CN105290707B - A kind of repeatable restorative procedure of tank diameter impeller - Google Patents
A kind of repeatable restorative procedure of tank diameter impeller Download PDFInfo
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- CN105290707B CN105290707B CN201510877498.4A CN201510877498A CN105290707B CN 105290707 B CN105290707 B CN 105290707B CN 201510877498 A CN201510877498 A CN 201510877498A CN 105290707 B CN105290707 B CN 105290707B
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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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- Structures Of Non-Positive Displacement Pumps (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The present invention discloses a kind of repeatable restorative procedure of tank diameter impeller, including the impeller that detection is damaged, the cut-off blade step removed after the blade of impeller is cut from root；The cylindrical removal surface oxide layer and the cylindrical finishing step of blade weld layer of the bead filler of the impeller of blade will have been cut off；In the cylindrical grooving step of 2~6 necks corresponding with vane end faces shape of cylindrical uniform processing of bead filler；According to prophyll chip size and requirement and the blade processing step of blade corresponding with bead filler size and its neck deep processing；In the neck that the blade processed is inserted to bead filler, the assembly welding step for being then fixedly connected with blade with bead filler with welding.The present invention is by the way that the blade of impeller failure is removed, coordinated with the cylindrical amendment of bead filler and fluting with brand-new blade, realization is quick, low cost repairs tank diameter impeller damaged blade and later stage multi-time no fluting quickly repairs impaired impeller, thus with the characteristics of method is simple, reparation is quick, cost is low.
Description
Technical field
The invention belongs to equipment Repairing Technology field, be related to one kind can method for maintaining is simple, it is low to repair quick, cost,
The repeatable restorative procedure of the tank diameter impeller of service life length after reparation.
Background technology
Tank diameter is the rotation by agitator, realizes the mediation mixing plant of the stirring mixing of slurry in groove, extensively should
For industries such as mine, metallurgy, chemical industry, environmental protection, construction.Its agitator of mining tank diameter can be divided into propeller by structure and stir
Mix device, disc-type agitator, open type agitator and under plunder formula agitator, disc type and open type agitator mainly produce radial flow
Mark, and propeller and under plunder formula agitator then based on axial flow path.Flowsheet of slurry agitation groove is for before single-trough flotating machine operation
Flowsheet of slurry agitation, makes ore particle suspend and fully contact, mix with medicament, is that sorting operation creates conditions, it can also be in aluminum oxide
It is used as pre-desilication tank, dissolution pit, de- washing trough and seed precipitation tank in production.Cut when being worked due to the mixing arm of tank diameter
Shear force and slurry erosive wear, generally existing vibrations increasing, blade edge damage etc. are existing after causing blade working for a period of time
As causing blade failure and needing to change.Because tank diameter impeller Leaf is generally welded on the bead filler of core, entirety is more
Change that not only cost is higher, and it is also the great wasting of resources integrally to scrap for intact bead filler, and in general leaf
Core wheel with drive mandrel in order to be connected, and the accuracy of manufacture is higher, and part also uses taper hole structure, and its keyway can not be flat with axis
Row also increases manufacture difficulty, therefore comparatively bead filler price is higher, especially for the prismatic blade tank diameter of low cost
For be even more the problem of there is replacement cost and higher spare parts cost.
In the prior art, after general tank diameter damage in impeller using cutting remove blade, then directly weld new blade in
The method that cutting position is repaired, although restorative procedure is simple, but there is new blade location difficulty, be welded to connect place's low intensity and after
The defects such as phase dynamic cooperation correction difficulty, are only applicable to lash-up recovering；Also have using damaged blade surface overlaying or new blade is straight
Connect the method for being welded in damaged blade back, but still have that overlay-operation is difficult, efficiency is low, be difficult to be repeated several times asking of repairing
Topic, and new blade is welded there is also because damaged blade deformation causes new blade to be fitted with it difficulty in damaged blade back, welds
Point requires higher in blade wear more serious edge position, weld strength and operation, and use time is compared with hour hand, and to not
New blade with position can only be corrected individually, and new blade manufacturing cost is high and efficiency is low.
The content of the invention
Have that method for maintaining is simple, it is low to repair quick, cost it is an object of the invention to provide one kind, repair after use the longevity
Order the repeatable restorative procedure of long tank diameter impeller.
The object of the present invention is achieved like this, including cut-off blade, cylindrical finishing, cylindrical fluting, blade processing, assembling
Welding step, is comprised the following steps that：
A, cut-off blade：The impeller damaged is detected, the blade of the available impeller of bead filler is removed from after the cutting of root；
B, cylindrical finishing：Step A has been cut off to the cylindrical removal surface oxide layer and blade of the bead filler of the impeller of blade
Weld layer；
C, cylindrical fluting：The cylindrical uniform processing 4~6 of the bead filler obtained in step B is corresponding with vane end faces shape
Neck；
D, blade processing：According to prophyll chip size with require and it is corresponding with bead filler size and its neck deep processing
Blade；
E, assembly welding：In the neck for the bead filler that the blade insertion step C that D steps are processed is obtained, then with weldering
Connect and be fixedly connected with blade with bead filler.
The present invention is coordinated by the way that the blade of impeller failure is removed with the cylindrical amendment of bead filler and fluting with brand-new blade,
Realize that quick, inexpensive reparation tank diameter impeller damaged blade and quick repair of later stage multi-time no fluting are damaged impeller, with such as
Lower beneficial effect：
1st, by the damaged blade for removing low value, easily manufacturing, and retain the higher bead filler of complicated, cost, make
Obtain whole rehabilitation cost relatively low；
2nd, remove after blade, be anaphase blade and impeller by the cylindrical removal surface oxide layer of bead filler and welding metamorphic layer
Firm welding between core lays the first stone, and improves the service life of impeller after repairing；
3rd, according to blade tip shape in the cylindrical fluting of bead filler, blade can be achieved in the cylindrical quick positioning of bead filler,
And be transferred to stress during blade working with bead filler junction in neck by conventional welding root, effectively reduce blade
Stress at root weld, further improves the service life of impeller after repairing；
4th, blade is individually processed, the processing efficiency of blade has both been improved, and also improves the machining accuracy of blade, favorably
In reduction later stage dynamic balance calibration workload, or even cancel later stage dynamic balance calibration, improve remediation efficiency；
5th, blade be inserted directly into after bead filler neck weld, blade resetting accurately and reliably, and neck in itself not with
Blade is fixed, and is that the repetition reparation of anaphase blade eliminates neck process, is reduced repetition maintenance difficulty, also improves weight
The efficiency repaired again.
Therefore, the present invention have that method for maintaining is simple, it is low to repair quick, cost, repair after service life it is long the characteristics of.
Brief description of the drawings
Fig. 1 is schematic flow sheet of the present invention；
Fig. 2 is the straight panel shape blade impeller structural representation of the present invention；
Fig. 3 is Fig. 2 bead filler structural representation；
Fig. 4 for Fig. 3 A-A to cross section structure diagram；
Fig. 5 is Fig. 3 B-B direction cross section structure diagram；
In figure：1- blades, 2- bead fillers, 21- direct necks, 22- internal taper holes, 23- keyways.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings, but the present invention must not be any limitation as in any way,
Based on present invention teach that any changes and modifications made, belong to protection scope of the present invention.
As illustrated in fig. 1 and 2, the present invention includes cut-off blade, cylindrical finishing, cylindrical fluting, blade processing, assembly welding step
Suddenly, comprise the following steps that：
A, cut-off blade：The impeller damaged is detected, the blade of the available impeller of bead filler is removed from after the cutting of root；
B, cylindrical finishing：Step A has been cut off to the cylindrical removal surface oxide layer and blade of the bead filler of the impeller of blade
Weld layer；
C, cylindrical fluting：The cylindrical uniform processing 4~6 of the bead filler obtained in step B is corresponding with vane end faces shape
Neck；
D, blade processing：According to prophyll chip size with require and it is corresponding with bead filler size and its neck deep processing
Blade；
E, assembly welding：In the neck for the bead filler that the blade insertion step C that D steps are processed is obtained, then with weldering
Connect and be fixedly connected with blade with bead filler.
The superficial layer that the cylindrical unilateral removal depth of bead filler in the step B is 1~3mm.
The cylindrical use turning or milling of bead filler in the step B remove superficial layer.
Neck in the step C is into 30~60 ° of direct neck or spiral channel with the central axis of bead filler.
The bottom of the direct neck is flat bottom surface and neck depth is most deep for middle part along its length.
Wall thickness between the middle part bosom of the direct neck and bead filler centre bore is not less than 10mm.
One side or both sides of the direct neck are provided with depth for the groove of 0.5~1.5mm and angle at 60~90 °.
Blade in the D steps is straight panel shape blade.
The width of blade and neck linkage section in the D steps is less than 0.05~0.25mm of neck width.
Also include high-temperature annealing step after the E steps, the high-temperature annealing step is by after blade and bead filler welding
Impeller it is overall at 300 DEG C with tripping in stove, to 600~650 DEG C and be incubated 2~4h with stove heat, then be furnace-cooled to 300 DEG C with
Under come out of the stove air cooling.
Also include dynamic balance calibration step after the E steps, the dynamic balance calibration is by the impeller warp after assembly welding
Dynamic balance running finds out the counterweight point of blade and the weight of counterweight, then subtracts balance weight and is obtained after the welding rod weight of pre-welding
To prewired counterweight, by the prewired counterweight point that blade is soldered to reuse pre-welding welding rod.
Embodiment
Straight panel shape blade impeller as shown in Fig. 2 to 5 is BCF-A4000 flowsheet of slurry agitation groove 1000 × H230 type impellers, leaf
Wheel is welded by a bead filler 2 and 4 blades 1.Blade 1 makes of 4 wide 220mm, thickness 18mm steel plate, each blade with
Axial line angle is 45 degree.The lateral surface of bead filler 2 is column structure, is welded with four blades 1, inner surface is engaged with axle
Taper hole 22, taper is 1:5.Impeller diameter is 1000mm.BCF-A4000 tank diameters original is purchased with impeller slave unit genuine, is used
Time about 90d, vibrates more seriously caused by the uneven wear of blade 1 causes impeller imbalance, and now bead filler 21
Abrasion is less.The internal taper hole 22 of bead filler 2 with the axis of cone because that will coordinate, and height will be rescued by making precision, and because taper hole taper is big, keyway 23 can not
Manufacture difficulty is also increased with diameter parallel, therefore bead filler price is higher, then occurs because of impeller low price part blade damage
And have to abandon the situation of the intact part of high price.To save spare parts cost and impeller use cost, therefore abrasion impeller is entered
Row is repaired, and it is as follows that it repairs step：
S100：Detect the impeller damaged, not yet damage and can use for bead filler 2 by blade 1 thereon from root
Portion is removed after being cut with acetylene；
S200：Deep 1~the 1.5mm of cylindrical unilateral turning of the bead filler 2 of the impeller of blade 1 will have been cut off to diameter
206mm, to remove the surface oxide layer and blade weld layer of bead filler 2；
S300：By the good cylindrical bead filler 2 of turning in its cylindrical uniform Milling Process 4 and the central axis of bead filler
At 45 °, flat and its middle part depth is the direct neck 21 that 35.5mm, width are 18mm；
S400：4 straight panel shape blades 1, blade 1 long 432mm, wide 220mm, finished product leaf are made with thick 18mm wear-resisting steel plate
Piece need to ensure that opposite side is concordant, thickness is uniform；
S500：The above-mentioned blade 1 processed is inserted in the direct neck 21 of bead filler 2, and to make blade during insertion blade 1
1 root and the bottom of direct neck 21 are combined closely, and each blade 1 is highly equal, then using submerged-arc welding or CO2Gas shielded arc welding is by leaf
Piece 1 is fixed with bead filler 2 and welded；
S500：By the impeller entirety after welding at 300 DEG C with tripping in annealing furnace, with stove heat is to 600~650 DEG C and is incubated
2~4h, then comes out of the stove air cooling to eliminate welding stress with being furnace-cooled to less than 300 DEG C；
S600：Impeller after assembly welding and stress relief annealing is found out into the counterweight point of blade 1 through dynamic balance running and matched somebody with somebody
Prewired counterweight is obtained after the weight of weight, the welding rod weight that then balance weight is subtracted to pre-welding, by prewired with reuse pre-welding
Welding rod is soldered to the counterweight point at blade back, so as to complete the reparation of impeller.
By above-mentioned reparation step, a bead filler 2 can be by three to four rebladings, due to the straight card of bead filler 2
Groove 21 can be processed with first time, therefore follow-up repair can omit above-mentioned S300 steps.Above-mentioned BCF-A4000 tank diameters
1000 × H230 types impeller two impellers are repaired by above step, it is without exception that impeller after reparation is used for flowsheet of slurry agitation groove
Vibration and heating, floatation indicators and the new impeller phase ratio of use exceed without impeller use time after significant change, and reparation
120d, its life-span exceedes new impeller.
Claims (8)
1. a kind of repeatable restorative procedure of tank diameter impeller, it is characterised in that including cut-off blade, cylindrical finishing, cylindrical open
Groove, blade processing, assembly welding step, are comprised the following steps that：
A, cut-off blade：The impeller damaged is detected, the blade of the available impeller of bead filler is removed from after the cutting of root；
B, cylindrical finishing：Step A has been cut off to cylindrical removal surface oxide layer and the blade welding of the bead filler of the impeller of blade
Layer；
C, cylindrical fluting：The cylindrical uniform processing 4 ~ 6 of the bead filler obtained in step B is corresponding with vane end faces shape to block
Groove, neck is into 30 ~ 60 ° of direct neck or spiral channel with the central axis of bead filler；
D, blade processing：According to prophyll chip size and requirement and leaf corresponding with bead filler size and its neck deep processing
Piece；
E, assembly welding：, then will with welding in the neck for the bead filler that the blade insertion step C that D steps are processed is obtained
Blade is fixedly connected with bead filler；
F, high annealing：Be impeller after welding blade and bead filler it is overall at 300 DEG C with tripping in stove, with stove heat to 600 ~
650 DEG C and 2 ~ 4h is incubated, then with being furnace-cooled to less than 300 DEG C air coolings of coming out of the stove.
2. the repeatable restorative procedure of tank diameter impeller according to claim 1, it is characterised in that the leaf in the step B
The superficial layer that the cylindrical unilateral removal depth of core wheel is 1 ~ 3mm.
3. the repeatable restorative procedure of tank diameter impeller according to claim 2, it is characterised in that the leaf in the step B
The cylindrical use turning or milling of core wheel remove superficial layer.
4. the repeatable restorative procedure of tank diameter impeller blade according to claim 1, it is characterised in that the direct neck
Bottom be that flat bottom surface and neck depth are most deep for middle part along its length.
5. the repeatable restorative procedure of tank diameter impeller according to claim 4, it is characterised in that in the direct neck
Wall thickness between portion bosom and bead filler centre bore is not less than 10mm.
6. the repeatable restorative procedure of tank diameter impeller according to claim 1, it is characterised in that the one of the direct neck
Side or both sides are provided with depth for the groove of 0.5 ~ 1.5mm and angle at 60 ~ 90 °.
7. the repeatable restorative procedure of tank diameter impeller according to claim 1, it is characterised in that the leaf in the D steps
Piece is straight panel shape blade.
8. the repeatable restorative procedure of tank diameter impeller according to claim 1, it is characterised in that also including dynamic balancing school
Positive step, the dynamic balance calibration is the counterweight point and counterweight that the impeller after assembly welding is found out to blade through dynamic balance running
Prewired counterweight is obtained after weight, the welding rod weight that then balance weight is subtracted to pre-welding, by prewired with reuse pre-welding welding rod
It is soldered to the counterweight point of blade.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510877498.4A CN105290707B (en) | 2015-12-04 | 2015-12-04 | A kind of repeatable restorative procedure of tank diameter impeller |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201510877498.4A CN105290707B (en) | 2015-12-04 | 2015-12-04 | A kind of repeatable restorative procedure of tank diameter impeller |
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| CN105290707A CN105290707A (en) | 2016-02-03 |
| CN105290707B true CN105290707B (en) | 2017-10-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105834668A (en) * | 2016-05-31 | 2016-08-10 | 上海祥贸实业有限公司 | Wear and corrosion resisting repair method for draught fan |
| 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 |
| CN107627073A (en) * | 2017-09-19 | 2018-01-26 | 成都成发泰达航空科技有限公司 | A kind of repair method of stator blade |
| CN112276473B (en) * | 2020-10-21 | 2022-03-25 | 北京建工土木工程有限公司 | Spiral machine blade repairing method of shield machine |
| CN114083224B (en) * | 2021-11-26 | 2022-11-15 | 国网四川省电力公司映秀湾水力发电总厂 | Repair method of fixed guide vane of mixed-flow water turbine |
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| US20050161542A1 (en) * | 2002-02-07 | 2005-07-28 | Theut Patrick J. | Method of manufacturing refiner elements |
| CN100540208C (en) * | 2006-12-22 | 2009-09-16 | 沈阳大陆激光技术有限公司 | A kind of renovation technique of centrifugal compressor runner blade |
| CN102120292B (en) * | 2011-03-18 | 2012-07-25 | 中国航空工业集团公司北京航空制造工程研究所 | Vacuum brazing repairing method for cracks of high-temperature alloy thin-wall part |
| CN103008966B (en) * | 2012-12-05 | 2015-07-01 | 中国海洋石油总公司 | Repairing method of scrapped mud pump cylinder sleeve |
| CN104014903B (en) * | 2014-06-27 | 2015-12-02 | 河北瑞兆激光再制造技术有限公司 | Manual electric arc welding restorative procedure after centrifugal blower fan blade wheel blade wear |
| CN104162761B (en) * | 2014-08-18 | 2016-08-24 | 青岛海之冠汽车配件制造有限公司 | flywheel crack repairing method |
| CN104259793B (en) * | 2014-08-27 | 2017-07-07 | 张家港市海工船舶机械制造有限公司 | A kind of impeller manufacture method and its impeller manufactured by the method |
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