JPH096333A - Musical instrument parts material - Google Patents

Abstract

PURPOSE: To obtain a material which does not induce sound distortion regardless of being wind instruments and stringed instruments, has a strength and is adequately usable for the accessories of musical instruments by using a specific metallic material. CONSTITUTION: Metal of W or Mo alone, an allay contg. 15 to 100wt.% W or Mo or intermetallic compd. of WC or MoC is used as heavy metals of >=2.0 in the ratio of the longitudinal sound velocity with respect to the propagation of sound to a transverse sound velocity. Infiltrated bodies or sintered compacts having the weight compsns. of 70 to 97W-1 to 20Cu-1 to 20Ni, 70 to 97W-1 to 20Fe-1 to 20Ni, 50 to 90W-Bal.Cu, 50 to 90W-Bal.Ag, 30 to 70WC-Bal.Cu, 30 to 70WC-Bal.Ag, W-0.5 to 3.0Ni-P, 70 to 97Mo-1 to 20Cu-Ni, 70 to 90Mo-1 to 20Fe-20Ni, 50 to 90Mo-Bal.Cu, 50 to 90Mo-Bal.Ag, 30 to 70MoC-Bal.Cu, 30 to 70MoC-Bal.Ag, Mo-0.5 to 3.0Ni-P are used as the alloys of these heavy metals.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a musical instrument component material used for a mouthpiece and a piston of a wind instrument, a cap of a rotary portion, an end pin of a large string instrument such as a contrabass and cello, and a peripheral component of an instrument such as an adjuster.

[0002]

2. Description of the Related Art Conventionally, as a material for such a musical instrument component, a material constituting a musical instrument body is usually used.
When the material cannot be used because of its structure, a material having good workability and easily available, for example, brass or iron was used.

However, in recent years, the influence of the structural members of the peripheral parts other than the main body part on the distortion of the sound emitted by the musical instrument has been reviewed, and as a countermeasure, for example, in the case of brass wind instruments, the thickness of that part Is used, Ag having a high specific gravity is used, and in the case of a contrabass, Ti is used because it does not generate a distorted sound as compared with iron.

[0004]

However, if the wall thickness is made thick as in the case of brass, it does not look good even if the sound quality does not change, and if it is made of silver, the speed of sound is low, so the performance is small. It has the drawback of being highly resistant to time and easily tired. Further, when Ti is used, since the specific gravity is small, the timbre becomes light and it is difficult to combine with a musical instrument.

Further, gold is another metal that does not interfere with the original tone color and sound quality of the musical instrument, but in this case too, the resistance to playing is created due to the low sound velocity, and it is very expensive.
In addition, there is a problem that it is too soft when the property as a structural material is required like the end pin.

An object of the present invention is to provide a material which can be suitably used as an accessory part of a musical instrument regardless of whether it is a wind instrument or a stringed instrument, without causing sound distortion and having strength.

[0007]

According to the present invention, a heavy metal having a ratio of longitudinal sound velocity to sound wave velocity to transverse wave sound velocity of 2.0 or more with respect to sound waves is a heavy tone color with almost no distortion sound to the sound of a musical instrument. In addition, it was completed based on the finding that it is suitable for accessory parts of musical instruments and supporting structural materials because it is also excellent in strength.

As a heavy metal having a ratio of longitudinal wave sound velocity to sound wave velocity to transverse wave sound velocity of 2.0 or more, W or Mo is used.
Can be used as the elemental metal, an alloy containing 15 to 100% by weight of W or Mo, or an intermetallic compound of WC or MoC.

As the alloy of these heavy metals, specifically, an infiltrated body or a sintered body having the following weight composition can be used.

70-97W-1-20Cu-1-20Ni 70-97Mo-1-20Cu-Ni 70-97W-1-20Fe-1-20Ni 70-97Mo-1-20Fe-20Ni 50-90W-Bal ． Cu 50-90 Mo-Bal. Cu 50-90W-Bal. Ag 50-90 Mo-Bal. Ag 30-70 WC-Bal. Cu 30-70 MoC-Bal. Cu 30-70 WC-Bal. Ag 30-70 MoC-Bal. Ag W-0.5 to 3.0Ni-P Mo-0.5 to 3.0Ni-P Particularly, in the case of a sintered body, it is finished by swaging or drawing after sintering and then machining.

[0011]

[Function] There are longitudinal waves and transverse waves in the speed of sound transmitted through metal. When the ratio of the speed of sound in longitudinal waves and transverse waves is taken, when the ratio of the speed of sound in transverse waves becomes large, smooth transmission of sound is disturbed and so-called distorted sound is generated. It will be easier to do. W and Mo have a longitudinal wave velocity / transverse wave velocity of 2.1, and iron is 1.8,
Less distorted sound than iron.

Therefore, heavy metals such as W and Mo are
When used as a musical instrument accessory, it does not interfere with the original tone color and sound quality of the instrument. Moreover, since the specific gravity is larger than iron and brass, it produces a heavy sound. Moreover, it has sufficient strength as a structural material. Further, the characteristics of this heavy metal are maintained even in carbides such as WC and MoC, and even in the case of alloys with other metals, it is 15 in terms of W and Mo.
If the alloy is alloyed by weight% or more, this acoustic characteristic is maintained.

[0013]

【Example】

Example 1 An example applied to an end pin of a contrabass will be described as an example of the present invention.

The W powder is pressure-molded and then subjected to electric sintering to 90
% W ingot having a relative density of 99.8% was swaged to a relative density of 99.8% and subjected to centerless processing and lathe processing to produce an end pin for a contrabass having a size of φ10 × 300.

For comparison, Fe, Ti and C having the same size are used.
Each of the u-made end pins was manufactured.

The results obtained when the lowest tone was played with these end pins attached are shown in Table 1, and W had the best timbre and tone quality.

[0017]

[Table 1] Example 2 A 65W-35Ag alloy trumpet mouthpiece was manufactured by a powder metallurgy sintering method.

For comparison, brass and Ag mouthpieces of the same size were also manufactured. As surface treatment, these were plated with Ag of 5 to 10 μm.

Using this mouthpiece, the scale of 2 octaves was repeated for 10 minutes, and the fatigue condition of the performer and the change in tone color were investigated.

As a result, when the 65W-35Ag alloy mouthpiece is used, the fatigue level of the performer is equivalent to that of brass, and the tone color is heavier than that of brass, but in the high range. The result is that
The Ag products showed stable sound quality without distortion, but were generally dark tones, had a high resistance, and had the greatest degree of fatigue for the performer.

[0021]

According to the present invention, the following effects can be obtained.

(1) It is possible to obtain an accessory member for a musical instrument that is as comfortable as the conventional one in terms of appearance.

(2) It can be molded into any shape, and the resistance to playing as an accessory to the musical instrument is reduced.

(3) The instrument itself becomes a heavy tone without distortion.

Claims (3)

[Claims] 1. A material for musical instrument parts made of a heavy metal having a ratio of longitudinal wave sound velocity to sound wave velocity to transverse wave sound velocity of 2.0 or more. 2. A heavy metal having a ratio of longitudinal wave sound velocity to sound wave velocity to transverse wave sound velocity of 2.0 or more is W or Mo.
2. The musical instrument component material according to claim 1, which is an elemental metal or an alloy containing 15% by weight or more of W or Mo. 3. A heavy metal having a ratio of longitudinal wave sound velocity to sound wave velocity to transverse wave sound velocity of 2.0 or more is WC or M.
The musical instrument component material according to claim 1, which is oC.