Breakfast over, Aunt Polly had family worship: it began with a prayer built from the ground up of solid courses of Scriptural quotations, welded
together with a thin mortar of originality; and from the summit of this she delivered a grim chapter of the Mosaic Law, as from Sinai.
"Pip, dear old chap, life is made of ever so many partings welded
together, as I may say, and one man's a blacksmith, and one's a whitesmith, and one's a goldsmith, and one's a coppersmith.
The involvement of factors such as welding machinery, which varies with the type of metal to be welded
and customer needs result in the demand for welding chemicals that can be used by the technologically advanced welding machinery and also manually.
Arc welding is a technique where metals are welded
using heat generated by an electric arc.
In general, the quality of a weld is characterized by parameters such as dimensions of penetration and structure of the material in the welded
However, ample cyclic life and fracture toughness evidence indicates that, when done according to governing specifications, in-process weld rework to castings that have been welded
, blended, and heat treated results in parts that will be dimensionally, physically, chemically, metallurgically, and structurally compliant with drawing requirements.
Samples of aluminium plates were welded
, and visually examined afterwards.
Ultrasonic welding joins the metal parts by applying the high frequency vibratory energy and moderate clamping pressure onto the interface area between the parts to be welded
. Since 1950s, it has been used in the manufacture of electronics, food packaging, electrical appliances, high-quality component sealants.
The residual stress analysis of thick welded
structure requires a lot of time and computer memory and should not be compared to those in thin welded
The two components to be welded
are first fixed in a fixture and driven together.
Metallographic sample of the welded
seam was prepared using standard mechanical polishing procedures and etched in HF: HN[O.sub.3]: [H.sub.2]O solution in volume ratio of 1: 3: 10.