技术文章

散热器中的热阻是什么?如何阅读相关规格参数?
散热器中的热阻是什么?如何阅读相关规格参数?

热阻,以°C/W为单位,量化了散热器将热量从元件传递到环境空气的能力;数值越低表示性能越好。要读懂规格书,您必须将热阻值与您的功耗和最大允许结温相匹配,以计算所需的风量。对于在40°C环境温度下耗散50W热量的CPU,采用1.0°C/W热阻的散热器,其外壳温度将达到90°C,这对大多数硅结来说是安全的。散热器中的热阻(...

如何设计金属冲压零件:10条规则
如何设计金属冲压零件:10条规则

为金属冲压进行设计,需要从减材或增材思维转变为材料在高速下被位移和成形的工艺。直接的回答是,您必须遵循10条特定的几何规则,以确保您的零件可制造、经济高效且耐用:保持均匀的壁厚、避免过小的圆角半径、为冲孔设计合适的孔径、设计弯曲止裂槽、尊重最小特征间距、避免无拔模斜度的深拉深、使用标准公差、将特征保持在同一侧、为套排下...

如何设计压缩弹簧:分步指南
如何设计压缩弹簧:分步指南

压缩弹簧的设计是一个确定性的工程过程:您定义载荷和挠度要求,选择材料,计算线径和线圈几何形状,验证应力和屈曲,并最终确定可制造性的公差。核心公式是弹簧刚度(k = Gd^4 / 8D³N),它关联了材料剪切模量(G)、线径(d)、线圈平均直径(D)和有效圈数(N)。本指南提供了精确的逐步操作流程,并附有真实数值,以帮助...

金属冲压的最低订购量是多少?MOQ详解
金属冲压的最低订购量是多少?MOQ详解

金属冲压的最低订购量(MOQ)通常为连续模生产的500至5,000件,但使用简化模具进行原型或小批量冲压时,最低可低至100件。对于大批量连续冲压,MOQ通常超过每年50,000件,以分摊模具成本。您的实际MOQ取决于零件复杂度、材料厚度、冲压方式,以及您使用的是现有模具还是新定制模具。冲压方式如何影响MOQ?您选择的...

钣金成型与设计的实际限制是什么?
钣金成型与设计的实际限制是什么?

钣金成形极限由材料在断裂前的最大应变决定,通常通过成形极限图(FLD)来量化。实际设计约束包括:大多数钢材的最小弯曲半径为1.5T,浅拉深的最大拉深深度为零件宽度的0.5至0.7倍。对于1.0毫米厚的冷轧钢(SPCC),安全弯曲应变极限约为33%的延伸率,这意味着最小内弯曲半径为1.5毫米以防止开裂。除了材料极限之外,...


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