JP2019015870A - Reed blank material of sho and method of manufacturing the same - Google Patents

Abstract

To provide a component analysis table, and know-how and a temperature management method of production for a reed blank material of Sho (traditional Japanese wind instrument resembling panpipes), components and a manufacturing method of which are not confirmed before.SOLUTION: A reed blank material of Sho 1 has components of at least tin and zinc included in phosphor bronze, and contains 20-24% by mass of the component of tin and 4-6% by mass of the component of zinc, and 0.02-0.06% of phosphor copper is added in refining. The reed blank material is cooled slowly after being held in a state of about 350°C for at least five hours after teeming.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a kite lead material and a kite lead material manufacturing method, for example, a kite lead material used in gagaku and a method for manufacturing the kit lead material.

  FIG. 1 shows a front view of the bowl 1 used for playing Gagaku. This song 1 is a kind of wind instrument that came from China with Gagaku around the Nara period. In the present specification, since the lead material that is the sounding portion of 笙 1 is described, the subject of the invention is referred to as “lead material 4”.

  The cocoon 1 has 17 thin bamboo pipes 2 arranged in a circular shape at the bottom portion called a hoe 3. These bamboo pipes 2 are inserted into a lower part called a root joint 7 and are bundled by a metal band 8. Then, 15 of these bamboo pipes 2 are provided with metal ridges 4 similar to harmonica reeds to serve as sound sources. The performer presses the finger hole 6 formed in the bamboo basket 2 when performing. As with the pipe organ lead pipe, the performer breathes from the outlet 5 provided on the side of the heel 3, and the heel 4 vibrates in the same manner as the front and back, so the same whether you inhale or exhale. Can continue to produce sound. The scale is determined by the natural frequency of 簧 4 and is resonated in the bamboo pipe 2 to be pronounced. The lead 4 of the lead 1 is a strip-shaped metal piece having a thickness of 1.2 mm, a width of 7 mm, and a length of 60 mm, and a prototype is manufactured by a casting method such as lost wax. Then, deburring is performed and final processing is performed. The thickness is adjusted depending on how much the finishing allowance from the material is.

  In addition, the material of the kite 4 has been manufactured by cutting out a percussion instrument made of an alloy made of copper and tin called Hibiki Copper or Ishibori (Isure is also called “Sahari”). This Hibiki is found in temple bells and bells as Dora and is said to resonate well when processed into the lead material 4 of 笙 1 as the old Dora, which has been driven for many years. ing.

  Japanese Patent Application Laid-Open No. 2004-151561 discloses a mallet lead in which the durability of the lead is improved while maintaining the acoustic characteristics. Here, in a mallet lead having a vibration part and a support part, it is described that at least the vibration part is surface-treated with a silicone-based resin.

  Patent Document 2 discloses a wind instrument and a wind instrument lead including a lead that accurately obtains information related to a player's performance and provides a wind instrument suitable for the wind instrument. Here, it is described that the vibration of the lead is extracted by a vibration sensor, separated into a plurality of vibration components, and information related to the performance is acquired from each vibration component.

JP-A-8-202349 JP 2002-278556 A

  As described above, the kite that is the lead material for kites has been manufactured in China and Korea since ancient times by cutting percussion instruments made of alloys of copper, tin and lead, called copper or left-handed. .

  However, the production of soot by Hibiki copper or left-handed (Sahari) has a lot to rely on know-how because the tone changes greatly depending on the content of tin and trace elements, or the processing method and heat treatment process settings. Quality control has been considered difficult.

  The purpose of the present application is to solve this problem, and for the lead material of cocoons that have not been established in the past, the component analysis table, know-how at the time of manufacturing, and temperature management method. Can be provided.

  In order to achieve the above-mentioned object, the lead material of the kite according to the present invention contains at least tin and zinc in phosphor bronze, the tin component is in the range of 20% to 24% by mass, and the zinc component is 4% in mass. It is characterized by being in the range of% to 6%.

  With the above-described configuration, a main component analysis table can be presented as one example for the components of the lead material that have not been established so far. That is, it is possible to present a specific component analysis table for the lead material that has been traditionally passed down as Hibiki Copper or Sagami.

  Moreover, it is preferable that 0.02% to 0.06% of phosphorous copper is added to the lead material of the bran during refining. Thereby, it is possible to present know-how at the time of manufacturing lead materials that has not been established so far.

  Further, it is preferable that the lead material of the cocoon is gradually cooled after being held at about 350 ° C. for at least 5 hours after pouring. Thereby, the temperature management method at the time of manufacture of the lead material which has not been established so far can be presented. That is, if the casting is performed in a short time after pouring, the desired metal structure cannot be obtained because it is rapidly cooled from a high temperature. Therefore, it is necessary to cool slowly after sufficiently maintaining the state of 350 ° C.

  Further, the method for producing the lead material of the cocoon includes a step of making the crucible red, a step of adding phosphor bronze, tin and zinc together with a solvent to the crucible, a step of raising the temperature from 1180 ° C. to 1200 ° C. while stirring, And adding 0.02% to 0.06% of copper. Thereby, the know-how and temperature management method at the time of manufacture of the lead material which were not established until now can be shown for every step.

  As described above, according to the lead material of the soot according to the present invention, the ingredient analysis table, know-how and temperature at the time of manufacture are provided as one example for the lead material of the soot that has not been established in the past. Management methods can be provided.

It is a front view which shows the outline | summary of the bag concerning this invention. It is sectional drawing which shows the detail of the lead | read | reed material of the cage | basket concerning this invention. It is a flowchart which shows the manufacturing method of the lead material of a cocoon.

(Composition of the lead material of the cocoon)
Hereinafter, the lead material 4 of the bag 1 according to the present invention will be described in detail with reference to the drawings. FIG. 2 is a detailed cross-sectional view of the lead material 4 provided on the bag 1 according to the present invention. FIG. 2A is a detailed cross-sectional view, and FIG. 2B is a front view of a portion of the collar 4.

(Mechanism for producing sound from lead material)
The performer of 笙 1 closes the finger hole 6 with a finger and takes in and out from the air outlet 5. When the natural frequency of the lead material 4 and the length of the bamboo tube 2 up to the top 9 are well matched, the air in the bamboo tube 2 and the lead material 4 cause a resonance phenomenon and sound is produced. The finger hole 6 breaks this resonance phenomenon in advance, and the bamboo tube 2 that does not hold the finger hole 6 does not sound. That is, by closing the finger hole 6, a resonance phenomenon is established and a sound comes out. The ridge 4 is a lead material 4 having three sides cut out in a U shape, and a tuning wax 10 is attached to the end of the lead material 4 as a weight.

(Ingredients for reed material of salmon)
Regarding the lead material 4 of the kite 1 according to the present invention, the following components are proposed as one embodiment, although they have not always been publicly disclosed by know-how. That is, it contains at least tin and zinc components, the tin component is in the range of 20% to 24% by mass, and the zinc component is in the range of 4% to 6% by mass. That is, an alloy in which tin and lead are added to copper called Hibiki Copper or left-handed theory has been used as the lead material 4 of the kite 1 since ancient times, but its components have not been established.

  In the present embodiment, three types of phosphor bronze plate materials defined by JIS C5212 are used. Phosphor bronze is a kind of bronze containing copper (Cu) as a main component and tin (Sn), and phosphorus (P) is used for deoxidation of bronze. The component regulations of JIS standard C5212 are 7.0% to 9.0% for tin, 0.2% or less for zinc, and 0.02% or less for lead. Phosphor bronze is suitable for the lead material 4 that vibrates because of its excellent springiness and high strength. Tin and zinc are added to the three types of phosphor bronze sheets.

  As a result, a specific component analysis table can be presented as an example of the component structure of the lead material 4 that has been traditionally passed down as Hibikido or left-handed (Sahari).

(Manufacturing method of reed lead material)
The lead material 4 is manufactured by a lost wax method which is a kind of precision casting method. In this production, for example, the width is 7 mm × length is 60 mm × thickness is 1.2 mm with the burr removed. After that, the final processing is performed, but the thickness is adjusted depending on the finishing allowance for the material. Further, 0.02% to 0.06% of phosphorous copper is added during refining. Moreover, after pouring, it hold | maintains at the state of about 350 degreeC for at least 5 hours, and cools slowly.

(Manufacturing method of reed lead material)
FIG. 3 is a flowchart showing a method for manufacturing the lead material 4 of the ridge 1. Each step is indicated by reference numerals S1 to S4 in the flowchart.

  First, the crucible is heated red, and phosphor bronze, tin and zinc are put into the crucible together with a solvent. Since the solvent is a special flux and removes oxides, it can be alloyed neatly even if it is added simultaneously with other materials. When the temperature rises and the metal melts, stir well to remove the soot. Next, the flux is charged, and once heated to 1180 ° C. to 1200 ° C. while stirring, the flux is dropped to 1130 ° C. to 1150 ° C. Thereafter, stirring and stripping are performed, 0.02% to 0.06% of phosphorous copper is added, and the mixture is allowed to calm for about 10 minutes. At this time, pouring at 1050 ° C. or lower is effective for reducing defects such as pinholes. Conventionally, after heating up to about 1250 ° C. with stirring, 0.1% of phosphorous copper was added. However, if the amount of phosphoric copper added is too large, it is too hard, so the amount added was reduced.

  The configuration, shape, size, components, and manufacturing method of the lead material 4 of the heel 1 described in the above embodiments are merely shown to the extent that the present invention can be understood and implemented. Therefore, the present invention is not limited to the described embodiments, and can be variously modified without departing from the scope of the technical idea shown in the claims.

1 笙, 2 bamboo pipes, 3 匏, 4 簧 or lead material, 5 outlets, 6 finger holes, 7 root joints, 8 bands, 9 屏 above, 10 tuning wax.

Claims (4)

  Phosphor bronze contains at least tin and zinc, the tin component is in the range of 20% to 24% by mass, and the zinc component is in the range of 4% to 6% by mass Lead material.   The lead material for firewood according to claim 1, wherein 0.02% to 0.06% of phosphorous copper is added during refining.   3. The lead material for salmon according to claim 1 or 2, wherein after the pouring, the lead material for salmon is gradually cooled after being held at about 350 ° C. for at least 5 hours. It is a manufacturing method of the lead material of a bag according to any one of claims 1 to 3,
A step of red hot crucible;
Charging phosphor bronze, tin, and zinc with a solvent into a crucible;
Raising the temperature from 1180 ° C. to about 1200 ° C. while stirring;
And a step of adding 0.02% to 0.06% phosphorous copper while controlling the temperature.

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