CN102527618B - Waste water pump repairing and coating method - Google Patents
Waste water pump repairing and coating method Download PDFInfo
- Publication number
- CN102527618B CN102527618B CN 201210029244 CN201210029244A CN102527618B CN 102527618 B CN102527618 B CN 102527618B CN 201210029244 CN201210029244 CN 201210029244 CN 201210029244 A CN201210029244 A CN 201210029244A CN 102527618 B CN102527618 B CN 102527618B
- Authority
- CN
- China
- Prior art keywords
- old
- coated
- waste
- pump
- waste water
- 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.)
- Expired - Fee Related
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a waste water pump repairing and coating method, which includes the following steps of (1) doing preparations including building a heat-insulation shed, derusting to-be-coated surfaces of waste water pumps until fresh metal surfaces are exposed completely and then keeping the temperature of bodies of the waste water pumps and the heat-insulation shed within 20 DEGC-30 DEG C; (2) repairing tongues of the waste water pumps; (3) repairing the bodies and sealing ring joint surfaces of the waste water pumps; (4) repairing grooves on split surfaces of the waste water pumps; (5) reinforcing the bodies of the waste water pumps locally; and (6) repairing and coating passages of the bodies of the waste water pumps. Different damage portions of the waste water pumps can be coated with different coatings, so that cavitation abrasion resistance capacity of the waste water pumps is strengthened greatly, performances of the water pumps can be improved greatly, electric power can be saved, and cost for irrigation can be reduced.
Description
Technical field
The present invention relates to the hydraulic engineering technical field, relate in particular to waste and old water pump reparation, be coated with maintaining method.
Background technology
The engineering of irrigating by lifting water to a higher level with a water pump, etc. of the Huanghe valley is all fetched water at the Yellow River of high concentration of sediment, and the cavitation (in wear-out failure is serious, has reduced water lift efficient, has affected the in good time water of crops, has increased irrigation cost, has increased the weight of the benefited masses' burden, is having a strong impact on project benefit.Because the water pump update cost is large, the most of water pump fallback in most irrigated areas, what time the irrigated area pumping plant efficient that even has only ten Percent is also continuing use, and water pump is mainly to cause scrapping because the pump housing destroys.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of cost is low, anti-cavitation wear ability is strong waste and old water pump reparation, is coated with maintaining method.
For addressing the above problem, waste and old water pump reparation of the present invention, be coated with maintaining method, comprise the following steps:
⑴ preparation: first take roof insulating, then drive sand-blasting gun to the applicator surface rust cleaning of the waste and old pump housing until expose fresh metal covering fully with air compressor machine, last, make in the described waste and old pump housing and described roof insulating to reach 20 ~ 30 ℃;
⑵ the cut water reparation of the described waste and old pump housing: burn the old coating of removing the cut water damaged location with the acetylene burning torch, remove the cut water edge of damage, make it neat; Extract size, steel plate that shape is identical with the damage cut water, beat groove at 45 ° in the welding position, according to this pump characteristic and operating condition, shorten cut water length 4 ~ 30mm, the cut water end to the axle center and impeller near 3 ~ 18mm; The preheating welding position, making its temperature is 280 ~ 320 ℃, intermittently welds with pure nickel electrode, knock on the side weld limit, to eliminate temperature stress;
⑶ the pump housing of the described waste and old pump housing and sealing ring faying face are repaired: being coated with equably thickness on cleaning good pump seat, pump cover and sealing ring faying face is 0.2 ~ 0.4mm subbing, then again with the coating of flour filler fill the gap, groove cavitates, then being coated with thickness at the sealing ring outer peripheral face is 0.1 ~ 0.2mm butter, be put on pump seat in place together with macro-axis and impeller, put pump cover, open the face bolt in fastening, simultaneously frequent rotating joint; After primary solidification, hang out macro-axis, remove the unnecessary coating of extruding; With acetone cleaning dope surface; After the whole polishings of coating surface one time, being coated with thickness is 0.2 ~ 0.4mm investment precoat, then carries out pressing; Repeating several to sealing ring and impeller gets final product without friction;
⑷ opening the gully of face in the described waste and old pump housing repairs: the place, gully that forms between pump seat, pump cover and sealing ring three junction pumping chambers and suction chamber, first brushing described thickness is 0.2 ~ 0.4mm subbing, fill up compacting with middle coating intermediate again, and be bulldozed with the I-steel ruler that is heated to 100 ℃, brushing at last thickness is the described investment precoat of 0.2 ~ 0.4mm; After solidifying with oilstone be ground to in to open face smooth equally;
⑸ the local reinforcement of the described waste and old pump housing: will clear up good pumping chamber both sides and the surface of pump cover and be coated with described subbing, and then arrange the MULTILAYER COMPOSITE reinforcement with high-strength carbon fibre and get final product;
⑹ the runner of the described waste and old pump housing is repaiied and is coated with: at first being coated with equably thickness at water passage surface is the described subbing of 0.2 ~ 0.4mm, is the described middle coating intermediate of 0.2 ~ 40mm at the uncured front smearing thickness of described subbing; Then repair to the design flow road shape with hot trowel, repair after 2 ~ 3 hours primary solidification; Be that 0.3 ~ 0.5mm investment precoat is evenly coated on described middle coating intermediate again with described thickness; At last, the temperature of described roof insulating is risen to room temperature, temperature is increased to 20 ~ 40 ℃ after 24 hours, then solidified after 24 hours, faying face is repaired got final product.
Replace the ⑴ of step described in claim 1 with following preparation method: first take roof insulating, then with the greasy dirt on the waste and old pump housing of solvent acetone cleaning, secondly eliminate rust until expose fresh metal covering fully with the applicator surface of air compressor machine drive sand-blasting gun to the described waste and old pump housing, at last, make in the described waste and old pump housing and described roof insulating and reach 20 ~ 30 ℃.
Subbing in described step ⑶, ⑷, ⑸ and ⑹ is all to be 100% epoxy resin and to be mixed by the carboxyl of epoxy resin quality 12% or liquid hydroxyl butyronitrile, 0.3 ~ 0.7% catalyst, 9% diethylenetriamine, 15% alumina powder and 30% iron oxide red by mass ratio.
The coating of the flour filler in described step ⑶ refers to that adding the particle diameter of 3 times of its quality in described subbing is 100 purpose diamond dust.
Investment precoat in described step ⑶, ⑷ and ⑹ is all to be 100% epoxy resin and to be mixed by the carboxyl of epoxy resin quality 12% or liquid hydroxyl butyronitrile, 0.3 ~ 0.7% catalyst, 9% diethylenetriamine and 25% molybdenum bisuphide by mass ratio.
Investment precoat in described step ⑷ and ⑹ is all to be that 100% epoxy resin and the diamond dust that is 70 orders 300 ~ 500% by the carboxyl of epoxy resin quality 12% or liquid hydroxyl butyronitrile, 0.3 ~ 0.7% catalyst, 9% diethylenetriamine and particle diameter mix by mass ratio.
Described catalyst refers to rare earth cerium oxide Ce
2O
3
Described epoxy resin is bisphenol A type epoxy resin E44(6101).
Described diamond dust is carborundum or alundum (Al2O3).
The present invention compared with prior art has the following advantages:
1, owing to adopting the combination of different coating in the present invention according to different damaged locations, therefore, effectively improved the anti-cavitation wear ability of water pump.Add iron oxide red and alumina powder in subbing, improve the adhesion strength with pump housing metal surface; Middle coating intermediate adds diamond dust, epoxy coating as binding agent has certain toughness and elasticity, can effectively cushion cavitation erosion kinetic energy, diamond dust hardness is very high, can resist the shear action of cavitation wear process backbone hard grit and the impact failure of cavitation erosion, therefore, middle coating intermediate is to recover pump housing flow channel shape, the main coating of anti-cavitation wear; Add molybdenum bisuphide in investment precoat, make coating surface become smooth selflubricatingpiston, eliminate on the one hand water passage surface cavitation erosion source, make runner cross water on the other hand smooth and easy.
2, material therefor of the present invention is easy to get, and is with low cost, also applicable to the reparation of the anti-cavitation wear at the cavitation wear such as runner, spiral case and the stator in power station position, be coated with and protect.
3, the present invention is through total pumping plant of doing determines that the 1# machine 24SH-9(that scraps adds in irrigated area, river, Jingtai) the water pump practical application effect is remarkable, and after repairing, the water lift amount surpasses specified 1.07 m
3The 26.64%(of/s is referring to table 1).
Table 1
The specific embodiment
Embodiment 1Waste and old water pump reparation, be coated with maintaining method, comprise the following steps:
⑴ preparation: first take roof insulating, then drive sand-blasting gun to the applicator surface rust cleaning of the waste and old pump housing until expose fresh metal covering fully with air compressor machine, last, make to reach 20 ~ 30 ℃ in the waste and old pump housing and roof insulating.
⑵ the cut water reparation of the waste and old pump housing: burn the old coating of removing the cut water damaged location with the acetylene burning torch, remove the cut water edge of damage, make it neat; Extract size, steel plate that shape is identical with the damage cut water, beat groove at 45 ° in the welding position, according to this pump characteristic and operating condition, shorten cut water length 4 ~ 30mm, the cut water end to the axle center and impeller near 3 ~ 18mm; The preheating welding position, making its temperature is 280 ~ 320 ℃, intermittently welds with pure nickel electrode, knock on the side weld limit, to eliminate temperature stress.
⑶ the pump housing of the waste and old pump housing and sealing ring faying face are repaired: being coated with equably thickness on cleaning good pump seat, pump cover and sealing ring faying face is 0.2 ~ 0.4mm subbing, then again with the coating of flour filler fill the gap, groove cavitates, then being coated with thickness at the sealing ring outer peripheral face is 0.1 ~ 0.2mm butter, be put on pump seat in place together with macro-axis and impeller, put pump cover, open the face bolt in fastening, simultaneously frequent rotating joint; After primary solidification, hang out macro-axis, remove the unnecessary coating of extruding; With acetone cleaning dope surface; After the whole polishings of coating surface one time, being coated with thickness is 0.2 ~ 0.4mm investment precoat, then carries out pressing; Repeating several to sealing ring and impeller gets final product without friction.
⑷ opening the gully of face in the waste and old pump housing repairs: the place, gully that forms between pump seat, pump cover and sealing ring three junction pumping chambers and suction chamber, first brushing thickness is 0.2 ~ 0.4mm subbing, fill up compacting with middle coating intermediate again, and be bulldozed with the I-steel ruler that is heated to 100 ℃, brushing at last thickness is 0.2 ~ 0.4mm investment precoat; After solidifying with oilstone be ground to in to open face smooth equally.
⑸ the local reinforcement of the waste and old pump housing: will clear up good pumping chamber both sides and the surperficial priming operation coating of pump cover, and then arrange the MULTILAYER COMPOSITE reinforcement with high-strength carbon fibre and get final product.
⑹ the runner of the waste and old pump housing is repaiied and is coated with: at first being coated with equably thickness at water passage surface is 0.2 ~ 0.4mm subbing, is 0.2 ~ 40mm middle coating intermediate at the uncured front smearing thickness of subbing; Then repair to the design flow road shape with hot trowel, repair after 2 ~ 3 hours primary solidification; Be that 0.3 ~ 0.5mm investment precoat is evenly coated on middle coating intermediate again with thickness; At last, the temperature of roof insulating is risen to room temperature, temperature is increased to 20 ~ 40 ℃ after 24 hours, then solidified after 24 hours, faying face is repaired got final product.
Embodiment 2Waste and old water pump reparation, be coated with maintaining method, comprise the following steps:
⑴ preparation: first take roof insulating, then with the greasy dirt on the waste and old pump housing of solvent acetone cleaning, secondly drive sand-blasting gun to the applicator surface rust cleaning of the waste and old pump housing until expose fresh metal covering fully with air compressor machine, last, make to reach 20 ~ 30 ℃ in the waste and old pump housing and roof insulating.
⑵ the cut water reparation of the waste and old pump housing: burn the old coating of removing the cut water damaged location with the acetylene burning torch, remove the cut water edge of damage, make it neat; Extract size, steel plate that shape is identical with the damage cut water, beat groove at 45 ° in the welding position, according to this pump characteristic and operating condition, shorten cut water length 4 ~ 30mm, the cut water end to the axle center and impeller near 3 ~ 18mm; The preheating welding position, making its temperature is 280 ~ 320 ℃, intermittently welds with pure nickel electrode, knock on the side weld limit, to eliminate temperature stress.
⑶ the pump housing of the waste and old pump housing and sealing ring faying face are repaired: being coated with equably thickness on cleaning good pump seat, pump cover and sealing ring faying face is 0.2 ~ 0.4mm subbing, then again with the coating of flour filler fill the gap, groove cavitates, then being coated with thickness at the sealing ring outer peripheral face is 0.1 ~ 0.2mm butter, be put on pump seat in place together with macro-axis and impeller, put pump cover, open the face bolt in fastening, simultaneously frequent rotating joint; After primary solidification, hang out macro-axis, remove the unnecessary coating of extruding; With acetone cleaning dope surface; After the whole polishings of coating surface one time, being coated with thickness is 0.2 ~ 0.4mm investment precoat, then carries out pressing; Repeating several to sealing ring and impeller gets final product without friction.
⑷ opening the gully of face in the waste and old pump housing repairs: the place, gully that forms between pump seat, pump cover and sealing ring three junction pumping chambers and suction chamber, first brushing thickness is 0.2 ~ 0.4mm subbing, fill up compacting with middle coating intermediate again, and be bulldozed with the I-steel ruler that is heated to 100 ℃, brushing at last thickness is 0.2 ~ 0.4mm investment precoat; After solidifying with oilstone be ground to in to open face smooth equally.
⑸ the local reinforcement of the waste and old pump housing: will clear up good pumping chamber both sides and the surperficial priming operation coating of pump cover, and then arrange the MULTILAYER COMPOSITE reinforcement with high-strength carbon fibre and get final product.
⑹ the runner of the waste and old pump housing is repaiied and is coated with: at first being coated with equably thickness at water passage surface is 0.2 ~ 0.4mm subbing, is 0.2 ~ 40mm middle coating intermediate at the uncured front smearing thickness of subbing; Then repair to the design flow road shape with hot trowel, repair after 2 ~ 3 hours primary solidification; Be that 0.3 ~ 0.5mm investment precoat is evenly coated on middle coating intermediate again with thickness; At last, the temperature of roof insulating is risen to room temperature, temperature is increased to 20 ~ 40 ℃ after 24 hours, then solidified after 24 hours, faying face is repaired got final product.
Above-mentioned
Embodiment 1 ~ 2Subbing in middle step ⑶, ⑷, ⑸ and ⑹ is all by quality (㎏) than being 100% epoxy resin and mixing by the carboxyl of epoxy resin quality 12% or liquid hydroxyl butyronitrile, 0.3 ~ 0.7% catalyst, 9% diethylenetriamine, 15% alumina powder and 30% iron oxide red.
The coating of the flour filler in step ⑶ refers to that adding the particle diameter of 3 times of its quality in subbing is 100 purpose diamond dust.
Investment precoat in step ⑶, ⑷ and ⑹ is all by quality (㎏) than being 100% epoxy resin and mixing by the carboxyl of epoxy resin quality 12% or liquid hydroxyl butyronitrile, 0.3 ~ 0.7% catalyst, 9% diethylenetriamine and 25% molybdenum bisuphide.
Investment precoat in step ⑷ and ⑹ is all by quality (㎏) than being that 100% epoxy resin and the diamond dust that is 70 orders 300 ~ 500% by the carboxyl of epoxy resin quality 12% or liquid hydroxyl butyronitrile, 0.3 ~ 0.7% catalyst, 9% diethylenetriamine and particle diameter mix.
Wherein: epoxy resin is bisphenol A type epoxy resin E44(6101); Diamond dust is carborundum or alundum (Al2O3).
Catalyst refers to rare earth cerium oxide Ce
2O
3
Claims (9)
1. waste and old water pump reparation, be coated with maintaining method, comprise the following steps:
⑴ preparation: first take roof insulating, then drive sand-blasting gun to the applicator surface rust cleaning of the waste and old pump housing until expose fresh metal covering fully with air compressor machine, last, make in the described waste and old pump housing and described roof insulating to reach 20 ~ 30 ℃;
⑵ the cut water reparation of the described waste and old pump housing: burn the old coating of removing the cut water damaged location with the acetylene burning torch, remove the cut water edge of damage, make it neat; Extract size, steel plate that shape is identical with the damage cut water, beat groove at 45 ° in the welding position, according to this pump characteristic and operating condition, shorten cut water length 4 ~ 30mm, the cut water end to the axle center and impeller near 3 ~ 18mm; The preheating welding position, making its temperature is 280 ~ 320 ℃, intermittently welds with pure nickel electrode, knock on the side weld limit, to eliminate temperature stress;
⑶ the pump housing of the described waste and old pump housing and sealing ring faying face are repaired: being coated with equably thickness on cleaning good pump seat, pump cover and sealing ring faying face is 0.2 ~ 0.4mm subbing, then again with the coating of flour filler fill the gap, groove cavitates, then being coated with thickness at the sealing ring outer peripheral face is 0.1 ~ 0.2mm butter, be put on pump seat in place together with macro-axis and impeller, put pump cover, open the face bolt in fastening, simultaneously frequent rotating joint; After primary solidification, hang out macro-axis, remove the unnecessary coating of extruding; With acetone cleaning dope surface; After the whole polishings of coating surface one time, being coated with thickness is 0.2 ~ 0.4mm investment precoat, then carries out pressing; Repeating several to sealing ring and impeller gets final product without friction;
⑷ opening the gully of face in the described waste and old pump housing repairs: the place, gully that forms between pump seat, pump cover and sealing ring three junction pumping chambers and suction chamber, first brushing described thickness is 0.2 ~ 0.4mm subbing, fill up compacting with middle coating intermediate again, and be bulldozed with the I-steel ruler that is heated to 100 ℃, brushing at last thickness is the described investment precoat of 0.2 ~ 0.4mm; After solidifying with oilstone be ground to in to open face smooth equally;
⑸ the local reinforcement of the described waste and old pump housing: will clear up good pumping chamber both sides and the surface of pump cover and be coated with described subbing, and then arrange the MULTILAYER COMPOSITE reinforcement with high-strength carbon fibre and get final product;
⑹ the runner of the described waste and old pump housing is repaiied and is coated with: at first being coated with equably thickness at water passage surface is the described subbing of 0.2 ~ 0.4mm, is the described middle coating intermediate of 0.2 ~ 40mm at the uncured front smearing thickness of described subbing; Then repair to the design flow road shape with hot trowel, repair after 2 ~ 3 hours primary solidification; Be that 0.3 ~ 0.5mm investment precoat is evenly coated on described middle coating intermediate again with described thickness; At last, the temperature of described roof insulating is risen to room temperature, temperature is increased to 20 ~ 40 ℃ after 24 hours, then solidified after 24 hours, faying face is repaired got final product.
2. replace the ⑴ of step described in claim 1 with following preparation method: first take roof insulating, then with the greasy dirt on the waste and old pump housing of solvent acetone cleaning, secondly eliminate rust until expose fresh metal covering fully with the applicator surface of air compressor machine drive sand-blasting gun to the described waste and old pump housing, at last, make in the described waste and old pump housing and described roof insulating and reach 20 ~ 30 ℃.
3. waste and old water pump reparation as claimed in claim 1, be coated with maintaining method, it is characterized in that: the subbing in described step ⑶, ⑷, ⑸ and ⑹ is all to be 100% epoxy resin and to be mixed by the carboxyl of epoxy resin quality 12% or liquid hydroxyl butyronitrile, 0.3 ~ 0.7% catalyst, 9% diethylenetriamine, 15% alumina powder and 30% iron oxide red by mass ratio.
4. waste and old water pump reparation as claimed in claim 1, be coated with maintaining method, it is characterized in that: the coating of the flour filler in described step ⑶ refers to that adding the particle diameter of 3 times of its quality in described subbing is 100 purpose diamond dust.
5. waste and old water pump reparation as claimed in claim 1, be coated with maintaining method, it is characterized in that: the investment precoat in described step ⑶, ⑷ and ⑹ is all to be 100% epoxy resin and to be mixed by the carboxyl of epoxy resin quality 12% or liquid hydroxyl butyronitrile, 0.3 ~ 0.7% catalyst, 9% diethylenetriamine and 25% molybdenum bisuphide by mass ratio.
6. waste and old water pump reparation as claimed in claim 1, be coated with maintaining method, it is characterized in that: the investment precoat in described step ⑷ and ⑹ is all to be that 100% epoxy resin and the diamond dust that is 70 orders 300 ~ 500% by the carboxyl of epoxy resin quality 12% or liquid hydroxyl butyronitrile, 0.3 ~ 0.7% catalyst, 9% diethylenetriamine and particle diameter mix by mass ratio.
As claim 3,5 or 6 described waste and old water pump reparations, be coated with maintaining method, it is characterized in that: described catalyst refers to rare earth cerium oxide Ce
2O
3
As claim 3,5 or 6 described waste and old water pump reparations, be coated with maintaining method, it is characterized in that: described epoxy resin is bisphenol A type epoxy resin E44(6101).
9. waste and old water pump as described in claim 4 or 6 reparation, be coated with maintaining method, it is characterized in that: described diamond dust is carborundum or alundum (Al2O3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210029244 CN102527618B (en) | 2012-02-10 | 2012-02-10 | Waste water pump repairing and coating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210029244 CN102527618B (en) | 2012-02-10 | 2012-02-10 | Waste water pump repairing and coating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102527618A CN102527618A (en) | 2012-07-04 |
| CN102527618B true CN102527618B (en) | 2013-06-19 |
Family
ID=46336349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210029244 Expired - Fee Related CN102527618B (en) | 2012-02-10 | 2012-02-10 | Waste water pump repairing and coating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102527618B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104858607A (en) * | 2015-04-24 | 2015-08-26 | 湘潭杰熙环境科技有限责任公司 | Full-repairing technology for housing of desulphurization circulating pump |
| CN110125608A (en) * | 2019-05-20 | 2019-08-16 | 马斯特模具（昆山）有限公司 | A kind of method for repairing and mending that interior heating flow distribution plate heater strip is exposed |
| CN112059544A (en) * | 2020-08-26 | 2020-12-11 | 王立民 | Energy-saving modification method for water pump |
| CN112295877B (en) * | 2020-10-23 | 2023-02-28 | 云南华电鲁地拉水电有限公司 | Method for preventing local cavitation of flow passage component of water turbine |
| CN114887861A (en) * | 2022-04-28 | 2022-08-12 | 玉溪大红山矿业有限公司 | Repairing material and repairing method for wear surface of inner wall of end cover at material inlet and outlet ends of ball mill |
| CN115716036A (en) * | 2022-10-25 | 2023-02-28 | 中国水利水电科学研究院 | Erosion-resistant protective coating structure for pump body of water pump in irrigation area and implementation method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005219025A (en) * | 2004-02-09 | 2005-08-18 | Dainippon Toryo Co Ltd | Old coating film reparing method |
| CN102218386A (en) * | 2010-04-14 | 2011-10-19 | 上海法赫桥梁隧道养护工程技术有限公司 | Protection method for rust removal, paint removal and anticorrosion of metal surface |
-
2012
- 2012-02-10 CN CN 201210029244 patent/CN102527618B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102527618A (en) | 2012-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102527618B (en) | Waste water pump repairing and coating method | |
| CN103286516B (en) | A kind of hydraulic flow passage components cavitation corrosion complex repairation coating and preparation method thereof | |
| CN111019480B (en) | Abrasion-resistant surface treatment method for bottom ring of water turbine | |
| CN105598655A (en) | Method for strengthening surface of metal turbine runner blade through combination of electric spark deposition and welding | |
| CN109233553A (en) | A kind of the abrasion repair coating and restorative procedure of desulfurization slurry pump | |
| CN106736232A (en) | A kind of desulfurization slurry circulating pump impeller restorative procedure | |
| RU2718599C1 (en) | Method of reduction and simultaneous hardening of parts from sheet steel subjected to abrasive wear during operation (versions) | |
| CN106122084A (en) | A kind of low specific speed impeller structure and processing method thereof | |
| CN201211483Y (en) | Granule reinforcing gradient composite hammer head | |
| CN105598649A (en) | Method for strengthening surface of metal turbine runner through iron-based amorphous alloy stick | |
| CN105750809A (en) | Repairing technique for impeller of circulating pump | |
| CN105014260B (en) | Welding rod and welding method for repair welding of high-strength steel wheel | |
| CN102218567A (en) | Improved-alloy compound cutting disc blade | |
| CN105298853A (en) | Centrifugal pump | |
| CN102134717A (en) | Laser alloying process for strengthening and restoring paddle and cylinder surface of high-speed mixer | |
| CN101913489A (en) | Spiral blade of spiral conveyer | |
| CN107013048A (en) | A kind of derusting reinforcement means of flange electric pole | |
| CN203939641U (en) | A kind of Wet Parts of slurry pump | |
| CN209244570U (en) | A kind of inserted disk cutter | |
| CN102020841A (en) | Nano-polyurethane (PU) elastomer, preparation method of PU elastomer and abrasion resisting method using PU elastomer | |
| CN202356143U (en) | Wear resistant scraping plate of vertical grinding machine | |
| CN202056106U (en) | Slurry pump | |
| CN111334791A (en) | Bionic design-based slurry pump blade surface non-uniform strengthening method | |
| CN201169740Y (en) | Cutting tool of road surface mechanical cutter body with ridges | |
| CN204208628U (en) | A kind of wheel tooth type crusher tooth hammer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20200210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |