技术文章

气流方向如何影响散热器性能?
气流方向如何影响散热器性能?

气流方向是决定散热器热阻的最关键外部因素,与垂直或受阻气流相比,方向正确的气流可将结到环境的热阻(RθJA)降低30%至55%。对于底座热阻为0.2 K/W的典型挤压铝散热器而言,在100W功耗下,这意味着外壳温度可降低15°C至25°C。基本原则很简单:空气必须沿着鳍片长度方向流动,而非横穿鳍片,且压降必须与可用风扇...

弹簧端面磨削的关键技术与规格有哪些?
弹簧端面磨削的关键技术与规格有哪些?

弹簧端面磨削是将压缩弹簧的端圈磨平并磨方,以确保其垂直度、载荷精度以及在压缩状态下稳定坐落的工艺。主要规格要求是磨削后的端面平面度达到0.1毫米至0.25毫米,垂直度(垂直度)达到1至3度,具体取决于弹簧指数和线径。对于大多数精密应用,磨削表面的表面粗糙度预期为Ra 0.8至1.6微米,磨削后自由长度的生产公差控制在±...

什么是冲压润滑,你应该使用哪种油?
什么是冲压润滑,你应该使用哪种油?

冲压润滑是在冲压操作之前或期间,将专门配制的油或流体施加到金属板材和模具上,以控制摩擦、减少热量并防止拉伤或模具磨损。正确的油品选择取决于材料厚度、冲压速度和变形程度,但对于大多数厚度不超过 3 毫米的低碳钢应用,建议使用粘度在 40°C 下为 100-220 cSt 的氯化或硫化重型冲压油。对于铝和不锈钢,应使用低粘...

精密加工案例研究揭示了医疗器械制造的哪些内幕?
精密加工案例研究揭示了医疗器械制造的哪些内幕?

精密医疗器械加工对关键特征要求公差达到±0.005毫米(0.0002英寸),表面光洁度达到Ra 0.4微米或更优,并通过ISO 13485认证。在本案例研究中,我们考察了BQUQ在中国东莞生产的一款钛合金骨科钻套——一种II类外科手术器械。BQUQ拥有20年CNC加工经验。该项目通过五轴CNC铣削、严格的工艺验证和统计...

挤压散热器型材的标准形状与定制选项有哪些?
挤压散热器型材的标准形状与定制选项有哪些?

挤压散热器型材主要分为标准形状——平板、单翅片、双翅片和针翅——以及完全定制几何形状,具体选择取决于热负荷、气流方向和可用空间。标准型材的模具成本较低(500–2,000美元),交期更快(2–3周),而定制型材需要专用模具(1,500–5,000美元),但可通过优化的翅片密度和长宽比将热性能提升15–30%。铝6063...


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