Английский для сварщиков. Гричин С.В. - 155 стр.

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155
A forge welding process in which fusion is produced by heating in a
furnace and by applying pressure by means of dies.
DIP BRAZING:
A brazing process in which bonding is produced by heating in a molten
chemical or metal bath and by using a nonferrous filler metal having a
melting point above 800 °F (427 °C), but below that of the base metals.
The filler metal is distributed in the joint by capillary attraction. When
a metal bath is used, the bath provides the filler metal.
DIRECT CURRENT ELECTRODE NEGATIVE (DCEN):
The arrangement of direct current arc welding leads in which the work
is the positive pole and the electrode is the negative pole of the
welding arc.
DIRECT CURRENT ELECTRODE POSITIVE (DCEP):
The arrangement of direct current arc welding leads in which the work
is the negative pole and the electrode is the positive pole of the
welding arc.
DISCONTINUITY:
An interruption of the typical structure of a weldment, such as lack of
homogeneity in the mechanical, metallurgical, or physical
characteristics of the material or weldment. A discontinuity is not
necessarily a defect.
DRAG:
The horizontal distance between the point of entrance and the point of
exit of a cutting oxygen stream.
DUCTILITY:
The property of a metal which allows it to be permanently deformed,
in tension, before final rupture. Ductility is commonly evaluated by
tensile testing in which the amount of elongation and the reduction of
area of the broken specimen, as compared to the original test specimen,
are measured and calculated.
DUTY CYCLE:
The percentage of time during an arbitrary test period, usually 10
minutes, during which a power supply can be operated at its rated
output without overloading.
EDGE JOINT:
A joint between the edges of two or more parallel or nearly parallel
members.
EDGE PREPARATION:
The contour prepared on the edge of a joint member for welding.
EFFECTIVE LENGTH OF WELD:

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