Title:
SCREENING METHOD FOR CRACK
Document Type and Number:
Japanese Patent JPH03190699
Kind Code:
A
Abstract:
PURPOSE: To make a crack chipping extremely easily by acting an ultrasonic wave on the work of after slicing completion and promoting the progress of a crack.
CONSTITUTION: A work 1 is arranged in a dipping state into a cleaning tank 10 where the medium liquid 5 of a fleon liquid, etc. A crack 12 of the work 1 inside is progressed by acting the ultrasonic wave generated by an ultrasonic wave generation device 20 on this work 1. The crack 12 is thus made chipping 14 and separated from the work 1.
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Inventors:
MATSUMOTO KENICHI
Application Number:
JP33170389A
Publication Date:
August 20, 1991
Filing Date:
December 20, 1989
Export Citation:
Assignee:
FUJITSU LTD
International Classes:
B26F3/00; H05K3/00; (IPC1-7): B26F3/00; H05K3/00
Attorney, Agent or Firm:
Sadaichi Igita