CN107790955A - A kind of restorative procedure of pump wearing piece macromolecule composite silicon carbide ceramic material - Google Patents

A kind of restorative procedure of pump wearing piece macromolecule composite silicon carbide ceramic material Download PDF

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Publication number
CN107790955A
CN107790955A CN201711020817.5A CN201711020817A CN107790955A CN 107790955 A CN107790955 A CN 107790955A CN 201711020817 A CN201711020817 A CN 201711020817A CN 107790955 A CN107790955 A CN 107790955A
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China
Prior art keywords
impeller
carborundum
patching material
silicon carbide
resin
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CN201711020817.5A
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Chinese (zh)
Inventor
徐方园
梅玉波
杨建�
李静
高阳
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Yangzhou Zhong Zhuo Pump Co Ltd
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Yangzhou Zhong Zhuo Pump Co Ltd
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Priority to CN201711020817.5A priority Critical patent/CN107790955A/en
Publication of CN107790955A publication Critical patent/CN107790955A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P6/00Restoring or reconditioning objects

Abstract

A kind of restorative procedure of pump wearing piece macromolecule composite silicon carbide ceramic material, surface irregularities processing:Cleaning treatment is carried out with special tools for cleaning rust and high pressure water washing impeller surface pollutant, acetone cleaning removes all acid-base materials and debris on surface, until the metal true qualities of raw material show completely.Carry out mechanical outline size detection simultaneously, to gap portions welding metal skeleton trained shape, the enhancing in repairing structure is realized simultaneously, and get or draw ditch ready for impeller metallic matrix is necessary, the skeleton of stainless steel mesh is fixed on impeller front and rear cover plate and blade by the way of being mechanically fixed, repaired by patching material for the pump housing, material has incomparable pliability, crack resistance, the fragility for solving general ceramic material it is high and it is frangible the shortcomings that, the pump housing patching material of implementation uses enhanced convenience, the intensity of patching material more optimizes.

Description

A kind of restorative procedure of pump wearing piece macromolecule composite silicon carbide ceramic material
Technical field
The present invention relates to a kind of restorative procedure, and in particular to a kind of pump wearing piece macromolecule composite silicon carbide ceramic material Restorative procedure.
Background technology
Coal is currently the maximum energy kind in China(Energy aggregate consumption 70%), and sulphur is main in coal be harmful to Element.Sulphur generates after poisonous SO2 gases largely discharge with oxygen combustion reaction and air is caused seriously to pollute, and SO2 is also to be formed The main chief culprit of acid rain.With the fast development of national economy and China's process of industrialization, SO2 discharge capacity is also constantly increasing Add, destruction getting worse of the fire coal boiler fume to ecological environment, the desulfurized treatment of coal-fired flue-gas and thorough qualified discharge are The urgent requirement of cry and environmental protection work as the whole society.
In today that national environmental consciousness increasingly improves, to realize economic and society sustainable development, State Ministry of Environmental Protection Door has put into effect very urgent strict policy, it is desirable to which the coal-fired flue-gas discharge such as thermal power plant, chemical plant, steel plant is not up to standard Enterprise must build high effective desulphurization device and solve the problems, such as sulphur emissions.
SO2 controlling soil moist has three:Desulfurization after desulfurization, burning in desulfurization, burning before burning(That is flue gas desulfurization), at present FGD wet process of FGD is considered as most ripe, efficiency high, simple to operate, the control most effective methods of SO2.Absorption tower Slurry circulating pump is the important key equipment in FGD wet flue gas desulfurizers, the normal operation of desulphurization system to the pump can There is very high requirement by property and service life.
Using to the slurry circulating pump in desulphurization system it is easy to wear and corrosion, typically use the serum recycle in desulphurization system Pump is easy to wear and corrosion:
Chemical attack:Slurries are corrosive, and are easily chemically reacted with the metal material on impeller, form chemical attack.Its Secondary, electronics shifts caused by the potential difference that impeller surface is formed, and the oxidation reaction of generation, directly destroys metal.
Physical abrasion:Due to carrying the particulate matters such as substantial amounts of lime stone and gypsum in slurries, suction inlet, discharge in pump Mouth directly impacts and destroyed to formation such as impeller of pump, backplate, spiral case liners.
Cavitation erosion:The field working conditions problem such as design or pipeline due to pump(As pump type selecting is too small, wheel speed is too fast, pipeline Block etc.)Cause pumping power insufficient, bubble formed in porch, the bubble of generation will enter higher-pressure region with liquid from low-pressure area, In higher-pressure region, bubble can drastically shrink, condense, and the liquid around it rushes at Primordial Qi bubble with high speed and taken up space, and produces high The shock wave of intensity, the flow passage components such as impeller and pump case are impacted, noise occurs and causes vibrations.Due to for a long time by impulsive force repeatedly The chemical attack effect of trace dissolved oxygen in effect and liquid, it is even into spongy that spot and crackle occur in impeller local surfaces Damage.
The content of the invention
A kind of restorative procedure of pump wearing piece macromolecule composite silicon carbide ceramic material,
Surface irregularities processing:Cleaning treatment is carried out with special tools for cleaning rust and high pressure water washing impeller surface pollutant, acetone is clear Wash away except all acid-base materials and debris on surface, until the metal true qualities of raw material show completely.Carry out simultaneously outside machinery Shape size detection;
To gap portions welding metal skeleton trained shape, while the enhancing in repairing structure is realized, and for impeller metal Matrix is necessary to get or draws ditch ready, by the way of being mechanically fixed the skeleton of stainless steel mesh be fixed on impeller front and rear cover plate and On blade;
Nondestructive inspection before impeller is repaired, check that there is the defects of flawless at impeller each position, and it is good to carry out repair process, then carry out most Whole nondestructive inspection, checks whether impeller has new crack defect, until defect, which all eliminates, can just carry out next process;
Processing is machined out to damage in impeller position, ensures coating layer thickness, eliminates uneven influence, thickness of cutting will be set in advance Count, the intensity of metal should be ensured, ensure the certain thickness of lining ceramics again, the two will take into account;
The metal surface at position need not be repaired by being encased with rubber, to protect it from being damaged;
Then position need to be repaired to impeller and carries out sandblast, the roughness after sandblasting reaches 10-50 μm, strengthens impeller metal watch Surface roughness, it is easy to pour into a mould, coats macromolecule composite silicon carbide ceramic;
Using the surface with the cleaning sandblasting of volatility cleaning agent, cleaned up and keep cleannes;
The configuration of patching material first, patching material uniform stirring 10-20 minutes are fabricated to close grain intermixture, microgroove Reason intermixture, which is evenly coated in impeller, need to repair position, treat its solidification, patching material uniform stirring a few minutes are fabricated into open grain Intermixture, open grain intermixture, which is evenly coated in impeller, need to repair position, treat its solidification;
Baking oven is heat-treated:Reparation part is placed in airtight oven, 2-4 hours are kept under 60-80 DEG C of constant temperature, are eliminated in material Stress;
Impeller solidification repairing position polish flat, it is smooth, cleaned up;
To have the position of dimension precision requirement carry out secondary machine, ensure ceramic repair member reach metalwork dimensional accuracy will Ask;
Secondary patching material is prepared, secondary patching material uniform stirring a few minutes are fabricated to close grain intermixture, close grain Intermixture is evenly coated in impeller repairing position, treats its solidification;
Upper protective film is finally applied, treats that its solidification reaches intensity;
Procuratorial work reparation position is complete, and impeller does static and dynamic equilibrium experiment;
Last temper, in airtight oven, 1-2 hours are kept under 60 DEG C of constant temperature, reach final curing molding;
Carry out wooden case, shipping list, packaging delivery.
Described patching material first, first configures sic powder, and described carborundum point includes the carborundum of 0.1mm mesh 18%-28%, 0.2mm carborundum 25%-35%, 0.01mm carborundum 7%-17%, 0.03mm carborundum 16%-26% compositions, Secondly epoxy resin is adjusted in configuration, and described epoxy resin includes 55%-65% resin, 20%-25% curing agent, 3%-5% glue Glutinous agent, 2%-4% silane additives composition, is configuring thin carborundum powder, resin, adhesive.
Described patching material first, first configures sic powder, and described carborundum point includes the carborundum of 0.1mm mesh 20%-26%, 0.2mm carborundum 27%-33%, 0.01mm carborundum 9%-15%, 0.03mm carborundum 18%-24% compositions, Secondly epoxy resin is adjusted in configuration, and described epoxy resin includes 57%-63% resin, 22%-23% curing agent, 3.5%-4.5% Adhesive, 2.5%-3.5% silane additives composition, configuring thin carborundum powder, resin, adhesive.
Described patching material first, first configures sic powder, and described carborundum point includes the carborundum of 0.1mm mesh 22%-24%, 0.2mm carborundum 29%-31%, 0.01mm carborundum 11%-13%, 0.03mm carborundum 20%-22% compositions, Secondly epoxy resin is adjusted in configuration, and described epoxy resin includes 59%-61% resin, 24%-21% curing agent, 4%-4.5%'s Adhesive, 3%-3.5% silane additives composition, is configuring thin carborundum powder, resin, adhesive.
It is an advantage of the invention that:Repaired by patching material for the pump housing, macromolecule composite silicon carbide ceramic material Inorganic material carborundum and corrosion-resistant macromolecule organic material by high rigidity, material have incomparable pliability, cracking resistance Property, the fragility for solving general ceramic material it is high and it is frangible the shortcomings that, the pump housing patching material of implementation uses more square Just, the intensity of patching material more optimizes.
Embodiment
Embodiment 1
A kind of restorative procedure of pump wearing piece macromolecule composite silicon carbide ceramic material,
Surface irregularities processing:Cleaning treatment is carried out with special tools for cleaning rust and high pressure water washing impeller surface pollutant, acetone is clear Wash away except all acid-base materials and debris on surface, until the metal true qualities of raw material show completely.Carry out simultaneously outside machinery Shape size detection;
To gap portions welding metal skeleton trained shape, while the enhancing in repairing structure is realized, and for impeller metal Matrix is necessary to get or draws ditch ready, by the way of being mechanically fixed the skeleton of stainless steel mesh be fixed on impeller front and rear cover plate and On blade;
Nondestructive inspection before impeller is repaired, check that there is the defects of flawless at impeller each position, and it is good to carry out repair process, then carry out most Whole nondestructive inspection, checks whether impeller has new crack defect, until defect, which all eliminates, can just carry out next process;
Processing is machined out to damage in impeller position, ensures coating layer thickness, eliminates uneven influence, thickness of cutting will be set in advance Count, the intensity of metal should be ensured, ensure the certain thickness of lining ceramics again, the two will take into account;
The metal surface at position need not be repaired by being encased with rubber, to protect it from being damaged;
Then position need to be repaired to impeller and carries out sandblast, the roughness after sandblasting reaches 10-50 μm, strengthens impeller metal watch Surface roughness, it is easy to pour into a mould, coats macromolecule composite silicon carbide ceramic;
Using the surface with the cleaning sandblasting of volatility cleaning agent, cleaned up and keep cleannes;
The configuration of patching material first, patching material uniform stirring 10-20 minutes are fabricated to close grain intermixture, microgroove Reason intermixture, which is evenly coated in impeller, need to repair position, treat its solidification, patching material uniform stirring a few minutes are fabricated into open grain Intermixture, open grain intermixture, which is evenly coated in impeller, need to repair position, treat its solidification;
Baking oven is heat-treated:Reparation part is placed in airtight oven, 2-4 hours are kept under 60-80 DEG C of constant temperature, are eliminated in material Stress;
Impeller solidification repairing position polish flat, it is smooth, cleaned up;
To have the position of dimension precision requirement carry out secondary machine, ensure ceramic repair member reach metalwork dimensional accuracy will Ask;
Secondary patching material is prepared, secondary patching material uniform stirring a few minutes are fabricated to close grain intermixture, close grain Intermixture is evenly coated in impeller repairing position, treats its solidification;
Upper protective film is finally applied, treats that its solidification reaches intensity;
Procuratorial work reparation position is complete, and impeller does static and dynamic equilibrium experiment;
Last temper, in airtight oven, 1-2 hours are kept under 60 DEG C of constant temperature, reach final curing molding;
Carry out wooden case, shipping list, packaging delivery.
Described patching material first, first configures sic powder, and described carborundum point includes the carborundum of 0.1mm mesh 18%-28%, 0.2mm carborundum 25%-35%, 0.01mm carborundum 7%-17%, 0.03mm carborundum 16%-26% compositions, Secondly epoxy resin is adjusted in configuration, and described epoxy resin includes 55%-65% resin, 20%-25% curing agent, 3%-5% glue Glutinous agent, 2%-4% silane additives composition, is configuring thin carborundum powder, resin, adhesive.
Described patching material first, first configures sic powder, and described carborundum point includes the carborundum of 0.1mm mesh 20%-26%, 0.2mm carborundum 27%-33%, 0.01mm carborundum 9%-15%, 0.03mm carborundum 18%-24% compositions, Secondly epoxy resin is adjusted in configuration, and described epoxy resin includes 57%-63% resin, 22%-23% curing agent, 3.5%-4.5% Adhesive, 2.5%-3.5% silane additives composition, configuring thin carborundum powder, resin, adhesive.
Described patching material first, first configures sic powder, and described carborundum point includes the carborundum of 0.1mm mesh 22%-24%, 0.2mm carborundum 29%-31%, 0.01mm carborundum 11%-13%, 0.03mm carborundum 20%-22% compositions, Secondly epoxy resin is adjusted in configuration, and described epoxy resin includes 59%-61% resin, 24%-21% curing agent, 4%-4.5%'s Adhesive, 3%-3.5% silane additives composition, is configuring thin carborundum powder, resin, adhesive.
Embodiment 2
A kind of restorative procedure of pump wearing piece macromolecule composite silicon carbide ceramic material,
Surface irregularities processing:Cleaning treatment is carried out with special tools for cleaning rust and high pressure water washing impeller surface pollutant, acetone is clear Wash away except all acid-base materials and debris on surface, until the metal true qualities of raw material show completely.Carry out simultaneously outside machinery Shape size detection;
To gap portions welding metal skeleton trained shape, while the enhancing in repairing structure is realized, and for impeller metal Matrix is necessary to get or draws ditch ready, by the way of being mechanically fixed the skeleton of stainless steel mesh be fixed on impeller front and rear cover plate and On blade;
Nondestructive inspection before impeller is repaired, check that there is the defects of flawless at impeller each position, and it is good to carry out repair process, then carry out most Whole nondestructive inspection, checks whether impeller has new crack defect, until defect, which all eliminates, can just carry out next process;
Processing is machined out to damage in impeller position, ensures coating layer thickness, eliminates uneven influence, thickness of cutting will be set in advance Count, the intensity of metal should be ensured, ensure the certain thickness of lining ceramics again, the two will take into account;
The metal surface at position need not be repaired by being encased with rubber, to protect it from being damaged;
Then position need to be repaired to impeller and carries out sandblast, the roughness after sandblasting reaches 10-50 μm, strengthens impeller metal watch Surface roughness, it is easy to pour into a mould, coats macromolecule composite silicon carbide ceramic;
Using the surface with the cleaning sandblasting of volatility cleaning agent, cleaned up and keep cleannes;
The configuration of patching material first, patching material uniform stirring 10-20 minutes are fabricated to close grain intermixture, microgroove Reason intermixture, which is evenly coated in impeller, need to repair position, treat its solidification, patching material uniform stirring a few minutes are fabricated into open grain Intermixture, open grain intermixture, which is evenly coated in impeller, need to repair position, treat its solidification;
Baking oven is heat-treated:Reparation part is placed in airtight oven, 2-4 hours are kept under 60-80 DEG C of constant temperature, are eliminated in material Stress;
Impeller solidification repairing position polish flat, it is smooth, cleaned up;
To have the position of dimension precision requirement carry out secondary machine, ensure ceramic repair member reach metalwork dimensional accuracy will Ask;
Secondary patching material is prepared, secondary patching material uniform stirring a few minutes are fabricated to close grain intermixture, close grain Intermixture is evenly coated in impeller repairing position, treats its solidification;
Upper protective film is finally applied, treats that its solidification reaches intensity;
Procuratorial work reparation position is complete, and impeller does static and dynamic equilibrium experiment;
Last temper, in airtight oven, 1-2 hours are kept under 60 DEG C of constant temperature, reach final curing molding;
Carry out wooden case, shipping list, packaging delivery.
Described patching material first, first configures sic powder, and described carborundum point includes the carborundum of 0.1mm mesh 18%-28%, 0.2mm carborundum 25%-35%, 0.01mm carborundum 7%-17%, 0.03mm carborundum 16%-26% compositions, Secondly epoxy resin is adjusted in configuration, and described epoxy resin includes 55%-65% resin, 20%-25% curing agent, 3%-5% glue Glutinous agent, 2%-4% silane additives composition, is configuring thin carborundum powder, resin, adhesive.
Described patching material first, first configures sic powder, and described carborundum point includes the carborundum of 0.1mm mesh 20%-26%, 0.2mm carborundum 27%-33%, 0.01mm carborundum 9%-15%, 0.03mm carborundum 18%-24% compositions, Secondly epoxy resin is adjusted in configuration, and described epoxy resin includes 57%-63% resin, 22%-23% curing agent, 3.5%-4.5% Adhesive, 2.5%-3.5% silane additives composition, configuring thin carborundum powder, resin, adhesive.
Described patching material first, first configures sic powder, and described carborundum point includes the carborundum of 0.1mm mesh 22%-24%, 0.2mm carborundum 29%-31%, 0.01mm carborundum 11%-13%, 0.03mm carborundum 20%-22% compositions, Secondly epoxy resin is adjusted in configuration, and described epoxy resin includes 59%-61% resin, 24%-21% curing agent, 4%-4.5%'s Adhesive, 3%-3.5% silane additives composition, is configuring thin carborundum powder, resin, adhesive.
Described diaphragm, diaphragm is by ceramic component 65%-70% resin, 25%-28% curing agent, 3%-5% glue Glutinous agent, 2%-4% silane additives, 0.01mm carborundum 3%-6%, 0.03mm carborundum 2%-3% compositions.
Described diaphragm, diaphragm is by the resin of ceramic component 65%, 25% curing agent, 3% adhesive, 2% silicon Alkane additive, 0.01mm carborundum 3%, 0.03mm carborundum 2% form.
Described diaphragm, diaphragm is by the resin of ceramic component 70%, 28% curing agent, 5% adhesive, 4% silicon Alkane additive, 0.01mm carborundum 6%, 0.03mm carborundum 3% form.
Silicon carbide composite ceramic materials feature:
Project Unit parameter
Density g/cm3 2.7
Brinell hardness HB 920
Tensile strength MPa 720
Elastic modulus G Pa 730
Compression strength MPa 7250
Bending strength MPa 750
Conversion temperature DEG C 210
Thermal conductivity factor w/m.k 1.5
Chemical resistance:Suitable for any environment of pH value 1~14
Adaptive temperature:≤140℃
Pass through granular size:≤ 6mm solve general ceramic material fragility it is high and it is frangible the shortcomings that
Solid content:≤50%
Wearability:Compared by wear test, it was demonstrated that the wearability of carbofrax material is the 3.5 of high-chromium alloy (Cr30A) cast iron Times.
Shock resistance is good:Magnetic interference can be effectively prevented, and reduces noise and reduces and vibrate;
Service life:Pump class product, the life-span of silicon carbide ceramics pump flow passage components are all higher very than high-chromium wear-resistant alloy Cr30A It is more;
The part name material life-span
The 30000h of the pump housing 2605
Silicon carbide ceramics 150000h
Cr30A 50000h
Impeller Cr30A, Cr26 20000h
Silicon carbide ceramics 60000h
Wearing plate Cr30A 20000h
Silicon carbide ceramics 60000h

Claims (4)

  1. A kind of 1. pump restorative procedure of wearing piece macromolecule composite silicon carbide ceramic material, it is characterised in that:
    (1)Surface irregularities processing:Cleaning treatment, acetone are carried out with special tools for cleaning rust and high pressure water washing impeller surface pollutant Cleaning removes all acid-base materials and debris on surface, until the metal true qualities of raw material show completely, while carries out machinery Appearance and size detects;
    (2)To gap portions welding metal skeleton trained shape, while the enhancing in repairing structure is realized, and for impeller gold Matrix is necessary gets or draw ditch ready for category, and the skeleton of stainless steel mesh is fixed on impeller front and rear cover plate by the way of being mechanically fixed On blade;
    (3)Nondestructive inspection before impeller is repaired, check that there is the defects of flawless at impeller each position, and it is good to carry out repair process, then enter The final nondestructive inspection of row, checks whether impeller has new crack defect, until defect, which all eliminates, can just carry out next process;
    (4)Processing is machined out to damage in impeller position, ensures coating layer thickness, eliminates uneven influence, thickness of cutting important affair First design, the intensity of metal should be ensured, ensure the certain thickness of lining ceramics again, the two will take into account;
    (5)The metal surface at position need not be repaired by being encased with rubber, to protect it from being damaged;
    (6)Then position need to be repaired to impeller and carries out sandblast, the roughness after sandblasting reaches 10-50 μm, enhancing impeller gold Metal surface roughness, it is easy to pour into a mould, coats macromolecule composite silicon carbide ceramic;
    (7)Using the surface with the cleaning sandblasting of volatility cleaning agent, cleaned up and keep cleannes;
    (8)The configuration of patching material first, patching material uniform stirring 10-20 minutes are fabricated to close grain intermixture, thin Texture blend agent, which is evenly coated in impeller, need to repair position, treat its solidification, and patching material uniform stirring a few minutes are fabricated into coarse groove Intermixture is managed, open grain intermixture, which is evenly coated in impeller, need to repair position, treat its solidification;
    (9)Baking oven is heat-treated:Reparation part is placed in airtight oven, 2-4 hours are kept under 60-80 DEG C of constant temperature, eliminate material Expect internal stress;
    (10)Impeller solidification repairing position polish flat, it is smooth, cleaned up;
    (11)To there is the position of dimension precision requirement to carry out secondary machine, ensure that ceramic repair member reaches the size essence of metalwork Degree requires;
    (12)Secondary patching material is prepared, secondary patching material uniform stirring a few minutes are fabricated to close grain intermixture, thin Texture blend agent is evenly coated in impeller repairing position, treats its solidification;
    (13)Upper protective film is finally applied, treats that its solidification reaches intensity;
    (14)Procuratorial work reparation position is complete, and impeller does static and dynamic equilibrium experiment;
    (15)Last temper, in airtight oven, 1-2 hours are kept under 60 DEG C of constant temperature, reach final curing molding;
    (16)Carry out wooden case, shipping list, packaging delivery.
  2. 2. a kind of pump according to claim 1 restorative procedure of wearing piece macromolecule composite silicon carbide ceramic material, its It is characterised by:Described patching material first, first configures sic powder, and described carborundum point includes the carbonization of 0.1mm mesh Silicon 18%-28%, 0.2mm carborundum 25%-35%, 0.01mm carborundum 7%-17%, 0.03mm carborundum 16%-26% groups Into epoxy resin is adjusted in secondly configuration, and described epoxy resin includes 55%-65% resin, 20%-25% curing agent, 3%-5%'s Adhesive, 2%-4% silane additives composition, is configuring thin carborundum powder, resin, adhesive.
  3. 3. a kind of pump according to claim 1 restorative procedure of wearing piece macromolecule composite silicon carbide ceramic material, its It is characterised by:Described patching material first, first configures sic powder, and described carborundum point includes the carbonization of 0.1mm mesh Silicon 20%-26%, 0.2mm carborundum 27%-33%, 0.01mm carborundum 9%-15%, 0.03mm carborundum 18%-24% groups Into epoxy resin is adjusted in secondly configuration, and described epoxy resin includes 57%-63% resin, 22%-23% curing agent, 3.5%- 4.5% adhesive, 2.5%-3.5% silane additives composition, is configuring thin carborundum powder, resin, adhesive.
  4. 4. a kind of pump according to claim 1 restorative procedure of wearing piece macromolecule composite silicon carbide ceramic material, its It is characterised by:Described patching material first, first configures sic powder, and described carborundum point includes the carbonization of 0.1mm mesh Silicon 22%-24%, 0.2mm carborundum 29%-31%, 0.01mm carborundum 11%-13%, 0.03mm carborundum 20%-22% groups Into epoxy resin is adjusted in secondly configuration, and described epoxy resin includes 59%-61% resin, 24%-21% curing agent, 4%-4.5% Adhesive, 3%-3.5% silane additives composition, configuring thin carborundum powder, resin, adhesive.
CN201711020817.5A 2017-10-27 2017-10-27 A kind of restorative procedure of pump wearing piece macromolecule composite silicon carbide ceramic material Pending CN107790955A (en)

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CN108942078A (en) * 2018-08-31 2018-12-07 沃德传动(天津)股份有限公司 A kind of speed reducer wear of end cover restorative procedure
CN109093321A (en) * 2018-08-31 2018-12-28 沃德传动(天津)股份有限公司 A kind of reductor shaft bearing bore restorative procedure
CN109093320A (en) * 2018-08-31 2018-12-28 沃德传动(天津)股份有限公司 A kind of speed reducer labyrinth disc restorative procedure
CN109627045A (en) * 2018-12-11 2019-04-16 宁波伏尔肯科技股份有限公司 The original position of micro-crack makes method up after a kind of grinding of silicon carbide ceramics
CN110539125A (en) * 2019-09-03 2019-12-06 齐齐哈尔众工科技有限公司 method for repairing slurry circulating pump
CN111843373A (en) * 2020-07-27 2020-10-30 云南联合电力开发有限公司 Method for improving abrasion damage rapid cold repair strength of flow passage component of water turbine
CN112479715A (en) * 2020-12-11 2021-03-12 山田研磨材料有限公司 Silicon carbide ceramic re-sintering repair process
CN112935702A (en) * 2021-03-19 2021-06-11 重庆鸿庆达产业有限公司 Repairing method of calcium carbide pot
CN114161076A (en) * 2021-12-17 2022-03-11 扬州博格达流体陶瓷科技有限公司 Repair process of high-molecular composite silicon carbide stirrer blade
CN114380538A (en) * 2021-10-13 2022-04-22 聂鹏飞 Preparation and application methods of silicon carbide material for repairing heavy equipment of thermal power plant

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