CN108480878A - It is a kind of to mix the preforming special-shaped scolding tin material and preparation method thereof of powder particle hot pressing - Google Patents
It is a kind of to mix the preforming special-shaped scolding tin material and preparation method thereof of powder particle hot pressing Download PDFInfo
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- CN108480878A CN108480878A CN201810081755.7A CN201810081755A CN108480878A CN 108480878 A CN108480878 A CN 108480878A CN 201810081755 A CN201810081755 A CN 201810081755A CN 108480878 A CN108480878 A CN 108480878A
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- Prior art keywords
- tin
- powder
- solder
- powder particle
- piece
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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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/26—Selection of soldering or welding materials proper with the principal constituent melting at less than 400 degrees C
- B23K35/262—Sn as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The invention discloses a kind of special-shaped scolding tin material and preparation method thereof that mixing powder particle hot pressing is preforming, including two dimensional surface solder and three-dimensional planar solder, two dimensional surface solder includes oval tin piece, square tin piece, circle tin piece and polygonal row tin piece, three-dimensional planar solder includes polygonal Hang Xiquan, Xi Quan, rectangle tin ring, oval tin ring, tin sleeve and tin column, molding metal mold includes upper punch, middle mould, low punch and plug, and flux powder includes tin, copper, silver, bismuth, zinc, lead, gold and nickel；By material mixing, be packed into die cavity, apply pressure and temperature, hot pressing and demoulding output and etc. prepare special-shaped scolding tin material.The preforming special-shaped scolding tin material and preparation method thereof of this mixing powder particle hot pressing, hot-injection molding can output plane solder and stretch volume three-dimensional solder, it can output solder size be more accurate and volume smaller, output solder is to be integrally formed no section flux-free coating and small flash, does not have piece and sticks bad phenomenon together with piece.
Description
Technical field
The present invention relates to a kind of preparation of special-shaped scolding tin material, more particularly to a kind of mixing powder particle hot pressing is preforming
Special-shaped scolding tin material and preparation method thereof.
Background technology
At present using stamping forming preforming special-shaped scolding tin material can only be molded two dimensional surface solder such as elliptical piece/square piece/disk/
Polygonal piece, at the same be unevenly coated with scaling powder when punching plane solder and section can not be coated with scaling powder and
There is tiny flash to generate, in addition because scaling powder itself has stickiness therefore can cause piece and piece after plane solder surface coating scaling powder
Mutually stick causes follow-up welding sequence that need to be done stripping using preceding to the weld tabs sticked and can be used together.
Invention content
In order to solve the existing problems, the purpose of the present invention is to provide a kind of preforming different of mixing powder particle hot pressing
Shape scolding tin material and preparation method thereof, hot-injection molding can output plane solder and stretch volume three-dimensional solder, hot-injection molding
Can output solder size is more accurate and volume smaller, hot-forming output solder is to be integrally formed no section flux-free coating
And small flash, because scaling powder does not have using powder particle and soldering tin powder particle injection-compression molding therefore piece and sticks together not with piece
Good phenomenon, to solve the problems mentioned in the above background technology.
To achieve the above object, the present invention provides the following technical solutions：It is a kind of to mix preforming different of powder particle hot pressing
Shape scolding tin material, including two dimensional surface solder and three-dimensional planar solder, two dimensional surface solder include oval tin piece, square tin piece, circle tin
Piece and polygonal row tin piece, three-dimensional planar solder include polygonal Hang Xiquan, Xi Quan, rectangle tin ring, oval tin ring, tin sleeve and tin
Column, two dimensional surface solder and three-dimensional planar solder are suppressed by molding metal mold；
Molding metal mold includes upper punch, middle mould, low punch and plug, and plug activity is inserted to low punch, the top of low punch
End movable sleeve is connected to middle mould, and the top of the low punch and the bottom end of upper punch match, and powder feeder is placed on the top of middle mould, is supplied
The mixture of soldering tin powder particle and flux powder is placed in powder device, mixture is two dimensional surface solder and three-dimensional planar solder
Raw material, flux powder includes tin, copper, silver, bismuth, zinc, lead, gold and nickel.
Preferably, the raw material of flux powder includes tin, copper, silver and lead.
Preferably, the raw material of flux powder is divided into unleaded and has two kinds of lead, unleaded raw material proportioning：96 parts of tin, silver
3.7-4.3 parts and 0.3-0.7 parts of copper, there is the raw material proportioning of lead：95 parts of tin, 0.3-0.8 parts of lead.
Preferably, unleaded raw material proportioning：0.2-0.4 parts of 98 parts of tin, 1 part of copper and silver, there is the raw material proportioning of lead：Tin 60
Part, 0.3-0.8 parts of lead.
The present invention provides another technical solution：A kind of system mixing the preforming special-shaped scolding tin material of powder particle hot pressing
Preparation Method includes the following steps：
S1：Upper low punch separation, middle mould is placed downwards on the lower punch；
S2：Soldering tin powder particle and flux powder particle are mixed evenly according to a certain percentage, are put into according to different solders
The welding powder of different number；
S3：The mixture of uniformly mixed soldering tin powder particle and flux powder particle is filled in powder feeder, powder supply is passed through
Device is moved to middle mould central feeder；
S4：Middle mould is moved up along low punch, and mixture powder is inhaled into low punch；
S5：Powder feeder carries mixture and therefrom removes on mould；
S6：Device is set into relevant parameter pressure (1 ~ 20kgf/cm2) with temperature (50 ~ 250 DEG C) and time (0.1 ~
10sec)-（Determine density）, different size of pressure is carried out as needed；
S7：Upper punch is suppressed downwards, is carried out to the uniformly mixed soldering tin powder particle and flux powder particle on low punch top
Hot pressing, and in cavity therefore cure and be integrally formed various plane solders and 3D solid solders；
S8：Upper punch resets upwards, output two dimensional surface solder or 3 D stereo solder after demoulding, then middle mould drop-down, powder supply
Device, which advances, carries out next cycle.
Compared with prior art, the beneficial effects of the invention are as follows：The preforming special-shaped scolding tin of this mixing powder particle hot pressing
Material and preparation method thereof is molded using mould heat pressure and can quickly produce high density, height by temperature, pressure, time control
The preformed solder of precision, two 3D shapes, the shape of low punch in change, according to the shape for making two dimension or three-dimensional solder
It needs to carry out design shape, you can processing prepares scolding tin material of different shapes, and the technology production technology process is few, economic benefit
The advantages that high, and overcome that conventional ones technique performance buildup scaling powder is unevenly distributed, scaling powder stickiness leads to solder system
Product stick that piece, performance buildup mechanical strength is low, performance buildup is yielding and small flash, performance buildup are not easy forming thin-walled, solder system
Product not easily molded microsize the shortcomings of, it is small-sized, complicated and with particular/special requirement two, three particularly suitable for producing in enormous quantities
The preformed solder supply electronic product welding procedure for tieing up shape meets the light and handy thin type precision of electronic product now and portable tide
Stream trend.
Description of the drawings
Fig. 1 does not mold state diagram for the present invention's；
The state diagram of Fig. 2 middle mould pull-up after the filler for the present invention；
Fig. 3 is that the powder feeder of the present invention retreats molding state diagram；
Fig. 4 is that the hot pressing of the present invention divides mould state diagram after the completion；
Fig. 5 is the A-A enlarged drawings of the present invention；
Fig. 6 is the B-B enlarged drawings of the present invention；
Fig. 7 is the C-C enlarged drawings of the present invention；
Fig. 8 is the oval tin piece schematic diagram of the present invention；
Fig. 9 is the square tin piece schematic diagram of the present invention；
Figure 10 is the circle tin piece schematic diagram of the present invention；
Figure 11 is the polygonal row tin piece schematic diagram of the present invention；
Figure 12 is the polygonal row tin circle schematic diagram of the present invention；
Figure 13 is the tin circle schematic diagram of the present invention；
Figure 14 is the rectangle tin ring schematic diagram of the present invention；
Figure 15 is the oval tin ring schematic diagram of the present invention；
Figure 16 is the tin sleeve schematic diagram of the present invention；
Figure 17 is the tin column schematic diagram of the present invention.
In figure：1 oval tin piece, 2 side's tin pieces, 3 circle tin pieces, 4 polygonal row tin pieces, 5 polygonal row Xi Quan, 6 Xi Quan, 7 rectangle tin
Mould, 15 low punches, 16 cores in ring, 8 oval tin rings, 9 tin sleeves, 10 tin columns, 11 upper punch, 12 powder feeders, 13 mixtures, 14
Stick.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 8-17 is please referred to, it is a kind of to mix the preforming special-shaped scolding tin material of powder particle hot pressing, including two dimensional surface solder
With three-dimensional planar solder, two dimensional surface solder includes that oval tin piece 1, square tin piece 2, circle tin piece 3 and polygonal row tin piece 4, three-dimensional are flat
Face solder includes polygonal row tin circle 5, tin circle 6, rectangle tin ring 7, oval tin ring 8, tin sleeve 9 and tin column 10, two dimensional surface solder
It is suppressed by molding metal mold with three-dimensional planar solder；
- 4 are please referred to Fig.1, molding metal mold includes upper punch 11, middle mould 14, low punch 15 and plug 16, and 16 activity of plug inserts
To low punch 15, the top movable sleeve of low punch 15 is connected to middle mould 14, the top of low punch 15 and the bottom end phase of upper punch 11
The two is contacted the cavity to be formed and is needed come design shape according to the shape for making two dimension or three-dimensional solder, for example made by matching
Standby tin sleeve 9, by cavity design at cylinder, will prepare rectangle tin ring 7, by cavity design at cuboid, middle mould
Powder feeder 12 is placed on 14 top, and the mixture 13 of soldering tin powder particle and flux powder, mixture are placed in powder feeder 12
13 be the raw material of two dimensional surface solder and three-dimensional planar solder, and flux powder can be by tin, copper, silver, bismuth, zinc, lead, gold and nickel
Equal scaling powders composition, wherein its scaling powder fusing point of different ingredients is different, can need to help using different according to different
Solder powder forms different welding machine powder, and different flux powder fusing points are different, needs different melt in different occasions
The solder flux of point carries out spot welding, and the solder flux of different melting points is also required to the scaling powder of different melting points, and primary raw material is tin, copper, silver, lead.
Embodiment 1
- 7 are please referred to Fig.1, the unleaded raw material proportioning of this programme flux powder flux powder：96 parts of tin, 3.7-4.3 parts of silver with
And 0.3-0.7 parts of copper, wherein silver, copper accounting is more, and its melt temperature is lower, range：212—221℃.
It is matched based on above-mentioned raw materials, a kind of preparation side mixing the preforming special-shaped scolding tin material of powder particle hot pressing is provided
Method includes the following steps：
The first step：Upper low punch separation, middle mould 14 is placed downwards on low punch 15, is convenient for suction；
Second step：Soldering tin powder particle and flux powder particle are mixed evenly according to a certain percentage, according to different solders
It is put into the welding powder of different number, because scaling powder does not have using powder particle and soldering tin powder particle injection-compression molding therefore piece and sticked with piece
It is attached to bad phenomenon together；
Third walks：By uniformly mixed soldering tin powder particle and the mixture of flux powder particle（13）It is filled in powder feeder 12
It is interior, 14 central feeder of middle mould is moved to by powder feeder 12；
4th step：Middle mould 14 is moved up along low punch 15, and 13 powder of mixture is inhaled into low punch 15；
5th step：Powder feeder 12 carries mixture 13 and therefrom removes on mould 14, facilitates upper punch（11）Heat is carried out with low punch 15
Pressure；
6th step：Device is set into relevant parameter pressure (1 ~ 20kgf/cm2) with temperature (50 ~ 250 DEG C) and time (0.1 ~
10sec)-（Determine density）, different size of pressure is carried out as needed；
7th step：Upper punch 11 is suppressed downwards, to the uniformly mixed soldering tin powder particle and flux powder on 15 top of low punch
Particle carries out hot pressing, and in cavity thus solidification is integrally formed various plane solders and 3D solid solders, according to make two dimension or
The shape of three-dimensional solder needs to come design shape, and hot-injection molding output plane solder and can stretch the three-dimensional solder of volume,
Hot-injection molding can output solder size be more accurate and volume smaller；
8th step：Upper punch 11 resets upwards, output two dimensional surface solder or 3 D stereo solder after demoulding, hot-forming production
It is to be integrally formed no section flux-free coating and small flash to go out solder, and then middle mould 14 pulls down, and powder feeder 12, which advances, to carry out
Next cycle carries out lasting compacting.
Embodiment 2
The unleaded raw material proportioning of this programme flux powder flux powder：0.2-0.4 parts of 98 parts of tin, 1 part of copper and silver, wherein
Silver, copper accounting is more, and its melt temperature is lower, and 224-229 DEG C of range, specific preparation process is same as Example 1, herein not
It repeats.
Embodiment 3
The unleaded raw material proportioning of this programme flux powder flux powder：95 parts of tin, 0.3-0.8 parts of lead, lead composition gets over Gao Rong
Higher, 189 degrees Celsius of the melt temperature of point, specific preparation process is identical as Examples 1 and 2, and this will not be repeated here.
Embodiment 4
The unleaded raw material proportioning of this programme flux powder flux powder：60 parts of tin, 0.3-0.8 parts of lead, lead composition gets over Gao Rong
Higher, 213 degrees Celsius of the melt temperature of point, specific preparation process is identical as above example, and this will not be repeated here.
In conclusion the special-shaped scolding tin material and preparation method thereof that the powder particle hot pressing of this mixing is preforming, utilizes mold hot
Preforming weldering molded and that high density, high-precision, two 3D shapes can be quickly produced by temperature, pressure, time control
Expect, the shape of low punch in change, according to needing come design shape for the shape for making two dimension or three-dimensional solder, you can processing is made
The advantages that standby scolding tin material of different shapes, the technology production technology process is few, high financial profit, and overcome traditional punching
Pressure technique performance buildup scaling powder be unevenly distributed, scaling powder stickiness cause performance buildup stick piece, performance buildup mechanical strength it is low,
Performance buildup is yielding and small flash, performance buildup be not easy forming thin-walled, performance buildup not easily molded microsize the shortcomings of, it is special
Be not suitable for producing in enormous quantities it is small-sized, complicated and with particular/special requirement two, the preformed solder of 3D shape is for electron
Product jointing technique meets the light and handy thin type precision of electronic product now and portable trend trend.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of mixing the preforming special-shaped scolding tin material of powder particle hot pressing, which is characterized in that including two dimensional surface solder and three
Dimensional plane solder, two dimensional surface solder include oval tin piece（1）, square tin piece（2）, circle tin piece（3）With polygonal row tin piece（4）, three
Dimensional plane solder includes polygonal row Xi Quan（5）, Xi Quan（6）, rectangle tin ring（7）, oval tin ring（8）, tin sleeve（9）With tin column
（10）, two dimensional surface solder and three-dimensional planar solder are suppressed by molding metal mold；
Molding metal mold includes upper punch（11）, middle mould（14）, low punch（15）And plug（16）, plug（16）Activity insert to
Low punch（15）It is interior, low punch（15）Top movable sleeve be connected to middle mould（14）, the low punch（15）Top and upper punch
（11）Bottom end match, middle mould（14）Top place powder feeder（12）, powder feeder（12）Interior placement soldering tin powder particle and
The mixture of flux powder（13）, mixture（13）For the raw material of two dimensional surface solder and three-dimensional planar solder, scaling powder powder
End includes tin, copper, silver, bismuth, zinc, lead, gold and nickel.
2. a kind of special-shaped scolding tin material that mixing powder particle hot pressing is preforming as described in claim 1, which is characterized in that help weldering
The raw material of agent powder includes tin, copper, silver and lead.
3. a kind of special-shaped scolding tin material that mixing powder particle hot pressing is preforming as described in claim 1, which is characterized in that help weldering
The raw material of agent powder is divided into unleaded and has two kinds of lead, unleaded raw material proportioning：96 parts of tin, 3.7-4.3 parts of silver and copper 0.3-0.7
Part, there is the raw material proportioning of lead：95 parts of tin, 0.3-0.8 parts of lead.
4. a kind of special-shaped scolding tin material that mixing powder particle hot pressing is preforming as claimed in claim 3, which is characterized in that unleaded
Raw material proportioning：0.2-0.4 parts of 98 parts of tin, 1 part of copper and silver, there is the raw material proportioning of lead：60 parts of tin, 0.3-0.8 parts of lead.
5. a kind of preparation method of mixing preforming special-shaped scolding tin material of powder particle hot pressing as described in claim 1-4,
It is characterized in that, includes the following steps：
S1：Upper low punch separation, by middle mould（14）In low punch（15）It is upper to place downwards；
S2：Soldering tin powder particle and flux powder particle are mixed evenly according to a certain percentage, are put into according to different solders
The welding powder of different number；
S3：By uniformly mixed soldering tin powder particle and the mixture of flux powder particle（13）It is filled in powder feeder（12）It is interior,
Pass through powder feeder（12）It is moved to middle mould（14）Central feeder；
S4：Middle mould（14）Along low punch（15）It moves up, mixture（13）Powder is inhaled into low punch（15）；
S5：Powder feeder（12）Carry mixture（13）Therefrom mould（14）On remove；
S6：Device is set into relevant parameter pressure (1 ~ 20kgf/cm2) with temperature (50 ~ 250 DEG C) and time (0.1 ~
10sec)-（Determine density）, different size of pressure is carried out as needed；
S7：Upper punch（11）Compacting downwards, to low punch（15）The uniformly mixed soldering tin powder particle and flux powder on top
Particle carries out hot pressing, and in cavity therefore cures and be integrally formed various plane solders and 3D solid solders；
S8：Upper punch（11）It resets upwards, output two dimensional surface solder or 3 D stereo solder after demoulding, then middle mould（14）Under
It draws, powder feeder（12）Advance and carries out next cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810081755.7A CN108480878A (en) | 2018-01-29 | 2018-01-29 | It is a kind of to mix the preforming special-shaped scolding tin material and preparation method thereof of powder particle hot pressing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810081755.7A CN108480878A (en) | 2018-01-29 | 2018-01-29 | It is a kind of to mix the preforming special-shaped scolding tin material and preparation method thereof of powder particle hot pressing |
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| Publication Number | Publication Date |
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| CN108480878A true CN108480878A (en) | 2018-09-04 |
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ID=63343868
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| CN201810081755.7A Pending CN108480878A (en) | 2018-01-29 | 2018-01-29 | It is a kind of to mix the preforming special-shaped scolding tin material and preparation method thereof of powder particle hot pressing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114083170A (en) * | 2021-11-18 | 2022-02-25 | 郑州机械研究所有限公司 | Brazing filler metal single piece and preparation method thereof |
| CN114434039A (en) * | 2021-01-15 | 2022-05-06 | 重庆理工大学 | Welding flux for low-temperature interconnection of copper and aluminum dissimilar materials and welding method |
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| CN101396772A (en) * | 2008-08-15 | 2009-04-01 | 厦门虹鹭钨钼工业有限公司 | Formulation of solder ring for magnetron cathode assembly and manufacture method thereof |
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| JPS55122668A (en) * | 1979-03-16 | 1980-09-20 | Toshiba Corp | Brazing structure of die |
| CN101125396A (en) * | 2006-08-17 | 2008-02-20 | 黄柏山 | Tin paste and its use in thermal press welding method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114434039A (en) * | 2021-01-15 | 2022-05-06 | 重庆理工大学 | Welding flux for low-temperature interconnection of copper and aluminum dissimilar materials and welding method |
| CN114083170A (en) * | 2021-11-18 | 2022-02-25 | 郑州机械研究所有限公司 | Brazing filler metal single piece and preparation method thereof |
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Application publication date: 20180904 |