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BQUQ 压铸铝散热器 – 精密CNC精加工,无起订量

本压铸铝散热器为通过高压压铸工艺生产的近净成形铝制本体,随后在我们的三轴和四轴CNC加工中心上进行精加工。我们可实现每100 mm 0.05 mm的平面度、加工面Ra 1.6的表面粗糙度,以及标准合金10个工作日的交期。我们在东莞拥有20年的精密制造经验,每件产品均在中国制造,且无起订量要求。 我们如何控制安装面的平面度 安装面是散热器与您的IGBT、MOSFET或CPU封装之间的关键界


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本压铸铝散热器为通过高压压铸工艺生产的近净成形铝制本体,随后在我们的三轴和四轴CNC加工中心上进行精加工。我们可实现每100 mm 0.05 mm的平面度、加工面Ra 1.6的表面粗糙度,以及标准合金10个工作日的交期。我们在东莞拥有20年的精密制造经验,每件产品均在中国制造,且无起订量要求。

我们如何控制安装面的平面度

安装面是散热器与您的IGBT、MOSFET或CPU封装之间的关键界面。我们使用带刮光刀片的100 mm面铣刀一次走刀铣削此面,实现每100 mm 0.05 mm的平面度。如需更高精度,我们可磨削至每100 mm 0.02 mm。我们使用花岗岩平板和千分表组测量平面度,而非目视检查。

压铸合金选项及导热系数

我们备有三种压铸合金:ADC12(A383)用于一般用途,A380具有更好的耐腐蚀性,A356适用于要求更高延展性的应用。导热系数范围从ADC12的96 W/m·K到A356经T6处理后的159 W/m·K。如果您需要最大散热性能,我们推荐A356-T6,其在时效处理后硬度可达90–100 HB。

压铸后CNC加工:我们加工的内容及原因

压铸赋予您形状,但CNC加工赋予您精度。我们加工所有密封面、安装孔和散热鳍片顶端。孔位公差保持在±0.02 mm,我们使用第四轴钻孔侧孔,无需重新装夹。对于鳍片阵列,我们使用带0.1 mm圆角的3 mm立铣刀,以防止应力集中。此步骤减少了您的装配时间,因为您无需再铰孔或去毛刺。

鳍片几何形状:厚度、间距和高度限制

我们的压铸工艺可生产薄至1.2 mm、间距4 mm的鳍片。最大鳍片高度为60 mm,高厚比(高度与厚度之比)最大为50:1。鳍片拔模斜度为0.5度,便于脱模。如果您需要更薄的鳍片(0.8 mm),我们会切换至半固态压铸工艺,但这需要定制模具和更长的交期。对于标准模具,我们保持整个阵列的鳍片厚度偏差在0.1 mm以内。

参数数值/范围
可用合金ADC12、A380、A356
导热系数96 – 159 W/m·K(取决于合金和热处理)
硬度(铸态)80 – 90 HB(ADC12),90 – 100 HB(A356-T6)
安装面平面度每100 mm 0.05 mm(铣削);每100 mm 0.02 mm(磨削)
孔位公差±0.02 mm
表面粗糙度(加工面)Ra 1.6 µm标准,Ra 0.8 µm可选
鳍片厚度最小1.2 mm(标准压铸)
最大鳍片高度60 mm
交期标准合金10个工作日,A356-T6为15天
起订量无起订量 – 1件至100,000件

防腐和电气绝缘的表面处理选项

裸铝会氧化,从而随时间推移降低热性能。我们提供三种标准表面处理:透明阳极氧化(5–10 µm)用于耐腐蚀,黑色阳极氧化(10–15 µm)用于提高发射率(0.85),以及铬酸盐转化膜用于电气接地应用。如果您需要介电涂层,我们可以施加25 µm环氧树脂层,击穿电压为2 kV。所有处理均在我们工厂5公里范围内的合作设施中完成。

每次发货前的检验:三坐标测量机和泄漏测试

我们对所有关键尺寸经CNC加工的散热器进行100%检验。三坐标测量机(CMM)按抽样基准(AQL 0.65)检查孔位和平面度。对于液冷散热器,我们对每件产品进行0.6 MPa气密泄漏测试。我们还使用轮廓仪测量表面粗糙度,并将数值记录在您的检验报告中。您将收到一份包含实际测量值的PDF报告,而非仅通过/不通过的盖章。

你们有最小起订量吗?

无起订量。我们接受从1件原型到100,000件量产件的订单,原型交期为7天。

你们可以定制鳍片图案或安装孔吗?

可以,我们可以修改鳍片高度、厚度和孔位图案,但更改可能需要新模具或CNC程序;我们会在24小时内提供模具修改报价。

你们如何控制大批量订单的质量?

我们对所有CNC加工特征使用过程SPC控制,外加对5%零件进行最终CMM检查,并对表面缺陷进行100%目视检验。

定制压铸散热器的交期是多久?

标准合金(ADC12)新模具为25天;A356-T6含热处理为30天,包括模具制造和首件检验。

如需在我们的散热器上获得最佳切削效果,请参阅我们的CNC切削刀具选择指南。如果您对安装面指定严格公差,请阅读我们的CNC加工公差指南,以了解我们能稳定保持的公差范围。

请发送您的图纸,我们将在12小时内提供正式报价。发送邮件至sc@bquq.com或通过WhatsApp联系+86 13713157787。我们将回复DFM反馈、单价和确认交期——无需起订量。


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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