CN109536861A - A kind of preparation method of tin plating PHOSPHATE BRONZE WIRE - Google Patents
A kind of preparation method of tin plating PHOSPHATE BRONZE WIRE Download PDFInfo
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- CN109536861A CN109536861A CN201910035122.7A CN201910035122A CN109536861A CN 109536861 A CN109536861 A CN 109536861A CN 201910035122 A CN201910035122 A CN 201910035122A CN 109536861 A CN109536861 A CN 109536861A
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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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/1803—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces
- C23C18/1824—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces by chemical pretreatment
- C23C18/1837—Multistep pretreatment
- C23C18/1844—Multistep pretreatment with use of organic or inorganic compounds other than metals, first
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
- C23C18/34—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents
- C23C18/36—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents using hypophosphites
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/52—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating using reducing agents for coating with metallic material not provided for in a single one of groups C23C18/32 - C23C18/50
-
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F17/00—Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25
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- Metallurgy (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemically Coating (AREA)
Abstract
A kind of preparation method of tin plating PHOSPHATE BRONZE WIRE, including process flow are as follows: -- zinc-nickel preplating-chemical nickel plating-chemical plating stannum-neutralisation treatment-drying-finished product is moved back in wire drawing-annealing-leaching zinc-for pretreatment.The present invention is designed by optimization preparation process using dip galvanizing technique, and the oxidation film layer of removal product surface may be implemented, and can form the zinc film of even compact, makes surface zinc film layer more uniformly fine and close using quickly zinc is moved back；In conjunction with nickel preplating; especially with alkaline chemical nickel-plating pre-plating process; it can be poisoned to avoid because of zinc film layer by acid chemical plating nickel liquid; lead to the use for shortening chemical nickel-plating liquid; effectively inhibit the dissolution of zinc film layer; thin and careful, uniform nickel coating can be obtained to protect zinc film layer, while being also convenient for subsequent chemistry nickel plating processing, be conducive to improve nickel plating associativity；Optimize tin plating technique, adds compound additive, the crystallization of tin coating can be made more careful, the tin coating of readily available light.
Description
Technical field
The present invention relates to tin plated materials technical fields, and in particular to a kind of preparation method of tin plating PHOSPHATE BRONZE WIRE.
Background technique
At present used in conducting wire, be all it is centrally disposed by a pure copper wire, outside be surrounded by insulating layer.And for carrying
The big conducting wire of flow, conductor are the flows for combining and increasing electric current by strand copper wire coil buckling, which cannot play most
The flow of big unit section, because electric current is all to be easy to flow through from the outer surface of conductor, central part flow very little, such conducting wire
Structure do not meet the law of nature of electric current kelvin effect.
In addition, the fine copper conducting wire used in daily life, surface is oxidizable under conditions of high temperature, make its resistance it is small,
Electric current is big, and safety is not high, cannot bear high temperature.Because the performances such as existing product corrosion resistance, uniformity, high temperature resistant are not achieved
The disadvantages of requirement of special electric product, leads to the damage of part electronics industry, electrical equipment, service life reduction etc. in use
Phenomenon causes difficult and economic loss to manufacturing enterprise.
For this purpose, using more tinned wird, nickel plated copper wire or tin plating nickel plated copper wire now, material can be increased with this
Service performance, increase heat-resisting quantity, corrosion resistance etc..However, traditional tinned wird, nickel plated copper wire or tin plating nickel plated copper wire
Processing technology is more single, and the associativity of tin coating or nickel coating is poor, surface brightness is insufficient, and there is also coating crystallizations
The defects of particle is larger, lack of uniformity.
Summary of the invention
To solve the above problems, the present invention provides a kind of preparation method of tin plating PHOSPHATE BRONZE WIRE, the good, light with uniformity
The strong feature of good brightness, binding force.
To achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of preparation method of tin plating PHOSPHATE BRONZE WIRE, including tin plating PHOSPHATE BRONZE WIRE, comprising the following steps: S1, pretreatment, by technique
Specification chooses PHOSPHATE BRONZE WIRE ontology, carries out pre-detection processing to PHOSPHATE BRONZE WIRE ontology；PHOSPHATE BRONZE WIRE ontology is put by S11, alkali cleaning
Alkali cleaning is carried out into soda-wash solution, however is cleaned with clear water, and PHOSPHATE BRONZE WIRE ontology is detected；S12, pickling, by PHOSPHATE BRONZE WIRE
Ontology, which is put into pickling solution, carries out pickling, however is cleaned with clear water, and PHOSPHATE BRONZE WIRE ontology is detected；S2, annealing are used
Continuous annealing wire drawing machine completes wire drawing and annealing process；S3, leaching zinc, PHOSPHATE BRONZE WIRE ontology is immersed in zincate solution, is obtained in level-one
Between product；S4, zinc is moved back, the immersion of level-one raw material is moved back in zinc liquid, product among second level are obtained；S5, nickel preplating pass through product among second level
Alkaline chemical nickel-plating liquid completes nickel preplating processing, is rinsed after completing nickel preplating with clear water, obtains product among three-level；S6, chemical plating
Product among three-level are completed Nickel Plating Treatment by chemical nickel-plating liquid, use pure water rinsing after completing nickel plating, obtain among level Four by nickel
Product；Product among level Four are completed tin plating processing by chemical tin plating liquor, are rinsed, obtained with clear water after completion is tin plating by S7, chemical plating stannum
Obtain product among Pyatyi；Product among Pyatyi are passed through in neutralizer and complete neutralisation treatment, then rinsed with clear water by S8, neutralisation treatment,
Obtain six grades of intermediate product；S9, eventually processing import drying in temperature control pipeline, obtain after handling six grades of intermediate product by hot water injection
Obtain finished product.
In step S3, zincate solution is made of the mixed liquor of zinc sulfate, hydrofluoric acid and distilled water.
Zinc sulfate dosage is 8 ~ 12g/L, and hydrofluoric acid dosage is 70 ~ 80ml/L, and surplus is distilled water.
It in step S4, moves back zinc liquid and is made of nitric acid solution, moving back the zinc time is 5 ~ 15s.
Nitric acid solution uses nitric acid and distilled water mass ratio 1:1.
In step S5, alkaline chemical nickel-plating liquid uses nickel sulfate, sodium hypophosphite, ammonium citrate and ammonium chloride mixed liquor, PH
It is 8 ~ 10, temperature is 40 ~ 50 DEG C, and the time is 4 ~ 8min.
In step S6, chemical nickel-plating liquid uses nickel sulfate, sodium hypophosphite, sodium citrate, lead acetate and 88% lactic acid mixed liquor
It is made, PH is 4 ~ 5, and temperature is 85 ~ 95 DEG C, and the time is 75min ~ 100min.
In step S7, chemical tin plating liquor is made of the mixed liquor of tin methane sulfonate, methane sulfonic acid, compound additive, electricity
5 ~ 8A/dm2 of current density, 25 ~ 35 DEG C of temperature, 20 ~ 30min of time.
Compound additive includes phenol antioxidant, brightener, activating agent.
In step S8, neutralizer uses sodium radio-phosphate,P-32 solution, and temperature is 70 ~ 80 DEG C, and concentration is 5% ~ 10%.
The invention has the following advantages: the present invention is designed, Ke Yishi by optimization preparation process using dip galvanizing technique
The oxidation film layer of product surface is now removed, and the zinc film of even compact can be formed, using quickly moving back zinc makes surface zinc film layer
It is more uniformly fine and close；In conjunction with nickel preplating, especially with alkaline chemical nickel-plating pre-plating process, can to avoid because zinc film layer it is acid
Chemical nickel-plating liquid is poisoned, and is led to the use for shortening chemical nickel-plating liquid, is effectively inhibited the dissolution of zinc film layer, can obtain Bao Erxi
Cause, uniform nickel coating are also convenient for subsequent chemistry nickel plating processing to protect zinc film layer, are conducive to improve nickel plating combination
Property；Optimize tin plating technique, adds compound additive, the crystallization of tin coating can be made more careful, it is readily available bright tin plating
Layer.
The features of the present invention sees this case or less preferably detailed description of embodiment and is well understood.
Specific embodiment
In order to which objects and advantages of the present invention are more clearly understood, the present invention is carried out with reference to embodiments further
It is described in detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit this hair
It is bright.
Embodiment 1
The invention discloses a kind of preparation methods of tin plating PHOSPHATE BRONZE WIRE, including tin plating PHOSPHATE BRONZE WIRE, comprising the following steps:
S1, pretreatment choose PHOSPHATE BRONZE WIRE ontology by process specification, carry out pre-detection processing to PHOSPHATE BRONZE WIRE ontology, examine in advance
Survey whether surface have damage, spot, rusty stain etc.；PHOSPHATE BRONZE WIRE ontology is put into soda-wash solution and carries out alkali cleaning by S11, alkali cleaning,
However cleaned with clear water, PHOSPHATE BRONZE WIRE ontology is detected, surface and oil contaminant is removed；PHOSPHATE BRONZE WIRE ontology is put by S12, pickling
Pickling is carried out into pickling solution, however is cleaned with clear water, is detected PHOSPHATE BRONZE WIRE ontology, is removed skim-coat rust staining, oxide layer
Deng.
S2, annealing complete wire drawing and annealing process using continuous annealing wire drawing machine, existing common process are selected to carry out at wire drawing
Reason, and annealing is combined to complete destressing, stable dimensions.
S3, leaching zinc, PHOSPHATE BRONZE WIRE ontology is immersed in zincate solution, obtains product among level-one, and zincate solution uses zinc sulfate, hydrogen
The mixed liquor of fluoric acid and distilled water is made, and zinc sulfate dosage is 10g/L, and hydrofluoric acid dosage is 75ml/L, and surplus is distilled water；It adopts
It is designed with dip galvanizing technique, the oxidation film layer of removal product surface may be implemented, and the zinc film of even compact can be formed.
S4, zinc is moved back, the immersion of level-one raw material is moved back in zinc liquid, product among second level is obtained, moves back zinc liquid and be made of nitric acid solution,
Moving back the zinc time is 10s, and nitric acid solution uses nitric acid and distilled water mass ratio 1:1, moves back zinc needs and is rapidly completed, and moves back zinc using quick
So that surface zinc film layer is more uniformly fine and close.
Product among second level are completed nickel preplating processing by alkaline chemical nickel-plating liquid, used after completing nickel preplating by S5, nickel preplating
Clear water rinses, and obtains product among three-level, and alkaline chemical nickel-plating liquid uses nickel sulfate, sodium hypophosphite, ammonium citrate and ammonium chloride
Mixed liquor, PH 9, temperature are 45 DEG C, time 5min, and nickel sulfate dosage is 30g/L, sodium hypophosphite dosage is 30g/L, lemon
Lemon acid sodium dosage is 15g/L, ammonium chloride dosage is 30g/L, and pre-nickel plating is relatively thin, is 0.5 μ m thick；Use alkaline electroless plating
Nickel pre-plating process can be poisoned to avoid because of zinc film layer by acid chemical plating nickel liquid, lead to the use for shortening chemical nickel-plating liquid, have
Effect inhibits the dissolution of zinc film layer, can obtain thin and careful, uniform nickel coating to protect zinc film layer, while being also convenient for subsequent
Chemical nickel plating processing is conducive to improve nickel plating associativity.
Product among three-level are completed Nickel Plating Treatment by chemical nickel-plating liquid, are rushed after completing nickel plating with pure water by S6, chemical nickel plating
It washes, obtains product among level Four, chemical nickel-plating liquid is using nickel sulfate, sodium hypophosphite, sodium citrate, lead acetate and the mixing of 88% lactic acid
Liquid is made, PH 4.8, temperature be 90 DEG C, time 90min, nickel sulfate dosage is 30g/L, sodium hypophosphite dosage be 30g/L,
Sodium citrate dosage is 38g/L, lead acetate dosage is 1mg/L and 88% lactic acid dosage is 5.7ml/L, the chemical plating in this step
Nickel technique is designed using common process, is existing conventional process.
Product among level Four are completed tin plating processing by chemical tin plating liquor, are rushed after completion is tin plating with clear water by S7, chemical plating stannum
It washes, obtains product among Pyatyi, chemical tin plating liquor uses the mixed liquor system of tin methane sulfonate, methane sulfonic acid, formaldehyde, compound additive
At 5 ~ 8A/dm2 of current density, 25 ~ 35 DEG C of temperature, 20 ~ 30min of time, compound additive includes phenol antioxidant, light
Agent, activating agent are specifically as follows polyethylene glycol, the phenolphthalein that volume fraction is 1%, thiocarbamide, thiosinamine, OP emulsifier, thiocarbamide
Derivative, 2- sulfydryl be stupid and imidazoles, to stupid diphenol, resorcinol, dodecyl sodium sulfate etc.；In this step, using methyl sulphur
Sour tin dosage is 8ml/L, methane sulfonic acid dosage is that 100ml/L, 2- sulfydryl are stupid and imidazoles dosage is 1.6g/L, OP emulsifier
It is 1ml/L for 1ml/L, the phenolphthalein dosage that resorcinol dosage is 1g/L, volume fraction is 1%；Optimize tin plating technique, adds multiple
Additive is closed, the crystallization of tin coating can be made more careful, the tin coating of readily available light.
Then S8, neutralisation treatment are rinsed with clear water, are obtained by product among Pyatyi by completing neutralisation treatment in neutralizer
Six grades of intermediate product, wherein neutralizer uses sodium radio-phosphate,P-32 solution, and temperature is 70 ~ 80 DEG C, and concentration is 5% ~ 10%.
S9, eventually processing import drying in temperature control pipeline, obtain finished product after handling six grades of intermediate product by hot water injection.
Embodiment 2
The invention discloses a kind of preparation methods of tin plating PHOSPHATE BRONZE WIRE, including tin plating PHOSPHATE BRONZE WIRE, comprising the following steps:
S1, pretreatment choose PHOSPHATE BRONZE WIRE ontology by process specification, carry out pre-detection processing to PHOSPHATE BRONZE WIRE ontology, examine in advance
Survey whether surface have damage, spot, rusty stain etc.；PHOSPHATE BRONZE WIRE ontology is put into soda-wash solution and carries out alkali cleaning by S11, alkali cleaning,
However cleaned with clear water, PHOSPHATE BRONZE WIRE ontology is detected, surface and oil contaminant is removed；PHOSPHATE BRONZE WIRE ontology is put by S12, pickling
Pickling is carried out into pickling solution, however is cleaned with clear water, is detected PHOSPHATE BRONZE WIRE ontology, is removed skim-coat rust staining, oxide layer
Deng.
S2, annealing complete wire drawing and annealing process using continuous annealing wire drawing machine, existing common process are selected to carry out at wire drawing
Reason, and annealing is combined to complete destressing, stable dimensions.
S3, leaching zinc, PHOSPHATE BRONZE WIRE ontology is immersed in zincate solution, obtains product among level-one, and zincate solution uses zinc sulfate, hydrogen
The mixed liquor of fluoric acid and distilled water is made, and zinc sulfate dosage is 10g/L, and hydrofluoric acid dosage is 75ml/L, and surplus is distilled water；It adopts
It is designed with dip galvanizing technique, the oxidation film layer of removal product surface may be implemented, and the zinc film of even compact can be formed.
S4, zinc is moved back, the immersion of level-one raw material is moved back in zinc liquid, product among second level is obtained, moves back zinc liquid and be made of nitric acid solution,
Moving back the zinc time is 15s, and nitric acid solution uses nitric acid and distilled water mass ratio 1:1, moves back zinc needs and is rapidly completed, and moves back zinc using quick
So that surface zinc film layer is more uniformly fine and close.
Product among second level are completed nickel preplating processing by alkaline chemical nickel-plating liquid, used after completing nickel preplating by S5, nickel preplating
Clear water rinses, and obtains product among three-level, and alkaline chemical nickel-plating liquid uses nickel sulfate, sodium hypophosphite, ammonium citrate and ammonium chloride
Mixed liquor, PH 8.5, temperature be 45 DEG C, time 6min, nickel sulfate dosage is 28g/L, sodium hypophosphite dosage be 28g/L,
Sodium citrate dosage is 12g/L, ammonium chloride dosage is 25g/L, and pre-nickel plating is relatively thin, is 0.5 μ m thick；Use alkali electroless
Nickel plating pre-plating process can be poisoned to avoid because of zinc film layer by acid chemical plating nickel liquid, and the use for shortening chemical nickel-plating liquid is caused,
The dissolution for effectively inhibiting zinc film layer, can obtain thin and careful, uniform nickel coating to protect zinc film layer, while after being also convenient for
Continuous chemical nickel plating processing, is conducive to improve nickel plating associativity.
Product among three-level are completed Nickel Plating Treatment by chemical nickel-plating liquid, are rushed after completing nickel plating with pure water by S6, chemical nickel plating
It washes, obtains product among level Four, chemical nickel-plating liquid is using nickel sulfate, sodium hypophosphite, sodium citrate, lead acetate and the mixing of 88% lactic acid
Liquid is made, PH 4.8, temperature be 90 DEG C, time 100min, nickel sulfate dosage is 30g/L, sodium hypophosphite dosage be 30g/L,
Sodium citrate dosage is 38g/L, lead acetate dosage is 1mg/L and 88% lactic acid dosage is 5.7ml/L, the chemical plating in this step
Nickel technique is designed using common process, is existing conventional process.
Product among level Four are completed tin plating processing by chemical tin plating liquor, are rushed after completion is tin plating with clear water by S7, chemical plating stannum
It washes, obtains product among Pyatyi, chemical tin plating liquor uses the mixed liquor system of tin methane sulfonate, methane sulfonic acid, formaldehyde, compound additive
At 5 ~ 8A/dm2 of current density, 25 ~ 35 DEG C of temperature, 20 ~ 30min of time, compound additive includes phenol antioxidant, light
Agent, activating agent, in this step, using tin methane sulfonate dosage for 8ml/L, methane sulfonic acid dosage is that 100ml/L, 2- sulfydryl are stupid simultaneously
Imidazoles dosage is that the phenolphthalein that 1.6g/L, OP emulsifier are 1ml/L, resorcinol dosage is 1g/L, volume fraction is 1% is used
Amount is 1ml/L；Optimize tin plating technique, adds compound additive, the crystallization of tin coating can be made more careful, readily available light
Tin coating.
Then S8, neutralisation treatment are rinsed with clear water, are obtained by product among Pyatyi by completing neutralisation treatment in neutralizer
Six grades of intermediate product, wherein neutralizer uses sodium radio-phosphate,P-32 solution, and temperature is 75 DEG C, concentration 8%.
S9, eventually processing import drying in temperature control pipeline, obtain finished product after handling six grades of intermediate product by hot water injection.
Process flow of the invention are as follows: zinc-nickel preplating-chemistry is moved back in pretreatment (alkali cleaning-pickling)-wire drawing-annealing-leaching zinc-
Nickel plating-chemical plating stannum-neutralisation treatment-drying-finished product.
Wherein pretreatment, wire drawing, annealing, chemical nickel plating, neutralisation treatment, drying and processing are all made of conventional work in the prior art
Skill selection.
The present invention is designed by optimization preparation process using dip galvanizing technique, and the oxidation film of removal product surface may be implemented
Layer, and the zinc film of even compact can be formed, make surface zinc film layer more uniformly fine and close using quickly zinc is moved back；In conjunction with preplating
Nickel can be poisoned by acid chemical plating nickel liquid to avoid because of zinc film layer, be caused especially with alkaline chemical nickel-plating pre-plating process
Shorten the use of chemical nickel-plating liquid, effectively inhibits the dissolution of zinc film layer, thin and careful, uniform nickel coating can be obtained to protect
Zinc film layer is protected, while being also convenient for subsequent chemistry nickel plating processing, is conducive to improve nickel plating associativity；Optimize tin plating technique, adds multiple
Additive is closed, the crystallization of tin coating can be made more careful, in addition the tin coating of readily available light is the purpose of compound additive
To stablize tin ion, under the crystallization excitation for not changing tin, the careful property of crystallization can be improved.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, it can also make several improvements and retouch, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of preparation method of tin plating PHOSPHATE BRONZE WIRE, including tin plating PHOSPHATE BRONZE WIRE, which comprises the following steps:
S1, pretreatment, choose PHOSPHATE BRONZE WIRE ontology by process specification, carry out pre-detection processing to PHOSPHATE BRONZE WIRE ontology；
PHOSPHATE BRONZE WIRE ontology is put into soda-wash solution and carries out alkali cleaning, however cleaned with clear water by S11, alkali cleaning, detects phosphorus
Bronze wire ontology；
PHOSPHATE BRONZE WIRE ontology is put into pickling solution and carries out pickling, however cleaned with clear water by S12, pickling, detects phosphorus
Bronze wire ontology；
S2, annealing complete wire drawing and annealing process using continuous annealing wire drawing machine；
S3, leaching zinc, PHOSPHATE BRONZE WIRE ontology is immersed in zincate solution, product among level-one are obtained；
S4, zinc is moved back, the immersion of level-one raw material is moved back in zinc liquid, product among second level are obtained；
Product among second level are completed nickel preplating processing by alkaline chemical nickel-plating liquid, use clear water after completing nickel preplating by S5, nickel preplating
It rinses, obtains product among three-level；
Product among three-level are completed Nickel Plating Treatment by chemical nickel-plating liquid, use pure water rinsing after completing nickel plating by S6, chemical nickel plating,
Obtain product among level Four；
Product among level Four are completed tin plating processing by chemical tin plating liquor, are rinsed after completion is tin plating with clear water by S7, chemical plating stannum,
Obtain product among Pyatyi；
Then S8, neutralisation treatment are rinsed with clear water by product among Pyatyi by completing neutralisation treatment in neutralizer, obtain six grades
Intermediate product；
S9, eventually processing import drying in temperature control pipeline, obtain finished product after handling six grades of intermediate product by hot water injection.
2. a kind of preparation method of tin plating PHOSPHATE BRONZE WIRE according to claim 1, it is characterised in that: in step S3, soak zinc
Liquid is made of the mixed liquor of zinc sulfate, hydrofluoric acid and distilled water.
3. a kind of preparation method of tin plating PHOSPHATE BRONZE WIRE according to claim 2, it is characterised in that: zinc sulfate dosage be 8 ~
12g/L, hydrofluoric acid dosage are 70 ~ 80ml/L, and surplus is distilled water.
4. a kind of preparation method of tin plating PHOSPHATE BRONZE WIRE according to claim 1, it is characterised in that: in step S4, move back zinc
Liquid is made of nitric acid solution, and moving back the zinc time is 5 ~ 15s.
5. a kind of preparation method of tin plating PHOSPHATE BRONZE WIRE according to claim 4, it is characterised in that: nitric acid solution uses nitre
Acid and distilled water mass ratio 1:1.
6. a kind of preparation method of tin plating PHOSPHATE BRONZE WIRE according to claim 1, it is characterised in that: in step S5, alkalinity
Chemical nickel-plating liquid uses nickel sulfate, sodium hypophosphite, ammonium citrate and ammonium chloride mixed liquor, and PH is 8 ~ 10, and temperature is 40 ~ 50
DEG C, the time is 4 ~ 8min.
7. a kind of preparation method of tin plating PHOSPHATE BRONZE WIRE according to claim 1, it is characterised in that: in step S6, chemistry
Nickel-plating liquid is made of nickel sulfate, sodium hypophosphite, sodium citrate, lead acetate and 88% lactic acid mixed liquor, and PH is 4 ~ 5, temperature 85
~ 95 DEG C, the time is 75min ~ 100min.
8. a kind of preparation method of tin plating PHOSPHATE BRONZE WIRE according to claim 1, it is characterised in that: in step S7, chemistry
Tin plating electrolyte is made of the mixed liquor of tin methane sulfonate, methane sulfonic acid, compound additive, 5 ~ 8A/dm2 of current density, and temperature 25 ~
35 DEG C, 20 ~ 30min of time.
9. a kind of preparation method of tin plating PHOSPHATE BRONZE WIRE according to claim 8, it is characterised in that: compound additive includes
Phenol antioxidant, brightener, activating agent.
10. a kind of preparation method of tin plating PHOSPHATE BRONZE WIRE according to claim 1, it is characterised in that: in step S8, neutralize
Liquid uses sodium radio-phosphate,P-32 solution, and temperature is 70 ~ 80 DEG C, and concentration is 5% ~ 10%.
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| CN110607468A (en) * | 2019-09-06 | 2019-12-24 | 安徽广宇电子材料有限公司 | Production process method of copper-tin alloy bonding wire |
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