CN101597736A - A kind of high hardness erosion resistance cored wire that adds norbide - Google Patents
A kind of high hardness erosion resistance cored wire that adds norbide Download PDFInfo
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- CN101597736A CN101597736A CNA2009100885292A CN200910088529A CN101597736A CN 101597736 A CN101597736 A CN 101597736A CN A2009100885292 A CNA2009100885292 A CN A2009100885292A CN 200910088529 A CN200910088529 A CN 200910088529A CN 101597736 A CN101597736 A CN 101597736A
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Abstract
The invention belongs to the field of thermal spray in the Materials Processing Engineering.The composition quality percentage composition scope of the powder core of the high hardness erosion resistance cored wire of interpolation norbide provided by the present invention is as follows: B
4C:10～30%, Cr
3C
2: 18～30%, ferro-boron: 10～20%, high carbon ferro-chrome: 0～13%, aluminium: 0～5%, chromium metal: 15～25%, metallic nickel: 5～15%, rare earth: 0～4%.When adopting arc spray process that the powder cored filament material of interpolation norbide provided by the present invention is prepared into coating, the hardness height of coating, average HV
0.1＞1200, erosive wear resistance is good.
Description
Technical field
The present invention relates to a kind of metal material surface erosion resistance arc spraying powder core wire material, belong to the field of thermal spray in the Materials Processing Engineering.Powder cored filament material of the present invention is mainly used in the protection and the reparation of power station circular fluid bed pipeline.
Background technology
Circular fluid bed uses the high low grade coal of ash content in a large number, boiler tubing is in the severe environment such as high temperature, flying dust, sulfuration, slag, contain a large amount of hard fly ash granules in the flue gas that is produced, when these fly ash granules wash away heating surface piping together along with flue gas, make tube wall attenuate even " booster ", cause leakage, have a strong impact on the security and the economic benefit of power station operation.It is too high to change the pipeline cost, by hot spray coating pipeline is protected, and not only can prolong pipeline life, and greatly reduce the expense of pipe-line maintenance.Wherein, electrical arc spraying method for preparing erosion-wear-resisting coating technology is low-cost and be easy to advantage such as site operation and become widely used hot-spraying techniques with it.But arc spraying filament material in the market is difficult to reach the requirement of the anti-erosion wearing and tearing of circular fluid bed heating surface, the hardness height that the coating of its preparation has, but fragility is big, and bulk is peeled off easily; What have has plasticity and toughness preferably, but hardness is low, and coating runs off easily under erosive wear, and effect is all undesirable.Therefore, be necessary to develop a kind of coating that has high rigidity and good plasticity simultaneously, satisfy the anti-erosion wearing and tearing requirement of circular fluid bed, prolong coating life, increase economic efficiency.
Summary of the invention
The object of the present invention is to provide a kind of high hardness erosion resistance wearing and tearing powder cored filament material that adds boron carbide ceramics, solve the erosive wear problem of circular fluid bed pipeline.
The composition and the quality percentage composition thereof of the powder core of the high hardness erosion resistance cored wire of interpolation norbide provided by the present invention are as follows:
B
4C:10～30%, Cr
3C
2: 18～30%, ferro-boron: 10～20%, high carbon ferro-chrome: 0～13%, aluminium: 0～5%, chromium metal: 15～25%, metallic nickel: 5～15%, rare earth: 0～4%.
Preparation method of the present invention adopts existing powder cored filament material technology of preparing, may further comprise the steps:
The 304L Stainless Steel Band of 10 * 0.3mm is rolled into the U type, add above-mentioned powder core composition again in U type groove, filling ratio is 30～35%.U type groove is healed up, make powder core composition parcel wherein,, finally make diameter reach 2.0mm by wortle drawing step by step, tube reducing.
When adopting arc spray process that powder cored filament material of the present invention is prepared into coating, the effect of each component is as follows:
B
4C: the Cr that generates high rigidity
2B
3, Fe
2B and Fe
7C
3Deng the hard phase, improve coating hardness and erosive wear resistance.Cr
3C
2: generate Cr
2B
3And Fe
7C
3Deng the hard phase, improve coating hardness, solidity to corrosion and erosion-wear-resisting performance.Ferro-boron: the Cr that generates high rigidity
2B
3And Fe
2Hard phases such as B improve coating hardness and erosion-wear-resisting performance.High carbon ferro-chrome: improve corrosion resistance coating and oxidation-resistance, generate the Cr of high rigidity
2B
3And Fe
7C
3Deng the hard phase, improve coating hardness and erosion-wear-resisting performance.Chromium metal: improve corrosion resistance coating and oxidation-resistance, generate the Cr of high rigidity
2B
3Deng the hard phase, improve coating hardness and erosion-wear-resisting performance.Metallic nickel: improve corrosion resistance coating and oxidation-resistance, increase Bond Strength of Coating.Metallic aluminium: improve corrosion resistance coating and oxidation-resistance, increase Bond Strength of Coating.Rare earth: improve coating erosion-wear-resisting performance, increase Bond Strength of Coating.
When adopting arc spray process that the powder cored filament material of interpolation norbide provided by the present invention is prepared into coating, contain more boride and carbide hard in the coating mutually, the disperse of hard phase is distributed in the coating, property that coating is had better mould and flexible are simultaneously, hardness increases substantially, and has improved the wear-resisting erosive wear resistance of coating.
Description of drawings
Fig. 1, the coating unit surface weight loss under 30 ° and the 90 ° of angles of attack in the time of 650 ℃ that adopts the powder cored filament material preparation among the embodiment 1-5.
The XRD figure of the coating of the powder cored filament material preparation among Fig. 2, the employing embodiment 3.
Embodiment
Embodiment 1-5
The 304L Stainless Steel Band of 10 * 0.3mm is rolled into the U type, in U type groove, add powder core composition again, U type groove is healed up, make powder core composition parcel wherein, by wortle drawing step by step, tube reducing, finally make diameter reach 2.0mm, the composition and the quality percentage composition thereof of the filling ratio of gained powder cored filament material and powder core are as shown in table 1.
The filling ratio of the powder cored filament material for preparing among the table 1 embodiment 1-5 and the composition of powder core and quality percentage composition
Adopt arc spray process that the powder cored filament material that obtains among the embodiment 1-5 is made coating, spraying parameter is: spraying current 150～180A, spray voltage 28～32V, spraying gaseous tension 0.5～0.6MPa, spray distance 150～180mm.And mensuration microhardness of coating and high temperature resistant erosive wear performance.
1) microhardness of coating adopts the digital microhardness tester of HXD-1000, and load is 100g, and loading time 15s gets at 10 in coatings cross-section and beats hardness, gets its mean value.Average hardness value sees Table in 2.The hardness height of coating as shown in Table 2, average HV
0.1＞1200.The reason that coating hardness is high mainly is the disperse more Cr that distributed in the coating as shown in Figure 2
2B
3, Fe
2B and Fe
7C
3Deng the hard phase.
2) the high temperature resistant erosive wear performance of coating sprays being of a size of on the 304L matrix of 25 * 10 * 2mm, coat-thickness 0.6～0.8mm, disclosed high-temperature erosion abrasion test device carries out the erosion experiment in the employing patent application 200910077010.4, gets the mean value of three sample weight losses under the same experimental conditions.Experiment parameter is as follows: 650 ℃ of temperature, and 30 ° of erosion angles and 90 are sent sand amount 300g/min, and speed 80m/s, erosion time 5min, sand grains are 16 purposes palm fibre corundum.Before and after experiment, sample is put into the beaker that fills acetone soln, use ultrasonic cleaning, estimate the erosion-wear-resisting performance of coating by the weight loss of unit surface before and after the erosion, and with engineering in the Cr that uses always
3C
2The erosion-wear-resisting performance of type coating compares, and its result as shown in Figure 1.With Cr
3C
2The weight loss of the coating that the weight loss of type coating and the powder cored filament material in adopting embodiment are made liken relative erosion-wear-resisting into this prescription, abrasion-resistance relatively to
Abrasion-resistance sees attached list 3 relatively.The relative abrasion-resistance of coating when 30 ° of erosion angles that adopts the powder cored filament material among the embodiment to make is Cr
3C
21.6～3.5 times of type coating, relative abrasion-resistance is Cr during 90 ° of erosion angles
3C
22.6～4.2 times of type coating.Explanation is under less erosion angle and big erosion angle, and the erosive wear resistance that adopts the coating that powder cored filament material of the present invention makes is all than Cr
3C
2The type coating is good.
The average Vickers' hardness of the coating that the powder cored filament material among the table 2 employing embodiment 1-5 is made
The relative abrasion-resistance of the coating that the powder cored filament material among the table 3 employing embodiment 1-5 is made
Claims (1)
1, a kind of high hardness erosion resistance cored wire that adds norbide is characterized in that, the composition and the quality percentage composition thereof of the powder core of described powder cored filament material are as follows: B
4C:10～30%, Cr
3C
2: 18～30%, ferro-boron: 10～20%, high carbon ferro-chrome: 0～13%, aluminium: 0～5%, chromium metal: 15～25%, metallic nickel: 5～15%, rare earth: 0～4%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100885292A CN101597736A (en) | 2009-07-03 | 2009-07-03 | A kind of high hardness erosion resistance cored wire that adds norbide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100885292A CN101597736A (en) | 2009-07-03 | 2009-07-03 | A kind of high hardness erosion resistance cored wire that adds norbide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101597736A true CN101597736A (en) | 2009-12-09 |
Family
ID=41419331
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|---|---|---|---|
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052300A (en) * | 2010-12-10 | 2011-05-11 | 四川中物科技集团有限公司 | Cylinder liner for mud pump and manufacturing method thereof |
| CN102400083A (en) * | 2011-11-16 | 2012-04-04 | 燕山大学 | Chromium carbide ceramic thermal-spraying flux-cored wire |
| CN102703849A (en) * | 2012-05-21 | 2012-10-03 | 北京工业大学 | Cored wire for preparing FeCrB coating through electric arc spraying and coating preparation method |
| CN103194711A (en) * | 2013-04-18 | 2013-07-10 | 北京工业大学 | Preparation methods of powder-cored wire for ferro-based coating with higher heat conductivity and coating |
| CN103233195A (en) * | 2013-04-25 | 2013-08-07 | 北京工业大学 | Powder-core wire for preparing iron-base corrosion-resistant coating by arc spraying and preparation method of coating |
| CN104162760A (en) * | 2014-08-01 | 2014-11-26 | 德清金烨电力科技有限公司 | CFB boiler water cooling wall abraded area repairing method |
| CN106141495A (en) * | 2016-07-28 | 2016-11-23 | 江苏科技大学 | A kind of polynary boride doping vario-property self-protecting flux-cored wire for hardfacing and preparation method thereof |
| CN106435573A (en) * | 2016-11-18 | 2017-02-22 | 无锡明盛纺织机械有限公司 | Preparation method of high-temperature-resistant and anti-abrasion coating layer of circulating fluidized bed boiler |
| CN106435454A (en) * | 2016-11-18 | 2017-02-22 | 无锡明盛纺织机械有限公司 | Preparation method of high temperature resistant abrasion resistant coating of circulating fluidized bed boiler |
| CN107164716A (en) * | 2017-06-13 | 2017-09-15 | 中国石油天然气集团公司 | A kind of powder cored filament material and the method for preparing high velocity stratum |
| CN108286030A (en) * | 2018-01-29 | 2018-07-17 | 北京工业大学 | A kind of powder cored filament material containing rare earth and coating production preparing iron-based wear-resistant coating for electric arc spraying |
| CN108642432A (en) * | 2018-07-06 | 2018-10-12 | 北京工业大学 | A kind of aluminium base contains B4C ceramic arcs spray powder cored filament material |
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2009
- 2009-07-03 CN CNA2009100885292A patent/CN101597736A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052300A (en) * | 2010-12-10 | 2011-05-11 | 四川中物科技集团有限公司 | Cylinder liner for mud pump and manufacturing method thereof |
| CN102400083A (en) * | 2011-11-16 | 2012-04-04 | 燕山大学 | Chromium carbide ceramic thermal-spraying flux-cored wire |
| CN102703849A (en) * | 2012-05-21 | 2012-10-03 | 北京工业大学 | Cored wire for preparing FeCrB coating through electric arc spraying and coating preparation method |
| CN103194711B (en) * | 2013-04-18 | 2015-10-14 | 北京工业大学 | A kind of preparation has the iron-based coating powder cored filament material of higher heat-conductivity and the preparation method of coating |
| CN103194711A (en) * | 2013-04-18 | 2013-07-10 | 北京工业大学 | Preparation methods of powder-cored wire for ferro-based coating with higher heat conductivity and coating |
| CN103233195A (en) * | 2013-04-25 | 2013-08-07 | 北京工业大学 | Powder-core wire for preparing iron-base corrosion-resistant coating by arc spraying and preparation method of coating |
| CN104162760A (en) * | 2014-08-01 | 2014-11-26 | 德清金烨电力科技有限公司 | CFB boiler water cooling wall abraded area repairing method |
| CN106141495A (en) * | 2016-07-28 | 2016-11-23 | 江苏科技大学 | A kind of polynary boride doping vario-property self-protecting flux-cored wire for hardfacing and preparation method thereof |
| CN106141495B (en) * | 2016-07-28 | 2018-07-27 | 江苏科技大学 | A kind of polynary boride doping vario-property self-protecting flux-cored wire for hardfacing and preparation method thereof |
| CN106435573A (en) * | 2016-11-18 | 2017-02-22 | 无锡明盛纺织机械有限公司 | Preparation method of high-temperature-resistant and anti-abrasion coating layer of circulating fluidized bed boiler |
| CN106435454A (en) * | 2016-11-18 | 2017-02-22 | 无锡明盛纺织机械有限公司 | Preparation method of high temperature resistant abrasion resistant coating of circulating fluidized bed boiler |
| CN107164716A (en) * | 2017-06-13 | 2017-09-15 | 中国石油天然气集团公司 | A kind of powder cored filament material and the method for preparing high velocity stratum |
| CN108286030A (en) * | 2018-01-29 | 2018-07-17 | 北京工业大学 | A kind of powder cored filament material containing rare earth and coating production preparing iron-based wear-resistant coating for electric arc spraying |
| CN108642432A (en) * | 2018-07-06 | 2018-10-12 | 北京工业大学 | A kind of aluminium base contains B4C ceramic arcs spray powder cored filament material |
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Open date: 20091209 |