Title:
INSPECTION METHOD OF SHOULDER PART OF TUBE AND ITS DEVICE
Document Type and Number:
Japanese Patent JP3047301
Kind Code:
B2
Abstract:
PURPOSE: To inspect the quality of the bonded part between a tube body and its shoulder part automatically and exactly.
CONSTITUTION: If the bonded part 8 between a tube body 1 and its shoulder part 3 is perfectly welded, the ultrasonic wave introduced into the bonded part from a generator 18 is not guided outside of the tube body 1 or is guided outside only in attenuated low acoustic pressure, whereby the bonded part 8 is judged excellent. On one hand, if a gap is existing in the bonded part 8, the ultrasonic wave passes through the gap and is inspected by a receiver 22 outside of the tube T, whereby said bonded part 8 is judged defective.
Inventors:
Tsutomu Maruyama
Masao Suzuki
Takeo Sakaguchi
Susumu Yoshida
Masao Suzuki
Takeo Sakaguchi
Susumu Yoshida
Application Number:
JP4441491A
Publication Date:
May 29, 2000
Filing Date:
February 15, 1991
Export Citation:
Assignee:
Kyodo Printing Co., Ltd.
International Classes:
B29C65/82; G01M3/24; B29L23/00; (IPC1-7): B29C65/82; G01M3/24
Domestic Patent References:
| JP50117485A | ||||
| JP219899B2 |
Attorney, Agent or Firm:
Keisuke Watanabe (2 outside)