Metalurgija (Jan 2015)
Vacuum brazing of tools with a thin foil
Abstract
The paper deals with a study of vacuum brazing of two or more workpieces made of tool steel using a thin foil. In the first part the problem is described and some fundamentals of vacuum brazing are given. In the second part the experimental procedure used in this paper is described. In the present study, specimens of tool steel were used. The specimens, between which a thin nickel-base foil of 0,05 mm in thickness was inserted, were pressed together in different ways while they were being brazed in a vacuum furnace. The pressing force varied during the experimental work. At the end findings, conclusions, and guidelines for future work are given. It was found that the pressing force between two workpieces has a major influence on the vacuum brazing process and properties of a brazed joint.
