技术文章

如何在散热器设计中计算热阻以确保可靠性能?
如何在散热器设计中计算热阻以确保可靠性能?

直接答案是:用热源与环境空气之间的温差除以耗散功率来计算热阻(Rth = ΔT / P)。对于实际的散热器设计,您必须将结到外壳、外壳到散热器以及散热器到环境空气的各个热阻相加,然后将该总值与允许的最大结温进行比较。此计算决定了您的应用是需要标准挤压铝型材、粘合翅片组件还是液冷冷板。热阻计算的基本公式是什么?任何散热器...

我的弹簧能承受多少次循环?疲劳寿命详解
我的弹簧能承受多少次循环?疲劳寿命详解

弹簧的疲劳寿命并非一个单一数字,而是一个基于材料、应力水平、表面状况和工作环境计算得出的预测值。对于大多数由油淬火铬硅钢丝制成的标准压缩弹簧,其失效前的循环次数预计在10,000到1,000,000次之间,其中100,000次循环是通用工业应用的常见基准。为最大化使用寿命,工程师必须设计最大工作应力低于材料抗拉强度的4...

CNC加工最便宜的材料是什么?
CNC加工最便宜的材料是什么?

CNC加工最便宜的材料是铝6061-T651,原材料成本通常在每公斤2.50至4.00美元之间,简单几何形状的机加工零件总成本起价为每件5.00美元。对于因强度或耐磨性要求而不适合使用铝的应用,冷轧钢(CRS)1018是下一个最经济的选择,每公斤1.20至2.00美元,但与铝相比,加工时间和刀具磨损使总成本增加20-3...

电子设备中散热片与散热器有什么区别?
电子设备中散热片与散热器有什么区别?

散热器是一种被动元件,通过传导和对流将热量从发热设备传递到较冷的流体(通常是空气);而散热排(水冷排)是一种在两个流体(如冷却液和空气)之间传递热量的元件,通常是液体冷却回路的一部分。主要区别在于传热介质:散热器直接作用于空气或单一流体,而散热排需要泵驱动的液体回路才能有效工作。在电子领域,散热器用于单个芯片的局部冷却...

ASTM、SMI与JIS弹簧标准之间的关键区别是什么?
ASTM、SMI与JIS弹簧标准之间的关键区别是什么?

弹簧是精密部件,几微米的偏差就可能改变其承载能力和疲劳寿命。弹簧制造领域最主要的三个参考标准框架是ASTM(美国材料与试验协会)、SMI(弹簧制造商协会)和JIS(日本工业标准)。对于一家服务全球客户的东莞工厂而言,直接的答案是:ASTM定义了材料化学成分和机械性能极限,SMI提供了圆线螺旋压缩弹簧和拉伸弹簧的设计与公...


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