Micro nickel wire for metal mesh weaving industry and preparation method of micro nickel wire

Abstract

The invention discloses a fine nickel wire for the metal mesh weaving industry and a preparation method of the fine nickel wire. The fine nickel wire is prepared from, by mass, more than or equal to 99.5% of Ni, 0.03-0.04% of C, less than or equal to 0.01% of Cu, 0.05-0.12% of Mn, less than or equal to 0.03% of Si, less than or equal to 0.01% of Ti and the balance impurities. According to the method, the oxygen content of the melt is controlled by controlling the vacuum degree, and the material component selection is combined, so that the metal wire with few non-metal slag inclusion and small granularity is obtained, and the micro-fine wire can be processed to phi 0.03 mm, including but not limited to phi 0.03 mm, and also can be processed to phi 0.03 mm to phi 0.05 mm. The tensile strength sigma b of the prepared fine nickel wire is larger than or equal to 380 MPa, and the elongation delta is larger than or equal to 15%.

Description

Technical Field

[0001] The invention belongs to the field of fine nickel wires used in the metal mesh industry, and in particular relates to a fine nickel wire used in the metal mesh industry and a preparation method thereof. Background Art

[0002] With the development of the metal mesh industry, the demand for ultra-fine nickel wire is increasing, and the requirements for the life of metal mesh nickel wire are also increasing, resulting in the increase of the composition, elongation and strength requirements of special nickel wire; the traditional process can only process nickel wire up to φ0.08mm, and the processing of micro-fine wire is easy to break, which cannot meet the requirements of the mesh industry. In addition, the original domestic nickel wire formula has low strength and low elongation, and cannot meet the ductility and flexibility of nickel wire required by the mesh industry.

[0003] The drawing requirements of micro-wires determine that ordinary smelting technology cannot meet the requirements of micro-wires. It is necessary to improve the smelting purity, especially the non-metallic inclusions must be greatly reduced, and the mechanical properties of micro-nickel wires must be improved through micro-alloying.

[0004] The fine nickel wire with a diameter of 0.03mm used in the metal mesh industry has excellent application prospects. At present, the market cannot be developed stably.

[0005] For fine nickel wire, stable chemical composition and smelting purity are required. How to improve the purity of the melt during the smelting process is the basic guarantee for drawing fine wires; how to obtain the proportion and range of chemical composition in nickel wire is the core technology to ensure that the fine wire has high tensile strength and high elongation. Summary of the invention

[0006] The purpose of the present invention is to provide a micro-filament material for use in the metal mesh industry, which solves the problems of micro-filament processing difficulties and low tensile strength and elongation in the prior art.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is a fine nickel wire for the metal mesh industry, which is composed of the following components in mass percentage: Ni≥99.5%, C 0.03-0.04%, Cu ≤0.01%, Mn 0.05-0.12%, Si ≤0.03%, Ti ≤0.01%, and the remainder is impurities.

[0008] Preferably, the content of each element in the impurities is less than 0.02%.

[0009] Preferably, the method for preparing the fine nickel wire for the metal mesh industry comprises the following steps: ① First, place the high-purity electrolytic nickel plate in a vacuum melting furnace. The vacuum degree is guaranteed to be ≤1x10 -2Pa high vacuum environment; the temperature of the vacuum melting furnace is controlled at 1500-1600℃, when the temperature reaches the melting temperature, the C element is added first, and then the other elements are added at one time; ② After the addition is completed, the melt is subjected to ultrasonic + mechanical stirring treatment and left to stand for 5-30 minutes to ensure uniform distribution of trace alloy elements; ③ Casting to obtain nickel ingot; ④Finally, the nickel ingot is subjected to forging, extrusion, hot rolling and other processes to obtain nickel wire, and then the fine nickel wire that meets the mesh weaving requirements is obtained through drawing, heat treatment and other processes.

[0010] The tensile strength σb of the prepared fine nickel wire is ≥380MPa, and the elongation δ is ≥15%.

[0011] The beneficial effects of the present invention are as follows: the present invention controls the oxygen content of the melt by controlling the vacuum degree, and combined with the material composition selection of the present invention, obtains a metal wire with less non-metallic slag inclusions and small particle size, and the fine wire can be processed to φ0.03mm, including but not limited to φ0.03mm, and can also be processed from φ0.03mm to φ0.05mm. The tensile strength σb of the prepared fine nickel wire is ≥380MPa and the elongation δ is ≥15%. DETAILED DESCRIPTION

[0012] To make the present invention clearer and more specific, the technical solution of the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0013] Example 1 A fine nickel wire for the metal mesh industry, comprising the following components in percentage by mass: Ni: ≥99.5%, C: 0.03%, Cu: ≤0.01%, Mn: 0.05%, Si: ≤0.03%, Ti: ≤0.01%, the remainder is impurities. The content of each element in the impurities is less than 0.02%.

[0014] The method for preparing the fine nickel wire for the metal mesh industry comprises the following steps: ① First, place the high-purity electrolytic nickel plate in a vacuum melting furnace. The vacuum degree is guaranteed to be ≤1x10 -2 Pa high vacuum environment; the temperature of the vacuum melting furnace is controlled at 1500-1600℃, when the temperature reaches the melting temperature, the C element is added first, and then the other elements are added at one time; ② After the addition is completed, the melt is subjected to ultrasonic + mechanical stirring treatment and left to stand for 20 minutes to ensure uniform distribution of trace alloy elements; ③ Casting to obtain nickel ingot; ④Finally, the nickel ingot is forged, extruded, hot rolled and other processes to obtain nickel wire, and then drawn, heat treated and other processes to obtain fine nickel wire with a diameter of φ0.03mm. The prepared fine nickel wire has a tensile strength of 390MPa and an elongation of 25%, which meets the needs of weaving mesh.

[0015] Example 2 A fine nickel wire for the metal mesh industry, comprising the following components in percentage by mass: Ni: ≥99.5%, C: 0.035%, Cu: ≤0.01%, Mn: 0.12%, Si: ≤0.03%, Ti: ≤0.01%, the remainder is impurities. The content of each element in the impurities is less than 0.02%.

[0016] The method for preparing the fine nickel wire for the metal mesh industry comprises the following steps: ① First, place the high-purity electrolytic nickel plate in a vacuum melting furnace. The vacuum degree is guaranteed to be ≤1x10 -2 Pa high vacuum environment; the temperature of the vacuum melting furnace is controlled at 1500-1600℃, when the temperature reaches the melting temperature, the C element is added first, and then the other elements are added at one time; ② After the addition is completed, the melt is subjected to ultrasonic + mechanical stirring treatment and left to stand for 5 minutes to ensure uniform distribution of trace alloy elements; ③ Casting to obtain nickel ingot; ④Finally, the nickel ingot is forged, extruded, hot rolled and other processes to obtain nickel wire, and then drawn, heat treated and other processes to obtain fine nickel wire with a diameter of φ0.03 mm. The prepared fine nickel wire has a tensile strength of 440 MPa and an elongation of 18%, which meets the needs of weaving mesh.

[0017] Example 3 A fine nickel wire for the metal mesh industry, comprising the following components in percentage by mass: Ni: ≥99.5%, C: 0.04%, Cu: ≤0.01%, Mn: 0.08%, Si: ≤0.03%, Ti: ≤0.01%, the remainder is impurities. The content of each element in the impurities is less than 0.02%.

[0018] The method for preparing the fine nickel wire for the metal mesh industry comprises the following steps: ① First, place the high-purity electrolytic nickel plate in a vacuum melting furnace. The vacuum degree is guaranteed to be ≤1x10 -2 Pa high vacuum environment; the temperature of the vacuum melting furnace is controlled at 1500-1600℃, when the temperature reaches the melting temperature, the C element is added first, and then the other elements are added at one time; ② After the addition is completed, the melt is subjected to ultrasonic + mechanical stirring treatment and left to stand for 30 minutes to ensure uniform distribution of trace alloy elements; ③ Casting to obtain nickel ingot; ④Finally, the nickel ingot is forged, extruded, hot rolled and other processes to obtain nickel wire, and then drawn, heat treated and other processes to obtain fine nickel wire with a diameter of φ0.03mm. The prepared fine nickel wire has a tensile strength of 420MPa and an elongation of 20%, which meets the needs of weaving mesh.

[0019] Example 4 A fine nickel wire for the metal mesh industry, comprising the following components in percentage by mass: Ni: ≥99.5%, C: 0.038%, Cu: ≤0.01%, Mn: 0.10%, Si: ≤0.03%, Ti: ≤0.01%, and the remainder is impurities. The content of each element in the impurities is less than 0.02%.

[0020] The method for preparing the fine nickel wire for the metal mesh industry comprises the following steps: ① First, place the high-purity electrolytic nickel plate in a vacuum melting furnace. The vacuum degree is guaranteed to be ≤1x10 -2 Pa high vacuum environment; the temperature of the vacuum melting furnace is controlled at 1500-1600℃, when the temperature reaches the melting temperature, the C element is added first, and then the other elements are added at one time; ② After the addition is completed, the melt is subjected to ultrasonic + mechanical stirring treatment and left to stand for 20 minutes to ensure uniform distribution of trace alloy elements; ③ Casting to obtain nickel ingot; ④Finally, the nickel ingot is forged, extruded, hot rolled and other processes to obtain nickel wire, and then drawn, heat treated and other processes to obtain fine nickel wire with a diameter of φ0.03 mm. The prepared fine nickel wire has a tensile strength of 480 MPa and an elongation of 16%, which meets the needs of weaving mesh.

[0021] Comparative Example 1 A fine nickel wire for the metal mesh industry, comprising the following components in percentage by mass: Ni: ≥99.5%, C: 0.029%, Cu: ≤0.01%, Mn: 0.05%, Si: ≤0.03%, Ti: ≤0.01%, the content of other elements is less than 0.02%, and the rest is impurities. The content of each element in the impurities is less than 0.02%.

[0022] The method for preparing the fine nickel wire for the metal mesh industry comprises the following steps: ① First, place the high-purity electrolytic nickel plate in a vacuum melting furnace. The vacuum degree is guaranteed to be ≤1x10-2 Pa high vacuum environment; the temperature of the vacuum melting furnace is controlled at 1500-1600℃, when the temperature reaches the melting temperature, the C element is added first, and then the other elements are added at one time; ② After the addition is completed, the melt is subjected to ultrasonic + mechanical stirring treatment and left to stand for 20 minutes to ensure uniform distribution of trace alloy elements; ③ Casting to obtain nickel ingot; ④Finally, the nickel ingot is subjected to forging, extrusion, hot rolling and other processes to obtain nickel wire, and then drawing, heat treatment and other processes to obtain fine nickel wire with a diameter of φ0.04 mm. The prepared fine nickel wire has a tensile strength of 360 MPa and an elongation of 17%, which cannot meet the needs of weaving mesh.

[0023] Comparative Example 2 A fine nickel wire for the metal mesh industry, comprising the following components in percentage by mass: Ni: ≥99.5%, C: 0.042%, Cu: ≤0.01%, Mn: 0.05%, Si: ≤0.03%, Ti: ≤0.01%, the remainder is impurities. The content of each element in the impurities is less than 0.02%.

[0024] The method for preparing the fine nickel wire for the metal mesh industry comprises the following steps: ① First, place the high-purity electrolytic nickel plate in a vacuum melting furnace. The vacuum degree is guaranteed to be ≤1x10 -2 Pa high vacuum environment; the temperature of the vacuum melting furnace is controlled at 1500-1600℃, when the temperature reaches the melting temperature, the C element is added first, and then the other elements are added at one time; ② After the addition is completed, the melt is subjected to ultrasonic + mechanical stirring treatment and left to stand for 20 minutes to ensure uniform distribution of trace alloy elements; ③ Casting to obtain nickel ingot; ④Finally, the nickel ingot is subjected to forging, extrusion, hot rolling and other processes to obtain nickel wire, and then drawing, heat treatment and other processes are used to obtain fine nickel wire with a diameter of φ0.1 mm. The prepared fine nickel wire has a tensile strength of 370 MPa and an elongation of 12%, which cannot meet the needs of weaving mesh.

[0025] Comparative Example 3 A fine nickel wire for the metal mesh industry, comprising the following components in percentage by mass: Ni: ≥99.5%, C: 0.03%, Cu: ≤0.01%, Mn: 0.04%, Si: ≤0.03%, Ti: ≤0.01%, the remainder is impurities. The content of each element in the impurities is less than 0.02%.

[0026] The method for preparing the fine nickel wire for the metal mesh industry comprises the following steps: ① First, place the high-purity electrolytic nickel plate in a vacuum melting furnace. The vacuum degree is guaranteed to be ≤1x10 -2 Pa high vacuum environment; the temperature of the vacuum melting furnace is controlled at 1500-1600℃, when the temperature reaches the melting temperature, the C element is added first, and then the other elements are added at one time; ② After the addition is completed, the melt is subjected to ultrasonic + mechanical stirring treatment and left to stand for 20 minutes to ensure uniform distribution of trace alloy elements; ③ Casting to obtain nickel ingot; ④Finally, the nickel ingot is subjected to forging, extrusion, hot rolling and other processes to obtain nickel wire, and then drawing, heat treatment and other processes to obtain fine nickel wire with a diameter of φ0.06 mm. The prepared fine nickel wire has a tensile strength of 360 MPa and an elongation of 14%, which cannot meet the needs of weaving mesh.

[0027] Comparative Example 4 A fine nickel wire for the metal mesh industry, comprising the following components in percentage by mass: Ni: ≥99.5%, C: 0.03%, Cu: ≤0.01%, Mn: 0.13%, Si: ≤0.03%, Ti: ≤0.01%, the remainder is impurities. The content of each element in the impurities is less than 0.02%.

[0028] The method for preparing the fine nickel wire for the metal mesh industry comprises the following steps: ① First, place the high-purity electrolytic nickel plate in a vacuum melting furnace. The vacuum degree is guaranteed to be ≤1x10 -2 Pa high vacuum environment; the temperature of the vacuum melting furnace is controlled at 1500-1600℃, when the temperature reaches the melting temperature, the C element is added first, and then the other elements are added at one time; ② After the addition is completed, the melt is subjected to ultrasonic + mechanical stirring treatment and left to stand for 20 minutes to ensure uniform distribution of trace alloy elements; ③ Casting to obtain nickel ingot; ④Finally, the nickel ingot is subjected to forging, extrusion, hot rolling and other processes to obtain nickel wire, and then drawing, heat treatment and other processes are used to obtain fine nickel wire with a diameter of φ0.12 mm. The prepared fine nickel wire has a tensile strength of 370 MPa and an elongation of 10%, which cannot meet the needs of weaving mesh.

Claims

1. A fine nickel wire for metal mesh industry, characterized in that It is composed of the following components in mass percentage: Ni ≥ 99.5%, C 0.03-0.04%, Cu ≤ 0.01%, Mn 0.05-0.12%, Si ≤ 0.03%, Ti ≤ 0.01%, and the remainder is impurities.

2. The fine nickel wire for metal mesh industry as claimed in claim 1, characterized in that: The content of each element in the impurities is less than 0.02%.

3. The method for preparing fine nickel wire for metal mesh industry as claimed in claim 1, characterized in that The following steps are involved: ① First, place the high-purity electrolytic nickel plate in a vacuum melting furnace. The vacuum degree is guaranteed to be ≤1x10 -2 Pa high vacuum environment; the temperature of the vacuum melting furnace is controlled at 1500-1600℃, when the temperature reaches the melting temperature, the C element is added first, and then the other elements are added at one time; ② After the addition is completed, the melt is subjected to ultrasonic + mechanical stirring treatment and left to stand for 5-30 minutes to ensure uniform distribution of trace alloy elements; ③ Casting to obtain nickel ingot; ④Finally, the nickel ingot is forged, extruded and hot-rolled to obtain nickel wire, and then the fine nickel wire that meets the mesh weaving requirements is obtained through drawing and heat treatment processes.

4. The method for preparing fine nickel wire for metal mesh industry as claimed in claim 1, characterized in that The tensile strength σb of the prepared fine nickel wire is ≥380MPa, and the elongation δ is ≥15%.