Furukawa-Sky Review No.1 (April 2005)

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Effect of Annealing Conditions of Brazing Sheet on Erosion during Brazing

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  • 福元 敦志
    Atsushi Fukumoto
  • 土公 武宜
    Takeyoshi Doko


Automotive heat exchangers are mainly manufactured by brazing process. Erosion that is a phenomenon whereby core alloy is penetrated by molten filler alloy can occur during brazing. Because the performance of a brazing sheet is degraded when erosion occurs, there is a strong demand for materials research to inhibit erosion. Inhibition of erosion requires that the core alloy be completely recrystallized at the melting temperature of the filler alloy. Although H-temper materials are generally used to inhibit erosion, the formability of the brazing sheet is degraded. In this study, the density of fine precipitates that retard recrystallization of the core alloy is decreased by means of annealing using Continuous Annealing Line (CAL). As a result, the deformation level required to inhibit erosion is decreased, thus improving the formability of brazing sheets.

一般論文 / Articles

  1. 飲料用アルミニウム缶材料の開発
    Development of Aluminum Beverage Can Stocks
  2. Al-Mg-Si合金板材の曲げ加工性に及ぼす粒界組織の影響
    Effects of Microstructural Features of Grain Boundary on the Bendability of Al-Mg-Si Alloy Sheets
  3. Al-Mg合金板の降伏応力異方性に及ぼすミクロ組織と転位セル壁配列の影響
    Effects of Microstructure and Arrangement of Dislocation Cell Walls on the Yield Stress Anisotropy in Al-Mg Alloy Sheets
  4. ろう付加熱時のろう侵食に及ぼすブレージングシートの焼鈍条件の影響
    Effect of Annealing Conditions of Brazing Sheet on Erosion during Brazing
  5. Al-Siろう材合金中のSiサイズによるろう付性の変化
    Change in the Brazeability of Brazing Sheets with Different Si Particle Size in Al-Si Filler Alloy Layer
  6. アルミニウム合金鋳塊におけるバットカール現象のシミュレーション解析
    Numerical Simulation of Butt Curl Phenomena during Aluminum DC Casting

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