| 舒良,刘志英.均热板用紫铜带箔材制备[J].有色金属材料与工程,2026,47(3):7-11. |
| 均热板用紫铜带箔材制备 |
| Preparation of copper strip and foil for soaking plate |
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| DOI：10.13258/j.cnki.nmme.20260629001 |
| 中文关键词: 均热板 紫铜带箔材 连续挤压 高温烧结 气密性 |
| 英文关键词:soaking plate copper strip and foil continuous extrusion high-temperature sintering airtightness |
| 基金项目:江西省市场监督管理局科技项目（GSJK202315）；鹰潭市“鹰才计划”科技创新人才资助项目（20244-380093） |
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| 中文摘要: |
| 面向5G通信、高性能计算、电动汽车等高功率散热领域对均热板核心材料的严苛需求，常规工艺制备的紫铜带箔材因高温烧结后存在晶粒异常长大、起泡及气密性差等问题，难以满足均热板真空封装与长期热循环服役要求。本文介绍了一种上引连铸+连续挤压制备均热板用紫铜带箔材的工艺方法以A级阴极铜为原料，经上引连铸（1150 ℃，木炭覆盖还原性气氛）、连续挤压（4.5 r/min）、双面铣面、多道次精密冷轧（粗轧压下量78%）、380 ℃罩式炉退火及600 ℃气垫炉短时快速退火等工序，可稳定制备出氧含量≤4×10-6、平均晶粒度≤0.010 mm、导电率≥100 %IACS的紫铜带箔材。该材料经850 ℃、2 h高温烧结后无起泡、无漏气、无变形，平均晶粒度≤0.050 mm，无晶粒异常长大及晶界裂纹等缺陷，综合性能满足均热板服役要求，为高端散热铜材的制备提供了可靠技术参考。 |
| 英文摘要: |
| Facing the stringent demands for core materials of soaking plates in high-power heat dissipation fields such as 5G communication, high-performance computing, and electric vehicles, conventional processes for preparing copper strip and foil materials cannot meet the requirements for soaking plates. This article elaborates on the reasons why conventional copper strip and foil materials are not suitable for soaking plate applications and introduces a process for preparing copper strip and foil materials for soaking plates using up-cast continuous casting and continuous extrusion. The raw material is Grade A cathode copper, which, after up-cast continuous casting, continuous extrusion, double-sided milling, multi-pass precision cold rolling, segmented annealing in a bell furnace and an air cushion furnace, and online cleaning, can stably produce copper strip and foil materials with oxygen content ≤4×10-6, average grain size ≤0.010 mm, and conductivity ≥100 %IACS. After high-temperature sintering at 850 °C, the copper strip and foil materials exhibit no blistering, no air leakage, and no deformation, meeting the requirements for vacuum packaging and long-term thermal cycling service of soaking plates. |
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