| 摘要 |
PURPOSE:To improve the vibrating performance of a head shell, by using an expanded metal to form the head shell. CONSTITUTION:A head shell 6 is formed with an expanded metal such as Fe, SnS, Ti, Ni, Al, etc. In the case of an expanded metal 7 of Ni. The Ni powder body is mixed to a parent body like rubber, etc. which is burnt and evaporated. The rubber burnt in a blast furnace of a high temperature is evaporated, and the Ni metals are coupled to each other. Thus the metal 7 is obtained. It is possible to control the size of an air bubble 8 by setting previously the forming conditions. |
