CN107470851A - Universal pitot tube pump nozzle wear or fracture cold metal transfer welding repair method - Google Patents
Universal pitot tube pump nozzle wear or fracture cold metal transfer welding repair method Download PDFInfo
- Publication number
- CN107470851A CN107470851A CN201710706785.8A CN201710706785A CN107470851A CN 107470851 A CN107470851 A CN 107470851A CN 201710706785 A CN201710706785 A CN 201710706785A CN 107470851 A CN107470851 A CN 107470851A
- Authority
- CN
- China
- Prior art keywords
- pitot tube
- welding
- nozzle
- metal transfer
- cold metal
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/002—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating specially adapted for particular articles or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/06—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of high energy impulses, e.g. magnetic energy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/04—Repairing fractures or cracked metal parts or products, e.g. castings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention belongs to the general Pitot tube centrifugal pump of petrochemical industry to repair field, is related to a kind of universal pitot tube pump nozzle wear or fracture cold metal transfer welding repair method.This method comprises the following steps：(1) according to the damaged condition of Pitot tube nozzle, the recovery scenario of nozzle is determined；(2) sealing opening ring of abrasion is looked for into machining benchmark, makes frock；(3) damage Pitot tube nozzle outlet end is removed, processes welding groove；(4) according to the new nozzle outlet end blank of mapping drawing making；(5) new nozzle outlet end and original axle are coordinated；(6) cold metal transfer welds；(7) overlay cladding goes de-stress；(8) welding tooling is removed, is finished, drilling.Use of the present invention will damage output end and remove, and re-work a blank, be assembled together with original nozzle outlet end, using cold metal transfer welding method, then re-work original size, so as to recover the performance of the pitot tube pump nozzle.
Description
Technical field
The invention belongs to the general Pitot tube centrifugal pump of petrochemical industry to repair field, is related to a kind of universal pitot tube pump nozzle
Abrasion or fracture cold metal transfer welding repair method.
Background technology
Pitot tube pump is a kind of medium-small flow, high-lift infant industry centrifugal pump, is widely used in petroleum chemical industry.
The pump only has one stage impeller, simple in construction, and rotating speed is relatively low, service life length, and maintenance cost is low.Pitot tube pump is by rotor, Pi Tuo
The parts such as pipe nozzle, bearing holder component, shell body and disengaging liquid pipe form, and the pump case forms the housing for rotary components,
The rotary components are around stationary pitot tube nozzle.For normal, static Pitot tube nozzle is not allow rapid wear in use
Bad, the main attrition component of the pump is sealing ring, can just cause rotation housing eccentric vibrating big after sealing ring damage, cause nozzle
Failure.Pitot tube nozzle is the passage of pumped (conveying) medium, once damage will bring fatal harm to pitot tube pump.
The content of the invention
The defects of in order to overcome prior art, it is an object of the invention to provide a kind of universal pitot tube pump nozzle wear
Or fracture cold metal transfer welding repair method, this method, which is directed to Pitot tube nozzle in During Process of Long-term Operation, to be occurred wearing and is broken
Part repaired.
In order to solve the above-mentioned technical problem, technical scheme is as follows：
A kind of universal pitot tube pump nozzle wear or fracture cold metal transfer welding repair method, comprise the following steps：
(1) according to the damaged condition of Pitot tube nozzle, the recovery scenario of nozzle is determined；
(2) sealing opening ring of abrasion is looked for into machining benchmark, makes frock；
(3) damage Pitot tube nozzle outlet end is removed, processes welding groove；
(4) according to the new nozzle outlet end blank of mapping drawing making；
(5) new nozzle outlet end and original axle are coordinated；
(6) welded using high energy pulse cold welding and cold metal transfer；
(7) overlay cladding goes de-stress；
(8) welding tooling is removed, is finished, drilling.
Described universal pitot tube pump nozzle wear or fracture cold metal transfer welding repair method, in step (1), spray
Mouth is disassembled out in pitot tube pump, and after alcohol washes, it is surveyed and drawn first, then carry out crackle, surface defect,
The dimensional accuracy inspection of each related axle journal, mating surface, to determine recovery scenario.
Described universal pitot tube pump nozzle wear or fracture cold metal transfer welding repair method, in step (2),
The sealing opening ring of abrasion is looked for into machining benchmark first, solid pole blank is welded on blade, according to original machining benchmark, is added
Work blank, become the follow-up machining benchmark of Pitot tube nozzle.
Described universal pitot tube pump nozzle wear or fracture cold metal transfer welding repair method, will in step (3)
Pitot tube nozzle is arranged on lathe, and by 40~50mm of diameter of damage, the long direct turning in 40~60mm end faces is fallen, processing welding
Groove.
Described universal pitot tube pump nozzle wear or fracture cold metal transfer welding repair method, in step (4), car
Machining blanks, it is machined to size requirement.
Described universal pitot tube pump nozzle wear or fracture cold metal transfer welding repair method, will in step (5)
The blank processed is corresponding with original a diameter of 30~35mm passage, and both ends mating surface is assembled, and is assembled to original
Overall dimensions, reserve welding groove.
Described universal pitot tube pump nozzle wear or fracture cold metal transfer welding repair method, in step (6), adopt
Sealing opening ring fray is repaired with the method for high energy pulse cold welding, welding current is 35~45A, and welding frequency is pattern three, weldering
The milli second/time of action time 35~45 is connect, the distance of tungsten electrode and workpiece is 1~3mm, and gage of wire is 1.0~1.6mm, using argon
Gas shielded, protection gas argon flow amount is 3~7L/min；During welding, the overlapping rate between Dao Yu roads is 40%~60%；
Nozzle breaking part is repaired using the technique of cold metal transfer, technological parameter is：Welding current is 200~270A, weldering
It is 14~18V to connect voltage, and the distance of welding wire and workpiece is 2~3mm, and gage of wire is 1.0~1.2mm, using mixing gas shielded,
Protect gas argon gas and CO2Mixed gas flow is 15~25L/min, and the volume ratio of argon gas and carbon dioxide is 80~98：20~2；
Wire feed rate is 2.0~3.0r/min, and welding sweep speed is 10~20mm/s, the overlapping rate between Dao Yu roads for 50%~
70%.
Described universal pitot tube pump nozzle wear or fracture cold metal transfer welding repair method, in step (7), adopt
Stress removal is carried out to cladding layer with hammering method, often one layer is welded and just goes de-stress once, the hammering time is 4~6min.
Described universal pitot tube pump nozzle wear or fracture cold metal transfer welding repair method, in step (8), adopt
End face blank is carried out with lathe finally to finish and drill, to meet the installation dimension of end face and required precision.
The present invention design philosophy be：
Sealing opening ring between casing and nozzle is rotated for the pitot tube pump longtime running to wear, and further results in nozzle mill
Damage, but because nozzle is pumped (conveying) medium, a part is hollow stainless steel tube making and transfixion, and nozzle wear is suddenly
Impacted by rotation casing out-of-balance force, the problems such as causing nozzle outlet end portion fractures, fail.The inventive method uses will
Damage output end to remove, re-work a blank, be assembled together with original nozzle outlet end, welded using cold metal transfer
Connect method, from substrate material identical stainless steel metal welding wire, welded using rational welding condition, and lead to
The residual stress in part after hammering method removal is welded is crossed, then re-works original size, so as to recover pitot tube pump spray
The performance of mouth.The present invention pitot tube pump nozzle general to petroleum chemical industry carries out cold metal transfer REPAIR WELDING, cold
Metal transfer is a good interconnection technique, and it passes through pulsed wire feed technology, it is possible to achieve steel plate connection thick 0.8mm is not
Deformation, lower heat input is welded with than traditional fusing, is coordinated using ABB robots and welding machine, automation efficiency high, is repaired
Time is short.
The beneficial effect that is reached of the present invention is：
1st, a kind of universal pitot tube pump nozzle wear provided by the invention or fracture cold metal transfer welding repair method,
Its key point is to make suitable frock, meets machining accuracy, using the hollow Pitot tube nozzle of cold metal transfer REPAIR WELDING not
Deformation, it is made the heat for being transported to matrix less, coordinated using ABB robots and welding machine, automatically by pulsed wire feed technology
Change efficiency high, repair time are short.Nozzle is quickly set to meet the requirement of production, without the new Pitot tube to be purchased such as long-term
The nozzle of pump, original Pitot tube nozzle is surveyed and drawn, while maintenance, while manufacture.
2nd, the inventive method buys new Pitot tube nozzle and is more convenient, is less expensive again relatively, and time-consuming shorter, so as to contract
The downtime of short pump, very big cost is saved to enterprise.
Brief description of the drawings
Fig. 1 is damage Pitot tube nozzle schematic diagram.Label in figure, 1 damage Pitot tube nozzle outlet end；2 Pitot tube nozzles
Body；3 following process frocks.
Fig. 2-Fig. 3 is that Pitot tube nozzle of the present invention repairs schematic diagram.Wherein, Fig. 2 is Fig. 3 A-A sectional views；Fig. 3 is side
View；Label in figure, 2 Pitot tube nozzle bodies；4 nozzle outlet ends.
Fig. 4 is nozzle outlet end blank schematic diagram.
Fig. 5 is that nozzle outlet end finishes schematic diagram.
Embodiment
In specific implementation process, present invention use first will damage output end and remove, and a blank be re-worked, with original
The nozzle outlet end come is assembled together, using cold metal transfer welding method, from golden with substrate material identical stainless steel
Belong to welding wire, welded using rational welding condition, and the residual stress after welding in part is removed by hammering method,
Original size is re-worked again, so as to recover the performance of the pitot tube pump nozzle.
The preferred embodiments of the present invention are illustrated below, it will be appreciated that preferred embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
Embodiment
As shown in Figure 1-Figure 3, in the present embodiment, universal pitot tube pump nozzle wear or fracture cold metal transfer welding are repaiied
Compound method, comprises the following steps：
(1) according to the damaged condition of Pitot tube nozzle, the recovery scenario of nozzle is determined.
(2) sealing opening ring of abrasion is looked for into machining benchmark (center), makes frock.
(3) as shown in figure 1, one end of Pitot tube nozzle body 2 is damage Pitot tube nozzle outlet end 1, Pitot tube nozzle
The other end of body 2 is following process frock 3, and damage Pitot tube nozzle outlet end 1 is removed, processes welding groove；
(4) according to the new nozzle outlet end blank of mapping drawing making；
(5) new nozzle outlet end and original axle are coordinated；
(6) as shown in Fig. 2 one end of Pitot tube nozzle body 2 passes through cold metal transfer welding tip output end 4；
(7) overlay cladding goes de-stress；
(8) welding tooling is removed, is finished, drilling.
In step (1), nozzle is disassembled out in pitot tube pump, and after alcohol washes, it is surveyed first
Paint, then carry out the dimensional accuracy inspection of crackle, surface defect, each related axle journal, mating surface, to determine recovery scenario.Jitter values
Can be on engine lathe, with percentage table look-up, amount, if being more than the value, should be repaired no more than 0.01mm.
It is that monoblock cast comes out because Pitot tube nozzle form is complicated in step (2), fit dimension only has at two,
It is broken at one, part wears at one, if directly REPAIR WELDING can bring the consequence that postwelding can not be processed.So first will mill
The sealing opening ring of damage looks for machining benchmark (center), and solid pole blank is welded on blade, according to original machining benchmark, processing
Blank, becomes the follow-up machining benchmark of Pitot tube nozzle, while Vehicle Processing sealing opening ring fray, and turning is less than gauge
Very little below 0.5mm, preferably to reach REPAIR WELDING effect.
In step (3), Pitot tube nozzle is arranged on lathe, adjustment jitter values are in 0.01mm, by the diameter of damage
44mm, long 50mm Pitot tubes the nozzle outlet end direct turning in end face are fallen, and process 40 ° of welding grooves (see Fig. 1-Fig. 3).
In step (4), size requirement is machined to by Fig. 4：Prepare an a diameter of 65mm, a length of 75mm, same with mother metal
The blank of material, Vehicle Processing blank, first rough turn arrive is higher than desired size 0.5mm, then is finish-machined to Fig. 5 desired sizes, finally handle
The workpiece turning processed is got off, standby.
In step (5), the blank processed is corresponding with original a diameter of 32mm passage, both ends mating surface is carried out
Assembling, length of fit 12mm are assembled to original overall dimensions, and 40 ° of welding grooves are reserved in both sides.
In step (6), sealing opening ring fray uses the method reparation of high energy pulse cold welding, welding current 40A, weldering
It is pattern three (frequency is 15~20Hz) to connect frequency, and the milli second/time of welding action time 40, the distance of tungsten electrode and workpiece is 2mm, weldering
The a diameter of 1.2mm of silk, is protected using argon gas, and protection gas argon flow amount is 5L/min；During welding, the overlapping rate between Dao Yu roads is
50%.
Reserved welding groove, connected using the method for cold metal transfer reparation.Technological parameter is：Welding current is
The distance of 235A, weldingvoltage 16V, welding wire and workpiece is 2.5mm, gage of wire 1.2mm, using mixing gas shielded, is protected
Protect gas argon gas and CO2Mixed gas flow is that (volume ratio of argon gas and carbon dioxide is 98 to 20L/min：2)；Wire feed rate is
2.5r/min, welding sweep speed are 15mm/s；During welding, the overlapping rate between Dao Yu roads is 60%.
According to welding base metal phase approximately principle, wearability, the corrosion resistance stainless steel welding stick the same with matrix are selected as connection
The welding material at place, wherein, iron-based gage of wire is 1.2mm, and its nominal composition is：Fe-17Cr-4Ni-4Cu-4Nb-0.5C.
Reduce the rise of Pitot tube nozzle temperature in weld deposit process, record temperature change in real time, weld zone temperature is not higher than 100 DEG C, such as
Fruit weld zone temperature, using interval welding, makes it be reduced to room temperature and restarts to weld again close to 100 DEG C, after final welding
It is 1.5mm to leave allowance；
In step (7), stress removal is carried out to cladding layer using hammering method, Pitot tube nozzle is in the direct rotary of processing platform one
Turn, just go de-stress once per one layer of cladding, the hammering time is 5min.
In step (8), frock is removed using the method for wire cutting, recovers original size requirement using advanced pincers worker.Root
Digging is carried out using lathe to the end face blank of nozzle outlet end to finish again, finally drilled further according to Fig. 3 to meet end according to Fig. 5
The installation dimension in face and required precision.
Embodiment result shows, a kind of universal pitot tube pump nozzle wear provided by the invention or fracture cold metal transfer
Welding repair method, its key point are to make suitable frock, meet machining accuracy, hollow using cold metal transfer REPAIR WELDING
Pitot tube nozzle is indeformable, and it makes the heat for being transported to matrix less by pulsed wire feed technology, using ABB robots with
Welding machine coordinates, and automation efficiency high, repair time are short, nozzle is met the requirement of production.
Finally it should be noted that the foregoing is only the preferred embodiments of the present invention, it is not intended to limit the invention,
Although the present invention will be described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be with
Technical scheme described in foregoing embodiments is modified, or equivalent substitution is carried out to which part technical characteristic.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements made etc., it should be included in the guarantor of the present invention
Within the scope of shield.
Claims (9)
1. a kind of universal pitot tube pump nozzle wear or fracture cold metal transfer welding repair method, it is characterised in that including
Following steps：
(1) according to the damaged condition of Pitot tube nozzle, the recovery scenario of nozzle is determined；
(2) sealing opening ring of abrasion is looked for into machining benchmark, makes frock；
(3) damage Pitot tube nozzle outlet end is removed, processes welding groove；
(4) according to the new nozzle outlet end blank of mapping drawing making；
(5) new nozzle outlet end and original axle are coordinated；
(6) welded using high energy pulse cold welding and cold metal transfer；
(7) overlay cladding goes de-stress；
(8) welding tooling is removed, is finished, drilling.
2. universal pitot tube pump nozzle wear according to claim 1 or fracture cold metal transfer welding repair method,
Characterized in that, in step (1), nozzle is disassembled out in pitot tube pump, and after alcohol washes, it is surveyed first
Paint, then carry out the dimensional accuracy inspection of crackle, surface defect, each related axle journal, mating surface, to determine recovery scenario.
3. universal pitot tube pump nozzle wear according to claim 1 or fracture cold metal transfer welding repair method,
Characterized in that, in step (2), the sealing opening ring of abrasion is looked for into machining benchmark first, solid pole hair is welded on blade
Base, according to original machining benchmark, machining blanks, become the follow-up machining benchmark of Pitot tube nozzle.
4. universal pitot tube pump nozzle wear according to claim 1 or fracture cold metal transfer welding repair method,
Characterized in that, in step (3), Pitot tube nozzle is arranged on lathe, by 40~50mm of diameter of damage, long 40~60mm
The direct turning in end face is fallen, and processes welding groove.
5. universal pitot tube pump nozzle wear according to claim 1 or fracture cold metal transfer welding repair method,
Characterized in that, in step (4), Vehicle Processing blank, size requirement is machined to.
6. universal pitot tube pump nozzle wear according to claim 1 or fracture cold metal transfer welding repair method,
Characterized in that, in step (5), the blank processed is corresponding with original a diameter of 30~35mm passage, both ends are matched somebody with somebody
Conjunction face is assembled, and is assembled to original overall dimensions, reserves welding groove.
7. universal pitot tube pump nozzle wear according to claim 1 or fracture cold metal transfer welding repair method,
Characterized in that, in step (6), sealing opening ring fray is repaired using the method for high energy pulse cold welding, welding current is 35~
45A, welding frequency are pattern three, the welding milli second/time of action time 35~45, and the distance of tungsten electrode and workpiece is 1~3mm, welding wire
A diameter of 1.0~1.6mm, is protected using argon gas, and protection gas argon flow amount is 3~7L/min；During welding, taking between Dao Yu roads
Rate is connect as 40%~60%；
Nozzle breaking part is repaired using the technique of cold metal transfer, technological parameter is：Welding current is 200~270A, welding electricity
Press as 14~18V, the distance of welding wire and workpiece is 2~3mm, and gage of wire is 1.0~1.2mm, using mixing gas shielded, protection
Gas argon gas and CO2Mixed gas flow is 15~25L/min, and the volume ratio of argon gas and carbon dioxide is 80~98：20~2；Wire feed
Speed is 2.0~3.0r/min, and welding sweep speed is 10~20mm/s, and the overlapping rate between Dao Yu roads is 50%~70%.
8. universal pitot tube pump nozzle wear according to claim 1 or fracture cold metal transfer welding repair method,
Characterized in that, in step (7), stress removal is carried out to cladding layer using hammering method, often one layer is welded and just goes de-stress once,
The hammering time is 4~6min.
9. universal pitot tube pump nozzle wear according to claim 1 or fracture cold metal transfer welding repair method,
Characterized in that, in step (8), end face blank is carried out using lathe finally to finish and drill, to meet the installation of end face
Size and required precision.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710706785.8A CN107470851A (en) | 2017-08-17 | 2017-08-17 | Universal pitot tube pump nozzle wear or fracture cold metal transfer welding repair method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710706785.8A CN107470851A (en) | 2017-08-17 | 2017-08-17 | Universal pitot tube pump nozzle wear or fracture cold metal transfer welding repair method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107470851A true CN107470851A (en) | 2017-12-15 |
Family
ID=60600773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710706785.8A Pending CN107470851A (en) | 2017-08-17 | 2017-08-17 | Universal pitot tube pump nozzle wear or fracture cold metal transfer welding repair method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107470851A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110640393A (en) * | 2019-10-17 | 2020-01-03 | 上海电气电站设备有限公司 | Welding repair method for heavy gas turbine combustor |
| WO2020029413A1 (en) * | 2018-08-10 | 2020-02-13 | 上海清河机械有限公司 | Method for repairing inner cavity of hydraulic end valve box and sealing hole of plunger end |
| CN112404658A (en) * | 2020-10-19 | 2021-02-26 | 中国石油天然气集团有限公司 | Remote control-based in-service pipeline arc 3D printing repair system and method |
-
2017
- 2017-08-17 CN CN201710706785.8A patent/CN107470851A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020029413A1 (en) * | 2018-08-10 | 2020-02-13 | 上海清河机械有限公司 | Method for repairing inner cavity of hydraulic end valve box and sealing hole of plunger end |
| CN110640393A (en) * | 2019-10-17 | 2020-01-03 | 上海电气电站设备有限公司 | Welding repair method for heavy gas turbine combustor |
| CN110640393B (en) * | 2019-10-17 | 2022-04-22 | 上海电气电站设备有限公司 | Welding repair method for heavy gas turbine combustor |
| CN112404658A (en) * | 2020-10-19 | 2021-02-26 | 中国石油天然气集团有限公司 | Remote control-based in-service pipeline arc 3D printing repair system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107470851A (en) | Universal pitot tube pump nozzle wear or fracture cold metal transfer welding repair method | |
| CN110052728B (en) | Online welding repair method for end cover cracking of large ball mill | |
| CN104532233B (en) | Rotor axle position laser melting coating restorative procedure | |
| CN107520578A (en) | A kind of express pump damage in impeller or fracture cold metal transfer welding and restoring process | |
| CN109986279B (en) | Method for welding and repairing water supply valve of high-pressure steam boiler of cracking furnace | |
| US20040064945A1 (en) | Method of forming turbine blade root | |
| CN104010762A (en) | A method of repairing rotating machine components | |
| CN105171330B (en) | Chilling ring of gasifying furnace restorative procedure | |
| CN105290707B (en) | A kind of repeatable restorative procedure of tank diameter impeller | |
| CN107419262B (en) | Universal express pump gear shaft terminal odontotripsis or crackle laser melting coating restorative procedure | |
| CN109371393A (en) | A kind of laser melting coating gear reconstruction restorative procedure | |
| EP2823149B1 (en) | Turbine diaphragm airfoil, diaphragm assembly, and method of repair | |
| CN101716698A (en) | Method for machining steam turbine honeycomb seal with electric sparks | |
| CN111041472A (en) | Laser replication process method for mortise of hub of ground gas turbine | |
| CN112091527B (en) | High-reliability repair method for short annular metal plate flame tube | |
| CN112496670A (en) | Non-welding repair process for casting cracks | |
| CN115502654B (en) | Turbine titanium alloy blade shroud gap repairing inserting sheet and gap repairing method | |
| CN113369797B (en) | Repair method for water film gap of semi-ring pipe outside chilling ring of gasification furnace | |
| EP2189239B1 (en) | Machined component manufacturing method for enhanced low cycle fatigue life | |
| CN113579533A (en) | Pre-control method for radial precision of electron beam welding structure after blisk welding | |
| CN203051214U (en) | Wear-resistant draught fan | |
| CN105643183B (en) | The restorative procedure of liquid-piston compressor impeller fragmentation under a kind of strong acid operating mode | |
| Nesterenkov et al. | Renewal of elements and construction units of gas turbine engines by means EBW | |
| CN210030887U (en) | Surface strengthening and remanufacturing device for petroleum drilling drill bit based on laser cladding | |
| CN113523718B (en) | Manufacturing process of nuclear main pump bearing guide ring key groove of nuclear power station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 314000 Hangzhou bay new economic Park, Jiaxing City, Jiaxing, Zhejiang Province, 36 room 1101 -1 Applicant after: John de Zhejiang Intelligent Technology Co. Ltd. Remanufacturing Address before: Jiaxing City, Zhejiang province 314201 Pinghu Zhapu East Road No. 509 Zhapu steel trade city 32 Building 602 room Applicant before: Jiaxing Saint John Laser Remanufacturing Technology Co. Ltd. |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171215 |
|
| RJ01 | Rejection of invention patent application after publication |