Indian Welding Journal

R. Purkayastha ¹

Affiliations
1 Indian Institute of Welding, IN

Abstract

High pressure water jets at 1400 to 3500 bar and small diameter 0.12 to 0.5 mm have been effectively used for cutting such materials as polymers, plastics, leather, corrugated boards, textile and other non-metal materials.

Full Text

     

R. Purkayastha ¹

Affiliations
1 Indian Oxygen Ltd., IN

Abstract

A large number of pure metals and alloys are used as filler material in brazing ; to make a choice of the best brazing material for a given application is, therefore, not easy. Broadly the selection will depend on the nature of the parent metals to be joined, the maximum working temperature of the final product and the brazing method proposed. Inside this broad choice, however, there may be many subsidiary factors such as economic considerations, limitations imposed by the fit of the joints or the degree of skill possessed by the available operators.

Full Text

     

R. Purkayastha ¹

Affiliations
1 Indian Oxygen Ltd., Calcutta, IN

Abstract

Metal Inert Gas (MIG) welding is a process in which a continuously fed wire electrode is passed through a nozzle in the welding torch where it picks up current from a contact tube and gets melted in an arc. The wire, as it comes out and the arc are shielded by an inert gas issuing out of the nozzle. The process has become very popular comparatively recently.

Full Text