CN108526647A - Receive tin piece and preparation method thereof - Google Patents
Receive tin piece and preparation method thereof Download PDFInfo
- Publication number
- CN108526647A CN108526647A CN201710126766.8A CN201710126766A CN108526647A CN 108526647 A CN108526647 A CN 108526647A CN 201710126766 A CN201710126766 A CN 201710126766A CN 108526647 A CN108526647 A CN 108526647A
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- China
- Prior art keywords
- tin piece
- immersion plating
- production method
- substrate
- tin
- Prior art date
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 125
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 238000007747 plating Methods 0.000 claims abstract description 89
- 238000007654 immersion Methods 0.000 claims abstract description 78
- 239000000758 substrate Substances 0.000 claims abstract description 70
- 238000004519 manufacturing process Methods 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 26
- 230000008569 process Effects 0.000 claims abstract description 22
- 239000012190 activator Substances 0.000 claims abstract description 15
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims abstract description 7
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims abstract description 7
- QCEUXSAXTBNJGO-UHFFFAOYSA-N [Ag].[Sn] Chemical compound [Ag].[Sn] QCEUXSAXTBNJGO-UHFFFAOYSA-N 0.000 claims abstract description 7
- PQIJHIWFHSVPMH-UHFFFAOYSA-N [Cu].[Ag].[Sn] Chemical compound [Cu].[Ag].[Sn] PQIJHIWFHSVPMH-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910000969 tin-silver-copper Inorganic materials 0.000 claims abstract description 7
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000004913 activation Effects 0.000 claims description 8
- 230000003746 surface roughness Effects 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 abstract description 23
- 238000000576 coating method Methods 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 13
- 238000007254 oxidation reaction Methods 0.000 abstract description 10
- 239000002440 industrial waste Substances 0.000 abstract description 4
- 238000003466 welding Methods 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 238000005498 polishing Methods 0.000 description 6
- 229910000679 solder Inorganic materials 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 238000009713 electroplating Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005253 cladding Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- BUNLVUUEJMMUNW-UHFFFAOYSA-N [Ag].[Sn].[Sn] Chemical compound [Ag].[Sn].[Sn] BUNLVUUEJMMUNW-UHFFFAOYSA-N 0.000 description 1
- ILWSXRPSPOSQNA-UHFFFAOYSA-N [Sn].[Cu].[Ag].[Sn] Chemical compound [Sn].[Cu].[Ag].[Sn] ILWSXRPSPOSQNA-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroplating Methods And Accessories (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Chemically Coating (AREA)
Abstract
The present invention provides a kind of receipts tin piece and preparation method thereof, the receipts tin piece includes substrate, multiple active layers, multiple immersion plating layers, wherein is alternatively formed the active layer and the immersion plating layer successively in the substrate outer surface, outermost layer is immersion plating layer.Steps are as follows for the receipts tin piece production method：Substrate, that is, mild steel first derusts, and is then immersed in activator i.e. scaling powder rosin, then immerses in immersion plating material i.e. tin silver copper or tin silver, immerses in scaling powder and immersion plating material repeatedly and reaches mirror effect until receiving tin piece surface, generally requires progress 5 to 10 times.Receipts tin piece smooth surface in the present invention, it is not easy to high-temperature oxydation and cause even weld, coating is thicker, stronger with substrate binding force, and wellability is not easy to fail, and service life is long.Receipts tin piece production method in the present invention, simple process and low cost is honest and clean, and the process time only needs several hours, and industrial waste will not be caused to pollute.
Description
Technical field
The present invention relates to electric PC board welding technology field, more particularly to a kind of receipts tin piece and preparation method thereof.
Background technology
Through-hole component is welded in large-scale industry manufacturing industry, mainly using several welding such as wave-soldering and selection weldering
Technology.
Wave-soldering has many advantages, such as that production efficiency height and yield are big in the manufacture of through-hole component circuit board, therefore once
It is most important welding equipment during electronic product automation is produced in enormous quantities.But there is also have certain office in its application
It is sex-limited：Different solder joints on same wiring board are because of its characteristic difference (such as thermal capacity, pin spacing, the requirement of saturating tin), institute
The welding parameter needed may be far from each other, this makes the more difficult welding requirements for fully meeting high-quality wiring board of wave-soldering.
When being welded due to the use of selection, the welding parameter of each solder joint " can customize ", have enough
Technique adjustment space the welding parameter of each solder joint (quantity for spray, weld interval, welding crest height of scaling powder etc.) is adjusted
To best, thus ratio of defects reduces, it could even be possible to accomplishing the zero-fault welding of through-hole component.
In multiinjector selects Welding, the surface quality for receiving tin piece has a significant impact to the welding quality of selection weldering,
The unleaded selection weldering of close pin element is extremely sensitive to the wellability for receiving tin piece surface, receive tin piece surface high-temperature oxydation pollution or
The tin that wellability decline directly results in large-tonnage product successively loses effect.In order to obtain the good wellability to tin liquor, receives tin piece and usually adopt
It is surface-treated with electroplating technology, electroplating technology is to plate the other gold of a thin layer on certain metal surfaces using electrolysis principle
The process of category or alloy prevents metal from aoxidizing (such as corrosion), improves wearability, electric conductivity, reflective, corrosion resistance to play
The effects that (copper sulphate etc.) and having improved aesthetic appearance.It is as follows to receive tin piece Electroplating Process：Chemical pickling derusting is carried out first, so
The copper facing on bottom raw material afterwards carries out high-temperature baking, is finally electroplated again.
The receipts tin piece that electroplating technology is surface-treated, has the following problems in practical applications：Coating can not cover base
The machining spur on piece surface is easy accumulation high-temperature oxide, the surfaces such as high-temperature oxide during selecting to weld in these tool marks
The defect of quality, leading to unleaded selection weldering, even weldering crash rate is up between 0.5%~1%；In addition, plating process of tin makes and receives
Tin piece, coating and the binding force received between tin piece are weak, and thickness of coating is thin；Secondly as the layers of copper in coating in use
Consumption is dissolved in tin liquor, leads to the wellability decline for receiving tin piece to tin liquor.Case above, which is required for frequently replacing, receives tin piece, drop
Its low service life.
The complex technical process of electroplating technology, of high cost, for receipts tin piece prepared by galvanoplastic, every cost is at 100 yuan
Left and right, the process time is long, usually makes and needs one week, and electrolyte forms industrial waste after completing plating, and a large amount of discharges are to environment
It causes seriously to pollute.
Therefore, it is necessary to design a kind of receipts tin piece and preparation method thereof improving service life by improving plating process.
Invention content
The purpose of the present invention is to provide a kind of receipts tin pieces and preparation method thereof, to solve existing receipts tin piece and its making
The low problem of method coating service life.
In order to solve the above technical problems, the present invention provides a kind of receipts tin piece, the receipts tin piece includes substrate, multiple activation
Layer, multiple immersion plating layers, wherein be alternatively formed the active layer and the immersion plating layer, outermost layer successively in the substrate outer surface
For immersion plating layer.
Optionally, in the receipts tin piece, the receipts tin piece outermost layer immersion plating layer surface is minute surface.
Optionally, in the receipts tin piece, the surface roughness of the minute surface is between 0.025 micron~0.1 micron.
Optionally, in the receipts tin piece, the multiple immersion plating layer is 5 layers to 10 layers.
Optionally, in the receipts tin piece, the substrate material is mild steel.
Optionally, in the receipts tin piece, the substrate surface passes through derusting process.
Optionally, in the receipts tin piece, the immersion plating layer material is tin silver copper or tin silver.
Optionally, in the receipts tin piece, the activation layer material is scaling powder.
Optionally, in the receipts tin piece, the scaling powder main component is rosin.
The present invention also provides a kind of receipts tin piece production method, steps are as follows for the receipts tin piece production method：
S1：Substrate immerses activator, so that the substrate surface forms active layer；
S2：The substrate that surface forms active layer immerses immersion plating material, so as to form immersion plating layer outside active layer；
S3：Judge whether the immersion plating layer outside substrate surface forms minute surface, if the immersion plating layer outside the substrate surface does not have
Minute surface is formed, then carries out step S1~S3 again, if the immersion plating layer outside the substrate surface forms minute surface, is completed.
Optionally, in the receipts tin piece production method, the step S1 is carried out 5 to 10 times with step S2.
Optionally, in the receipts tin piece production method, the step S1 and step S2 is carried out 5 to 10 seconds every time.
Optionally, in the receipts tin piece production method, the substrate material is mild steel.
Optionally, in the receipts tin piece production method, before the step S1 is carried out, substrate carries out derusting process.
Optionally, in the receipts tin piece production method, the activator is more than or equal to 1000 milliliters.
Optionally, in the receipts tin piece production method, the activator is scaling powder.
Optionally, in the receipts tin piece production method, the scaling powder main component is rosin.
Optionally, in the receipts tin piece production method, when the step S1 is carried out, activator temperature be maintained at 20 DEG C~
25℃。
Optionally, in the receipts tin piece production method, the immersion plating material is tin silver copper or tin silver.
Optionally, in the receipts tin piece production method, when the step S2 is carried out, the immersion plating material is molten
State.
Optionally, in the receipts tin piece production method, when the step S2 is carried out, the immersion plating material temperature is 280
DEG C~320 DEG C between.
Optionally, in the receipts tin piece production method, the surface roughness of the minute surface is in 0.025 micron~0.1
Between micron.
In receipts tin piece provided by the invention and production method, the receipts tin piece in the present invention includes substrate, mutually overlapping
Multiple active layers and multiple immersion plating layers, due to repeatedly activating and immersion plating, multiple immersion plating keep coating thicker, the usual energy of service life
It is enough to be increased to one month by one week.Further, scaling powder is good to the activation effect of substrate surface, coating and substrate binding force compared with
By force, not easily to fall off also to improve service life；Due to being not necessarily to carry out copper-plating technique in advance to substrate, eliminate because layers of copper dissolving causes
The undesirable defect of tin piece wellability is received, coating use is longer.
Receipts tin piece surface in the present invention forms minute surface, receives tin piece resistance to high temperature oxidation pollution capacity and increases substantially, is not required to
Frequent cleans high-temperature oxide is wanted, once the continuous use time can be increased to about 8 hours from about 4 hours after cleaning, and not
It is easy to cause even to weld because of high-temperature oxydation；Cleanablity improves, and the dirt on surface is attached to after use only need to will help weldering with cotton swab
Agent, which is applied to receipts tin piece surface, can quickly remove oxidation fouling.
Receipts tin piece production method in the present invention shakes immersion plating to receiving the tin plating processing of tin piece surface progress, substrate using heat
Surface roughness requirements are low, can just coating be made to reach mirror effect without substrate polishing；Technique and process equipment are simple, only need
One flux container and molten tin bath can be realized；It is of low cost, galvanoplastic are compared, processing cost reduces by 50% or more；Processing week
Phase is short, completes a coating and prepares only needs 10 minutes or so, in addition derusting, entire technical process only need several hours；And
And scaling powder can continue to use with immersion plating material, do not generate industrial waste and avoid causing exhaust emission.
Description of the drawings
Fig. 1 is the cross-sectional view that the embodiment of the present invention one receives tin piece；
Fig. 2 is the flow chart that the embodiment of the present invention two receives tin piece production method.
As shown in the figure：1- receives tin piece；10- substrates；20- immersion plating layers；30- active layers.
Specific implementation mode
Below in conjunction with attached drawing 1~2 and two specific embodiments to receipts tin piece proposed by the present invention and preparation method thereof make into
One step is described in detail.According to following explanation and claims, advantages and features of the invention will become apparent from.It should be noted that
Attached drawing is all made of very simplified form and uses non-accurate ratio, only to convenient, lucidly aid illustration is of the invention
The purpose of embodiment.
Core of the invention thought is to provide a kind of coating receipts tin piece with long service life and preparation method thereof, the receipts
Mirror-smooth can be thus achieved without being polished in tin piece coating surface, and thickness is thicker, and binding force is strong, not easily to fall off, infiltration
Property good, receipts tin piece production method economy simple for process, low to substrate requirements, the process-cycle is short, do not generate industrial waste dirt
Dye.
To realize above-mentioned thought, the present invention provides a kind of receipts tin piece, including substrate, multiple active layers, multiple immersion plating layers,
Wherein, it is alternatively formed the active layer and the immersion plating layer successively in the substrate outer surface, outermost layer is immersion plating layer.The receipts
Steps are as follows for tin piece production method：Substrate immerses activator and forms active layer；The substrate for forming active layer immerses immersion plating material,
To form immersion plating layer outside active layer；Judge whether substrate outermost layer immersion plating layer surface forms minute surface, if the substrate surface
Outer immersion plating layer does not form minute surface, then carries out step S1~S3 again, if the immersion plating layer outside the substrate surface forms mirror
Face is then completed.
<Embodiment one>
As shown in Figure 1, providing a kind of receipts tin piece 1 in the present embodiment, the receipts tin piece 1 includes substrate 10, multiple activation
Layer 30, multiple immersion plating layers 20, wherein be alternatively formed the active layer 30 and the immersion plating layer successively in 10 outer surface of the substrate
20, outermost layer is immersion plating layer 20, i.e. substrate 10 interacts superposition with immersion plating layer 20 in innermost layer, active layer 30, and active layer 30 is close to
Substrate, outermost layer are immersion plating layer 20.
Specifically, in the receipts tin piece 1,1 outermost layer immersion plating layer of receipts tin piece, 20 surface is minute surface, and specular surface is
For the tool marks for covering 10 surface of substrate or uneven place, high-temperature oxydation is easy when avoiding using, mirror-smooth standard can
Specifically judged according to the requirement and service life that use, it is preferred that the surface roughness of the minute surface be in 0.025 micron~
Between 0.1 micron.The multiple immersion plating layer 20 is 5 to 10 layers, or so that service life is increased, and makes 20 He of immersion plating layer
The number of plies of active layer 30 is more, keeps receipts tin piece thickness thicker, i.e., in the immersion plating technology for receiving tin piece, in order to make thickness of coating
It further increases, improves service life, immersion plating number can also be increased, for example, being more than 10 times；10 material of the substrate is low-carbon
Steel can also select other materials according to actual use situation；Derusting process is passed through on 10 surface of the substrate, and derusting process can be with
Mechanical derusting, such as polishing, polishing, can also carry out chemical derusting, such as use acid pickling and rust removing；20 material of immersion plating layer is tin
Silver-bearing copper or tin silver, both materials are two kinds of solder titles that current welding profession generally uses, i.e. tin silver copper tin bar or tin silver
Tin bar, the relatively low also easy acquisition of price；30 material of the active layer is scaling powder, and high solid content scaling powder is to 10 surface of substrate
Activation effect is good, and binding force of cladding material is good；The scaling powder main component is rosin.
In receipts tin piece provided by the invention, the receipts tin piece 1 in the present invention has reached smooth surface such as due to multiple immersion plating
Minute surface is received 1 resistance to high temperature oxidation pollution capacity of tin piece and is increased substantially, do not need frequent cleans high-temperature oxide, after primary cleaning
The continuous use time was increased to 8 hours from 4 hours, and was not easy to cause even to weld because of high-temperature oxydation；And repeatedly immersion plating makes
Coating is thicker, and service life was increased to one month by one week；And high solid content scaling powder is to the activation effect of substrate surface
Good, coating and substrate binding force are stronger；Due to being not necessarily to carry out copper-plating technique in advance to substrate, eliminate because layers of copper dissolving causes to receive
The undesirable defect of tin piece wellability, coating use are longer；Cleanablity improves, and the dirt on surface is attached to after use need to only use cotton
Scaling powder is applied to receipts tin piece surface by label can quickly remove oxidation fouling.
To sum up, the structure for receiving tin piece 1 is described in detail in above-described embodiment, and certainly, the present invention includes but do not limit to
The cited structure in above-mentioned implementation, any content converted on the architecture basics that above-described embodiment provides, belongs to
In the range that the present invention is protected.Those skilled in the art can draw inferences about other cases from one instance according to the content of above-described embodiment.
<Embodiment two>
As shown in Fig. 2, providing a kind of receipts tin piece production method in the present embodiment, Fig. 2 is that the present embodiment receives the making of tin piece
The flow chart of method.The receipts tin piece production method, steps are as follows：
S1：Substrate immerses activator, so that the substrate surface forms active layer；
S2：The substrate that surface forms active layer immerses immersion plating material, so as to form immersion plating layer outside active layer；
S3：Judge whether the immersion plating layer outside substrate surface forms minute surface, if the immersion plating layer outside the substrate surface does not have
Minute surface is formed, then carries out step S1~S3 again, if the immersion plating layer outside the substrate surface forms minute surface, is completed.
Specifically, as shown in Fig. 2, step S1, S2 and S3 are completed in order first, when proceeding to the step S3, if
Judging result is no, then returns to step S1, repeat step S1 and S2, then carry out step S3 again and judged；Judge
As a result it is yes, then completes.
Further, the step S1 and S2 is carried out 5 to 10 times.In the immersion plating technology for receiving tin piece, immersion plating is outermost
Layer reaches mirror effect, generally in order to reach outermost mirror effect, immersion plating 5 to 10 times repeatedly is needed, when substrate 10
When surface itself is more smooth, immersion plating number is less can to reach mirror effect, it is preferred that the surface roughness of minute surface is in
Between 0.025 micron~0.1 micron.If surface has reached mirror effect, but in order to make thickness of coating further increase, carries
High service life can also increase immersion plating number, be more than 10 times.The step S1 is carried out 5 to 10 seconds every time with each steps of S2,
5 to 10 seconds time may insure that substrate was fully cooled in activator, and receives tin piece and come into full contact with immersion plating material, outermost
Layer fully melts in immersion plating material.
Specifically, 10 material of the substrate is mild steel, before selection and preparation substrate, substrate is firstly the need of by shape and ruler
Very little requirement is machined.In addition, before the step S1 is carried out, substrate have passed through derusting process.Mechanical derusting can be carried out, such as
Polishing, polishing etc., can also chemical derusting, such as acidification derust.
Further, the activator is more than or equal to 1000 milliliters, best, using large capacity flux container, with
Ensure that scaling powder temperature will not be got higher in process, scaling powder itself has conduction of heat, so can make receipts tin piece very
It is fast cooling.The activator is scaling powder, and high solid content scaling powder is good to the activation effect of substrate surface, binding force of cladding material
It is good, and in the case of high-temperature oxydation, scaling powder can remove oxide.The scaling powder main component is rosin.The activator
Temperature is maintained between 20 DEG C~25 DEG C, i.e. room temperature.The immersion plating quality of materials is more than or equal to 5 kilograms, i.e., large-rolume container is
It can.The immersion plating material is that tin silver copper (SnAgCu) or tin are silver-colored (SnAg), and tin silver copper and Xi Yin are current entire welding professions
Solder is generally used, it is cheap and be easy to get.The immersion plating material is molten condition, it is preferred that plating material temperature is 280
DEG C~320 DEG C between.
In conclusion it is the coating for receiving tin piece that this programme is mainly improved, immersion plating is changed to by traditional plating.Pass through change
Plating process increases thickness of coating, to improve the corrosion resistance and wetability of receiving tin piece.And substrate is put into high-temperature solder
It is interior, it is then drawn off being put into cold scaling powder at once, binding force of cladding material is improved by cold and hot environmental change.
Receipts tin piece production method in the present invention shakes immersion plating to receiving the tin plating processing of tin piece surface progress, substrate using heat
Surface roughness requirements are low, can just coating be made to reach mirror effect without substrate polishing, substantially increase and receive tin piece surface matter
Amount eliminates unleaded selection weldering even weldering failure phenomenon；Coating long lifespan is eliminated because layers of copper dissolving causes to receive tin piece wellability not
Good defect；Technique and process equipment are simple, only a flux container and molten tin bath are needed to can be realized；It is of low cost, comparison electricity
Plating method, processing cost reduce by 50% or more；Process-cycle is short, completes a coating and prepares only needs 10 minutes or so, in addition removing
Rust, entire technical process only need several hours；And scaling powder can continue to use with immersion plating material, not generate Industry Waste
Expect and avoids causing exhaust emission.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Range.
Claims (22)
1. a kind of receipts tin piece, which is characterized in that the receipts tin piece includes substrate, multiple active layers, multiple immersion plating layers, wherein
The substrate outer surface is alternatively formed the active layer and the immersion plating layer successively, and outermost layer is immersion plating layer.
2. receiving tin piece as described in claim 1, which is characterized in that the receipts tin piece outermost layer immersion plating layer surface is minute surface.
3. receiving tin piece production method as claimed in claim 2, which is characterized in that the surface roughness of the minute surface is in
Between 0.025 micron~0.1 micron.
4. receiving tin piece as described in claim 1, which is characterized in that the multiple immersion plating layer is 5 layers to 10 layers.
5. receiving tin piece as described in claim 1, which is characterized in that the substrate material is mild steel.
6. receiving tin piece as described in claim 1, which is characterized in that the substrate surface passes through derusting process.
7. receiving tin piece as described in claim 1, which is characterized in that the immersion plating layer material is tin silver copper or tin silver.
8. receiving tin piece as described in claim 1, which is characterized in that the activation layer material is scaling powder.
9. receiving tin piece as claimed in claim 8, which is characterized in that the scaling powder main component is rosin.
10. a kind of receipts tin piece production method, which is characterized in that steps are as follows for the receipts tin piece production method：
S1：Substrate immerses activator, so that the substrate surface forms active layer；
S2：The substrate that surface forms active layer immerses immersion plating material, so as to form immersion plating layer outside active layer；
S3：Judge whether the immersion plating layer outside substrate surface forms minute surface, if the immersion plating layer outside the substrate surface is not formed
Minute surface then carries out step S1~S3 again, if the immersion plating layer outside the substrate surface forms minute surface, completes.
11. receiving tin piece production method as claimed in claim 10, which is characterized in that the step S1 and step S2 carries out 5 and arrives
10 times.
12. receiving tin piece production method as claimed in claim 10, which is characterized in that the step S1 and step S2 every time into
Row 5 to 10 seconds.
13. receiving tin piece production method as claimed in claim 10, which is characterized in that the substrate material is mild steel.
14. receiving tin piece production method as claimed in claim 10, which is characterized in that before the step S1 is carried out, substrate carries out
Derusting process.
15. receiving tin piece production method as claimed in claim 10, which is characterized in that the activator is more than or equal to 1000 millis
It rises.
16. receiving tin piece production method as claimed in claim 10, which is characterized in that the activator is scaling powder.
17. receiving tin piece production method as claimed in claim 16, which is characterized in that the scaling powder main component is rosin.
18. receiving tin piece production method as claimed in claim 10, which is characterized in that when the step S1 is carried out, activator temperature
Degree is maintained at 20 DEG C~25 DEG C.
19. receiving tin piece production method as claimed in claim 10, which is characterized in that the immersion plating material is tin silver copper or tin
Silver.
20. receiving tin piece production method as claimed in claim 10, which is characterized in that when the step S2 is carried out, the immersion plating
Material is molten condition.
21. receiving tin piece production method as claimed in claim 10, which is characterized in that when the step S2 is carried out, the immersion plating
Between material temperature is 280 DEG C~320 DEG C.
22. receiving tin piece production method as claimed in claim 10, which is characterized in that the surface roughness of the minute surface is in
Between 0.025 micron~0.1 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710126766.8A CN108526647A (en) | 2017-03-06 | 2017-03-06 | Receive tin piece and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710126766.8A CN108526647A (en) | 2017-03-06 | 2017-03-06 | Receive tin piece and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108526647A true CN108526647A (en) | 2018-09-14 |
Family
ID=63489347
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710126766.8A Pending CN108526647A (en) | 2017-03-06 | 2017-03-06 | Receive tin piece and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108526647A (en) |
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