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BQUQ工艺弹簧五金系列 | 中国定制精密弹簧

这是BQUQ的工艺弹簧五金系列——一整套为精密制造而生的定制压缩弹簧、拉伸弹簧、扭簧和恒力弹簧。我们提供线径公差±0.01 mm、跳动0.02 mm TIR、表面粗糙度Ra 0.4 µm,原型件7天内发货,量产件15天内发货。每根弹簧均在我们拥有20年历史的东莞工厂制造,并实行无最小起订量政策,您可以在批量下单前先测试一件。 我们如何将线径控制在±0.01 mm 线径是廉价弹簧最先出现问题的环


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这是BQUQ的工艺弹簧五金系列——一整套为精密制造而生的定制压缩弹簧、拉伸弹簧、扭簧和恒力弹簧。我们提供线径公差±0.01 mm、跳动0.02 mm TIR、表面粗糙度Ra 0.4 µm,原型件7天内发货,量产件15天内发货。每根弹簧均在我们拥有20年历史的东莞工厂制造,并实行无最小起订量政策,您可以在批量下单前先测试一件。

我们如何将线径控制在±0.01 mm

线径是廉价弹簧最先出现问题的环节。我们通过采用带闭环激光测量系统的CNC卷簧机来解决这一问题,该系统在弹簧成型时对每一圈进行测量。系统实时调整张力,确保0.1 mm至12 mm的线径保持一致,不会出现机械限位常见的漂移。例如,2.0 mm的线材在10,000件批次中始终保持在2.000 mm ±0.01 mm。当您的装配件将弹簧用作定位件或接触点时,这种一致性至关重要。

每套线圈组的跳动控制在0.02 mm TIR

跳动是旋转或往复装配中的隐形杀手。我们将两端线圈磨平并保证平行度,然后用带千分表的V型块对每根弹簧进行检测。对于自由长度不超过50 mm的弹簧,我们的最大总指示跳动为0.02 mm TIR。这不是最佳情况下的数值——而是我们出货的最差标准。如果您的应用有紧密的孔径,这种跳动控制可防止卡滞和不均匀磨损,从而延长机构的使用寿命。

我们使用的材料与热处理工艺

我们库存五种弹簧级材料:琴钢丝(ASTM A228)、油淬铬硅钢(ASTM A401)、302不锈钢(ASTM A313)、17-7 PH(ASTM A313)以及用于高温工况的Inconel X-750。热处理在可控气氛炉中进行,以防止脱碳。铬硅弹簧硬度为48–52 HRC,琴钢丝为45–50 HRC。每件产品在卷制后均进行去应力处理,对于关键应用,我们还可提供喷丸处理,将疲劳寿命提升高达300%。

表面粗糙度Ra 0.4 µm与喷丸处理

表面光洁度不仅仅是外观问题。裂纹始于表面缺陷。我们的标准表面粗糙度为Ra 0.4 µm,通过滚磨或外圆无心磨削实现。对于高循环应用,我们提供陶瓷介质喷丸处理,以引入压应力。这是可量化的:未经喷丸处理可承受100,000次循环的弹簧,经喷丸后可承受300,000次循环。我们还提供符合ASTM A967标准的不锈钢钝化处理,以去除游离铁并防止腐蚀。

每次发货前的检验流程

工艺弹簧五金系列中的每根弹簧在出厂前均经过5步检查。首先,我们使用数字高度规测量自由长度和密实高度。其次,我们使用分辨率为0.1 N的测力传感器在指定变形量下测试载荷。第三,我们使用塞规检查外径和内径。第四,我们在V型块上验证跳动。第五,我们在放大条件下进行100%目视检查,以发现表面缺陷。每笔订单均附带尺寸报告,我们保留记录10年,以防现场失效。

我们如何在保证质量的同时实现7天交期

大多数中国工厂因批量排产而报价20天。我们反其道而行之——在CNC卷簧机上实行单件流生产。这意味着您的原型件7天内发货,最多5,000件的量产订单15天内发货。我们库存20吨涵盖全部五种材料的线材,因此从不等待原材料。如果您有紧急订单,我们可以通过DHL在48小时内发出单件弹簧,但这是额外服务,并非标准流程。

我们设计规避的常见失效模式

我们在客户提供的弹簧中看到三种失效模式:永久变形(set)、疲劳裂纹和腐蚀。永久变形通过选用比应用要求更高等级的材料来消除——例如,当工作温度超过80°C时,使用铬硅钢代替琴钢丝。疲劳通过喷丸处理以及将设计应力控制在材料抗拉强度50%以下来解决。腐蚀通过选用不锈钢或钝化碳钢来处理。将您的载荷和变形要求发送给我们,我们会告诉您应使用哪种材料和表面处理。如需更深入了解工装和公差如何影响您的零件,请参阅我们的CNC刀具选择指南CNC加工公差指南

规格参数数值
线径范围0.1 mm – 12.0 mm
最大自由长度150 mm(更长可定制)
外径范围1.0 mm – 80.0 mm
材料琴钢丝、铬硅钢、SS302、17-7 PH、Inconel X-750
硬度(铬硅钢)48–52 HRC
硬度(琴钢丝)45–50 HRC
线径公差±0.01 mm
跳动(TIR)最大0.02 mm
表面粗糙度标准Ra 0.4 µm,可选Ra 0.2 µm
载荷公差指定变形量下±3%
原型交期7天
量产交期15天(最多5,000件)
最小起订量无最小起订量——可订1件或100,000件

你们的最小起订量是多少?

无最小起订量——我们接受单件原型供您在批量生产前进行测试。

你们能否定制标准线圈以外的弹簧几何形状?

可以,我们可根据您的CAD文件制造锥形、鼓形、沙漏形和变节距弹簧,并支持定制端部(闭端、磨平端或钩环端)。

你们如何保证大批量订单的质量?

我们对线径和载荷进行SPC监控,CpK值达到1.33或更高,每次发货均附带完整的尺寸报告。

量产订单的典型交期是多久?

原型件7天内发货,最多5,000件的量产订单在图纸确认后15天内发货。

准备好测试工艺弹簧五金系列了吗?发送您的图纸或注明载荷、变形量和使用环境。我们将在12小时内回复正式报价。将文件发送至sc@bquq.com或通过WhatsApp联系+86 13713157787。无最小起订量,无需等待——您的定制弹簧今天即可开始。


相关产品

参数

参数能力
材料SUS302/304/316、SWC琴钢丝、SWP音乐钢丝、65Mn、磷青铜、铍铜
类型压缩弹簧、拉伸弹簧、扭簧、线成型件、电池弹簧、触片弹簧
线径0.05 - 12.0 mm
公差±0.02mm标准,±0.01mm可按要求提供
表面处理镀锌、镀镍、发黑、钝化、喷丸
设备CNC弹簧卷制机、扭簧机、线材成型机
打样72小时,样品无最小起订量
检测每批负载测试,疲劳测试数据可按要求提供

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