JPH02153033A - Metallic material for flute - Google Patents

Abstract

PURPOSE:To manufacture the title metallic material suppressing grain growth which forms a flute having good tone quality by regulating Ag to the essential components and adding specific ratios of Cu, Mn, Ti, Zr and Si thereto. CONSTITUTION:Ag is regulated to essential components and to which, by weight, 5 to 28% Cu and 0.05 to 1% of one or more kinds among Mn, Ti, Zr and Si are added to prepare a metallic material for a flute. By manufacturing a flute in the use of said metallic material, its softening and the coarsening of grain are suppressed, by which the flute having excellent tone quality particularly in the range from medium frequency to high frequency can be obtd.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an Ag alloy material for flutes containing Ag as a main component.

[Conventional technology]

Conventionally, materials for flutes include nickel silver alloys for popular products, Ag alloys for medium to high-end products, and Au alloys for high-grade products.

Among them, 90% A g -Cu alloy (coin silver L
Ag alloy-based flutes such as 92.5% Ag-Cu alloy (sterling silver) are gaining the most popularity as products of medium class and above.

[Problem to be solved by the invention]

Therefore, the general manufacturing process for Ag alloy flutes is to first cut, roll, and cut an ingot, and then process it into a round shape.
The end faces are welded and the pipe is drawn to make a vibrator, and this pipe is then processed into a flute through a predetermined process. During this process, the material is annealed several times to soften it.

In recent years, along with the development of non-destructive analysis and analysis techniques, sound analysis has been conducted through research into the materials and waveforms of so-called famous flutes, and research by the present inventors has also revealed the hardness of materials, crystal grains, etc. It has become clear that the size, direction, etc. of the sound are closely related to the sound.

However, since the annealing in the above-mentioned flute manufacturing process is usually repeated at 600 to 750'C, it softens the material and at the same time coarsens the crystal grains, which adversely affects the tone color.

Various attempts have been made to improve the tone, such as using Au plating or applying microscopic wave-like processing to the inner surface to change the flow of air when playing, but none of them have yielded a satisfactory tone. Not yet.

However, many people are dissatisfied with the tone of mass-produced flutes, and there is a need for a flute with a better tone.

[Means to solve problems]

The present invention has Ag as the main component and Cu in a weight ratio of 5 to 28.
% and one or more elements of Mn, Ti, Zr, and Si are added in a weight ratio of 0.05 to 1%,
During the flute manufacturing process, annealing, heating, cooling, and subsequent stabilization treatment can also suppress significant softening and coarsening of crystals, ideally controlling the crystal grain size to about 20 to 45 μm to produce a flute with good tone. Our goal is to provide the following.

The reason why the amount of Cu added to Ag is limited to 5 to 28% is that if less than 5% is added, it will be too soft and have insufficient strength as a flute, and if it exceeds 28% of the eutectic point. This is because the addition impairs workability and sharply reduces the corrosion resistance of Ag.

On the other hand, the amount of the four elements Mn, Ti5Zr, and Si added was 0.
The reason for limiting the amount to 0.05 to 1% is that addition of less than 0.05% is insufficient to suppress softening and coarsening of crystal grains, and addition of more than 1% inhibits workability such as pulling processing. This is because there is a risk of

〔Example〕

First example Agl, 894g, Cutoog, Mn2g.

Melt and cast 514g in a Tammann furnace to obtain alloy (a)
and this 94.7 wt%Ag-5wt%Cu-0
, 15wt%Mn-0,2wL%Si alloy was repeatedly hot-forged, annealed after cutting, and rolled to a thickness of L2 IIIm. This alloy plate was heat-treated at 750° C. for 30 minutes, and a portion thereof was cut out to measure the crystal grain size.

Next, this heat-treated material is subjected to 1. The hardness was measured by rolling to Orm. The above measurement results are shown in the table. It should be noted that in this example, no comparison of timbre was made.

Second example Agl, 850g5 Cu13Bg, Ti10g.

512g was melted in a Tammann furnace and cast to form alloy (b).
and this 92.5wt%Ag 6.9wt%Cu-
A 0.5 wt% Ti -0.1 wt% Si alloy was processed to a thickness of 1.21 nI in the same process as in the first example.

A part of it was cut out to measure the crystal grain size, and the hardness was measured by rolling it to 1.0 mm.

Next, the outer diameter is 2Jan, the inner diameter is 21.6mm, and the wall thickness is 1.2mm.
After processing it into a welded pipe, it was repeatedly annealed and expanded to a wall thickness of 0.5 mm, an outer diameter of 20.5 mm, and an inner diameter of 19 mm.
A 5+um pipe was obtained.

This pipe was heat treated at 750'C in N2 gas for 30 minutes.

After skin bathing the pipe, it was stabilized in N2 gas at 300°C for 2 hours. This material was processed into a flute using a predetermined process, and the tone color was compared with a flute made using conventional materials.

Furthermore, similar to Example 1, instruments (C) were made from instruments (C), of which instruments (e) and (8) were processed into flutes, and the tones were compared in the same manner as in Example 2.

As a conventional example for comparison, similar to the first embodiment (
I created x), (y), and (z), and processed the () and (g) into flutes and compared the tones.

[Effects of the Invention] According to the present invention described in detail above, the growth of crystal grains is suppressed and the hardness is increased compared to the conventional example.

In addition, when compared with the conventional example, the tone color is particularly excellent in the midrange to high range, and the brightness of the sound is confusing.

Therefore, it is an innovative material that exhibits extremely excellent properties as a material for flutes.

Patent applicant: Tokuriki Honten Co., Ltd. Yamaha Corporation

Claims (1)

[Claims] 1. Main component is Ag, Cu is 5-28% by weight, and M
A metal material for a flute, characterized in that one or more elements of n, Ti, Zr, and Si are added in a weight ratio of 0.05 to 1%.