抄録
This report, first, explains the measuring method of the shearing residual stress of fine wires. Then it shows the experimental data of the residual stress, measured by this method, of 1mm∅ nickel-silver wires which were straightened by die blades, and the relation between the residual stress and their mechanical properties.
Wire straightening by a single or combined rotary die blades produces in it the shearing residual stress which is nearly symmetrical to axis. In the outer layer of specimen the stress is 2-3kg/mm2 in any case, while in the inner part the opposite stress to the outer increases as the degree of straightening increases. Such residual stress is considered to have much effect on the following work of the wire. The distribution of the shearing residual stress correlates well with that of hardness of wires in section.
