CN104046979B - The spraying method of resistive connection tumor composite coating - Google Patents
The spraying method of resistive connection tumor composite coating Download PDFInfo
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Abstract
The invention discloses the spraying method of a kind of resistive connection tumor composite coating, it is characterised in that comprise the following steps: a, employing spraying equipment, alloy powder is sprayed into matrix surface, forms alloy-layer；B, employing spraying equipment, be sprayed into alloyed layer by the first metal ceramic powder, form the first cermet coating；C, employing spraying equipment, be sprayed into the second metal ceramic powder the first cermet coating surface, form the second cermet coating.The spraying method of resistive connection tumor composite coating provided by the invention, technique is simple, can complete spraying on tradition furnace roller surface, it is not necessary to change furnace roller, reduce the processing and manufacturing cost of steel mill.Sprayed on material is Powdered, makes coating have good thickness evenness.Form the resistive connection tumor composite coating with performances such as wear-resistant, high temperature resistance, antioxidation, anti-thermal shock, resistive connection tumors at matrix surface, be greatly improved the quality of the steel plate adopting the furnace roller being coated with this coating to manufacture.
Description
Technical field
The present invention relates to the spraying method of a kind of resistive connection tumor composite coating.
Background technology
In recent years, along with the fast development of China's economic, we are faced with by highly energy-consuming, high cost, low value-added product, towards low power consuming, low cost, transition of high value added product and upgrading.Wherein with 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, the demand of high-end Automobile Plate is also increasing so that high-end cold-rolled steel sheet becomes the main raw material(s) manufacturing Automobile Plate.The production equipment of steel plate is had higher requirement by this.
Furnace roller as the core component of steel plate continuous annealing furnace, be in high temperature, at a high speed, in the harsh working environment of reducing atmosphere, can the work that run well will directly determine performance and the quality of steel plate.Furnace roller is high speed rotating at work, drives steel plate quickly to move in stove, and this requires that furnace roller has good coefficient of friction, suitable roughness, provides sufficient frictional force for steel band.Simultaneously as steel band contacts with the continuous of roll body, also require that roll body has good abrasion resistance properties.In the steel band course of processing, will keeping at a relatively high temperature (maximum temperature is up to more than 1000 DEG C), this requires that furnace roller possesses excellent high temperature resistance, antioxidative performance.Furnace roller owing to exposing for a long time in stove, although having gas shield, but the probability of oxidation occur or relatively larger, after furnace roller surface is oxidized, surface roughness also can change therewith, very unfavorable to producing high-quality steel plate.Owing to work to be filled with appropriate reducibility gas, this ferrum oxide that can make steel strip surface or manganese oxide etc. are reduced into the metal such as ferrum, manganese, and ferrum, manganese and furnace roller material (mostly being heat-resistance stainless steel) have very strong affinity, intersolubility, easily it is attached on roll surface and forms buildup, it is difficult to manual removal, by instrument such as file, must take time and effort.And along with furnace roller operating temperature raises, dross and abrasion also strengthen therewith, and the slip between furnace roller and steel plate also can promote that dross generates.Pit can be left when dross can make steel plate sliding cross roll surface on steel plate, pull, the defect such as cut, thus affecting plate quality.
Summary of the invention
The invention aims to overcome deficiency of the prior art, it is provided that a kind of resistive connection tumor composite coating.
For realizing object above, the present invention is achieved through the following technical solutions:
Resistive connection tumor composite coating, it is characterised in that include at least three layer coating, the alloy-layer being respectively coated on matrix surface, the first cermet coating being coated on alloyed layer and be coated on second cermet coating on the first cermet coating surface；Described alloy-layer according to weight percent content by 50%～65% Co, 18%～28% Cr, 6%～12% Al, the Y of 0.2%～2%, the Ta of 6%～12% form；Described first cermet coating according to weight percent content by 10%～15% Y2O3,48%～60% Co, 14%～26% Cr, 4%～10% Al, the Y of 0.2%～2%, the Ta of 4%～10% form；Described second cermet coating according to weight percent content by 15%～20% CrB2,10%～15% Y2O3,35%～50% Co, 10%～18% Cr, 4%～8% Al, the Y of 0.2%～2%, the Ta of 4%～8% form.
Preferably, described matrix is annealing furnace roller.
It is a further object to provide the spraying method of a kind of resistive connection tumor composite coating.
For achieving the above object, the present invention is achieved through the following technical solutions:
The spraying method of resistive connection tumor composite coating, it is characterised in that comprise the following steps:
A. spraying equipment is adopted, by according to weight percent content by 50%～65% Co, 18%～28% Cr, 6%～12% Al, the alloy powder that forms of the Y of 0.2%～2%, the Ta of 6%～12% be sprayed into matrix surface, form the alloy-layer of 1～20 μm；
B. spraying equipment is adopted, by according to weight percent content by 10%～15% Y2O3,48%～60% Co, 14%～26% Cr, 4%～10% Al, the first metal ceramic powder of forming of the Y of 0.2%～2%, the Ta of 4%～10% be sprayed into alloyed layer, form first cermet coating of 10～30 μm；
C. spraying equipment is adopted, by according to weight percent content by 15%～20% CrB2,10%～15% Y2O3,35%～50% Co, 10%～18% Cr, 4%～8% Al, the second metal ceramic powder of forming of the Y of 0.2%～2%, the Ta of 4%～8% be sprayed into the first cermet coating surface, form second cermet coating of 10～30 μm.
Preferably, described matrix is annealing furnace roller.
It is a further object to provide the composite structure roller of a kind of resistive connection tumor.
For achieving the above object, the present invention is achieved through the following technical solutions:
Composite structure roller, it is characterised in that include matrix and be coated on the resistive connection tumor composite coating of matrix surface；Resistive connection tumor composite coating includes at least three straton coatings, the alloy-layer being respectively coated on matrix surface, the first cermet coating being coated on alloyed layer and be coated on second cermet coating on the first cermet coating surface；Described alloy-layer according to weight percent content by 50%～65% Co, 18%～28% Cr, 6%～12% Al, the Y of 0.2%～2%, the Ta of 6%～12% form；Described first cermet coating according to weight percent content by 10%～15% Y2O3,48%～60% Co, 14%～26% Cr, 4%～10% Al, the Y of 0.2%～2%, the Ta of 4%～10% form；Described second cermet coating according to weight percent content by 15%～20% CrB2,10%～15% Y2O3,35%～50% Co, 10%～18% Cr, 4%～8% Al, the Y of 0.2%～2%, the Ta of 4%～8% form.
Preferably, described matrix is annealing furnace roller.
Resistive connection tumor composite coating provided by the invention, has the performances such as wear-resistant, high temperature resistance, antioxidation, anti-thermal shock, resistive connection tumor, is greatly improved the quality of the steel plate adopting the furnace roller being coated with this coating to manufacture.On the other hand, the service life of furnace roller also extends to some extent, and the prolongation time is not less than the 1/3 of original life-span, thus reducing the use cost of furnace roller.
Resistive connection tumor composite coating provided by the invention includes three layer coating, the alloy-layer being respectively coated on matrix surface, the first cermet coating being coated on alloyed layer and be coated on second cermet coating on cermet coating surface.Relatively adopt ceramic material to be directly coated with matrix surface, substantially increase the adhesion of coating and furnace roller, be prevented effectively from coating shedding, extend the service life of furnace roller.
Using alloy-layer as cladding matrix surface prime coat; owing to alloy-layer and matrix material match in the performance such as conduction of heat, thermal expansion; make that there is between coating and matrix good bond strength; after guaranteeing matrix (such as furnace roller) use for a long time, coating is also without coming off; extend the service life of furnace roller, reduce the frequency of maintenance of furnace roller.
Using the second cermet coating as surface layer, in alloy, add ceramic material, namely remain the excellent properties such as Alloy Anti high temperature, antioxidation, anti-thermal shock, wear-resistant, suitable roughness, there is the anti-noclulation that ceramic material plays simultaneously.Especially, B, Y element addition, make coating surface form complete fine and close oxide-film, improve the high temperature resistance of coating, antioxidation, abrasion resistance properties further, extend the service life of furnace roller, reduce the frequency of maintenance of furnace roller.The more important thing is, the addition of ceramic material, reduce the coating affinity to metal, delay or stop the generation of dross phenomenon, coating is made to have the excellent properties of resistive connection tumor, avoid because of furnace roller surface cord cause on steel plate, leaving pit when roll surface is crossed in steel plate sliding, pull, cut, be greatly improved the quality of the steel plate that the furnace roller being coated with this coating manufactures.
One excessive layer, the first cermet coating are set between the second cermet coating and alloy-layer.In first cermet coating, ceramic material content is lower than ceramic material content in the second cermet coating.This excessive layer has alloy-layer and the performance of the second metal level concurrently, it is ensured that the adhesive strength of the second cermet coating and alloy-layer, it is prevented that the second cermet coating comes off, and extends the service life of furnace roller, reduces the frequency of maintenance of furnace roller, saves human cost.
The spraying method of resistive connection tumor composite coating provided by the invention, technique is simple.Spraying can be completed, it is not necessary to change furnace roller, reduce the processing and manufacturing cost of steel mill on tradition furnace roller surface.Sprayed on material is Powdered, makes coating have good thickness evenness.
Accompanying drawing explanation
Fig. 1 is the composite structure roller front view in the present invention；
Fig. 2 is the A-A sectional view of Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail:
As illustrated in fig. 1 and 2, for composite structure roller 1.Composite structure roller 1 includes matrix 11 and the resistive connection tumor composite coating 12 of cladding matrix surface.Matrix 11 is traditional annealing furnace roller.Resistive connection tumor composite coating 12 includes three straton coatings, the alloy-layer 121 being respectively coated on matrix surface, the first cermet coating 122 being coated on alloy-layer 121 surface and be coated on second cermet coating 123 on the first cermet coating 122 surface.In each embodiment, the component weight percent content of the alloy-layer 121 of resistive connection tumor composite 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 tumor composite coating 12 is as shown in Table 2:
Table two
| Embodiment | Y2O3 | Co | Cr | Al | Y | Ta |
| 1 | 15% | 52% | 18.4% | 8.6% | 0.5% | 5.5% 3--> |
| 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 tumor composite coating 12 is as shown in Table 3:
Table three
| Embodiment | CrB2 | Y2O3 | 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 tumor composite coating 12 is as follows:
A. adopt spraying equipment, alloy powder is sprayed into matrix surface, form the alloy-layer of 1～20 μm；The weight percent content of each component of alloy-layer is as shown in Table 1.
B. adopt spraying equipment, the first metal ceramic powder is sprayed into alloyed layer, form first cermet coating of 10～30 μm；The weight percent content of the first each component of cermet coating is as shown in Table 2.
C. adopt spraying equipment, the second metal ceramic powder is sprayed into the first cermet coating surface, form second cermet coating of 10～30 μm；The weight percent content of the second each component of cermet coating is as shown in Table 3.Complete the spraying of the resistive connection tumor composite coating to matrix 11, prepare 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: the test block that four sides is coated with resistive connection tumor composite coating is put in heat-treatment furnace, it is heated at 1050 DEG C and is incubated 48 hours, taking out cooling and weigh, the weightening finish of unit of account unit of time area coating, for weighing the antioxygenic property of coating.The weightening finish of unit interval unit are coating is more few, and antioxygenic property is more strong, otherwise more weak.
800 DEG C of high-temperature wearable loss rates: use high temperature friction and wear testing machine antagonism dross composite coating to carry out Abrasion resistance test, test temperature 800 DEG C, rotating speed 100rpm, test pressure 15N, test stroke 200m, the internally coated wear volume of unit 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 per stroke is more few, and high temperature wear resistant performance is more high, otherwise more poor.
Room temperature is to 1200 DEG C of thermal shock resistance properties: is coated with resistive connection tumor composite coating test piece and is heated to 1200 DEG C of insulation 20min, observes disbonding situation after taking out Water Quenching.Repeat-heating shrend, until disbonding area exceedes the 2% of the coating gross area.By making disbonding area exceed the heating shrend number of times of the coating gross area 2%, weigh the thermal shock resistance properties of coating.Heating shrend number of times is more many, and thermal shock resistance properties is more good, otherwise more poor.
Bond strength: by resistive connection tumor coating spraying at mating plate end face, face area is S.By the bonding formation tensile sample of binding agent.Adopt omnipotent mechanics machine that above-mentioned mating plate carries out tension test, maximum load F during record coating shedding.Taking the meansigma methods F ' of five tension test maximum loads, anchoring strength of coating is F '/S.
Anti-nodulation ability: under 1000 DEG C of environment of high temperature, places ferromanganese powder at resistive connection tumor coating surface, after being incubated 480 hours, observes whether coating surface has buildup to produce.Anti-nodulation ability according to the quantity of buildup, size measurement coating.Anti-nodulation ability is divided into excellent, good, general, poor from high to low.Buildup quantity is zero is excellent.
As shown in Table 4, being coated with the composite structure roller of resistive connection tumor composite coating, relatively without the furnace roller of the furnace roller of coating cladding and direct coating ceramic material, anti-nodulation ability is greatly improved.Meanwhile, the furnace roller of more direct coating ceramic material, the bond strength of antioxygenic property, high-temperature wearable loss rate, thermal shock resistance properties and matrix is also greatly improved.
Composite structure roller prepared by embodiment 1-10 service life in the continuous strip annealing furnace of cold rolling mill was more than 4 years half, it is longer than furnace roller service life less than 3 years of nonreactive dross composite coating coating, 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, is not intended that the restriction to right, those skilled in that art it is contemplated that other replacements being substantially equal to, all in scope.
Claims (1)
1. the spraying method of resistive connection tumor composite coating, it is characterised in that comprise the following steps:
A. spraying equipment is adopted, by according to weight percent content by 50%～65% Co, 18%～28% Cr, 6%～12% Al, the alloy powder that forms of the Y of 0.2%～2%, the Ta of 6%～12% be sprayed into matrix surface, form the alloy-layer of 1～20 μm；
B. adopt spraying equipment, by according to weight percent content by 10%～15% Y2O3, 48%～60% Co, 14%～26% Cr, 4%～10% Al, 0.2%～2% Y, 4%～10% Ta composition the first metal ceramic powder be sprayed into alloyed layer, form first cermet coating of 10～30 μm；
C. adopt spraying equipment, by according to weight percent content by 15%～20% CrB2, 10%～15% Y2O3, 35%～50% Co, 10%～18% Cr, 4%～8% Al, 0.2%～2% Y, 4%～8% Ta composition the second metal ceramic powder be sprayed into the first cermet coating surface, form second cermet coating of 10～30 μm；
Described matrix is annealing furnace roller.
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| 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 |
| 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 |
| 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 |
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