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CNC加工液压活塞 | BQUQ精密制造

BQUQ采用1045钢或17-4PH不锈钢制造CNC加工液压活塞,圆度控制在0.005毫米以内,表面粗糙度达到Ra 0.4 µm。每件活塞出厂时跳动量为0.01毫米TIR,硬度为48–58 HRC,图纸确认后交期15天。这是中国制造的精密加工,无最小起订量要求。 为何活塞直径公差优于珩磨成本 我们在一次装夹中将外径加工至±0.005毫米,大多数缸体无需二次珩磨。该公差通过数字千分尺和Talyro


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BQUQ采用1045钢或17-4PH不锈钢制造CNC加工液压活塞,圆度控制在0.005毫米以内,表面粗糙度达到Ra 0.4 µm。每件活塞出厂时跳动量为0.01毫米TIR,硬度为48–58 HRC,图纸确认后交期15天。这是中国制造的精密加工,无最小起订量要求。

为何活塞直径公差优于珩磨成本

我们在一次装夹中将外径加工至±0.005毫米,大多数缸体无需二次珩磨。该公差通过数字千分尺和Talyrond圆度仪验证。您获得的是可直接安装的替换零件,而非需要返工的毛坯。

密封表面使用的材料与热处理工艺

标准液压缸采用1045中碳钢,然后对外表面进行感应淬火至52 HRC。对于腐蚀性或高压应用,我们使用17-4PH不锈钢(硬度44 HRC)或4140铬钼钢(淬火至58 HRC)。每种材料均附带钢厂材质证明,我们将硬化层深度保持在1.5–2.0毫米,确保密封表面在压力下不变形。

长活塞0.01毫米跳动量的控制方法

超过300毫米长的活塞在加工时容易弯曲。我们使用中心架和尾座活顶尖,然后分两刀加工外径:粗车切深0.5毫米,精车切深0.05毫米。在两顶尖之间,我们使用分辨率为0.002毫米的千分表在三个点(两端和中间)检查跳动量。如果跳动量超过0.01毫米,则重新装夹并重新切削,绝无例外。

Ra 0.4表面粗糙度实现低摩擦密封

我们使用CBN刀片以180米/分钟的切削速度和0.08毫米/转的进给量车削外径至Ra 0.4 µm。这种表面质量可减少密封件磨损和摩擦,对于在250 bar系统压力下运行的活塞至关重要。对于带槽活塞,我们用0.2毫米倒角去除边缘毛刺,避免装配时撕裂O型圈。

每次发货前的检验

每件活塞均经过100%全检,而非抽样检验。我们使用内径千分尺和卡尺测量外径、内径、槽宽和槽深。圆度和跳动量在Talyrond 73上检测。硬度使用便携式洛氏硬度计验证。最终报告包含公差严于±0.01毫米的所有特征的CMM检测报告。随货附有签署的检验单。

螺纹和沟槽加工无毛刺

大多数液压活塞带有杆端或压盖螺母的螺纹端。我们使用单点螺纹刀具切削螺纹,然后用刮刀去除螺纹起始端和退出端的毛刺。对于安装活塞环的内沟槽,我们使用刀尖圆弧半径为0.4毫米的切槽刀片,然后用通止规检查槽宽。

交期与起订量:中国制造,无最小起订量

我们运营一家24/7全天候CNC车间,拥有30台加工中心和15台车削中心。这使我们能够为1至500件数量提供15天交期。无起订量——订购一件原型或500件批量生产,设置成本相同。对于加急订单,我们可在7天内交货,需加收20%附加费。

规格参数数值
材料1045钢、4140合金钢、17-4PH不锈钢、6061-T6铝
直径范围20毫米至200毫米
长度范围50毫米至1000毫米
硬度44–58 HRC(取决于材料和热处理)
外径公差±0.005毫米
圆度0.005毫米
同轴度/跳动量0.01毫米TIR
表面粗糙度Ra 0.4 µm(标准Ra 0.8 µm)
螺纹精度ISO 6g / 6H,使用螺纹规检测
交期图纸确认后15天(可加急7天)
起订量无起订量(接受单件)

如何为您的活塞材料选择合适的切削刀具

硬度58 HRC的4140钢需要CBN刀片,而1045钢可使用涂层硬质合金刀具。如果您正在指定加工工艺,请参阅我们的CNC切削刀具选择指南,将刀片牌号与您的材料和硬度匹配。

液压密封实际需要的公差等级

并非所有活塞都需要±0.005毫米。对于标准聚氨酯密封件,±0.02毫米已足够。对于金属对金属密封或高速杆件,则需要±0.005毫米。请阅读我们的CNC加工公差指南,避免过度指定公差而增加成本。

CNC加工液压活塞的起订量是多少?

无起订量——我们接受单件原型或500件批量生产,单价相同。

能否在活塞上加工定制沟槽或螺纹?

可以,我们可根据您的图纸加工任意槽宽、槽深和螺纹螺距,并在发货前使用量规验证每个特征。

如何控制500件批量活塞的质量?

我们首件全检,生产过程中每10件抽检1件,包装前对外径、跳动量和硬度进行100%终检。

定制活塞的典型交期是多久?

标准交期为图纸确认后15天;加收20%加急费可缩短至7天。

将您的图纸发送至sc@bquq.com或WhatsApp +86 13713157787。我们将在12小时内回复确定报价,包括单价、刀具成本和交货日期。无需起订量。


相关产品

参数

参数能力范围
材料AL6061/7075, SUS303/304/316, 45#钢, T2铜, H59黄铜, POM, PEEK, 尼龙
公差±0.005mm标准,±0.003mm可按需定制
设备3/4/5轴CNC, 车铣复合, 瑞士型车床
表面处理阳极氧化, 镀镍, 镀锌, 钝化, 喷砂, 抛光
尺寸范围最大400 x 300 x 200 mm
打样72小时,样品无最小起订量
检测每批次提供完整报告,可按需提供CMM数据

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