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Patent Searching and Data


Title:
METHOD FOR RECOVERING SOLDER
Document Type and Number:
Japanese Patent JP2002226922
Kind Code:
A
Abstract:

To provide a method for recovering solder containing Sn from a device such as a circuit board without heating the device to a high temperature.

In the method for recovering solder containing an Sn element from a device made by using the solder, by cooling treatment where the device is exposed to a low temperature, β-Sn is transited to α-Sn to collapse the solder, and the device and solder are fractionated. The cooling treatment is performed preferably at a low temperature of -90 to -10°C. Further, vibration is preferably applied to the device at least either in the middle of the cooling treatment or in a stage after the cooling treatment. The recovery method is suitably used when the device is a circuit board.


Inventors:
YAMAZAKI HIKOHITO
Application Number:
JP2001021980A
Publication Date:
August 14, 2002
Filing Date:
January 30, 2001
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
B23K1/018; C22B1/00; C22B7/00; C22B25/06; (IPC1-7): C22B7/00; B23K1/018; C22B1/00
Attorney, Agent or Firm:
Kojima Kiyoji