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冲压锯齿形散热器 | BQUQ 中国精密制造

这是由BQUQ生产的冲压锯齿形散热器,BQUQ是一家位于中国东莞、拥有20年经验的精密制造工厂。我们结合级进模冲压与可选CNC精加工,为您提供平面度保持在0.05毫米以内、表面光洁度达到Ra 0.8 µm、基材硬度保持45 HRC的冷却部件。标准尺寸交期为7天,我们全球发货,无最小起订量。 您将获得一款在紧凑占用空间内最大化表面积的散热器。与平面冲压翅片相比,锯齿形几何结构可将对流换热效率提高多


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这是由BQUQ生产的冲压锯齿形散热器,BQUQ是一家位于中国东莞、拥有20年经验的精密制造工厂。我们结合级进模冲压与可选CNC精加工,为您提供平面度保持在0.05毫米以内、表面光洁度达到Ra 0.8 µm、基材硬度保持45 HRC的冷却部件。标准尺寸交期为7天,我们全球发货,无最小起订量。

您将获得一款在紧凑占用空间内最大化表面积的散热器。与平面冲压翅片相比,锯齿形几何结构可将对流换热效率提高多达30%。每个零件均采用经认证的铝或铜带材生产,并在包装前进行去毛刺和检验。

锯齿形几何结构,每平方英寸容纳更多冷却表面

冲压锯齿形图案形成重复折叠,在不增加安装占用空间的情况下倍增有效冷却面积。对于50毫米x 50毫米的基座,锯齿形翅片结构可提供120毫米的线性冷却边缘。这是相同尺寸平板的2.4倍表面积。气流自然通过通道,与同等高度的针翅阵列相比,强制对流系统中的压降可降低15%。

我们设计模具以精确控制弯曲半径。内半径保持在0.5毫米,弯曲角度保持在90°±1°。这防止了冲压过程中材料的应力开裂,并确保每个翅片在整个零件长度上的对齐偏差在0.1毫米以内。您可以直接将其安装到TO-220、TO-247或定制IGBT模块上,无需二次矫直。

材料选择:铝6061、铜C1100或定制合金

我们为冲压锯齿形散热器备有两种主要材料。铝6061-T6是我们针对重量敏感应用的首选,导热系数为167 W/m·K,屈服强度为276 MPa。当您需要385 W/m·K的热性能时,可选用铜C1100,但其重量比铝增加3倍。

对于高频开关应用,我们还可以加工C1020无氧铜。冲压模具根据每批材料进行调整,以补偿回弹。铝每次弯曲回弹0.5°至1°,而铜回弹1.5°至2°。我们的模具对此进行补偿,因此最终角度始终落在您的图纸公差范围内。成型后硬度通过洛氏硬度计验证,铝为45 HRC等效值(布氏硬度95),铜为40 HRC等效值。

级进模冲压:每分钟120次冲程,几何结构一致

我们的160吨高速冲床以每分钟120次冲程运行锯齿形散热器模具。每次冲程生产一个完整的翅片段,带材自动向前送进。这使得翅片间距的重复精度为±0.02毫米,总长度公差为±0.05毫米。模具采用D2工具钢制造,硬化至60 HRC,并涂覆氮化钛以将模具寿命延长至超过500,000次冲压。

我们使用伺服驱动送料器,将带材送进精度控制在±0.01毫米。这防止了材料滑动,并确保锯齿形图案从第一个零件到最后一个零件保持完美对齐。如果您需要二次加工,我们可以通过内部CNC铣削添加螺纹孔、螺柱或平面安装表面。这正是我们的CNC刀具选择指南发挥作用的地方——正确的立铣刀几何结构可保持加工基座无毛刺,并达到最终检验报告中看到的Ra 0.8 µm光洁度。

平面度控制,防止负载下出现热点

当您将此散热器螺栓固定到功率器件上时,界面中的任何间隙都会形成热阻。我们将安装表面的平面度控制在0.05毫米总指示读数(TIR)以内,覆盖整个基座。这是通过使用精密研磨的模具板和冲压前对带材进行应力消除来实现的。带材经过5辊矫直机矫平,消除卷曲并降低内应力。

冲压后,每个零件都在花岗岩检测平板上用千分表进行检查。超过0.05毫米平面度的零件将被拒收,而非返工。这确保了您的导热硅脂层始终很薄,通常为0.02毫米,转化为界面的热阻为0.15°C/W。这是我们CNC加工公差指南的直接受益——我们将与机加工零件相同的公差逻辑应用于冲压。

每次发货前检验:真实数据,而非样品

每批冲压锯齿形散热器均使用三坐标测量机(CMM)检验关键尺寸,使用轮廓仪检验表面光洁度,并使用硬度计进行材料认证。我们随每次发货提供完整的检验报告,包括每个零件测量的10个点的尺寸数据。报告显示实际值,而非合格/不合格标记。

我们还对每批生产中的一个样品进行盐雾测试,以验证阳极氧化层(如果您选择黑色阳极氧化,MIL-A-8625 Type II)。标准涂层厚度为18 µm,可通过300小时盐雾测试而无腐蚀。对于裸铝,我们施加透明铬酸盐转化涂层,防止储存和运输过程中的氧化。这在内部完成,因此我们控制周期时间和质量。

包装确保翅片从东莞到您手中保持笔直

锯齿形翅片在运输过程中受到冲击时易损坏。我们将每个散热器放入带有定制切割槽的瓦楞托盘,每个翅片对应一个槽。然后将托盘放入带有泡沫端盖的刚性纸箱中。这防止了翅片在空运或海运过程中弯曲或刮伤。

对于大批量订单,我们使用防静电气泡膜分层包装,并放入带干燥剂的防潮袋。我们的标准出口包装为5层瓦楞纸箱,经过1.2米跌落测试。您可以指定自己的包装要求,例如木托盘或带条形码标签的独立塑料袋。在过去5年中,我们已向40个国家发货超过200万个冲压零件,无一次损坏索赔。

交期与定价:无最小起订量,快速打样,更快量产

我们为常见锯齿形尺寸(长度25毫米至150毫米)备有标准模具,随时可上机生产。这意味着原型样品可在3天内发货,1,000件生产数量在7天内完成。由于我们是工厂,没有中间商加价。对于50毫米x 30毫米的铝制锯齿形散热器,1,000件单价为0.85美元,50,000件降至0.45美元。

定制形状需要新模具,制作周期为10个工作日,费用为800至2,500美元,具体取决于复杂程度。首次订单后模具归您所有。我们提供免费的可制造性设计(DFM)反馈,在收到您的图纸后24小时内回复。无最小起订量,您可以订购10件用于测试或100,000件用于生产——两者适用相同的质量控制标准。

规格数值
材料铝6061-T6或铜C1100
硬度45 HRC(铝),40 HRC(铜)
翅片厚度0.5毫米 – 2.0毫米
翅片间距2.0毫米 – 5.0毫米(±0.02毫米)
总长度公差±0.05毫米
平面度(安装表面)最大0.05毫米TIR
表面光洁度Ra 0.8 µm(CNC铣削基座)
弯曲角度精度90°±1°
交期(标准尺寸)7天
原型交期3天
最小起订量无最小起订量

定制冲压锯齿形散热器有最小起订量要求吗?

没有,我们无最小起订量——您可以订购5件用于验证或50,000件用于生产,单价根据数量调整。

可以定制翅片高度和锯齿折叠数量吗?

可以,模具可以修改以将翅片高度从5毫米改为25毫米,折叠数量从3改为12,换模时间为2天。

除尺寸检验外,你们如何控制质量?

我们对毛刺和划痕进行100%目视检查,并对每批进行统计过程控制(SPC)分析,同时提供包含CMM数据的完整检验报告。

获得定制散热器原型的最快方式是什么?

在中国时间上午10点前发送您的图纸,我们将在12小时内回复DFM反馈和原型报价;实物原型在3天内发货。

将您的图纸发送给我们,12小时内获得确定报价。电子邮件sc@bquq.com或WhatsApp +86 13713157787。我们是中国东莞的精密制造工厂,拥有20年CNC加工、冲压、弹簧和散热器经验。无最小起订量,无中间商,只提供符合您规格的零件。


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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