High resistivity nickel wire and preparation method thereof

A technology of high resistivity and nickel wire, which is applied in the field of metal material processing, can solve the problems of unstable temperature coefficient and inability to use heating wires, and achieve the effects of stable temperature coefficient, reduced wire breakage rate, and reduced burrs

Inactive Publication Date: 2012-10-03
常丰(无锡)金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] One of the objectives of the present invention is to provide a high-resistivity nickel wire with a stable temperature coefficient, which solves the problem that the national standard nickel wire has an unstable temperature coefficient and cannot be used in the heating wire industry.

Method used

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  • High resistivity nickel wire and preparation method thereof
  • High resistivity nickel wire and preparation method thereof
  • High resistivity nickel wire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] The preparation method of the nickel wire described in embodiment 1 is as follows:

[0065] (1) Mix and smelt Ni, Mn, Si, Ti, and rare earth, peel and forge the obtained ingot;

[0066] (2) After drawing the forged billet to obtain a filament with a diameter of 8.0mm, draw it again to obtain a filament with a diameter of 4.0mm, then anneal it, draw it again to obtain a filament with a diameter of 1.0mm, anneal it, and then draw it again Annealed after drawing to obtain a filament with a diameter of 0.3mm, and then annealed after drawing again to obtain a filament with a diameter of 0.15mm, and finally obtained a filament with a diameter of 0.15mm.

Embodiment 2

[0067] The preparation method of the nickel wire described in embodiment 2 is as follows:

[0068] (1) Mix and smelt Ni, Mn, Si, Ti, and rare earth, peel and forge the obtained ingot;

[0069] (2) Drawing the forged billet to obtain a filament with a diameter of 0.15 mm, and then annealing to obtain a nickel wire with a diameter of 0.15 mm.

Embodiment 3

[0070] The preparation method of the nickel wire described in embodiment 3 is as follows:

[0071] (1) Mix and smelt Ni, Mn, Si, Ti, and rare earth, peel and forge the obtained ingot;

[0072] (2) After drawing the forged billet to obtain a filament with a diameter of 4.0mm, draw it again to obtain a filament with a diameter of 1.0mm, then anneal it, draw it again to obtain a filament with a diameter of 0.3mm, anneal it, and draw it again The filaments with a diameter of 0.15 mm are pulled out and then annealed to finally obtain filaments with a diameter of 0.15 mm.

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Abstract

The invention relates to a high resistivity nickel wire. The nickel wire comprises 99.5-99.94% of Ni, 0.035-0.26% of Mn, 0.026-0.24% of Si, less than 0.03% of Ti and less than 0.03% of rare earth in mass percentages. The invention also discloses a preparation method for the nickel wire. The nickel wire provided by the invention has the advantages that the resistivity is greater than 0.092 omega.mm<2> / m and is obviously higher than the 0.07 omega.mm<2> / m resistivity of the existing national standard nickel wire, and the temperature coefficient is stable and is 0.0045+0.0002, thereby solving the problem that as the temperature coefficient of the national standard nickel wire is unstable, the service life of an electrical appliance is short when the national standard nickel wire is used in heating industries; and compared with the prior art, the high resistivity nickel wire has very remarkable effect.

Description

technical field [0001] The invention relates to the technical field of metal material processing, in particular, the invention relates to a high-resistivity nickel wire and a preparation method thereof. Background technique [0002] Pure nickel is a silver-white metal with excellent corrosion resistance, high electric vacuum performance and electromagnetic control performance, and is widely used in chemical industry, mechanical electronics, food and other fields. Pure nickel has excellent welding performance and processing performance. [0003] Pure nickel has good electrical conductivity and corrosion resistance, high melting point, good machinability and formability; it has a good influence on the emissivity of the cathode, and has a suitable resistivity, good radiation coefficient, and thermal conductivity Large, therefore, it is mostly used for corrosion-resistant components. Important parts of precision instrument structures and medical equipment, such as chemical cor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/03C22F1/10B21C37/04
Inventor 周丹孙科军
Owner 常丰(无锡)金属制品有限公司
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