流動層パテンティング処理鋼線の諸性質

抄録

In order to improve the drawability of wires and wire rods and to obtain the desirous mechanical properties of drawn wires, lead patenting has long been utilized to practical use. There are, however, some problems about environmental hygiene in the works and environmental pollution in the cause of molten lead. As a means of solving those problems, the fluidized bed patenting method has been studied and developed.
Under the various conditions of fluidized bed temperature, air velocity and cooling time in fluidized. bed, experiments on cooling of heated wires and wire rods in fluidized bed have been carried out. Excellent mechanical properties of the materials patented in fluidized bed, as good as those in lead bath can be obtained by optimization of such factors as fluidized bed temperature, air velocity, cooling time in fluidized bed and austenitizing temperature. The fluidized bed patenting can be successfully applied to the materials from 1 to 11 mm in diameter. The scattering of mechanical properties of the materials patented in fluidized bed is the same as or less than that in lead bath. The drawability of the materials patented in fluidized bed is the same as that in lead bath.