Building-up and Hard Surfacing by Welding

Abstract

The author describes the process of using fusion welding for renewing worn or corroded parts and points out that it can equally well form part of the original design for many structures. The characteristics of the various welding processes are considered from the point of view of the materials with which they may be concerned, and the features of the metallic arc process are considered in some detail, since it has by far the largest scope at the present time. Some illustrations of the type of weld deposit practicable are considered, and the more limited developments in the metals of non-ferrous metals and “super-hard” alloys are referred to. It is shown that a very wide variety of commercial products is available for the process, particularly in the direction of electrodes for metallic arc welding and that information as to alloy compositions used, and their response to fusion with different parent metals, is lacking.