| 摘要 |
<p>PURPOSE:To obtain vibration damping steel sheet superior in vibration damping properties, weldability and adhesive strength, by a method wherein a resin layer obtained by dispersing conductive metallic powder which is softer than a metallic sheet is interposed between the two metallic sheets, a resin film whose thickness is thinner than the diameter of a metallic particle is used and the same is pressurized at the melting and softening temperature of the resin or higher. CONSTITUTION:A resin layer 2 obtained by dispersing conductive metallic powder which is softer than both sides metallic sheets is interposed between the two metallic sheets 1, 1', a resin film whose thickness is thinner than the diameter of a metallic particle 3 is used and both the metallic sheets 1, 1' are electrified through the conductive metallic powder 3. In this instance, a pressurizing and adhesive processes are performed at the melting temperature of the resin or higher. When the resin is pressurized under a state where the resin is sufficiently soft, the resin 2 among the steel sheets 1, 1' and conductive powder 3 is removed, the conductive powder 3 is deformed with pressurizing force and adhesion is completed. A preferable thickness is 1mum-1000mum, when the resin thickness is that or thinner, the title metallic sheet is deficient in vibration damping properties and when the thickness is thicker than that, it is uneconomical and causes sometimes generation of blisters due to evaporation of the resin at the time of welding. In addition, the diameters of the particles constituting the conductive powder are large than the resin thickness, which are for preferably 1.05 times as long as that of the resin thickness or more.</p> |
