阅读说明：本技术 一种增强型金属集束长纤维的高效制备方法 (Efficient preparation method of reinforced metal cluster long fiber ) 是由 陆志宏 白洁 卞伟星 于 2021-06-15 设计创作，主要内容包括：本发明公开了一种增强型金属集束长纤维的高效制备方法,S1、坯料处理：选取金属棒坯,并将棒坯加热至600℃～700℃后保温50～120分钟,然后将保温后的棒坯轧制成棒材,并通过机械加工去的方式去除棒材的表面氧化皮,轧制的总加工率为80%～90%；S2、表面处理：对棒坯的表面进行电镀覆铜生成隔离层,隔离层厚度为2μm～5μm；S3、丝材拉拔：将包覆好的棒坯放入孔模中反复拉伸,得到丝材,本发明通过先将金属棒坯拉拔成丝材后进行退火酸洗,在将丝材制备成丝束后再次进行拉拔、退火、酸洗工序,使得制备后的丝束内的每根纤维都经过退火、酸洗工序,使得金属集束具有良好的抗拉伸性和能够提高金属集束的韧性。(The invention discloses a high-efficiency preparation method of reinforced metal bundling long fiber, comprising the following steps of S1: selecting a metal bar blank, heating the bar blank to 600-700 ℃, preserving heat for 50-120 minutes, rolling the bar blank after heat preservation into a bar, and removing oxide skin on the surface of the bar by a mechanical processing mode, wherein the total processing rate of rolling is 80-90%; s2, surface treatment: electroplating copper on the surface of the bar blank to generate an isolating layer, wherein the thickness of the isolating layer is 2-5 microns; s3, drawing the wire: the metal bar blank is firstly drawn into a wire material, then annealing and pickling are carried out, the wire material is prepared into a wire rod, and then the drawing, annealing and pickling processes are carried out again, so that each fiber in the prepared wire bundle is subjected to the annealing and pickling processes, the metal bundle has good tensile resistance and the toughness of the metal bundle can be improved.)

1. An efficient preparation method of reinforced metal bundling long fiber is characterized in that: the method comprises the following steps:

s1, blank processing: selecting a metal bar blank, heating the bar blank to 600-700 ℃, preserving heat for 50-120 minutes, rolling the bar blank after heat preservation into a bar, and removing oxide skin on the surface of the bar by a mechanical processing mode, wherein the total processing rate of rolling is 80-90%;

s2, surface treatment: electroplating copper on the surface of the bar blank to generate an isolating layer, wherein the thickness of the isolating layer is 2-5 microns;

s3, drawing the wire: putting the coated bar blank into a hole die for repeated stretching to obtain a wire material;

s4, wire annealing and pickling solution: putting the stretched metal wire into an electric furnace for annealing treatment, preserving the heat in the furnace for 10-60 min, heating the electric furnace at 500-750 ℃, putting the annealed wire into a pickling solution for primary pickling for 14-26 min;

s5, annealing and acid washing of tows: integrating the pickled metal wires into a bundle, putting the bundle into a steel pipe to form a metal composite, putting the metal composite into a hole die to be repeatedly stretched until the diameter of the metal composite reaches 20 mu m, carrying out vacuum annealing treatment on the metal composite after being pulled, putting the metal wires after being subjected to the vacuum annealing treatment into a pickling solution to carry out final pickling to obtain a metal long fiber bundle;

s6, cleaning and drying: and cleaning and drying the pickled long metal fiber bundle.

2. The method of claim 1, wherein the method comprises the steps of: the pickling solution comprises the following components: 7-9 parts of hydrochloric acid, 1-4 parts of nitrilotriacetic acid, 0.2-0.5 part of diethylenetriamine, 0.5-1.5 parts of sodium nitrite, 2-4 parts of detergent and the balance of water.

3. The method of claim 2, wherein the method comprises the steps of: the pickling solution comprises the following components: 7 parts of hydrochloric acid, 1 part of nitrilotriacetic acid, 0.2 part of diethylenetriamine, 0.5 part of sodium nitrite, 2 parts of detergent and the balance of water.

4. The method of claim 2, wherein the method comprises the steps of: the pickling solution comprises the following components: 9 parts of hydrochloric acid, 4 parts of nitrilotriacetic acid, 0.5 part of diethylenetriamine, 1.5 parts of sodium nitrite, 4 parts of detergent and the balance of water.

5. The method of claim 2, wherein the method comprises the steps of: the preparation steps of the pickling solution comprise:

firstly, adding water into a reaction kettle, then adding sodium nitrite, and stirring and adding until the sodium nitrite is completely dissolved;

then adding hydrochloric acid, nitrilotriacetic acid and diethylenetriamine, and stirring to dissolve completely;

finally, washing is added, and the mixture is stirred for 30 minutes to obtain the pickling solution.

6. The method of claim 1, wherein the method comprises the steps of: in step S2, when copper is plated on the surface of the bar blank, the bar blank is placed in an electroplating solution with a pH value of 7.5-8.1 at a temperature of 18-30 ℃ and a current density of 1-1.5A/dm³And the electroplating time is 25-32 minutes.

7. The method of claim 1, wherein the method comprises the steps of: in step S5, annealing and pickling the tow, the degree of vacuum of the vacuum annealing treatment was 8.0X 10^-2Pa below, 600-680 ℃, 60-up to 60 DEG for heat preservationFor 90 minutes.

8. The method of claim 1, wherein the method comprises the steps of: in the step S4, the temperature of the pickling solution is 70 to 75 ℃ when the wire material is pickled, and in the step S5, the temperature of the pickling solution is 65 to 75 ℃ when the wire material is pickled.

9. The method of claim 1, wherein the method comprises the steps of: when the pickling solution is prepared for use, water needs to be added for dilution, wherein the preparation ratio of the pickling solution to the water is 1: 30.

10. the method of claim 1, wherein the method comprises the steps of: in S3 and wire drawing, the pass deformation is controlled to be 12-21% and the total deformation is controlled to be 75-85% in the drawing process.

Technical Field

The invention relates to the technical field of metal fiber processing, in particular to an efficient preparation method of an enhanced metal bundling long fiber.

Background

The metal fiber has good electric conduction, heat conduction, magnetic conduction and high temperature resistance due to the characteristics of the metal fiber, and is low in cost and widely applied to the industries of electronics, chemical engineering, machinery, textile and food boarding. The conventional method for manufacturing the metal fiber is a drawing method, when the metal fiber is manufactured by the drawing method, metal blanks need to be drawn, annealed and pickled, when the existing metal fiber is manufactured by the drawing method, the drawn metal wires are directly bundled into a group and then annealed and pickled, so that each group of metal wires in the metal wire bundle cannot be treated by an annealing and pickling process, the overall performance is influenced, and the damage of pickling solution broken metal fibers on the market is large.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides an efficient preparation method of an enhanced metal bundling long fiber.

In order to achieve the purpose, the invention provides the following technical scheme: an efficient preparation method of reinforced metal bundling long fiber comprises the following steps:

s1, blank processing: selecting a metal bar blank, heating the bar blank to 600-700 ℃, preserving heat for 50-120 minutes, rolling the bar blank after heat preservation into a bar, and removing oxide skin on the surface of the bar by a mechanical processing mode, wherein the total processing rate of rolling is 80-90%;

s2, surface treatment: electroplating copper on the surface of the bar blank to generate an isolating layer, wherein the thickness of the isolating layer is 2-5 microns;

s3, drawing the wire: putting the coated bar blank into a hole die for repeated stretching to obtain a wire material;

s4, wire annealing and pickling solution: putting the stretched metal wire into an electric furnace for annealing treatment, preserving the heat in the furnace for 10-60 min, heating the electric furnace at 500-750 ℃, putting the annealed wire into a pickling solution for primary pickling for 14-26 min;

s5, annealing and acid washing of tows: integrating the pickled metal wires into a bundle, putting the bundle into a steel pipe to form a metal composite, putting the metal composite into a hole die to be repeatedly stretched until the diameter of the metal composite reaches 20 mu m, carrying out vacuum annealing treatment on the metal composite after being pulled, putting the metal wires after being subjected to the vacuum annealing treatment into a pickling solution to carry out final pickling to obtain a metal long fiber bundle;

s6, cleaning and drying: and cleaning and drying the pickled long metal fiber bundle.

As further preferable in the present technical solution: the pickling solution comprises the following components: 7-9 parts of hydrochloric acid, 1-4 parts of nitrilotriacetic acid, 0.2-0.5 part of diethylenetriamine, 0.5-1.5 parts of sodium nitrite, 2-4 parts of detergent and the balance of water.

As further preferable in the present technical solution: the pickling solution comprises the following components: 7 parts of hydrochloric acid, 1 part of nitrilotriacetic acid, 0.2 part of diethylenetriamine, 0.5 part of sodium nitrite, 2 parts of detergent and the balance of water.

As further preferable in the present technical solution: the pickling solution comprises the following components: 9 parts of hydrochloric acid, 4 parts of nitrilotriacetic acid, 0.5 part of diethylenetriamine, 1.5 parts of sodium nitrite, 4 parts of detergent and the balance of water.

As further preferable in the present technical solution: the preparation steps of the pickling solution comprise:

(1) firstly, adding water into a reaction kettle, then adding sodium nitrite, and stirring and adding until the sodium nitrite is completely dissolved;

(2) then adding hydrochloric acid, nitrilotriacetic acid and diethylenetriamine, and stirring to dissolve completely;

(3) finally, washing is added, and the mixture is stirred for 30 minutes to obtain the pickling solution.

Preferably, in the step S2, when copper is plated on the surface of the bar blank in the surface treatment, the bar blank is placed in an electroplating solution with a pH value of 7.5-8.1, the temperature is 18-30 ℃, the current density is 1-1.5A/dm 3, and the electroplating time is 25-32 minutes.

As further preferable in the present technical solution: in the step S5, annealing and pickling the tows, the vacuum degree of the vacuum annealing treatment is below 8.0 multiplied by 10 < -2 > Pa, the temperature is 600-680 ℃, and the heat preservation time is 60-90 minutes.

As further preferable in the present technical solution: in the step S4, the temperature of the pickling solution is 70 to 75 ℃ when the wire material is pickled, and in the step S5, the temperature of the pickling solution is 65 to 75 ℃ when the wire material is pickled.

As further preferable in the present technical solution: when the pickling solution is prepared for use, water needs to be added for dilution, wherein the preparation ratio of the pickling solution to the water is 1: 30.

as further preferable in the present technical solution: in S3 and wire drawing, the pass deformation is controlled to be 12-21% and the total deformation is controlled to be 75-85% in the drawing process.

The invention has the technical effects and advantages that:

1. according to the invention, the metal bar blank is firstly drawn into the wire material and then is subjected to annealing and pickling, and the wire material is prepared into the wire material and then is subjected to the drawing, annealing and pickling processes again, so that each fiber in the prepared wire bundle is subjected to the annealing and pickling processes, and the metal bundle has good tensile resistance and can be improved in toughness.

2. According to the pickling solution, hydrochloric acid, nitrilotriacetic acid, diethylenetriamine, sodium nitrite and washing detergent are mixed with water to form the pickling solution, the pickling solution is environment-friendly and efficient, is low in acid pollution, can be used after being diluted by adding water during use, is low in concentration, and is small in size error of a product after pickling, so that damage to the product is effectively reduced.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

An efficient preparation method of reinforced metal bundling long fiber comprises the following steps:

s1, blank processing: selecting a metal bar blank, heating the bar blank to 600-700 ℃, preserving heat for 50-120 minutes, rolling the bar blank after heat preservation into a bar, and removing oxide skin on the surface of the bar by a mechanical processing mode, wherein the total processing rate of rolling is 80-90%;

s2, surface treatment: putting the bar blank into an electroplating solution with the pH value of 7.5-8.1, electroplating for 25-32 minutes at the temperature of 18-30 ℃, at the current density of 1-1.5A/dm 3, and electroplating copper on the surface of the bar blank to generate an isolation layer, wherein the thickness of the isolation layer is 2-5 microns;

s3, drawing the wire: putting the coated bar blank into a hole die for repeated stretching to obtain a wire material, wherein the pass deformation is controlled to be 12-21% and the total deformation is 75-85% in the drawing process;

s4, preparing an acid washing solution: selecting 7 parts of hydrochloric acid, 1 part of nitrilotriacetic acid, 0.2 part of diethylenetriamine, 0.5 part of sodium nitrite, 2 parts of detergent and the balance of water, firstly preparing water into a reaction kettle, then adding the sodium nitrite, stirring and adding until the sodium nitrite is completely dissolved, then adding the hydrochloric acid, the nitrilotriacetic acid and the diethylenetriamine, stirring and dissolving, finally adding the detergent, stirring for 30 minutes to obtain a pickling solution, and when the pickling solution is prepared and used, adding water for dilution, wherein the preparation proportion of the pickling solution and the water is 1: 30.

s5, wire annealing and pickling solution: putting the stretched metal wire into an electric furnace for annealing treatment, and preserving heat in the furnace for 10-60 min, wherein the heating temperature of the electric furnace is 500-750 ℃, putting the annealed wire into a pickling solution for primary pickling for 14-26 min, and the temperature of the pickling solution is 70-75 ℃;

s6, annealing and acid washing of tows: integrating the pickled metal wires into a bundle, putting the bundle into a steel pipe to form a metal composite, putting the metal composite into a hole die for repeated stretching until the diameter of the metal composite reaches 20 mu m, carrying out vacuum annealing treatment on the drawn metal composite, wherein the vacuum degree of the vacuum annealing treatment is below 8.0 multiplied by 10 < -2 > Pa, the temperature is 600-680 ℃, the heat preservation time is 60-90 minutes, putting the metal wires subjected to the vacuum annealing treatment into a pickling solution for final pickling, and the temperature of the pickling solution is 65-75 ℃ to obtain a metal long fiber bundle;

s6, cleaning and drying: and cleaning and drying the pickled long metal fiber bundle.

Example 2

An efficient preparation method of reinforced metal bundling long fiber comprises the following steps:

s1, blank processing: selecting a metal bar blank, heating the bar blank to 600-700 ℃, preserving heat for 50-120 minutes, rolling the bar blank after heat preservation into a bar, and removing oxide skin on the surface of the bar by a mechanical processing mode, wherein the total processing rate of rolling is 80-90%;

s2, surface treatment: putting the bar blank into an electroplating solution with the pH value of 7.5-8.1, electroplating for 25-32 minutes at the temperature of 18-30 ℃, at the current density of 1-1.5A/dm 3, and electroplating copper on the surface of the bar blank to generate an isolation layer, wherein the thickness of the isolation layer is 2-5 microns;

s3, drawing the wire: putting the coated bar blank into a hole die for repeated stretching to obtain a wire material, wherein the pass deformation is controlled to be 12-21% and the total deformation is 75-85% in the drawing process;

s4, preparing an acid washing solution: selecting 8 parts of hydrochloric acid, 3 parts of nitrilotriacetic acid, 0.4 part of diethylenetriamine, 1 part of sodium nitrite, 3 parts of detergent and the balance of water, firstly adding water into a reaction kettle, then adding the sodium nitrite, stirring and adding until the sodium nitrite is completely dissolved, then adding the hydrochloric acid, the nitrilotriacetic acid and the diethylenetriamine, stirring and dissolving, finally adding the detergent, stirring for 30 minutes to obtain a pickling solution, and when the pickling solution is prepared and used, adding water for dilution, wherein the preparation proportion of the pickling solution and the water is 1: 30.

s5, wire annealing and pickling solution: putting the stretched metal wire into an electric furnace for annealing treatment, and preserving heat in the furnace for 10-60 min, wherein the heating temperature of the electric furnace is 500-750 ℃, putting the annealed wire into a pickling solution for primary pickling for 14-26 min, and the temperature of the pickling solution is 70-75 ℃;

s6, annealing and acid washing of tows: integrating the pickled metal wires into a bundle, putting the bundle into a steel pipe to form a metal composite, putting the metal composite into a hole die for repeated stretching until the diameter of the metal composite reaches 20 mu m, carrying out vacuum annealing treatment on the drawn metal composite, wherein the vacuum degree of the vacuum annealing treatment is below 8.0 multiplied by 10 < -2 > Pa, the temperature is 600-680 ℃, the heat preservation time is 60-90 minutes, putting the metal wires subjected to the vacuum annealing treatment into a pickling solution for final pickling, and the temperature of the pickling solution is 65-75 ℃ to obtain a metal long fiber bundle;

s6, cleaning and drying: and cleaning and drying the pickled long metal fiber bundle.

Example 3

An efficient preparation method of reinforced metal bundling long fiber comprises the following steps:

s1, blank processing: selecting a metal bar blank, heating the bar blank to 600-700 ℃, preserving heat for 50-120 minutes, rolling the bar blank after heat preservation into a bar, and removing oxide skin on the surface of the bar by a mechanical processing mode, wherein the total processing rate of rolling is 80-90%;

s2, surface treatment: putting the bar blank into an electroplating solution with the pH value of 7.5-8.1, electroplating for 25-32 minutes at the temperature of 18-30 ℃, at the current density of 1-1.5A/dm 3, and electroplating copper on the surface of the bar blank to generate an isolation layer, wherein the thickness of the isolation layer is 2-5 microns;

s3, drawing the wire: putting the coated bar blank into a hole die for repeated stretching to obtain a wire material, wherein the pass deformation is controlled to be 12-21% and the total deformation is 75-85% in the drawing process;

s4, preparing an acid washing solution: selecting 9 parts of hydrochloric acid, 4 parts of nitrilotriacetic acid, 0.5 part of diethylenetriamine, 1.5 parts of sodium nitrite, 4 parts of detergent and the balance of water, firstly preparing water into a reaction kettle, then adding the sodium nitrite, stirring and adding until the sodium nitrite is completely dissolved, then adding the hydrochloric acid, the nitrilotriacetic acid and the diethylenetriamine, stirring and dissolving, finally adding the detergent, stirring for 30 minutes to obtain a pickling solution, and when the pickling solution is prepared and used, adding water for dilution, wherein the preparation proportion of the pickling solution and the water is 1: 30.

s5, wire annealing and pickling solution: putting the stretched metal wire into an electric furnace for annealing treatment, and preserving heat in the furnace for 10-60 min, wherein the heating temperature of the electric furnace is 500-750 ℃, putting the annealed wire into a pickling solution for primary pickling for 14-26 min, and the temperature of the pickling solution is 70-75 ℃;

s6, annealing and acid washing of tows: integrating the pickled metal wires into a bundle, putting the bundle into a steel pipe to form a metal composite, putting the metal composite into a hole die for repeated stretching until the diameter of the metal composite reaches 20 mu m, carrying out vacuum annealing treatment on the drawn metal composite, wherein the vacuum degree of the vacuum annealing treatment is below 8.0 multiplied by 10 < -2 > Pa, the temperature is 600-680 ℃, the heat preservation time is 60-90 minutes, putting the metal wires subjected to the vacuum annealing treatment into a pickling solution for final pickling, and the temperature of the pickling solution is 65-75 ℃ to obtain a metal long fiber bundle;

s6, cleaning and drying: and cleaning and drying the pickled long metal fiber bundle.

The long metal fiber bundles prepared in example 1, example 2 and example 3 were subjected to static mechanical property tests, and the results were as follows:

	example 1	Example 2	Example 3
				Tensile strength (Mpa)	651	639	650
Elongation (%)	17.22	18.4	19.1
				Tensile strain	23.6	19.4	21.6

The metal bundle prepared by the preparation method has good tensile resistance, and the toughness of the metal bundle can be improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.