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Copper rod manufacturing method

A manufacturing method, copper rod technology, applied in manufacturing tools, chemical instruments and methods, metal rolling, etc., can solve problems such as poor anti-oxidation effect, inability to produce electrical products, and easy washing of antioxidants

Inactive Publication Date: 2021-05-18
HANGZHOU FUTONG ELECTRIC WIRE & CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the oxygen-free copper rod is placed for a long time, the surface oxidation is serious, which makes it impossible to produce qualified electrical products in the future
The common method is to attach a layer of antioxidant on the surface of the copper rod, which has the disadvantages that the anti-oxidation effect is not good and the antioxidant is easily washed off.

Method used

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Examples

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Effect test

preparation example 1

[0032] Preparation Example 1 Preparation of Substituted Salicylaldehyde Schiff Base Corrosion Inhibitors

[0033] synthetic route:

[0034]

[0035] Preparation method: Dissolve 1mol of octadecylamine in 200mL of organic solvent, add 3A molecular sieve and ferric chloride solution, the amount of molecular sieve added is 2% of the total system mass, the mass percentage of ferric chloride in the ferric chloride solution 10%, the rest is the same organic solvent as the system, the addition of ferric chloride is 1% of the total mass of the system, after stirring and mixing evenly, 0.9mol 5-nitrosalicylaldehyde solution is added dropwise, after the dropwise addition, After 3 hours of reflux reaction, add an equal volume of saturated sodium bicarbonate solution, separate layers, extract the aqueous layer twice with an organic solvent, combine the organic phases, concentrate under reduced pressure, and recrystallize to obtain a corrosion inhibitor containing substituted salicylald...

preparation example 2

[0036] Preparation Example 2 Preparation of Substituted Salicylaldehyde Schiff Base Corrosion Inhibitors

[0037] Preparation method: Dissolve 1mol of cetylamine in 200mL of organic solvent, add 3A molecular sieve and ferric chloride solution, the amount of molecular sieve added is 5% of the total system mass, the mass percentage of ferric chloride in the ferric chloride solution 10-15%, and the rest is the same organic solvent as the system. The amount of ferric chloride added is 2% of the total mass of the system. After stirring and mixing evenly, add 1.1mol 5-chloro salicylaldehyde solution dropwise. , after reflux for 5 hours, add an equal volume of saturated sodium bicarbonate solution, separate the layers, extract the aqueous layer with an organic solvent for 3 times, combine the organic phases, concentrate under reduced pressure, and recrystallize to obtain the Schiff base buffer containing substituted salicylaldehydes. Etching agent, the yield is 97%.

preparation example 3

[0038] Preparation Example 3 Coolant

[0039] Composition of raw materials (parts by weight): 2 parts of substituted salicylaldehyde-containing Schiff base corrosion inhibitors prepared in Preparation Example 1, 1 part of n-tetradecyl mercaptan, 20 parts of antifreeze, 100 parts of water, 2 parts of additives share. The additives include a pH regulator and a preservative, and the mass ratio of the pH regulator and the preservative is 10:1.

[0040] Preparation method: Dissolve each component in water in proportion and mix evenly to obtain cooling liquid.

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Abstract

The invention provides a copper rod manufacturing method. The manufacturing method comprises the following steps of: S1, a copper melting procedure; S2, a rod casting procedure; S3, a rolling procedure; S4, a cooling procedure: cooling the rolled copper rod through cooling liquid; S5, a blow-drying procedure; and S6, a winding process; specifically, the cooling liquid is prepared from the following raw materials by weight: 2-7 parts of a substituted salicylaldehyde-containing Schiff base corrosion inhibitor, 1-4 parts of long-chain alkyl mercaptan, 20-30 parts of an anti-freezing agent, 100-200 parts of water and 2-5 parts of an additive. A compound antioxidant is added into the cooling liquid in the cooling procedure, an anti-oxidation film is formed on the surface of the copper rod, a long-time anti-oxidation effect is achieved, and the situation that black spots are formed on the surface of copper, and consequently the electric conduction, heat conduction and signal transmission performance of copper are affected is avoided.

Description

technical field [0001] The invention relates to the technical field of copper rods, in particular to a method for manufacturing copper rods. Background technique [0002] Oxygen-free copper rods refer to copper rods with an oxygen content below 20ppm, which have important applications in the electrical field. At present, oxygen-free copper rods are mainly produced by dip-coating and up-drawing methods. The main processes are melting, casting, rolling, cooling, drying, and winding of copper plates to produce bright oxygen-free copper rods for electrical purposes. . After the oxygen-free copper rod is placed for a long time, the surface oxidation is serious, which makes it impossible to produce qualified electrical products in the future. The common method is to attach a layer of antioxidant on the surface of the copper rod, which has the disadvantages that the antioxidant effect is not good and the antioxidant is easily washed away. Contents of the invention [0003] The...

Claims

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Application Information

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IPC IPC(8): C09K5/20C23F11/14B21B1/46B21B45/02
CPCC09K5/20C23F11/146B21B1/46B21B45/0206
Inventor 王华锋张小有寿荣
Owner HANGZHOU FUTONG ELECTRIC WIRE & CABLE
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