CN106350815A - Repairing process for flow passage component surface of slurry pump - Google Patents
Repairing process for flow passage component surface of slurry pump Download PDFInfo
- Publication number
- CN106350815A CN106350815A CN201611011167.3A CN201611011167A CN106350815A CN 106350815 A CN106350815 A CN 106350815A CN 201611011167 A CN201611011167 A CN 201611011167A CN 106350815 A CN106350815 A CN 106350815A
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- China
- Prior art keywords
- flow passage
- passage component
- component surface
- slurry
- passage components
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a repairing process for a flow passage component surface of a slurry pump. The process comprises the following steps of: (1) performing sandblasting coarsing on the to-be-repaired flow passage component surface; (2) washing the flow passage component surface subjected to sandblasting coarsing with acetone and ethanol, and then drying the flow passage component surface; (3) uniformly mixing mixed powder which contains 20-45wt% of TiN ceramic particles, 5-15wt% of Si3N4 nano particles and the balance of NiCrMoSiB powder alloy, epoxy resin serving as an adhesive and a curing agent, so as to form a slurry; (4) coating the slurry on the washed and dried flow passage component surface subjected to sandblasting coarsing so as to ensure that the surface is uniform and the coating thickness is not less than 0.5mm, and drying the flow passage component surface at a temperature of 80-120 DEG C; (5) overlapping by use of laser, so as to form a TiN-Si3N4-NiCrMoSiB ceramic coating on the to-be-repaired flow passage component surface. By virtue of selecting a specific wear-resistant corrosion-resistant material and adopting a laser strengthening process, the flow passage component surface is repaired, and the whole flow passage component surface is strengthened, so that the anti-corrosion and wear-resistant properties of the flow passage component surface are enhanced.
Description
Technical field
The present invention relates to field of material technology, more particularly, to a kind of flow passage component of slurry pump skin patching technique.
Background technology
Adopting toughness material centrifugal type slurry pump abrasive wear and corrosivity abrasion centrifugal type slurry pump flow passage components more, its
The synergic wear that flow dynamics abrasive wear is made up of micro-ploughing and formation abrasion.Centrifugal type slurry pump runs well
During, the fluidised form flowing through in the biphase slurry of liquid defecation of flow passage components is turbulent condition, solid particle (coal, spoil, magnetic in slurry
Iron Ore Powder) shape be in random orientation.
Impact the solid particle on flow passage components surface with low-angle, when contacting with surface with wedge angle, in contact point very little
Very high surge will be produced on area, the vertical component of surge makes solid particle press people's material surface, surge
Horizontal component make its along be roughly parallel to flow passage components surface direction move, make material surface contact point produce horizontal plastic property
Deformation, thus cutting out a certain amount of micro-volume material, causes the micro-ploughing of flow passage components.
The solid particle on flow passage components surface is impacted under the vertical component of surge acts on high attack angle, makes solid
Grain pressure people's material surface forms elastic-plastic deformation, to granule stops press-in motion, ultimately forms irreclaimable plasticity and becomes
Shape-impact dent, has the material stacking thing of plastic deformation extrusion in pit edge.Impact pit edge deposit will be squeezed again
Deform and shift and peel off from material surface, cause a certain amount of micro-volume material unaccounted-for (MUF), cause the formation abrasion of flow passage components.
Simultaneously as containing various corrosive liquids in the fluid of Pulp pump process, therefore can be rotten on flow passage components surface
Erosion causes indenture, erosional surface etc..
Content of the invention
It is an object of the invention to proposing a kind of flow passage component of slurry pump skin patching technique, can be by described flow passage components
Surface is repaired.
For reaching this purpose, the present invention employs the following technical solutions:
A kind of flow passage component of slurry pump skin patching technique, comprising:
(1) sandblasting roughening is carried out to flow passage components surface to be repaired；
(2) by the flow passage components surface acetone after described sandblasting roughening and washing with alcohol, it is dried；
(3) tin ceramic particle is accounted for 20-45wt%, si3n4Nano-particle accounts for 5-15wt%, nicrmosib powder metallurgy
Surplus mixed-powder, the epoxy resin as adhesive and firming agent mix homogeneously, form slurry；
(4) described slurry is coated in the flow passage components surface after washing dried sandblasting roughening, so that surface is equal
Even, and coating thickness is not less than 0.5mm, is dried at 80-120 DEG C；
(5) overlapped with laser, described laser transformation process conditions include: laser power 1200-2000w, scanning speed
Degree 600-1000mm/min, spot diameter 4-8mm, overlapping rate 15-25%, form tin- on flow passage components surface to be repaired
si3n4- nicrmosib silicate lining layer.
The present invention passes through in the one layer of slurry of the flow passage components surface-coated being abraded that be corroded, and various corruption filled up by described slurry
Erosion pit or crack, and form smooth appearance on whole flow passage components surface.By laser reinforcing, in dried slurry
Tin, nicrmosib melt and penetrate into flow passage components matrix, and described pit and crack are filled up smooth.Do not have corrosion or abrasion
Position, is also infiltrated tin ceramic particle, nicrmosib powder metallurgy forms hardening coat, plays a protective role.In slurry
Epoxy resin and firming agent, carbonization in laser strengthening, form carbide with part metals, enhance its erosion resistant and resistance to
Corrosive nature.Not by the epoxy resin of carbonization, hardness is bigger itself, can also serve as abrasion resistant materials and use.
Nicrmosib powder metallurgy of the present invention, its composition percentage composition by weight includes cr 10-15%, ni
3-7%, mo 2-6%, si 1-5%, b 2-4%, surplus ni.
Preferably, tin ceramic particle accounts for 30-40wt%, further preferred 35wt%.
The wear-resistant coating that the present invention prepares, goes to form metallurgical binding with matrix, bond strength is more than 600mpa, coating
For the as cast condition crystalline structure of even tissue, dense non-porous, its coating hardness is up to more than 80 Rockwell hardness, service life compared to
Blade without coating extends more than 6-7 times, and anti-cavitation ability improves more than 10 times.
The organic binder epoxy resin that the present invention adopts, as long as its content plays cementation, by described tin pottery
Grain, si3n4Nano-particle and nicrmosib powder metallurgy mixed-powder are bonded to flow passage components matrix surface, and its consumption is
How excessive 20%.
The content of described firming agent, as long as solidification can be played, typically somewhat excessive, but will not excessive 20%.
Described repair after flow passage components, through erosion speed be 10m/s, erosion angle be 70 °, the erosion time be continuous 48 little
After Shi Lianxu erosive wear, its volume wear is 20% about of the flow passage components without coating, entirely fills up simultaneously
Coating surface complete, there is no peeling.
The present invention passes through from specific erosion resistant resistant material, by laser reinforcing process, has repaired flow passage components
Surface, and whole flow passage components surface is strengthened, increased its corrosion-resistant and wear-corrosion resistance.
Specific embodiment
To further illustrate technical scheme below by specific embodiment.
Embodiment 1
A kind of flow passage component of slurry pump repair technology, comprising:
(1) sandblasting roughening is carried out to flow passage components surface to be repaired；
(2) by the flow passage components surface acetone after described sandblasting roughening and washing with alcohol, it is dried；
(3) tin ceramic particle is accounted for 20wt%, si3n4Nano-particle accounts for 15wt%, nicrmosib powder metallurgy surplus and mixes
Close powder, the epoxy resin as adhesive and firming agent mix homogeneously, form slurry；
(4) described slurry is coated in the flow passage components surface after washing dried sandblasting roughening, so that surface is equal
Even, and coating thickness is not less than 0.5mm, is dried at 80 DEG C；
(5) overlapped with laser, described laser transformation process conditions include: laser power 1200w, scanning speed
600mm/min, spot diameter 4mm, overlapping rate 15%, form tin-si on flow passage components surface to be repaired3n4- nicrmosib makes pottery
Porcelain cover layer.
Embodiment 2
A kind of flow passage component of slurry pump repair technology, comprising:
(1) sandblasting roughening is carried out to flow passage components surface to be repaired；
(2) by the flow passage components surface acetone after described sandblasting roughening and washing with alcohol, it is dried；
(3) tin ceramic particle is accounted for 45wt%, si3n4Nano-particle accounts for 5wt%, nicrmosib powder metallurgy surplus and mixes
Close powder, the epoxy resin as adhesive and firming agent mix homogeneously, form slurry；
(4) described slurry is coated in the flow passage components surface after washing dried sandblasting roughening, so that surface is equal
Even, and coating thickness is not less than 0.5mm, is dried at 120 DEG C；
(5) overlapped with laser, described laser transformation process conditions include: laser power 2000w, scanning speed
1000mm/min, spot diameter 8mm, overlapping rate 25%, form tin-si on flow passage components surface to be repaired3n4-nicrmosib
Silicate lining layer.
Embodiment 3
A kind of flow passage component of slurry pump repair technology, comprising:
(1) sandblasting roughening is carried out to flow passage components surface to be repaired；
(2) by the flow passage components surface acetone after described sandblasting roughening and washing with alcohol, it is dried；
(3) tin ceramic particle is accounted for 35wt%, si3n4Nano-particle accounts for 10wt%, nicrmosib powder metallurgy surplus and mixes
Close powder, the epoxy resin as adhesive and firming agent mix homogeneously, form slurry；
(4) described slurry is coated in the flow passage components surface after washing dried sandblasting roughening, so that surface is equal
Even, and coating thickness is not less than 0.5mm, is dried at 100 DEG C；
(5) overlapped with laser, described laser transformation process conditions include: laser power 1600w, scanning speed
800mm/min, spot diameter 6mm, overlapping rate 20%, form tin-si on flow passage components surface to be repaired3n4- nicrmosib makes pottery
Porcelain cover layer.
Described in embodiment 1-3 repair after flow passage components, through erosion speed be 10m/s, erosion angle be 70 °, erosion time
After continuous erosive wear in continuous 48 hours, its volume wear is 20% about of the flow passage components without coating, with
When the coating surface entirely filled up complete, there is no peeling.
Claims (1)
1. a kind of flow passage component of slurry pump skin patching technique, comprising:
(1) sandblasting roughening is carried out to flow passage components surface to be repaired；
(2) by the flow passage components surface acetone after described sandblasting roughening and washing with alcohol, it is dried；
(3) tin ceramic particle is accounted for 20-45wt%, si3n4Nano-particle accounts for 5-15wt%, nicrmosib powder metallurgy surplus
Mixed-powder, the epoxy resin as adhesive and firming agent mix homogeneously, form slurry；
(4) described slurry is coated in the flow passage components surface after washing dried sandblasting roughening, so that surface is uniformly, and
Coating thickness is not less than 0.5mm, is dried at 80-120 DEG C；
(5) overlapped with laser, described laser transformation process conditions include: laser power 1200-2000w, scanning speed
600-1000mm/min, spot diameter 4-8mm, overlapping rate 15-25%, form tin-si on flow passage components surface to be repaired3n4-
Nicrmosib silicate lining layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611011167.3A CN106350815A (en) | 2016-11-17 | 2016-11-17 | Repairing process for flow passage component surface of slurry pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611011167.3A CN106350815A (en) | 2016-11-17 | 2016-11-17 | Repairing process for flow passage component surface of slurry pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106350815A true CN106350815A (en) | 2017-01-25 |
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ID=57861951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611011167.3A Pending CN106350815A (en) | 2016-11-17 | 2016-11-17 | Repairing process for flow passage component surface of slurry pump |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1147565A (en) * | 1996-06-06 | 1997-04-16 | 西安交通大学 | Metal-carbide coating preventing superheater of power station boiler from heat corrosion |
| CN101492749A (en) * | 2008-01-24 | 2009-07-29 | 宝山钢铁股份有限公司 | Tuyeres of blast furnace surface recombination coating and method for preparing the same |
| CN102560316A (en) * | 2011-12-29 | 2012-07-11 | 上海鼓风机厂有限公司 | Process for performing ultrasonic spray of composite coatings on surface of fan blade |
| CN103628055A (en) * | 2013-11-15 | 2014-03-12 | 桂林电子科技大学 | Process of laser-cladding rare earth CeO2-nickel-based alloy composite coating on surface of aluminum or aluminum alloy |
-
2016
- 2016-11-17 CN CN201611011167.3A patent/CN106350815A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1147565A (en) * | 1996-06-06 | 1997-04-16 | 西安交通大学 | Metal-carbide coating preventing superheater of power station boiler from heat corrosion |
| CN101492749A (en) * | 2008-01-24 | 2009-07-29 | 宝山钢铁股份有限公司 | Tuyeres of blast furnace surface recombination coating and method for preparing the same |
| CN102560316A (en) * | 2011-12-29 | 2012-07-11 | 上海鼓风机厂有限公司 | Process for performing ultrasonic spray of composite coatings on surface of fan blade |
| CN103628055A (en) * | 2013-11-15 | 2014-03-12 | 桂林电子科技大学 | Process of laser-cladding rare earth CeO2-nickel-based alloy composite coating on surface of aluminum or aluminum alloy |
Non-Patent Citations (1)
| Title |
|---|
| 覃峰等: "《陶瓷/金属复合耐磨涂层的微观结构与磨损性能分析》", 《中国表面工程》 * |
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Application publication date: 20170125 |