MODERN WELDING

WELDING IS THE PROCESS OF UNITING TWO METALS BY ELIMINATING THE INTERFACE BETWEEN THEM. TRADITIONALLY, THIS HAS BEEN DONE BY A CASTING OPERATION, WITH FILLER METAL POURED INTO THE JOINT. FUSION WELDING STILL BULKS LARGE TODAY, BUT ADDED TO THE CONVENTIONAL ELECTRIC ARC THERE ARE NOW PLASMA ARCS, RESISTIVE SLAGS, AND HIGH-ENERGY BEAMS. MOREOVER, SO-CALLED SOLID-STATE WELDING, HIGH-FREQUENCY WELDING IN WHICH THE METAL PIECES ARE HEATED TO A PLASTIC (BUT STILL SOLID) STATE, THEN SQUEEZED TOGETHER. ANOTHER SOLID-STATE WELDING METHOD IS FRICTION WELDING IN WHICH TWO SURFACES TO BE JOINED ARE RUBBED RAPIDLY TOGETHER AND UNDER CONSIDERABLE PRESSURE. THE FRICTION BETWEEN THEM GENERATES THE NECESSARY TEMPERATURE FOR WELDING. PRESSURE BONDING AND EXPLOSIVE JOINING MAY ALSO BE USED.

  • Supplemental Notes:
    • No 66, pp 22-34, 2 FIG, 10 PHOT
  • Authors:
    • Martin, D C
  • Publication Date: 1967-6

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Filing Info

  • Accession Number: 00216202
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jan 16 1994 12:00AM