CN105332012B - A kind of copper plate of crystallizer plating thermal spraying complex gradient coating and preparation method thereof - Google Patents

A kind of copper plate of crystallizer plating thermal spraying complex gradient coating and preparation method thereof Download PDF

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CN105332012B
CN105332012B CN201510975581.5A CN201510975581A CN105332012B CN 105332012 B CN105332012 B CN 105332012B CN 201510975581 A CN201510975581 A CN 201510975581A CN 105332012 B CN105332012 B CN 105332012B
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nicr
layer
sample
copper plate
coating
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CN105332012A (en
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王硕煜
陈汪林
张世宏
倪振航
李国徽
柯鹏
胡小红
张龙
叶文虎
刘刚
周永
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Anhui Masteel Surface Technology Co., Ltd.
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Ma'anshan Ma Steel Surface Engineering Technology Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/057—Manufacturing or calibrating the moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/059—Mould materials or platings
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/34—Pretreatment of metallic surfaces to be electroplated

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

The invention discloses a kind of copper plate of crystallizer plating thermal spraying complex gradient coating and preparation method thereof, the tack coat and working lining being successively set on matrix, described matrix are CrZrCu alloys, and tack coat is Ni layers, and working lining is NiCr Cr3C2Layer；The NiCr Cr3C2The interior tissue of layer includes NiCr solid solution phases, Cr3C2Carbide, Cr7C3Carbide and a small amount of amorphous phase.Shot-peeningization is handled again after CrZrCu alloy samples surface is polished, fixed after cleaning；Sample after cleaning is positioned in electrolytic cell, the electroplated Ni layer on sample；After being polished with Ni layers of sample, then bead；After the sample after processing is fixed again, flame preheating, then carry out NiCr Cr3C2The HVOF sprayings of layer.The thermal coefficient of expansion and hardness of electroplated Ni tack coat play the role of transition mitigation between NiCr Cr3C2 working linings and matrix CrZrCu, therefore coating has the wear rate for compared with high-bond intensity, reducing coating；Reduce the wear rate of coating；Improve the service life of copper plate of crystallizer.

Description

A kind of copper plate of crystallizer plating-thermal spraying complex gradient coating and preparation method thereof
Technical field
The present invention relates to a kind of coating of high-performance crystallizer, more particularly to a kind of copper plate of crystallizer plating-thermal jet Apply complex gradient coating and preparation method thereof.
Background technology
Continuous casting has become production technology conventional in modern steel industrial production, shows that continuous casting billet yield reaches according to statistics More than the 90% of crude steel yield, at the same time the use of high efficiency continuous casting machine is to conticaster cooling position：Crystallizer, it is proposed that higher Performance requirement.Such as require high-bond, high-wearing feature, excellent thermal conductivity and good compactness etc..Therefore, Ke Yili One layer of coating for meeting performance requirement is enclosed in crystallizer copper plate surface with surface engineering technology, so can both extend crystallizer Service life can also reduce manufacturing cost.
At present, common technical method is the coating electroplated in crystalline copper plate surface to prepare required performance, such as hard Cr coating, Ni-Fe coating, Ni-Co coating, Ni-Cr composite deposites and Ni-Co-W coating.Although electrodeposited coating and copper plate base body It is higher with reference to power, but since its relatively low hardness causes that its wearability is poor, and service life is shorter.In addition, by NiCr- Although the coating that Cr3C2 powder is directly prepared on Copper substrate using supersonic flame spraying with very high hardness with it is wear-resisting Property, but since the difference of larger thermal coefficient of expansion can cause the combination power of coating and matrix very low, using process In easily there is situation about peeling off, influence production efficiency increase production cost.Meanwhile copper plate of crystallizer is extremely severe in operating condition Carve, the side of copper coin is contacted with 30~40 DEG C of cooling water, and opposite side is contacted with 1570 DEG C of molten steel, it is therefore desirable to which coating is being protected Also to ensure that coating has good thermal conductivity while demonstrate,proving high bond strength, ensure the timely transmission of heat.
HVOF coatings have high hardness, but differ bigger with the physical property of copper plate base body, therefore limit HVOF paintings Application of the layer on copper plate of crystallizer.So single HVOF coatings cannot meet that the performance of crystallizer is met the requirements, it is main If it is larger that NiCr-Cr3C2 coatings and CrZrCu obtain difference of thermal expansion coefficients, so as to reduce HVOF coatings and copper plate base body knot With joint efforts.It is inadequate only by adjusting spray parameters and coating composition to improve the combination power of HVOF coatings and copper plate base body.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of copper plate of crystallizer plating-thermal jet coating Gradient coating and preparation method thereof is closed, improves combination power, hardness, heat conduction and the wear-resisting property of product.
The present invention is achieved by the following technical solutions, and complex gradient coating of the present invention includes being set in turn in base Tack coat and working lining on body, described matrix are CrZrCu alloys, and tack coat is Ni layers, working lining NiCr-Cr3C2Layer；Institute State NiCr-Cr3C2The interior tissue of layer includes NiCr solid solution phases, Cr3C2Carbide, Cr7C3Carbide and a small amount of amorphous phase.
The tack coat is electroplated Ni layer.Electroplating technology is ripe, suitable industrial production.
The NiCr-Cr3C2In layer, by mass percentage, including following components：NiCr 40~60%, Cr3C240~ 60%.
One of preferred embodiment as the present invention, the thickness of the tack coat is 150~200 μm.
One of preferred embodiment as the present invention, the thickness of the working lining is 200~300 μm.
One of preferred embodiment as the present invention, complex gradient coating thermal conductivity at 500 DEG C reaches 90W/mK More than.
A kind of preparation method of copper plate of crystallizer plating-thermal spraying complex gradient coating, comprises the following steps：
(1) bead again after CrZrCu alloy samples surface is polished, it is fixed after cleaning；
(2) sample after cleaning is positioned in electrolytic cell, the electroplated Ni layer on sample；
(3) after being polished with Ni layers of sample, then bead；
(4) after the sample after processing is fixed again, flame preheating, then carry out NiCr-Cr3C2The HVOF sprayings of layer.
In the step (1) and step (3), specimen surface is polished to roughness≤0.8 μm, then using alumina balls into Row shot-peening, specimen surface roughness are 2~6 μm.
In the step (2), 40~80 DEG C, 10~20V of voltage, 3~7A/dm of current density of electroplating pool temperature2, during plating Between 1~3h.
In the step (4), NiCr-Cr3C2In the spraying process of layer, kerosene oil flow is controlled in 23~27L/h, oxygen stream Amount control controls matrix and tack coat table in 820~860NLPM, carrier gas flux control in 6.0~8.5NLPM, spraying process Face mean temperature is 200~250 DEG C.
The present invention is accounted for from matrix-coat system, introduces the concept of complex gradient coating, i.e., in matrix and HVOF Add one layer of tack coat between coating, so as to improve matrix in the combination power of coating and not influence the mechanicalness of HVOF working linings Energy.Since Ni and copper plate base body have similar physical property, choose transition zone that Ni is tack coat most real value it One.And the thermal coefficient of expansion of electroplated Ni tack coat is between matrix CrZrCu and NiCr-Cr3C2 working lining thermal coefficient of expansion, energy Enough realize the transitional function of copper plate base body and the interlayer that works；The design of complex gradient coating can not only improve the combination power of coating And compactness, and the wear rate of coating can be reduced.Due to the big characteristic of supersonic flame spraying flying speed of partcles, work Layer compactness is good.
The present invention has the following advantages compared with prior art：The present invention is glued due to being sprayed at the electroplated Ni on copper plate base body surface Tie the thermal coefficient of expansion of layer and hardness play the role of transition mitigation between NiCr-Cr3C2 working linings and matrix CrZrCu, Each bed boundary physical property is mutually matched, therefore coating has compared with high-bond intensity；
Porosity in the present invention due to complex gradient coating is relatively low, compact structure, therefore has Thermal conductivity.This Due to each layer hardness transition mitigation of complex gradient coating so that coating has good wear Characteristics, greatly in invention The big wear rate for reducing coating；
Composite coating, which prepares completion, in the present invention need not carry out any post annealed processing, and bond strength reaches 75MPa, Wear rate under 20N load is 1/10th of traditional electroplated Ni CoW, and largely improve copper plate of crystallizer uses the longevity Life, at 500 DEG C, the thermal conductivity of complex gradient coating reaches more than 90W/mK, therefore it is broader to be beneficial to copper plate of crystallizer Marketing development.
Brief description of the drawings
Fig. 1 is the SEM shape appearance figures that coating is made in embodiment 3；
Fig. 2 is that NiCr-Cr is made in embodiment 33C2The XRD diagram of layer；
Fig. 3 is the microhardness figure that coating coating under 500g load is made in embodiment 1~3；
Fig. 4 is the extension test figure that anchoring strength of coating is made in embodiment 1~3；
Fig. 5 is that coating friction and wear behavior figure is made in embodiment 1~3；
Fig. 6 is that thermal conductivity test chart of the coating at 500 DEG C is made in embodiment 1~3.
Embodiment
Elaborate below to the embodiment of the present invention, the present embodiment is carried out lower premised on technical solution of the present invention Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation Example.
Embodiment 1
The CrZrCu copper alloy samples that market is bought are mechanically polished to surface roughness≤0.6 μm, using oxidation Aluminium ball carries out shot-peening roughening treatment to 2~6 μm of surface roughness, then carries out acetone, absolute ethyl alcohol ultrasonic cleaning, Ran Houfang Enter in alcohol and acetone, then with ultrasonic cleaning 30 minutes.Sample is placed in electroplating pool, electroplating solution component Ni 150~ 500g/L, Co 3~13g/L of 20~150g/L, W, 40~80 DEG C, 10~20V of voltage, 3~7A/ of current density of electroplating pool temperature dm2, 1~3h of electroplating time, gained electroplated Ni CoW layer thickness is 100~300 μm.
Embodiment 2
The CrZrCu copper alloys sample (block, rod) that market is bought is mechanically polished to surface roughness≤0.6 μm, is adopted Shot-peening roughening treatment is carried out to 2~6 μm of surface roughness with alumina balls, then carries out acetone, absolute ethyl alcohol ultrasonic cleaning, It is then placed in alcohol and acetone, first with ultrasonic cleaning 30 minutes, then with high pressure air rifle the sample after cleaning is dried up and consolidated Due on supersonic spray coating equipment pivoted frame.Mechanical arm parameter is set, copper alloy matrix is preheated using flame, matrix table Face temperature is 180~250 DEG C, and kerosene oil flow is controlled in 23~27L/h, and oxygen flux control is in 820~860NLPM, carrier gas stream Amount control is in 6.0~8.5NLPM.Open powder valve and reset mechanical arm parameter, carry out NiCr-Cr3C2The spray of working lining Apply.Spray time is 10~30min, and the single HVOF coatings that thickness is 250 μm are made on copper alloy matrix, then carry out machine Tool is polished to roughness≤0.1 μm, and then progress acetone, absolute ethyl alcohol are cleaned by ultrasonic spare.
Embodiment 3
The CrZrCu copper alloys sample (block, rod) that market is bought is mechanically polished to surface roughness≤0.6 μm, is adopted Shot-peening roughening treatment is carried out to 2~6 μm of surface roughness with alumina balls, then carries out acetone, absolute ethyl alcohol ultrasonic cleaning, It is then placed in alcohol and acetone, then with ultrasonic cleaning 30 minutes.Sample is placed in electroplating pool, electroplating solution is amino sulphur Sour nickel, nickel chloride, the mixed solution of dodecyl sodium, electroplating pool temperature 60 C, voltage 15V, current density 5A/dm2, during plating Between 2h, gained electroplated Ni layer thickness be 180 μm.Above-mentioned preparation is had to the copper sample (block, rod) of electroplated Ni layer, is mechanically polished To surface roughness≤0.6 μm, shot-peening roughening treatment is carried out to 2~6 μm of surface roughness using alumina balls, then carries out third Ketone, absolute ethyl alcohol ultrasonic cleaning, are then placed in alcohol and acetone, then with ultrasonic cleaning 30 minutes.There is Ni to glue preparation The sample of knot layer is fixed on supersonic spray coating equipment pivoted frame, sets mechanical arm parameter, is preheated using flame row, preheating temperature 150~200 DEG C, matrix surface and tack coat mean temperature are 220 DEG C, and kerosene oil flow control exists in 25L/h, oxygen flux control 840NLPM, carrier gas flux are controlled in 7.0NLPM.Open powder valve and reset mechanical arm parameter, carry out NiCr-Cr3C2's Spraying.Spray time is 40min, and the NiCr-Cr that thickness is 250 μm is made3C2.Sample is removed, is mechanically polished to roughness ≤ 0.1 μm, then progress acetone, absolute ethyl alcohol are cleaned by ultrasonic spare.
Embodiment 4
The CrZrCu copper alloys sample (block, rod) that market is bought is mechanically polished to surface roughness≤0.6 μm, is adopted Shot-peening roughening treatment is carried out to 2~6 μm of surface roughness with alumina balls, then carries out acetone, absolute ethyl alcohol ultrasonic cleaning, It is then placed in alcohol and acetone, then with ultrasonic cleaning 30 minutes.Sample is placed in electroplating pool, electroplating solution is amino sulphur Sour nickel, nickel chloride, the mixed solution of dodecyl sodium, 40 DEG C, voltage 10V, current density 3A/dm of electroplating pool temperature2, during plating Between 1h, gained electroplated Ni layer thickness be 100 μm.Above-mentioned preparation is had to the copper sample (block, rod) of electroplated Ni layer, is mechanically polished To surface roughness≤0.6 μm, shot-peening roughening treatment is carried out to 2~6 μm of surface roughness using alumina balls, then carries out third Ketone, absolute ethyl alcohol ultrasonic cleaning, are then placed in alcohol and acetone, then with ultrasonic cleaning 30 minutes.There is Ni to glue preparation The sample of knot layer is fixed on supersonic spray coating equipment pivoted frame, sets mechanical arm parameter, is preheated using flame row, matrix surface and Tack coat mean temperature is 200 DEG C, and kerosene oil flow control is controlled in 23L/h, oxygen flux control in 820NLPM, carrier gas flux In 6.0NLPM.Open powder valve and reset mechanical arm parameter, carry out NiCr-Cr3C2The spraying of working lining.Spray time is 30min, is made the NiCr-Cr that thickness is 200 μm3C2Working lining.Sample is removed, is mechanically polished to roughness≤0.1 μm, Then progress acetone, absolute ethyl alcohol are cleaned by ultrasonic spare.
Embodiment 5
The CrZrCu copper alloys sample (block, rod) that market is bought is mechanically polished to surface roughness≤0.6 μm, is adopted Shot-peening roughening treatment is carried out to 2~6 μm of surface roughness with alumina balls, then carries out acetone, absolute ethyl alcohol ultrasonic cleaning, It is then placed in alcohol and acetone, then with ultrasonic cleaning 30 minutes.Sample is placed in electroplating pool, electroplating solution is amino sulphur Sour nickel, nickel chloride, the mixed solution of dodecyl sodium, conventional electroplating solution, 80 DEG C, voltage 20V of electroplating pool temperature, current density 7A/dm2, electroplating time 3h, gained electroplated Ni layer thickness is 200 μm.By above-mentioned preparation have electroplated Ni layer copper sample (block, Rod), mechanically polished to surface roughness≤0.6 μm, shot-peening roughening treatment is carried out to surface roughness 2 using alumina balls ~6 μm, acetone, absolute ethyl alcohol ultrasonic cleaning are then carried out, is then placed in alcohol and acetone, then divided with ultrasonic cleaning 30 Clock.The sample that preparation there are Ni tack coats is fixed on supersonic spray coating equipment pivoted frame, mechanical arm parameter is set, utilizes flame row Preheating, matrix surface and tack coat mean temperature are 250 DEG C, and kerosene oil flow control exists in 27L/h, oxygen flux control 860NLPM, carrier gas flux are controlled in 8.5NLPM.Open powder valve and reset mechanical arm parameter, carry out NiCr-Cr3C2Work Make the spraying of layer.Spray time is 50min, and the NiCr-Cr that thickness is 300 μm is made3C2Working lining.Sample is removed, carries out machinery Roughness≤0.1 μm is polished to, then progress acetone, absolute ethyl alcohol are cleaned by ultrasonic spare.
As shown in Figure 1, Fig. 1 is the SEM schematic diagrames that coating is made in embodiment 3, it is followed successively by NiCr- in figure from top to bottom Cr3C2Working lining, Ni tack coats and CrZrCu basic units, are tightly combined.
NiCr-Cr3C2In layer, by mass percentage, including following components：NiCr 50%, Cr3C250%.Such as Fig. 2 institutes Show, NiCr-Cr3C2The interior tissue of layer includes NiCr solid solution phases, Cr3C2Carbide, Cr7C3Carbide and a small amount of amorphous phase.
NiCr belongs to metal solid solution phase, has good thermal conductivity, elastoplasticity and high-temperature oxidation resistance, and carbide is gold Belong to ceramic phase there is very high hardness, play the role of in the coating support strengthen so that coating have preferable wearability with Bond strength.
Coating made from embodiment 1~3 is subjected to microhardness detection, extension test, friction and wear behavior test, as a result It is as follows：
Wherein, NiCoW is sample prepared by embodiment 1, and working lining prepares sample for embodiment 2, and tack coat-working lining is Embodiment 3 prepares sample.
As shown in figure 3, NiCoW hardness prepared by embodiment 1 is relatively low, the coating prepared by embodiment 2 and embodiment 3 contains A certain amount of carbide Cr3C2, therefore the working lining sample coatings case hardness prepared in embodiment 2 is glued with prepared by embodiment 3 Knot layer-working lining sample coatings case hardness maintains an equal level.
As shown in figure 4, the work that NiCoW samples tensile strength prepared by embodiment 1 is prepared in 32MPa or so, embodiment 2 The tensile strength of layer sample is minimum, and about 15MPa, the tensile strength of transition zone-working lining sample prepared by embodiment 3 substantially carries Rise, about 75MPa.This is because NiCr-Cr3C2Powder differs larger with copper-based isolator CTE, can not be with spraying process Copper alloy matrix combines very well, and Ni and Copper substrate and NiCr-Cr3C2The thermal coefficient of expansion of powder all relatively, therefore can In matrix and NiCr-Cr3C2Play the role of a transition between working lining to relax, greatly improve complex gradient coating Bond strength.
As can be seen from Figure 5 the NiCoW sample wear rates that prepared by embodiment 1 are about 3.5 × 10-13m3/ Nm, embodiment 2 The working lining sample wear rate of preparation is 2.0 × 10-13m3/ Nm, plating-working lining sample wear rate prepared by embodiment 3 are about 0.7×10-13m3/ Nm, reason is that electroplated Ni tack coat has preferable elastoplasticity, therefore the addition of Ni tack coats to grind Loss rate reduces.
As shown in fig. 6, the NiCoW electrodeposited coatings of the preparation of embodiment 1 thermal conductivity 107W/mK, embodiment 2 at 500 DEG C are made Standby working lining coating thermal conductivity 88W/mK at 500 DEG C, plating-working lining coating prepared by embodiment 3 heat at 500 DEG C Conductance 94W/mK.If adding respective matrix, thermal conductivity rate score can increased again.Belong to metal mainly due to NiCr Solid solution phase, has good thermal conductivity.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.

Claims (6)

  1. A kind of 1. copper plate of crystallizer plating-thermal spraying complex gradient coating, it is characterised in that the complex gradient coating include according to The secondary tack coat and working lining being arranged on matrix, described matrix are CrZrCu alloys, and tack coat is Ni layers, and working lining is NiCr-Cr3C2Layer；The NiCr-Cr3C2The interior tissue of layer includes NiCr solid solution phases, Cr3C2Carbide, Cr7C3Carbide and A small amount of amorphous phase；The tack coat is electroplated Ni layer；The NiCr-Cr3C2In layer, by mass percentage, including following components： NiCr 40~60%, Cr3C240~60%；
    The preparation method of the complex gradient coating is as follows：
    (1) shot-peeningization is handled again after CrZrCu alloy samples surface is polished, fixed after cleaning；
    (2) sample after cleaning is positioned in electrolytic cell, the electroplated Ni layer on sample；
    (3) after being polished with Ni layers of sample, then bead；
    (4) after the sample after processing is fixed again, flame preheating, then carry out NiCr-Cr3C2The HVOF sprayings of layer；
    In the step (4), NiCr-Cr3C2In the spraying process of layer, kerosene oil flow is controlled in 23~27L/h, oxygen flow control System controls matrix and tie layer surface to put down in 820~860NLPM, carrier gas flux control in 6.0~8.5NLPM, spraying process Equal temperature is 200~250 DEG C.
  2. A kind of 2. copper plate of crystallizer plating-thermal spraying complex gradient coating according to claim 1, it is characterised in that institute The thickness for stating tack coat is 150~200 μm.
  3. A kind of 3. copper plate of crystallizer plating-thermal spraying complex gradient coating according to claim 1, it is characterised in that institute The thickness for stating working lining is 200~300 μm.
  4. A kind of 4. copper plate of crystallizer plating-thermal spraying complex gradient coating according to claim 1, it is characterised in that institute State complex gradient coating thermal conductivity at 500 DEG C and reach more than 90W/mK.
  5. A kind of 5. copper plate of crystallizer plating-thermal spraying complex gradient coating according to claim 1, it is characterised in that institute State in step (1) and step (3), specimen surface is polished to roughness≤0.8 μm, then carries out shot-peening, examination using alumina balls Sample surface roughness is 2~6 μm.
  6. A kind of 6. copper plate of crystallizer plating-thermal spraying complex gradient coating according to claim 1, it is characterised in that institute State in step (2), 40~80 DEG C, 10~20V of voltage, 3~7A/dm of current density of electroplating pool temperature2, 1~3h of electroplating time.
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CN109402682A (en) * 2018-12-12 2019-03-01 常州大学 A kind of method for the raising coating binding force that initialization layer and sandblasting combine
CN109402683A (en) * 2018-12-12 2019-03-01 常州大学 A kind of initialization layer and the ultrasonic raising coating binding force method combined
CN110670036B (en) * 2019-10-12 2021-09-14 天津大学 Amorphous zirconium dioxide/amorphous copper alloy layered structure and preparation method thereof
CN111074274A (en) * 2019-12-23 2020-04-28 安徽工业大学 Long-life gradient composite coating on surface of crystallizer copper plate and preparation method thereof
CN111378858A (en) * 2020-04-20 2020-07-07 西安石油大学 Mo-modified chromium carbide-nickel-chromium composite material and preparation method thereof

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CN103447485A (en) * 2013-07-16 2013-12-18 辽宁科技大学 Surface plating and laser cladding enhancement method for continuous casting crystallizer
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