CN103639620A - Method for manufacturing Sn-Bi brittle alloy performed soldering lug - Google Patents
Method for manufacturing Sn-Bi brittle alloy performed soldering lug Download PDFInfo
- Publication number
- CN103639620A CN103639620A CN201310639439.4A CN201310639439A CN103639620A CN 103639620 A CN103639620 A CN 103639620A CN 201310639439 A CN201310639439 A CN 201310639439A CN 103639620 A CN103639620 A CN 103639620A
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- China
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- alloy
- described step
- preparation
- preformed soldering
- brittle alloy
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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
- 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
- B23K35/264—Bi as the principal constituent
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
Abstract
The invention discloses a method for manufacturing a Sn-Bi brittle alloy performed soldering lug. The method includes the material preparing step, the casting step, the hot rolling step, the blanking step and the like. According to the method for manufacturing the Sn-Bi brittle alloy performed soldering lug, the machined Sn-Bi soldering lug is accurate in component, complete and accurate in shape, and excellent in welding usability. The process procedures are simplified, the production cost is more reasonable, and production efficiency is higher. Soldering lugs in different sizes and shapes can be produced according to different requirements.
Description
Technical field
The present invention relates to micro-joining technical field, relate in particular to a kind of preparation method of Sn-Bi brittle alloy preformed soldering.
Background technology
Because leaded electronic product exists the problem of contaminated environment, increasing country starts to pay attention to the R and D of leadless electronic scolder.At present, conventional lead-free solder series comprises Xi Yin, tin copper, tin zinc and tin bismuth etc., and wherein, especially good with tin-bismuth solder mechanical property, creep resisting ability is strong, low price, and also fusing point is also approaching with tin-lead solder, and obtain extensive use.
Yet along with the size of electronic component is more and more less, tin-bismuth solder is made preformed soldering and is had larger market prospects.But because the fragility of tin-bismuth solder is large especially, these forms of silk or sheet are difficult to according to specification machine-shaping.In process, toward contact, will cause the waste of material, need a large amount of manually, quality condition is also very inconsistent simultaneously.How producing Sn-Bi brittle alloy preformed soldering just becomes the technique of a kind of urgent need of industry.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of preparation method of Sn-Bi brittle alloy preformed soldering is provided, and the method can effectively solve the problem that tin-bismuth solder is crisp, be difficult to be processed into foil.
For solving the problems of the technologies described above, the invention provides a kind of preparation method of Sn-Bi brittle alloy preformed soldering, comprise
(1) batching, the raw material of the Sn-Bi that is 42:58 by mass percent prepares;
(2) founding, puts into above-mentioned steps (1) gained raw material in the crucible of protecting pre-alloyed system, is heated to 180～200 ℃ and is fused into uniform LIQUID Sn-Bi alloy, and be cast to the excellent type Sn-Bi alloy cast ingot of formation in ingot mould under N2 gas atmosphere;
(3) hot rolling, adopts hot-rolling mill calendering for band the excellent type Sn-Bi alloy cast ingot making in above-mentioned steps (2);
(4) stamping-out, obtains preformed soldering by the band of hot rolling gained in above-mentioned steps (3) by Dies ' Blanking.
Wherein, the pre-alloyed system of protection in described step (2) comprises: be arranged at resistance furnace, crucible, mold and quartz pushrod in vacuum glove box, wherein the Control for Kiln Temperature cabinet of resistance furnace is positioned over the outside of described vacuum glove box.
Wherein, described step (2) is that vacuum glove box is vacuumized, until pressure be-0.1MPa or-below 0.1MPa, be then filled with N2 gas to atmospheric pressure; Starting resistance stove, and set pre-alloyed temperature by described Control for Kiln Temperature cabinet, under above-mentioned N2 gas atmosphere, be heated to 180～200 ℃ and be fused into uniform LIQUID Sn-Bi alloy; By quartz pushrod, stir in good time; After pre-alloyed getting well, liquation is cast in ingot mould, forms excellent type Sn-Bi alloy cast ingot.
Wherein, described step (3) is the hot-rolling mill that adopts diameter of axle 60mm, and the temperature of rolling is 120 ℃, draught pressure≤500KG, and linear velocity is controlled at 0.6-0.8 m/min and carries out hot rolling calendering.
Wherein, described step (3) also comprises roughing and finish rolling, and described roughing is that each volume under pressure is controlled at 0.10mm to 0.30mm, and the band that thickness is more than or equal to 1mm carries out hot pressing and rolls; Described finish rolling is that each volume under pressure is controlled at 0.005mm to 0.050mm, and the band that thickness is less than to 1mm carries out hot pressing and rolls.
Wherein, in described step (3), the thickness of strip after calendering is 0.05mm or 0.3mm.
Wherein, the preformed soldering in described step (4) is that three-dimensional dimension is the square weld tabs of 0.6mm*0.6mm*0.03mm.
Wherein, the preformed soldering that stamping-out obtains in described step (4) is the annular weld tabs that outer, interior circular diameter and gauge are respectively Ф 2.9mm* Ф 2.22mm*0.3mm.
Wherein, also comprise that step (5) clout reclaims, described step (5) comprising: remaining alloy strip steel rolled stock after stamping-out in described step (4) is melt into ingot casting again by described step (2), and carries out follow-up production and processing.
The preparation method of Sn-Bi brittle alloy preformed soldering of the present invention, the tin bismuth weld tabs composition that processes is accurate, shape is complete accurately, welding serviceability is excellent.Technique process is simplified, and production cost is more reasonable, and production efficiency is higher.Can need to produce different size, difform weld tabs according to different.
The specific embodiment
Below the preferred embodiment of the present invention is elaborated.Should be understood that these embodiment are only not used in and limit the scope of the invention for the present invention is described.In addition should be understood that those skilled in the art make various changes or modifications the present invention after having read the content of the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
A kind of Sn-Bi alloy of the present invention preformed soldering preparation method, comprises the steps:
(1) raw material of the Sn-Bi that is 42:58 by mass percent prepares.
(2) founding, resistance furnace, crucible, mold and quartz pushrod are arranged in vacuum glove box, wherein the Control for Kiln Temperature cabinet of resistance furnace is positioned over the outside of described vacuum glove box, and described resistance furnace, crucible, mold, quartz pushrod and vacuum glove box have formed a pre-alloyed system of protection;
The raw material that above-mentioned steps (1) is prepared is put into the pre-alloyed system of the protection having configured;
Start vavuum pump and vacuumize, until pressure be-0.1MPa or-below 0.1MPa, then vavuum pump is shut down; Be filled with N2 gas to atmospheric pressure;
Starting resistance stove, and set pre-alloyed temperature by described Control for Kiln Temperature cabinet, pre-alloyed temperature is 180 ℃-200 ℃; By quartz pushrod, stir in good time; After pre-alloyed getting well, liquation is cast in ingot mould.
(3) hot rolling, adopts the hot-rolling mill hot rolling of diameter of axle 60mm, and the temperature of rolling is 120 ℃, draught pressure≤500KG, and linear velocity is controlled at 0.6-0.8 m/min;
Roughing, the band that thickness is more than or equal to more than 1mm carries out roughing, and each volume under pressure is controlled at 0.10mm to 0.30mm;
Carefully roll, the band to thickness below 1mm carries out finish rolling, and each volume under pressure is controlled at 0.005mm to 0.050mm.
(4) stamping-out.
(5) clout reclaims.
embodiment 1
The preparation method of Sn-Bi alloy preformed soldering is as follows:
(1) raw material of the pure bismuth of 0.058Kg, 0.042Kg pure tin is prepared.
(2) resistance furnace, crucible, mold and quartz pushrod are arranged in vacuum glove box, wherein the Control for Kiln Temperature cabinet of resistance furnace is positioned over the outside of described vacuum glove box, and described resistance furnace, crucible, mold, quartz pushrod and vacuum glove box have formed a pre-alloyed system of protection;
The raw material that above-mentioned steps (1) is prepared is put into the pre-alloyed system of the protection having configured;
Start vavuum pump and vacuumize, until pressure be-0.1MPa or-below 0.1MPa, then, by vavuum pump shutdown, be filled with N2 gas to atmospheric pressure;
Above-mentioned steps (1) gained raw material is put into the crucible of vacuum glove box, starting resistance stove, and set pre-alloyed temperature by described Control for Kiln Temperature cabinet, under N2 gas atmosphere, be heated to 180～200 ℃ and be fused into uniform LIQUID Sn-Bi alloy; By quartz pushrod, stir in good time; After pre-alloyed getting well, liquation is cast in ingot mould, forms excellent type Sn-Bi alloy cast ingot.
(3) adopt the hot-rolling mill of diameter of axle 60mm, the temperature of rolling is 120 ℃, draught pressure≤500KG, and linear velocity is controlled at 0.6-0.8 m/min, to the excellent type Sn-Bi alloy cast ingot making in above-mentioned steps (2), adopts hot-rolling mill to carry out hot rolling calendering;
First carry out roughing, the band to thickness more than 1mm carries out roughing, and each volume under pressure is controlled at 0.10mm to 0.30mm;
Then carefully roll, the band to thickness below 1mm carries out finish rolling, and each volume under pressure is controlled at 0.005mm to 0.050mm.
Until calendering obtains the band that thickness is 0.05mm.
(4) band of hot rolling gained in above-mentioned steps (3) is passed through to Dies ' Blanking, obtain the square weld tabs that three-dimensional dimension is respectively 0.6mm*0.6mm*0.03mm;
(5) remaining alloy strip steel rolled stock after stamping-out in above-mentioned steps (4) is melt into ingot casting again by step (2), and carries out follow-up production and processing.
embodiment 2
The preparation method of Sn-Bi alloy preformed soldering is as follows:
(1) raw material of the pure bismuth of 0.058Kg, 0.042Kg pure tin is prepared;
(2) resistance furnace, crucible, mold and quartz pushrod are arranged in vacuum glove box, wherein the Control for Kiln Temperature cabinet of resistance furnace is positioned over the outside of described vacuum glove box, and described resistance furnace, crucible, mold, quartz pushrod and vacuum glove box have formed a pre-alloyed system of protection;
The raw material that above-mentioned steps (1) is prepared is put into the pre-alloyed system of the protection having configured;
Start vavuum pump and vacuumize, until pressure be-0.1MPa or-below 0.1MPa, then, by vavuum pump shutdown, be filled with N2 gas to atmospheric pressure;
Above-mentioned steps (1) gained raw material is put into the crucible of vacuum glove box, starting resistance stove, and set pre-alloyed temperature by described Control for Kiln Temperature cabinet, under N2 gas atmosphere, be heated to 180～200 ℃ and be fused into uniform LIQUID Sn-Bi alloy; By quartz pushrod, stir in good time; After pre-alloyed getting well, liquation is cast in ingot mould, forms excellent type Sn-Bi alloy cast ingot.
(3) adopt the hot-rolling mill of diameter of axle 60mm, the temperature of rolling is 120 ℃, draught pressure≤500KG, and linear velocity is controlled at 0.6-0.8 m/min, to the excellent type Sn-Bi alloy cast ingot making in above-mentioned steps (2), adopts hot-rolling mill to carry out hot rolling calendering;
First carry out roughing, the band to thickness more than 1mm carries out roughing, and each volume under pressure is controlled at 0.10mm to 0.30mm;
Then carefully roll, the band to thickness below 1mm carries out finish rolling, and each volume under pressure is controlled at 0.005mm to 0.050mm.
Until calendering obtains the band that thickness is 0.3mm.
(4) by the band of hot rolling gained in above-mentioned steps (3) by Dies ' Blanking, obtain the annular weld tabs that outer, interior circular diameter and thickness are of a size of respectively Ф 2.9mm* Ф 2.22mm*0.3mm;
(5) remaining alloy strip steel rolled stock after stamping-out in above-mentioned steps (4) is melt into ingot casting again by step (2), and carries out follow-up production and processing.
Finally it should be noted that, the foregoing is only preferred embodiment of the present invention, rather than the restriction to technical solution of the present invention, any being equal to that the technology of the present invention feature is done, replaces or corresponding improvement, still within protection scope of the present invention.
Claims (9)
1. a preparation method for Sn-Bi brittle alloy preformed soldering, comprising:
(1) batching, the raw material of the Sn-Bi that is 42:58 by mass percent prepares;
(2) founding, puts into above-mentioned steps (1) gained raw material in the crucible of protecting pre-alloyed system, is heated to 180～200 ℃ and is fused into uniform LIQUID Sn-Bi alloy, and be cast to the excellent type Sn-Bi alloy cast ingot of formation in ingot mould under N2 gas atmosphere;
(3) hot rolling, adopts hot-rolling mill calendering for band the excellent type Sn-Bi alloy cast ingot making in above-mentioned steps (2);
(4) stamping-out, obtains preformed soldering by the band of hot rolling gained in above-mentioned steps (3) by Dies ' Blanking.
2. the preparation method of a kind of Sn-Bi brittle alloy preformed soldering as claimed in claim 1; it is characterized in that; the pre-alloyed system of protection in described step (2) comprises: be arranged at resistance furnace, crucible, mold and quartz pushrod in vacuum glove box, wherein the Control for Kiln Temperature cabinet of resistance furnace is positioned over the outside of described vacuum glove box.
3. the preparation method of a kind of Sn-Bi brittle alloy preformed soldering as claimed in claim 1 or 2, is characterized in that, described step (2) is that vacuum glove box is vacuumized, until pressure be-0.1MPa or-below 0.1MPa, be then filled with N2 gas to atmospheric pressure; Starting resistance stove, and set pre-alloyed temperature by described Control for Kiln Temperature cabinet, under above-mentioned N2 gas atmosphere, be heated to 180～200 ℃ and be fused into uniform LIQUID Sn-Bi alloy; By quartz pushrod, stir in good time; After pre-alloyed getting well, liquation is cast in ingot mould, forms excellent type Sn-Bi alloy cast ingot.
4. the preparation method of a kind of Sn-Bi brittle alloy preformed soldering as claimed in claim 1, it is characterized in that, described step (3) is the hot-rolling mill that adopts diameter of axle 60mm, and the temperature of rolling is 120 ℃, draught pressure≤500KG, linear velocity is controlled at 0.6-0.8 m/min and carries out hot rolling calendering.
5. the preparation method of a kind of Sn-Bi brittle alloy preformed soldering as described in claim 1 or 4, it is characterized in that, described step (3) also comprises roughing and finish rolling, and described roughing is that each volume under pressure is controlled at 0.10mm to 0.30mm, and the band that thickness is more than or equal to 1mm carries out hot pressing and rolls; Described finish rolling is that each volume under pressure is controlled at 0.005mm to 0.050mm, and the band that thickness is less than to 1mm carries out hot pressing and rolls.
6. the preparation method of a kind of Sn-Bi brittle alloy preformed soldering as claimed in claim 1, is characterized in that, the thickness of strip in described step (3) after calendering is 0.05mm or 0.3mm.
7. the preparation method of a kind of Sn-Bi brittle alloy preformed soldering as claimed in claim 1, is characterized in that, the preformed soldering in described step (4) is that three-dimensional dimension is the square weld tabs of 0.6mm*0.6mm*0.03mm.
8. the preparation method of a kind of Sn-Bi brittle alloy preformed soldering as claimed in claim 1, it is characterized in that, the preformed soldering that stamping-out obtains in described step (4) is the annular weld tabs that outer, interior circular diameter and gauge are respectively Ф 2.9mm* Ф 2.22mm*0.3mm.
9. the preparation method of a kind of Sn-Bi brittle alloy preformed soldering as claimed in claim 1, it is characterized in that, also comprise that step (5) clout reclaims, described step (5) comprising: remaining alloy strip steel rolled stock after stamping-out in described step (4) is melt into ingot casting again by described step (2), and carries out follow-up production and processing.
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| CN201310639439.4A CN103639620B (en) | 2013-12-04 | 2013-12-04 | A kind of preparation method of Sn-Bi brittle alloy preformed soldering |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105252173A (en) * | 2015-11-13 | 2016-01-20 | 广东中实金属有限公司 | Preparation method of pre-molding soldering flake with uniform coatings |
| CN108714749A (en) * | 2018-05-30 | 2018-10-30 | 江苏恒加机械工程有限公司 | A kind of preparation method of high brittle alloy weld tabs |
| CN108857147A (en) * | 2018-06-29 | 2018-11-23 | 陕西图灵电子科技有限公司 | A kind of tin bismuth preformed solder production technology |
| CN109513747A (en) * | 2018-09-25 | 2019-03-26 | 深圳市兴鸿泰锡业有限公司 | It is a kind of to prepare difficult deformation sn-bi alloy preformed soldering method |
| CN110512102A (en) * | 2019-10-11 | 2019-11-29 | 云南锡业集团（控股）有限责任公司研发中心 | A kind of preparation method of Sn-Ag-Cu alloy preform weld tabs |
| CN110695569A (en) * | 2019-09-30 | 2020-01-17 | 无锡广捷富金属制品有限公司 | Manufacturing process for tin bar molding |
| CN114850725A (en) * | 2022-05-24 | 2022-08-05 | 雅拓莱焊接科技（惠州）有限公司 | Ultrathin tin-bismuth system preformed welding ring and preparation process thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105252173A (en) * | 2015-11-13 | 2016-01-20 | 广东中实金属有限公司 | Preparation method of pre-molding soldering flake with uniform coatings |
| CN108714749A (en) * | 2018-05-30 | 2018-10-30 | 江苏恒加机械工程有限公司 | A kind of preparation method of high brittle alloy weld tabs |
| CN108857147A (en) * | 2018-06-29 | 2018-11-23 | 陕西图灵电子科技有限公司 | A kind of tin bismuth preformed solder production technology |
| CN109513747A (en) * | 2018-09-25 | 2019-03-26 | 深圳市兴鸿泰锡业有限公司 | It is a kind of to prepare difficult deformation sn-bi alloy preformed soldering method |
| CN109513747B (en) * | 2018-09-25 | 2020-06-30 | 深圳市兴鸿泰锡业有限公司 | Method for preparing tin-bismuth alloy preformed soldering lug difficult to deform |
| CN110695569A (en) * | 2019-09-30 | 2020-01-17 | 无锡广捷富金属制品有限公司 | Manufacturing process for tin bar molding |
| CN110512102A (en) * | 2019-10-11 | 2019-11-29 | 云南锡业集团（控股）有限责任公司研发中心 | A kind of preparation method of Sn-Ag-Cu alloy preform weld tabs |
| CN110512102B (en) * | 2019-10-11 | 2021-06-22 | 云南锡业集团（控股）有限责任公司研发中心 | Preparation method of Sn-Ag-Cu alloy preformed soldering lug |
| CN114850725A (en) * | 2022-05-24 | 2022-08-05 | 雅拓莱焊接科技（惠州）有限公司 | Ultrathin tin-bismuth system preformed welding ring and preparation process thereof |
| CN114850725B (en) * | 2022-05-24 | 2024-04-26 | 雅拓莱焊接科技（惠州）有限公司 | Ultrathin tin-bismuth system preformed welding ring and preparation process thereof |
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