CN107236977A - A kind of electroplating pretreatment process optimization method - Google Patents

A kind of electroplating pretreatment process optimization method Download PDF

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Publication number
CN107236977A
CN107236977A CN201710516260.8A CN201710516260A CN107236977A CN 107236977 A CN107236977 A CN 107236977A CN 201710516260 A CN201710516260 A CN 201710516260A CN 107236977 A CN107236977 A CN 107236977A
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CN
China
Prior art keywords
workpiece
oil
processing
optimization
carry
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
Application number
CN201710516260.8A
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Chinese (zh)
Inventor
张辉华
裴虎
陈立学
袁铭
张欢
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Shiyan Association Of Industry And Trade Co Ltd
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Shiyan Association Of Industry And Trade Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shiyan Association Of Industry And Trade Co Ltd filed Critical Shiyan Association Of Industry And Trade Co Ltd
Priority to CN201710516260.8A priority Critical patent/CN107236977A/en
Publication of CN107236977A publication Critical patent/CN107236977A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/34Pretreatment of metallic surfaces to be electroplated
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/34Pretreatment of metallic surfaces to be electroplated
    • C25D5/36Pretreatment of metallic surfaces to be electroplated of iron or steel

Abstract

The invention discloses a kind of electroplating pretreatment process optimization method, this method is comprised the following steps that:1), the workpiece for needing to electroplate polished, polished, tumbling, scratch brushing and grit blasting operation processing;2), to step 1)The smooth workpiece of middle surface treatment is hung on the negative electrode of alkaline electrolyte, using activation polarization effect and electrode surface bubbing, so that destroying oil film carries out oil removing;3), to step 2)In oil removing first workpiece carry out physics ultrasonic assistant oil removal treatment;4), to step 3)In the workpiece that treats hang over electrolytic degreasing again carried out on the anode of alkaline electrolyte;5), by step 4)In the workpiece that treats be put among acid solution and carry out acid activation processing, its purpose is to improve the surface-active of part;6), to step 5)The workpiece that middle processing is completed carries out zinc-plated processing, and zinc-plated standard electrode potential is 0.76V, and zinc coating belongs to anodic coating, and it is mainly used in preventing the corrosion of steel.

Description

A kind of electroplating pretreatment process optimization method
Technical field
The present invention relates to the handling process technical field of electroplated product, specially a kind of electroplating pretreatment process optimization side Method.
Background technology
Plating refers in the saline solution containing preplating metal, using plated parent metal as negative electrode, by electrolysis, The cation of preplating metal in plating solution is deposited in base metal surface, form a kind of method of surface finish of coating.Plating Layer performance is different from parent metal, with new feature.Protective coating is divided into according to the function of coating, decorative coating and its Its functional coating.
Plating is a kind of electrochemical process, is also that a kind of basic process of oxidation-reduction process plating is to be immersed in part As negative electrode in the solution of metal salt, metallic plate is connect after dc source as anode, and required coating is deposited on part.
For example:During nickel plating, negative electrode is part to be plated, and anode is pure nickel plate, and following reaction occurs respectively in anode and cathode:
Negative electrode (plating piece):Ni2++2e → Ni (main reaction)
2H++e → H2 ↑ (side reaction)
Anode (nickel plate):Ni -2e → Ni2+ (main reaction)
4OH--4e → 2H2O+O2+4e (side reaction)
Not every metal ion can come out from aqueous solution deposition, if reducing hydrogen ions are the side reaction of hydrogen on negative electrode In the highest flight, then metal ion is difficult to separate out on negative electrode according to experiment, possibility of the metal ion from aqueous solution electrodeposition Property, certain rule can be obtained from the periodic table of elements, as shown in table 1.1.
Anode is divided into soluble anode and insoluble anode, and most of anodes are the soluble anode corresponding with coating, Such as:Zinc-plated is zinc anode, and silver-plated is silver anode, and plating tin-lead alloy is using tin-lead alloy anode but a small number of plating are due to sun Pole dissolving is difficult, using insoluble anode, and such as acidity is gold-plated to use mostly platinum or the main salt ion of Ni―Ti anode plating solutions by addition The standard gold-containing solution prepared supplements anode for chrome-plating using pure lead, Lead-tin alloy, the insoluble anode such as lead-antimony alloy.
Existing traditional electroplating pretreatment process flow, traditional pre-treating technology production efficiency is low, and operating cost is high, Highly basic, the strong acid waste water of generation are more, are exerted a certain influence to environment, using high temperature, cause the usage amount of bunker coal, increase The shortcoming that production cost is high is added, it is impossible to meet production requirement.
The content of the invention
It is an object of the invention to provide a kind of electroplating pretreatment process optimization method, to solve to carry in above-mentioned background technology The traditional pre-treating technology production efficiency gone out is low, and operating cost is high, and high temperature coal amount is big, and highly basic, the strong acid waste water of generation are more, The problem of being exerted a certain influence to environment.
To achieve the above object, the present invention provides following technical scheme:A kind of electroplating pretreatment process optimization method, it is described The step of technology, includes:
1), the workpiece for needing to electroplate polished, polished, tumbling, scratch brushing and grit blasting operation processing;
2), to step 1)The smooth workpiece of middle surface treatment is hung on the negative electrode of alkaline electrolyte, is made using activation polarization With and electrode surface bubbing so that destroy oil film carry out oil removing;
3), to step 2)In oil removing first workpiece carry out the secondary oil removal treatment of physics ultrasonic wave;
4), to step 3)In the workpiece that treats hang over three electrolytic degreasings carried out on the anode of alkaline electrolyte;
5), by step 4)In the workpiece that treats be put among acid solution and carry out acid activation processing;
6), to step 5)The workpiece that middle processing is completed carries out zinc-plated processing, and zinc-plated standard electrode potential is -0.76V, to steel For workpiece, zinc coating belongs to anodic coating, and it is mainly used in preventing the corrosion of steel;
It is preferred that, the principle being electrolysed using cathode anode is handled the punching oil of workpiece surface to be plated, antirust oil, cut at normal temperatures Cut lubricating oil.
It is preferred that, using physics ultrasonic wave principle, strengthen the effect of oil removing, the greasy dirt of product surface is thoroughly handled dry Only, reach that plating is required.
Compared with prior art, the beneficial effects of the invention are as follows:
One is that the electroplating pretreatment process optimization method utilizes physics ultrasonic wave principle, strengthens the effect of oil removing, makes product table Thoroughly processing is clean for the greasy dirt in face, reaches that plating is required;
Two are the reduction of the usage amount of pre-treatment sodium hydroxide, tertiary sodium phosphate, sodium carbonate, save material 30% in season;
Three be the consumption for reducing heat energy, reduces fuel the consumption of coal, cost-effective 30%;
Four be to reduce to optimize traditional technological process, production efficiency is substantially improved, material consumption is reduced, and can save substantial amounts of production Material, creates more profits.
Embodiment
The technical scheme in the embodiment of the present invention is clearly and completely described below, it is clear that described embodiment Only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the common skill in this area The every other embodiment that art personnel are obtained under the premise of creative work is not made, belongs to the model that the present invention is protected Enclose.
The present invention provides a kind of technical scheme:A kind of electroplating pretreatment process optimization method, comprises the following steps:
1), the workpiece for needing to electroplate polished, polished, tumbling, scratch brushing and grit blasting operation processing, effectively by workpiece surface Iron rust and burr etc. Ricoh slide it is clean;
2), to step 1)The smooth workpiece of middle surface treatment is hung on the negative electrode of alkaline electrolyte, is made using activation polarization With and electrode surface bubbing so that destroy oil film carry out oil removing;
3), to step 2)In oil removing first workpiece carry out physics ultrasonic assistant oil removal treatment;
4), to step 3)In the workpiece that treats hang over electrolytic degreasing again carried out on the anode of alkaline electrolyte;
5), by step 4)In the workpiece that treats be put among acid solution and carry out acid activation processing, its purpose is to improve The surface-active of part, is divided into pickling and weak etch, pickling be in order to remove the oxide skin of piece surface, weak etch be for Ensure the bond strength of coating;
6), to step 5)The workpiece that middle processing is completed carries out zinc-plated processing, and zinc-plated standard electrode potential is -0.76V, to steel For workpiece, zinc coating belongs to anodic coating, and it is mainly used in preventing the corrosion of steel;
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, its according to The technical scheme described in foregoing embodiments can so be modified, or which part technical characteristic is equally replaced Change, within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc. should be included in the present invention Protection domain within.

Claims (3)

1. a kind of electroplating pretreatment process optimization method, it is characterised in that:Comprise the following steps.
1), the workpiece for needing to electroplate polished, polished, tumbling, scratch brushing and grit blasting operation processing;
2), to step 1)The smooth workpiece of middle surface treatment is hung on the negative electrode of alkaline electrolyte, is made using activation polarization With and electrode surface bubbing so that destroy oil film carry out oil removing;
3), to step 2)In oil removing first workpiece carry out the secondary oil removal treatment of physics ultrasonic wave;
4), to step 3)In the workpiece that treats hang over three electrolytic degreasings carried out on the anode of alkaline electrolyte;
5), by step 4)In the workpiece that treats be put among acid solution and carry out acid activation processing;
6), to step 5)The workpiece that middle processing is completed carries out zinc-plated processing.
2. a kind of electroplating pretreatment process optimization method according to claim 1, it is characterised in that:The step 2 is with 4) The principle being electrolysed using cathode anode, handles the punching oil, antirust oil, cutting oil of workpiece surface to be plated at normal temperatures.
3. a kind of electroplating pretreatment process optimization method according to claim 1, it is characterised in that:The step 3)Utilize Physics ultrasonic wave principle, strengthens the effect of oil removing, the greasy dirt of product surface is thoroughly handled clean, reaches that plating is required.
CN201710516260.8A 2017-06-29 2017-06-29 A kind of electroplating pretreatment process optimization method Pending CN107236977A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710516260.8A CN107236977A (en) 2017-06-29 2017-06-29 A kind of electroplating pretreatment process optimization method

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Application Number Priority Date Filing Date Title
CN201710516260.8A CN107236977A (en) 2017-06-29 2017-06-29 A kind of electroplating pretreatment process optimization method

Publications (1)

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CN107236977A true CN107236977A (en) 2017-10-10

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109054631A (en) * 2018-08-13 2018-12-21 枣庄鑫金山智能机械股份有限公司 A kind of process for metallizing surface of granite
CN110885996A (en) * 2019-12-25 2020-03-17 东莞立德精密工业有限公司 Hardware surface treatment process and hardware
CN110923797A (en) * 2019-11-08 2020-03-27 东莞市国瓷新材料科技有限公司 Process for improving DPC electroplating hole filling uniformity by utilizing electrolytic cleaning and cleaning

Citations (7)

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Publication number Priority date Publication date Assignee Title
US3974045A (en) * 1973-12-10 1976-08-10 Dipsol Chemicals Co., Ltd. Method for electroplating bright zinc
CN1786288A (en) * 2005-11-09 2006-06-14 万向钱潮股份有限公司 Galvanization technology
CN101407928A (en) * 2008-09-11 2009-04-15 许技华 Alkaline zinc-plating additive and zinc-plating process used for iron casting parts thereof
CN103757579A (en) * 2014-01-24 2014-04-30 厦门新钢金属制品有限公司 Zinc plating coating production line
CN104264193A (en) * 2014-10-14 2015-01-07 内江市东桐机械厂 Cyanide-free electrogalvanizing method
CN106086952A (en) * 2016-07-29 2016-11-09 重庆鹏雷汽车配件有限公司 The rack plating method of trivalent coloured silk zinc
CN106319500A (en) * 2016-08-25 2017-01-11 上海航天设备制造总厂 Treatment solution and treatment method for zinc coating black conversion film

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974045A (en) * 1973-12-10 1976-08-10 Dipsol Chemicals Co., Ltd. Method for electroplating bright zinc
CN1786288A (en) * 2005-11-09 2006-06-14 万向钱潮股份有限公司 Galvanization technology
CN101407928A (en) * 2008-09-11 2009-04-15 许技华 Alkaline zinc-plating additive and zinc-plating process used for iron casting parts thereof
CN103757579A (en) * 2014-01-24 2014-04-30 厦门新钢金属制品有限公司 Zinc plating coating production line
CN104264193A (en) * 2014-10-14 2015-01-07 内江市东桐机械厂 Cyanide-free electrogalvanizing method
CN106086952A (en) * 2016-07-29 2016-11-09 重庆鹏雷汽车配件有限公司 The rack plating method of trivalent coloured silk zinc
CN106319500A (en) * 2016-08-25 2017-01-11 上海航天设备制造总厂 Treatment solution and treatment method for zinc coating black conversion film

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
沈品华等编著: "《电镀锌及锌合金》", 31 January 2002, 机械工业出版社 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109054631A (en) * 2018-08-13 2018-12-21 枣庄鑫金山智能机械股份有限公司 A kind of process for metallizing surface of granite
CN110923797A (en) * 2019-11-08 2020-03-27 东莞市国瓷新材料科技有限公司 Process for improving DPC electroplating hole filling uniformity by utilizing electrolytic cleaning and cleaning
CN110885996A (en) * 2019-12-25 2020-03-17 东莞立德精密工业有限公司 Hardware surface treatment process and hardware

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Application publication date: 20171010

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