CN112496478A - Precision electrolysis method for double-shaft neck stator blade profile - Google Patents
Precision electrolysis method for double-shaft neck stator blade profile Download PDFInfo
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- CN112496478A CN112496478A CN202011265311.2A CN202011265311A CN112496478A CN 112496478 A CN112496478 A CN 112496478A CN 202011265311 A CN202011265311 A CN 202011265311A CN 112496478 A CN112496478 A CN 112496478A
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- blade
- electrolysis
- electrolyte
- precision
- double
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- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 24
- 238000003754 machining Methods 0.000 claims abstract description 19
- 239000003792 electrolyte Substances 0.000 claims description 18
- 238000012144 step-by-step procedure Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000005520 cutting process Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
- B23H9/10—Working turbine blades or nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H2600/00—Machining conditions
- B23H2600/10—Switching of machining conditions during machining
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention belongs to the technical field of precision electrolysis, and particularly relates to a precision electrolysis method for a double-journal stator blade profile. The technical scheme of the invention is as follows: a precision electrolysis method for a double-journal stator blade profile comprises the following steps: 1) clamping the blade; 2) setting an electrolytic machine tool; 3) blank parameters; 4) an electrolysis process; 5) and (4) vibrating and electrolyzing. The precise electrolysis method for the double-journal stator blade profile provided by the invention realizes one-time fine machining of the blade body profile by an electrolysis technology, ensures the machining precision, reduces the machining time and saves the machining cost.
Description
Technical Field
The invention belongs to the technical field of precision electrolysis, and particularly relates to a precision electrolysis method for a double-journal stator blade profile.
Background
The double-journal stator blade is a common part of an aeroengine, and the finish machining of the blade body profile of the double-journal stator blade is usually realized by adopting a numerical control milling process and needs a multi-coordinate and high-precision numerical control machine tool for machining. Because the material is high-temperature alloy, a high-quality numerical control cutter needs to be selected, and the consumption is large. In order to reduce the stress generated by the blade during the cutting process, a smaller cutting amount is generally adopted, which results in a longer time required for machining the blade. In addition, the processing trace of the milled blade profile needs to be ground by a numerical control abrasive belt grinding machine, so that the equipment investment and the processing time are increased.
Disclosure of Invention
The invention provides a precise electrolysis method for a double-journal stator blade profile, which is used for realizing one-time finish machining of a blade body profile by an electrolysis technology, ensuring the machining precision, reducing the machining time and saving the machining cost.
The technical scheme of the invention is as follows:
a precision electrolysis method for a double-journal stator blade profile comprises the following steps:
1) clamping the blade; the large-end shaft neck of the blade is positioned and clamped by a spring jacket, and the angular position of the blade is controlled; the small end journal of the blade adopts auxiliary clamping; the big end journal and the small end journal of the blade are both connected with the anode of the electrolytic machine tool;
2) setting an electrolytic machine tool; the electrolyte is NaNO with the concentration of 6-15%3The flow pressure of the electrolyte is 5-8Bar, and the flow mode of the electrolyte is that the blade exhaust side flows in and the blade intake side flows out;
3) blank parameters; the initial machining allowance of the blade blank is 0.40-0.80mm on one side, and the thickness difference variation is not more than 0.15 mm;
4) an electrolysis process; the electrolysis process comprises 6-9 step-by-step procedures, the electrode feeding amount is 0.1-0.5mm, and the electrode feeding amount of each step-by-step procedure is reduced in sequence;
5) vibrating electrolysis; when the gap between the electrode and the blade is 0.4-0.6mm, the electrolysis machine starts to vibrate until the electrolysis process is finished.
Further, in the double-journal stator blade profile precise electrolysis method, the flow pressure of the electrolyte is 6-8Bar in a non-vibration electrolysis state in the electrolysis process; when the electrolytic state is vibrated in the electrolytic process, the flowing pressure of the electrolyte is 5-7 Bar.
The invention has the beneficial effects that: the invention realizes one-time fine machining of the blade profile by an electrolysis technology, ensures the machining precision, reduces the machining time and saves the machining cost.
Detailed Description
Example 1
The precise electrolysis method for the double-journal stator blade profile comprises the following steps:
1) clamping the blade; the large-end shaft neck of the blade is positioned and clamped by a spring jacket, and the angular position of the blade is controlled; the small end journal of the blade adopts auxiliary clamping; the big end journal and the small end journal of the blade are both connected with the anode of the electrolytic machine tool; the electrolytic machine is a PO100SF precision electrolytic machine of Eemark (EMAG) company of Germany;
2) setting an electrolytic machine tool; the electrolyte is NaNO with the concentration of 10%3The electrolyte flows in a mode of flowing into the blade exhaust side and flowing out of the blade inlet side;
3) blank parameters; the initial machining allowance of the blade blank is 0.45-0.60mm of a single side;
4) an electrolysis process; the electrolysis process comprises 6 step procedures, and the electrode feeding amount is reduced from 0.4mm to 0.1mm in sequence;
5) vibrating electrolysis; when the gap between the electrode and the blade is 0.4, starting the electrolysis machine tool to vibrate until the electrolysis process is finished; when the electrolysis process is in a non-vibration electrolysis state, the flowing pressure of the electrolyte is 7 Bar; when the electrolytic state is vibrated in the electrolytic process, the flowing pressure of the electrolyte is 5 Bar.
Example 2
The precise electrolysis method for the double-journal stator blade profile comprises the following steps:
1) clamping the blade; the large-end shaft neck of the blade is positioned and clamped by a spring jacket, and the angular position of the blade is controlled; the small end journal of the blade adopts auxiliary clamping; the big end journal and the small end journal of the blade are both connected with the anode of the electrolytic machine tool; the electrolytic machine is a PO100SF precision electrolytic machine of Eemark (EMAG) company of Germany;
2) setting an electrolytic machine tool; the electrolyte is NaNO with the concentration of 15%3The electrolyte flows in a mode of flowing into the blade exhaust side and flowing out of the blade inlet side;
3) blank parameters; the initial machining allowance of the blade blank is 0.6-0.75mm of a single side;
4) an electrolysis process; the electrolysis process comprises 9 step procedures, and the electrode feeding amount is reduced from 0.6mm to 0.1mm in sequence;
5) vibrating electrolysis; when the gap between the electrode and the blade is 0.5, starting the electrolysis machine tool to vibrate until the electrolysis process is finished; when the electrolysis process is in a non-vibration electrolysis state, the flowing pressure of the electrolyte is 8 Bar; when the electrolytic state is vibrated in the electrolytic process, the flowing pressure of the electrolyte is 5 Bar.
Claims (2)
1. A precision electrolysis method for a profile of a biaxial neck type stator blade is characterized by comprising the following steps:
1) clamping the blade; the large-end shaft neck of the blade is positioned and clamped by a spring jacket, and the angular position of the blade is controlled; the small end journal of the blade adopts auxiliary clamping; the big end journal and the small end journal of the blade are both connected with the anode of the electrolytic machine tool;
2) setting an electrolytic machine tool; the electrolyte is NaNO with the concentration of 6-15%3The flow pressure of the electrolyte is 5-8Bar, and the flow mode of the electrolyte is that the blade exhaust side flows in and the blade intake side flows out;
3) blank parameters; the initial machining allowance of the blade blank is 0.40-0.80mm on one side, and the thickness difference variation is not more than 0.15 mm;
4) an electrolysis process; the electrolysis process comprises 6-9 step-by-step procedures, the electrode feeding amount is 0.1-0.5mm, and the electrode feeding amount of each step-by-step procedure is reduced in sequence;
5) vibrating electrolysis; when the gap between the electrode and the blade is 0.4-0.6mm, the electrolysis machine starts to vibrate until the electrolysis process is finished.
2. The method for the precision electrolysis of a double-journal type stator blade profile according to claim 1, wherein the flow pressure of the electrolyte is 6-8Bar in a non-vibrating electrolysis state during the electrolysis process; when the electrolytic state is vibrated in the electrolytic process, the flowing pressure of the electrolyte is 5-7 Bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011265311.2A CN112496478A (en) | 2020-11-13 | 2020-11-13 | Precision electrolysis method for double-shaft neck stator blade profile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011265311.2A CN112496478A (en) | 2020-11-13 | 2020-11-13 | Precision electrolysis method for double-shaft neck stator blade profile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112496478A true CN112496478A (en) | 2021-03-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011265311.2A Pending CN112496478A (en) | 2020-11-13 | 2020-11-13 | Precision electrolysis method for double-shaft neck stator blade profile |
Country Status (1)
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Citations (9)
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|---|---|---|---|---|
| CN101249577A (en) * | 2008-03-07 | 2008-08-27 | 南京航空航天大学 | Active control type electrolysing solution flowing method in blade process and electrolysing solution circulating system |
| CN101502901A (en) * | 2009-03-10 | 2009-08-12 | 南京航空航天大学 | Thin electrode for electrolytic machining of integral wheel |
| WO2014189401A1 (en) * | 2013-05-20 | 2014-11-27 | Общество С Ограниченной Ответственностью "Есм" | Device for electrochemical machining using a vibrating electrode tool |
| CN104404613A (en) * | 2014-08-15 | 2015-03-11 | 中国航空工业集团公司沈阳发动机设计研究所 | Forming method of metal edge of composite's vane |
| CN106363374A (en) * | 2016-11-16 | 2017-02-01 | 贵州黎阳航空动力有限公司 | Numerical control processing method and device for complex molded surface of rotor blade of air compressor |
| CN106513883A (en) * | 2016-11-29 | 2017-03-22 | 沈阳黎明航空发动机(集团)有限责任公司 | Blade profile precision electrolytic molding electrode and processing method |
| US20170274451A1 (en) * | 2014-10-24 | 2017-09-28 | Siemens Aktiengesellschaft | Electrochemical machining inner contours of gas turbine engine components |
| CN107962260A (en) * | 2017-11-23 | 2018-04-27 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of blade blank design method for Electrolyzed Processing |
| CN111081480A (en) * | 2019-12-25 | 2020-04-28 | 湖南博信新能源科技有限公司 | Electrolyte pressure adjusting device |
-
2020
- 2020-11-13 CN CN202011265311.2A patent/CN112496478A/en active Pending
Patent Citations (9)
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|---|---|---|---|---|
| CN101249577A (en) * | 2008-03-07 | 2008-08-27 | 南京航空航天大学 | Active control type electrolysing solution flowing method in blade process and electrolysing solution circulating system |
| CN101502901A (en) * | 2009-03-10 | 2009-08-12 | 南京航空航天大学 | Thin electrode for electrolytic machining of integral wheel |
| WO2014189401A1 (en) * | 2013-05-20 | 2014-11-27 | Общество С Ограниченной Ответственностью "Есм" | Device for electrochemical machining using a vibrating electrode tool |
| CN104404613A (en) * | 2014-08-15 | 2015-03-11 | 中国航空工业集团公司沈阳发动机设计研究所 | Forming method of metal edge of composite's vane |
| US20170274451A1 (en) * | 2014-10-24 | 2017-09-28 | Siemens Aktiengesellschaft | Electrochemical machining inner contours of gas turbine engine components |
| CN106363374A (en) * | 2016-11-16 | 2017-02-01 | 贵州黎阳航空动力有限公司 | Numerical control processing method and device for complex molded surface of rotor blade of air compressor |
| CN106513883A (en) * | 2016-11-29 | 2017-03-22 | 沈阳黎明航空发动机(集团)有限责任公司 | Blade profile precision electrolytic molding electrode and processing method |
| CN107962260A (en) * | 2017-11-23 | 2018-04-27 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of blade blank design method for Electrolyzed Processing |
| CN111081480A (en) * | 2019-12-25 | 2020-04-28 | 湖南博信新能源科技有限公司 | Electrolyte pressure adjusting device |
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Application publication date: 20210316 |