Cold spray process additive manufacturing of heat transfer features in liquid cooled computer components

液冷计算机组件传热特性的冷喷涂工艺增材制造

• 批准号: 500308-2016
• 负责人: Jodoin, Bertrand
• 金额: $ 0.73万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=654700
• 关键词: Cold; spray; process; additive; manufacturing

The latest generation of computer components requires high performance cooling systems due to increased power consumption and hardware packaging size restrictions. The use of liquid based cooling (LBC) systems for thermal management of computer components has demonstrated significant promise for improved thermal performance in comparison to traditional air cooling techniques. Despite this potential, the technology remains within the confines of a niche industry, and as such most existing LBC systems are poorly optimized for thermal performance. IEIis currently developing a LBC system for video cards and graphics processing units (GPUs). The proposed project aims to use Cold Gas Dynamic Spraying (CGDS) as a novel additive manufacturing (AM) process for the production of high performance heat transfer features to be used in those high performance LBC systems. Previous work has already demonstrated the feasibility of this approach. However, these studies have also highlighted certain key challenges when considering CGDS as an AM technique in a high volume production setting. In particular, costs associated to raw material waste (powder material) can be high and issues related to process reliability/repeatability (due to undesirable material buildup on components of the CGDS pin fin fabrication fixture) are often present. These fundamental engineering issues can significantly hinder the economic viability of the technique, and as such they are the focus of the current proposed project. The successful resolution of these issues would be instrumental in demonstrating the reliability and economic feasibility of the CGDS process as an AM technique in a high volume production setting for GPUs. This could have enormous benefits to Canadian industries as it could introduce CGDS as a new viable and cost-effective AM technique, which could in turn open up a broad range of new possibilities beyond the specific application targeted in this proposal.**

由于功耗增加和硬件封装尺寸限制，最新一代计算机组件需要高性能冷却系统。 与传统空气冷却技术相比，使用液基冷却 (LBC) 系统进行计算机组件的热管理已证明其具有改善热性能的巨大前景。 尽管有这种潜力，但该技术仍然局限于利基行业，因此大多数现有的 LBC 系统在热性能方面的优化很差。 IEI 目前正在开发用于视频卡和图形处理单元 (GPU) 的 LBC 系统。 拟议项目旨在使用冷气动态喷涂 (CGDS) 作为一种新型增材制造 (AM) 工艺，用于生产用于高性能 LBC 系统的高性能传热功能。 之前的工作已经证明了这种方法的可行性。然而，这些研究也强调了在大批量生产环境中将 CGDS 视为增材制造技术时面临的某些关键挑战。 特别是，与原材料浪费（粉末材料）相关的成本可能很高，并且经常存在与工艺可靠性/可重复性相关的问题（由于 CGDS 针翅制造夹具的组件上出现不良材料堆积）。 这些基本的工程问题可能会严重阻碍该技术的经济可行性，因此它们是当前拟议项目的重点。 这些问题的成功解决将有助于证明 CGDS 工艺作为增材制造技术在 GPU 大批量生产环境中的可靠性和经济可行性。 这可能会给加拿大工业带来巨大的好处，因为它可以引入 CGDS 作为一种新的可行且具有成本效益的增材制造技术，这反过来又可以在本提案中针对的具体应用之外开辟广泛的新可能性。 **