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BQUQ背胶散热片 | 精密CNC散热器,中国制造

此背胶散热片是一款CNC加工铝或铜散热器,安装面预贴导热胶带。撕下离型纸,按压即可将功率元件热粘合,无需螺丝、钻孔或导热硅脂。我们工厂的接触面平面度公差为0.02 mm,表面粗糙度为Ra 0.8 µm,翅片阵列最大跳动为0.03 mm——确保热界面薄而均匀。标准尺寸交期为5个工作日;原型产品48小时内从东莞工厂发货。 胶层如何替代螺丝和导热硅脂 我们将0.25 mm厚的导热丙烯酸或硅胶胶带(3M


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此背胶散热片是一款CNC加工铝或铜散热器,安装面预贴导热胶带。撕下离型纸,按压即可将功率元件热粘合,无需螺丝、钻孔或导热硅脂。我们工厂的接触面平面度公差为0.02 mm,表面粗糙度为Ra 0.8 µm,翅片阵列最大跳动为0.03 mm——确保热界面薄而均匀。标准尺寸交期为5个工作日;原型产品48小时内从东莞工厂发货。

胶层如何替代螺丝和导热硅脂

我们将0.25 mm厚的导热丙烯酸或硅胶胶带(3M 8810或同等品)粘合在精密研磨的底座上。胶带导热系数为0.8 W/mK——不如焊料高,但消除了硅脂常留下的气隙。我们的胶带剥离强度为1.2 N/mm,可垂直固定100 g散热片在PCB上而不下垂。对于超过15 W的高热负载,我们建议增加机械夹扣;低于此值,仅胶带即可满足要求。

底座平面度与0.02 mm规则

胶带只有在金属底座真正平整时才能发挥作用。翘曲的底座会产生气穴,而空气是热绝缘体。因此,我们对每个底座进行CNC飞铣,然后在花岗岩平台上手工研磨。我们使用分辨率为0.001 mm的千分表支架检查平面度。如果底座对角线平面度超过0.02 mm,则拒收。这就是能有效散热与看似应该散热却无效的散热片之间的区别。

我们加工的翅片几何形状与气流方向

标准翅片厚度为1.5 mm,间距为4 mm,提供35%的开放面积用于自然对流。对于强制气流,我们可以加工薄至0.8 mm、间距2.5 mm的翅片——但需提醒:更薄的翅片更容易弯曲,因此我们将0.8 mm厚度翅片的高度限制在25 mm。每个翅片相对底座的跳动为0.01 mm,确保整个翅片表面参与热传递。我们不冲压翅片;冲压翅片有毛刺会减少气流。我们使用CNC立铣刀切割。

我们使用的材料与热处理

默认材料为6063-T5铝合金——导热系数201 W/mK,屈服强度130 MPa。对于更高热密度,我们提供C1100铜(385 W/mK),但铜会使重量翻倍、成本增加三倍。我们也备有6061-T6,适用于需要更硬表面(95 HB)且散热片兼作结构支架的应用。所有铝材均为T5或T6状态——绝不退火。我们不对接触面进行阳极氧化;阳极氧化会增加25 µm氧化层,阻碍热传递。如需黑色表面,我们会遮蔽底座,仅对翅片阳极氧化,然后贴上胶带。

胶带选项:丙烯酸与硅胶,适用于不同工作范围

丙烯酸胶带(我们的默认选择)工作范围为-40 °C至+150 °C,价格更低。硅胶胶带工作范围为-60 °C至+230 °C,更适合高振动环境,因为它能吸收更多剪切应力。但硅胶在真空应用中会释气——请勿在未通风的密封外壳中使用。请告知您的最大连续结温,我们将选择合适的胶带。我们备有宽度从10 mm到80 mm的两种胶带,并按您的尺寸精确模切——无悬垂、无回流焊时翘起的裸露边缘。

每次发货前的检验:胶带剥离测试与尺寸报告

每批次均进行90度剥离测试,使用拉力试验机验证最小粘附力为1.2 N/mm。我们还使用三坐标测量机(CMM)测量底座平面度、翅片跳动和总高度,并随每次发货附带数字报告。报告列出所有关键尺寸以及10倍放大下胶带边缘的照片。如果您有带GD&T的图纸,我们按图纸检验。若无图纸,我们使用内部标准——比大多数行业规范更严格。我们保留每批次样品12个月,以防现场失效。

防止胶带污染的包装

胶带面覆盖硅油涂层离型纸,仅在您准备安装时才移除。运输过程中,每个散热片独立放置于防静电塑料托盘,托盘再装入四周有20 mm泡沫的瓦楞纸箱。我们见过廉价散热片到货时胶带嵌入灰尘——这会破坏热性能。我们的产品胶带受保护,并附赠无绒擦拭布用于安装前清洁元件表面。无塑料粉尘、无纸纤维、无指纹。

规格数值备注
底座材料6063-T5 / 6061-T6 / C1100铜默认铝,铜需定制
底座平面度≤ 0.02 mm按100 mm对角线测量
表面粗糙度(底座)Ra 0.8 µm飞铣+研磨
翅片跳动≤ 0.03 mm相对底座平面
翅片厚度0.8 – 3.0 mmCNC铣削,无冲压毛刺
翅片间距2.5 – 6.0 mm按气流要求定制
总高度5 – 60 mm含底座和胶带
胶带3M 8810 / 硅胶90880.25 mm厚,0.8 W/mK
胶带剥离强度1.2 N/mm90度拉力测试,每批次
温度范围-40 °C至+150 °C(丙烯酸)硅胶可达+230 °C
交期5个工作日(标准)48小时原型加急
起订量无起订量接受1件测试

是否有最小起订量?

无起订量。我们以相同单价发货一个原型或一千件,前100件单价一致;500件起享批量折扣。

能否匹配我的PCB外形和孔位?

可以,我们根据您的2D图纸或3D STEP文件加工任何定制外形,并可增加第二个胶垫用于多元件安装。

如何验证胶带确实粘附?

我们对每批次样品进行90度剥离测试,仅当剥离力在300 mm/min拉伸速度下超过1.2 N/mm时才接受。

最快多久能拿到定制背胶散热片?

对于标准铝尺寸且无特殊胶带,图纸确认后48小时内发货;铜或复杂翅片几何形状,预计5个工作日。

请发送您的图纸,注明尺寸、热负载(瓦)和环境温度——我们将在12小时内确认正确的翅片面积和胶带。如需正式报价,请发送邮件至sc@bquq.com或WhatsApp +86 13713157787。我们是位于中国东莞的精密制造工厂,拥有20年CNC加工、冲压和弹簧经验。如果您在比较刀具选项,请阅读我们的CNC刀具选择指南,了解我们为何使用特定立铣刀切割翅片。如果您对我们的0.02 mm平面度声明有疑虑,我们的CNC加工公差指南详细解释了如何在每个零件上保持这些数值。无推诿、无隐藏成本——只需一款数秒安装、多年散热的散热片。


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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