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Vol.007 - Cold Plate Performance Is Not Just About Flow Paths: The Joining Process Matters

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  Precision Joining: Choosing Between Friction Stir Welding and Vacuum Brazing 1. Introduction: How Joining Processes Affect Liquid Cooling Performance and Reliability This issue takes a closer look at how the joining process determines the final quality of a product. In liquid cooling systems, the air-tightness and liquid-tightness of a cold plate are core indicators of long-term system stability, and weld quality directly affects heat transfer efficiency and product lifetime. Common joining methods for liquid cold plates include: ·        Friction Stir Welding (FSW) ·        Vacuum Brazing ·        TIG/MIG Welding ·        Diffusion Bonding ·        Laser Welding This article focuses on the two most widely used solutions in high-performance server cold plates today: Friction Stir Welding (FSW) and Vacuum Brazing. I...

達鉅 創伴電子報 Vol.007 - 水冷板焊接怎麼選?從結構強度到量產可靠度一次看懂

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  精準焊接:摩擦攪拌焊 與 真空釺焊的選擇 一、前言:焊接工藝對液冷效能與可靠度的影響 本期將進一步分析「焊接工藝」如何決定產品的最終品質。在液冷系統中, 水冷板的 氣密與液密性 是系統長期穩定運作的 核心指標 ,而 焊接品質 直接影響熱傳導效率與產品壽命。 常見的液冷板焊接方式包含: ●       摩擦攪拌焊 (Friction Stir Welding, FSW) ●       真空釺焊 (Vacuum Brazing) ●       氬焊 (TIG/MIG) ●       擴散焊 (Diffusion Bonding) ●       雷射焊接 (Laser Welding) 本篇將聚焦於目前高效能伺服器水冷板中最主流的兩種方案: 摩擦攪拌焊 (FSW) 與 真空釺焊 (Vacuum Brazing) ,探討兩者在結構強度、設計自由度及量產可靠度上的差異。 二、工藝技術說明 1. 摩擦攪拌焊 (Friction Stir Welding, FSW) FSW 是一種固態焊接技術,利用高速旋轉的攪拌針與金屬摩擦產生熱量,使材料達到塑性狀態後進行擠壓與結合。 ●       無熔融狀態: 避免了傳統熔焊產生的氣孔與裂紋風險。 ●       結構強度高: 焊縫組織細密,機械性能優異。 ●       低熱變形: 對工件的熱影響區小,尺寸穩定性佳。 ●       環保優勢: 無需添加填充金屬,製程節能環保。     2. 真空釺焊 (Vacuum Brazing) 真空釺焊是在真空環境下加熱,利用熔點較低的釺料熔化後,透過毛細現象填充於基材間隙完成結合。 ●  ...