This study was set up to examine selected aspects of
the knowledge of welding metallurgy that is a part of the
background of present teacher educators who teach welding
courses for Industrial Arts majors.
Specifically this study was made to answer the following
questions:
1. What knowledge is now possessed...
The use of consumable -electrode arc melting as a production technology
is growing. An advantageous feature of the process is the avoidance of ingot
contamination by soluble crucible materials. This is accomplished by the
expedient of employing a chilled metal crucible. As might be expected, the
thermal balance under these...