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High-strength and low-resistance alloy wire and preparation method thereof

A technology of alloy wire and low resistance, applied in the field of high-strength and low-resistance alloy wire and its preparation, can solve the problems of damage to the mechanical properties of the product, easy to break down, etc., and achieve the effect of good mechanical properties and high strength

Inactive Publication Date: 2016-06-22
JIANGYIN CHENGXIN ALLOY MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since silicon has the characteristics of strengthening the material, in order to increase the strength, silicon is generally added to the raw material of the alloy wire, but only a small amount of silicon (0.1%-0.2% of the total mass) can be added. At this time, the grain size in the alloy wire is 15 -25μm, with the increase of silicon content, the product is prone to annealing during the annealing process during production, causing the mechanical properties of the product to be damaged
Therefore, the traditional low-resistance alloy wire cannot have high strength and good mechanical properties at the same time.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The preparation method of the above-mentioned high-strength low-resistance alloy wire is as follows:

[0027] Step 1. Raw material preparation;

[0028] Step 2. Vacuum smelting: put the nickel and copper prepared in step 1 into the crucible of the vacuum smelting furnace, and put the rest of the raw materials (silicon and manganese) in the hopper to be put in. Check and heat the vacuum smelting furnace to make the nickel and copper After full melting, start to add the rest of the raw materials, refining after the addition is completed, calm down after refining, and then electrified pouring, the pouring temperature is 1350-1400°C, after the pouring is completed, it is cooled with the furnace, and the furnace is released after breaking the vacuum;

[0029] Step 3, hot forging: hot forging the nails obtained after vacuum smelting in step 2, the alloy heating temperature is 800-850°C, and the holding time is 40-45 minutes;

[0030] Step 4, hot rolling: hot rolling the squa...

Embodiment 1

[0041] A high-strength and low-resistance alloy wire, the mass fraction of each component of the chemical composition of the alloy wire is as follows: 3 parts of nickel, 0.8 part of silicon, 95 parts of copper, and 0.5 part of manganese. The annealing temperature after the fifth wire drawing was 580°C, and the resistivity of the obtained high-strength and low-resistance alloy wire was 0.029Ω·m; the strength was 440Mpa; and the number of bending times was 7500.

Embodiment 2

[0043] A high-strength and low-resistance alloy wire, the mass fraction of each component of the chemical composition of the alloy wire is as follows: 5 parts of nickel, 1 part of silicon, 90 parts of copper, and 0.35 parts of manganese. The annealing temperature after the fifth wire drawing was 580°C, and the resistivity of the obtained high-strength and low-resistance alloy wire was 0.032Ω·m; the strength was 510Mpa; and the number of bending times was 9000.

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Abstract

The invention relates to a high-strength and low-resistance alloy wire. The alloy wire is characterized by comprising the following chemical components in parts by mass: 3-5 parts of nickel, 0.8-1 part of silicon, 90-98 parts of copper, and 0.2-0.5 part of manganese. A preparation method of the high-strength and low-resistance alloy wire comprises the steps of: (1) preparation of raw materials; (2) vacuum smelting; (3) hot calcining; (4) hot rolling: a square forging stock obtained in the step (3) is hotly rolled to form a steel wire rod with a diameter of 7-8 mm; (5) acid washing; (6) annealing: the steel wire rod obtained in the step (5) is annealed; and (7) wire drawing: the steel wire rod annealed in the step (6) performs the wire drawing and the annealing treatment in sequence, and performs five times of the wire drawing to reach a needed alloy wire diameter. The high-strength and low-resistance alloy wire synchronously has the advantages of higher strength and better mechanical performance.

Description

technical field [0001] The invention relates to a high-strength low-resistance alloy wire and a preparation method thereof. Background technique [0002] For automotive heating wires, it needs to have good bending resistance, so the high-strength and low-resistance alloy wire used to make automotive heating wires must be high-strength and resistant to bending. The strength of traditional low-resistance alloy wires used to make car heating wires cannot meet the requirements. Since silicon has the characteristics of strengthening the material, in order to increase the strength, silicon is generally added to the raw material of the alloy wire, but only a small amount of silicon (0.1%-0.2% of the total mass) can be added. At this time, the grain size in the alloy wire is 15 -25μm, as the silicon content increases, the product is prone to annealing during the annealing process during production, causing the mechanical properties of the product to be damaged. Therefore, the trad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C1/02C22F1/08
CPCC22C9/06C22C1/02C22F1/08
Inventor 曹兴东王忠敏
Owner JIANGYIN CHENGXIN ALLOY MATERIAL CO LTD