CN105965203A - Bearing seat repairing technology of vacuum pump shaft - Google Patents
Bearing seat repairing technology of vacuum pump shaft Download PDFInfo
- Publication number
- CN105965203A CN105965203A CN201610576277.8A CN201610576277A CN105965203A CN 105965203 A CN105965203 A CN 105965203A CN 201610576277 A CN201610576277 A CN 201610576277A CN 105965203 A CN105965203 A CN 105965203A
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- China
- Prior art keywords
- vacuum pump
- bearing seat
- welding
- bearing position
- bearing
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention relates to the field of vacuum pumps, in particular to a bearing seat repairing technology of a vacuum pump shaft. The repairing process comprises the following steps that 1, a vacuum pump is disassembled and assembled, the surface of a bearing seat is abraded to be uneven, the abraded position of the bearing seat is polished and ground through an angle grinder, a fatigue layer on a damaged portion is removed, dirt on the bearing seat is removed through cloth strips, whether defects and cracks exist on the damaged face of the bearing seat is determined through a liquid penetrant test agent, and acetone is used for wiping to enable the surface of the bearing seat to be free of dirt; 2, the high-precision pulse cold welding technology is used for repairing the vacuum pump bearing seat according to the surface abrasion condition, a special imported nickel-based welding wire ERNiCrMo-4 is used as a repairing material, and the repaired bonded position is more resistant to abrasion than an original base body; 3, the dimension of the abraded surface is measured, welding height is determined according to the measured dimension and the standard dimension, the height of a welded weld bead is at least 1 mm larger than that of the original undamaged dimension of the bearing seat, and later on-site turning machining is convenient. Therefore, a vacuum pump shaft bearing can be fast repaired within a short time.
Description
Technical field
The present invention relates to field of vacuum, the bearing position renovation technique of a kind of vacuum pump shaft.
Background technology
The purposes of vacuum pump is that gas is pumped out in equipment, so that the pressure in equipment is big less than one
The machine of air pressure is vacuum pump.Bearing should be to support from the point of view of studying carefully its effect, i.e. literal interpretation is used for holding axle,
But this is a part for its effect, supports its essence and can undertake radial load exactly, it is understood that for it
It is used to fixing axle.It is exactly that fixing axle makes it can only realize rotating, and controls its movement axially and radially.
Since it is considered that workpiece is huge, a set of entirely to change not only cycle length and price comparison expensive, it is possible to selects to repair
Mode reach cost-effective.
The vacuum pump shaft main form of damage and reason:
(1) reason that the bending of bearing position occurs is: rotor dynamic balancing is excessive, and centering deviates the vibration caused.
(2) pine or bearing damage are crossed due to inner ring and the abrasion that causes the most often occurs in bearing journal position.
Summary of the invention
It is an object of the invention to provide the bearing position renovation technique of a kind of vacuum pump shaft, this renovation technique can be
Vacuum pump axle bearing position is quickly repaired in short time.
In order to solve the problems referred to above, the technical scheme is that:
The bearing position renovation technique of a kind of vacuum pump shaft, comprises the steps:
(1) being dismounted by vacuum pump, bearing position surface abrasion is uneven, uses angle grinding machine to bearing position wear
Position carries out polishing grinding process, removes the fatigue layer of breakage；Remove bearing position spot with cloth, use coloring
Flaw detection agent confirms that bearing position damage surface, with or without scar crack, uses acetone wiping to make its surface without spot；
(2) use high-accuracy pulse cold-welding technique to repair bearing of vacuum cylinder position according to surface abrasion situation, use specially
The import nickel-based welding wire ERNiCrMo-4 of door, as repair materials, makes the binding site after reparation will compare protocorm
Wear-resistant；
(3) measure wear surface size, according to measurement size and standard size, determine welding and assembling height；Postwelding welds
More than seam height at least above original intact size 1mm in bearing position, facilitate subsequent field turnery processing.
The bearing position renovation technique of described vacuum pump shaft, in step (1), in addition it is also necessary to every phase of detection bearing
Close data, including concentricity, deviation with beat.
The bearing position renovation technique of described vacuum pump shaft, in step (3), regulation pulse cold welding machine parameter: arteries and veins
Rush electric current 40A～60A, burst length 40～60 seconds, welding process uses percussion mode destressing, reduces
Welding deformation.
The bearing position renovation technique of described vacuum pump shaft, after REPAIR WELDING, outside using shaft end lathe to carry out
Circle roughing, car falls excess surface size to retaining 0.04～0.06mm thickness finishing size；It is continuing with axle
End lathe polish processes preliminary dimension, and with husky mulberry paper sanding and polishing to predetermined roughness.
The present invention uses the design philosophy of high energy pulse cold welding as follows:
(1) feature of high energy pulse cold welding
Welding method of the present invention can complete welding wire and workpiece fusion process within a few tens of milliseconds, is equivalent to common welding machine
For (more than several seconds), the heat being transmitted to workpiece is the fewest.So for workpiece substrate, generating heat less,
Material warms beyond solder joint is little, will not produce annealing, discoloration problem.Due to melting that each weld pulse produces
Cell body is long-pending less than 2mm3, its stress formed is the least.Although a soldering needs an a lot of molten bath to combine
Come, but owing to the stress direction of solder joint disperses, the concentrated stress that workpiece is subject to is less, so workpiece becomes after soldering
Shape is the least.
(2) high energy pulse cold welding principle
Will be stored in electric energy in electrical equipment in abrupt release in the work of the metal material compositions such as the bigger iron and steel of resistivity
Part and the junction of benefit material, contact resistance makes them generate heat rapidly and be welded together, reaches patcher's mould
Purpose.Owing to being the heating of little scope short time, so for workpiece basis, heating seldom, therefore will not be produced
Raw workpiece deformation, annealing, metachromatism, occur without crackle, without hardening, without hard spot phenomenon, does not affect machinery
Processing characteristics, can carry out car, milling, dig, various machinings and the post-production such as polishing, plating such as mill.
Advantages of the present invention and providing the benefit that:
1, the present invention will not produce workpiece deformation, annealing, metachromatism, occurs without crackle, without hardening, without hard
Point phenomenon, does not affect machining property.
2, the bearing position renovation technique of the present invention, uses high energy pulse cold welding to carry out vacuum pump axle bearing position and repairs,
Processing ease, efficiency is high, and adhesion is wanted more preferably.
Detailed description of the invention
Hereinafter the preferred embodiments of the present invention are illustrated, it will be appreciated that preferred embodiment described herein
It is merely to illustrate and explains the present invention, being not intended to limit the present invention.
In specific implementation process, the bearing position renovation technique of vacuum pump shaft of the present invention, it comprises the following steps:
S1, first vacuum pump is dismounted, owing to bearing position surface abrasion is uneven, use angle grinding machine to bearing
Abrading section, position carries out polishing grinding process, removes the fatigue layer of breakage.Bearing position spot is removed with cloth,
Use dye penetrant inspection agent confirmation bearing position damage surface is with or without scar crack, with some times of acetone wiping so that it is surface
Without spot, and detect every related data and include concentricity, deviation and beat；
S2, according to surface abrasion determine use high-accuracy pulse cold-welding technique repair bearing of vacuum cylinder position, vacuum pump
The material of axle bearing position is 42CrMo, in order to ensure to repair mating of district and matrix mechanical property, uses specially
Import nickel-based welding wire (ERNiCrMo-4) as repair materials, have the advantages that intensity is high, plasticity is good,
Being a kind of very important corrosion-resistant metal materials, the binding site after reparation will be more wear-resistant than protocorm；
S3, measurement wear surface size, according to measurement size and standard size, determine welding and assembling height.Postwelding welds
It is more than seam height at least above original intact size 1mm in bearing position that (generally 1～10mm, the present embodiment is
5mm), facilitating subsequent field turnery processing, regulation pulse cold welding machine parameter is (when pulse current 50A, pulse
Between 55 seconds).Welding process notes control heat, prevent deformation and (modes such as hammer can be used to go
Except internal stress), reduce welding deformation as far as possible and do not allow that crackle occurs.
After S4, REPAIR WELDING, using shaft end lathe to carry out cylindrical roughing, car falls excess surface size extremely
Retain 0.05mm thickness finishing size；It is continuing with shaft end lathe polish and processes preliminary dimension, and with husky
Mulberry paper sanding and polishing is to predetermined roughness.
Embodiment result shows, the renovation technique of the present invention, uses high energy pulse cold welding to carry out vacuum pump axle bearing
Position is repaired, processing ease, and efficiency is high, and adhesion is wanted more preferably.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, it is not limited to send out
Bright, although the present invention being described in detail with reference to previous embodiment, those skilled in the art is come
Saying, the technical scheme described in foregoing embodiments still can be modified by it, or to wherein part skill
Art feature carries out equivalent.All within the spirit and principles in the present invention, any amendment of being made, equivalent are replaced
Change, improvement etc., should be included within the scope of the present invention.
Claims (4)
1. the bearing position renovation technique of a vacuum pump shaft, it is characterised in that comprise the steps:
(1) being dismounted by vacuum pump, bearing position surface abrasion is uneven, uses angle grinding machine to bearing position wear
Position carries out polishing grinding process, removes the fatigue layer of breakage；Remove bearing position spot with cloth, use coloring
Flaw detection agent confirms that bearing position damage surface, with or without scar crack, uses acetone wiping to make its surface without spot；
(2) use high-accuracy pulse cold-welding technique to repair bearing of vacuum cylinder position according to surface abrasion situation, use specially
The import nickel-based welding wire ERNiCrMo-4 of door, as repair materials, makes the binding site after reparation will compare protocorm
Wear-resistant；
(3) measure wear surface size, according to measurement size and standard size, determine welding and assembling height；Postwelding welds
More than seam height at least above original intact size 1mm in bearing position, facilitate subsequent field turnery processing.
2. according to the bearing position renovation technique of the vacuum pump shaft described in claim 1, it is characterised in that step (1)
In, in addition it is also necessary to every related data of detection bearing, including concentricity, deviation with beat.
3. according to the bearing position renovation technique of the vacuum pump shaft described in claim 1, it is characterised in that step (3)
In, regulation pulse cold welding machine parameter: pulse current 40A～60A, burst length 40～60 seconds, welding process
Middle use percussion mode destressing, reduces welding deformation.
4. according to the bearing position renovation technique of the vacuum pump shaft described in claim 1, it is characterised in that welding is repaiied
After Fu, use shaft end lathe carry out cylindrical roughing, car fall excess surface size to retain 0.04～
0.06mm thickness finishing size；It is continuing with shaft end lathe polish and processes preliminary dimension, and with husky mulberry paper
Sanding and polishing is to predetermined roughness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610576277.8A CN105965203A (en) | 2016-07-20 | 2016-07-20 | Bearing seat repairing technology of vacuum pump shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610576277.8A CN105965203A (en) | 2016-07-20 | 2016-07-20 | Bearing seat repairing technology of vacuum pump shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105965203A true CN105965203A (en) | 2016-09-28 |
Family
ID=56952762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610576277.8A Pending CN105965203A (en) | 2016-07-20 | 2016-07-20 | Bearing seat repairing technology of vacuum pump shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105965203A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106903477A (en) * | 2017-02-10 | 2017-06-30 | 合肥福莱妮信息科技有限公司 | A kind of taper roll-in machine bearing position renovation technique |
| CN106925940A (en) * | 2017-03-07 | 2017-07-07 | 黄石市宏佳模具有限公司 | A kind of welding and restoring process of extrusion die |
| CN107218257A (en) * | 2017-06-23 | 2017-09-29 | 安徽绿环泵业有限公司 | The surface repairing method of pump shaft when a kind of centrifugal pump changes filler |
| CN109290733A (en) * | 2018-10-16 | 2019-02-01 | 浙江翰德圣智能再制造技术有限公司 | A kind of alloy copper sliding axletree renovation technique |
| CN109531040A (en) * | 2018-09-28 | 2019-03-29 | 中国人民解放军第五七九工厂 | A kind of method that the aero-engine cup type part abrasion of TA15 alloy is repaired |
| CN110508994A (en) * | 2019-07-25 | 2019-11-29 | 瑞通机械张家口有限公司 | A kind of recovery technique of large size tooth shaft and box body of speed reducer bearing digit pulse cold welding |
| CN112247391A (en) * | 2020-10-21 | 2021-01-22 | 北京建工土木工程有限公司 | Method for repairing piston rod of hydraulic cylinder of shield tunneling machine |
| CN112496503A (en) * | 2020-11-30 | 2021-03-16 | 中国南方电网有限责任公司超高压输电公司昆明局 | High-altitude cold welding repair method for defects of superficial holes of drainage plate of strain compression joint pipe |
| CN112719776A (en) * | 2020-12-22 | 2021-04-30 | 中船重工龙江广瀚燃气轮机有限公司 | Method for processing and repairing surface of rotor shaft neck after nickel plating |
| CN112833107A (en) * | 2020-12-31 | 2021-05-25 | 成都中车四方轨道车辆有限公司 | Automatic axle box bearing maintenance line and maintenance method |
| CN114734128A (en) * | 2022-03-30 | 2022-07-12 | 大唐锅炉压力容器检验中心有限公司 | Welding repair method for valve seat sealing surface |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106903477A (en) * | 2017-02-10 | 2017-06-30 | 合肥福莱妮信息科技有限公司 | A kind of taper roll-in machine bearing position renovation technique |
| CN106925940A (en) * | 2017-03-07 | 2017-07-07 | 黄石市宏佳模具有限公司 | A kind of welding and restoring process of extrusion die |
| CN107218257A (en) * | 2017-06-23 | 2017-09-29 | 安徽绿环泵业有限公司 | The surface repairing method of pump shaft when a kind of centrifugal pump changes filler |
| CN109531040A (en) * | 2018-09-28 | 2019-03-29 | 中国人民解放军第五七九工厂 | A kind of method that the aero-engine cup type part abrasion of TA15 alloy is repaired |
| CN109290733A (en) * | 2018-10-16 | 2019-02-01 | 浙江翰德圣智能再制造技术有限公司 | A kind of alloy copper sliding axletree renovation technique |
| CN110508994A (en) * | 2019-07-25 | 2019-11-29 | 瑞通机械张家口有限公司 | A kind of recovery technique of large size tooth shaft and box body of speed reducer bearing digit pulse cold welding |
| CN112247391A (en) * | 2020-10-21 | 2021-01-22 | 北京建工土木工程有限公司 | Method for repairing piston rod of hydraulic cylinder of shield tunneling machine |
| CN112496503A (en) * | 2020-11-30 | 2021-03-16 | 中国南方电网有限责任公司超高压输电公司昆明局 | High-altitude cold welding repair method for defects of superficial holes of drainage plate of strain compression joint pipe |
| CN112719776A (en) * | 2020-12-22 | 2021-04-30 | 中船重工龙江广瀚燃气轮机有限公司 | Method for processing and repairing surface of rotor shaft neck after nickel plating |
| CN112833107A (en) * | 2020-12-31 | 2021-05-25 | 成都中车四方轨道车辆有限公司 | Automatic axle box bearing maintenance line and maintenance method |
| CN112833107B (en) * | 2020-12-31 | 2023-03-10 | 成都中车四方轨道车辆有限公司 | Automatic axle box bearing maintenance line and maintenance method |
| CN114734128A (en) * | 2022-03-30 | 2022-07-12 | 大唐锅炉压力容器检验中心有限公司 | Welding repair method for valve seat sealing surface |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| 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. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160928 |