CN100540208C - A kind of renovation technique of centrifugal compressor runner blade - Google Patents
A kind of renovation technique of centrifugal compressor runner blade Download PDFInfo
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- CN100540208C CN100540208C CN 200610134960 CN200610134960A CN100540208C CN 100540208 C CN100540208 C CN 100540208C CN 200610134960 CN200610134960 CN 200610134960 CN 200610134960 A CN200610134960 A CN 200610134960A CN 100540208 C CN100540208 C CN 100540208C
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Abstract
The invention provides a kind of renovation technique of centrifugal compressor runner blade, is that the impeller 1 that is contained on the armature spindle 2 integrally carries out, and is made up of following operation: the 1. detection of rotor, detect rotor and size detection at the enterprising line bounce of lathe; 2. blade is repaired the making of frock 7, comprises front plate 71, rear plate 72, fastening bolt 73 and carrying bolt 74; 3. the laser melting coating of damage location, technological parameter is: laser power 1200～2000W, spot diameter 2～6mm, hot spot translational speed 2～20mm/s along the runner damage field, carries out the hot spot scanning and irradiation, cladding bed thickness 1～3mm; 4. compressor runner blade 13 complex adopt straight grinder with blade 13 cladding position corrections of the flank shape; 5. the dynamic balance check of rotor, with the rotor after repairing at the enterprising action balance check of dynamic balancing machine.The advantage of this technology is: can not dismantle impeller, not do reparation heat treatment, easy and simple to handle, reparation speed is fast, and adaptability is strong, can realize automation.
Description
Technical field
The present invention relates to the maintenance technique of centrifugal compressor runner blade, a kind of renovation technique that utilizes laser melting and coating technique to repair centrifugal compressor runner blade is provided especially.
Background technology
The centrifugal compressor rotor is its accuracy class height of key equipment in the shop equipment, complex manufacturing technology, and the production cost height, the cycle is long, and in case its influence that goes wrong of being in operation is huge, its quality requirement is all than higher.Because the operating temperature of rotor, rotating speed is all very high, so require material that higher creep limit, good creep rupture strength and thermal fatigue resistance and fracture property are preferably arranged.The unit that capacity is big more, the requirement of these technical indicators is just strong more.Such rotor is because of its rotating speed height, and the industrial and mineral inclement condition because of the factor blades such as impurity in the gas very easily wear and tear, causes rotor power to descend in running, and balance is destroyed, influences the normal operation of equipment.
For the manufacture process of rotor from smelting, forging, the machine of material add, operation such as heat treatment, dynamic balancing all has clear and definite, strict quality requirement.So the manufacturing cost of rotor is very high, the manufacturing cycle is also very long.Therefore, be in operation, in a single day rotor goes wrong, and its consequence formula is very serious.If make again, all be that the user is unaffordable from the duration to the cost.Therefore, must take certain mode to keep in repair.But no matter be various thermal processing methods such as electric welding, argon arc welding, vibration weldering, the capital inevitably produces injurious effects such as distortion, crackle, heat affected area tissue inter-variable, residual stress, and causing using on equipment part important, that precision is high has great limitation.
The way reparation of electric welding or thermal spraying is generally adopted in the damage of compressor runner blade in the past.These two kinds of methods all have bigger defective.
Compressor runner blade is repaired in electric welding, and its heat affected area is big, very easily produces distortion, and the weld zone organizes crystal grain thick, and there is very big internal stress in intensity difference.
Hot-spraying technique is repaired compressor runner blade, and anchoring strength of coating is low, very easily comes off, and can't repair damaging big compressor runner blade.
Summary of the invention
The object of the present invention is to provide a kind of renovation technique that utilizes laser melting and coating technique to repair centrifugal compressor runner blade 13 abrading sections.
The invention provides a kind of renovation technique of centrifugal compressor runner blade, it is characterized in that: be that rotor (being contained in the impeller 1 on the armature spindle 2) integrally carries out, form by following operation:
1. the detection of rotor detects rotor and size detection at the enterprising line bounce of lathe, and Fig. 1 is seen at glitch detection position 5 and size detection position 6;
2. blade is repaired the making of frock 7, comprises front plate 71, rear plate 72, fastening bolt 73 and carrying bolt 74; Front plate 71, rear plate 72 and fastening bolt 73 combine and ensure that front shroud of impeller 11 and back shroud of impeller 12 can not expand outwardly distortion, carrying bolt 74 ensures that (see figure 2) can not take place inwardly to shrink for front shroud of impeller 11 and back shroud of impeller 12, to guarantee the cladding quality.
3. the laser melting coating of damage location, technological parameter is:
Laser power 1200～2000W,
Hot spot translational speed 2～20mm/s,
Along the runner damage field, carry out the hot spot scanning and irradiation, cladding bed thickness 1～3mm;
4. compressor runner blade 13 complex adopt straight grinder with blade 13 cladding position corrections of the flank shape, recover the life size form;
5. the dynamic balance check of rotor at the enterprising action balance check of dynamic balancing machine, makes its amount of unbalance reach designing requirement the rotor after repairing.
The renovation technique of centrifugal compressor runner blade provided by the invention, the laser melting coating of its damage location adopts the mode that presets cladding material.
The renovation technique of centrifugal compressor runner blade provided by the invention, the cladding layer of the laser melting coating of its damage location is made of nickel-base alloy bottom and/or cobalt-base alloys surface layer.
The renovation technique of centrifugal compressor runner blade provided by the invention, its advantage is: can not dismantle impeller 1, not do reparation heat treatment, easy and simple to handle, reparation speed is fast, and adaptability is strong, can realize automation; Compressor runner blade thermal deformation after the reparation is little, weld structure is even, and residual stress is little, and performance is better than other method, and rotor matrix does not have distortion, defectives such as flawless, slag inclusion, and the security and the serviceability of rotor increase substantially, and economic effect is obvious.
Description of drawings
Fig. 1 detects for rotor;
Fig. 2 is for repairing the frock schematic diagram.
The specific embodiment
The reparation of embodiment 1 D1400-33 centrifugal compressor blade
About 3.5 tons of rotor weight, length is 4m, maximum rotating diameter (exhaust stage blade) 1.4m, 5600 rev/mins of rotor speeds, blade 13 material 2Cr13, rotor blade 13 sheet erosion attenuates, maximum lesion depths is that the above also many places of 1mm exist crackle.
1. the detection of rotor detects the chuck 3 and the top 4 enterprising line bounces of rotor at lathe and size detection, and Fig. 1 is seen at glitch detection position 5 and size detection position 6;
2. blade 13 is repaired the making of frock, comprises front plate 71, rear plate 72, fastening bolt 73 and carrying bolt 74; Front plate 71, rear plate 72 and fastening bolt 73 combine and ensure that front shroud of impeller 11 and back shroud of impeller 12 can not expand outwardly distortion, carrying bolt 74 is a stud, directly withstand on the front and rear cover plate inwall, ensure that inside contraction (seeing accompanying drawing 2) can not take place for front shroud of impeller 11 and back shroud of impeller 12, to guarantee the cladding quality.
3. the laser melting coating of damage location, technological parameter is:
Laser power 2000W,
Spot diameter 5mm,
Hot spot translational speed 20mm/s,
The mode of cladding material Co-based alloy powder is preset in employing, and the composition of nickel-base alloy is, percentage by weight, and Cr15～30, Mo2～6, W2～10, surplus are Ni.
Along the runner damage field, carry out the hot spot scanning and irradiation, cladding bed thickness 3mm;
4. compressor runner blade 13 complex adopt straight grinder with blade 13 cladding position corrections of the flank shape, recover the life size form;
5. the dynamic balance check of rotor at the enterprising action balance check of dynamic balancing machine, makes its amount of unbalance reach designing requirement the rotor after repairing.
Through various tests, its hardness number reaches HB250～280 that former blade 13 hardness require, and nondestructive inspection detects does not have defectives such as hole, slag inclusion, crackle.The Metallographic Analysis result, cladding layer is organized as fine and close austenite structure.Running through the time more than 1 year does not come off, bad phenomenon such as peeling produces, and works well.
The reparation of embodiment 2 D900 centrifugal compressor blades
About 1.8 tons of rotor weight, length is 3m, 8200 rev/mins of rotor speeds, blade 13 material 1Cr17Ni4Cu4Nb, its damage width 80mm, maximum lesion depths is more than the 1mm.
1. the detection of rotor detects the chuck 3 and the top 4 enterprising line bounces of rotor at lathe and size detection, and Fig. 1 is seen at glitch detection position 5 and size detection position 6;
2. blade 13 is repaired the making of frock, comprises front plate 71, rear plate 72, fastening bolt 73 and carrying bolt 74; Front plate 71, rear plate 72 and fastening bolt 73 combine and ensure that front shroud of impeller 11 and back shroud of impeller 12 can not expand outwardly distortion, carrying bolt 74 is a stud, directly withstand on the front and rear cover plate inwall, ensure that inside contraction (seeing accompanying drawing 2) can not take place for front shroud of impeller 11 and back shroud of impeller 12, to guarantee the cladding quality.
3. the laser melting coating of damage location, technological parameter is:
Laser power 1800W,
Spot diameter 3mm,
Hot spot translational speed 10mm/s,
The mode of cladding material cobalt-base alloys is preset in employing.
Along the runner damage field, carry out the hot spot scanning and irradiation, cladding bed thickness 2mm;
4. compressor runner blade 13 complex adopt straight grinder with blade 13 cladding position corrections of the flank shape, recover the life size form;
5. the dynamic balance check of rotor at the enterprising action balance check of dynamic balancing machine, makes its amount of unbalance reach designing requirement the rotor after repairing.
Qualified by inspection.Through various tests, its hardness number reaches HB360～380 that former blade 13 hardness require, and nondestructive inspection detects does not have defectives such as hole, slag inclusion, crackle.The Metallographic Analysis result, cladding layer is organized as fine and close austenite structure.Running through the time more than 1 year does not come off, bad phenomenon such as peeling produces, and works well.
Claims (3)
1, a kind of renovation technique of centrifugal compressor runner blade is characterized in that: be that the impeller (1) that is contained on the armature spindle (2) integrally carries out, be made up of following operation:
1. the detection of rotor detects rotor and size detection at the enterprising line bounce of lathe;
2. blade is repaired the making of frock (7), comprises front plate (71), rear plate (72), fastening bolt (73) and carrying bolt (74);
3. the laser melting coating of damage location, technological parameter is:
Laser power 1200～2000W,
Spot diameter 2～6mm,
Hot spot translational speed 2～20mm/s,
Along the runner damage field, carry out the hot spot scanning and irradiation, cladding bed thickness 1～3mm;
4. compressor runner blade (13) complex adopts straight grinder with blade (13) cladding position correction of the flank shape, recovers the life size form;
5. the dynamic balance check of rotor, with the rotor after repairing at the enterprising action balance check of dynamic balancing machine.
2, according to the renovation technique of the described centrifugal compressor runner blade of claim 1, it is characterized in that: the laser melting coating of described damage location adopts the mode that presets cladding material.
3, according to the renovation technique of the described centrifugal compressor runner blade of claim 1, it is characterized in that: the cladding layer of the laser melting coating of described damage location is made of nickel-base alloy bottom and/or cobalt-base alloys surface layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610134960 CN100540208C (en) | 2006-12-22 | 2006-12-22 | A kind of renovation technique of centrifugal compressor runner blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610134960 CN100540208C (en) | 2006-12-22 | 2006-12-22 | A kind of renovation technique of centrifugal compressor runner blade |
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| CN101204768A CN101204768A (en) | 2008-06-25 |
| CN100540208C true CN100540208C (en) | 2009-09-16 |
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| CN 200610134960 Expired - Fee Related CN100540208C (en) | 2006-12-22 | 2006-12-22 | A kind of renovation technique of centrifugal compressor runner blade |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101829968B (en) * | 2010-04-29 | 2012-02-08 | 中国燃气涡轮研究院 | High-speed dynamic balance jig and dynamic balance adjusting method thereof |
| CN102453908B (en) * | 2010-11-02 | 2014-08-20 | 沈阳大陆激光技术有限公司 | Repairing technology of metallurgy TRT unit bearing cylinder |
| CN103357988B (en) * | 2012-03-31 | 2015-11-04 | 哈尔滨电机厂有限责任公司 | Axle class Precision Machining part damage defect welding repair method |
| ITCO20120041A1 (en) * | 2012-09-07 | 2014-03-08 | Nuovo Pignone Spa | METHOD FOR REPAIRING A TURBOMACHINE COMPONENT |
| CN103526201A (en) * | 2013-10-30 | 2014-01-22 | 辽宁思达思克实业有限公司 | De-coiler machine shearing blade reparation and strengthening laser cladding method |
| CN105127663B (en) * | 2015-08-24 | 2017-10-24 | 武汉理工大学 | A kind of boiler mill exhauster impeller remanufactures technique |
| CN105252201B (en) * | 2015-10-19 | 2017-06-30 | 中航湖南通用航空发动机有限公司 | A kind of unqualified rescue method of dynamic balancing of essence casting integral power turbine wheel |
| CN105290707B (en) * | 2015-12-04 | 2017-10-13 | 玉溪大红山矿业有限公司 | A kind of repeatable restorative procedure of tank diameter impeller |
| EP3282130A1 (en) * | 2016-08-10 | 2018-02-14 | Siemens Aktiengesellschaft | Layer system, impeller, method to produce |
| CN106938381A (en) * | 2017-05-09 | 2017-07-11 | 登电集团新玉煤矿有限公司 | Coal winnowing machine fan blade restorative procedure |
| CN110900105A (en) * | 2019-11-21 | 2020-03-24 | 浙江翰德圣智能再制造技术有限公司 | Method for repairing worn impeller of pulper |
| CN114682988B (en) * | 2022-02-25 | 2024-05-24 | 郑州煤机综机设备有限公司 | Repairing method of high-hardness high-corrosion-resistance hydraulic support hinge shaft |
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2006
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