CN102398126A - Alumina ceramic thermal spraying flux-cored wire - Google Patents
Alumina ceramic thermal spraying flux-cored wire Download PDFInfo
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- CN102398126A CN102398126A CN2011103633731A CN201110363373A CN102398126A CN 102398126 A CN102398126 A CN 102398126A CN 2011103633731 A CN2011103633731 A CN 2011103633731A CN 201110363373 A CN201110363373 A CN 201110363373A CN 102398126 A CN102398126 A CN 102398126A
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- cored wire
- flux
- spraying
- thermal spraying
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Abstract
The invention discloses an alumina ceramic thermal spraying flux-cored wire, which comprises the following chemical compositions in percentage by weight: 85-95 percent of Al2O3, 2-5 percent of Ni powder, 1-5 percent of La2O3 and 2-5 percent of graphite, wherein the powder granularity is -120 meshes to 80 meshes. The ceramic flux-cored wire of which the outer diameter is F4-F6 is prepared by putting raw materials into a stirrer, uniformly mixing, and curling and drawing with flux-cored wire production equipment, wherein an outer layer is made of a H08 low-carbon steel belt. When the flux-cored wire is in use, the spraying distance is controlled at 80-120 millimeters, and the coating thickness is 0.1-0.4 millimeter. The alumina ceramic thermal spraying flux-cored wire has the advantages of low cost, high bonding strength up to 20-25 MPa between a spraying costing and a low-carbon substrate, high hardness 800-1,200 HV of the spraying coating within a certain spraying distance, and high abrasive resistance.
Description
Technical field
The present invention relates to a kind of plasma spray technology, particularly ceramic flux-cored wire plasma spray technology.
Background technology
Thermal spraying is class methods of preparation coating, has become material surface protection and one of new technology of strengthening, and it is to utilize thermal source with sprayed on material heat fused or softening, is ejected into matrix surface with certain speed, forms coating.Its matrix almost can be various materials; Comprise organic materials such as inorganic material such as metal, pottery, glass and plastics, timber, paper, cloth; And do not limit workpiece size, and arrive iron tower, bridge greatly, all can adopt thermal spraying to prepare coating for a short time to machine components.Sprayed on material can be a metal material, also can be Inorganic Non-metallic Materials and Ceramic-to-Metal composites such as pottery.
At present, ceramic thermal spray mainly adopts powder spraying, solid core welding wire spraying and ceramic rod spraying.Powder spraying is because powder feeding is inhomogeneous, unstable, and the fusing degree is inhomogeneous, sprays to cause half-cookedly on the matrix, and anchoring strength of coating is low, and the heat energy utilization rate is low, and deposition efficiency is low, and the porosity is high.The used solid core welding wire of solid core welding wire spraying needs melting and rolling, and manufacturing process is complicated, and composition is changeless.The ceramic rod spraying needs often to change ceramic rod, and inefficiency is difficult to realize automation, and influences coating quality because ceramic rod does not have the tip of fusing to be sprayed onto coating surface, and waste is big.
At present, domestic still do not have an Al
2O
3The ceramic thermal spray flux-cored wire, external Russia and the French report that associated production ceramic thermal spray flexible cord is arranged, rather than ceramic thermal spray flux-cored wire.
Summary of the invention
The object of the present invention is to provide the aluminium oxide ceramics thermal spraying flux-cored wire that a kind of cost is low, bond strength is high.The present invention mainly is with Al
2O
3Be main coating material, with Ni powder, La
2O
3With graphite be the thermal spraying pottery flux-cored wire of auxiliary material.
Ceramic flux-cored wire of the present invention, the mass percent (wt%) of its medicine core chemical composition is: Al
2O
385-95, Ni powder 2-5, La
2O
31-5, graphite 2-5, powder size is-120 ~+80 orders.Above-mentioned raw materials is put into mixer mix, crust adopts H08 mild steel steel band, adopts the flux-cored wire production equipment, goes out the ceramic flux-cored wire that external diameter is F4-F6 through curling, drawing, and the medicinal powder filling rate is 40%.Spray distance is controlled at 80-120mm during use, and coating layer thickness is 0.1-0.4mm.
The higher Al of the present invention's pottery flux-cored wire control
2O
3Content generates Al after spraying
2O
3Surfaces coated
Layer guarantees that deposited metal has higher hardness, plays high temperature resistant, anti-oxidant, corrosion-resistant, the effect of resistance to wearing; The mild steel steel band dissolves in spraying process after be ejected into matrix surface, has excellent metallurgical with matrix surface and combines, and forms certain thickness binder course, has improved the bond strength between matrix and the ceramic layer; Add the Ni powder and can increase Al
2O
3The compactness of coating and toughness; Add a spot of graphite and can enter into binder course through metallurgical process on the one hand, play the effect of carburetting, improve the intensity of binder course at binder course; On the other hand at high temperature, the effect of deoxidier is played in graphite and oxygen reaction; Simultaneously; The adding of graphite can also improve the flowability of raw material at drawing process, makes the flux-cored wire in the drawing process easily deformable, avoids the generation of card silk, fracture of wire phenomenon; Add a spot of La
2O
3Microscopic structure that can the refinement binder course has strengthened Al
2O
3And the adhesion between the low carbon steel substrate.
The present invention compared with prior art has following advantage:
1, the preparation method is simple, and cost is low.
2, have bigger bond strength between spray-on coating and the low carbon steel substrate and reach 20-25MPa, spray-on coating has higher hardness, reaches 800-1200HV, and has higher wearability,
3, adopt Al of the present invention
2O
3The ceramic thermal spray flux-cored wire can be repaired axle, the tooth type component scrapped, recovers its size, shape, and obtains more excellent mechanics of surface performance, particularly has higher decay resistance, thereby makes it have higher service life.
The specific embodiment
Embodiment 1:
Get Al
2O
395kg, Ni powder 2 kg, La
2O
31 kg, graphite 2kg.Powder size is-120 ~+80 orders.Above-mentioned raw materials is put into mixer mix, crust adopts H08 mild steel steel band, adopts the flux-cored wire production equipment, goes out the ceramic flux-cored wire that external diameter is F6 through curling, drawing, and the medicinal powder filling rate is 40%.Spray distance is controlled at 120mm during use, and coating layer thickness is 0.1mm.The spray-on coating of this pottery flux-cored wire and the bond strength between the low carbon steel substrate are 20MPa, and spray-on coating hardness is 1200HV.
Embodiment 2:
Get Al
2O
390 kg, Ni powder 4 kg, La
2O
32 kg, graphite 4kg.Powder size is-120 ~+80 orders.Above-mentioned raw materials is put into mixer mix, crust adopts H08 mild steel steel band, adopts the flux-cored wire production equipment, goes out the ceramic flux-cored wire that external diameter is F5 through curling, drawing, and the medicinal powder filling rate is 40%.Spray distance is controlled at 100mm during use, and coating layer thickness is 0.2mm.The spray-on coating of this pottery flux-cored wire and the bond strength between the low carbon steel substrate are 22MPa, and spray-on coating hardness is 1000HV.
Embodiment 3:
Get Al
2O
385 kg, Ni powder 5 kg, La
2O
35 kg, graphite 5kg.Powder size is-120 ~+80 orders.Above-mentioned raw materials is put into mixer mix, crust adopts H08 mild steel steel band, adopts the flux-cored wire production equipment, goes out the ceramic flux-cored wire that external diameter is F4 through curling, drawing, and the medicinal powder filling rate is 40%.Spray distance is controlled at 80mm during use, and coating layer thickness is 0.4 mm.The spray-on coating of this pottery flux-cored wire and the bond strength between the low carbon steel substrate are 25MPa, and spray-on coating hardness is 800HV.
Claims (3)
1. aluminium oxide ceramics thermal spraying flux-cored wire, it is characterized in that: the percentage by weight of its chemical composition is wt%:Al
2O
385-95, Ni powder 2-5, La
2O
31-5, graphite 2-5.
2. a kind of aluminium oxide ceramics thermal spraying flux-cored wire according to claim 1, it is characterized in that: the powder size of above-mentioned raw materials is-120 ~+80 orders.
3. the method for using of above-mentioned aluminium oxide ceramics thermal spraying flux-cored wire, it is characterized in that: spray distance is controlled at 80-120mm, and coating layer thickness is 0.1-0.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103633731A CN102398126A (en) | 2011-11-16 | 2011-11-16 | Alumina ceramic thermal spraying flux-cored wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103633731A CN102398126A (en) | 2011-11-16 | 2011-11-16 | Alumina ceramic thermal spraying flux-cored wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102398126A true CN102398126A (en) | 2012-04-04 |
Family
ID=45880997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103633731A Pending CN102398126A (en) | 2011-11-16 | 2011-11-16 | Alumina ceramic thermal spraying flux-cored wire |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286475A (en) * | 2013-03-08 | 2013-09-11 | 秦皇岛威尔德特种焊业有限责任公司 | Flux-cored wire for surfacing repair and cold hardening resistance for hot rolled support roll |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000355752A (en) * | 1999-06-16 | 2000-12-26 | Nippon Steel Hardfacing Co Ltd | Sprayed ceramic coating applied on surface of movable parts |
| WO2005026069A1 (en) * | 2003-09-05 | 2005-03-24 | 3M Innovative Properties Company | Methods of making alumina-silica glasses or glass-ceramics |
| CN101280405A (en) * | 2008-04-30 | 2008-10-08 | 中国科学院上海硅酸盐研究所 | Lanthanum oxide-aluminum oxide composite coating prepared by plasma spraying method |
| CN101280404A (en) * | 2007-04-03 | 2008-10-08 | 胡忠辉 | Spraying electrostatic dispersion ceramic and preparation technology thereof |
| CN102166652A (en) * | 2011-03-30 | 2011-08-31 | 北京科技大学 | Preparation method of titanium carbide-based cermet powder material for thermal spraying |
-
2011
- 2011-11-16 CN CN2011103633731A patent/CN102398126A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000355752A (en) * | 1999-06-16 | 2000-12-26 | Nippon Steel Hardfacing Co Ltd | Sprayed ceramic coating applied on surface of movable parts |
| WO2005026069A1 (en) * | 2003-09-05 | 2005-03-24 | 3M Innovative Properties Company | Methods of making alumina-silica glasses or glass-ceramics |
| CN101280404A (en) * | 2007-04-03 | 2008-10-08 | 胡忠辉 | Spraying electrostatic dispersion ceramic and preparation technology thereof |
| CN101280405A (en) * | 2008-04-30 | 2008-10-08 | 中国科学院上海硅酸盐研究所 | Lanthanum oxide-aluminum oxide composite coating prepared by plasma spraying method |
| CN102166652A (en) * | 2011-03-30 | 2011-08-31 | 北京科技大学 | Preparation method of titanium carbide-based cermet powder material for thermal spraying |
Non-Patent Citations (3)
| Title |
|---|
| 栗卓新等: "高速电弧喷涂Fe-TiO2/ Al2O3复合涂层的组织及性能", 《中国有色金属学报》, 30 November 2005 (2005-11-30) * |
| 郭面焕等: "曲轴表面改性用金属陶瓷电弧喷涂药芯丝材的研制", 《焊接学报》, 31 March 2006 (2006-03-31) * |
| 颜建辉等: "氧化镧掺杂对等离子喷涂Al2O3-40%TiO2涂层组织和耐磨性能的影响", 《润滑与密封》, 30 April 2008 (2008-04-30) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286475A (en) * | 2013-03-08 | 2013-09-11 | 秦皇岛威尔德特种焊业有限责任公司 | Flux-cored wire for surfacing repair and cold hardening resistance for hot rolled support roll |
| CN103286475B (en) * | 2013-03-08 | 2015-09-16 | 秦皇岛威尔德特种焊业有限责任公司 | A kind of flux-cored wire for hot-rolling supporting roll Bead weld repair and anti-flow harden |
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Application publication date: 20120404 |