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黑色阳极氧化铝散热器系列 | BQUQ精密CNC加工

这是来自BQUQ的黑色阳极氧化铝散热器系列,BQUQ是中国东莞一家拥有20年精密制造经验的工厂。您将获得CNC加工的散热器,尺寸公差为±0.01 mm,表面光洁度为8 Ra,原型标准交期为5天。阳极氧化层厚度为18–25微米,硬度最低为300 HV(相当于涂层标尺上的30 HRC)。 为什么我们的阳极氧化层不仅仅是装饰 铝材上的黑色阳极氧化具有三大作用:更好地辐射热量、抵抗腐蚀、保护零件免受刮擦


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这是来自BQUQ的黑色阳极氧化铝散热器系列,BQUQ是中国东莞一家拥有20年精密制造经验的工厂。您将获得CNC加工的散热器,尺寸公差为±0.01 mm,表面光洁度为8 Ra,原型标准交期为5天。阳极氧化层厚度为18–25微米,硬度最低为300 HV(相当于涂层标尺上的30 HRC)。

为什么我们的阳极氧化层不仅仅是装饰

铝材上的黑色阳极氧化具有三大作用:更好地辐射热量、抵抗腐蚀、保护零件免受刮擦。我们的II型硫酸阳极氧化产生18–25微米的致密氧化层。该层与铝基体融为一体,不是会脱落的油漆。热发射率从0.05(裸铝)提高到0.88(黑色阳极氧化)。如果您需要更高的耐磨性,我们还提供III型硬质阳极氧化,厚度为40–50微米,硬度为400+ HV。这两种选项都包含在本系列中。

对热界面至关重要的CNC加工公差

散热器底座的平面度决定了其与IGBT、CPU或激光二极管的接触效果。我们的CNC加工中心在100 mm长度上将底座平面度控制在0.02 mm以内。这不是营销数字——我们使用花岗岩平板和千分表进行测量。翅片厚度公差为±0.05 mm,孔位公差为±0.01 mm。如果您将此散热器与功率模块配合使用,平面度直接影响热阻。0.05 mm的气隙可使热阻增加20–30%。我们消除了这一间隙。有关我们如何实现这一点的更多信息,请参阅我们的CNC加工在散热器生产中的优势

我们常备的即时加工材料

我们常备6061-T6和6063-T5铝材,尺寸从50×50 mm到400×400 mm。6061-T6的屈服强度为276 MPa,适用于安装支架和结构翅片。6063-T5较软,但导热性更好(201 W/m·K,而6061为167 W/m·K)。对于大功率LED或激光应用,我们还常备1050A(导热系数229 W/m·K),但其可加工性较差。请告知您的功率和风量,我们将推荐合适的合金。每批货物均附带材料证书。

翅片几何形状:我们能切割的深度和厚度

我们的三轴和四轴CNC铣床可切割薄至1.0 mm的翅片,深宽比达10:1。这意味着1 mm的翅片可以高达10 mm。对于更高的翅片(最高80 mm),我们采用5:1的比率,最小翅片厚度为2 mm。翅片之间的间隙可小至1.5 mm。这些数字来自我们的实际刀具库——我们使用0.5 mm圆角半径的硬质合金立铣刀和高压冷却液来排屑。如果您需要针翅阵列,我们可以加工2×2 mm至8×8 mm的方形针。限制不在于我们的机器,而在于您的热需求。我们还可以根据结构载荷加工3 mm至40 mm的底座厚度。

每批发货前的检验:不仅仅是抽检

本系列中的每个散热器均经过100%检验,而非抽样检验。我们使用分辨率为0.001 mm的三坐标测量机(CMM)验证关键尺寸。平面度使用激光干涉仪检查。阳极氧化厚度使用涡流测厚仪在每个零件的三个点进行验证。我们还对阳极氧化表面进行10倍放大目视检查,以发现划痕或凹坑。无论您购买一件还是一千件,每份订单都会附带尺寸检验报告。这是标准流程,不额外收费。

交期和起订量:为原型和小批量生产而设计

无起订量。您可以订购单个原型,我们将为您加工。标准交期为原型5天(最多10件),批量生产15天(100–5000件)。对于紧急需求,我们提供72小时加急服务,适用于使用现有刀具的简单几何形状。我们是一家中型工厂,因此您的订单不会在排队中丢失。我们实行两班制,拥有20台CNC机床和自有精加工线——阳极氧化和冲压均不外协。正是这种垂直整合使我们能够保证交期。

表面光洁度和外观质量

CNC加工后,我们手动去除每个边缘的毛刺——不留任何尖角,以免划伤或磨损电线。阳极氧化表面为均匀的哑光黑色,光泽度为30–35%(根据ASTM D523)。如果您需要裸露铝材用于电气接地或导热膏涂覆,我们会遮蔽安装表面。标准Ra为底座0.8微米,翅片1.6微米。如果您需要镜面光洁度用于密封表面,我们可以在阳极氧化前抛光至0.4 Ra。在外观方面,我们使用定制夹具从底部或侧面固定零件,避免产生挂架痕迹。

我们可以提供的热性能数据

我们不会猜测热性能。我们可以根据您的风量和功耗进行CFD仿真,并给出预测的结温。为了验证,我们拥有热测试台,热源功率高达500W,底座和翅片尖端均布置热电偶。如果您已有热模型,请发送给我们,我们将按照您的几何形状进行加工。作为参考,典型的100×100×40 mm黑色阳极氧化散热器,10片翅片,厚度2 mm,在自然对流条件下的热阻为0.8°C/W。采用针翅设计可将其改善15%。需要更多热管理细节?请阅读我们的CNC加工LED散热器热管理指南。

规格数值
材料6061-T6、6063-T5、1050A铝材
尺寸范围底座20×20 mm至400×400 mm
翅片厚度(最小)1.0 mm(10:1深宽比)
翅片间隙(最小)1.5 mm
底座平面度100 mm长度内0.02 mm
尺寸公差±0.01 mm(孔、槽)
表面光洁度(Ra)底座0.8 µm,翅片1.6 µm
阳极氧化厚度18–25 µm(II型),40–50 µm(III型)
涂层硬度300 HV最低(II型),400 HV(III型)
热发射率0.88(黑色阳极氧化)
交期(原型)5天(最多10件)
交期(批量生产)15天(100–5000件)
起订量无起订量
检验100% CMM、平面度、阳极氧化厚度

如何指定您的散热器以获得快速报价

要在一天内获得准确报价,请将STEP或IGES文件以及三个参数发送给我们:总功耗(瓦)、允许的最高底座温度(°C)和可用风量(m/s或CFM)。如果您没有CAD文件,请发送带有关键尺寸的手绘草图。我们将推荐翅片几何形状和材料。如果您有性能不佳的现有设计,也请发送给我们——我们会告诉您问题出在平面度、表面光洁度还是材料选择上。此工程评审不收取费用。有关公差的更多背景信息,请查看我们的CNC切削刀具选择指南CNC加工公差指南

包装和运输:运输途中无损坏

阳极氧化表面容易刮伤,因此我们将每个散热器单独用防静电泡沫包裹。对于批量订单,我们使用定制瓦楞纸箱,配以模切泡沫内衬,每个零件都有独立腔体。小批量订单通过DHL、FedEx或UPS发货(2–3天送达美国和欧洲)。大批量订单使用海运,配以出口级木箱。每个包裹都包含检验报告和材料证书。过去12个月,我们已发货至30多个国家,零运输损坏索赔。

最小起订量是多少?

没有起订量——无论是单个原型还是10,000件批量,我们都以同样的公差和检验标准进行加工。

您能否根据我的特定热负载定制翅片几何形状?

可以,我们会根据您的功率和风量调整翅片厚度、高度、间距和底座厚度,并可在加工前运行CFD仿真进行验证。

您如何保证阳极氧化涂层的质量?

我们使用涡流测厚仪在每个零件的三个点测量涂层厚度,并根据ASTM B136标准通过染料染色测试验证封孔质量。

如果需要加急订单,典型交期是多久?

对于使用现有刀具的简单几何形状,我们可在72小时内交货;对于定制设计,适用标准的5天原型交期。

请将您的图纸发送给我们,12小时内即可获得确定报价。发送邮件至sc@bquq.com或通过WhatsApp联系+86 13713157787。我们将回复价格、交期,如果发现可以在不影响热性能的情况下降低成本的方法,还会附上DFM(面向制造的设计)建议。这就是BQUQ的黑色阳极氧化铝散热器系列——精密制造,中国制造,无起订量,检验标准不打折扣。


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参数

参数能力
材料AL6063/6061/5052,纯铜C1100,铜铝复合
工艺挤压、CNC加工、铲齿、锻造、压铸、冲压翅片
翅片类型挤压翅片、针翅、铲齿翅片、折叠翅片、粘合翅片、热管、均温板
表面处理黑色阳极氧化、本色阳极氧化、镀镍、粉末喷涂
尺寸范围最大1500 x 400 x 300 mm
热测试每批次提供热阻和散热数据
打样5-7天,样品无最小起订量
检验三坐标测量仪、热阻测试仪,每批次提供完整报告

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