WO2020143272A1 - 一种冷轧炉辊涂层翻新处理方法 - Google Patents

一种冷轧炉辊涂层翻新处理方法 Download PDF

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WO2020143272A1
WO2020143272A1 PCT/CN2019/112826 CN2019112826W WO2020143272A1 WO 2020143272 A1 WO2020143272 A1 WO 2020143272A1 CN 2019112826 W CN2019112826 W CN 2019112826W WO 2020143272 A1 WO2020143272 A1 WO 2020143272A1
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roller
coating
polishing
cold
roller surface
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PCT/CN2019/112826
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English (en)
French (fr)
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解明祥
胡小红
倪振航
刘刚
宋家福
程大卫
郭亚东
赵慧颖
鲁俊豪
林章敏
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安徽马钢表面技术股份有限公司
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Publication of WO2020143272A1 publication Critical patent/WO2020143272A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/16—Machines or devices using grinding or polishing belts; Accessories therefor for grinding other surfaces of particular shape

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  • the invention relates to a method for repairing a cold rolling roll with a coating, in particular to a method for refurbishing the coating of a cold rolling furnace roll.
  • the continuous retreat line and the galvanizing line of the cold rolling mill are equipped with a continuous heat treatment furnace.
  • the furnace roller is the core component in the furnace, which plays the role of transmission, tension and guidance.
  • the furnace roller directly contacts the surface of the cold-rolled sheet and is not coated in the initial stage.
  • the oxides remaining on the surface of the steel strip are reduced to elements such as Fe and Mn in the furnace atmosphere.
  • These elements are (Hot stainless steel) has strong affinity and miscibility. It easily reacts with the furnace roller to form a build-up, which adheres to the surface of the furnace roller and is difficult to remove.
  • the production site is mostly inspected by the furnace roll by shutting down the furnace regularly.
  • the furnace rolls with serious accumulation or severe reduction in roughness will be replaced off-line to ensure the production quality of the plate.
  • the coating is used to restore the effect of the furnace roll, but this method is costly and the repair period is long.
  • the buildup on the surface of the coating is mostly within the surface layer 0.2*x (x is the thickness of the coating), and after removing the buildup The remaining 0.8x thickness of the coating can still be used. Stripping and preparing the coating in order to eliminate the buildup will cause a large amount of waste of valuable materials and incur more intermediate process costs, which is not a very cost-effective treatment method.
  • the technical problem to be solved by the present invention is that the coating refurbishment process can be realized quickly and effectively, and a cold rolling furnace roll refurbishment treatment method is provided.
  • the present invention solves the above technical problems through the following technical solutions.
  • the present invention includes the following steps:
  • the polishing disc drives the polishing disc to rotate, and the contact area between the polishing disc and the roller surface is 60 to 70%. It is manually pressed against the roller surface in a spiral stacking mode. Rotate and polish to remove the raised points and sharp points of the surface area tumor, until there is no obvious unevenness in the touch;
  • the driving current of the polishing machine is 0.5 to 1.0A
  • the frequency is 40 to 50Hz
  • the abrasive belt is assembled on the polishing machine 1.0MPa pressure touches the surface of the roller, the roller rotates at a speed of 60-80rpm on the machine tool, and the forward speed of the polishing machine is 30-40mm/rev.
  • the roller surface is evenly polished 3 to 5 times to clean the entire area of the roller to the entire roller
  • the surface is smooth and flat;
  • the spray gun is 300mm away from the roller surface, 80-120 mesh white corundum sand is filled in the sandblasting tank, the air pressure of the sandblasting equipment is set at 2.5MPa pressure, and the roller speed is 6-8rpm, start The equipment performs sand blasting on the entire roller surface in a rotating stepping manner to completely remove the buildup mark and restore the appearance of the fresh coating. After that, the roller surface is further blasted again to restore the required roughness of the roller surface;
  • the roller surface is cleaned with a cleaning agent, the roller body and the surface coating condition are checked, and then all the accumulated points and accumulated areas of the roller surface are marked with dust-free. It can ensure that each defect location is repaired.
  • the rotation speed of the grinding disc is 500-700 rpm, and the rotation speed of the roller is 50-60 rpm.
  • Reasonable control of rotation speed can effectively remove accumulated tumors.
  • the advancing speed of the spiral stacking is 30 mm/revolution, and the width of each revolution overlaps 40-50%. Controlling the speed and lap can improve the polishing effect.
  • the polishing disc for manual polishing is disc-shaped, and a plurality of cylindrical diamond particles are provided on the polishing disc.
  • the polishing disc is fixed on the back by bonding.
  • the diamond particles are evenly mounted on the surface of the polishing disc in a cylindrical shape. There are about hundreds of small cylinders distributed on the entire surface.
  • the abrasive belt for the polishing machine is a strip-shaped belt, and there are a plurality of strip-shaped diamond particles on the abrasive belt, and the strip-shaped diamond particles are consistent with the length direction of the abrasive belt.
  • the difference between the abrasive belt for manual polishing and polishing machine one is disc-shaped, the surface of the diamond particles is cylindrical, and the rotating polishing disk fits the roller surface, and the diamond particles rotate to remove the high point of the accumulated tumor, which is left for rough grinding and roller surface.
  • the advancing rate of the rotary step is 0.9-1.5 mm/s.
  • the present invention has the following advantages: Compared with the conventional decoating and re-preparation scheme, the present invention is a fast, convenient, cost-effective new idea and new method, which can greatly reduce valuable coating materials Waste, in terms of production cycle, the coating refurbishment processing time is 1 day, and the decoating re-preparation time is 9-10 days, which can effectively shorten the on-site repair and roll replacement cycle and improve production efficiency; in terms of cost, the present invention The cost is only 0.2 times of the preparation of the coating, and the economic benefits are significant.
  • Figure 1 is a schematic diagram of the entire renovation process
  • FIG. 2 is a flowchart of the present invention
  • Figure 3 is a partial schematic view of a polishing disc for manual polishing
  • FIG. 4 is a partial schematic view of the abrasive belt for polishing machine
  • FIG. 5 is a schematic diagram of the cold rolling furnace roll accretion of the present invention before removal
  • FIG. 6 is a schematic view of the cold rolling furnace roll refurbishment treatment of the present invention.
  • the furnace roller is clamped on the machine tool, and the manual polishing disc is used for polishing.
  • the abrasive tool drives the polishing disc to rotate at a speed of about 600 rpm. It contacts the roller surface with a certain pressure.
  • the roller speed is set to 50 to 60 rpm.
  • the polishing disc 2 and the roller surface The contact area reaches 60-70%, in a spiral stacking mode, the advancing rate is 30mm/rev, and the width of each revolution overlaps 40-50%. It is manually pressed against the roller surface, and the surface is polished to remove the raised points and sharp points of the surface area. Until there is no obvious unevenness in touch; as shown in FIG.
  • the polishing disc 2 for manual polishing is disc-shaped, and a plurality of cylindrical diamond particles are arranged on the polishing disc 2.
  • the polishing disc 2 is fixed on the back side, and the diamond particles are evenly mounted on the surface of the polishing disc in a cylindrical shape. There are hundreds of small cylinders distributed on the entire surface;
  • the machine tool on the roller, the abrasive belt is clamped to the polishing machine for the machine tool, the polishing machine setting parameters: 0.5 ⁇ 1.0A drive current, the frequency is set at 40 ⁇ 50Hz, the polishing machine is equipped with a special abrasive belt with 1.0 MPa pressure touches the surface of the roller, the roller rotates at a speed of 60-80 rpm on the machine tool, and the forward speed of the polishing machine is 30-40 mm/rev.
  • the roller surface is evenly polished 3 to 5 times to clean the entire area of the roller to the surface of the roller Smooth and flat; as shown in Fig.
  • the abrasive belt 3 for polishing machine is a strip-shaped belt, and there are a plurality of strip-shaped diamond particles on the abrasive belt 3, the strip-shaped diamond particles are consistent with the length direction of the abrasive belt 3 .
  • the difference between the manual polishing disc 2 and the abrasive belt 3 for polishing machine one is a disc shape, the surface of the diamond particles is cylindrical, the rotating polishing disc 2 is fitted to the roller surface, and the diamond particles rotate to remove the high point of the accumulated tumor.
  • the surface of the roller will leave a spiral scratch mark; the abrasive belt 3 is strip-shaped, and the diamond particles are short strip-shaped.
  • the abrasive tool is started, the abrasive belt 3 and the roller surface are reversely reversed, and the cut surface fits the roller surface to further remove the accumulated tumor, which is relatively thin
  • the surface of the roller is light and uniform.
  • the rollers are clamped and fixed into the blasting equipment, adjust the vertical roller surface of the blast gun, and the distance between the blast gun and the roller surface is 300mm.
  • the blasting tank is filled with 80-120 mesh white corundum sand.
  • the air pressure of the blasting equipment is set to 2.5MPa and the roller speed is 6-8rpm , Start the device to blast the entire roller surface in a rotating stepping manner, the advance rate is 0.9 ⁇ 1.5mm/s, completely remove the buildup mark, restore the appearance of the fresh coating, and then blast the roller surface again. Restore the required roughness of the roll surface;
  • the residual sand on the roller surface is purged and cleaned.
  • the roller is clamped and fixed by the grinder.
  • the grinder is clamped by the scouring wheel.
  • the polishing wheel is tangentially squeezed against the roller surface.
  • the roller speed is set to 40-50 rpm. Polishing The wheel advancing speed is set to 300mm/min, so that the roller surface of the furnace roller is finely polished 4 to 6 times, so that the surface texture of the roller is uniform;
  • the bulging points and sharp points of the furnace roll surface area can be effectively cleaned; the sheet accumulating areas on the surface of the furnace roll are removed; the fresh appearance of the coating is restored; and the initial roughness of the roll surface is restored.
  • the coating exposed a fresh and usable surface, the initial roughness requirements were restored, and the surface of the furnace roll was restored to a clean, smooth and uniform good condition.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

一种冷轧炉辊涂层翻新处理方法，标记出辊面积瘤区域及其他缺陷位置；手动抛磨去除积瘤凸起点、尖点；使用抛磨机器进行整辊面抛磨处理，扫清表面的积瘤点（1）；喷砂清理积瘤印迹、调整表面粗糙度；磨床精抛处理达到成品粗糙度。与常规的去涂层再制备方案相比，该方法是一种快捷方便、经济有效的新思路、新方法，其可以很大程度减少贵重涂层材料浪费，在生产周期方面，涂层翻新处理时间为1天，而去涂层重新制备的时间为9～10天，能够有效缩短现场检修换辊周期、提高生产效率；在费用方面，所需费用仅为重新制备涂层的0.2倍，经济效益显著。

Description

一种冷轧炉辊涂层翻新处理方法 技术领域
本发明涉及一种带有涂层的冷轧辊修复方法，尤其涉及的是一种冷轧炉辊涂层翻新处理方法。
背景技术
冷轧厂的连退线和镀锌线均配置了连续热处理炉，炉辊是炉内的核心部件，起传输、张紧及导向作用，炉辊直接与冷轧薄板表面接触，在初期没有涂层保护的情况下，由于炉辊退火炉内还原性的氮氢保护气体，使得钢带表面残留的氧化物在炉内气氛下被还原成Fe、Mn等元素，这些元素与炉辊材料(耐热不锈钢)具有很强的亲和性、互溶性，易与炉辊发生化学反应形成积瘤，粘附在炉辊表面、难以去除。
随着技术的发展，应用表面工程技术对炉辊表面进行防护成为一种广泛现象，根据不同位置、不同温度，为满足相应的使用要求，制备相应性能的涂层，如低温段的超音速喷涂涂层，中高温段的等离子或爆炸喷涂涂层，这些涂层主要起到相应的耐磨、热障屏蔽和辊面保护作用，较大程度提升了炉辊辊面抗积瘤性能，为板带产品质量的改善起到了至关重要的作用。但是即使有涂层的屏障保护作用，在钢带表面残留物、钢带反复接触和炉内温度气氛条件等情况综合作用下，涂层表面依旧会产生类似麻点、轻微凸起等形式的积瘤点，这些点状凸起积瘤一旦形成粘附在涂层表面，很难自行脱离且会逐渐增大，这对板带表面质量有着严重的负面影响，是必须严格控制的。另外，随着炉辊服役时间的延长、钢带的长期接触，涂层表面粗糙度逐渐降低，部分炉辊表面粗糙度下降较大、变得过于光滑，在运作过程中会产生“打滑”现象，不利于钢带传输，也是需要避免的。
为了避免辊面积瘤对钢带产生的不利影响，减少炉辊表面粗糙度明显下降带来的钢带“打滑”现象，根据要求，生产现场多是通过定期停炉检修，逐一检查各炉辊表面情况，对积瘤严重或粗糙度下降较大的炉辊进行下线更换，以此来保证板材生产质量，而下线后的炉辊，常规工艺方法是去除辊面不可用涂层后重新制备涂层，以此来恢复炉辊使用效果，但此方法成本高昂、修复周期长，且涂层表面的积瘤多是在表层0.2*x(x为涂层厚度)内，而且去除积瘤后剩余的0.8x厚度涂层仍可使用，为消除积瘤而剥离再制备涂层会造成大量贵重材料的浪费，以及产生较多的中间工序费用，并不是一种十分经济有效的处理方式。
发明内容
本发明所要解决的技术问题在于：能够快速有效的实现涂层翻新处理，提供了一种冷轧炉辊涂层翻新处理方法。
本发明是通过以下技术方案解决上述技术问题的，本发明包括以下步骤：
(1)标记出辊面积瘤区域及其他缺陷位置；
(2)手动抛磨去除积瘤凸起点、尖点：通过磨具带动抛磨盘转动，抛磨盘与辊面接触面积为60～70％，以螺旋叠进方式，手动贴压在辊面上，旋转抛磨去除表面积瘤凸起点、尖点，至触摸无明显凹凸感即可；
(3)使用抛磨机器进行整辊面抛磨处理，扫清表面的积瘤点：抛磨机器的驱动电流为0.5～1.0A，频率为40～50Hz，在抛磨机器上装配砂带以1.0MPa压力贴触辊面，辊子在机床上以60～80rpm的转速旋转，抛磨机器前进速率为30～40mm/转，均匀抛磨辊面3～5遍，清理整辊面积瘤至整辊面光滑、平整；
(4)喷砂清理积瘤印迹、调整表面粗糙度：喷枪距离辊面300mm，喷砂罐内装入80～120目白刚玉砂，设置喷砂设备空气压力2.5MPa压力、辊子转速6～8rpm，启动设备以旋转步进式对整辊面进行喷砂处理，彻底清除积瘤印记、恢复新鲜涂层外表，之后再对辊面进一步喷砂一遍，恢复辊面要求的粗糙度；
(5)磨床精抛处理达到成品粗糙度：喷砂完毕后，吹扫、清净辊面残余砂粒，辊子上磨床装夹固定，磨床装夹百洁抛光轮，抛光轮切线挤压贴合辊面，辊子转速设为40～50rpm，抛光轮前进速率设为300mm/min，以此对炉辊辊面进行4～6遍精细抛磨，使得辊面纹路均匀一致。
所述步骤(1)中，用清洗剂清洗辊面，检查辊身和表面涂层情况，然后用无尘分别标记辊面的所有积瘤点、积瘤区域。可以确保对每个缺陷位置实现修复。
所述步骤(2)中，磨盘转速500～700rpm，辊子转速为50～60rpm。合理控制转速，能够有效的去除积瘤。
所述螺旋叠进的前进速率为30mm/转，每转宽度搭接40～50％。控制速度和搭接，能够提高抛磨效果。
所述步骤(2)中，手动抛磨用抛磨盘为圆盘状，所述抛磨盘上设置多个圆柱状的金刚石颗粒。抛磨盘固定方式采用背面粘结式，结构上采用金刚石颗粒以圆柱状均匀镶嵌在抛磨盘表面，整面上约分布有上百个小圆柱。
所述步骤(3)中，抛磨机器用砂带为条形带，所述砂带上有多个条形金刚石颗粒，所述条形金刚石颗粒与砂带的长度方向一致。
手动抛磨盘和抛磨机器用砂带的不同：一个是圆盘状，表面金刚石颗粒呈圆柱状，旋转抛磨盘贴合辊面，金刚石颗粒转动去除积瘤高点，为粗磨、辊面会留下螺旋划痕印迹；砂带是条状，金刚石颗粒呈短条状，磨具启动后砂带与辊面反向逆转，切面贴合辊面进一步清除 积瘤，相对为细磨，辊面印迹很淡且均匀。
所述步骤(4)中，旋转步进的前进速率为0.9～1.5mm/s。
本发明相比现有技术具有以下优点：本发明与常规的去涂层再制备方案相比，是一种快捷方便、经济有效的新思路、新方法，其可以很大程度减少贵重涂层材料浪费，在生产周期方面，涂层翻新处理时间为1天，而去涂层重新制备的时间为9～10天，能够有效缩短现场检修换辊周期、提高生产效率；在费用方面，本发明所需费用仅为重新制备涂层的0.2倍，经济效益显著。
附图说明
图1是整个翻新工艺的原理图；
图2是本发明的流程图；
图3是手动抛磨用抛磨盘的局部示意图；
图4是抛磨机器用砂带的局部示意图；
图5是本发明的冷轧炉辊积瘤去除前的示意图；
图6是本发明的冷轧炉辊翻新处理后的示意图。
具体实施方式
下面对本发明的实施例作详细说明，本实施例在以本发明技术方案为前提下进行实施，给出了详细的实施方式和具体的操作过程，但本发明的保护范围不限于下述的实施例。
如图1和图2所示，本实施例的具体实施步骤如下：
1、利用清洗剂清洗整个辊面，检查辊身和表面涂层状况；
2、用无尘粉笔标记处辊面所有积瘤点、积瘤区域；
3、炉辊装夹在机床上，采用手工抛磨盘进行抛磨，磨具带动抛磨盘转动，转速约600rpm，以一定压力接触辊面，辊子转速设为50～60rpm，抛磨盘2与辊面接触面积达60～70％，以螺旋叠进方式，前进速率为30mm/转、每转宽度搭接40～50％，手动贴压在辊面上，旋转抛磨去除表面积瘤凸起点、尖点，至触摸无明显凹凸感；如图3所示，手动抛磨用抛磨盘2为圆盘状，所述抛磨盘2上设置多个圆柱状的金刚石颗粒。抛磨盘2固定方式采用背面粘结式，结构上采用金刚石颗粒以圆柱状均匀镶嵌在抛磨盘表面，整面上约分布有上百个小圆柱；
4、辊子上机床，将砂带装夹到机床用抛磨机器上，抛磨机器设定参数：0.5～1.0A驱动电流，频率设在40～50Hz，抛磨机器上装配专用砂带以1.0MPa压力贴触辊面，辊子在机床上以60～80rpm的转速旋转，抛磨机器前进速率为30～40mm/转，均匀抛磨辊面3～5遍，清理整辊面积瘤至整辊面光滑、平整；如图4所示，抛磨机器用砂带3为条形带，所述砂带3上有多个条形金刚石颗粒，所述条形金刚石颗粒与砂带3的长度方向一致。
手动抛磨盘2和抛磨机器用砂带3的不同：一个是圆盘状，表面金刚石颗粒呈圆柱状，旋转抛磨盘2贴合辊面，金刚石颗粒转动去除积瘤高点，为粗磨、辊面会留下螺旋划痕印迹；砂带3是条状，金刚石颗粒呈短条状，磨具启动后砂带3与辊面反向逆转，切面贴合辊面进一步清除积瘤，相对为细磨，辊面印迹很淡且均匀。
5、全面检查辊面情况，若仍有明显或残余积瘤点，则重复上述3和4步骤，直至辊面的积瘤凸起点全部消失；
6、辊子进喷砂设备装夹固定，调整喷枪垂直辊面、喷枪距离辊面300mm，喷砂罐内装入80～120目白刚玉砂，设置喷砂设备空气压力2.5MPa压力、辊子转速6～8rpm，启动设备以旋转步进式对整辊面进行喷砂处理一遍，前进速率为0.9～1.5mm/s，彻底清除积瘤印记、恢复新鲜涂层外表，之后再对辊面进一步喷砂一遍，恢复辊面要求的粗糙度；
7、喷砂完毕后，吹扫、清净辊面残余砂粒，辊子上磨床装夹固定，磨床装夹百洁抛光轮，抛光轮切线挤压贴合辊面，辊子转速设为40～50rpm，抛光轮前进速率设为300mm/min，以此对炉辊辊面进行4～6遍精细抛磨，使得辊面纹路均匀一致；
8、利用放大镜和粗糙度仪整辊面检查积瘤情况和表面粗糙度，如有残留积瘤点或粗糙度不达标的，返回前道工序再处理，最终达到合格要求。
实际上去除图1中的积瘤点1后，涂层厚度由原来的x变为0.8x，尽可能的保留了涂层的厚度和功能。
使用本实施例的方法进行炉辊翻新，炉辊表面积瘤凸起点、尖点可得到有效清理；去除炉辊表面片状积瘤区域；恢复涂层新鲜外表；恢复辊面初始粗糙度。
如图5和图6所示，经过涂层翻新处理后，涂层露出新鲜可使用表面，恢复了初始粗糙度要求，炉辊表面恢复了清洁、光整、均匀的良好状况。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (7)

  1. 一种冷轧炉辊涂层翻新处理方法，其特征在于，包括以下步骤：
    (1)标记出辊面积瘤区域及其他缺陷位置；
    (2)手动抛磨去除积瘤凸起点、尖点：通过磨具带动抛磨盘转动，抛磨盘与辊面接触面积为60～70％，以螺旋叠进方式，手动贴压在辊面上，旋转抛磨去除表面积瘤凸起点、尖点，至触摸无明显凹凸感即可；
    (3)使用抛磨机器进行整辊面抛磨处理，扫清表面的积瘤点：抛磨机器的驱动电流为0.5～1.0A，频率为40～50Hz，在抛磨机器上装配砂带以1.0MPa压力贴触辊面，辊子在机床上以60～80rpm的转速旋转，抛磨机器前进速率为30～40mm/转，均匀抛磨辊面3～5遍，清理整辊面积瘤至整辊面光滑、平整；
    (4)喷砂清理积瘤印迹、调整表面粗糙度：喷枪距离辊面300mm，喷砂罐内装入80～120目白刚玉砂，设置喷砂设备空气压力2.5MPa压力、辊子转速6～8rpm，启动设备以旋转步进式对整辊面进行喷砂处理，彻底清除积瘤印记、恢复新鲜涂层外表，之后再对辊面进一步喷砂一遍，恢复辊面要求的粗糙度；
    (5)磨床精抛处理达到成品粗糙度：喷砂完毕后，吹扫、清净辊面残余砂粒，辊子上磨床装夹固定，磨床装夹百洁抛光轮，抛光轮切线挤压贴合辊面，辊子转速设为40～50rpm，抛光轮前进速率设为300mm/min，以此对炉辊辊面进行4～6遍精细抛磨，使得辊面纹路均匀一致。
  2. 根据权利要求1所述的一种冷轧炉辊涂层翻新处理方法，其特征在于，所述步骤(1)中，用清洗剂清洗辊面，检查辊身和表面涂层情况，然后用无尘分别标记辊面的所有积瘤点、积瘤区域。
  3. 根据权利要求1所述的一种冷轧炉辊涂层翻新处理方法，其特征在于，所述步骤(2)中，磨盘转速500～700rpm，辊子转速为50～60rpm。
  4. 根据权利要求3所述的一种冷轧炉辊涂层翻新处理方法，其特征在于，所述螺旋叠进的前进速率为30mm/转，每转宽度搭接40～50％。
  5. 根据权利要求1所述的一种冷轧炉辊涂层翻新处理方法，其特征在于，所述步骤(2)中，手动抛磨用抛磨盘为圆盘状，所述抛磨盘上设置多个圆柱状的金刚石颗粒。
  6. 根据权利要求1所述的一种冷轧炉辊涂层翻新处理方法，其特征在于，所述步骤(3)中，抛磨机器用砂带为条形带，所述砂带上有多个条形金刚石颗粒，所述条形金刚石颗粒与砂带的长度方向一致。
  7. 根据权利要求1所述的一种冷轧炉辊涂层翻新处理方法，其特征在于，所述步骤(4)中，旋转步进的前进速率为0.9～1.5mm/s。
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