Английский для сварщиков. Гричин С.В. - 169 стр.

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169
Welding a lengthwise seam in sheet metal either by abutting or
overlapping joints.
SELECTIVE BLOCK SEQUENCE:
A block sequence in which successive blocks are completed in a
certain order selected to create a predetermined stress pattern.
SERIES WELDING:
A resistance welding process in which two or more welds are made
simultaneously by a single welding transformer with the total current
passing through each weld.
SHEET SEPARATION:
In spot, seam, and projection welding, the gap surrounding the weld
between faying surfaces, after the joint has been welded.
SHIELDED WELDING:
An arc welding process in which protection from the atmosphere is
obtained through use of a flux, decomposition of the electrode
covering, or an inert gas.
SHOULDER:
See ROOT FACE.
SHRINKAGE STRESS:
See RESIDUAL STRESS.
SINGLE IMPULSE WELDING:
The making of spot, projection, and upset welds by a single impulse of
current. When alternating current is used, an impulse may consist of a
fraction of a cycle or a number of cycles.
SIZE OF WELD:
a. Groove weld
. The joint penetration (depth of chamfering plus the
root penetration when specified).
b. Equal leg fillet welds
. The leg length of the largest isosceles right
triangle which can be inscribed within the fillet weld cross section.
c. Unequal leg fillet welds
. The leg length of the largest right triangle
which can be inscribed within the fillet weld cross section.
d. Flange weld
. The weld metal thickness measured at the root of the
weld.
SKIP SEQUENCE:
See WANDERING SEQUENCE.
SLAG INCLUSION:
Non-metallic solid material entrapped in the weld metal or between the
weld metal and the base metal.
SLOT WELD:
A weld made in an elongated hole in one member of a lap or tee joint
joining that member to that portion of the surface of the other member

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