Strain Tempering（KRK法）に関する研究（第2報）線引工程への適用

抄録

As has been reported in the foregoing papers, the steel wire subjected to patenting or cold worked remarkably increases its strength by K.R.K. Process. The present paper deals with the effectiveness of the process when it is applied to a wire, patented and then 86.7% reduced in 10 steps by ordinary drawing. Results obtained are as follows. The increase of strength of wire by KRK process depends upon the reduction percentage of the wire after patenting. As this percentage increases by successive drawing, the elevation of strength of wire after the treatment increases also. If KRK process is successively applied to the wire after every drawing, the elevation of strength in each time diminishes as the number of application of the process increases, and consequently the difference of strength between that of the wire thus treated and that of the wire reduced without the treatment increases at first and then decreases. Therefore the effective application of the process to the drawing of the patented wire is to apply the process successively in the first or last few steps of the reduction.