| 摘要 |
PURPOSE:To accelerate heating and melting by converting mechanical oscillation energy using ultrasonic energy into heat energy, shortening a welding time, improving strength of a welded position and making an external appearance after welding beautiful, by making use of zinc oxide whisker for a welding position. CONSTITUTION:Zinc oxide whisker 1 is used for a welding position as an ultrasonic welding material. Since the zinc oxide whisker 1 is in a form of a tetrapot of three-dimensional structure, has high specific gravity (about 5.8) to such an extent as to become unusual among metallic oxides and is a semiconductive single crystal having piezoelectric properties, when ultrasonic energy is absorbed, it is converted into heat energy highly efficiently. Therefore, in addition to heating and melting of the holding material itself or the material itself to be welded heating energy of the zinc oxide whisker is applied highly efficiently to the ultrasonic welding material 2 or a material to be welded and making ultrasonic welding into high quality and high efficiency becomes possible. With this construction, fusibility, an external appearance after fusing and fusing strength can be improved. |
