公开(公告)号：US20040231136A1

公开(公告)日：2004-11-25

申请号：US10843587

申请日：2004-05-12

申请人： PIONEER CORPORATION, TOHOKU PIONEER CORPORATION

发明人： Hiroyuki Tomiyama ,  Masatoshi Sato ,  Yoshimi Kudo ,  Yuichi Kasahara

IPC分类号： H04R001/00

CPC分类号： H04R31/003 ,  B21B1/40 ,  B21B3/00 ,  B21B45/004 ,  C22F1/06 ,  H04R2307/027 ,  Y10T29/49002 ,  Y10T29/49005 ,  Y10T29/4908 ,  Y10T156/1052 ,  Y10T156/108 ,  Y10T156/1089

摘要： In a rolling process, the level of rolling performed by a rolling mill for one operation is set to 1 nullm to 20 nullm. A magnesium substrate is rolled by rollers while being heated by a thermostatic chamber. As a result, there is manufactured a high-quality magnesium sheet which is less susceptible to influence of oxidation, which realizes a high internal loss, prevention of a drop in sensitivity, and low distortion, and which has a thickness of 30 nullm to 100 nullm. Further, as a result of the magnesium sheet being formed into a semi-dome shape or a dome shape, the sheet can be inexpensively manufactured as a speaker for high-tone playback. In particular, in the case of a magnesium diaphragm into which a dome section and an edge section are integrally formed, high-quality sound can be played back in a high frequency range without involvement of a drop in sensitivity.

摘要翻译： 在轧制过程中，通过一次操作的轧机进行的轧制水平设定为1μm至20μm。 在通过恒温室加热的同时，通过辊轧制镁基材。 结果，制造了不易受氧化影响的高品质镁片，其实现了高的内部损耗，防止灵敏度降低和变形小，并且具有30μm至100μm的厚度 妈妈 此外，由于镁片形成半圆顶形状或圆顶形状，所以可以廉价地制造片材作为用于高音色再现的扬声器。 特别地，在将圆顶部分和边缘部分整体形成的镁膜片的情况下，可以在高频范围内回放高品质的声音，而不会引起灵敏度下降。