Patent
Manufacturing method of diaphragm for speaker
Reads0
Chats0
TLDR
In this paper, a diaphragm for a speaker is set into a high temperature high pressure processing device, a cover is closed and the inside of the device is evacuated, the inside device is replaced by a special pressure nitrogen gas, and next, a special high-pressure nitrogen gas is filled and a temperature up is executed.Abstract:
PURPOSE:To obtain a TiN (titannitride) layer with high elastic ratio at a surface by processing, with high temperature and high pressure, a titanium foil and a titanium alloy foil molded to a dome-shaped diaphragm shape, in a nitrogen gas atmosphere beforehand. CONSTITUTION:This material using a titanium alloy foil is molded to a dome-shaped diaphragm shape beforehand. Next, a surface at a titanium diaphragm is cleaned with an ultrasonic wave by fleon solution and an oily dust, etc., which are stuck at the surface, are removed. After that, after a diaphragm for a speaker is set into a high temperature high pressure processing device, a cover is closed and the inside of the device is evacuated, the inside of the device is replaced by a special pressure nitrogen gas and next, a special high pressure nitrogen gas is filled and a temperature up is executed. After preservation is executed by a special high temperature for a special time, temperature descends and pressure decreases and a processed body is removed. A process parameter of high temperature and high pressure processing by the method is shown in a figure. As shown in the figure by processing of the method, TiN (titannitride) layers 2 and 3 of a special thickness are formed at the surface of the titanium diaphragm 1, and a diaphragm with very high surface hardness and high elasticity can be obtained.read more
Citations
More filters
Patent
Muffler member, and compressor with the same
Koki Kamiishida,Mitsuki Morimoto,Hirosuke Ogasawara,Hiromichi Taniwa,弘毅 上石田,光希 守本,洋佑 小笠原,弘通 谷和 +7 more
TL;DR: In this paper, the authors propose to reduce a noise level relative to a secondary resonance mode inside a muffler in an acoustic resonance mode of an outside space of the muffler, by dividing a space into first to fourth muffler spaces.
Patent
Stringed instrument made of titanium alloy
Sukenobu Matsuda,祐信 松田 +1 more
TL;DR: In this paper, the reverse plate is made of the titanium alloy selected out of metals such as stainless steel and duralumin, and the best instrument can be obtained which is the best in terms of weight reduction etc., because of the most lightweight and hardest characteristics in addition to improvement in sound effect such as sound volume.
References
More filters
Patent
Manufacture of loudspeaker diaphragm
TL;DR: In this article, a diaphragm is formed on the surface of a titanium foil by executing a vacuum suction, raising a temperature in a ratio of 10 deg.C/min, leading nitrogen gas into a furnace as soon as a temperature reaches 820 deg.