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Copper-based resistance material and preparation method and application thereof

A resistance material, copper-based technology, applied in metal rolling and other directions, can solve problems such as difficulty in ensuring alloy composition, high temperature coefficient of resistance, and burning loss of manganese and nickel elements, and achieve improved composition uniformity, low temperature coefficient of resistance, and stability The effect of resistivity

Active Publication Date: 2021-08-27
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the high temperature coefficient of resistance and poor stability of copper-based resistance materials in the prior art, and the difficulty in ensuring the alloy composition in the process of copper-based materials, resulting in serious burning of manganese and nickel elements, and melt gas absorption. Serious, long production process, high energy consumption and other defects, thus providing a copper-based resistance material and its preparation method and application

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  • Copper-based resistance material and preparation method and application thereof

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Embodiment 1

[0048] This embodiment provides a copper-based resistance material, in terms of mass fraction, its components include 14wt% manganese, 2wt% aluminum, 0.5wt% nickel, 1.5wt% iron, 1wt% silicon, and the balance is copper and unavoidable impurities, wherein the impurity content is less than 50ppm, and the oxygen content is less than 5ppm.

[0049] The preparation method of above-mentioned copper-based resistance material, comprises the steps:

[0050] (1) Preheating: graphite crucible furnace is selected as the melting equipment. The melting equipment includes a melting bin and a casting bin. The bottoms of the two bins are connected through an undercurrent communication device. Whether they are connected is controlled by a stopper; the melting bin is used for heating to melt the raw materials to form Melt; the casting chamber is used for upward casting, and the crystallizer is installed above the casting chamber. The heating electrodes are located on the bottom and side of the c...

Embodiment 2

[0062] This embodiment provides a copper-based resistance material, its composition includes 12wt% manganese, 3wt% aluminum, 0.5wt% nickel, 0.5wt% iron, 0.5wt% silicon, and the balance is copper and Impurities to avoid, wherein the impurity content is less than 50ppm, and the oxygen content is less than 5ppm.

[0063] The preparation method of above-mentioned copper-based resistance material, comprises the steps:

[0064] (1) Preheating: graphite crucible furnace is selected as the melting equipment. The melting equipment includes a melting bin and a casting bin. The bottoms of the two bins are connected through an undercurrent communication device. Whether they are connected is controlled by a stopper; the melting bin is used for heating to melt the raw materials to form Melt; the casting chamber is used for upward casting, and the crystallizer is installed above the casting chamber. The heating electrodes are located on the bottom and side of the crucible, and the melting c...

Embodiment 3

[0073] This embodiment provides a copper-based resistance material, in terms of mass fraction, its components include 11wt% manganese, 3wt% aluminum, 0.5wt% nickel, 1.5wt% iron, 1.5wt% silicon, and the balance is copper and Impurities to avoid, wherein the impurity content is less than 50ppm, and the oxygen content is less than 5ppm.

[0074] The preparation method of above-mentioned copper-based resistance material, comprises the steps:

[0075] (1) Preheating: graphite crucible furnace is selected as the melting equipment. The melting equipment includes a melting bin and a casting bin. The bottoms of the two bins are connected through an undercurrent communication device. Whether they are connected is controlled by a stopper; the melting bin is used for heating to melt the raw materials to form Melt; the casting chamber is used for upward casting, and the crystallizer is installed above the casting chamber. The heating electrodes are located on the bottom and side of the cr...

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Abstract

The invention belongs to the technical field of resistance material preparation, and particularly relates to a copper-based resistance material and a preparation method and application thereof. The copper-based resistance material comprises the following components: manganese, aluminum, nickel, iron, silicon and the balance of copper and impurities. Manganese and nickel can significantly reduce the conductivity of the copper-based resistance material, so that the material has high resistivity. The structural characteristics of the copper-based resistance material are effectively regulated and controlled through the compound addition of the trace elements of aluminum, iron and silicon, the elements enter crystal lattices of copper through solid solution, the influence of temperature on atomic vibration is reduced, the resistance temperature coefficient of the copper-based resistance material is improved, and the lower resistance temperature coefficient and the more stable resistivity are obtained. Through reasonable addition of the iron element, the alloy structure in the material is effectively refined, and the component uniformity is improved. The alloy melt flowability of the resistance material can be improved by adding a specific amount of aluminum element, and the component uniformity and the yield of an upward continuous casting blank of the copper-based resistance material are improved.

Description

technical field [0001] The invention belongs to the technical field of resistance material preparation, and in particular relates to a copper-based resistance material and its preparation method and application. Background technique [0002] Precision resistance material is a metal material used to make precision resistance. Precision resistance material refers to a material whose absolute value of the temperature coefficient of resistance and the absolute value of the thermal electromotive force to copper are small and stable, and the resistance value characteristic is the main characteristic. The temperature stability of alloy materials for precision resistors is higher than that of ordinary resistors. Within a certain temperature range, the error requirements of precision resistors are much smaller than those of ordinary resistors. Copper-based precision resistance material is the most valuable resistance material in the non-high temperature field, with the most extensive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/05C22C1/02C22F1/02C22F1/08B21B1/24
CPCC22C9/05C22C1/02C22F1/02C22F1/08B21B1/24
Inventor 李明茂谢伟滨张雨彩
Owner JIANGXI UNIV OF SCI & TECH
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