3 layers, air-drying the later layers, drying, then transferring to dewaxing → shell mold roasting → shell mold cleaning and warehousing;
after melting down, freezing the liquid level, filling 10m3Argon protects molten steel, the vacuum is broken, a preheated mould shell is placed in a vacuum furnace for 2 hours, and the pouring temperature is kept at 1510 +/-5 ℃.
Further, fusion casting: shell preheating → vacuum melting furnace charge → temperature detection and chemical component spectroscopic analysis → pouring after chemical component adjustment and temperature qualification → heat preservation in the furnace for 10 minutes and then taking out → natural cooling for more than 8 hours → vibration shelling → rough shot blasting → cutting a dead head → quality inspection → grinding of a qualified product inner gate.
Further, the process flow of the step four is as follows: casting sand blowing → external surface and internal quality inspection → qualified product polishing → blade profile size detection → machining → blade size detection → qualified and then warehousing for sending.
The invention has the following beneficial effects: the liquid level of the casting production process flow of the turbine blade of the gas turbine is frozen after being melted down and is filled by 10m3Argon protects molten steel, a preheated mould shell is placed in a vacuum furnace for 2 hours after vacuum breaking, the pouring temperature is kept at 1510 +/-5 ℃, the effect of full refining can be achieved, and the gas content of the molten steel is reduced.
The specific implementation mode is as follows:
the invention relates to a casting production process flow of a turbine blade of a gas turbine, which comprises the following steps:
the method comprises the following steps: manufacturing a mould;
step two: preparing a shell;
step three: preparing furnace burden;
step four: and (5) carrying out subsequent processing to finish the finished turbine blade.
Wherein, the process flow of the step one is as follows: wax 162# wax → molten wax → standing at 160 ℃ for 20 to 30 minutes for heat preservation, achieving the purpose of water removal and degassing → cooling to 140 ℃, filtering and removing impurities by a 140# sieve → stirring the mould material on the basis of cooling, mixing into paste, cooling to 90-100 ℃ → pressing → wax model trimming, removing flash and burr → wax model quality inspection → assembling qualified products in a tree → cleaning module.
The process flow of the step two is as follows: preparing an abrasive → dipping a slurry coating, coating 7 layers of the coating with a sand consolidation layer, coating with a slurry coating, drying, naturally drying the first 3 layers, air-drying the later layers, drying, then transferring to dewaxing → shell mold roasting → shell mold cleaning and warehousing;
after melting down, freezing the liquid level, filling 10m3Argon protects molten steel, the vacuum is broken, a preheated mould shell is placed in a vacuum furnace for 2 hours, and the pouring temperature is kept at 1510 +/-5 ℃.
The process flow of the third step is as follows: casting: shell preheating → vacuum melting furnace charge → temperature detection and chemical component spectroscopic analysis → pouring after chemical component adjustment and temperature qualification → heat preservation in the furnace for 10 minutes and then taking out → natural cooling for more than 8 hours → vibration shelling → rough shot blasting → cutting a dead head → quality inspection → grinding of a qualified product inner gate.
The process flow of the step four is as follows: casting sand blowing → external surface and internal quality inspection → qualified product polishing → blade profile size detection → machining → blade size detection → qualified and then warehousing for sending.
The liquid level of the casting production process flow of the turbine blade of the gas turbine is frozen after being melted down and is filled by 10m3Argon protects molten steel, a preheated mould shell is placed in a vacuum furnace for 2 hours after vacuum breaking, the pouring temperature is kept at 1510 +/-5 ℃, the effect of full refining can be achieved, and the gas content of the molten steel is reduced.
The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.
Claims (5)
1. A casting production process flow of a turbine blade of a gas turbine is characterized in that: the method comprises the following steps:
the method comprises the following steps: manufacturing a mould;
step two: preparing a shell;
step three: preparing furnace burden;
step four: and (5) carrying out subsequent processing to finish the finished turbine blade.
2. A gas turbine blade casting production process as claimed in claim 1, wherein: the first process flow is as follows: wax 162# wax → molten wax → standing at 160 ℃ for 20 to 30 minutes for heat preservation, achieving the purpose of water removal and degassing → cooling to 140 ℃, filtering and removing impurities by a 140# sieve → stirring the mould material on the basis of cooling, mixing into paste, cooling to 90-100 ℃ → pressing → wax model trimming, removing flash and burr → wax model quality inspection → assembling qualified products in a tree → cleaning module.
3. A gas turbine blade casting production process as claimed in claim 2, wherein: the process flow of the step two is as follows: preparing an abrasive → dipping a slurry coating, coating 7 layers of the coating with a sand consolidation layer, coating with a slurry coating, drying, naturally drying the first 3 layers, air-drying the later layers, drying, then transferring to dewaxing → shell mold roasting → shell mold cleaning and warehousing;
after melting down, freezing the liquid level, filling 10m3Argon protects molten steel, the vacuum is broken, a preheated mould shell is placed in a vacuum furnace for 2 hours, and the pouring temperature is kept at 1510 +/-5 ℃.
4. A gas turbine blade casting production process as claimed in claim 3, wherein: the process flow of the third step is as follows: casting: shell preheating → vacuum melting furnace charge → temperature detection and chemical component spectroscopic analysis → pouring after chemical component adjustment and temperature qualification → heat preservation in the furnace for 10 minutes and then taking out → natural cooling for more than 8 hours → vibration shelling → rough shot blasting → cutting a dead head → quality inspection → grinding of a qualified product inner gate.
5. The gas turbine blade casting production process of claim 4, wherein: the process flow of the third step is as follows: the process flow of the step four is as follows: casting sand blowing → external surface and internal quality inspection → qualified product polishing → blade profile size detection → machining → blade size detection → qualified and then warehousing for sending.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911362394.4A CN110976843A (en) | 2019-12-26 | 2019-12-26 | Casting production process flow of turbine blade of gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911362394.4A CN110976843A (en) | 2019-12-26 | 2019-12-26 | Casting production process flow of turbine blade of gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110976843A true CN110976843A (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911362394.4A Pending CN110976843A (en) | 2019-12-26 | 2019-12-26 | Casting production process flow of turbine blade of gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110976843A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112719809A (en) * | 2020-12-24 | 2021-04-30 | 苏州工业园区星德胜电机有限公司 | Production process and installation method of large-inclination-angle turbine |
| CN114433787A (en) * | 2021-12-29 | 2022-05-06 | 泰钢合金(中山)有限公司 | Production method for reducing cracks of investment casting CK3MCuN super austenitic stainless steel |
-
2019
- 2019-12-26 CN CN201911362394.4A patent/CN110976843A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112719809A (en) * | 2020-12-24 | 2021-04-30 | 苏州工业园区星德胜电机有限公司 | Production process and installation method of large-inclination-angle turbine |
| CN114433787A (en) * | 2021-12-29 | 2022-05-06 | 泰钢合金(中山)有限公司 | Production method for reducing cracks of investment casting CK3MCuN super austenitic stainless steel |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211104 Address after: 214500 Dongxing Town Industrial Park, Jingjiang City, Taizhou City, Jiangsu Province Applicant after: JIANGSU HUAYE TECHNOLOGY CO.,LTD. Address before: 225300 Xingye Road, Hongqiao Industrial Park, Taixing, Taizhou City, Jiangsu Province Applicant before: Jiangsu haomaite New Material Technology Co.,Ltd. |
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| TA01 | Transfer of patent application right | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200410 |
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| WD01 | Invention patent application deemed withdrawn after publication |