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BQUQ 钣金冲压精密零件 中国制造 无最小起订量

钣金冲压是一种冷成型工艺,将卷料金属带通过冲压模具,在一次连续冲程中完成切割、弯曲和压印。在BQUQ东莞工厂,我们将关键尺寸的冲压公差控制在±0.01mm,毛刺高度低于0.05mm,平面度在每100mm内0.1mm——这得益于20年的模具设计精进和伺服压力机控制。典型原型件7天发货,生产件15天发货,热处理冲压件硬度可达58 HRC且无开裂。 决定零件真实成本的模具钢选择 冲压模具是每个零件的核


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钣金冲压是一种冷成型工艺,将卷料金属带通过冲压模具,在一次连续冲程中完成切割、弯曲和压印。在BQUQ东莞工厂,我们将关键尺寸的冲压公差控制在±0.01mm,毛刺高度低于0.05mm,平面度在每100mm内0.1mm——这得益于20年的模具设计精进和伺服压力机控制。典型原型件7天发货,生产件15天发货,热处理冲压件硬度可达58 HRC且无开裂。

决定零件真实成本的模具钢选择

冲压模具是每个零件的核心。对于超过500,000次冲程的模具,我们使用D2、DC53和SKD11工具钢。对于超过100万件的大批量生产,我们在切削刃上改用硬质合金镶件——这将模具磨损减少70%,并确保整个批次中零件公差保持稳定。我们在报价前还会分析您的年需求量:如果您每年需要5,000件,我们推荐淬硬钢模具;如果需要500万件,我们制造8-12工位的级进模。仅这一项前期工程决策,与通用模具方案相比,就能将您的单件成本降低30-40%。

级进模与单工序模:我们根据您的零件几何形状选择方案

我们每天运行三种压力机:25吨至400吨伺服压力机、最高600次/分钟的高速压力机,以及用于深拉深杯形件的液压机。对于带孔的平面零件,我们使用级进模在一次通过中完成落料、冲孔、弯曲和压印——消除了二次加工。对于深拉深或复杂90度翻边的零件,我们改用液压机上的传递模来控制材料流动并防止撕裂。每套模具在钢材切割前都经过AutoForm软件模拟,因此您绝不会为试错式模具制造买单。我们保证在样品生产后24小时内完成首件检验。

我们用于冲压的材料和热处理

我们常备SPCC、SECC、SUS301、SUS304、5052铝和C1100铜,厚度从0.1mm到6.0mm。对于淬硬冲压件,我们使用预回火马氏体钢(如SK5、SK7),成型后硬度可达48-52 HRC,或在真空炉中进行后热处理至58 HRC且变形极小。表面处理选项包括光亮退火、电镀锌和热浸镀锌。我们还通过感应淬火对磨损区域进行选择性硬化——您的零件获得硬质边缘和韧性芯部。所有材料证书均可追溯至钢厂炉号,我们为95%的常用合金备有卷料库存,因此您的交期绝不会因材料采购而延误。

每个冲压毛坯的毛刺控制和边缘质量

毛刺高度是冲压中最常见的拒收原因。我们通过保持每侧模具间隙为材料厚度的5-8%来控制毛刺——对于1.0mm钢材,间隙为0.05-0.08mm。我们的压力机配备自动模具高度调整功能,可在长时间运行中补偿热膨胀,即使在100,000次冲程后毛刺仍保持在0.05mm以下。对于接触密封件或配合面的边缘,我们增加精冲二次工序,实现100%剪切面——无断裂区、无毛刺。我们使用光学比较仪对每件首件进行毛刺测量,并在生产过程中每2小时测量一次。如果您的图纸显示毛刺方向箭头,我们会相应调整模具方向——不收取额外费用。

每次发货前检验:三坐标测量机和硬度报告

每批次均附有来自蔡司三坐标测量机(分辨率0.5µm)的尺寸报告。我们根据您的2D图纸或3D模型测量所有关键尺寸、孔位和轮廓公差。硬度使用洛氏硬度计(钢材)和维氏硬度计(薄板)进行验证。表面粗糙度使用轮廓仪检测——冲压表面我们保持Ra 0.8µm,压印区域Ra 0.2µm。我们还进行100%目视检查,在2倍放大下检查划痕、凹痕和变色。检验报告在样品完成后24小时内以及每次生产发货时通过电子邮件发送给您。如果我们超出公差,我们将免费重新生产——这已写入合同。

参数规格备注
材料厚度0.1 – 6.0 mm钢、不锈钢、铝、铜
公差(冲孔)±0.01 mm关键孔位
公差(弯曲)±0.05 mm弯曲长度超过100mm
表面粗糙度Ra 0.8 µm冲压态;压印区域Ra 0.2 µm
毛刺高度≤0.05 mm标准;精冲=0
平面度0.1 mm / 100 mm去应力后
硬度(后热处理)48 – 58 HRC真空热处理
最大零件尺寸600 mm x 400 mm更大尺寸可通过串联压力机
模具寿命50万 – 500万次冲程大批量使用硬质合金
交期7天(原型),15天(生产)自图纸批准起

无最小起订量:从单件原型到百万件批量

大多数冲压工厂要求10,000件起订以摊销模具成本。我们不这样做。我们的无最小起订量政策意味着您可以订购1件原型进行装配测试、500件用于试产,或500,000件用于全面生产。对于小批量,我们使用模块化模具,将设置时间和模具成本降低60%。对于大批量,我们以400-600次/分钟的速度运行高速压力机,保持有竞争力的单价。我们理解产品开发是迭代过程——您的第一笔订单可能是50件,第二笔可能是5,000件。我们免费为您保存模具2年,因此重新订购只需一个电话。无最低要求、无仓储费、无隐藏设置费。

我们如何确保跨批次的可重复精度

冲压精度会因模具磨损和压力机温度变化而随时间漂移。我们通过模内传感器来应对,每个循环都测量带材厚度和冲压力。如果冲压力偏离基准超过3%,压力机自动停止,操作员调整模具。这种闭环控制确保您的零件从第一件到第100,000件保持一致。我们还使用固定参考点系统——每套模具都注册到主板上,因此维护后重新安装模具可在0.005mm内重现相同对准。对于多腔模具,我们使用流量控制销平衡材料流动,确保每个型腔产生相同的壁厚。这就是为什么我们的重复订单显示Cpk(过程能力指数)高于1.67,意味着每百万件中超出公差的不超过0.6件。

二次加工:攻丝、铆接和焊接均在厂内完成

您的冲压毛坯通常不仅需要成型。我们拥有12台CNC攻丝机,适用于M1.6至M12螺纹,螺纹深度精度为±0.1mm。我们还进行自冲铆接(用于多层组件)、钢和不锈钢的点焊,以及用于枢轴关节的径向铆接。这消除了您寻找二次供应商的需求——我们在同一屋檐下控制整个流程。对于需要螺纹嵌件的零件,我们使用热熔嵌件,在1.0mm钢板上可实现500N的拉拔力。所有二次加工均记录在同一份检验报告中,因此您收到的是完整零件的单一合格证书。这缩短了您的供应链并减少了来料检验时间。

我们应用于您图纸的降本设计建议

在报价前,我们的工程师会审查您的图纸,提出适合冲压的修改建议。例如,我们建议在内角添加0.5mm圆角而不是尖锐的90度弯曲——这减少了应力裂纹并延长了模具寿命。我们建议孔径至少为材料厚度的1.5倍,以防止冲头断裂。我们还建议弯曲释放槽:在弯曲末端设置2mm宽的释放槽可防止撕裂。这些更改不会改变您的零件功能,但可将单件成本降低15-25%。我们在制造任何模具前向您发送带标注的图纸及建议——不收取费用。对于复杂几何形状,我们还可以建议从冲压改为CNC加工;我们的CNC刀具选择指南可帮助您比较选项。同时,我们的CNC加工公差指南解释了何时加工比冲压更适合精密特征。

钣金冲压件的起订量是多少?

无最小起订量——以相同单价订购1件原型或100万件,模具免费存储2年。

您能为我的零件定制模具设计吗?

可以,我们根据您的零件、批量和公差要求调整模具几何形状、材料和热处理。

您在生产过程中如何控制质量?

我们使用模内力传感器、每2小时进行三坐标测量机检验,以及100%目视检查;每次发货均附带完整尺寸报告。

生产订单的典型交期是多久?

原型件自图纸批准起7天发货,生产件15天发货,重新订购交期为10天。

在12小时内获得确定报价——将您的图纸发送至sc@bquq.com或WhatsApp +86 13713157787。我们将审查您的零件几何形状,推荐模具类型,并提供包含材料、热处理和检验的单价。中国精密制造,拥有20年冲压经验背书。


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参数

参数能力
材料SPCC、SGCC、SUS301/304/316、黄铜、铜、铍铜、磷青铜
工艺级进模冲压、精冲、深拉深、折弯、攻丝
公差±0.01mm标准,±0.005mm可按要求
表面处理镀锌、镀镍、镀锡、镀金、粉末喷涂、钝化、阳极氧化
模具尺寸最大1200 x 800 mm,16-250吨冲床
厚度0.05 - 6.0 mm板材,线材0.1 - 8.0 mm
打样7-15天模具制作,样品无最小起订量
检测每批次全检报告,CMM和三坐标光学测量

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