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BQUQ 铝制散热器 | 精密CNC加工,中国制造

这款散热器的功能及关键数据 这是一款CNC加工铝制散热器,适用于电力电子、LED模块和IGBT的有源或无源冷却。我们确保基座平整度为0.05 mm,表面粗糙度Ra 0.4,翅片厚度最低1.2 mm,交期15天。材料为6063-T5,硬度80 HB,导热系数201 W/m·K——在典型强制风冷外壳中,可将结温降低35%,此数据已在我们自有测试台上验证。 我们如何加工翅片而不产生弯曲或撕裂


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这款散热器的功能及关键数据

这是一款CNC加工铝制散热器,适用于电力电子、LED模块和IGBT的有源或无源冷却。我们确保基座平整度为0.05 mm,表面粗糙度Ra 0.4,翅片厚度最低1.2 mm,交期15天。材料为6063-T5,硬度80 HB,导热系数201 W/m·K——在典型强制风冷外壳中,可将结温降低35%,此数据已在我们自有测试台上验证。

我们如何加工翅片而不产生弯曲或撕裂

翅片是薄弱环节。薄壁容易振动、偏斜和撕裂。我们使用4刃硬质合金立铣刀,以12,000 RPM转速和0.3 mm径向切削深度进行加工。这可将切削力控制在90 N以下,确保翅片保持笔直。主轴跳动控制在2微米以内。结果:翅片间距公差±0.05 mm,翅片高度公差±0.1 mm,翅片尖端无毛刺。任何翅片弯曲的零件都会被拒收——不值得发运给您。

对于深翅片通道(超过30 mm),我们采用摆线刀具路径。这减少了刀具尖端的积热,防止加工硬化。如果您的设计有40 mm高的翅片,我们并非猜测——我们已实际加工过。发送您的图纸,我们将告知确切的加工周期。

我们使用的材料及热处理(不仅仅是6063)

标准材料为6063-T5,因其挤压性和耐腐蚀性。但您不受限于此。我们也加工6061-T6(更硬,95 HB,适合攻丝孔)、5052(适合折弯)和7075-T6(用于承受振动的结构翅片)。所有坯料均附带轧制厂证书——每批货物均包含MTC。我们不从不明确来源购买废挤压棒材。

CNC加工后,如指定要求,我们会进行热处理:6061采用T6处理(530°C固溶退火,175°C时效8小时)。这使屈服强度达到276 MPa。对于阳极氧化,我们使用硫酸II型,厚度18-20微米,并做封孔处理。除非您要求,否则不发货裸铝件。

我们可保持的翅片密度和几何极限

想要更多翅片密度?我们可在20 mm高的型材上切割9翅片/英寸(3.0 mm间距)。最小翅片厚度为1.2 mm,最大翅片高度为50 mm(高厚比2:1,而非3:1——我们如实说明极限)。基座厚度最小为2.5 mm。如果您需要阶梯基座或带螺纹孔的安装凸台,我们可在一次装夹中完成加工,无需二次工序。

我们不焊接翅片。焊接会产生热阻。我们从实心坯料或您提供的挤压型材进行加工。对于原型,实心坯料更快。对于批量生产,我们可采用混合方案:挤压基座+机加工翅片。但对于90%的订单,实心坯料是正确选择——您可获得均匀的晶粒流向,无气孔。

针对热界面材料(TIM)的表面光洁度和平整度

基座平整度对导热硅脂或相变垫片至关重要。我们确保整个基座平整度为0.05 mm。在接触区域(IGBT安装处),我们可做到更严:50 mm x 50 mm范围内0.02 mm。表面粗糙度Ra 0.4为标准。如果您使用石墨垫片,我们建议Ra 0.8以获得更好的润湿性——我们不强行推荐镜面抛光,因为那并非总是更好。我们使用花岗岩平板和千分表测量平整度,而非目测。

每次发货前的检验(以及我们测量的项目)

每个散热器都经过首件检验(FAI),使用三坐标测量机(CMM)检测关键尺寸。对于每个生产批次,我们检查:翅片高度(卡尺)、翅片间距(节距规)、基座平整度(花岗岩平板上的千分表)、表面粗糙度(轮廓仪)和阳极氧化厚度(涡流)。我们还进行100%目视检查,检查划痕和弯曲翅片。每箱均附合格证书。如果您有特定的PPAP要求,我们可满足——我们为汽车和医疗客户提供完整文档。

规格数值
材料6063-T5、6061-T6、5052、7075-T6(提供MTC)
标准尺寸范围基座20 x 20 mm至600 x 600 mm
翅片厚度最小1.2 mm(标准),特殊刀具可达0.8 mm
翅片高度最大50 mm(实心坯料)
翅片间距标准3.0 mm(9 FPI),可按要求2.5 mm
硬度(6063-T5)80 HB(加工态)
硬度(6061-T6)95 HB(热处理后)
尺寸公差±0.05 mm(翅片间距),±0.1 mm(翅片高度)
基座平整度整体0.05 mm,IGBT接触区域0.02 mm
表面粗糙度(加工态)Ra 0.4 µm(标准),TIM垫片用Ra 0.8 µm
主轴跳动≤2 µm(保证翅片笔直度)
阳极氧化II型,18-20 µm,黑色或本色
交期原型15天,批量生产20天(100件以上)
最小起订量无MOQ——1件原型即可

为何我们不盲目遵循您的图纸(以及何时提出异议)

过去5年中,我们已审阅200多份散热器图纸。有些是为挤压而非加工设计的。如果您的翅片间距为1.0 mm且高度为40 mm,我们会告知这在不断刀的情况下无法加工。相反,我们建议采用两件式设计(基座+翅片组)或更换材料。我们并非为了赢得报价而对一切说“是”。我们的目标是制造出可用的零件。如果您的设计在基座中有用于热电偶的盲孔,我们可以钻削——深度10 mm,直径3 mm,没有问题。但如果是0.5 mm的孔,我们会告知这是一个成本陷阱,并建议采用压入式嵌件。

我们如何包装和运输(确保翅片到货不弯曲)

翅片很脆弱。我们使用带EVA泡沫内衬的硬质瓦楞纸箱,泡沫可托住翅片。每个零件单独用防静电膜包裹。我们不使用松散填充物。对于出口,我们使用5层出口级纸箱。从深圳空运到洛杉矶需5天。海运(上海至鹿特丹)需30天。每个箱子都标注您的采购订单号和条形码。如果您需要特定包装方式(例如可重复使用的周转箱),我们也可提供——但这会增加2天交期。

最小起订量是多少?

无最小起订量。我们以相同的质量体系加工单件原型或10,000件批量生产。

能否匹配竞争对手的特定翅片轮廓?

可以,发送样品或2D/3D图纸。我们将测量翅片厚度、间距和高度,然后在±0.05 mm公差内加工至与您的样品一致。

如何确保大批量生产的质量?

我们对首件进行首件检验,然后每20件进行过程检查(翅片高度和平整度),最后对批次5%进行CMM终检。我们还在包装前对每个散热器拍照。

定制设计的典型交期是多久?

原型(1-5件)为15天,含CNC编程。批量生产(100件以上)为20天。如需更快,我们为简单几何形状提供7天加急服务——发送图纸时请咨询。

在最终确定设计之前,请查阅我们的CNC刀具选择指南,了解刀具几何形状如何影响翅片表面质量。如果您正在设定公差,我们的CNC加工公差指南将帮助您避免过度指定公差而支付过高成本。

12小时内获得明确报价。将您的图纸(STEP、IGES或PDF)发送至sc@bquq.com或WhatsApp +86 13713157787。我们将回复价格、DFM(可制造性设计)评审和交期。无任何义务。这是BQUQ的精密制造——我们自2004年起在东莞从事此行业。


相关产品

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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