Document Type and Number:
Japanese Patent JPH0334436
Kind Code:
B2
Abstract:
PURPOSE:To affect no influence due to heating on the fusion point with a glass cylinder and other zones by performing a welding so that no gap exists on the end face by forming the peripheral face of the engaging end part of two metal cylinders to be welded with engaging in taper shape and by pressing slightly in the axial direction. CONSTITUTION:The engaging end part 12 of the inner and outer cylinders 10, 11 is formed in taper shape, the taper face is brought into contact each other by pressing slightly in the axial direction so as to leave no gap on the end face 13 and the welding is performed by bringing the arc flame of microplasma welding method into contact toward the engaging part of said end face 13, in case of welding the end face 13 by fitting the metallic cylinder 11 of which a glass cylinder 6 is fused on one end and the metallic cylinder 10 having the same sized inner diameter as the outer diameter of said metallic cylinder 11 so as to almost coincide the end face 13 of both cylinder 11, 10. Due to no gap being existing on the engaging face of the inner and outer cylinders as per the above the influence of heating is not affected on the fusion point with the glass cylinder 6.
Inventors:
ARAKAWA ISAO
Application Number:
JP9250385A
Publication Date:
May 22, 1991
Filing Date:
April 30, 1985
Export Citation:
Assignee:
FUJITSU LTD
International Classes:
B23K33/00; B23K9/00; B23K9/02; B23K9/028; H01L23/02; H01L31/02
Next Patent: JPH0334437