CN104907723B - Carry the medicine core silver solder of increasing tougheness alloy - Google Patents
Carry the medicine core silver solder of increasing tougheness alloy Download PDFInfo
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- CN104907723B CN104907723B CN201510269707.7A CN201510269707A CN104907723B CN 104907723 B CN104907723 B CN 104907723B CN 201510269707 A CN201510269707 A CN 201510269707A CN 104907723 B CN104907723 B CN 104907723B
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- Prior art keywords
- solder
- silver
- alloy
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- alloys
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Classifications
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- 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
-
- 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
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3603—Halide salts
- B23K35/3605—Fluorides
-
- 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
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3606—Borates or B-oxides
Abstract
The invention discloses a kind of medicine core silver solder for carrying increasing tougheness alloy, including silver-base solder crust and core powder intracutaneous outside the silver-base solder is filled in, the core powder is mixed by brazing flux, silver alloy, copper alloy.The present invention with the addition of the metallic elements such as Sn, Ni, Si in the form of intermediate alloy in brazing flux, when solder crust alloying element content is relatively low, still ensure that it has excellent processing characteristics, solder has good wetability and mobility, the intensity and low-temperature impact toughness and cracking resistance of weld seam are improved simultaneously, reduce ductile-brittle transition temperature.Simultaneously on the premise of crust composition is not changed, the weld seam of different component can be obtained by the metal ratio being adjusted flexibly in core powder；It can ensure that solder has enough loadings in soldering wide arc gap component.The present invention realize brazing flux it is convenient, it is efficient it is pre- add, it is easy to assembly during with soldering, easily realize automated production, low cost and other advantages, be conducive to automating the popularization and application of soldering processes.
Description
Technical field
The present invention relates to welding material, more particularly, to a kind of medicine core silver solder for carrying increasing tougheness alloy.
Background technology
Silver solder fusing point is moderate, welding usability is good, and with good intensity, toughness, electric conductivity, thermal conductivity and anti-corrosion
Property, it is a most widely used class hard solder.China's air-conditioning, refrigeration industry are after it experienced economic crisis low ebb in 2008 in recent years
Touch the bottom and bounce back up, go to the countryside in national Urbanization Construction, household electrical appliances within particularly 2013, save under the supports on policy such as Huimin subsidy, rapidly
Stabilize, the space of sustainable growth is provided for the application of silver solder.
Traditional soldering processes are to glue brazing flux with silk or strip brazing solder to use or preceding in advance with gas flux or heating
Brazing flux is coated on workpiece, solder consumption can not ensure, and welding shortcoming easily occur, the thing followed is to do over again, reprocess
Even scrap, cause the waste of brazing solder and raw material, increase manufacturing cost.In addition, solder glues brazing flux or coats pricker in advance
The process of agent, which is added, once welds preceding operation, adds process and operating time, and increases a variable in soldering processes, from
And influence the uniformity of welding and the stability of quality；Gas flux activity not enough, goes oxide film dissolving effect poor.Due to such a
Soldering processes complexity, low production efficiency, cost are high, be difficult the consumption of accurate control brazing flux, are added so often there is brazing flux
Many or non-uniform phenomenon, not only a large amount of waste brazing fluxes, and the remaining more difficult cleaning of brazing flux residue of postwelding workpiece surface are perishable
Joint；The individual level of operator is depended on other joint quality more.
The control to brazing cost is increased with modernization manufacturing industry（Show as automatic welding and gradually replace human cost
Higher manual welding, the accurate control of brazing solder consumption）, and the attention rate of outer bound pair corporate environmental responsibility constantly adds
Greatly, medicine core brazing solder arises at the historic moment under this industrial upgrading demand.
Medicine core brazing solder is to be rolled to form by a certain proportion of powder brazing flux of cap copper braze-clad, it with it is traditional
Real core solder is compared, with advantages below：Medicine core brazing solder carries brazing flux, and the work of addition brazing flux is reduced during brazing operation
Sequence, has the advantages that flexible welding efficiency height, constituent adjustment, energy-saving material-saving, solder flux consumption is few, it is attractive in appearance to pollute small, appearance of weld,
Suitable for continuous automatic welding.
Current medicine core solder ratio shared in automatic welding is increasing, but tin in existing medicine core silver solder,
The constituent contents such as nickel, manganese there is processing difficulties when higher, the powder brazing flux of banding silver solder cladding predetermined ratio rolls processing
When it is easily broken the problems such as, it is difficult to be processed into medicine core solder.The fusion temperature of the higher silver-bearing copper tin solder of Theil indices can be fallen too low,
But fragility is larger, it is demonstrated experimentally that being more than when stanniferous amount is less than 12.5% in ag-cu solder with good ductility, stanniferous amount
When 12.5%, alloy plasticity is remarkably decreased, and the fusing of red brittleness, such as BAg45Cu35Sn20 solders occurs at 480 DEG C or so
Temperature is 550~600 DEG C, and it can only reluctantly be processed at a temperature of 450~520 DEG C, and it can not be still overcome through hot worked solder
Fragility, so the Theil indices in silver-colored tin solder are generally not more than 10%.Further, since being necessary to ensure that in wide arc gap component soldering
Solder has certain loading, and when preparing the solder skin of medicine core solder, if solder skin is blocked up will to increase difficulty of processing,
Also it have impact on application of the medicine core solder in wide-gap brazing.
The content of the invention
It is an object of the invention to provide a kind of high tenacity, alloy loading are big, it disclosure satisfy that efficient, automation soldering is needed
That wants carries the medicine core silver solder of increasing tougheness alloy.
To achieve the above object, the present invention can take following technical proposals：
The medicine core silver solder of the present invention for carrying increasing tougheness alloy, including silver-base solder crust and it is filled in the silver
Intracutaneous core powder outside base solder, the core powder is mixed by brazing flux, silver alloy, copper alloy.
The brazing flux is by least one of inorganic fluoride, potassium fluoborate, boric anhydride, borate, potassium fluoroaluminate, pure boron
Or two or more mix；
The silver alloy is the mixed powder that at least one of Ag powder and Cu, Ni, Si, Sn, Mn simple substance powder are constituted, or is Ag
With the intermediate alloy formed after at least one of Cu, Zn, Ni, Si, Sn, Mn element melting；
The copper alloy is the mixed powder of at least one of Cu and Zn, Ni, Si, Sn, Mn, P simple substance powder composition, or Cu with
The intermediate alloy formed after at least one of Zn, Ni, Si, Sn, Mn, P element melting.
The core powder accounts for the 8% ~ 35% of medicine core silver solder gross weight.
The percentage by weight of each composition is in the silver-base solder crust：Silver-colored Ag：1.5 ~ 65.0%, copper Cu：15.0~
56.0%th, zinc Zn：4 ~ 30.0%, tin Sn：0 ~ 6.0%, cadmium Cd：0 ~ 25.0%, nickel：0 ~ 6.0%, manganese Mn:0 ~ 8.0%, silicon Si：0~
5.0%th, trace element 0 ~ 1.0%；The trace element is derived from least one of Pd, Ga, In, Zr, Sb, Li, Re.
The wall thickness of the silver-base solder crust is 0.1~0.8 mm.
The preparation method of medicine core silver solder of the present invention is Conventional processing methods, can be processed into length for 100~
1000 mm solder bar, or turn to the ring bodies with hollow structure with elongated solder：Can for individual pen structure or
Spacing≤1.0mm between at least two circle helical annular structures of coiling vertically, adjacent ring.
The advantage of the invention is that with the addition of the metallic elements such as Sn, Ni, Si in brazing flux in the form of intermediate alloy, work as pricker
When expecting that alloying element content is relatively low in crust, still ensure that it has excellent processing characteristics, solder has good wetability
And mobility, while improving the intensity and low-temperature impact toughness and cracking resistance of weld seam, reduce ductile-brittle transition temperature.Simultaneously
On the premise of crust composition is not changed, the weld seam of different component can be obtained by the metal ratio being adjusted flexibly in core powder；
It can ensure that solder has enough loadings during soldering wide arc gap component.The present invention realizes brazing flux and conveniently, efficiently added in advance,
It is easy to assembly during with soldering, easily realize automated production, low cost and other advantages, be conducive to automate soldering processes popularization should
With.
Embodiment
Below by specific embodiment, the present invention will be further described in detail.
Embodiment 1
Of the present invention to carry increasing tougheness alloyed powder medicine core type silver solder, its preparation method is as follows：
a）Silver, copper, zinc are prepared in proportion and melting is carried out, the mm of Φ 50 bar-shaped BAg45Cu30Zn25 solders are cast into
Ingot casting, cut rising head and then prune ladle barrow descale it is stand-by；
b）Solder extrusion equipment is warming up to 460 DEG C, the good ingot casting of car is placed in Muffle furnace and preheated, preheating temperature is
470 DEG C, preheated ingot casting is put into the mould of extrusion equipment cylinder, the mm of thickness 5.0, width 8.5mm banding pricker is squeezed into
Material, and roll, cut, ultrasonic wave cleaning, drying, tape splicing are fabricated to the mm of thickness 0.2, width 7.5mm solder band；
c）Core powder is made up of borax, potassium fluoride, potassium fluoborate, boric acid, Cu-20Ni alloys and Cu-20Si alloys, each composition
Percentage by weight be：4% borax, 2% potassium fluoride, 8% potassium fluoborate, 25%Cu-20Ni alloys, 15%Cu-20Si alloys,
Surplus is boric acid；Powder size is 200 mesh, first medicine core powder is mixed with ball mill mixing machine, in 100 DEG C ~ 130 DEG C of low vacuum
200min is dried in drying box, is cooled down stand-by；
d）Solder band is rolled into metal tube（Silver-base solder crust）, core powder is added in metal tube in coiling process；
e）The medicine core solder finished product of size needed for the metal tube of the powder containing core is made up of rolling or drawing.
The finished product medicine core silver solder is adapted to soldering steel-steel, copper-copper alloy, the joint of steel-copper alloy.
Embodiment 2
Silver-base solder crust is same as Example 1, and core powder is by potassium fluoride, potassium fluoborate, boric anhydride, BAg56Cu31Sn10Mn3
Alloy, Cu-20Ni alloys and Cu-14P alloys are constituted, and the percentage by weight of each composition is：1% potassium fluoride, 7% potassium fluoborate,
33%BAg56Cu31Sn10Mn3 alloys, 30%Cu-20Ni alloys, 12%Cu-14P alloys, surplus is boric anhydride.
The finished product medicine core silver solder is adapted to the joint of copper brazing alloy.
Embodiment 3
Silver-base solder crust is same as Example 1, and core powder is closed by borax, potassium fluoride, potassium fluoborate, boric acid, Cu-20Ni
Gold, Cu-20Si alloys and BAg40Cu25Zn30.5Sn3Ni1.5 alloys are constituted, and the percentage by weight of each composition is：4% borax,
2% potassium fluoride, 8% potassium fluoborate, 25%Cu-20Ni alloys, 15%Cu-20Si alloys, 44%
BAg40Cu25Zn30.5Sn3Ni1.5 alloys, surplus is boric acid.
Embodiment 4
The medicine core silver solder constituted by the silver-base solder crust and core powder of the proportions in embodiment 1 passes through Reasonable adjustment
Mould, can be made into central diameter and is the mm of Φ 8.0 individual pen ring-type solder, and increase pressing technique.
Claims (2)
1. a kind of medicine core silver solder for carrying increasing tougheness alloy, including silver-base solder crust and it is filled in the silver-base solder crust
Interior core powder, it is characterised in that：The core powder is by potassium fluoride, potassium fluoborate, boric anhydride, BAg56Cu31Sn10Mn3 alloys, Cu-
20Ni alloys and Cu-14P alloys are constituted, and the percentage by weight of each composition is：1% potassium fluoride, 7% potassium fluoborate, 33%
BAg56Cu31Sn10Mn3 alloys, 30%Cu-20Ni alloys, 12%Cu-14P alloys, surplus is boric anhydride；
The core powder accounts for the 8% ~ 35% of medicine core silver solder gross weight；The wall thickness of the silver-base solder crust is 0.1~0.8mm.
2. the medicine core silver solder according to claim 1 for carrying increasing tougheness alloy, it is characterised in that：Outside the silver-base solder
The percentage by weight of each composition is in skin：Silver-colored Ag：1.5 ~ 65.0%, copper Cu：15.0 ~ 56.0%, zinc Zn：4 ~ 30.0%, tin Sn：0~
6.0%th, cadmium Cd：0 ~ 25.0%, nickel：0 ~ 6.0%, manganese Mn:0 ~ 8.0%, silicon Si：0 ~ 5.0%, trace element 0 ~ 1.0%；It is described micro
Element is derived from least one of Pd, Ga, In, Zr, Sb, Li, Re.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510269707.7A CN104907723B (en) | 2015-05-25 | 2015-05-25 | Carry the medicine core silver solder of increasing tougheness alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510269707.7A CN104907723B (en) | 2015-05-25 | 2015-05-25 | Carry the medicine core silver solder of increasing tougheness alloy |
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| Publication Number | Publication Date |
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| CN104907723A CN104907723A (en) | 2015-09-16 |
| CN104907723B true CN104907723B (en) | 2017-08-25 |
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| CN201510269707.7A Active CN104907723B (en) | 2015-05-25 | 2015-05-25 | Carry the medicine core silver solder of increasing tougheness alloy |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105965175A (en) * | 2016-05-20 | 2016-09-28 | 浙江新锐焊接科技股份有限公司 | Low-silver brazing filler metal used for high-frequency brazing of four-way valve |
| CN106346165B (en) * | 2016-08-30 | 2019-02-05 | 郑州机械研究所 | A kind of high tin silver solder and preparation method thereof |
| CN106271191B (en) * | 2016-08-31 | 2018-09-21 | 郑州机械研究所有限公司 | A kind of high-strength low temperature composite soldering of green and preparation method thereof |
| CN111344105B (en) * | 2017-12-19 | 2022-05-13 | 郑州机械研究所有限公司 | In-situ synthesis metal coating flux-cored silver solder and preparation method, welding method and connector thereof |
| CN108788534A (en) * | 2018-05-15 | 2018-11-13 | 雷山县弘悦银饰有限责任公司 | A kind of silver jeweleries welding rod production method |
| CN109202331A (en) * | 2018-11-01 | 2019-01-15 | 江苏科技大学 | A kind of medicine core silver solder with excellent fluidity |
| CN113579559A (en) * | 2021-09-14 | 2021-11-02 | 中机智能装备创新研究院(宁波)有限公司 | Flux-cored silver solder with indium protective layer and preparation method |
| CN114193026A (en) * | 2021-12-30 | 2022-03-18 | 郑州机械研究所有限公司 | High-silver brazing filler metal for welding pure silver jewelry and preparation method thereof |
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| CN102935562A (en) * | 2012-12-10 | 2013-02-20 | 郑州机械研究所 | Metal granular reinforced aluminum flux cored wire |
| CN103612032A (en) * | 2013-11-08 | 2014-03-05 | 上海龙烁焊材有限公司 | Sheath-coated flux-cored brazing wire and production method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2011053506A1 (en) * | 2009-10-26 | 2011-05-05 | Lucas-Milhaupt, Inc. | Low silver, low nickel brazing material |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102240870A (en) * | 2011-05-20 | 2011-11-16 | 杭州华光焊接新材料股份有限公司 | Multielement rare-earth silver solder |
| CN102513726A (en) * | 2011-12-22 | 2012-06-27 | 佛山市益宏焊接有限公司 | Silver-based flux-cored wire and manufacturing method thereof |
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| CN104907723A (en) | 2015-09-16 |
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Address after: 450001 science avenue of Zhengzhou high tech Industrial Development Zone, Zhengzhou, Henan Province, No. Patentee after: ZHENGZHOU RESEARCH INSTITUTE OF MECHANICAL ENGINEERING Co.,Ltd. Address before: Fengyang high tech Industrial Development Zone, Henan province Zhengzhou city 450001 Street No. 10 Patentee before: Zhengzhou Research Institute of Mechanical Engineering |
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Effective date of registration: 20191219 Address after: 315700 8 / F, 1111 Tian'an Road, damuwan new town, Xiangshan County, Ningbo City, Zhejiang Province Patentee after: China Machinery Intelligent Equipment Innovation Research Institute (Ningbo) Co.,Ltd. Address before: 450001 science avenue of Zhengzhou high tech Industrial Development Zone, Zhengzhou, Henan Province, No. Patentee before: ZHENGZHOU RESEARCH INSTITUTE OF MECHANICAL ENGINEERING Co.,Ltd. |
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Address after: 315700 no.929 Binhai Avenue, Danxi street, Xiangshan County, Ningbo City, Zhejiang Province (main building) 2002 Patentee after: Ningbo Intelligent Machine Tool Research Institute Co., Ltd. of China National Machinery Institute Group Address before: 8 / F, 1111 Tian'an Road, damuwan new town, Xiangshan County, Ningbo City, Zhejiang Province 315700 Patentee before: China Machinery Intelligent Equipment Innovation Research Institute (Ningbo) Co.,Ltd. |