CN115731905A - Durable guitar string - Google Patents

Abstract

The invention relates to a durable guitar string, which belongs to the technical field of guitar accessories. The guitar string provided by the present invention is a composite structure, the core wire of the guitar string is a steel wire, the core wire is wound with a metal wire, and the metal wire is coated with a hydrophobic coating; the metal wire of the guitar string provided by the present invention uses titanium, Nickel and copper raw materials, the nickel element significantly improves the mechanical properties and oxidation resistance of the alloy; the hydrophobic coating provided by the invention has good waterproof and anti-corrosion properties. The guitar string provided by the invention has excellent mechanical properties, has warm and bright tone, and achieves good durability through the improvement of anti-oxidation and hydrophobic properties.

Description

A Durable Guitar String

technical field

The invention belongs to the technical field of guitar accessories, and in particular relates to a durable guitar string.

Background technique

Guitar is a stringed instrument with a long history, and its origin is much earlier than violin and piano. The development process of guitar string materials is roughly from steel strings to nylon, which is widely used today. Orville Gibson, the founder of Gibson guitars, discovered steel strings, making rock and roll possible. Steel strings are durable, loud, and suitable for modern stage performances. However, the "longitudinal vibration" of the steel strings generates metallic noise, resulting in too long reverberations, which are easy to release and difficult to absorb. Sometimes the volume is too high and the charm is not enough, which greatly reduces the simple and simple taste.

After the official birth of nylon strings, there is a new era of classical guitar with the arrival of nylon strings. Nylon strings have the advantages of both gut strings and steel strings. They have the volume and stability of steel strings and the beautiful timbre of gut strings. Nylon, a synthetic fiber, not only has high strength and toughness, but also is much more resistant to corrosion and external and environmental factors than natural gut and silk strings. In addition, nylon is easy to get and cheap, so that more people can enjoy the wonderful timbre of stringed instruments. However, nylon strings are generally used for classical guitars, and the sound is relatively soft and low, while contemporary folk guitars mainly require bright and tense timbres.

Brass strings have good timbre, but the appearance of brass strings is yellowish. It is a metal wire composed of copper-tin ratio of 80/20 or 85/15, which is formed by winding high-carbon steel strings. The timbre is bright and penetrating. powerful. 90% of new guitars use this string, and most of them are 0.012 or 0.011 in thickness. However, brass strings are prone to oxidation and corrosion during use, thereby reducing their service life.

Contents of the invention

The guitar string provided by the present invention is a composite structure, the core wire of the guitar string is a steel wire, the core wire is wound with a metal wire, and the metal wire is coated with a hydrophobic coating; the metal wire of the guitar string provided by the present invention uses titanium, Nickel and copper, the nickel element significantly improves the mechanical properties and oxidation resistance of the alloy; the hydrophobic coating provided by the invention has good waterproof and anti-corrosion properties. The guitar string provided by the invention has excellent mechanical properties, has warm and bright tone, and achieves good durability through the improvement of anti-oxidation and hydrophobic properties.

The purpose of the present invention can be achieved through the following technical solutions:

A durable guitar string, the guitar string has a composite structure, the core wire of the guitar string is a steel wire, the core wire is wound with a metal wire, and the metal wire is coated with a hydrophobic coating;

The static water contact angle of the hydrophobic coating is 140-155°;

The metal wire comprises the following raw materials in mass percentage:

Titanium 25-30%;

Nickel 5-10%;

Copper balance;

The preparation method of the hydrophobic coating comprises the following operations:

(1) Mix methanol, methyltriethoxysilane and catalyst evenly to make a sol;

(2) The metal wire is immersed in the sol at a constant rate of 4-8mm/min, taken out, dried, and sintered for 3 hours;

The sintering temperature is 200-300°C.

The preparation method of the metal wire comprises the following operations:

Step 1: after smelting the titanium, copper and nickel, an alloy ingot is obtained;

Step 2: making an alloy rod after melting the alloy ingot;

Step 3: The alloy rod is subjected to aging treatment and then wire-drawn to obtain a metal wire.

As a preferred solution of the present invention, the melting temperature is 950-1050° C., the duration is 3-5 hours, and the alloy ingot needs to be obtained after repeated melting 2-4 times.

As a preferred solution of the present invention, the wire drawing is carried out on a high-speed wire drawing machine, the speed of the wire drawing machine is 10-13m/s, and the temperature of the wire drawing is 45-55°C.

The nickel element in the alloy is easy to form a dense oxide film, which prevents it from continuing to oxidize and reduces wear; and nickel-containing strings have a warm, classic tone.

As a preferred solution of the present invention, the aging treatment time is 2-3 days, and the aging treatment temperature is 420-450°C.

As a preferred solution of the present invention, the catalyst is ammonia monohydrate.

As a preferred solution of the present invention, the molar ratio of methyltriethoxysilane, methanol and catalyst is 1:19-20:4-5.

As a preferred solution of the present invention, the heating rate during sintering is 2-3° C./min.

The maximum water contact angle of the obtained coating is 155°, and it can still maintain superhydrophobicity after soaking in 50% HCl solution for 100 h. The mechanical stability of the coating was tested by the method of bending experiment. The contact angle obtained by bending the substrate over 90° is still almost the same as that of the plane, which has excellent mechanical stability.

Beneficial effects of the present invention:

1. The guitar string provided by the present invention has a composite structure, the core wire of the guitar string is a steel wire, the core wire is wound with a metal wire, and the outside of the metal wire is coated with a hydrophobic coating, which enhances the durability of the guitar string and has a warm and bright tone.

2. The metal wire of the guitar string provided by the present invention adds 25-30% titanium, 5-10% nickel, and the nickel element significantly improves the hardness of the alloy and the ability to resist external loads, and the elastic deformation ability is good; and The titanium oxide passivation film formed on the surface of the alloy titanium improves the oxidation resistance of the alloy.

3. The coating provided by the present invention has good waterproof and anti-corrosion properties, the static water contact angle of the coating is as high as 155 °, and the water sliding angle is as low as 7 °. Hydrophobicity was maintained; the coating was stable against humidity and exhibited hydrophobicity even after 90 days of exposure; the coating was mechanically stable, and water droplets remained spherical on coatings bent over 90°.

4. In the preparation method of the hydrophobic coating in the present invention, the method of impregnation + sintering is adopted. The sintering makes the densification process of reducing the internal pore size of the gel under the effect of surface energy. During the sintering process, in addition to making the gel Densification is attached to the outside of the wire, and the sintering process promotes the formation of an oxide film on the surface of the wire. Nickel forms a transparent passivation film on the surface at 200-300 ° C; titanium forms oxide films of different structures above 200 ° C, which promotes the formation of the oxide film on the surface of the wire. The invention provides for the production of oxide films on wires.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Example 1

A durable guitar string, the core wire of the guitar string is a steel wire, the core wire is wound with a metal wire, and the metal wire is coated with a composite coating.

Metal wires include the following raw materials in mass percentages:

Titanium 24%;

Nickel 5%;

Copper balance.

The preparation method of metal wire comprises the following operations:

Take high-purity 99.99wt% titanium, 99.99wt% copper, and 99.99wt% nickel as raw materials, weigh the metals in proportion, and use alcohol ultrasonic cleaning to remove surface impurities; dry them and place them in an electric arc furnace. High-temperature smelting in the atmosphere, the temperature is 950 ° C, the duration is 3 hours, and the alloy ingot is obtained after repeated smelting twice; The alloy rod is 8mm; the alloy rod is subjected to aging treatment in a 420°C aging furnace for 2 days, and then drawn on a high-speed wire drawing machine, the speed of the wire drawing machine is 10m/s, and the temperature of the drawing oil is controlled at 45°C to obtain metal silk.

Hydrophobic coating preparation method comprises the following operations:

Mix methanol and catalyst ammonia monohydrate evenly, add methyltriethoxysilane dropwise while stirring, and make a sol after the dropwise addition is completed, and dip the metal wire in the sol at a constant speed, and the constant speed of dipping is 6mm/min, The molar ratio of methyltriethoxysilane, methanol and catalyst ammonia monohydrate was 1:19.1:4.31, and then dried in air at a constant rate of 6 mm/min for 30 min, and then heated to 250 °C for 3 h at 2 °C/min to ensure Densification of the sol.

Example 2

A durable guitar string, the core wire of the guitar string is a steel wire, the core wire is wound with a metal wire, and the metal wire is coated with a composite coating.

Metal wires include the following raw materials in mass percentages:

Titanium 27%;

Nickel 8%;

Copper balance.

The preparation method of metal wire comprises the following operations:

Take high-purity 99.99wt% titanium, 99.99wt% copper, and 99.99wt% nickel as raw materials, weigh the metals in proportion, and use alcohol ultrasonic cleaning to remove surface impurities; dry them and place them in an electric arc furnace. High-temperature smelting in the atmosphere, the temperature is 1000°C, and the duration is 4 hours. The alloy ingot needs to be smelted three times repeatedly to obtain the alloy ingot; the alloy ingot is ground to remove scale and crushed into particles, which are put into a vacuum quartz tube to heat and melt to prepare the An alloy rod with a diameter of 8mm; the alloy rod is aged in a 435°C aging furnace for 2.5 days, and then drawn on a high-speed wire drawing machine with a speed of 12m/s and a temperature of the drawing oil controlled at 50°C to obtain Metal wire.

Hydrophobic coating preparation method comprises the following operations:

Mix methanol and catalyst ammonia monohydrate evenly, add methyltriethoxysilane dropwise while stirring, and make a sol after the dropwise addition is completed, and dip the metal wire in the sol at a constant speed, and the constant speed of dipping is 6mm/min, The molar ratio of methyltriethoxysilane, methanol and catalyst ammonia monohydrate was 1:19.1:4.31, and then dried in air at a constant rate of 6 mm/min for 45 min, and then heated at 2 °C/min to 250 °C for 3 h to ensure Densification of the sol.

Example 3

A durable guitar string, the core wire of the guitar string is a steel wire, the core wire is wound with a metal wire, and the metal wire is coated with a composite coating.

Metal wires include the following raw materials in mass percentages:

Titanium 30%;

Nickel 10%;

Copper balance.

The preparation method of metal wire comprises the following operations:

Take high-purity 99.99wt% titanium, 99.99wt% copper, and 99.99wt% nickel as raw materials, weigh the metals in proportion, and use alcohol ultrasonic cleaning to remove surface impurities; dry them and place them in an electric arc furnace. High-temperature smelting in the atmosphere, the temperature is 1050°C, and the duration is 5 hours. After repeated smelting 4 times, the alloy ingot is obtained; the alloy ingot is ground to remove scale and crushed into granules, which are heated and melted in a vacuum quartz tube to prepare the An alloy rod with a diameter of 8mm; the alloy rod is subjected to aging treatment in an aging furnace at 450°C for 3 days, and then drawn on a high-speed profile wire drawing machine, the speed of the wire drawing machine is 13m/s, and the temperature of the drawing oil is controlled at 50°C to obtain Metal wire.

Hydrophobic coating preparation method comprises the following operations:

Mix methanol and catalyst ammonia monohydrate evenly, add methyltriethoxysilane dropwise while stirring, and make a sol after the dropwise addition is completed, and dip the metal wire in the sol at a constant speed, and the constant speed of dipping is 6mm/min, The molar ratio of methyltriethoxysilane, methanol and catalyst ammonia monohydrate was 1:19.1:4.31, and then dried in air at a constant rate of 6 mm/min for 60 min, and then heated to 250 °C for 3 h at 2 °C/min to ensure Densification of the sol.

Carry out following test to embodiment 1-3:

Coating flexibility test: GB/T1731.1993 "Determination of paint film flexibility", the results are shown in Table 1;

Coating impact resistance test: GB/T1732.1993 "Determination of impact resistance of paint film", the results are shown in Table 1;

Hydrophobicity test:

The water contact angle of the sample was tested with a contact angle tester to evaluate the hydrophobic performance of the guitar string. The results are shown in Table 1.

Table 1

sample Flexibility (radius of curvature) impact resistance water contact angle Example 1 0.5mm ＞50cm·kg 142.7° Example 2 0.4mm ＞50cm·kg 148.6° Example 3 0.4mm ＞50cm·kg 153.1°

It can be seen from Table 1 that the durable guitar strings provided by Examples 1-3 of the present invention have good mechanical properties and water resistance.

In the description of the specification, descriptions referring to the terms "one embodiment", "example", "specific example" and the like mean that specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one of the present invention. Examples or examples. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above content is only an example and description of the present invention. Those skilled in the art will make various modifications or supplements to the described specific embodiments or replace them in similar ways, as long as they do not deviate from the invention or exceed the rights of the present invention. The scope defined in the claims should all belong to the protection scope of the present invention.

Claims (8)

1. A durable guitar string, characterized in that, the guitar string has a core wire that is a steel wire, the core wire is wound with a metal wire, and the metal wire is coated with a hydrophobic coating; The static water contact angle of the hydrophobic coating is 140-155°; The metal wire comprises the following raw materials in mass percentage: Titanium 25-30%; Nickel 5-10%; Copper balance; The preparation method of the hydrophobic coating comprises the following operations: (1) Mix methanol, methyltriethoxysilane and catalyst evenly to make a sol; (2) The metal wire is immersed in the sol at a constant rate, dried and sintered after being taken out; The sintering temperature is 200-300°C. 2. a kind of durable guitar string according to claim 1, is characterized in that, the preparation method of described wire comprises the following operations: Step 1: After smelting the titanium, copper and nickel, an alloy ingot is obtained; Step 2: making an alloy rod after melting the alloy ingot; Step 3: The alloy rod is subjected to aging treatment and then wire-drawn to obtain a metal wire. 3. A durable guitar string according to claim 2, characterized in that the melting temperature is 950-1050°C, the duration is 3-5 hours, and the alloy ingot needs to be obtained after repeated melting 2-4 times. 4. A durable guitar string according to claim 2, characterized in that, the drawing speed is 10-13m/s, and the drawing temperature is 45-55°C. 5. A durable guitar string according to claim 2, characterized in that, the aging treatment time is 2-3 days, and the aging treatment temperature is 420-450°C. 6. A durable guitar string according to claim 1, wherein the catalyst is ammonia monohydrate. 7. A durable guitar string according to claim 1, characterized in that the molar ratio of the methyltriethoxysilane, methanol and catalyst is 1:19-20:4-5. 8. A durable guitar string according to claim 1, characterized in that the heating rate during the sintering is 2-3°C/min.