CN106011976B - A kind of high precision spring surface handling process - Google Patents

A kind of high precision spring surface handling process Download PDF

Info

Publication number
CN106011976B
CN106011976B CN201610530692.XA CN201610530692A CN106011976B CN 106011976 B CN106011976 B CN 106011976B CN 201610530692 A CN201610530692 A CN 201610530692A CN 106011976 B CN106011976 B CN 106011976B
Authority
CN
China
Prior art keywords
spring
drying
handling
precision
solution
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.)
Active
Application number
CN201610530692.XA
Other languages
Chinese (zh)
Other versions
CN106011976A (en
Inventor
余昌国
余程刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Hongqiao Metal Manufacturing Co Ltd
Original Assignee
Anhui Hongqiao Metal Manufacturing 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 Anhui Hongqiao Metal Manufacturing Co Ltd filed Critical Anhui Hongqiao Metal Manufacturing Co Ltd
Priority to CN201610530692.XA priority Critical patent/CN106011976B/en
Publication of CN106011976A publication Critical patent/CN106011976A/en
Application granted granted Critical
Publication of CN106011976B publication Critical patent/CN106011976B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00Electrophoretic coating characterised by the process
    • C25D13/12Electrophoretic coating characterised by the process characterised by the article coated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B31/00Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/02Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C22/00Chemical 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
    • C23C22/05Chemical 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
    • C23C22/60Chemical 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 alkaline aqueous solutions with pH greater than 8
    • C23C22/62Treatment of iron or alloys based thereon

Abstract

The present invention provides a kind of high precision spring surface handling process, is related to spring processing and manufacturing field.Step is:(1) glazing;(2) degreasing, descale;(3) washing drying;(4) oxidation processes;(5) double washings;(6) dry;(7) plating paint;(8) deoil;(9) drying storage.Present invention process is simple, and antiseptic property is good, and Technological adaptability is strong, effectively extends the service life of high precision spring.

Description

A kind of high precision spring surface handling process
Technical field
The present invention relates to spring to fabricate field, and in particular to a kind of high precision spring surface handling process.
Background technology
The exposed corrosion easy in atmosphere of spring, the type that the corrosion of spring is reacted by it can be divided into chemical attack and electrification Learn corrosion.Chemical attack refers to that spring metal surface only occurs chemical reaction with surrounding medium merely and causes spring to corrode, such as Spring oxidation generation oxide-film in especially dry air, and spring in non-electrolyte liquid with the liquid or the liquid In impurity chemical change etc. occurs, belong to chemical attack.When electrochemical corrosion refers to spring with electrolyte solution contacts, by Make the corrosion of spring generation in the effect of micro cell, when such as spring is with acid or salt electrolyte solution contacts, due to bullet Spring surface existing defects or impurity can form the different electrode of potential difference, make spring surface that electrolysis occur, and cause spring rotten Erosion;When and for example spring is in moist atmosphere, vapor in the atmosphere can congeal into moisture film or the globule in spring surface, and in air Corrosive gas (salt fog in sulfur dioxide and hydrogen sulfide or marine atmosphere in such as industrial waste gas) be dissolved in moisture film or Electrolyte can be formed in the globule, the impurity or defect plus spring metal form the different electrode of potential difference, will make spring Generation electrolytic etching.Spring is often corroded during manufacturing, deposit, using etc. by surrounding medium.Because spring exists It is to be played a role by elastic force during work, elastic force can change and loss of function after spring is corroded, therefore prevent spring from corroding Spring steady operation can be ensured, and extend its service life.
A kind of spring surface processing method is disclosed in the A of Chinese patent application prospectus CN 104060316, is wrapped Include following steps:Phosphatization pretreatment-originally washing-deionization washing-electrophoretic paint electrophoresis-recovery-ultrafiltrate washes-deionized water Wash-dry-baking-curing-cooling.This method is handled by carrying out phosphatization and plating paint to spring, spring is kept relatively stable Performance.
The shortcomings that prior art is present be:Spring can produce substantial amounts of hydrogen in parkerizing process, therefore after phosphatization Spring has Hydrogen Brittleness Phenomena, influences the toughness of spring;And during phosphatization, the size and finish of workpiece have shadow to the quality of spring Ring, so this surface treatment method is not particularly suited for the spring of high precision.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of technique simple, and antiseptic property is good, and Technological adaptability is stronger High precision spring surface handling process.
To realize object above, the present invention is achieved by the following technical programs:
A kind of high precision stainless steel spring process of surface treatment, step are:
(1) glazing:Spring after quenching is put into the hexagonal plating barrel equipped with brightener and coarse grained abrasive, rolls 3-5h;
(2) degreasing, descale:Spring is taken out out of hexagonal plating barrel, is put into the ultrasonic equipment added with cleaning agent The proportioning of middle cleaning, cleaning agent and running water is 1:25, scavenging period 15-30min;
(3) washing drying:It is rinsed with giant, tap water rinse is reused, is then entered with air inducing equipment Row drying;
(4) oxidation processes:Spring after drying is put into 600-650g/L sodium hydroxide and 80~120g/L nitrous In sour sodium mixed solution, solution is heated to 135-140 DEG C, is incubated, 45-60 minutes;
(5) double washings:After tap water rinse one time, reusable heat is washed one time, and hot water temperature is 90~100 DEG C, and cleaning 1~ 2 minutes;
(6) dry;
(7) plating paint:Spring is done into negative electrode, applies 70-75V voltage, electrophoresis time 45-120s, is existed using electrophoresis Spring surface forms enamelled coating, using water soluble coating, paint solution 4-5h circulation primaries,;
(8) deoil:Immersion 90-150min is carried out with gasoline, then carries out cleaning of deoiling with degreaser, is further taken out with originally Water is cleaned;
(9) drying storage.
Further, described high precision spring surface handling process, in polishing step, the volume of spring and fine grinding material Than for 1:3, the dosage of brightener is the 1%--2% of spring weight.
Further, in described high precision spring surface handling process oxidation processes, NaOH and NaNO2Ratio be 7-9:1。
Spring is subjected to upper light processing in the process of surface treatment, so that spring surface is typically bright as nickel plating According to people.In addition, oxidation processes influence less, to be more suitable for the easy winding spring of high precision compared with phosphorating treatment on the quality of spring Surface treatment, Technological adaptability is stronger.Spring aoxidizes in alkaline solution, is about 0.5~1.5um's in Surface Creation thickness Protective oxide film, the material inside spring can be effectively protected, reach oxidation resistant effect, it is high-accuracy so as to extend Spend the service life of spring.
The beneficial effects of the invention are as follows the process of surface treatment of further Optimal Spring, is allowed to be more suitable for high precision bullet The anti-corrosion of spring, present invention process is simple, and antiseptic property is good, and Technological adaptability is strong, can effectively extend making for high precision spring Use the life-span.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the implementation of the present invention Example, the technical scheme in the embodiment of the present invention is clearly and completely described.Based on the embodiment in the present invention, this area The every other embodiment that those of ordinary skill is obtained under the premise of creative work is not made, belongs to protection of the present invention Scope.
Embodiment 1:
A kind of high precision stainless steel spring process of surface treatment, step are:
(1) glazing:Spring after quenching is put into the hexagonal plating barrel equipped with brightener and coarse grained abrasive, rolls 3h, spring Volume ratio with fine grinding material is 1:3, the dosage of brightener is the 1% of spring weight;
(2) degreasing, descale:Spring is taken out out of hexagonal plating barrel, is put into the ultrasonic equipment added with cleaning agent The proportioning of middle cleaning, cleaning agent and running water is 1:25, scavenging period 15min;
(3) washing drying:It is rinsed with giant, tap water rinse is reused, is then entered with air inducing equipment Row drying;
(4) oxidation processes:The natrium nitrosum of spring after drying is put into 600g/L sodium hydroxide and 80g/L mixes molten In liquid, solution is heated to 135 DEG C, is incubated, 45 minutes NaOH and NaNO2Ratio be 7:1;
(5) double washings:After tap water rinse one time, reusable heat is washed one time, and hot water temperature is 90 DEG C, is cleaned 1 minute;
(6) dry;
(7) plating paint:Spring is done into negative electrode, applies 70V voltage, electrophoresis time 45s, using electrophoresis in spring surface Enamelled coating is formed, using water soluble coating, paint solution 4h circulation primaries, voltage is arranged to;
(8) deoil:Immersion 90min is carried out with gasoline, then carries out cleaning of deoiling with degreaser, is further taken out with originally washing Only;
(9) drying storage.
Embodiment 2:
A kind of high precision stainless steel spring process of surface treatment, step are:
(1) glazing:Spring after quenching is put into the hexagonal plating barrel equipped with brightener and coarse grained abrasive, rolls 3.5h, bullet The volume ratio of spring and fine grinding material is 1:3, the dosage of brightener is the 1.5% of spring weight;
(2) degreasing, descale:Spring is taken out out of hexagonal plating barrel, is put into the ultrasonic equipment added with cleaning agent The proportioning of middle cleaning, cleaning agent and running water is 1:25, scavenging period 20min;
(3) washing drying:It is rinsed with giant, tap water rinse is reused, is then entered with air inducing equipment Row drying;
(4) oxidation processes:The natrium nitrosum of spring after drying is put into 610g/L sodium hydroxide and 90g/L mixes molten In liquid, solution is heated to 135 DEG C, is incubated, 50 minutes, NaOH and NaNO2Ratio be 7.5:1;
(5) double washings:After tap water rinse one time, reusable heat is washed one time, and hot water temperature is 90 DEG C, is cleaned 1 minute;
(6) dry;
(7) plating paint:Spring is done into negative electrode, applies 72V voltage, electrophoresis time 60s, using electrophoresis in spring surface Enamelled coating is formed, uses water soluble coating, paint solution 4.5h circulation primaries;
(8) deoil:Immersion 100min is carried out with gasoline, then cleaning of deoiling is carried out with degreaser, further takes out and use running water Clean;
(9) drying storage.
Embodiment 3:
A kind of high precision stainless steel spring process of surface treatment, it is characterised in that step is:
(1) glazing:Spring after quenching is put into the hexagonal plating barrel equipped with brightener and coarse grained abrasive, rolls 4h, spring Volume ratio with fine grinding material is 1:3, the dosage of brightener is the 1% of spring weight;
(2) degreasing, descale:Spring is taken out out of hexagonal plating barrel, is put into the ultrasonic equipment added with cleaning agent The proportioning of middle cleaning, cleaning agent and running water is 1:25, scavenging period 25min;
(3) washing drying:It is rinsed with giant, tap water rinse is reused, is then entered with air inducing equipment Row drying;
(4) oxidation processes:The natrium nitrosum of spring after drying is put into 620g/L sodium hydroxide and 100g/L mixes In solution, solution is heated to 140 DEG C, is incubated, 50 minutes, NaOH and NaNO2Ratio be 8:1;
(5) double washings:After tap water rinse one time, reusable heat is washed one time, and hot water temperature is 100 DEG C, is cleaned 2 minutes;
(6) dry;
(7) plating paint:Spring is done into negative electrode, applies 75V voltage, electrophoresis time 80s, using electrophoresis in spring surface Enamelled coating is formed, uses water soluble coating, paint solution 5h circulation primaries;
(8) deoil:Immersion 110min is carried out with gasoline, then cleaning of deoiling is carried out with degreaser, further takes out and use running water Clean;
(9) drying storage.
Embodiment 4:
A kind of high precision stainless steel spring process of surface treatment, it is characterised in that step is:
(1) glazing:Spring after quenching is put into the hexagonal plating barrel equipped with brightener and coarse grained abrasive, rolls 4.5h, bullet The volume ratio of spring and fine grinding material is 1:3, the dosage of brightener is the 2% of spring weight;
(2) degreasing, descale:Spring is taken out out of hexagonal plating barrel, is put into the ultrasonic equipment added with cleaning agent The proportioning of middle cleaning, cleaning agent and running water is 1:25, scavenging period 30min;
(3) washing drying:It is rinsed with giant, tap water rinse is reused, is then entered with air inducing equipment Row drying;
(4) oxidation processes:The natrium nitrosum of spring after drying is put into 630g/L sodium hydroxide and 110g/L mixes In solution, solution is heated to 135 DEG C, is incubated 55 minutes, NaOH and NaNO2Ratio be 9:1;
(5) double washings:After tap water rinse one time, reusable heat is washed one time, and hot water temperature is 100 DEG C, is cleaned 2 minutes;
(6) dry;
(7) plating paint:Spring is done into negative electrode, applies 70V voltage, electrophoresis time 90s, using electrophoresis in spring surface Enamelled coating is formed, uses water soluble coating, paint solution 5h circulation primaries;
(8) deoil:Immersion 120min is carried out with gasoline, then cleaning of deoiling is carried out with degreaser, further takes out and use running water Clean;
(9) drying storage.
Embodiment 5:
A kind of high precision spring surface handling process, it is characterised in that step is:
(1) glazing:Spring after quenching is put into the hexagonal plating barrel equipped with brightener and coarse grained abrasive, rolls 5h, spring Volume ratio with fine grinding material is 1:3, the dosage of brightener is the 2% of spring weight;
(2) degreasing, descale:Spring is taken out out of hexagonal plating barrel, is put into the ultrasonic equipment added with cleaning agent The proportioning of middle cleaning, cleaning agent and running water is 1:25, scavenging period 30min;
(3) washing drying:It is rinsed with giant, tap water rinse is reused, is then entered with air inducing equipment Row drying;
(4) oxidation processes:The natrium nitrosum of spring after drying is put into 650g/L sodium hydroxide and 120g/L mixes In solution, solution is heated to 140 DEG C, is incubated, 60 minutes, NaOH and NaNO2Ratio be 9:1;
(5) double washings:After tap water rinse one time, reusable heat is washed one time, and hot water temperature is 100 DEG C, is cleaned 2 minutes;
(6) dry;
(7) plating paint:Spring is done into negative electrode, applies 75V voltage, electrophoresis time 120s, using electrophoresis in spring table Face forms enamelled coating, uses water soluble coating, paint solution 5h circulation primaries;
(8) deoil:Immersion 150min is carried out with gasoline, then cleaning of deoiling is carried out with degreaser, further takes out and use running water Clean;
(9) drying storage.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although with reference to the foregoing embodiments The present invention is described in detail, it will be understood by those within the art that:It still can be to foregoing each implementation Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic;And these modification or Replace, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (3)

1. a kind of high precision spring surface handling process, it is characterised in that step is:
(1) glazing:Spring after quenching is put into the hexagonal plating barrel equipped with brightener and coarse grained abrasive, rolls 3-5h;
(2) degreasing, descale:Spring is taken out out of hexagonal plating barrel, is put into the ultrasonic equipment added with cleaning agent clear Wash, the proportioning of cleaning agent and running water is 1:25, scavenging period 15-30min;
(3) washing drying:It is rinsed with giant, tap water rinse is reused, is then blown with air inducing equipment It is dry;
(4) oxidation processes:Spring after drying is put into 600-650g/L sodium hydroxide and 80~120g/L natrium nitrosum In mixed solution, solution is heated to 135-140 DEG C, is incubated, 45-60 minutes;
(5) double washings:After tap water rinse one time, reusable heat is washed one time, and hot water temperature is 90~100 DEG C, cleans 1~2 point Clock;
(6) dry;
(7) plating paint:Spring is done into negative electrode, applies 70-75V voltage, electrophoresis time 45-120s, using electrophoresis in spring Surface forms enamelled coating, uses water soluble coating, paint solution 4-5h circulation primaries;
(8) deoil:Immersion 90-150min is carried out with gasoline, then carries out cleaning of deoiling with degreaser, is further taken out with originally washing Only;
(9) drying storage.
A kind of 2. high precision spring surface handling process as claimed in claim 1, it is characterised in that spring in step (1) Volume ratio with coarse grained abrasive is 1:3, the dosage of brightener is the 1%-2% of spring weight.
A kind of 3. high precision spring surface handling process as claimed in claim 1, it is characterised in that in step (4), NaOH With NaNO2Ratio be 7-9:1.
CN201610530692.XA 2016-07-06 2016-07-06 A kind of high precision spring surface handling process Active CN106011976B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610530692.XA CN106011976B (en) 2016-07-06 2016-07-06 A kind of high precision spring surface handling process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610530692.XA CN106011976B (en) 2016-07-06 2016-07-06 A kind of high precision spring surface handling process

Publications (2)

Publication Number Publication Date
CN106011976A CN106011976A (en) 2016-10-12
CN106011976B true CN106011976B (en) 2018-01-05

Family

ID=57107476

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610530692.XA Active CN106011976B (en) 2016-07-06 2016-07-06 A kind of high precision spring surface handling process

Country Status (1)

Country Link
CN (1) CN106011976B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106736302A (en) * 2017-01-19 2017-05-31 浙江金昌弹簧有限公司 A kind of spring production process
CN108392016B (en) * 2018-03-02 2020-12-04 南京林业大学 Health-care sofa cushion with adjustable hardness and preparation method thereof
CN108754476A (en) * 2018-08-06 2018-11-06 苏州捷捷威自动化装备有限公司 A kind of numerical control cutting machine height-regulating device spring surface treatment process
CN109732457B (en) * 2018-12-28 2020-11-06 华讯方舟科技有限公司 Cleaning method for plastic color mixer

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101831684A (en) * 2010-05-28 2010-09-15 河海大学常州校区 Microarc-oxidation electrophoretic-coating composite processing method of surface of Q 235 steel part
CN103243372A (en) * 2013-04-24 2013-08-14 常熟市长发铝业有限公司 Electrophoresis film-painting method
CN104060316A (en) * 2014-05-26 2014-09-24 安徽红桥金属制造有限公司 Surface treatment method for spring
CN104278306A (en) * 2014-09-26 2015-01-14 无锡市天力五金弹簧厂 Surface treatment process for spring
WO2015089827A1 (en) * 2013-12-20 2015-06-25 邓志刚 Method and system for lacquering outer tube of rod core of gas spring
CN103352217B (en) * 2013-06-21 2016-01-20 安徽省六安市朝晖机械制造有限公司 Turn blue anti-corrosion treatment process for a kind of surface of workpiece

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101831684A (en) * 2010-05-28 2010-09-15 河海大学常州校区 Microarc-oxidation electrophoretic-coating composite processing method of surface of Q 235 steel part
CN103243372A (en) * 2013-04-24 2013-08-14 常熟市长发铝业有限公司 Electrophoresis film-painting method
CN103352217B (en) * 2013-06-21 2016-01-20 安徽省六安市朝晖机械制造有限公司 Turn blue anti-corrosion treatment process for a kind of surface of workpiece
WO2015089827A1 (en) * 2013-12-20 2015-06-25 邓志刚 Method and system for lacquering outer tube of rod core of gas spring
CN104060316A (en) * 2014-05-26 2014-09-24 安徽红桥金属制造有限公司 Surface treatment method for spring
CN104278306A (en) * 2014-09-26 2015-01-14 无锡市天力五金弹簧厂 Surface treatment process for spring

Also Published As

Publication number Publication date
CN106011976A (en) 2016-10-12

Similar Documents

Publication Publication Date Title
CN106011976B (en) A kind of high precision spring surface handling process
CN106086901B (en) A kind of component of machine process of surface treatment
CN108149179B (en) Hot galvanizing production process for fastener
CA3043486C (en) Method for electroplating an uncoated steel strip with a plating layer
CN107245732B (en) A method of high-strength corrosion-resisting cadmium tin titanium alloy being electroplated in 304 or 316L stainless steel surface
CN102634784B (en) Surface treatment method of nuclear bridge
CN104032352A (en) Aluminum Component Repairing Method, Repairing Liquid, Aluminum Material And Manufacturing Method Of The Aluminum Material
CN109666925B (en) Super-hydrophobic manganese dioxide coating on surface of metal material and preparation method thereof
WO2017197734A1 (en) Long-term anti-corrosion method for power transmission tower
CN109056032A (en) Titanium alloy nigrescence anode oxidation process
CN108165957A (en) Aluminum alloy material surface chemical nickel plating method
CN104060316A (en) Surface treatment method for spring
CN110565148B (en) Magnesium alloy black micro-arc oxidation film nano passivator and passivation method
CN107740022B (en) A kind of hot-dip aluminum zinc magnesium alloy fluxing agent
CN102786861B (en) Anticorrosive and antirust nanometer fiber paint for containers, method for preparing and spraying paint
CN108707933B (en) Zinc plating solution for super-hydrophobic galvanized carbon steel and preparation method thereof
CN105522240A (en) Treatment and machining process for steel piece casting and rust and corrosion prevention
CN105951080B (en) Aluminum alloy surface composite passivant and preparation method thereof
CN104520473A (en) High-speed pickling process for manufacturing austenitic stainless cold-rolled steel plate
CN109385649A (en) A kind of crisp acid cyanideless electro-plating zinc technology method of low hydrogen
CN109023336A (en) A kind of environment-friendly type rare-earth salts color passivation solution and preparation method thereof
CN107675193A (en) A kind of raw material of aluminum alloy preprocess method
CN102242367B (en) Multifunctional novel ethylene diamine tetraacetic acid (EDTA) cleaning corrosion inhibitor
CN111850632A (en) Activating solution and zinc-nickel electroplating process using same
KR20040001301A (en) Method for plating with molten aluminum

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant