CN104046979A - Spraying method of anti-nodular composite coating - Google Patents
Spraying method of anti-nodular composite coating Download PDFInfo
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- CN104046979A CN104046979A CN201410280797.5A CN201410280797A CN104046979A CN 104046979 A CN104046979 A CN 104046979A CN 201410280797 A CN201410280797 A CN 201410280797A CN 104046979 A CN104046979 A CN 104046979A
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Abstract
The invention discloses a spraying method of an anti-nodular composite coating. The method is characterized by comprising the following steps: a, spraying alloy powder on the surface of a basal body by utilizing spraying equipment so as to form an alloy layer; b, spraying first metal ceramic powder on the surface of the alloy layer by utilizing the spraying equipment so as to form a first metal ceramic layer; c, spraying second metal ceramic powder on the surface of the first metal ceramic layer so as to form a second metal ceramic layer. The method is simple in process; the spraying can be finished on the surface of a traditional furnace roller, i.e., the replacement of the furnace roller is not required, so that the machining and manufacturing cost of a steel factory is lowered. The spraying materials are powdery, so that the coating has the good thickness uniformity. Thus, the anti-nodular composite coating with abrasion resistance, high-temperature resistance, oxidization resistance, thermal shock resistance, anti-nodular performance and the like can be formed on the surface of the basal body. As a result, the quality of a steel plate manufactured by utilizing the furnace roller sprayed with the anti-nodular composite coating can be greatly improved.
Description
Technical field
The present invention relates to a kind of spraying method of resistive connection knurl compound coating.
Background technology
In recent years, along with the fast development of China's economic, we are being faced with by highly energy-consuming, expensive, low value-added product, towards transition and the upgrading of low power consuming, low cost, high value added product.Wherein follow growth in the living standard, the automobile demand amount of China significantly increases, and high-and middle-ranking car is the vertical production base in Huajian in succession, also increasing to the demand of high-end auto sheet, makes high-end cold-rolled steel sheet become the main raw material(s) of manufacturing auto sheet.This production unit to steel plate is had higher requirement.
Furnace roller is as the core component of steel plate continuous annealing furnace, in high temperature, at a high speed, in the harsh Working environment of reducing atmosphere, can the work that run well will directly determine the Performance and quality of steel plate.Furnace roller is high speed rotating at work, drives steel plate quick travel in stove, and this requires furnace roller to have good frictional coefficient, and suitable roughness, for steel band provides sufficient frictional force.Meanwhile, because steel band contacts with the continuous of roll body, also require roll body to there is good abrasion resistance properties.In the steel band course of processing, keep quite high temperature (top temperature can reach more than 1000 DEG C), this requires furnace roller to possess good high temperature resistance, oxidation resistant performance.Furnace roller, owing to exposing for a long time in stove, although there is gas shield, occurs that the possibility of oxidation is still larger, and after furnace roller surface is oxidized, surfaceness also can change thereupon, very unfavorable to producing high-quality steel plate.Owing to will being filled with appropriate reducing gas in work, this can make ferric oxide or the manganese oxide etc. of steel strip surface be reduced into the metal such as iron, manganese, and iron, manganese and furnace roller material (mostly being heat-resistance stainless steel) have very strong affinity, mutual solubility, easily be attached on and on roll surface, form buildup, be difficult to manual removal, must, by instrument as file, take time and effort.And along with furnace roller working temperature raises, dross and wearing and tearing also strengthen thereupon, the slip between furnace roller and steel plate also can promote dross to generate.When dross can make steel plate slippage cross roll surface, can on steel plate, leave pit, pull, the defect such as cut, thereby affect plate quality.
Summary of the invention
The object of the invention is in order to overcome deficiency of the prior art, a kind of resistive connection knurl compound coating is provided.
For realizing above object, the present invention is achieved through the following technical solutions:
Resistive connection knurl compound coating, is characterized in that, comprises at least three layers of coating, be respectively be coated on matrix surface alloy layer, be coated on first cermet coating on alloy layer surface and be coated on second cermet coating on the first cermet coating surface; Described alloy layer is made up of 50%～65% Co, 18%～28% Cr, 6%～12% Al, 0.2%～2% Y, 6%～12% Ta according to weight percent content; Described the first cermet coating is made up of 10%～15% Y2O3,48%～60% Co, 14%～26% Cr, 4%～10% Al, 0.2%～2% Y, 4%～10% Ta according to weight percent content; Described the second cermet coating is made up of 15%～20% CrB2,10%～15% Y2O3,35%～50% Co, 10%～18% Cr, 4%～8% Al, 0.2%～2% Y, 4%～8% Ta according to weight percent content.
Preferably, described matrix is annealing furnace roller.
Another object of the present invention is to provide a kind of spraying method of resistive connection knurl compound coating.
For achieving the above object, the present invention is achieved through the following technical solutions:
The spraying method of resistive connection knurl compound coating, is characterized in that, comprises the following steps:
A. adopt spraying equipment, the powdered alloy being made up of 50%～65% Co, 18%～28% Cr, 6%～12% Al, 0.2%～2% Y, 6%～12% Ta according to weight percent content is sprayed into matrix surface, forms the alloy layer of 1～20 μ m;
B. adopt spraying equipment, the first metal ceramic powder being made up of 10%～15% Y2O3,48%～60% Co, 14%～26% Cr, 4%～10% Al, 0.2%～2% Y, 4%～10% Ta according to weight percent content is sprayed into alloy layer surface, forms the first cermet coating of 10～30 μ m;
C. adopt spraying equipment, the second metal ceramic powder being made up of 15%～20% CrB2,10%～15% Y2O3,35%～50% Co, 10%～18% Cr, 4%～8% Al, 0.2%～2% Y, 4%～8% Ta according to weight percent content is sprayed into the first cermet coating surface, forms the second cermet coating of 10～30 μ m.
Preferably, described matrix is annealing furnace roller.
Another object of the present invention is to provide a kind of composite structure roller of resistive connection knurl.
For achieving the above object, the present invention is achieved through the following technical solutions:
Composite structure roller, is characterized in that, comprises matrix and is coated on the resistive connection knurl compound coating of matrix surface; Resistive connection knurl compound coating comprises at least three straton coatings, be respectively be coated on matrix surface alloy layer, be coated on first cermet coating on alloy layer surface and be coated on second cermet coating on the first cermet coating surface; Described alloy layer is made up of 50%～65% Co, 18%～28% Cr, 6%～12% Al, 0.2%～2% Y, 6%～12% Ta according to weight percent content; Described the first cermet coating is made up of 10%～15% Y2O3,48%～60% Co, 14%～26% Cr, 4%～10% Al, 0.2%～2% Y, 4%～10% Ta according to weight percent content; Described the second cermet coating is made up of 15%～20% CrB2,10%～15% Y2O3,35%～50% Co, 10%～18% Cr, 4%～8% Al, 0.2%～2% Y, 4%～8% Ta according to weight percent content.
Preferably, described matrix is annealing furnace roller.
Resistive connection knurl compound coating provided by the invention, has the performances such as wear-resistant, high temperature resistance, anti-oxidant, anti-thermal shock, resistive connection knurl, greatly improves the quality that adopts the steel plate that the furnace roller that is coated with this coating manufactures.On the other hand, also extend to some extent the work-ing life of furnace roller, and time expand is not less than 1/3 of original life-span, thereby has reduced the use cost of furnace roller.
Resistive connection knurl compound coating provided by the invention comprises three layers of coating, be respectively be coated on matrix surface alloy layer, be coated on first cermet coating on alloy layer surface and be coated on second cermet coating on cermet coating surface.Adopt directly coated matrix surface of stupalith, greatly improved the bonding force of coating and furnace roller, effectively avoid coating shedding, extend the work-ing life of furnace roller.
Prime coat using alloy layer as coated matrix surface; because alloy layer and body material match in the performance such as thermal conduction, thermal expansion; make between coating and matrix, to there is good bonding strength; guarantee that matrix (as furnace roller) uses rear coating also without coming off for a long time; extend the work-ing life of furnace roller, reduced the frequency of maintenance of furnace roller.
Using the second cermet coating as surface layer, in alloy, add stupalith, retain the excellent properties such as Alloy Anti high temperature, anti-oxidant, anti-thermal shock, wear-resistant, suitable roughness, there is the anti-noclulation that stupalith plays simultaneously.Especially, adding of B, Y element, makes coatingsurface form the oxide film of complete densification, further improves the high temperature resistance of coating, anti-oxidant, abrasion resistance properties, has extended the work-ing life of furnace roller, has reduced the frequency of maintenance of furnace roller.The more important thing is, adding of stupalith, reduce the affinity of coating to metal, delay or stop the generation of dross phenomenon, make coating there is the excellent properties of resistive connection knurl, avoid on steel plate, leaving pit while causing steel plate slippage to cross roll surface because of furnace roller surface cord, pull, cut, greatly improve the quality that is coated with the steel plate that the furnace roller of this coating manufactures.
One excessive layer is set between the second cermet coating and alloy layer, the first cermet coating.In the first cermet coating, stupalith content is lower than stupalith content in the second cermet coating.This excessive layer has the performance of alloy layer and the second metal level concurrently, guarantees the bonding strength of the second cermet coating and alloy layer, prevents that the second cermet coating from coming off, and has extended the work-ing life of furnace roller, has reduced the frequency of maintenance of furnace roller, saves human cost.
The spraying method of resistive connection knurl compound coating provided by the invention, technique is simple.Can complete spraying on traditional furnace roller surface, without changing furnace roller, reduce the processing and manufacturing cost of steel mill.Spray material is Powdered, makes coating have good thickness evenness.
Brief description of the drawings
Fig. 1 is the composite structure roller front view in the present invention;
Fig. 2 is the A-A sectional view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail:
As illustrated in fig. 1 and 2, be composite structure roller 1.Composite structure roller 1 comprises the resistive connection knurl compound coating 12 of matrix 11 and coated matrix surface.Matrix 11 is traditional annealing furnace roller.Resistive connection knurl compound coating 12 comprises three straton coatings, be respectively be coated on matrix surface alloy layer 121, be coated on first cermet coating 122 on alloy layer 121 surfaces and be coated on second cermet coating 123 on the first cermet coating 122 surfaces.In each embodiment, the component weight percent content of the alloy layer 121 of resistive connection knurl compound coating 12 is as shown in Table 1:
Table one
| Embodiment | Co | Cr | Al | Y | Ta |
| 1 | 60％ | 18％ | 12％ | 1.5％ | 8.5％ |
| 2 | 50％ | 28％ | 12％ | 1.5％ | 8.5％ |
| 3 | 65％ | 20％ | 7％ | 2％ | 6％ |
| 4 | 54％ | 26％ | 10％ | 0.5％ | 9.5％ |
| 5 | 54％ | 28％ | 6％ | 0.5％ | 11.5％ |
| 6 | 56％ | 25％ | 8.3％ | 0.2％ | 10.5％ |
| 7 | 55％ | 19％ | 12％ | 2％ | 12％ |
| 8 | 63％ | 18％ | 9％ | 0.7％ | 9.3％ |
| 9 | 59.5％ | 21.5％ | 7％ | 1.8％ | 10.2％ |
| 10 | 57％ | 24％ | 9％ | 1.6％ | 8.4％ |
In each embodiment, the component weight percent content of the first cermet coating 122 of resistive connection knurl compound coating 12 is as shown in Table 2:
Table two
| Embodiment | Y 2O 3 | Co | Cr | Al | Y | Ta |
| 1 | 15％ | 52％ | 18.4％ | 8.6％ | 0.5％ | 5.5％ |
| 2 | 10％ | 52％ | 20％ | 9.3％ | 0.7％ | 8％ |
| 3 | 11％ | 49.5％ | 18％ | 10％ | 1.5％ | 10％ |
| 4 | 14％ | 56％ | 16％ | 6％ | 1％ | 7％ |
| 5 | 12％ | 60％ | 14％ | 4％ | 0.2％ | 9.8％ |
| 6 | 13％ | 48％ | 26％ | 7％ | 2％ | 4％ |
| 7 | 12.3％ | 50％ | 24％ | 8％ | 1.2％ | 4.5％ |
| 8 | 14.5％ | 51.5％ | 22％ | 5.5％ | 0.5％ | 6％ |
| 9 | 11.8％ | 57％ | 15％ | 8％ | 1.2％ | 7％ |
| 10 | 10.6％ | 56.5％ | 18％ | 5.6％ | 0.8％ | 8.5％ |
In each embodiment, the component weight percent content of the second cermet coating 122 of resistive connection knurl compound coating 12 is as shown in Table 3:
Table three
| Embodiment | CrB 2 | Y 2O 3 | Co | Cr | Al | Y | Ta |
| 1 | 18％ | 15％ | 35％ | 18％ | 8％ | 1％ | 5％ |
| 2 | 19％ | 14％ | 37％ | 17％ | 6％ | 1.1％ | 5.9％ |
| 3 | 17％ | 12％ | 47％ | 14％ | 5％ | 0.2％ | 4.8％ |
| 4 | 15％ | 10％ | 50％ | 13％ | 4％ | 1.5％ | 6.5％ |
| 5 | 20％ | 11％ | 45％ | 10％ | 6.8％ | 1.2％ | 6％ |
| 6 | 16.4％ | 13％ | 47％ | 12.5％ | 5.3％ | 1.8％ | 4％ |
| 7 | 18.8％ | 11.3％ | 45.5％ | 11％ | 7.5％ | 0.5％ | 5.4％ |
| 8 | 17.3％ | 12.5％ | 40％ | 17％ | 5.9％ | 2％ | 5.3％ |
| 9 | 15.5％ | 13.8％ | 38.5％ | 16.4％ | 6.8％ | 1％ | 8％ |
| 10 | 19.6％ | 10.7％ | 45.5％ | 10％ | 8％ | 1.2％ | 5％ |
The spraying method of resistive connection knurl compound coating 12 is as follows:
A. adopt spraying equipment, powdered alloy is sprayed into matrix surface, form the alloy layer of 1～20 μ m; The weight percent content of the each component of alloy layer as shown in Table 1.
B. adopt spraying equipment, the first metal ceramic powder is sprayed into alloy layer surface, form the first cermet coating of 10～30 μ m; The weight percent content of the each component of the first cermet coating as shown in Table 2.
C. adopt spraying equipment, the second metal ceramic powder is sprayed into the first cermet coating surface, form the second cermet coating of 10～30 μ m; The weight percent content of the each component of the second cermet coating as shown in Table 3.Complete the spraying of the resistive connection knurl compound coating to matrix 11, make composite structure roller 1.
The technical parameter of the composite structure roller in each embodiment is as shown in Table 4:
Table four
Data acquisition in table four obtains with the following method:
1050 DEG C, 48 hours oxidation weight gains: heat treatment furnace is put in the test block that four sides is coated with to resistive connection knurl compound coating, be heated at 1050 DEG C and be incubated 48 hours, take out cooling and weigh, the weightening finish of Units of Account time unit area coating, for weighing the antioxidant property of coating.The unit time weightening finish of unit surface coating is fewer, and antioxidant property is stronger, otherwise more weak.
800 DEG C of high-temperature wearable loss rates: use high temperature friction and wear trier antagonism dross compound coating to carry out wear-resistant test, 800 DEG C of test temperatures, rotating speed 100rpm, test pressure 15N, test stroke 200m, the internally coated wear volume of Units of Account pressure unit stroke after weighing, for weighing the high temperature wear resistant performance of coating.The internally coated wear volume of unit pressure unit's stroke is fewer, and high temperature wear resistant performance is higher, otherwise poorer.
Room temperature to 1200 DEG C thermal shock resistance properties: will be coated with the test piece of resistive connection knurl compound coating and be heated to 1200 DEG C of insulation 20min, and observe disbonding situation after taking-up Water Quenching.Repeat-heating shrend, until disbonding area exceedes 2% of the coating total area.By making disbonding area exceed the heating shrend number of times of the coating total area 2%, weigh the thermal shock resistance properties of coating.Heating shrend number of times is more, and thermal shock resistance properties is better, otherwise poorer.
Bonding strength: at mating plate end face, face area is S by resistive connection knurl coating spraying.By the bonding formation tension specimen of binding agent.Adopt omnipotent mechanical test machine above-mentioned mating plate to be carried out to tension test, the ultimate load F while recording coating shedding.The mean value F ' that gets five tension test ultimate loads, anchoring strength of coating is F '/S.
Anti-nodulation ability: whether under 1000 DEG C of environment of high temperature, place ferromanganese powder at resistive connection knurl coatingsurface, be incubated after 480 hours, observing coatingsurface has buildup to produce.Weigh the anti-nodulation ability of coating according to the quantity of buildup, size.Anti-nodulation ability is divided into excellent, good, general, poor from high to low.Buildup quantity is zero for excellent.
As shown in Table 4, be coated with the composite structure roller of resistive connection knurl compound coating,, without the furnace roller of the coated furnace roller of coating and direct coating ceramic material, anti-nodulation ability improves greatly.Meanwhile, the furnace roller of more direct coating ceramic material, antioxidant property, high-temperature wearable loss rate, thermal shock resistance properties, also improves greatly with the bonding strength of matrix.
Composite structure roller prepared by embodiment 1-10 exceedes 4 years half the work-ing life in the continuous strip annealing furnace of cold rolling mill, the furnace roller of being longer than the coating of nonreactive dross compound coating is no more than the work-ing life of 3 years, and result of use is good, without dross, the steel plate qualification rate of production is high.
Embodiment in the present invention, only for the present invention will be described, does not form the restriction to claim scope, those skilled in that art can expect other be equal in fact substitute, all in protection domain of the present invention.
Claims (2)
1. the spraying method of resistive connection knurl compound coating, is characterized in that, comprises the following steps:
A. adopt spraying equipment, the powdered alloy being made up of 50%～65% Co, 18%～28% Cr, 6%～12% Al, 0.2%～2% Y, 6%～12% Ta according to weight percent content is sprayed into matrix surface, forms the alloy layer of 1～20 μ m;
B. adopt spraying equipment, the first metal ceramic powder being made up of 10%～15% Y2O3,48%～60% Co, 14%～26% Cr, 4%～10% Al, 0.2%～2% Y, 4%～10% Ta according to weight percent content is sprayed into alloy layer surface, forms the first cermet coating of 10～30 μ m;
C. adopt spraying equipment, the second metal ceramic powder being made up of 15%～20% CrB2,10%～15% Y2O3,35%～50% Co, 10%～18% Cr, 4%～8% Al, 0.2%～2% Y, 4%～8% Ta according to weight percent content is sprayed into the first cermet coating surface, forms the second cermet coating of 10～30 μ m.
2. the spraying method of resistive connection knurl compound coating according to claim 1, is characterized in that, described matrix is annealing furnace roller.
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Cited By (6)
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| CN110241372A (en) * | 2019-07-10 | 2019-09-17 | 上海君山表面技术工程股份有限公司 | The preparation method of antioxidant wear-resistant composite coating |
| CN110241371A (en) * | 2019-07-10 | 2019-09-17 | 上海君山表面技术工程股份有限公司 | Antioxidant wear-resistant furnace roller |
| CN110643926A (en) * | 2019-10-25 | 2020-01-03 | 安徽马钢表面技术股份有限公司 | High-temperature furnace roller ZrB of continuous annealing furnace2Modified CoCrAlTaY-Y2O3Protective coating and preparation method thereof |
| CN112323008A (en) * | 2020-11-20 | 2021-02-05 | 靖江市润新表面工程技术有限公司 | Coating for surface of furnace roller |
| CN113564587A (en) * | 2021-08-18 | 2021-10-29 | 沈阳大陆激光先进制造技术创新有限公司 | High-temperature oxidation-resistant and press-in nodule-resistant functional layer alloy material for laser composite manufacturing furnace roller and process method |
| CN115044762A (en) * | 2022-08-17 | 2022-09-13 | 靖江市润新表面工程技术有限公司 | Silicon steel furnace roller and processing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113564587A (en) * | 2021-08-18 | 2021-10-29 | 沈阳大陆激光先进制造技术创新有限公司 | High-temperature oxidation-resistant and press-in nodule-resistant functional layer alloy material for laser composite manufacturing furnace roller and process method |
| CN115044762A (en) * | 2022-08-17 | 2022-09-13 | 靖江市润新表面工程技术有限公司 | Silicon steel furnace roller and processing method thereof |
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