CN112626434A - 一种电力绝缘子铁帽的制备工艺 - Google Patents
一种电力绝缘子铁帽的制备工艺 Download PDFInfo
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 266
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 130
- 239000012212 insulator Substances 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 238000005266 casting Methods 0.000 claims abstract description 119
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000011701 zinc Substances 0.000 claims abstract description 43
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 238000007747 plating Methods 0.000 claims abstract description 27
- 238000001035 drying Methods 0.000 claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 22
- 238000002161 passivation Methods 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- 239000003989 dielectric material Substances 0.000 claims abstract description 15
- 238000005246 galvanizing Methods 0.000 claims abstract description 14
- 238000005498 polishing Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000005422 blasting Methods 0.000 claims abstract description 10
- 238000005406 washing Methods 0.000 claims abstract description 10
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 12
- 238000003723 Smelting Methods 0.000 claims description 12
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 12
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 6
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 235000019270 ammonium chloride Nutrition 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 235000005074 zinc chloride Nutrition 0.000 claims description 6
- 239000011592 zinc chloride Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 229910052702 rhenium Inorganic materials 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000002253 acid Substances 0.000 abstract description 3
- 239000010865 sewage Substances 0.000 abstract description 3
- 239000000428 dust Substances 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000002791 soaking Methods 0.000 description 6
- 239000011259 mixed solution Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000005554 pickling Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 159000000014 iron salts Chemical class 0.000 description 1
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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- 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
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/086—Descaling; Removing coating films
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
Abstract
本发明公开了一种电力绝缘子铁帽的制备工艺,涉及绝缘子技术领域,包括以下步骤:制备铁帽铸件;将铁帽铸件经打磨、抛丸处理后,水洗、干燥,浸入到助镀剂中,取出,烘干;将铁帽铸件浸入融化的锌液中,在其表面附着液态锌;将铁帽铸件从锌液中取出,先在空气中冷却,然后再放入水中冷却;检验铁帽铸件表面锌层厚度;将铁帽铸件放入钝化槽进行钝化处理,干燥;对铁帽铸件表面进行打磨、整修。本发明将铸件打磨后抛丸处理去除脏污及氧化层,将抛丸后的铸件表面粉尘用清水冲洗后即可直接浸入助镀剂中,进行助镀和后续的镀锌处理,镀层和铸件之间附着力好,取消酸洗工序,减少污水的排放,降低成本,符合当前环保要求。
Description
技术领域
本发明涉及绝缘子技术领域,尤其涉及一种电力绝缘子铁帽的制备工艺。
背景技术
绝缘子广泛应用于电力设备中,一般属于外部绝缘,架空输电线路、发电厂和变电所的母线和各种电气设备的外部带电导体均需用绝缘子支持。绝缘子在架空输电线路中起着两个基本作用,即支撑导线和防止电流回地,其安装在不同电位的导体之间或导体与地电位构件之间,能够耐受电压和机械应力作用,以保证输电线路的正常运行使用。用于高压直流输电线路中的绝缘子包括瓷件,瓷件上方安装有铁帽,由于绝缘子表面持续泄漏电流,会对处于电解腐蚀正极的铁帽造成腐蚀,影响绝缘子的使用寿命,因此,需要对铁帽进行防腐蚀处理。
现有技术中一般对铁帽进行热镀锌防腐处理。然而,目前市场上热镀锌工艺在浸泡锌液前都需要对铸件进行酸洗,酸洗后一方面铸件中的铁盐会被带到锌锅内,造成锌耗增加、镀锌成本增高、降低热浸镀锌质量下降等缺陷;另一方面还需要用大量的水冲洗酸洗后的铸件,造成大量工业废水的产生、增加污水处理成本。
发明内容
基于背景技术存在的技术问题,本发明提出了一种电力绝缘子铁帽的制备工艺,无需酸洗即可进行热镀锌处理。
本发明提出的一种电力绝缘子铁帽的制备工艺,包括以下步骤:
S1、制备铸件:向熔炼炉中依次加入废钢、增碳剂、锰铁、硅铁合金,升温至1540~1570℃进行熔炼,炉前铁水化学成分检测合格,出炉球化,转入中转包后扒渣,倒入浇注包,在1380~1420℃下进行浇注,得铁帽铸件;其中,所述铁帽铸件的组成成分按重量百分比包括:C 3.6~3.9%、Si 2.6~2.9%、Mn 0.3~0.5%、S≤0.015%、P≤0.015%、Mg≤0.03%、Re≤0.02%,余量为Fe;
S2、助镀:将铁帽铸件经打磨、抛丸处理后,水洗、干燥,然后将其浸入到助镀剂中,取出,烘干;
S3、热镀锌:将铁帽铸件浸入融化的锌液中,在铁帽铸件表面附着液态锌;
S4、冷却:将铁帽铸件从锌液中取出,先在空气中冷却,然后再放入水中冷却;
S5、检验:检验铁帽铸件表面锌层厚度;
S6、钝化:将铁帽铸件放入钝化槽进行钝化处理,干燥;
S7、出厂:对铁帽铸件表面进行打磨、整修,出厂。
优选地,S2中,助镀剂为氯化铵和氯化锌的混合液;浸入到助镀剂中浸泡2~3min。
优选地,S2中,于100~120℃下烘干。
优选地,S3中,将烘干后带温的铁帽铸件于3min内浸入融化的锌液中。
优选地,S3中,将铁帽铸件浸入融化的锌液中浸泡3~5min,锌液温度为520~550℃。
优选地,S4中,将铁帽铸件从锌液中取出,先在空气中冷却40~60min,然后再放入水中冷却。
有益效果:本发明提出了一种电力绝缘子铁帽的制备工艺,相较于传统工艺中热镀锌前对铸件进行酸洗,本发明将铸件打磨后进行抛丸处理去除铸件表面脏污及氧化层,将抛丸后的铸件表面粉尘直接用清水冲洗后即可直接浸入助镀剂中,进行助镀和后续的镀锌处理,镀层和铸件之间附着力好,取消酸洗工序,减少污水的排放,降低成本,符合当前环保要求。
具体实施方式
下面,通过具体实施例对本发明的技术方案进行详细说明。
实施例1
本发明提出的一种电力绝缘子铁帽的制备工艺,包括以下步骤:
S1、制备铸件:向熔炼炉中依次加入废钢、增碳剂、锰铁、硅铁合金,升温至1540~1560℃进行熔炼,炉前铁水化学成分检测合格,出炉球化,转入中转包后扒渣,倒入浇注包,在1380~1400℃下进行浇注,得铁帽铸件;其中,所述铁帽铸件的组成成分按重量百分比包括:C 3.6%、Si 2.6%、Mn 0.42%、S≤0.015%、P≤0.015%、Mg≤0.03%、Re≤0.02%,余量为Fe;
S2、助镀:将铁帽铸件经打磨、抛丸处理后,水洗、干燥,然后将其浸入到助镀剂中浸泡2min,取出,于105℃下烘干;其中,助镀剂为氯化铵和氯化锌的混合液;
S3、热镀锌:将烘干后带温的铁帽铸件于3min内浸入融化的锌液中,浸泡3min,锌液温度为520℃,在铁帽铸件表面附着液态锌;
S4、冷却:将铁帽铸件从锌液中取出,先在空气中冷却45min,然后再放入水中冷却;
S5、检验:检验铁帽铸件表面锌层厚度;
S6、钝化:将铁帽铸件放入钝化槽进行钝化处理,干燥;
S7、出厂:对铁帽铸件表面进行打磨、整修,出厂。
经检测,本实施例中制备的电力绝缘子铁帽的硬度为187HRB,抗拉强度为456KN。
实施例2
本发明提出的一种电力绝缘子铁帽的制备工艺,包括以下步骤:
S1、制备铸件:向熔炼炉中依次加入废钢、增碳剂、锰铁、硅铁合金,升温至1550~1570℃进行熔炼,炉前铁水化学成分检测合格,出炉球化,转入中转包后扒渣,倒入浇注包,在1400~1420℃下进行浇注,得铁帽铸件;其中,所述铁帽铸件的组成成分按重量百分比包括:C 3.9%、Si 2.75%、Mn 0.3%、S≤0.015%、P≤0.015%、Mg≤0.03%、Re≤0.02%,余量为Fe;
S2、助镀:将铁帽铸件经打磨、抛丸处理后,水洗、干燥,然后将其浸入到助镀剂中浸泡2.5min,取出,于110℃下烘干;其中,助镀剂为氯化铵和氯化锌的混合液;
S3、热镀锌:将烘干后带温的铁帽铸件于3min内浸入融化的锌液中,浸泡4min,锌液温度为530℃,在铁帽铸件表面附着液态锌;
S4、冷却:将铁帽铸件从锌液中取出,先在空气中冷却50min,然后再放入水中冷却;
S5、检验:检验铁帽铸件表面锌层厚度;
S6、钝化:将铁帽铸件放入钝化槽进行钝化处理,干燥;
S7、出厂:对铁帽铸件表面进行打磨、整修,出厂。
经检测,本实施例中制备的电力绝缘子铁帽的硬度为181HRB,抗拉强度为462KN。
实施例3
本发明提出的一种电力绝缘子铁帽的制备工艺,包括以下步骤:
S1、制备铸件:向熔炼炉中依次加入废钢、增碳剂、锰铁、硅铁合金,升温至1550~1570℃进行熔炼,炉前铁水化学成分检测合格,出炉球化,转入中转包后扒渣,倒入浇注包,在1390~1400℃下进行浇注,得铁帽铸件;其中,所述铁帽铸件的组成成分按重量百分比包括:C 3.7%、Si 2.84%、Mn 0.5%、S≤0.015%、P≤0.015%、Mg≤0.03%、Re≤0.02%,余量为Fe;
S2、助镀:将铁帽铸件经打磨、抛丸处理后,水洗、干燥,然后将其浸入到助镀剂中浸泡2.5min,取出,于115℃下烘干;其中,助镀剂为氯化铵和氯化锌的混合液;
S3、热镀锌:将烘干后带温的铁帽铸件于3min内浸入融化的锌液中,浸泡4.5min,锌液温度为540℃,在铁帽铸件表面附着液态锌;
S4、冷却:将铁帽铸件从锌液中取出,先在空气中冷却55min,然后再放入水中冷却;
S5、检验:检验铁帽铸件表面锌层厚度;
S6、钝化:将铁帽铸件放入钝化槽进行钝化处理,干燥;
S7、出厂:对铁帽铸件表面进行打磨、整修,出厂。
经检测,本实施例中制备的电力绝缘子铁帽的硬度为210HRB,抗拉强度为475KN。
实施例4
本发明提出的一种电力绝缘子铁帽的制备工艺,包括以下步骤:
S1、制备铸件:向熔炼炉中依次加入废钢、增碳剂、锰铁、硅铁合金,升温至1550~1570℃进行熔炼,炉前铁水化学成分检测合格,出炉球化,转入中转包后扒渣,倒入浇注包,在1400~1410℃下进行浇注,得铁帽铸件;其中,所述铁帽铸件的组成成分按重量百分比包括:C 3.78%、Si 2.9%、Mn 0.38%、S≤0.015%、P≤0.015%、Mg≤0.03%、Re≤0.02%,余量为Fe;
S2、助镀:将铁帽铸件经打磨、抛丸处理后,水洗、干燥,然后将其浸入到助镀剂中浸泡3min,取出,于120℃下烘干;其中,助镀剂为氯化铵和氯化锌的混合液;
S3、热镀锌:将烘干后带温的铁帽铸件于3min内浸入融化的锌液中,浸泡5min,锌液温度为550℃,在铁帽铸件表面附着液态锌;
S4、冷却:将铁帽铸件从锌液中取出,先在空气中冷却60min,然后再放入水中冷却;
S5、检验:检验铁帽铸件表面锌层厚度;
S6、钝化:将铁帽铸件放入钝化槽进行钝化处理,干燥;
S7、出厂:对铁帽铸件表面进行打磨、整修,出厂。
经检测,本实施例中制备的电力绝缘子铁帽的硬度为198HRB,抗拉强度为471KN。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。
Claims (6)
1.一种电力绝缘子铁帽的制备工艺,其特征在于,包括以下步骤:
S1、制备铸件:向熔炼炉中依次加入废钢、增碳剂、锰铁、硅铁合金,升温至1540~1570℃进行熔炼,炉前铁水化学成分检测合格,出炉球化,转入中转包后扒渣,倒入浇注包,在1380~1420℃下进行浇注,得铁帽铸件;其中,所述铁帽铸件的组成成分按重量百分比包括:C 3.6~3.9%、Si 2.6~2.9%、Mn0.3~0.5%、S≤0.015%、P≤0.015%、Mg≤0.03%、Re≤0.02%,余量为Fe;
S2、助镀:将铁帽铸件经打磨、抛丸处理后,水洗、干燥,然后将其浸入到助镀剂中,取出,烘干;
S3、热镀锌:将铁帽铸件浸入融化的锌液中,在铁帽铸件表面附着液态锌;
S4、冷却:将铁帽铸件从锌液中取出,先在空气中冷却,然后再放入水中冷却;
S5、检验:检验铁帽铸件表面锌层厚度;
S6、钝化:将铁帽铸件放入钝化槽进行钝化处理,干燥;
S7、出厂:对铁帽铸件表面进行打磨、整修,出厂。
2.根据权利要求1所述的电力绝缘子铁帽的制备工艺,其特征在于,S2中,助镀剂为氯化铵和氯化锌的混合液;浸入到助镀剂中浸泡2~3min。
3.根据权利要求1或2所述的电力绝缘子铁帽的制备工艺,其特征在于,S2中,于100~120℃下烘干。
4.根据权利要求1-3任一项所述的电力绝缘子铁帽的制备工艺,其特征在于,S3中,将烘干后带温的铁帽铸件于3min内浸入融化的锌液中。
5.根据权利要求1-4任一项所述的电力绝缘子铁帽的制备工艺,其特征在于,S3中,将铁帽铸件浸入融化的锌液中浸泡3~5min,锌液温度为520~550℃。
6.根据权利要求1-4任一项所述的电力绝缘子铁帽的制备工艺,其特征在于,S4中,将铁帽铸件从锌液中取出,先在空气中冷却40~60min,然后再放入水中冷却。
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