CN102825436B - Method for machining small moving blade of turbine - Google Patents
Method for machining small moving blade of turbine Download PDFInfo
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- CN102825436B CN102825436B CN201210376467.7A CN201210376467A CN102825436B CN 102825436 B CN102825436 B CN 102825436B CN 201210376467 A CN201210376467 A CN 201210376467A CN 102825436 B CN102825436 B CN 102825436B
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Abstract
The invention relates to a method for machining a small moving blade of a turbine. The creative points of the invention are as follows: the method comprises the two steps of a blank material machining step and a blade machining step, wherein the blank material machining step specifically comprises the sub steps of: firstly forging a blank material, computing the quantity of consumed materials, and forging blanks into the blank material, wherein the width of the blank material is equal to the length of the blade, and the thickness of the blank material is equal to the width of the blade; milling the upper surface and the lower surface of the blank material according to sectional surfaces of an air inlet side surface A and an air outlet side surface B of the blade; carrying out finish-milling on the width of the blank material according to the length C of the blade; carrying out coarse-milling and finish-milling on the root D of the blade; and cutting the blank material into a plurality of blades according to the maximum outline of the blade; and the blade machining step specifically comprises the sub steps of: carrying out finish-milling on an inner arc of the blade; milling an back arc of a steam passage of the blade; carrying out the finish-milling on an assembly back arc of the blade; and placing into a library after passing the quality detection. Through the blank material machining step, the two side surfaces, the length and the root of each of the plurality of blades can be milled at the same time so that the method disclosed by the invention has the advantages of largely reducing the workload, reducing 1/3 of the workload compared with that by using the conventional process, and saving 1/3 of the raw materials compared with compared with that by using the conventional process, and also has a relatively high popularization value.
Description
Technical field
The present invention relates to a kind of Steam Turbines slice processing method, particularly the steam turbine petty action blade machining process of a kind of length within 80mm.
Background technology
Steam turbine blade is the blade rotated in company with rotor high-speed, realizes the power conversion between air-flow and rotor by the High Rotation Speed of blade.Moving vane bears very large mass inertial force, larger aerodynamic force and oscillating load.Therefore moving vane directly affects engine performance, reliability and the vital part in life-span.
Before in various model turbine blade, the general length of 4-5 level moving vane is no more than 80mm, and quantity accounts for greatly more than 30% of moving vane total amount.The petty action blade processing technique of current routine is as follows: first material is forged into the square bar material that can do two panels blade; Milling four directions; Milling overall length; Milling two ends blade root; Be sawn into two pieces; Milling blade tip; Pre-milling inner arc; Thick finish-milling inner arc; Milling steam passage profile; Pre-milling back of the body arc; Slightly, finish-milling back of the body arc; Total check-in storehouse.The process of this kind of process is many, wastes more material.
Summary of the invention
The technical problem to be solved in the present invention is to provide the high and steam turbine petty action blade machining process of material-saving of a kind of working (machining) efficiency.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of steam turbine petty action blade machining process, its innovative point is that described step is: be divided into blank to process and blade processing two benches, the blank process segment: first forging stock material, after calculating materials, blank forging is become blank, the width of blank is the length direction of blade, and the thickness of blank is the width of blade; According to the upper and lower surface of the profile milling blank of blade air inlet side, side of giving vent to anger; According to the width of length of blade milling preformed body; Slightly, finish-milling blade root; Blank is cut into some blades by the largest contours line according to blade; The blade processing stage: finish-milling blade concavity; Milling blade back arc of gas passageway; Finish-milling blade assernbling back of the body arc; Finally always examine warehousing after passing.
Further, carry out sampling in the blank process segment to blank to carry out impact flexibility, stretch and detect; Concrete sampling adopts horizontal sampling method, namely the major axis of sample and the width of blank consistent, make the major axis of this sample consistent with the major axis of final blade.
The invention has the advantages that: when processing little moving vane by operation of the present invention, the blank process segment can the simultaneously two sides of the some blades of milling, length and blade root, greatly reduce workload, the workload of processing reduces 1/3rd than common process, it uses material to save 1/3rd than common process method, has higher promotional value.
Accompanying drawing explanation
Fig. 1 is the blank top view after thick in the present invention, finish-milling blade root.
Fig. 2 is the blank side view after thick in the present invention, finish-milling blade root.
Fig. 3 is the blank front view of center line of the present invention cutting arc.
Detailed description of the invention
Blade of the present invention is divided into blank to process and blade processing two benches.
In the blank process segment: first forging stock material, after calculating materials, blank forging is become blank 1, the width of blank 1 is the length direction of blade, and the thickness of blank 1 is the width of blade; As shown in Figure 1, 2, 3, according to upper and lower surface A, the B of the profile milling blank of blade air inlet side, side of giving vent to anger; According to the width of length of blade C milling preformed body; Slightly, finish-milling blade root D; According to the largest contours line E Linear cut arc of blade, blank 1 is cut into some blades.
The blade processing stage: finish-milling blade concavity; Milling blade back arc of gas passageway; Finish-milling blade assernbling back of the body arc; Finally always examine warehousing after passing.
In the blank process segment, in order to ensure that the mechanical property of materials follows conventional method uniformity, by detecting its impact flexibility, stretching, during sampling, adopt horizontal sampling method, namely the major axis of sample and the width of blank consistent, make the major axis of this sample consistent with the major axis of final blade, guarantee that sample has good representativeness.Length is more than the blade of 80mm, and the duty due to blade is stressed larger, should not adopt above-mentioned steam turbine petty action blade machining process.
Claims (1)
1. a steam turbine petty action blade machining process, is characterized in that, the step of described method is: be divided into blank to process and blade processing two benches, the two sides of the some blades of milling, length and blade root the blank process segment while; In the blank process segment: first forging stock material, after calculating materials, blank forging is become blank, the width of blank is the length direction of blade, and the thickness of blank is the width of blade; According to the upper and lower surface of the profile milling blank of blade air inlet side, side of giving vent to anger; According to the width of length of blade milling preformed body; Slightly, finish-milling blade root; Blank is cut into some blades by the largest contours line according to blade; The blade processing stage: finish-milling blade concavity; Milling blade back arc of gas passageway; Finish-milling blade assernbling back of the body arc; Finally always examine warehousing after passing; Carry out sampling in the blank process segment to blank to carry out impact flexibility, stretch and detect; Concrete sampling adopts horizontal sampling method, namely the major axis of sample and the width of blank consistent, make the major axis of this sample consistent with the major axis of final blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210376467.7A CN102825436B (en) | 2012-10-08 | 2012-10-08 | Method for machining small moving blade of turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210376467.7A CN102825436B (en) | 2012-10-08 | 2012-10-08 | Method for machining small moving blade of turbine |
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| Publication Number | Publication Date |
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| CN102825436A CN102825436A (en) | 2012-12-19 |
| CN102825436B true CN102825436B (en) | 2015-04-22 |
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| CN201210376467.7A Active CN102825436B (en) | 2012-10-08 | 2012-10-08 | Method for machining small moving blade of turbine |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028917B (en) * | 2012-12-31 | 2014-12-03 | 四川绵竹鑫坤机械制造有限责任公司 | Machining process for low-pressure first-stage stationary blades of gas turbines |
| CN104308481B (en) * | 2014-10-27 | 2017-01-11 | 西安航空动力股份有限公司 | Stator blade machining method of aeroengine compressor without mounting plate |
| CN105081710B (en) * | 2015-07-30 | 2017-05-03 | 南通中能机械制造有限公司 | Production technology for motor aluminum fan blade |
| CN105081691B (en) * | 2015-07-30 | 2017-09-19 | 南通中能机械制造有限公司 | Diamond shaped tooth form circular-arc roots of vanes movable vane slice processing method |
| CN105127697A (en) * | 2015-09-30 | 2015-12-09 | 四川绵竹鑫坤机械制造有限责任公司 | Processing method of lengthened inlet guide vane of combustion gas turbine |
| CN106077387B (en) * | 2016-06-27 | 2018-08-14 | 泰尔重工股份有限公司 | A kind of forging method of LD steel cylinder blade |
| CN108705269B (en) * | 2018-06-05 | 2021-07-06 | 山东豪迈机械科技股份有限公司 | Method for processing blade for tire pattern forming |
| CN112025228A (en) * | 2020-08-18 | 2020-12-04 | 南通中能机械制造有限公司 | Machining process of seventh-stage moving blade |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88101214A (en) * | 1987-03-12 | 1988-09-21 | 阿尔斯汤姆有限公司 | The moving blading of steam turbine |
| CN1810427A (en) * | 2005-01-28 | 2006-08-02 | 三星Techwin株式会社 | Method and apparatus for electric-discharge machining of a turbine blade |
| CN101285404A (en) * | 2008-06-03 | 2008-10-15 | 东方电气集团东方汽轮机有限公司 | Steam turbine rotor blades cover band structure and its machining process |
| CN101786237A (en) * | 2009-12-29 | 2010-07-28 | 东方电气集团东方汽轮机有限公司 | Fixture used for processing small moving blade in turbine and processing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040009437A (en) * | 2002-07-23 | 2004-01-31 | 현대모비스 주식회사 | Method of manufacturing turbine blade using symmetrically electric discharge method for turbo pump |
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2012
- 2012-10-08 CN CN201210376467.7A patent/CN102825436B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88101214A (en) * | 1987-03-12 | 1988-09-21 | 阿尔斯汤姆有限公司 | The moving blading of steam turbine |
| CN1810427A (en) * | 2005-01-28 | 2006-08-02 | 三星Techwin株式会社 | Method and apparatus for electric-discharge machining of a turbine blade |
| CN101285404A (en) * | 2008-06-03 | 2008-10-15 | 东方电气集团东方汽轮机有限公司 | Steam turbine rotor blades cover band structure and its machining process |
| CN101786237A (en) * | 2009-12-29 | 2010-07-28 | 东方电气集团东方汽轮机有限公司 | Fixture used for processing small moving blade in turbine and processing method thereof |
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| CN102825436A (en) | 2012-12-19 |
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