An ultra-high-speed continuous wire drawing process for manufacturing iron-chromium alloy wire

Abstract

The present invention discloses an ultra-high-speed continuous wire drawing process for manufacturing iron-chromium alloy wire, and the specific steps include: 1) coating treatment: placing a large diameter blank into a coating solution for coating treatment; 2) blank heating: placing the large diameter blank after the coating treatment in step 1) into an oven for heating; 3) wire drawing forming: placing the large diameter blank heated in step 2) into a wire drawing machine, and passing through multiple dies in sequence to form a small diameter alloy wire. Through the above method, the present invention provides an ultra-high-speed continuous wire drawing process for manufacturing iron-chromium alloy wire, which can continuously draw and form the blank from a large diameter to a small diameter, and immediately enters the second process after the first process is completed. The processes are continuous until forming, which keeps the surface temperature of the material consistent, ensures the stability of the molecular structure of the material and the uniformity of resistance, and reduces waste and power consumption.

Description

Technical Field

[0001] The invention relates to the field of iron-chromium alloy wire processing, in particular to an ultra-high-speed continuous wire drawing process for manufacturing iron-chromium alloy wire. Background Art

[0002] Iron-chromium alloy wire is an alloy material containing iron and chromium, with good corrosion resistance and high temperature resistance, high mechanical strength, good electrical conductivity and thermal conductivity. It is mainly used in electric heating elements, wear-resistant materials, chemical industry and welding materials.

[0003] The production process of Fe-Cr alloy wire usually involves multiple steps, generally including: raw material preparation, smelting, casting, heat treatment, rolling and wire drawing, surface treatment, inspection and storage and transportation.

[0004] The traditional wire drawing process requires the blank to be drawn in lanes and sections when it is pulled from a large diameter to a small diameter. After one drawing is completed, it is cooled and then drawn a second time. This tends to increase the hardness of the material, making it easy to break during the second drawing, which can easily cause waste. In addition, the turnover is cumbersome and greatly wastes labor. Summary of the invention

[0005] The main technical problem solved by the present invention is to provide an ultra-high-speed continuous wire drawing process for manufacturing iron-chromium alloy wire, and the blank can be continuously drawn and formed when being drawn from a large diameter to a small diameter.

[0006] In order to solve the above technical problems, a technical solution adopted by the present invention is to provide an ultra-high-speed continuous wire drawing process for manufacturing iron-chromium alloy wire, and the specific steps include:

[0007] 1) Coating treatment: Place the large diameter blank into the coating solution for coating treatment;

[0008] 2) Heating the blank: placing the large-diameter blank after the coating treatment in step 1) into an oven for heating;

[0009] 3) Wire drawing: The large diameter blank heated in step 2) is placed in a wire drawing machine and passes through multiple dies in sequence to form a small diameter alloy wire.

[0010] In a preferred embodiment of the present invention, the coating solution is prepared by adding powdered lubricant and deionized water, and the concentration of the coating solution is 20%.

[0011] In a preferred embodiment of the present invention, the powdered lubricant is molybdenum disulfide.

[0012] In a preferred embodiment of the present invention, the large diameter blank in step 1) needs to be heated during the coating process, the temperature is controlled at 90° to 100°, and after keeping warm for 45 minutes, it is taken out, cooled, and then dried.

[0013] In a preferred embodiment of the present invention, the temperature of the baking oven in step 2) is controlled at 140° to 200°.

[0014] In a preferred embodiment of the present invention, the diameter difference between two adjacent molds in step 3) decreases successively.

[0015] The beneficial effects of the present invention are as follows: the present invention is an ultra-high-speed continuous wire drawing process for manufacturing iron-chromium alloy wire. The process can continuously draw and shape the blank when it is drawn from a large diameter to a small diameter. After the first process is completed, the second process is immediately entered. The processes are continuous until the forming is achieved, thereby maintaining the consistency of the material surface temperature, ensuring the stability of the material molecular structure and the uniformity of resistance, and reducing waste and power consumption. DETAILED DESCRIPTION

[0016] The preferred embodiments of the present invention are described in detail below so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0017] An ultra-high-speed continuous wire drawing process for manufacturing iron-chromium alloy wire, the specific steps comprising:

[0018] 1) Coating treatment: Place the large diameter blank into the coating solution for coating treatment. The large diameter blank needs to be heated during the coating treatment, and the temperature is controlled at 90°~100°. After keeping warm for 45 minutes, take it out, cool it, and then dry it. During drying, the solvent of the coating solution will evaporate, but some solvent may remain inside.

[0019] 2) Heating the blank: the large diameter blank after the coating treatment in step 1) is placed in an oven for heating, and the temperature of the baking oven is controlled at 140° to 200°. The residual solvent in step 1) will cause structural instability of the coating and affect the final quality of the coating. Baking in the baking oven can help completely remove the residual solvent, ensure the density and stability of the coating, and thus improve the durability of the coating.

[0020] 3) Wire drawing: The large diameter billet heated in step 2) is placed in a wire drawing machine, and is made into a small diameter alloy wire after passing through multiple dies in sequence. The diameter difference between two adjacent dies decreases in sequence. By gradually reducing the die size, wire drawing can better control the plastic deformation of the metal, avoid excessive deformation causing cracks or uneven deformation of the material, and allow the metal to pass through the die more smoothly during the stretching process, thereby reducing surface defects and ensuring the surface quality of the product.

[0021] The coating solution is prepared by adding powdered lubricant and deionized water. The concentration of the coating solution is 20%. The powdered lubricant is molybdenum disulfide. 20 grams of molybdenum disulfide and 80 grams of deionized water are weighed, and 20 grams of molybdenum disulfide powder is slowly added to 80 grams of deionized water. A mechanical stirrer or an ultrasonic disperser is used to stir the powder so that the powder is evenly dispersed in the water. The stirring is continued for 10-30 minutes to obtain a coating solution.

[0022] Example 1

[0023] 5.5mm billet is drawn into 1.4mm alloy wire

[0024] 1) Coating treatment: Put the 5.5 mm blank into 20% coating solution for coating treatment, heat to °, keep warm for 45 minutes, take out, cool and dry.

[0025] 2) Blank heating: The 5.5 mm blank treated with the coating in step 1) is placed in an oven for heating at a temperature of 170°.

[0026] 3) Wire drawing: The 5.5 mm billet heated in step 2) is placed in a wire drawing machine and passed through 9 dies in sequence to form a small diameter alloy wire, wherein the sizes of the 9 dies are 4.6 mm, 3.8 mm, 3.2 mm, 2.7 mm, 2.3 mm, 2 mm, 1.75 mm, 1.55 mm and 1.4 mm, respectively.

[0027] Compared with the prior art, the present invention provides an ultra-high-speed continuous wire drawing process for manufacturing iron-chromium alloy wire. This process can continuously draw and shape the blank when it is pulled from a large diameter to a small diameter. After the first process is completed, the second process is immediately entered. The processes are continuous until the forming is achieved, thereby maintaining a consistent surface temperature of the material, ensuring the stability of the material's molecular structure and the uniformity of resistance, and reducing waste and power consumption.

[0028] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An ultra-high speed continuous wire drawing process for manufacturing iron-chromium alloy wire, characterized in that: The specific steps include: 1) Coating treatment: Place the large diameter blank into the coating solution for coating treatment; 2) Heating the blank: placing the large-diameter blank after the coating treatment in step 1) into an oven for heating; 3) Wire drawing: The large diameter blank heated in step 2) is placed in a wire drawing machine and passes through multiple dies in sequence to form a small diameter alloy wire.

2. The ultra-high speed continuous wire drawing process for manufacturing iron-chromium alloy wire according to claim 1, characterized in that: The coating solution is prepared by adding powdered lubricant and deionized water, and the concentration of the coating solution is 20%.

3. The ultra-high speed continuous wire drawing process for manufacturing iron-chromium alloy wire according to claim 1, characterized in that: The powdered lubricant is molybdenum disulfide.

4. The ultra-high speed continuous wire drawing process for manufacturing iron-chromium alloy wire according to claim 1, characterized in that: The large diameter blank in step 1) needs to be heated during the coating process, and the temperature is controlled at 90° to 100°. After keeping the temperature for 45 minutes, the blank is taken out, cooled, and then air-dried.

5. The ultra-high-speed continuous wire drawing process for manufacturing iron-chromium alloy wire according to claim 1, characterized in that: In step 2), the temperature of the baking oven is controlled at 140° to 200°.

6. The ultra-high speed continuous wire drawing process for manufacturing iron-chromium alloy wire according to claim 1, characterized in that: In the step 3), the diameter difference between two adjacent molds decreases successively.