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Manufacturing method of magnesium vibration plate for audio and magnesium vibration plate for audio

A manufacturing method and vibration plate technology, which are applied in the manufacture of magnesium vibration plates for audio and in the field of magnesium vibration plates for audio, can solve problems such as easy rusting, and achieve the effect of excellent rust resistance and good acoustic characteristics

Active Publication Date: 2020-09-15
TODA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, although the magnesium substrate has the above advantages, it has the disadvantage of being prone to rust

Method used

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  • Manufacturing method of magnesium vibration plate for audio and magnesium vibration plate for audio
  • Manufacturing method of magnesium vibration plate for audio and magnesium vibration plate for audio
  • Manufacturing method of magnesium vibration plate for audio and magnesium vibration plate for audio

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] A sample of a magnesium substrate formed into a dome-shaped vibrating plate with a diameter of 25 mm was prepared using a plate material having a thickness of 45 μm (0.045 mm).

[0070] The sample was subjected to an antirust treatment step in an airtight container under the conditions described below to form a hydroxide layer on the surface of the magnesium substrate. In the present Example 1, a magnesium substrate having a hydroxide layer having a thickness of 3 μm formed on both surfaces thereof was obtained.

[0071] (Reaction conditions)

[0072] Reaction requirement: 10 mass % sodium hydroxide aqueous solution

[0073] Reaction temperature: 150°C

[0074] Reaction pressure: 10 atmospheres (high pressure condition)

[0075] Response time: 5 hours

[0076] Reaction device: airtight container made of stainless steel

[0077] The thickness of the magnesium substrate before the antirust treatment step was 45 μm (0.045 mm), and the thickness of the magnesium substr...

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Abstract

Provided is a method capable of efficiently manufacturing an acoustic magnesium diaphragm exhibiting excellent rustproof performance and having excellent acoustic characteristics. According to the present invention, a rustproof processing step for forming a hydroxide layer 2 on a surface of a magnesium base material 1 under a high pressure condition of approximately 1.1-350 atm is performed in a sealed container, so that the hydroxide layer 2 which is dense and has a high hardness can be formed on the surface of the magnesium base material 1. Accordingly, the magnesium base material 1 is thinned and the hardness thereof is improved through the rustproof processing, and thus, increase in the weight of the magnesium base material 1 can be suppressed. Therefore, an acoustic magnesium diaphragm having acoustic characteristics which are improved by achieving reduction in weight and increase in surface hardness can be manufactured.

Description

technical field [0001] The present invention relates to a manufacturing method of a magnesium diaphragm for acoustics capable of efficiently manufacturing a magnesium diaphragm for acoustics that is light in weight and has high surface hardness, acoustic characteristics, and excellent anti-rust performance, and a magnesium diaphragm for audio. Background technique [0002] Various materials such as aluminum, titanium, magnesium, paper, and plastic are used as the material for the acoustic diaphragm. Among these materials, magnesium is the lightest and has moderate hardness as a practical metal material, and has excellent characteristics of high vibration attenuation. Therefore, a magnesium base material containing magnesium or a magnesium-based alloy is preferably used as a material for an acoustic diaphragm. When a material containing a magnesium base material is used, it is possible to obtain an acoustic diaphragm having the feature of exhibiting good acoustic characteris...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R7/02C23C22/60H04R31/00
CPCC23C22/60H04R7/02H04R31/00
Inventor 铃木七代铃木知之加藤新次郎原田和夫小西藤作铃木君江
Owner TODA CO LTD