CN104278305A - 电镀件镀层处理工艺 - Google Patents

电镀件镀层处理工艺 Download PDF

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Publication number
CN104278305A
CN104278305A CN201310276818.1A CN201310276818A CN104278305A CN 104278305 A CN104278305 A CN 104278305A CN 201310276818 A CN201310276818 A CN 201310276818A CN 104278305 A CN104278305 A CN 104278305A
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plated item
coating layer
coating
dehydrogenation
rinse bath
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张汝山
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TIANJIN DAGANG GALVANIZED FACTORY
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TIANJIN DAGANG GALVANIZED FACTORY
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    • 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/08—Rinsing
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48—After-treatment of electroplated surfaces
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48—After-treatment of electroplated surfaces
    • C25D5/52—After-treatment of electroplated surfaces by brightening or burnishing
    • 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
    • C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
    • C23C2222/10—Use of solutions containing trivalent chromium but free of hexavalent chromium

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

一种电镀件镀层处理工艺，属于金属电镀领域，尤其涉及到对电镀后的金属工件镀层的处理。其特征是包括以下工序及步骤：a．清洗工序，b．干燥工序，c．除氢工序，d．钝化工序，e．防脱色工序，f．研磨工序，还包括镀液回收工序，镀液回收工序与清洗工序相连接，实现对清洗槽中的电镀液进行回收。其有益效果是，经过本发明处理后的金属电镀件，不但表面镀层光洁，精度高，而且不易变色，耐腐蚀性好。

Description

电镀件镀层处理工艺
 
技术领域
本发明属于金属电镀领域，尤其涉及到对电镀后的金属工件镀层的处理。
背景技术
    现代制造业中，大量使用金属制品，在金属制品上镀层也是常见的生产方法。钝化处理是关键的一个工艺步骤，其目的是为了材料的防腐蚀。因为金属工件电镀后的镀层附着有电镀液，而电镀液中含有的化学成分，会对电镀件的镀层产生腐蚀等影响，因此需要对电镀的金属件镀层进行处理，以便使电镀后的金属工件的外观达到理想的效果。
发明内容
本发明的目的是提供一种电镀件镀层处理工艺，提高镀层表面光亮和美观。
为了达到上述目的，本发明采用的技术方案是：
一种电镀件镀层处理工艺，其特征是包括以下工序及步骤：
a．清洗工序，在清洗槽中注入清水，将电镀件放在清洗槽中上下左右晃动，经2-3个槽顺序进行清洗，清除电镀件表面的电镀液；
b．干燥工序，将水洗后的电镀件采用烘干或用热风方法进行干燥处理；
c．除氢工序，对干燥后的电镀件高温加热，在温度控制住55-70°进行除氢处理；
d．钝化工序，将除氢处理后的电镀件浸泡在三价铬酸盐溶液中，温度55-65°，时间5-8分钟；
e．防脱色工序，在钝化后的电镀件的镀层表面浸涂一层防变色剂，防止其脱色或变色，所述的防变色剂为化学稳定性较高的贵金属或其合金；
f．研磨工序，将防脱色处理的电镀件，经磨床研磨，提高镀层表面光洁度或表面精度；
还包括镀液回收工序，镀液回收工序与清洗工序相连接，实现对清洗槽中的电镀液进行回收。
本发明的有益效果是，经过本发明处理后的金属电镀件，不但表面镀层光洁，精度高，而且不易变色，耐腐蚀性好。
附图说明
图1为本发明工艺流程方框图。
具体实施方式
由附图1可知，本发明包括以下工序及步骤：
a．清洗工序，在清洗槽中注入清水，将电镀件放在清洗槽中上下左右晃动，经2-3个槽顺序进行清洗，清除电镀件表面的电镀液；b．干燥工序，将水洗后的电镀件采用烘干或用热风方法进行干燥处理；c．除氢工序，对干燥后的电镀件高温加热，在温度控制住55-70°进行除氢处理；d．钝化工序，将除氢处理后的电镀件浸泡在三价铬酸盐溶液中，温度55-65°，时间5-8分钟；e．防脱色工序，在钝化后的电镀件的镀层表面浸涂一层防变色剂，防止其脱色或变色，所述的防变色剂为化学稳定性较高的贵金属或其合金；f．研磨工序，将防脱色处理的电镀件，经磨床研磨，提高镀层表面光洁度或表面精度；
为了降低生产成本，节省电镀材料，以及减少污水的排放及污染，本发明还包括镀液回收工序，镀液回收工序与清洗工序相连接，实现对清洗槽中的电镀液进行回收。清洗工序中的电镀液进入镀液回收工序储存，并经蒸发浓缩然后再补充进电镀槽，供电镀使用。

Claims (1)

1.一种电镀件镀层处理工艺，其特征是包括以下工序及步骤：
a．清洗工序，在清洗槽中注入清水，将电镀件放在清洗槽中上下左右晃动，经2-3个槽顺序进行清洗，清除电镀件表面的电镀液；
b．干燥工序，将水洗后的电镀件采用烘干或用热风方法进行干燥处理；
c．除氢工序，对干燥后的电镀件高温加热，在温度控制住55-70°进行除氢处理；
d．钝化工序，将除氢处理后的电镀件浸泡在三价铬酸盐溶液中，温度55-65°，时间5-8分钟；
e．防脱色工序，在钝化后的电镀件的镀层表面浸涂一层防变色剂，防止其脱色或变色，所述的防变色剂为化学稳定性较高的贵金属或其合金；
f．研磨工序，将防脱色处理的电镀件，经磨床研磨，提高镀层表面光洁度或表面精度；
还包括镀液回收工序，镀液回收工序与清洗工序相连接，实现对清洗槽中的电镀液进行回收。
CN201310276818.1A 2013-07-03 2013-07-03 电镀件镀层处理工艺 Pending CN104278305A (zh)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107309604A (zh) * 2016-04-26 2017-11-03 芜湖艾蔓设备工程有限公司 一种汽车发动机油底壳冲孔的加工工艺
CN109203505A (zh) * 2018-09-28 2019-01-15 嘉兴星环汽车零部件有限公司 一种汽车及摩托车减震器阀片的生产工艺
CN116334710A (zh) * 2023-03-17 2023-06-27 太仓市华夏电镀有限公司 一种金属配件电镀后处理流水线
CN116377542A (zh) * 2023-03-29 2023-07-04 扬州市景杨表面工程有限公司 新能源汽车工件的钝化处理工艺

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107309604A (zh) * 2016-04-26 2017-11-03 芜湖艾蔓设备工程有限公司 一种汽车发动机油底壳冲孔的加工工艺
CN109203505A (zh) * 2018-09-28 2019-01-15 嘉兴星环汽车零部件有限公司 一种汽车及摩托车减震器阀片的生产工艺
CN116334710A (zh) * 2023-03-17 2023-06-27 太仓市华夏电镀有限公司 一种金属配件电镀后处理流水线
CN116334710B (zh) * 2023-03-17 2023-12-15 太仓市华夏电镀有限公司 一种金属配件电镀后处理流水线
CN116377542A (zh) * 2023-03-29 2023-07-04 扬州市景杨表面工程有限公司 新能源汽车工件的钝化处理工艺

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Application publication date: 20150114