WO2020135866A1 - 一种导向辊及其生产方法 - Google Patents

一种导向辊及其生产方法 Download PDF

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Publication number
WO2020135866A1
WO2020135866A1 PCT/CN2019/129883 CN2019129883W WO2020135866A1 WO 2020135866 A1 WO2020135866 A1 WO 2020135866A1 CN 2019129883 W CN2019129883 W CN 2019129883W WO 2020135866 A1 WO2020135866 A1 WO 2020135866A1
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guide roller
roller body
ceramic film
coated
film layer
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PCT/CN2019/129883
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English (en)
French (fr)
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郭辰翔
杨飞
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陕西北人印刷机械有限责任公司
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Publication of WO2020135866A1 publication Critical patent/WO2020135866A1/zh

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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
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/026—Anodisation with spark discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/20—Delivering or advancing articles from machines; Advancing articles to or into piles by contact with rotating friction members, e.g. rollers, brushes, or cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used

Definitions

  • the present application belongs to the technical field of printing devices, and relates to a guide roller, particularly a guide roller on a printing machine.
  • the application also relates to a production method of the guide roller.
  • the guide roller is widely used in various printing machines. It is a key component of the printing machine.
  • the surface of the traditional anodized guide roller has uneven colors, poor corrosion resistance and wear resistance; while the hard oxide guide roller is due to aluminum profiles.
  • the problem of the density change of the material at the ribs leads to the problem of uneven color, black lines and high points on the surface of the roller body after oxidation.
  • the purpose of this application is to provide a guide roller with high surface hardness and good heat resistance, abrasion resistance, corrosion resistance and insulation.
  • the application also discloses the production method of the guide roller.
  • the first technical solution adopted in this application is a guide roller including a guide roller body, and a ceramic film layer is coated on the outer wall of the guide roller body.
  • the thickness of the ceramic membrane layer 2 is 0.015-0.02 mm.
  • Step 1 Clean the guide roller body and hang it on the hanger
  • Step 2 Put the hanger equipped with the guide roller body into the electrolytic cell and micro-arc oxidation to obtain the guide roller body plated with ceramic film;
  • Step 3 After washing the guide roller body coated with the ceramic film, it is placed in a closed tank for sealing;
  • Step 4 After the closed guide roller body coated with the ceramic film is washed with water, it is placed in an air-drying tank for hot air drying to obtain a guide roller.
  • the electrolyte is a mixed solution composed of K 2 SiO 3 , Na 2 O 2 , NaF, CH 3 COONa and Na 2 VO 3 , and the pH of the mixed solution is 9-12.
  • the concentration of K 2 SiO 3 in the mixed solution is 8 to 12 g/L
  • the concentration of Na 2 O 2 in the mixed solution is 2 to 3 g/L
  • the concentration of NaF in the mixed solution is 0.5 to 1 g/L
  • the concentration of CH 3 COONa in the mixed solution is 1 to 2 g/L
  • the concentration of Na 2 VO 3 in the mixed solution is 1 to 3 g/L.
  • Step 2 The voltage during micro-arc oxidation is 380v, the current density is 1.0A/dm 2 to 2A/dm 2 , the time for micro-arc oxidation is 20min to 30min, and the temperature for micro-arc oxidation is 10°C to 25°C.
  • step 3 the guide roller body 1 coated with the ceramic film layer is sealed with a silicate solution with a mass concentration of 10 to 15 g/L.
  • the sealing temperature is 15° C. to 25° C., and the sealing time is 15 min to 20 min.
  • This application is a guide roller with high surface hardness and good heat resistance, wear resistance, corrosion resistance and insulation; the production method of the guide roller of this application is stable and reliable, energy saving and environmental protection, suitable for batch produce.
  • FIG. 1 is a schematic structural diagram of a guide roller of the present application.
  • a guide roller as shown in FIG. 1, includes a guide roller body 1, and a ceramic film layer 2 with a thickness of 0.015 mm to 0.02 mm is plated on the outer wall of the guide roller body 1.
  • a ceramic film layer is coated on the guide roller body 1 by a micro-arc oxidation method, which can greatly improve the surface hardness of the guide roller on the printing press, and at the same time, can make the guide roller have a good Wear resistance, heat resistance, corrosion resistance and insulation; at the same time, the thickness of the ceramic film layer on the guide roller of the present application is 0.015mm to 0.02mm, which can make the guide roller have weak insulation performance while having weak
  • the conductive property enables part of the static electricity generated during the operation of the guide roller to be led out by the ceramic film layer 2, thereby reducing the static electricity of the guide roller and improving the quality of the printed matter.
  • a production method of guide rollers specifically according to the following steps:
  • Step 1 The guide roller body 1 is cleaned with clean water and detergent, and then hung on the hanger;
  • Step 2 Put the hanger equipped with the guide roller body 1 into the electrolytic cell.
  • the electrolytic solution in the electrolytic cell is 8 ⁇ 12g/L K 2 SiO 3 , 2 ⁇ 3g/L Na 2 O 2 , 0.5 ⁇ 1g /L NaF, 1 ⁇ 2g/L CH 3 COONa and 1 ⁇ 3g/L Na 2 VO 3 mixed solution;
  • Step 3 after washing the guide roller body 1 coated with the ceramic film layer 2 in water, put it into a closed tank, use a silicate solution with a mass concentration of 10 to 15 g/L, and seal at a temperature of 15 to 25 °C for 15 min. 20min;
  • Step 4 After the closed guide roller body 1 coated with the ceramic film is washed with water, it is placed in an air-drying tank for hot air drying to obtain a guide roller.
  • a method for producing a guide roller of the present application after the guide roller body 1 coated with the ceramic film layer 2 is sealed with an organic silicon solution, the pores of the oxide film layer can be filled, and the surface corrosion resistance of the film layer is improved At the same time, the surface is also easy to clean; at the same time, the closed guide roller body 1 coated with the ceramic film layer 2 of this application is dried with hot air in the tank, which can reduce the water stains generated on the surface, make the oxide film layer clean, and not easily contaminated with oil, etc., It also has a certain filling effect.
  • a production method of guide rollers specifically according to the following steps:
  • Step 1 Clean the guide roller body 1 and hang it on the hanger
  • Step 2 Put the hanger equipped with the guide roller body 1 into the electrolytic cell.
  • the electrolyte in the electrolytic cell is 8 g/L K 2 SiO 3 , 2 g/L Na 2 O 2 , 0.5 g/L NaF, 1g/L CH 3 COONa and 1g/L Na 2 VO 3 mixed solution;
  • the micro-arc oxidation was performed for 20 minutes to obtain a guide roller body 1 coated with a ceramic film;
  • Step 3 after washing the guide roller body 1 coated with the ceramic film layer 2 in water, put it into a closed tank, use a silicate solution with a mass concentration of 10g/L, and seal at a temperature of 15°C for 15 minutes;
  • Step 4 After the closed guide roller body 1 coated with the ceramic film is washed with water, it is placed in an air-drying tank for hot air drying to obtain a guide roller.
  • a production method of guide rollers specifically according to the following steps:
  • Step 1 Clean the guide roller body 1 and hang it on the hanger
  • Step 2 Put the hanger equipped with the guide roller body 1 into the electrolytic cell.
  • the electrolytic solution in the electrolytic cell is 12 g/L K 2 SiO 3 , 3 g/L Na 2 O 2 , and 0.5-1 g/L NaF , 2g/L CH 3 COONa and 3g/L Na 2 VO 3 mixed solution;
  • the micro-arc oxidation is performed for 20-30 minutes to obtain a guide roller body 1 coated with a ceramic film;
  • Step 3 after washing the guide roller body 1 coated with the ceramic film layer 2 in water, put it into a closed tank, use a silicate solution with a mass concentration of 15g/L, and seal at a temperature of 25°C for 20 minutes;
  • Step 4 After the closed guide roller body 1 coated with the ceramic film is washed with water, it is placed in an air-drying tank for hot air drying to obtain a guide roller.
  • a production method of guide rollers specifically according to the following steps:
  • Step 1 Clean the guide roller body 1 and hang it on the hanger
  • Step 2 Put the hanger equipped with the guide roller body 1 into the electrolytic cell.
  • the electrolyte in the electrolytic cell is 10 g/L K 2 SiO 3 , 2.5 g/L Na 2 O 2 , and 0.7 g/L NaF , 1.5g/L CH 3 COONa and 2g/L Na 2 VO 3 mixed solution;
  • the micro-arc oxidation was performed for 25 minutes to obtain a guide roller body 1 coated with a ceramic film;
  • Step 3 after washing the guide roller body 1 coated with the ceramic film layer 2 in water, put it into a closed tank, use a silicate solution with a mass concentration of 13g/L, and seal at a temperature of 20°C for 17 minutes;
  • Step 4 After the closed guide roller body 1 coated with the ceramic film is washed with water, it is placed in an air-drying tank for hot air drying to obtain a guide roller.
  • a production method of guide rollers specifically according to the following steps:
  • Step 1 Clean the guide roller body 1 and hang it on the hanger
  • Step 2 Put the hanger equipped with the guide roller body 1 into the electrolytic cell.
  • the electrolytic solution in the electrolytic cell is 9 g/L K 2 SiO 3 , 2.2 g/L Na 2 O 2 , and 0.6 g/L NaF , 1.2g/L CH 3 COONa and 1.5g/L Na 2 VO 3 mixed solution;
  • the micro-arc oxidation was performed for 22 minutes to obtain a guide roller body 1 coated with a ceramic film;
  • Step 3 After washing the guide roller body 1 coated with the ceramic film layer 2 in water, put it into a closed tank, use a silicate solution with a mass concentration of 11 g/L, and seal at a temperature of 17°C for 16 minutes;
  • Step 4 After the closed guide roller body 1 coated with the ceramic film is washed with water, it is placed in an air-drying tank for hot air drying to obtain a guide roller.
  • a production method of guide rollers specifically according to the following steps:
  • Step 1 Clean the guide roller body 1 and hang it on the hanger
  • Step 2 Put the hanger equipped with the guide roller body 1 into the electrolytic cell.
  • the electrolyte in the electrolytic cell is 11 g/L K 2 SiO 3 , 2.8 g/L Na 2 O 2 , 0.9 g/L NaF , 1.8g/L CH 3 COONa and 2.8g/L Na 2 VO 3 mixed solution;
  • the micro-arc oxidation was performed for 28 minutes to obtain a guide roller body 1 coated with a ceramic film;
  • Step 3 after washing the guide roller body 1 coated with the ceramic film layer 2 in water, put it in a closed tank, use a silicate solution with a mass concentration of 14g/L, and seal at a temperature of 22°C for 19 minutes;
  • Step 4 After the closed guide roller body 1 coated with the ceramic film is washed with water, it is placed in an air-drying tank for hot air drying to obtain a guide roller.
  • the thickness of the ceramic film layer on the guide roller obtained in Example 1 and Example 5 and the hardness of the guide roller were tested to obtain the physical property table of the guide roller as shown in Table 1.
  • the physical properties of the guide rollers coated with a ceramic film layer on the surface of the guide roller body by the micro-arc oxidation method of the present application are higher than those of the existing guide rollers.
  • the wear resistance test was run on the equipment for 30 days (continuously) to detect the thickness of the film. Compared with the processed one, there was almost no change, and the size of the wear could not be detected.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

本申请公开了一种导向辊，包括导向辊本体，导向辊本体的外壁上镀有陶瓷膜层。本申请还公开了该导向辊的生产方法，具体按照装挂导向辊本体微弧氧化在导向辊本体上镀陶瓷膜层；然后将镀有陶瓷膜层的导向辊本体进行封闭，水洗风干的步骤进行。本申请一种导向辊，具有较高的表面硬度和良好的耐热性、耐磨损性、抗腐蚀性和绝缘性；本申请的导向辊的生产方法，工艺稳定可靠、节能环保，适合批量生产。

Description

一种导向辊及其生产方法
本申请要求于2018年12月29日提交至中国国家知识产权局、申请号为201811630717.9、发明名称为“一种导向辊及其生产方法”的专利申请的优先权。
技术领域
本申请属于印刷装置技术领域，涉及一种导向辊，具体为一种印刷机上的导向辊，本申请还涉及该导向辊的生产方法。
背景技术
目前导向辊在各种印刷机中广泛应用，为印刷机关键零部件，传统阳极氧化导向辊表面存在颜色不均匀，耐腐蚀性、耐磨性差的缺陷；而硬质氧化导向辊在由于铝型材加强筋处存材料密度变化的问题导致氧化后辊身表面出现颜色不均匀、黑线、高点的问题。
发明内容
本申请的目的是提供一种导向辊，具有较高的表面硬度和良好的耐热性、耐磨损性、抗腐蚀性和绝缘性。
本申请还公开了该导向辊的生产方法。
本申请所采用的第一种技术方案是，一种导向辊，包括导向辊本体，导向辊本体的外壁上镀有陶瓷膜层。
本申请第一种技术方案的特点还在于：
陶瓷膜层2的厚度为0.015-0.02mm。
本申请采用的另一种技术方案是：
一种导向辊的生产方法，其中，具体按照下述步骤进行：
步骤1，将导向辊本体进行清洗后装挂到挂具上；
步骤2，将装有导向辊本体的挂具放入电解槽中，微弧氧化，得到镀有陶瓷膜层的导向辊本体；
步骤3，将镀有陶瓷膜层的导向辊本体水洗后，放入封闭槽中进行封闭；
步骤4，将封闭后的镀有陶瓷膜层的导向辊本体水洗后，放入风干槽中进行热风干燥，得到导向辊。
本申请第二种技术方案的特点还在于：
步骤2中进行微弧氧化时电解液为K 2SiO 3、Na 2O 2、NaF、CH 3COONa和Na 2VO 3组成的混合溶液，混合溶液的PH为9～12。
混合溶液中K 2SiO 3的浓度为8～12g/L，所述混合溶液中Na 2O 2的浓度为2～3g/L，所述混合溶液中NaF的浓度为0.5～1g/L，所述混合溶液中CH 3COONa的浓度为1～2g/L，所述混合溶液中Na 2VO 3的浓度为1～3g/L。
步骤2微弧氧化时电压为380v，电流密度1.0A/dm 2～2A/dm 2，微弧氧化的时间为20min～30min，微弧氧化的温度为10℃～25℃。
步骤3中使用质量浓度为10～15g/L硅酸盐溶液对镀有陶瓷膜层的导向辊本体1进行封闭，封闭的温度为15℃～25℃，封闭的时间为15min～20min。
本申请的有益效果是：
本申请一种导向辊，具有较高的表面硬度和良好的耐热性、耐磨损性、抗腐蚀性和绝缘性；本申请的导向辊的生产方法，工艺稳定可靠、节能环保，适合批量生产。
附图说明
图1是本申请一种导向辊的结构示意图。
图中，1.导向辊本体，2.陶瓷膜层。
具体实施方式
下面结合附图和具体实施方式对本申请进行详细说明。
一种导向辊，如图1所示，包括导向辊本体1，导向辊本体1的外壁上镀有厚度为0.015mm～0.02mm陶瓷膜层2。
本申请一种导向辊中，在导向辊本体1上通过微弧氧化的方法镀有陶瓷膜层，能够大幅度地提高了印刷机上的导向辊的表面硬度，同时还能够使得导向辊具有良好的耐磨性、耐热性、抗腐蚀和绝缘性；同时本申请的导向辊上的陶瓷膜层的厚度为0.015mm～0.02mm能够使得导向辊在具有良好的绝缘性能的同时还能够具有微弱的导电性能，使得导向辊在运行的时候产生的部分静电能够被陶瓷膜层2导出，从而减小导向辊静电，提高印刷品的质量。
一种导向辊的生产方法，具体按照下述步骤进行：
步骤1，将导向辊本体1使用清水和洗涤剂进行清洗后装挂到挂具上；
步骤2，将装有导向辊本体1的挂具放入电解槽中，电解槽的电解液为8～12g/L的K 2SiO 3、2～3g/L的Na 2O 2、0.5～1g/L的NaF、1～2g/L的CH 3COONa和1～3g/L的Na 2VO 3组成的混合溶液；
在电压为380V，电流密度为1.0A/dm 2～2A/dm 2，温度为10℃～25℃的条件下微弧氧化20min～30min，得到镀有陶瓷膜层的导向辊本体1；
步骤3，将镀有陶瓷膜层2的导向辊本体1水洗后，放入封闭槽中，使用质量浓度为10～15g/L硅酸盐溶液，在15℃～25℃的温度下封闭15min～20min；
步骤4，将封闭后的镀有陶瓷膜层的导向辊本体1水洗后，放入风干槽中进行热风干燥，得到导向辊。
本申请一种导向辊的生产方法中，使用有机硅溶液对镀有陶瓷膜层2的导向辊本体1进行封闭后，能够使氧化膜层的孔隙得到填充，保证膜层的表面防腐蚀能力提高，同时表面也容易清洗；同时本申请的封闭后的镀有陶瓷膜层2的导向辊本体1使用槽内热风干燥，能够降低表面产生的水渍，使得氧化膜层干净，不易沾染油污等，同时也有一定的填充作用。
实施例1
一种导向辊的生产方法，具体按照下述步骤进行：
步骤1，将导向辊本体1进行清洗后装挂到挂具上；
步骤2，将装有导向辊本体1的挂具放入电解槽中，电解槽的电解液为8g/L的K 2SiO 3、2g/L的Na 2O 2、0.5g/L的NaF、1g/L的CH 3COONa和1g/L的Na 2VO 3组成的混合溶液；
在电压为380V，电流密度为1.0A/dm 2，温度为10℃的条件下微弧氧化20min，得到镀有陶瓷膜层的导向辊本体1；
步骤3，将镀有陶瓷膜层2的导向辊本体1水洗后，放入封闭槽中，使用质量浓度为10g/L硅酸盐溶液，在15℃的温度下封闭15min；
步骤4，将封闭后的镀有陶瓷膜层的导向辊本体1水洗后，放入风干槽中进行热风干燥，得到导向辊。
实施例2
一种导向辊的生产方法，具体按照下述步骤进行：
步骤1，将导向辊本体1进行清洗后装挂到挂具上；
步骤2，将装有导向辊本体1的挂具放入电解槽中，电解槽的电解液为12g/L的K 2SiO 3、3g/L的Na 2O 2、0.5～1g/L的NaF、2g/L的CH 3COONa和3g/L的Na 2VO 3组成的混合溶液；
在电压为380V，电流密度为2A/dm 2，温度为25℃的条件下微弧氧化20-30min，得到镀有陶瓷膜层的导向辊本体1；
步骤3，将镀有陶瓷膜层2的导向辊本体1水洗后，放入封闭槽中，使用质量浓度为15g/L硅酸盐溶液，在25℃的温度下封闭20min；
步骤4，将封闭后的镀有陶瓷膜层的导向辊本体1水洗后，放入风干槽中进行热风干燥，得到导向辊。
实施例3
一种导向辊的生产方法，具体按照下述步骤进行：
步骤1，将导向辊本体1进行清洗后装挂到挂具上；
步骤2，将装有导向辊本体1的挂具放入电解槽中，电解槽的电解液为10g/L的K 2SiO 3、2.5g/L的Na 2O 2、0.7g/L的NaF、1.5g/L的CH 3COONa和2g/L的Na 2VO 3组成的混合溶液；
在电压为380V，电流密度为1.5A/dm 2，温度为17℃的条件下微弧氧化25min，得到镀有陶瓷膜层的导向辊本体1；
步骤3，将镀有陶瓷膜层2的导向辊本体1水洗后，放入封闭槽中，使用质量浓度为13g/L硅酸盐溶液，在20℃的温度下封闭17min；
步骤4，将封闭后的镀有陶瓷膜层的导向辊本体1水洗后，放入风干槽中进行热风干燥，得到导向辊。
实施例4
一种导向辊的生产方法，具体按照下述步骤进行：
步骤1，将导向辊本体1进行清洗后装挂到挂具上；
步骤2，将装有导向辊本体1的挂具放入电解槽中，电解槽的电解液为9g/L的K 2SiO 3、2.2g/L的Na 2O 2、0.6g/L的NaF、1.2g/L的CH 3COONa和1.5g/L的Na 2VO 3组成的混合溶液；
在电压为380V，电流密度为1.2A/dm 2，温度为13℃的条件下微弧氧化22min，得到镀有陶瓷膜层的导向辊本体1；
步骤3，将镀有陶瓷膜层2的导向辊本体1水洗后，放入封闭槽中，使用质量浓度为11g/L硅酸盐溶液，在17℃的温度下封闭16min；
步骤4，将封闭后的镀有陶瓷膜层的导向辊本体1水洗后，放入风干槽中进行热风干燥，得到导向辊。
实施例5
一种导向辊的生产方法，具体按照下述步骤进行：
步骤1，将导向辊本体1进行清洗后装挂到挂具上；
步骤2，将装有导向辊本体1的挂具放入电解槽中，电解槽的电解液为11g/L的K 2SiO 3、2.8g/L的Na 2O 2、0.9g/L的NaF、1.8g/L的CH 3COONa和2.8g/L的Na 2VO 3组成的混合溶液；
在电压为380V，电流密度为1.9A/dm 2，温度为22℃的条件下微弧氧化28min，得到镀有陶瓷膜层的导向辊本体1；
步骤3，将镀有陶瓷膜层2的导向辊本体1水洗后，放入封闭槽中，使用质量浓度为14g/L硅酸盐溶液，在22℃的温度下封闭19min；
步骤4，将封闭后的镀有陶瓷膜层的导向辊本体1水洗后，放入风干槽中进行热风干燥，得到导向辊。
将实施例1-实施例5得到的导向辊上的陶瓷膜层的厚度和导向辊的硬度进行测试，得到如表1所示的导向辊的物理性能表。
如表1所示，本申请的通过微弧氧化的方法在导向辊本体的表面镀有陶瓷膜层的导向辊的物理性能均高于现有的导向辊。
表1 导向辊的物理性能表
Figure PCTCN2019129883-appb-000001
耐磨性实验在设备上运行30天(连续)检测膜层厚度，和加工完后相比较，几乎无变化，检测不出来磨损的大小。

Claims (7)

  1. 一种导向辊，其中，包括导向辊本体(1)，所述导向辊本体(1)的外壁上镀有陶瓷膜层(2)。
  2. 根据权利要求1所述的一种导向辊，其中，所述陶瓷膜层(2)的厚度为0.015-0.02mm。
  3. 一种导向辊的生产方法，其中，具体按照下述步骤进行：
    步骤1，将导向辊本体(1)进行清洗后装挂到挂具上；
    步骤2，将装有导向辊本体(1)的挂具放入电解槽中，微弧氧化，得到镀有陶瓷膜层的导向辊本体(1)；
    步骤3，将镀有陶瓷膜层(2)的导向辊本体(1)水洗后，放入封闭槽中进行封闭；
    步骤4，将封闭后的镀有陶瓷膜层的导向辊本体(1)水洗后，放入风干槽中进行热风干燥，得到导向辊。
  4. 根据权利要求3所述的一种导向辊的生产方法，其中，所述步骤2中进行微弧氧化时电解液为K 2SiO 3、Na 2O 2、NaF、CH 3COONa和Na 2VO 3组成的混合溶液，所述混合溶液的PH为9～12。
  5. 根据权利要求4所述的一种导向辊的生产方法，其中，所述混合溶液中K 2SiO 3的浓度为8～12g/L，所述混合溶液中Na 2O 2的浓度为2～3g/L，所述混合溶液中NaF的浓度为0.5～1g/L，所述混合溶液中CH 3COONa的浓度为1～2g/L，所述混合溶液中Na 2VO 3的浓度为1～3g/L。
  6. 根据权利要求3所述的一种导向辊的生产方法，其中，步骤2微弧氧化时电压为380v，电流密度1.0A/dm 2～2A/dm 2，微弧氧化的时间为20min～30min，微弧氧化的温度为10℃～25℃。
  7. 根据权利要求3所述的一种导向辊的生产方法，其中，所述步骤3中使用质量浓度为10～15g/L硅酸盐溶液对镀有陶瓷膜层的导向辊本体(1)进行封闭，封闭的温度为15℃～25℃，封闭的时间为15min～20min。
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