Copper alloy material for resistance member, manufacturing method therefor, and resistor

A resistance material and manufacturing method technology, applied in the direction of resistors, manufacturing tools, electrical components, etc., to achieve good laser weldability

Active Publication Date: 2019-08-23
FURUKAWA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Along with this, there is a discrepancy between the size of the resistive material required for the manufacture of the resistor and the size calculated from the measured value of the resistivity, which causes problems in the design of the resistor

Method used

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  • Copper alloy material for resistance member, manufacturing method therefor, and resistor
  • Copper alloy material for resistance member, manufacturing method therefor, and resistor
  • Copper alloy material for resistance member, manufacturing method therefor, and resistor

Examples

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Embodiment

[0062] Examples and comparative examples are shown below to explain the present invention more specifically.

[0063] An ingot having a predetermined alloy composition is produced by casting (casting process), and after performing a heat treatment of 800°C or higher and 950°C or less, 10 minutes or longer and 10 hours or less to homogenize the alloy components (homogenization heat treatment step), It was formed into a plate shape by hot rolling and water-cooled (hot rolling process). Next, face cutting is performed on the plate material obtained by hot rolling to remove the oxide film on the surface (face cutting process), and then the plate material is cold rolled at a working rate of 50% or more to make the plate thickness thinner to produce a rolled Plate making (cold rolling process).

[0064] Next, the rolled sheet is heat-treated under the conditions of 350°C or higher and 700°C or lower, 10 seconds or longer and 10 hours or shorter, and recrystallization annealing is perfor...

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Abstract

Provided are: a copper alloy material for a resistance member having favorable laser weldability, said copper alloy material being capable of easily obtaining a correct measured value in the measurement of electrical resistivity; and a method for manufacturing the copper alloy material. The copper alloy material for a resistance member is a rolled sheet having a thickness t of 0.04 mm or more whenmeasured using a contact-type film thickness gauge, and the copper alloy material comprises 2-14 mass% of manganese with the remainder comprising copper and unavoidable impurities. Further, when theroughness curve in a direction orthogonal to the rolling direction is acquired using a contact-type surface roughness measurement technique, the sheet surface of the rolled sheet has a maximum heightRz of 0.3-1.5 mu m, an average length of roughness curve elements RSm of 0.03-0.15 mm, and a value of a parameter A of 0.002-0.04.

Description

Technical field [0001] The invention relates to a copper alloy material for resistance material, a manufacturing method thereof, and a resistor. Background technique [0002] For the metal material of the resistance material used in the resistor, in order to keep the resistance of the resistor stable even when the ambient temperature changes, a small temperature coefficient of resistance (hereinafter sometimes referred to as "TCR") is required. The so-called temperature coefficient of resistance is a coefficient that expresses the magnitude of the change in resistance value caused by temperature in parts per million per 1°C. TCR (×10 -6 / K)=(R-R 0 ) / R 0 ×1 / (T-T 0 )×10 6 The formula to express. Here, T in the formula represents the test temperature (℃), T 0 Represents the reference temperature (℃), R represents the resistance value (Ω) at the test temperature T, R 0 Indicates test temperature T 0 Resistance value (Ω) below. Since the TCR of Cu-Mn-Ni alloy or Cu-Mn-Sn alloy is ver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/05C22C9/02C22C9/06C22F1/08H01C13/00B23K26/21B24B29/00C22F1/00
CPCB23K26/21B24B29/00C22C9/02C22C9/05C22C9/06C22F1/00C22F1/08H01C13/00
Inventor 檀上翔一秋谷俊太藤井恵人樋口优
Owner FURUKAWA ELECTRIC CO LTD
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