MEMBER FOR RESISTOR, PRODUCTION METHOD THEREOF, AND RESISTOR

• Main Authors: MORITA AKIRA, MIHARA KUNITERU, UMENO KAZUYUKI, YASUOKA TOMOMICHI, YOSHIZAKI TATSUYA, SUGAWARA CHIKATO
• Format: Patent
• Language: English; Japanese
• Published: 24.01.2024
• Subjects: BASIC ELECTRIC ELEMENTS; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; ELECTRICITY; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; RESISTORS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

To provide a member for a resistor, which is superior in bendability of a junction, and which enables the suppression of production of burr from the surface of the junction and the reduction of a rate of a resistance change to a temperature change, a production method thereof, and a resistor.SOLUTION: A member for a resistor comprises a first metal member 10 and a second metal member 20 which are joined to each other through a junction 30. The first metal member contains Cu of 99.96 mass% or more. The second metal member contains Cu of 83.00 mass% or more and 94.00 mass% or less. In a cross section perpendicular to a welding line 2, a junction width ratio (w1/w) is 1.70 or more and 2.30 or less, and a junction width ratio (w2/w) is 0.60 or more and 1.15 or less, where w1 is a first junction width of the junction in a first surface 31 of the junction, w2 is a second junction width of the junction in a second surface 32 of the junction opposed to the first surface, and w is a thickness-intermediary portion junction width of the junction in a thickness-intermediary portion 33 located between the first surface and the second surface.SELECTED DRAWING: Figure 2 【課題】接合部の曲げ性に優れ、接合部表面からのバリの発生を抑制し、温度変化に対する抵抗値変化率を減少した抵抗器用部材、抵抗器用部材の製造方法、および抵抗器を提供する。【解決手段】第１金属部材１０と第２金属部材２０とが接合部３０を介して接合されてなる抵抗器用部材であって、前記第１金属部材は、Ｃｕを９９．９６質量％以上含有し、前記第２金属部材は、Ｃｕを８３．００質量％以上９４．００質量％以下含有し、溶接線２に垂直な断面において、前記接合部の第１表面３１における前記接合部の第１接合幅をｗ１とし、前記第１表面に対向する前記接合部の第２表面３２における前記接合部の第２接合幅をｗ２とし、前記第１表面と前記第２表面との中間に位置する厚さ中間部３３における前記接合部の厚さ中間部接合幅をｗとすると、接合幅比（ｗ１／ｗ）は１．７０以上２．３０以下、かつ、接合幅比（ｗ２／ｗ）は０．６０以上１．１５以下である。【選択図】図２