CN101724874A - Surface repairing method for thin-strip continuous casting crystallizing roller or casting blank continuous casting crystallizer - Google Patents
Surface repairing method for thin-strip continuous casting crystallizing roller or casting blank continuous casting crystallizer Download PDFInfo
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Abstract
The invention discloses a surface repairing method for a thin-strip continuous casting crystallizing roller or a casting blank continuous casting crystallizer, comprising the following steps of: firstly, pre-processing the surface of the crystallizing roller or the crystallizer properly, then plating monolayer nickel base alloy on the surface of the crystallizing roller or the crystallizer, ending plating when the clad layer meets the requirement on size of the product and machining the crystallizing roller or the crystallizer. The nickel base alloy can be replaced by a nickel base composite clad layer which is formed by diffusing more than one micron-scale or nano-scale solid particles or fiber evenly in a substrate metal by taking pure nickel or the nickel base alloy as the substrate metal; the clad layer is even or of gradient; the clad layer further can be a multi-layer clad layer covered with the nickel base alloy or the nickel base composite clad layer again thereon by using pure nickel as a bottom clad layer. The method has the advantages that the clad layer of the crystallizing roller or the crystallizer is even and compact, has low inner stress, and high bonding strength with the matrix, thereby prolonging service life, reducing the manufacturing cost of continuous casting of the thin strip and casting blank and improving production efficiency and quality of product.
Description
Technical field
The present invention relates to the surface repairing method of steel-making continuous casting equipment, relate in particular to thin band continuous casting crystallization roller or strand continuous cast mold surface repairing method.
Background technology
The strip continuous casting technology process program is divided into belt, roll-type, roller belt-type etc. because of the mode difference of becoming a useful person, and wherein the twin-roll thin strip continuous casting technology has development prospect most.Its technological principle is that molten metal is injected between a pair of reverse rotation and the inner water flowing refrigerative crystallization roller, makes molten metal solidify the formation strip between two rollers.And being molten metal, the strand continuous casting in tetragon crystallizer of forming by copper coin or copper pipe crystallizer, solidifies the continuous casting technology that forms strand.In the continuous casting process, the crystal roller surface temperature of contact molten steel is about 600 ℃, and when the crystallization rolling was made metal sheet band, the crystal roller surface that contacted molten steel originally partly also rotated and leaves liquid metal, be exposed in the air, its surface temperature rapid drawdown is to about 200 ℃.Crystallizer is in the environment that colds and heat succeed each other too continuously.This shows; the residing environment of crystallization roller or crystallizer surface is very abominable in the casting process, and crystallization roller or crystallizer surface will bear the wearing and tearing to its generation of chemical corrosion that cold and hot fatigue and stress deformation, high temperature oxidation, molten steel and covering slag cause and rolling throwing.Thereby continuous casting crystallization roller or crystallizer surface should have good cold-and-heat resistent fatigue property, good heat-conducting, higher physical strength and wear resistance and corrosion resistance nature preferably.
Because crystallization roller or the residing work condition environment of crystallizer are more abominable, so the bulk copper material of crystallization roller or crystallizer can not directly contact with molten steel as working face and carry out continuous casting production, and need be in the high performance coating of its surperficial making one deck.This coating can be regulated the Heat transfer coefficient of crystallization roller or crystallizer on the one hand; so that lip-deep heat exchanging process uniform high-efficiency more; can also protect crystallization roller or crystallizer body on the other hand; thermal stresses that produces when alleviating casting and mechanical stress are avoided the wearing and tearing of rolling throwing to crystallization roller or crystallizer to the damage of crystallization roller or crystallizer.Improved crystallization roller of surface property or crystallizer, its prolongs in work-ing life, thereby reduced strip, strand continuous casting production cost, improved strip, the production efficiency and the quality product of strand continuous casting.
Continuous casting crystallization roller or crystallizer are after using for some time under the abominable working condition, its surface can produce defectives such as wearing and tearing, crackle, hole fall into, peel off, and can not satisfy service requirements, need repair its surface.Crystallization roller or the crystallizer repaired through the surface can use on the machine again again, and therefore, crystallization roller or crystallizer body are reused.
The restorative procedure of crystallization roller or crystallizer surface, say on the principle, process for treating surface such as thermospray, built-up welding, plating can adopt, but, with regard to current process for treating surface and in conjunction with regard to the operating mode of crystallization roller or crystallizer continuous casting, the effect that adopts electroplating technology that crystallization roller or crystallizer surface are repaired is better.Electric plating method can make the surface of crystallization roller or crystallizer be manufactured in the low temperature plating bath to carry out, and effectively avoids the coating that high temperature causes and the deterioration and the matrix dilatational strain of body material performance.And the method for built-up welding or thermospray all can inevitably be brought because problems such as the high thermal stress of the physico-chemical property deterioration of coated material that high temperature causes and matrix, material oxidation, material, matrix dilatational straiies.Though cold spray technique can be avoided the problems referred to above of being brought by high temperature, but its coating and high base strength are not good, especially in cold and heat succeed each other violent strip or strand casting process, more require coating and crystallization roller or crystallizer body to have good binding intensity.Chinese patent 200610030213.4 has been introduced and has been adopted that the electronickelling technology can obtain on the crystallization roller that thickness is even, stress is little, coating and basal body binding force by force, coating that the cold-and-heat resistent fatigue property is good.But the hardness of this nickel coating is not high, and high temperature is softening easily down, and abrasion resistance properties is general.
Summary of the invention
Technical problem to be solved by this invention provides a kind of thin band continuous casting crystallization roller or strand continuous cast mold surface repairing method, utilizes present method to make the crystallization roller or the crystallizer coating even compact of reparation, and internal stress is low, with the high base strength height.Effectively improve the wearability of crystallization roller or crystallizer; high temperature softening resistance and cold-and-heat resistent fatigue; reduced the coating internal stress; strengthened binding force of cladding material; make lip-deep heat exchanging process uniform high-efficiency more; realization is to the protection of crystallization roller or crystallizer body; thermal stresses that produces when alleviating casting and mechanical stress are to the damage of crystallization roller or crystallizer; avoid of the wearing and tearing of rolling throwing to crystallization roller or crystallizer; prolong the work-ing life of crystallization roller or crystallizer, thereby can reduce strip; strand continuous casting production cost; improve strip; the production efficiency of strand continuous casting and quality product.
For solving the problems of the technologies described above, thin band continuous casting crystallization roller of the present invention or strand continuous cast mold surface repairing method comprise the steps:
Step 1, crystallization roller or crystallizer surface are carried out mechanical process, remove surface oxide layer and rejected region, detect crystallization roller or crystallizer dimensional data, determine crystallization roller or crystallizer surface repair layer size;
Step 2, crystallization roller or crystallizer surface are plated preceding pre-treatment, adopt organic solvent cleaning, alkali degreasing, electrolytic degreasing, acid etch and activation treatment.
Step 3, electroplate the individual layer nickel-base alloy at crystallization roller or crystallizer surface, the content of nickel is 1%～99% in the described nickel-base alloy, described nickel-base alloy is binary nickel-base alloy or ternary nickel-base alloy, gained coating is the uniform alloy coating that each element ratio remains unchanged at thickness direction, or the graded alloy coating of element ratio gradual change, described graded alloy coating obtains by changing electroplating current density or stirring intensity;
Step 4, when crystallization roller or crystallizer surface coating reach product size and require, finish to electroplate, and crystallization roller or crystallizer carried out machining according to the data of step 1, to reach crystallization roller or crystallizer dimensional parameters, recover crystallization roller or crystallizer effectiveness.
Above-mentioned binary nickel-base alloy is Ni-Co alloy, Co-Ni alloy, Ni-P alloy, Ni-Fe alloy, Ni-Cr alloy, Ni-W alloy, Ni-B alloy, Ni-Sn alloy and Ni-Zn alloy, and above-mentioned ternary nickel-base alloy is to add the ternary nickel-base alloy that elements such as W, P or B form in described binary nickel-base alloy.
The individual layer nickel alloy plating layer of present method above-mentioned steps three replaces with the individual layer nickel-base composite coat, described nickel-base composite coat with pure nickel or described nickel-base alloy as matrix metal, adopt compound coating technology that the solid particulate or the fiber even dispersion of one or more microns or nanoscale are formed composite deposite to described matrix metal, gained coating is the even composite deposite that disperse phase content remains unchanged at thickness direction, or the graded composite coating of disperse phase content gradual change, described graded composite coating obtains by changing electroplating current density or stirring intensity;
Above-mentioned solid particulate or fiber are oxide ceramics Al
2O
3, ZrO
2, SiO
2, nitride ceramics Si
3N
4, BN, carbide ceramics SiC, WC, Cr
3C
2And CaF
2, MoS
2, tetrafluoroethylene, diamond, graphite.
Present method can be before electroplating described individual layer nickel-base alloy or individual layer nickel-base composite coat to crystallization roller or crystallizer surface, earlier to crystallization roller or crystallizer surface plating one deck pure-nickel-layer, to improve the bonding force of coating and crystallization roller or crystallizer matrix, described pure-nickel-layer thickness is 0.01～3.0mm, then crystallization roller or crystallizer surface are repeated to electroplate described individual layer nickel-base alloy or individual layer nickel-base composite coat, at crystallization roller or crystallizer surface outermost coating re-plating one deck chromium, so that crystallization roller or crystallizer surface form multilayer coating.
After finishing, above-mentioned all kinds of plating can heat-treat, to eliminate coating stress crystallization roller or crystallizer.
Above-mentioned all kinds of electroplating activities can carry out in horizontal coating bath or vertical coating bath.
Because thin band continuous casting crystallization roller of the present invention or strand continuous cast mold surface repairing method have adopted technique scheme, after promptly the crystallization roller that damages or crystallizer surface being carried out pre-treatment, at crystallization roller or crystallizer surface plating single or multiple lift coating, single or multiple lift coating is respectively nickel-base alloy and nickel-base composite coat, and can electroplate one deck chromium at the outermost surface of crystallization roller or crystallizer, when reaching the product size requirement, single or multiple lift coating stops to electroplate, then crystallization roller or crystallizer are carried out suitable machining, can recover the effectiveness of crystallization roller or crystallizer; Present method makes the crystallization roller or the crystallizer coating even compact of reparation, and internal stress is low, with the high base strength height.Effectively improve the wearability of crystallization roller or crystallizer; high temperature softening resistance and cold-and-heat resistent fatigue; reduced the coating internal stress; strengthened binding force of cladding material; make the heat exchanging process uniform high-efficiency more on the matrix surface; realization is to the protection of crystallization roller or crystallizer body; thermal stresses that produces when alleviating casting and mechanical stress are to the damage of crystallization roller or crystallizer; avoid of the wearing and tearing of rolling throwing to crystallization roller or crystallizer; prolong the work-ing life of crystallization roller or crystallizer, thereby can reduce strip; strand continuous casting production cost; improve strip; the production efficiency of strand continuous casting and quality product.
Embodiment
Thin band continuous casting crystallization roller of the present invention or strand connect the crystallizer surface repairing method and comprise the steps:
Step 1, crystallization roller or crystallizer surface are carried out mechanical process, remove surface oxide layer and rejected region, detect crystallization roller or crystallizer dimensional data, determine crystallization roller or crystallizer surface repair layer size;
Step 2, crystallization roller or crystallizer surface are plated preceding pre-treatment, adopt organic solvent cleaning, alkali degreasing, electrolytic degreasing, acid etch and activation treatment;
Step 3, electroplate the individual layer nickel-base alloy at crystallization roller or crystallizer surface, the content of nickel is 1%～99% in the described nickel-base alloy, described nickel-base alloy is binary nickel-base alloy or ternary nickel-base alloy, gained coating is the uniform alloy coating that each element ratio remains unchanged at thickness direction, or the graded alloy coating of element ratio gradual change, described graded alloy coating obtains by changing electroplating current density or stirring intensity;
Step 4, when crystallization roller or crystallizer surface coating reach product size and require, finish to electroplate, and crystallization roller or crystallizer carried out machining according to the data of step 1, to reach crystallization roller or crystallizer dimensional parameters, recover crystallization roller or crystallizer effectiveness.
Above-mentioned binary nickel-base alloy is Ni-Co alloy, Co-Ni alloy, Ni-P alloy, Ni-Fe alloy, Ni-Cr alloy, Ni-W alloy, Ni-B alloy, Ni-Sn alloy and Ni-Zn alloy, and above-mentioned ternary nickel-base alloy is to add the ternary nickel-base alloy that elements such as W, P or B form in described binary nickel-base alloy.
The individual layer nickel alloy plating layer of present method above-mentioned steps three replaces with the individual layer nickel-base composite coat, described nickel-base composite coat with pure nickel or described nickel-base alloy as matrix metal, adopt compound coating technology that the solid particulate or the fiber even dispersion of one or more microns or nanoscale are formed composite deposite to described matrix metal, gained coating is the even composite deposite that disperse phase content remains unchanged at thickness direction, or the graded composite coating of disperse phase content gradual change, described graded composite coating obtains by changing electroplating current density or stirring intensity;
Above-mentioned solid particulate or fiber are oxide ceramics Al
2O
3, ZrO
2, SiO
2, nitride ceramics Si
3N
4, BN, carbide ceramics SiC, WC, Cr
3C
2And CaF
2, MoS
2, tetrafluoroethylene, diamond, graphite.
Present method can be before electroplating described individual layer nickel-base alloy or individual layer nickel-base composite coat to crystallization roller or crystallizer surface, earlier to crystallization roller or crystallizer surface plating one deck pure-nickel-layer, to improve the bonding force of coating and crystallization roller or crystallizer matrix, described pure-nickel-layer thickness is 0.01～3.0mm, then crystallization roller or crystallizer surface are repeated to electroplate described individual layer nickel-base alloy or individual layer nickel-base composite coat, at crystallization roller or crystallizer surface outermost coating re-plating one deck chromium, so that crystallization roller or crystallizer surface form multilayer coating.
After finishing, above-mentioned all kinds of plating can heat-treat, to eliminate coating stress crystallization roller or crystallizer.Above-mentioned all kinds of electroplating activities can carry out in horizontal coating bath or vertical coating bath.
Present method can be implemented by following concrete grammar:
Embodiment one
1. crystallization roller or crystallizer are carried out the machining surface processing treatment, remove surface oxide layer and rejected region, surfaceness is about 3.2;
2. use acetone to clean the greasy dirt and the scraps bits of matrix surface, use flushing with clean water then;
3. use and electroplate with conventional alkali degreasing solution wiping matrix surface, solution temperature is about 50 ℃, uses flushing with clean water then;
4. crystallization roller or crystallizer are carried out electrolytic degreasing, crystallization roller or crystallizer are immersed in the degreasing fluid, and the degreasing fluid temperature is about 70 ℃, and current density is 5.0A/dm
2, the treatment time is 3min, hangs out then, uses flushing with clean water;
5. use to electroplate and with conventional acid etching solution crystallization roller or crystallizer surface are carried out activation treatment, the etch time is 1min, uses flushing with clean water then;
6. before crystallization roller or crystallizer plating, adopt weakly acid soln spray matrix surface, it is carried out activation treatment;
7. crystallization roller or crystallizer surface are electroplated the Co-Ni alloy, bath temperature is 40 ℃, and current density is 30mA/cm
2, plating bath adopts pneumatic blending, and the mass ratio of Co and Ni is about 8: 2 in the gained Co-Ni coating, adopts horizontal plating tank, and crystallization roller or crystallizer rotating speed are 5 commentaries on classics/min, and electroplate liquid is formed proportioning such as following table:
| Rose vitriol | ??145g/l |
| Single nickel salt | ??210g/l |
| Nickelous chloride | ??15g/l |
| Boric acid | ??25g/l |
| Sodium laurylsulfonate | ??0.08g/l |
| The destressing agent | ??0.05g/l |
8. finish to electroplate after galvanization coating thickness reaches product requirement thickness, heat-treat, thermal treatment temp is 300 ℃, is incubated 2～5 hours, and stove is cold.
9. by crystallization roller or the requirement of crystallizer physical dimension it is plated the back machining.
Thickness by above process gained coating is even, fine and close, has good binding intensity with matrix, its abrasion resistance properties, cold-and-heat resistent excelling in fatigue property.
What present embodiment adopted is to electroplate the Co-Ni binary alloy, also can be other binary nickel-base alloys and ternary nickel-base alloy.The binary nickel-base alloy is the Ni-Co alloy for example, Ni-P alloy, Ni-Fe alloy, Ni-Cr alloy, Ni-W alloy, Ni-B alloy, Ni-Sn alloy, Ni-Zn alloy etc.; The ternary nickel-base alloy for example adds elements such as W or P or B and forms the ternary nickel-base alloy in above-mentioned binary nickel-base alloy.
Embodiment two
Step is with embodiment 1, and different is to increase the nickel preplating step after step 6 one.What nickel preplating adopted is conventional nickel chloride solution nickel preplating technology.
Thickness by above process gained coating is even, fine and close, and is particularly good with high base strength, its abrasion resistance properties, cold-and-heat resistent excelling in fatigue property.
Embodiment three
Step is with embodiment 1, and different is in step 7, adopts the mode that continuously changes current density to prepare the Co-Ni coating with component gradient structure, and current density is by 100mA/cm
2Reduce to 10mA/cm
2, then obtain the gradient Co-Ni coating that Co content from inside to outside increases gradually.
Thickness by above process gained coating is even, fine and close, has good binding intensity with matrix, its abrasion resistance properties, cold-and-heat resistent excelling in fatigue property.
Embodiment four
Step is with embodiment 1, and different is in step 7, and present embodiment is electroplated Ni-Cr
3C
2Composite deposite, bath temperature are 40 ℃, and current density is 25mA/cm
2, plating bath adopts pneumatic blending.Cr in the gained composite deposite
3C
2The quality percentage composition is about 15%.Adopt vertical plating tank.Electroplate liquid is formed proportioning such as following table:
| Nickel sulfamic acid | ??290g/l |
| Nickelous chloride | ??15g/l |
| Boric acid | ??25g/l |
| ??Cr 3C 2(1 micron) | ??25g/l |
| Sodium laurylsulfonate | ??0.08g/l |
| Dispersion agent | ??0.1g/l |
Thickness by above process gained coating is even, fine and close, has good binding intensity with matrix, and the cold-and-heat resistent fatigue property is good, and its abrasion resistance properties is particularly excellent.
That present embodiment adopts is electroplated Ni-Cr
3C
2Composite deposite, its matrix also can be binary nickel-base alloy and ternary nickel-base alloy, and its compound disperse phase also can be that the solid particulate or the fiber even dispersion of other one or more microns or nanoscale forms composite deposite to matrix metal.The for example various potteries of solid particulate or fiber: oxide ceramics Al
2O
3, ZrO
2, SiO
2Deng, nitride ceramics Si
3N
4, BN etc., carbide ceramics SiC, WC, Cr
3C
2Deng, and CaF
2, MoS
2, tetrafluoroethylene, diamond, other particles such as graphite or fiber.
Embodiment five
Step is with embodiment 1, and different is in step 7, and present embodiment is double-deck coating composite plating Ni and Ni-Co-SiC coating.At first electroplate pure nickel, bath temperature is 50 ℃, and current density is 30mA/cm
2, plating bath adopts pneumatic blending.Electroplate liquid is formed proportioning:
| Nickel sulfamic acid | ??340g/l |
| Nickelous chloride | ??10g/l |
| Boric acid | ??25g/l |
| Sodium laurylsulfonate | ??0.08g/l |
Nickel layer thickness is decided on total thickness of coating.
Next carry out electroplated Ni-Co-SiC coating at nickel layer.Can carry out mechanical workout to nickel layer earlier, and then electroplate, need carry out routine plating pre-treatment this moment to the nickel surface after the machining.Also can after nickel plating finishes, need not to plate especially pre-treatment, directly carry out Ni-Co-SiC and electroplate.Its electroplating technology: bath temperature is 50 ℃, and current density is 25mA/cm
2, plating bath adopts pneumatic blending.Adopt vertical plating tank.Electroplate liquid is formed proportioning:
| Single nickel salt | ??300g/l |
| Rose vitriol | ??7g/l |
| Nickelous chloride | ??10g/l |
| Boric acid | ??25g/l |
| SiC (1 micron) | ??20g/l |
| Sodium laurylsulfonate | ??0.08g/l |
| The destressing agent | ??0.05g/l |
The mass ratio of Ni and Co is about 8: 2 in the gained composite deposite, and SiC quality percentage composition is about 8%.
Thickness by above process gained coating is even, fine and close, has good binding intensity with matrix, and its abrasion resistance properties, cold-and-heat resistent fatigue property are particularly excellent.
What present embodiment adopted is double-deck coating composite plating Ni and Ni-Co-SiC coating.One or more layers coating on its nickel also can be above-mentioned other alloy layers or composite deposite, and outermost layer can plate one deck Cr again, finally forms multilayer coating.For example Ni and Co-Ni, Ni and Ni-Co, Ni and Co-Ni and Cr, Ni and Co-Ni-Al
2O
3, Ni and Ni-SiC, Ni and Ni-Cr
3C
2, Ni and Ni-SiC and Ni-P, Ni and Ni-P-ZrO
2Deng.
Embodiment six
Step is with embodiment 5, and different is when electroplated Ni-Co-SiC coating, adopts the mode that continuously changes current density to prepare the Ni-Co-SiC coating with composition and diffusing particle gradient-structure, and current density is by 100mA/cm
2Reduce to 10mA/cm
2, then obtain the gradient Ni-Co-SiC coating that Co and SiC content from inside to outside increase gradually.
Thickness by above process gained coating is even, fine and close, has good binding intensity with matrix, and its abrasion resistance properties, cold-and-heat resistent fatigue property are particularly excellent.
What present embodiment adopted is double-deck coating composite plating Ni and Ni-Co-SiC coating.One or more layers coating on its nickel also can be above-mentioned other alloy layers or composite deposite, and outermost layer can plate one deck chromium again, finally forms multilayer coating.For example Ni and Co-Ni, Ni and Ni-Co, Ni and Co-Ni and Cr, Ni and Co-Ni-Al
2O
3, Ni and Ni-SiC, Ni and Ni-Cr
3C
2, Ni and Ni-SiC and Ni-P, Ni and Ni-P-ZrO
2Deng.
Present method utilizes electroplating technology to provide competent means and method for crystallization roller or crystallizer to the individual demand of coated material performance, for example various alloy platings, compound plating, multilayer plating, gradient coating and abundant surperficial pretreatment technology etc., can make personalized coating system and technical project at individual demand, make the possibility that develops into of crystallization roller or crystallizer surface recovery technique.
Utilize present method to make the crystallization roller of damage or crystallizer recover effectiveness, its repair process carries out in the low temperature plating bath, thereby the coating that the high temperature repair process caused and the deterioration and the matrix dilatational strain of body material performance have effectively been avoided, gained coating even compact, internal stress is low, with the high base strength height; Before plating, crystallization roller or crystallizer surface are done suitable pre-treatment, make that the bonding force between gained coating and the matrix is very excellent; Present method adopts alloy plating, compound plating, multilayer plating that crystallization roller or crystallizer surface are carried out repair process respectively, can do personalized coating system and technical project to the individual demand of coated material performance at crystallization roller or crystallizer applying working condition, alloy layer and composite deposite can effectively improve the wearability of crystallization roller or crystallizer, high temperature resists performances such as softening, multilayer coating adopts the transition layer of nickel coating as matrix and overlay coating, can effectively improve performances such as coating and basal body binding force and cold-and-heat resistent fatigue; In addition, above-mentioned coating also can be prepared into the coating of gradient-structure, makes matrix and overlay coating form the material composition zone of transition, and the physical and chemical performance of material mates more everywhere, has reduced the coating internal stress, has strengthened performances such as binding force of cladding material and cold-and-heat resistent fatigue.Present method gained coating can effectively be adjusted the Heat transfer coefficient of crystallization roller or crystallizer on the one hand; so that the uniform high-efficiency more of the heat exchanging process on the matrix surface; can protect crystallization roller or crystallizer body on the other hand; thermal stresses that produces when alleviating casting and mechanical stress are avoided the wearing and tearing of rolling throwing to crystallization roller or crystallizer to the damage of crystallization roller or crystallizer.The present invention has prolonged the work-ing life of crystallization roller or crystallizer, thereby can reduce the production efficiency and the quality product of strip, strand continuous casting production cost, raising strip, strand continuous casting.
After present method is carried out pre-treatment to the crystallization roller that damages or crystallizer surface, at crystallization roller or crystallizer surface plating single or multiple lift coating, single or multiple lift coating is respectively nickel-base alloy or nickel-base composite coat, and electroplate one deck chromium at the outermost surface of crystallization roller or crystallizer, when reaching product requirement thickness, single or multiple lift coating stops to electroplate, then crystallization roller or crystallizer are carried out suitable machining, can recover the effectiveness of crystallization roller or crystallizer; Present method makes the crystallization roller or the crystallizer coating even compact of reparation, and internal stress is low, with the high base strength height.Effectively improve the wearability of crystallization roller or crystallizer; high temperature softening resistance and cold-and-heat resistent fatigue; reduced the coating internal stress; strengthened binding force of cladding material; make the heat exchanging process uniform high-efficiency more on the matrix surface; realization is to the protection of crystallization roller or crystallizer body; thermal stresses that produces when alleviating casting and mechanical stress are to the damage of crystallization roller or crystallizer; avoid of the wearing and tearing of rolling throwing to crystallization roller or crystallizer; prolong the work-ing life of crystallization roller or crystallizer, thereby can reduce strip; strand continuous casting production cost; improve strip; the production efficiency of strand continuous casting and quality product.
Claims (9)
1. thin band continuous casting crystallization roller or strand continuous cast mold surface repairing method is characterized in that present method comprises the steps:
Step 1, crystallization roller or crystallizer surface are carried out mechanical process, remove surface oxide layer and rejected region, detect crystallization roller or crystallizer dimensional data, determine crystallization roller or crystallizer surface repair layer size;
Step 2, crystallization roller or crystallizer surface are plated preceding pre-treatment, adopt organic solvent cleaning, alkali degreasing, electrolytic degreasing, acid etch and activation treatment;
Step 3, electroplate the individual layer nickel-base alloy at crystallization roller or crystallizer surface, the content of nickel is 1%～99% in the described nickel-base alloy, described nickel-base alloy is binary nickel-base alloy or ternary nickel-base alloy, gained coating is the uniform alloy coating that each element ratio remains unchanged at thickness direction, or the graded alloy coating of element ratio gradual change, described graded alloy coating obtains by changing electroplating current density or stirring intensity;
Step 4, when crystallization roller or crystallizer surface coating reach product size and require, finish to electroplate, and crystallization roller or crystallizer carried out machining according to the data of step 1, to reach crystallization roller or crystallizer dimensional parameters, recover crystallization roller or crystallizer effectiveness.
2. thin band continuous casting crystallization roller according to claim 1 or strand continuous cast mold surface repairing method, it is characterized in that: described binary nickel-base alloy is Ni-Co alloy, Co-Ni alloy, Ni-P alloy, Ni-Fe alloy, Ni-Cr alloy, Ni-W alloy, Ni-B alloy, Ni-Sn alloy and Ni-Zn alloy, and described ternary nickel-base alloy is to add the ternary nickel-base alloy that elements such as W, P or B form in described binary nickel-base alloy.
3. thin band continuous casting crystallization roller according to claim 1 or strand continuous cast mold surface repairing method, it is characterized in that: the individual layer nickel alloy plating layer of described step 3 replaces with the individual layer nickel-base composite coat, described nickel-base composite coat with pure nickel or described nickel-base alloy as matrix metal, adopt compound coating technology that the solid particulate or the fiber even dispersion of one or more microns or nanoscale are formed composite deposite to described matrix metal, gained coating is the even composite deposite that disperse phase content remains unchanged at thickness direction, or the graded composite coating of disperse phase content gradual change, described graded composite coating obtains by changing electroplating current density or stirring intensity;
4. thin band continuous casting crystallization roller according to claim 3 or strand continuous cast mold surface repairing method is characterized in that: described solid particulate or fiber are oxide ceramics Al
2O
3, ZrO
2, SiO
2, nitride ceramics Si
3N
4, BN, carbide ceramics SiC, WC, Cr
3C
2And CaF
2, MoS
2, tetrafluoroethylene, diamond, graphite.
5. according to claim 1 or 3 described thin band continuous casting crystallization rollers or strand continuous cast mold surface repairing method, it is characterized in that: before crystallization roller or crystallizer surface are electroplated described individual layer nickel-base alloy or individual layer nickel-base composite coat, crystallization roller or crystallizer surface are plated one deck pure-nickel-layer earlier, to improve the bonding force of coating and crystallization roller or crystallizer matrix, described pure-nickel-layer thickness is 0.01～3.0mm, then crystallization roller or crystallizer surface are repeated to electroplate described individual layer nickel-base alloy or individual layer nickel-base composite coat, at crystallization roller or crystallizer surface outermost coating re-plating one deck chromium, so that crystallization roller or crystallizer surface form multilayer coating.
6. according to claim 1 or 3 described thin band continuous casting crystallization rollers or strand continuous cast mold surface repairing method, it is characterized in that: finish the back in described plating crystallization roller or crystallizer are heat-treated, to eliminate coating stress.
7. thin band continuous casting crystallization roller according to claim 5 or strand continuous cast mold surface repairing method is characterized in that: finish the back in described plating crystallization roller or crystallizer are heat-treated, to eliminate coating stress.
8. according to claim 1 or 3 described thin band continuous casting crystallization rollers or strand continuous cast mold surface repairing method, it is characterized in that: described plating is carried out in horizontal coating bath or vertical coating bath.
9. thin band continuous casting crystallization roller according to claim 5 or strand continuous cast mold surface repairing method is characterized in that: described plating is carried out in horizontal coating bath or vertical coating bath.
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| CN102773434A (en) * | 2012-08-01 | 2012-11-14 | 西峡龙成特种材料有限公司 | Nanocomposite electroplating layer copper plate of continuous casting crystallizer and preparation process of nanocomposite electroplating layer copper plate |
| CN103205791A (en) * | 2013-04-15 | 2013-07-17 | 河南科技大学 | Preparation method of nickel-cubic boron nitride film |
| CN103302442A (en) * | 2013-06-18 | 2013-09-18 | 青岛云路新能源科技有限公司 | Method for repairing surface of copper roller of amorphous nanocrystalline crystallizer |
| CN103481025A (en) * | 2013-08-28 | 2014-01-01 | 青岛云路新能源科技有限公司 | Modifying method for copper roller face of crystallizer |
| CN103567404A (en) * | 2013-11-04 | 2014-02-12 | 虞雪君 | Composite coating material used for crystallizer and preparation method |
| CN103567405A (en) * | 2013-11-04 | 2014-02-12 | 虞雪君 | Composite coating material used for crystallizer of metallurgical continuous caster |
| CN103820828A (en) * | 2014-01-28 | 2014-05-28 | 秦皇岛首钢长白结晶器有限责任公司 | Nanometer Ni-Co-B coating technology for copper plate/copper tube of continuous casting crystallizer |
| CN103834973A (en) * | 2012-11-22 | 2014-06-04 | 宝山钢铁股份有限公司 | Electroplate restoration method for Hastelloy conductive roller surface |
| CN103949601A (en) * | 2014-04-30 | 2014-07-30 | 宝山钢铁股份有限公司 | Preparation method for thin-strip casting crystallization roller surface appearance |
| CN104099647A (en) * | 2013-04-02 | 2014-10-15 | 中国兵器工业第五九研究所 | Preparation method of Ni-Co-Al2O3 gradient composite coating |
| CN104120461A (en) * | 2013-04-28 | 2014-10-29 | 上海宝钢工业技术服务有限公司 | Method for preparing gradient alloy plating layer on surface of thin strip continuous casting crystallization roller and plating solution |
| CN104726913A (en) * | 2013-12-18 | 2015-06-24 | 上海宝钢工业技术服务有限公司 | Anticorrosion treatment method for carbon steel water tank of continuous casting crystallizer |
| CN105112961A (en) * | 2015-09-22 | 2015-12-02 | 太仓市金鹿电镀有限公司 | Zinc-nickel alloy electroplating process |
| CN105478693A (en) * | 2016-01-21 | 2016-04-13 | 张颖 | Preparation method of continuous casting roller type crystallizer |
| CN105568331A (en) * | 2016-01-21 | 2016-05-11 | 张颖 | Roll strip type electroplating method for crystallizer roll surface |
| CN105921706A (en) * | 2016-05-19 | 2016-09-07 | 西峡龙成特种材料有限公司 | On-line repair method for continuous casting crystallizer copper plate |
| CN106435539A (en) * | 2016-07-21 | 2017-02-22 | 江苏盈科汽车空调有限公司 | Improved nickel-phosphorus composite chemical plating liquid of vehicle air conditioning compressor swash plate |
| CN109540787A (en) * | 2018-11-26 | 2019-03-29 | 杨凌美畅新材料股份有限公司 | The reliability checking method of binding force between a kind of nickel aminosulfonic bath coating |
| CN109550910A (en) * | 2017-09-25 | 2019-04-02 | 上海宝钢工业技术服务有限公司 | The restorative procedure of chamber crystallizer narrow-surface copper |
| CN109604927A (en) * | 2018-12-19 | 2019-04-12 | 安徽泰尔表面工程技术有限公司 | The build-up welding repair method of continuous cast mold short side copper sheet side |
| CN111621822A (en) * | 2020-06-24 | 2020-09-04 | 中国航空制造技术研究院 | Surface repairing method for electrochemical micro-additive |
| CN112439784A (en) * | 2019-08-29 | 2021-03-05 | 青岛九环新越新能源科技股份有限公司 | Production method of composite metal belt based on liquid metal |
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2008
- 2008-10-17 CN CN200810201318A patent/CN101724874A/en active Pending
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094220A (en) * | 2011-01-21 | 2011-06-15 | 仇文东 | Method for repairing titanium mother board |
| CN102773434A (en) * | 2012-08-01 | 2012-11-14 | 西峡龙成特种材料有限公司 | Nanocomposite electroplating layer copper plate of continuous casting crystallizer and preparation process of nanocomposite electroplating layer copper plate |
| CN103834973A (en) * | 2012-11-22 | 2014-06-04 | 宝山钢铁股份有限公司 | Electroplate restoration method for Hastelloy conductive roller surface |
| CN103834973B (en) * | 2012-11-22 | 2016-08-24 | 宝山钢铁股份有限公司 | A kind of plating restorative procedure of Hastelloy conductive rollers roll surface |
| CN104099647A (en) * | 2013-04-02 | 2014-10-15 | 中国兵器工业第五九研究所 | Preparation method of Ni-Co-Al2O3 gradient composite coating |
| CN103205791A (en) * | 2013-04-15 | 2013-07-17 | 河南科技大学 | Preparation method of nickel-cubic boron nitride film |
| CN103205791B (en) * | 2013-04-15 | 2016-08-10 | 河南科技大学 | A kind of preparation method of nickel-cubic boron nitride film |
| CN104120461A (en) * | 2013-04-28 | 2014-10-29 | 上海宝钢工业技术服务有限公司 | Method for preparing gradient alloy plating layer on surface of thin strip continuous casting crystallization roller and plating solution |
| CN103302442A (en) * | 2013-06-18 | 2013-09-18 | 青岛云路新能源科技有限公司 | Method for repairing surface of copper roller of amorphous nanocrystalline crystallizer |
| CN103481025A (en) * | 2013-08-28 | 2014-01-01 | 青岛云路新能源科技有限公司 | Modifying method for copper roller face of crystallizer |
| CN103481025B (en) * | 2013-08-28 | 2016-01-20 | 青岛云路新能源科技有限公司 | The method of modifying on crystallizer copper roller surface |
| CN103567405A (en) * | 2013-11-04 | 2014-02-12 | 虞雪君 | Composite coating material used for crystallizer of metallurgical continuous caster |
| CN103567404A (en) * | 2013-11-04 | 2014-02-12 | 虞雪君 | Composite coating material used for crystallizer and preparation method |
| CN104726913A (en) * | 2013-12-18 | 2015-06-24 | 上海宝钢工业技术服务有限公司 | Anticorrosion treatment method for carbon steel water tank of continuous casting crystallizer |
| CN103820828A (en) * | 2014-01-28 | 2014-05-28 | 秦皇岛首钢长白结晶器有限责任公司 | Nanometer Ni-Co-B coating technology for copper plate/copper tube of continuous casting crystallizer |
| CN103949601A (en) * | 2014-04-30 | 2014-07-30 | 宝山钢铁股份有限公司 | Preparation method for thin-strip casting crystallization roller surface appearance |
| CN105112961A (en) * | 2015-09-22 | 2015-12-02 | 太仓市金鹿电镀有限公司 | Zinc-nickel alloy electroplating process |
| CN105568331A (en) * | 2016-01-21 | 2016-05-11 | 张颖 | Roll strip type electroplating method for crystallizer roll surface |
| CN105478693A (en) * | 2016-01-21 | 2016-04-13 | 张颖 | Preparation method of continuous casting roller type crystallizer |
| CN105921706A (en) * | 2016-05-19 | 2016-09-07 | 西峡龙成特种材料有限公司 | On-line repair method for continuous casting crystallizer copper plate |
| CN106435539A (en) * | 2016-07-21 | 2017-02-22 | 江苏盈科汽车空调有限公司 | Improved nickel-phosphorus composite chemical plating liquid of vehicle air conditioning compressor swash plate |
| CN109550910B (en) * | 2017-09-25 | 2021-12-28 | 上海宝钢工业技术服务有限公司 | Repair method for narrow-face copper plate of chamfering crystallizer |
| CN109550910A (en) * | 2017-09-25 | 2019-04-02 | 上海宝钢工业技术服务有限公司 | The restorative procedure of chamber crystallizer narrow-surface copper |
| CN109540787A (en) * | 2018-11-26 | 2019-03-29 | 杨凌美畅新材料股份有限公司 | The reliability checking method of binding force between a kind of nickel aminosulfonic bath coating |
| CN109604927A (en) * | 2018-12-19 | 2019-04-12 | 安徽泰尔表面工程技术有限公司 | The build-up welding repair method of continuous cast mold short side copper sheet side |
| CN112439784A (en) * | 2019-08-29 | 2021-03-05 | 青岛九环新越新能源科技股份有限公司 | Production method of composite metal belt based on liquid metal |
| CN112439784B (en) * | 2019-08-29 | 2023-09-22 | 青岛九环新越新能源科技股份有限公司 | Composite metal belt production method based on liquid metal |
| CN111621822A (en) * | 2020-06-24 | 2020-09-04 | 中国航空制造技术研究院 | Surface repairing method for electrochemical micro-additive |
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