CN112626440A - 一种用于卧式连退炉的炉辊表面强化涂层及制备方法 - Google Patents
一种用于卧式连退炉的炉辊表面强化涂层及制备方法 Download PDFInfo
- Publication number
- CN112626440A CN112626440A CN202011481777.6A CN202011481777A CN112626440A CN 112626440 A CN112626440 A CN 112626440A CN 202011481777 A CN202011481777 A CN 202011481777A CN 112626440 A CN112626440 A CN 112626440A
- Authority
- CN
- China
- Prior art keywords
- furnace
- roller
- layer
- spraying
- coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 40
- 239000011248 coating agent Substances 0.000 title claims abstract description 39
- 238000000137 annealing Methods 0.000 title claims abstract description 38
- 238000005728 strengthening Methods 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 238000005507 spraying Methods 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 238000007750 plasma spraying Methods 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 18
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000000919 ceramic Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 239000006194 liquid suspension Substances 0.000 claims abstract description 3
- 238000005488 sandblasting Methods 0.000 claims description 18
- 230000003746 surface roughness Effects 0.000 claims description 18
- 238000005498 polishing Methods 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 238000000227 grinding Methods 0.000 claims description 9
- 239000012159 carrier gas Substances 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 229910052681 coesite Inorganic materials 0.000 claims description 5
- 229910052906 cristobalite Inorganic materials 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 229910052682 stishovite Inorganic materials 0.000 claims description 5
- 229910052905 tridymite Inorganic materials 0.000 claims description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000003350 kerosene Substances 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000005422 blasting Methods 0.000 claims description 2
- 238000007788 roughening Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 13
- 239000011247 coating layer Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 11
- 239000010959 steel Substances 0.000 abstract description 11
- 229910045601 alloy Inorganic materials 0.000 abstract description 7
- 239000000956 alloy Substances 0.000 abstract description 7
- 238000005524 ceramic coating Methods 0.000 abstract description 6
- 230000003749 cleanliness Effects 0.000 abstract description 4
- 230000007704 transition Effects 0.000 abstract description 3
- 238000003466 welding Methods 0.000 description 5
- 239000011224 oxide ceramic Substances 0.000 description 4
- 229910052574 oxide ceramic Inorganic materials 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000037452 priming Effects 0.000 description 3
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical class [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005246 galvanizing Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000259 anti-tumor effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000010285 flame spraying Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/562—Details
- C21D9/563—Rolls; Drums; Roll arrangements
-
- 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
- C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- 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
- C23C4/073—Metallic material containing MCrAl or MCrAlY alloys, where M is nickel, cobalt or iron, with or without non-metal elements
-
- 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
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
- C23C4/11—Oxides
-
- 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
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
本发明公开一种用于卧式连退炉的炉辊表面强化涂层及制备方法,包括由炉辊基体向外依次设置的底层、工作层和封孔固化层;封孔固化层采用耐高温材料以液态混悬液进行涂刷并加热渗透固化获得;工作层采用等离子喷涂混合陶瓷粉末的方式加工制备获得;底层采用超音速喷涂的方式加工制备获得,底层材质采用MCrAlY;本发明采用高温合金打底加陶瓷涂层工作层方式对炉辊表面进行表面强化,高温合金起到基体与陶瓷涂层的过渡作用,改善涂层结合性能,工作层在卧式连退炉高温、复杂气氛和较差清洁度的工况下,始终不与带钢表面发生反应,封孔固化层提升涂层高温稳定性、改善表面摩擦性能,从而消除了炉辊表面产生积瘤的因素点,提升了卧式连退炉炉辊表面性能。
Description
技术领域
本发明涉及辊面强化涂层技术领域,具体涉及一种用于卧式连退炉的炉辊表面强化涂层及制备方法。
背景技术
冷轧镀锌线及硅钢生产线有一种卧式结构连续退火炉,整体结构为各环节直线铺开、空间上不交叠,板带从炉内运行轨迹为平行直线运行,这种结构连退炉炉内连续布置大量炉辊,供板带运行的支撑与传动,上百只炉辊一字铺开,炉辊间距2m左右。
卧式连退炉有别于常规镀锌线和连退线的立式炉,由于功能和空间结构不同,造成炉内炉辊的结构也有区别。卧式连退炉炉内辊多为小直径、细长轴类辊体,理论上炉辊表面与带钢呈切线接触,实际由于重力、速度等影响,带钢与辊面也会有一定程度的面接触。炉子前段是无氧化段(NOF段),采用明火加热方式,退火炉内是氧化性气氛,加热钢带的同时,会对钢带表面残留物及钢带表面产生氧化,从而形成以FeO/Fe2O3/Fe3O4为主的多种氧化物。在热钢带自身重力及与炉辊水平相对运动产生的滑动摩擦力的双重外力作用下,加之这些铁氧化物与炉辊材料(多为耐热不锈钢)具有很强的亲和性和互溶性,容易粘附在辊面上并与炉辊的基体材料发生化学反应形成难以去除的积瘤,另外长期在高温下和炉辊与带钢之间的频繁接触对磨下,积瘤不断产生和长大。
因卧式连退炉炉内气氛纯度相对较差、炉内清洁度也较差,故其炉内炉辊积瘤问题尤其严重,目前卧式连退炉的炉辊基都是无涂层或带常规涂层,抗积瘤效果差,炉辊寿命低,只能通过短期频繁换辊来维持生产。
鉴于上述缺陷,本发明创作者经过长时间的研究和实践终于获得了本发明。
发明内容
为解决上述技术缺陷,本发明采用的技术方案在于,提供一种用于卧式连退炉的炉辊表面强化涂层,包括由炉辊基体向外依次设置的底层、工作层和封孔固化层;所述封孔固化层采用专用耐高温材料、以液态混悬液进行涂刷并加热渗透和固化获得;所述工作层采用等离子喷涂混合陶瓷粉末的方式加工制备获得,所述陶瓷粉末的质量百分比成分包括0~50%的ZrO2-Y2O3、30%~50%的Al2O3,其余为SiO2;所述底层采用超音速喷涂的方式加工制备获得,所述底层材质采用MCrAlY。
较佳的,所述超音速喷涂打底层厚度设置为70μm~90μm,所述等离子喷涂工作层厚度设置为180μm~200μm,所述封孔固化层厚度设置为5μm~10μm。
较佳的,一种所述用于卧式连退炉的炉辊表面强化涂层的制备方法,包括步骤:
S1,辊坯制作:所述辊坯的辊面磨削至表面粗糙度Ra0.8;
S2,辊面检查;
S3,辊坯预热;
S4,喷砂:对辊坯进行喷砂毛化,至表面粗糙度到Ra7~8,获得所述炉辊基体;
S5,超音速喷涂所述底层;对辊面进行超音速喷涂,喷涂后表面粗糙度Ra6~7;
S6,等离子喷涂所述工作层;对辊面进行等离子喷涂,喷涂后表面粗糙度Ra6~7;
S7,抛磨:采用抛磨机器配金刚石砂带对炉辊进行抛磨,抛磨至炉辊半径方向减径15μm~25μm,表面粗糙度至Ra0.8;
S8,封孔处理形成所述封孔固化层;
S9,检测后完成炉辊的加工。
较佳的,在步骤S3中,将经步骤S2检查完毕后的所述辊坯进行预热,随炉升温至200℃,保温2h出炉,出炉检测辊面温度≥100℃。
较佳的,在步骤S4中,喷砂的加工参数为:喷砂压缩空气压力为2.5bar~3.5bar,喷嘴距离为370mm~400mm,所述炉辊基体转速为25rpm~30rpm,线速度为290m/sec~310m/sec,喷砂步距速度为9mm/Pitc~11mm/Pitch,喷砂遍数为2~3遍。
较佳的,在步骤S5中,超音速喷涂的加工参数为:所述炉辊基体转速为180rpm~200rpm,喷涂步距速度为4.0mm/Pitch~6.0mm/Pitch,表面线速度为1450mm/sec~1550mm/sec,煤油流量为191/h~211/h,氧气流量为860NLPM~890NLPM,载气流量为4.0NLPM~6.0NLPM,送粉速度为75g/min~85g/min,喷涂距离为330mm~350mm。
较佳的,在所述步骤S6中,等离子喷涂的加工参数为:氩气流量为39.0NLPM~42.0NLPM,氢气流量为13.0NLPM~15.0NLPM,载气流量为3.0NLPM~5.0NLPM,电流为550A~600A,功率为17.0KW~19.0KW,喷涂距离为110mm~130mm,转速为85rpm~95rpm,步距为3.0mm/pitch~5.0mm/pitch。
较佳的,在所述步骤S7中,抛磨机器的加工的参数为::0.5A~0.9A的驱动电流,频率设在35Hz~45Hz,砂带以0.8MPa压力贴触辊面,炉辊在机床上以30rpm~50rpm的转速旋转,抛磨机器前进速率为20mm/转~30mm/转。
较佳的,在所述步骤S8中,对辊面涂刷专用高温封孔剂,涂刷后炉辊进热处理炉随炉升温至500~550℃保温2h后,关闭炉子电源随炉冷却至室温。
较佳的,在所述步骤S9中,采用外径千分尺对辊径进行检测,采用表面粗糙度仪检测辊面粗糙度,对喷涂试块检测显微硬度来表征辊面最外层涂层的硬度。
与现有技术比较本发明的有益效果在于:本发明开创了高温合金MCrAlY打底+陶瓷涂层(三种陶瓷混合而成的粉)工作层方式对卧式连退炉炉辊表面进行表面强化,高温合金起到基体与陶瓷涂层的过渡作用,改善涂层结合性能,工作层的涂层主要是ZrO2-Y2O3+Al2O3+SiO2的氧化物陶瓷,由于这三种氧化物陶瓷有着良好的高温稳定性(1200℃的炉温下均保持特性不变),在卧式连退炉高温、复杂气氛和较差清洁度的工况下,氧化物陶瓷仍保持良好热力学和化学稳定性,始终不与带钢表面发生反应,另外在辊面涂刷硅酸锆系列耐高温封孔剂,进一步提升涂层高温稳定性、改善表面摩擦性能,从而消除了炉辊表面产生积瘤的因素点,提升了卧式连退炉炉辊表面性能。
附图说明
图1为所述用于卧式连退炉的炉辊表面强化涂层的结构示意图;
图2为所述用于卧式连退炉的炉辊表面强化涂层的金相视图;
图3为无所述用于卧式连退炉的炉辊表面强化涂层炉辊工作后的实物视图;
图4为具有所述用于卧式连退炉的炉辊表面强化涂层的炉辊工作后的实物视图;
图5为所述用于卧式连退炉的炉辊表面强化涂层的制备方法的流程图。
图中数字表示:
1-炉辊基体;2-底层;3-工作层;4-封孔固化层。
具体实施方式
以下结合附图,对本发明上述的和另外的技术特征和优点作更详细的说明。
实施例一
如图1和图2所示,图1为所述用于卧式连退炉的炉辊表面强化涂层的结构示意图;图2为所述用于卧式连退炉的炉辊表面强化涂层的金相视图;所述用于卧式连退炉的炉辊表面强化涂层包括由炉辊基体1向外依次设置的底层2、工作层3和封孔固化层4,一般的,所述超音速喷涂打底层2厚度设置为70μm~90μm,所述等离子喷涂工作层3厚度设置为180μm~200μm,所述封孔固化层4厚度设置为5μm~10μm。
较佳的,所述工作层3采用等离子喷涂混合陶瓷粉末的方式加工制备获得,所述陶瓷粉末的质量百分比成分包括0~50%的ZrO2-Y2O3、30%~50%的Al2O3,其余为SiO2。
较佳的,所述底层2采用超音速喷涂的方式加工制备获得,所述底层2材质采用MCrAlY。
如图3和图4所示,图3为无所述用于卧式连退炉的炉辊表面强化涂层炉辊工作后的实物视图;图4为具有所述用于卧式连退炉的炉辊表面强化涂层的炉辊工作后的实物视图。明显的,采用本发明所述用于卧式连退炉的炉辊表面强化涂层的炉辊使用效果良好,无积瘤产生。
本发明开创了高温合金MCrAlY打底+陶瓷涂层(三种陶瓷混合而成的粉)工作层3方式对卧式连退炉炉辊表面进行表面强化,高温合金起到基体与陶瓷涂层的过渡作用,改善涂层结合性能,工作层3的涂层主要是ZrO2-Y2O3+Al2O3+SiO2的氧化物陶瓷,由于这三种氧化物陶瓷有着良好的高温稳定性(1200℃的炉温下均保持特性不变),在卧式连退炉高温、复杂气氛和较差清洁度的工况下,氧化物陶瓷仍保持良好热力学和化学稳定性,始终不与带钢表面发生反应,另外在辊面涂刷硅酸锆系列耐高温封孔剂,进一步提升涂层高温稳定性、改善表面摩擦性能,从而消除了炉辊表面产生积瘤的因素点,提升了卧式连退炉炉辊表面性能。
实施例二
如图5所示,图5为所述用于卧式连退炉的炉辊表面强化涂层的制备方法的流程图;在本实施例中,针对直径小的Φ150辊身上制备所述用于卧式连退炉的炉辊表面强化涂层,本发明所述用于卧式连退炉的炉辊表面强化涂层的制备方法,包括步骤:
S1,辊坯制作:辊身采用离心铸造耐热合金,轴头采用锻件,然后组装焊接,车加工辊身和轴头至设计尺寸,再对整体辊面采用硬砂轮磨削至表面粗糙度Ra0.8;
S2,辊面检查:检查辊面有无针眼、缩孔、裂纹等缺陷,有缺陷的用等同辊身材质的焊材、利用氩弧焊进行点焊,点焊后进行修补抛磨;
S3,辊坯预热:将经步骤S2检查完毕后的所述辊坯进台车式加热炉预热,随炉升温至200℃,保温2h出炉,出炉检测辊面温度≥100℃;
S4,喷砂:辊坯上喷砂机床装夹,喷砂罐填装30#白刚玉砂,辊坯随工装进喷砂房喷砂毛化,至表面粗糙度到Ra7~8,获得所述炉辊基体1;
其中,喷砂压缩空气压力为2.5bar~3.5bar,喷嘴距离为370mm~400mm,所述炉辊基体1转速为25rpm~30rpm,线速度为290m/sec~310m/sec,喷砂步距速度为9mm/Pitc~11mm/Pitch,喷砂遍数为2~3遍。
S5,超音速喷涂所述底层2;
将所述炉辊基体1装夹至喷涂设备工装上,将烘干好的打底粉末(MCrAlY)装填进超音速喷涂设备粉斗,机械手安装超音速喷枪,按下表参数执行启动超音速火焰喷涂,每次喷涂两遍,间隔5min进行下一次喷涂,总共喷涂4次(4遍),每遍喷涂后需用刀片对辊面进行修刮、去除局部颗粒偏聚的高点,改善层与层之间的铺展结合质量,最终至喷涂层厚度70μm~90μm,喷涂后表面粗糙度Ra6~7;
其中,所述炉辊基体1转速为180rpm~200rpm,喷涂步距速度为4.0mm/Pitch~6.0mm/Pitch,表面线速度为1450mm/sec~1550mm/sec,煤油流量为191/h~211/h,氧气流量为860NLPM~890NLPM,载气流量为4.0NLPM~6.0NLPM,送粉速度为75g/min~85g/min,喷涂距离为330mm~350mm。
S6,等离子喷涂所述工作层3;
将超音速用粉斗更换为的等离子喷涂用粉斗,将烘干好的工作层3粉末装填进粉斗,机械手上超音速喷枪改装为等离子喷枪,接通相关气源(氢气、氩气),切换等离子喷涂界面,对辊面进行等离子喷涂,总共喷涂12次(12遍),等离子喷涂工作层3厚度控制在180μm~200μm,喷涂后表面粗糙度Ra6~7;
其中,氩气流量为39.0NLPM~42.0NLPM,氢气流量为13.0NLPM~15.0NLPM,载气流量为3.0NLPM~5.0NLPM,电流为550A~600A,功率为17.0KW~19.0KW,喷涂距离为110mm~130mm,转速为85rpm~95rpm,步距为3.0mm/pitch~5.0mm/pitch。
S7,抛磨:炉辊上机床,采用专用抛磨机器配金刚石砂带,抛磨机器设定参数:0.5A~0.9A的驱动电流,频率设在35Hz~45Hz,砂带以0.8MPa压力贴触辊面,炉辊在机床上以30rpm~50rpm的转速旋转,抛磨机器前进速率为20mm/转~30mm/转,均匀抛磨至炉辊半径方向减径15μm~25μm,表面粗糙度至Ra0.8,检查表面光亮平整、纹路均匀后抛磨结束;
S8,封孔处理:对辊面涂刷专用高温封孔剂(硅酸锆系),涂刷后炉辊进热处理炉加热保温(随炉升温至500~550℃保温2h),促使封孔材料渗入涂层孔隙内并固化,封堵住涂层孔隙,关闭炉子电源随炉冷却至室温出来,通过封孔处理可以提高辊面耐高温性同时改善辊面抗积瘤性。
S9,检测:采用外径千分尺对辊径进行检测,采用表面粗糙度仪检测辊面粗糙度,对喷涂试块检测显微硬度来表征辊面最外层涂层的硬度;
S10,合格成品,装配后上线使用。
以上所述仅为本发明的较佳实施例,对本发明而言仅仅是说明性的,而非限制性的。本专业技术人员理解,在本发明权利要求所限定的精神和范围内可对其进行许多改变,修改,甚至等效,但都将落入本发明的保护范围内。
Claims (10)
1.一种用于卧式连退炉的炉辊表面强化涂层,其特征在于,包括由炉辊基体向外依次设置的底层、工作层和封孔固化层;所述封孔固化层采用耐高温材料以液态混悬液进行涂刷并加热渗透固化获得;所述工作层采用等离子喷涂混合陶瓷粉末的方式加工制备获得,所述陶瓷粉末的质量百分比成分包括0~50%的ZrO2-Y2O3、30%~50%的Al2O3,其余为SiO2;所述底层采用超音速喷涂的方式加工制备获得,所述底层材质采用MCrAlY。
2.如权利要求1所述的用于卧式连退炉的炉辊表面强化涂层,其特征在于,所述超音速喷涂打底层厚度设置为70μm~90μm,所述等离子喷涂工作层厚度设置为180μm~200μm,所述封孔固化层厚度设置为5μm~10μm。
3.一种如权利要求1或2所述的用于卧式连退炉的炉辊表面强化涂层的制备方法,其特征在于,包括步骤:
S1,辊坯制作:所述辊坯的辊面磨削至表面粗糙度Ra0.8;
S2,辊面检查;
S3,辊坯预热;
S4,喷砂:对辊坯进行喷砂毛化,至表面粗糙度到Ra7~8,获得所述炉辊基体;
S5,超音速喷涂所述底层;对辊面进行超音速喷涂,喷涂后表面粗糙度Ra6~7;
S6,等离子喷涂所述工作层;对辊面进行等离子喷涂,喷涂后表面粗糙度Ra6~7;
S7,抛磨:采用抛磨机器配金刚石砂带对炉辊进行抛磨,抛磨至炉辊半径方向减径15μm~25μm,表面粗糙度至Ra0.8;
S8,封孔处理形成所述封孔固化层;
S9,检测后完成炉辊的加工。
4.如权利要求3所述的制备方法,其特征在于,在步骤S3中,将经步骤S2检查完毕后的所述辊坯进行预热,随炉升温至200℃,保温2h出炉,出炉检测辊面温度≥100℃。
5.如权利要求3所述的制备方法,其特征在于,在步骤S4中,喷砂的加工参数为:喷砂压缩空气压力为2.5bar~3.5bar,喷嘴距离为370mm~400mm,所述炉辊基体转速为25rpm~30rpm,线速度为290m/sec~310m/sec,喷砂步距速度为9mm/Pitc~11mm/Pitch,喷砂遍数为2~3遍。
6.如权利要求3所述的制备方法,其特征在于,在步骤S5中,超音速喷涂的加工参数为:所述炉辊基体转速为180rpm~200rpm,喷涂步距速度为4.0mm/Pitch~6.0mm/Pitch,表面线速度为1450mm/sec~1550mm/sec,煤油流量为191/h~211/h,氧气流量为860NLPM~890NLPM,载气流量为4.0NLPM~6.0NLPM,送粉速度为75g/min~85g/min,喷涂距离为330mm~350mm。
7.如权利要求3所述的制备方法,其特征在于,在所述步骤S6中,等离子喷涂的加工参数为:氩气流量为39.0NLPM~42.0NLPM,氢气流量为13.0NLPM~15.0NLPM,载气流量为3.0NLPM~5.0NLPM,电流为550A~600A,功率为17.0KW~19.0KW,喷涂距离为110mm~130mm,转速为85rpm~95rpm,步距为3.0mm/pitch~5.0mm/pitch。
8.如权利要求3所述的制备方法,其特征在于,在所述步骤S7中,抛磨机器的加工的参数为::0.5A~0.9A的驱动电流,频率设在35Hz~45Hz,砂带以0.8MPa压力贴触辊面,炉辊在机床上以30rpm~50rpm的转速旋转,抛磨机器前进速率为20mm/转~30mm/转。
9.如权利要求3所述的制备方法,其特征在于,在所述步骤S8中,对辊面涂刷专用高温封孔剂,涂刷后炉辊进热处理炉随炉升温至500℃~550℃保温2h后,关闭炉子电源随炉冷却至室温。
10.如权利要求3所述的制备方法,其特征在于,在所述步骤S9中,采用外径千分尺对辊径进行检测,采用表面粗糙度仪检测辊面粗糙度,对喷涂试块检测显微硬度来表征辊面最外层涂层的硬度。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011481777.6A CN112626440A (zh) | 2020-12-14 | 2020-12-14 | 一种用于卧式连退炉的炉辊表面强化涂层及制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011481777.6A CN112626440A (zh) | 2020-12-14 | 2020-12-14 | 一种用于卧式连退炉的炉辊表面强化涂层及制备方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN112626440A true CN112626440A (zh) | 2021-04-09 |
Family
ID=75313540
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202011481777.6A Pending CN112626440A (zh) | 2020-12-14 | 2020-12-14 | 一种用于卧式连退炉的炉辊表面强化涂层及制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112626440A (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113416909A (zh) * | 2021-05-07 | 2021-09-21 | 东华隆(广州)表面改质技术有限公司 | 一种金属板带压延辊的生产方法 |
CN115044762A (zh) * | 2022-08-17 | 2022-09-13 | 靖江市润新表面工程技术有限公司 | 硅钢炉辊及其加工方法 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2073169A (en) * | 1980-04-08 | 1981-10-14 | Vysoka Skola Chem Tech | Spraying Material for Hot and Plasma Spraying |
JPH073426A (ja) * | 1993-06-16 | 1995-01-06 | Nippon Steel Corp | 耐熱性溶射材料と溶射加工を行なった耐熱性部材 |
JPH073425A (ja) * | 1993-06-16 | 1995-01-06 | Nippon Steel Corp | 2融点系耐熱性溶射材料と溶射加工を行なった耐熱性部材 |
JP2000328212A (ja) * | 1999-05-17 | 2000-11-28 | Nippon Steel Corp | 連続溶融亜鉛めっき用の浸漬ロール |
CN102094164A (zh) * | 2009-12-15 | 2011-06-15 | 沈阳天贺新材料开发有限公司 | 一种纳米氧化锆热障涂层及制备方法 |
CN102650028A (zh) * | 2011-02-25 | 2012-08-29 | 宝山钢铁股份有限公司 | 一种防结瘤耐高温炉底辊涂层 |
CN103374693A (zh) * | 2012-04-27 | 2013-10-30 | 上海宝钢工业技术服务有限公司 | 高温炉辊表面的纳米热障涂层及制备方法 |
CN103757581A (zh) * | 2014-01-07 | 2014-04-30 | 马鞍山马钢表面工程技术有限公司 | 中高温炉辊表面超音速火焰喷涂方法 |
CN210856300U (zh) * | 2019-08-05 | 2020-06-26 | 安徽马钢表面技术股份有限公司 | 一种冷轧镀锌线稳定辊 |
-
2020
- 2020-12-14 CN CN202011481777.6A patent/CN112626440A/zh active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2073169A (en) * | 1980-04-08 | 1981-10-14 | Vysoka Skola Chem Tech | Spraying Material for Hot and Plasma Spraying |
JPH073426A (ja) * | 1993-06-16 | 1995-01-06 | Nippon Steel Corp | 耐熱性溶射材料と溶射加工を行なった耐熱性部材 |
JPH073425A (ja) * | 1993-06-16 | 1995-01-06 | Nippon Steel Corp | 2融点系耐熱性溶射材料と溶射加工を行なった耐熱性部材 |
JP2000328212A (ja) * | 1999-05-17 | 2000-11-28 | Nippon Steel Corp | 連続溶融亜鉛めっき用の浸漬ロール |
CN102094164A (zh) * | 2009-12-15 | 2011-06-15 | 沈阳天贺新材料开发有限公司 | 一种纳米氧化锆热障涂层及制备方法 |
CN102650028A (zh) * | 2011-02-25 | 2012-08-29 | 宝山钢铁股份有限公司 | 一种防结瘤耐高温炉底辊涂层 |
CN103374693A (zh) * | 2012-04-27 | 2013-10-30 | 上海宝钢工业技术服务有限公司 | 高温炉辊表面的纳米热障涂层及制备方法 |
CN103757581A (zh) * | 2014-01-07 | 2014-04-30 | 马鞍山马钢表面工程技术有限公司 | 中高温炉辊表面超音速火焰喷涂方法 |
CN210856300U (zh) * | 2019-08-05 | 2020-06-26 | 安徽马钢表面技术股份有限公司 | 一种冷轧镀锌线稳定辊 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113416909A (zh) * | 2021-05-07 | 2021-09-21 | 东华隆(广州)表面改质技术有限公司 | 一种金属板带压延辊的生产方法 |
CN115044762A (zh) * | 2022-08-17 | 2022-09-13 | 靖江市润新表面工程技术有限公司 | 硅钢炉辊及其加工方法 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Khan et al. | Effect of residual stresses on air plasma sprayed thermal barrier coatings | |
CN103374693B (zh) | 高温炉辊表面的纳米热障涂层及制备方法 | |
CN112626440A (zh) | 一种用于卧式连退炉的炉辊表面强化涂层及制备方法 | |
CN111455306A (zh) | 一种金属硬密封球阀镍基碳化钨耐磨涂层的制造工艺 | |
CN106367707A (zh) | 一种超音速喷涂WC‑12Co涂层的激光重熔方法 | |
CN109266997A (zh) | 一种适用于高温环境的金属工件双层涂层及其制作方法 | |
Fauchais et al. | Industrial applications of thermal spraying technology | |
CN106835112A (zh) | 一种镁合金表面冷喷涂420不锈钢复合涂层的制备方法 | |
JP2009536984A (ja) | セラミックコーティングを得る方法および得られたセラミックコーティング | |
CN101240408A (zh) | 炉辊及其制造方法 | |
CN107988574A (zh) | 一种具有耐磨损耐龟裂纳米涂层的冷轧酸轧机拉矫辊 | |
CN113151772A (zh) | 一种新型高温耐蚀的双陶瓷层结构热障涂层及其制备方法 | |
CN108486565A (zh) | 一种低压冷喷涂铜基自润滑涂层及其制备方法 | |
CN110643926A (zh) | 一种连续退火炉高温炉辊ZrB2改性CoCrAlTaY-Y2O3防护涂层及制备方法 | |
CN110079799A (zh) | 一种轴类工件表面梯度耐磨涂层的制备方法 | |
CN110923610B (zh) | 等离子喷涂用钴基合金复合粉末及熔覆涂层的制备方法 | |
CN105385978A (zh) | 一种电弧喷涂方法 | |
CN101705842B (zh) | 一种燃气轮机旁通可变机构内侧环、外侧环表面耐磨层及其制备方法 | |
CN206033854U (zh) | 一种层流等离子钢轨表面处理装置 | |
CN106637040A (zh) | 一种利用层流等离子进行钢轨表面处理的方法 | |
CN106637039A (zh) | 一种利用层流等离子的钢轨表面处理系统 | |
JP2023510510A (ja) | 炭化タングステン合金コーティングを伴う圧延機のロールを得る方法、及び得られたロール | |
CN114318203A (zh) | 耐高温抗积瘤复合梯度涂层及其制备方法 | |
JPH0243352A (ja) | 溶融金属浴用部材の製造方法 | |
CN1172172A (zh) | 硅钢连续退火炉陶瓷复合涂层炉底辊 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210409 |