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EP0209366A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method for padding a copper alloy material upon a base of aluminum metal or aluminium alloy using laser beam oscillating transversely to its tracking direction

Assignee: Toyota Motor Corp
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Filing: 1986-07-16
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Granted: —
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Expires: 2006-07-16
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Abstract

Abstract In this method for padding, a layer of a copper type alloy material in powdered form is laid upon a portion of a base of aluminum type metal which is to be padded. Then a laser beam, concentrated to a spot from about 0.5 mm to about 2.0 mm in diameter with an output density of from about 80 watt/mm 2 to about 20,000 watt/mm 2 , is irradiated upon this layer of powdered copper type alloy material upon the base of aluminum type metal. The laser beam and the base of aluminum type metal are relatively moved in a relative longitudinal direction at a longitudinal speed of from about 100 mm per minute to about 3000 mm per minute; and they are also reciprocatingly moved in a relative direction substantially transverse to the longitudinal direction at an transverse oscillating frequency of above about 80 Hz. Thereby, good padding efficiency is obtained. The copper type alloy material may initially be applied as a powder including a binder and then be dried, before the laser irradiation; or it may be applied automatically substantially during the laser irradiation.

Inventors

  • 👤 Minoru Kawasaki
  • 👤 Kazuhiko Mori

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-23 20:38
CPC Classifications
C; C23; C23C; C23C26/00; B; B22; B22F; B22F10/00; B22F10/20; B22F10/28; B22F10/30; B22F10/36; B23; B23K; B23K26/00; B23K26/20; B23K26/32; B23K26/34; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/302; B29; B29C; B29C64/00; B29C64/10; B29C64/141; B29C64/153; B22F10/32; B22F10/322; B22F12/00; B22F12/40; B22F12/44; B22F12/49; B23K2103/00; B23K2103/08; B23K2103/10; B23K2103/12; B23K2103/18; Y; Y02; Y02P; Y02P10/00; Y02P10/25

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 182 words
A method for padding a copper type alloy material upon a base of aluminum type metal, comprising the steps of: (a) laying a layer of thickness of approximately 0.2 mm to 0.5 mm of said copper type alloy material in powdered form upon a portion of said base of aluminum type metal which is to be padded; (b) irradiating a laser beam, concentrated to a spot from about 0.5 mm to about 5.0 mm in diameter with an output density of from about 80 watt/mm 2 to about 20,000 watt/mm 2 , upon said layer of said powdered copper type alloy material upon said portion of said base of aluminum type metal; (c) relatively moving said laser beam and said base of aluminum type metal in a relative longitudinal direction at a longitudinal speed of from about 100 mm per minute to about 3000 mm per minute; and: (d) relatively reciprocatingly moving said laser beam and said base of aluminum type metal in a relative direction substantially transverse to said longitudinal direction at an transverse oscillating frequency of above about 80 Hz.
Claim 2
Independent Claim 182 words
A method for padding a copper type alloy material upon a base of aluminum type metal, comprising the steps of: (a) laying a layer of thickness of approximately 0.2 mm to 0.5 mm of said copper type alloy material in powdered form upon a portion of said base of aluminum type metal which is to be padded; (b) irradiating a laser beam, concentrated to a spot from about 0.5 mm to about 5.0 mm in diameter with an output density of from about 80 watt/mm 2 to about 20,000 watt/mm 2 , upon said layer of said powdered copper type alloy material upon said portion of said base of aluminum type metal; (c) relatively moving said laser beam and said base of aluminum type metal in a relative longitudinal direction at a longitudinal speed of from about 100 mm per minute to about 3000 mm per minute; and: (d) relatively reciprocatingly moving said laser beam and said base of aluminum type metal in a relative direction substantially transverse to said longitudinal direction at an transverse oscillating frequency of above about 80 Hz.
Claim 3
Dependent Claim 38 words
A method for padding according to claim 1, wherein said copper type alloy material is, in step (a), applied as a powder including a binder and is then dried, before the performance of steps (b), (c), and (d).
Claim 4
Dependent Claim 27 words
A method for padding according to claim 1, wherein said copper type alloy material is applied automatically substantially during the performance of steps (b), (c), and (d).

References Cited (Backward Citations)

DE2740569A1 Cited
FR2385810A1 Cited

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