CS261099B1 - Method of tube bimetals welding by pressure in cold condition - Google Patents
Method of tube bimetals welding by pressure in cold condition Download PDFInfo
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- CS261099B1 CS261099B1 CS874626A CS462687A CS261099B1 CS 261099 B1 CS261099 B1 CS 261099B1 CS 874626 A CS874626 A CS 874626A CS 462687 A CS462687 A CS 462687A CS 261099 B1 CS261099 B1 CS 261099B1
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Abstract
Riešenie spadá do oblasti zvárania bimetalov tlakom za studená s cielom zlepšit mechanické a hlavně elektrické vlastnosti spoja. Podstatou riešenia je, že na zvárané kovy sa počas zvárania tlakom za studená posobí ultrazvukom s frekvenciou 10 kHz až 30 kHz a amplitudou 25 um až 35 μΐη. Riešenie je možné využit hlavně v elektrotechnickom priemysle.The solution is in the field of bimetal welding cold pressures to improve mechanical and mainly electrical properties joint. The essence of the solution is that the welded metals during cold welding ultrasound at 10 kHz up to 30 kHz and with an amplitude of 25 µm to 35 µΐη. The solution can be used mainly in electrical engineering industry.
Description
Riešenie spadá do oblasti zvárania bimetalov tlakom za studená s cielom zlepšit mechanické a hlavně elektrické vlastnosti spoja. Podstatou riešenia je, že na zvárané kovy sa počas zvárania tlakom za studená posobí ultrazvukom s frekvenciou 10 kHz až 30 kHz a amplitudou 25 μια až 35 ftm. Riešenie je možné využiť hlavně v elektrotechnickom priemysle. 2 ř*·' ÍP- 261099 261099The solution is in the field of cold bimetal welding to improve the mechanical and mainly electrical properties of the bond. The essence of the solution is that the welded metals are subjected to ultrasound at a frequency of 10 kHz to 30 kHz and an amplitude of 25 to 35 ftm during cold welding. The solution can be used mainly in the electrical industry. 2 * '-P-261099 261099
Vynález sa týká sposobu zvárania tlakom za studená rúrkových bimetalov, najmá s kubickou plošné centrovanou mriežkou, ako sú například Cu, AI, Ag, Au, Pt, Zr, Ti, Cd, Be, Pd, Sn a niektoré ich zliatiny.BACKGROUND OF THE INVENTION The present invention relates to a process for cold pressure welding of tubular bimetals, particularly with a cubic centered grid such as Cu, Al, Ag, Au, Pt, Zr, Ti, Cd, Be, Pd, Sn and some of their alloys.
Fyzikálny princip zvárania tlakom za studená spočívá v přiblížení zváraných materiálov na vzdialenosť blízku mriežkovému parametru zváraných kovov s následným vznikom zvarového spoja posobením medziatómových sil. Tento efekt je podmienený dostatočne velkým měrným tlakom a redukciou v mieste kontaktu zváraných materiálov. Pri zhotovení zvarového spoja bimetalu, například Cu—AI v tvare rúrky, ktorej vonkajší plášť je z materiálu AI a vnútorné puzdro· z materiálu Cu sú požadované parametre zvárania tlakom za studená, ako sú měrný tlak a pretvorenie, zabezpečené upnutím zváraných súčiastok v· přípravku, ktorý neumožňuje změnu vonkajších rozmerov bimetalu a vhodné zvoleným presahom pretláčacieho nástroja voči otvoru v Cu-puzdre.The physical principle of cold pressure welding is to approach welded materials to a distance close to the lattice parameter of the welded metals, followed by the formation of a welded joint by positioning the inter-atomic forces. This effect is caused by sufficiently high specific pressure and reduction at the point of contact of the welded materials. When making a bimetal weld joint, such as a Cu-Al tube-shaped, whose outer casing is made of AI material and an inner Cu housing, the required cold pressure welding parameters, such as specific pressure and deformation, are provided by clamping the welded parts in the device. , which does not allow changing the outer dimensions of the bimetal and suitable by the selected overlap of the extrusion tool relative to the opening in the Cu-housing.
Sairrtné vytvorenie zvarového· spoja sa realizuje přitlačením pretláčacieho nástroja v smere pozdížnej osi zváraných súčiastok upnutých s přípravku. Takto vyhotovené zvarové spoje vykazujú určité nedostatky z hradiska naviazania zváraných materiálov, čo obmedzuje ich použitie na případy, kde nie sú důležité elektrické parametre zvarového spoja.The welded joint is formed by pressing the extrusion tool in the direction of the longitudinal axis of the welded parts fastened to the fixture. The weld joints produced in this way show some drawbacks from the bonding of the welded materials, which limits their use to cases where the electrical parameters of the weld joint are not important.
Uvedené nedostatky podstatné odstraňuje spůsob zvárania rúrkových bimetalov tlakom za studená podía vynálezu, ktorého· pod- statou je, že na zvárané kovy sa počas zvárania za studená působí ultrazvukom s frekvenciou 10 kHz až 30 kHz a amplitúdou 25 /tm až 35 /tm. Výhodou spůsobu podía vynálezu je, že sa dosiahne podstatné zlepšenie naviazania zváraných materiálov·. Podstatné sa zlepší mechanická pevnosť a elektrické parametre, hlavně přechodový odpor spoja v důsledku rozrušenia vrstvy oxidov v mieste kontaktovania a vzájomného mechanického premiešania zváraných materiálov.The above mentioned drawbacks are substantially eliminated by the method of cold welding of tubular bimetals according to the invention, the principle of which is that ultrasound at 10 kHz to 30 kHz and at amplitude 25 to 35 microns are applied to the welded metals during cold welding. An advantage of the process according to the invention is that a substantial improvement in the bonding of the welded materials is achieved. It is essential to improve the mechanical strength and electrical parameters, in particular the transition resistance of the joint due to the destruction of the oxide layer at the point of contact and the mechanical mixing of the welded materials with one another.
Na priloženom výkrese je znázorněný schematický prierez jedného z možných zariadení na vykonávania spůsobu podía vynálezu.The accompanying drawing shows a schematic cross-section of one of the possible apparatuses for carrying out the process according to the invention.
Pri realizácii spůsobu podía vynálezu sa zvárané diely 1, 2 vložia do objímky 3 zariadenia na zváranie tlakom za studená, ktorého pretláčací nástroj 4 je spojený s ultrazvukovým meničom 6 prostredníctvom ultrazvukového medzičlena 5. Ultrazvukový měnič 6 kmitá frekvenciou 20 kHz s amplitúdou 8 /tm. Kmitáme sa prevedie na pretláčací nástroj 4, ktorý kmitá frekvenciou 20 kHz s amplitúdou 30 /tm a súčasne působí na zváranie diely 1, 2 přítlačnou silou 3 500 N. V důsledku spolupůsobenia tlakovej sily a ultrazvukovej energie dochádza k rozrušeniu vrstvy oxidov v mieste kontaktovania zváraných dielov· 1, 2 a vzájomnému mechanickému premiešaniu materiálov.In carrying out the process of the invention, the welded parts 1, 2 are inserted into the sleeve 3 of the cold pressure welding apparatus, the extruder 4 of which is connected to the ultrasonic transducer 6 via an ultrasonic intermediate 5. The ultrasonic transducer 6 oscillates at a frequency of 20 kHz with an amplitude of 8 µm. The oscillation is converted to extrusion tool 4, which oscillates at a frequency of 20 kHz with an amplitude of 30 / tm and simultaneously acts to weld parts 1, 2 with a thrust force of 3,500 N. Due to the interaction of the compressive force and ultrasonic energy, the oxide layer is destroyed at the point of contact of the welded parts 1, 2 and mechanically mixing the materials together.
Sposob podía vynálezu je možné využiť predovšetkým v elektrotechníckom priemysle, pri náhradě médi hliníkom.The process according to the invention can be used in particular in the electrical engineering industry, in the replacement of aluminum medium.
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CS874626A CS261099B1 (en) | 1987-06-18 | 1987-06-18 | Method of tube bimetals welding by pressure in cold condition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CS874626A CS261099B1 (en) | 1987-06-18 | 1987-06-18 | Method of tube bimetals welding by pressure in cold condition |
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CS462687A1 CS462687A1 (en) | 1988-02-15 |
CS261099B1 true CS261099B1 (en) | 1989-01-12 |
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CS874626A CS261099B1 (en) | 1987-06-18 | 1987-06-18 | Method of tube bimetals welding by pressure in cold condition |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1646460B1 (en) * | 2003-07-09 | 2015-04-22 | Technische Universität Dresden | Annular composite workpieces and a cold-rolling method for producing said workpieces |
-
1987
- 1987-06-18 CS CS874626A patent/CS261099B1/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1646460B1 (en) * | 2003-07-09 | 2015-04-22 | Technische Universität Dresden | Annular composite workpieces and a cold-rolling method for producing said workpieces |
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CS462687A1 (en) | 1988-02-15 |
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