产品

CNC加工船用黄铜五金件 | BQUQ精密制造

为何船用黄铜比标准CNC零件要求更严格的公差 盐水环境极为严苛。标准黄铜零件在数月内便会腐蚀、卡死并失效。我们的CNC加工船用黄铜五金件采用C46400海军黄铜(铜-锌-锡合金),屈服强度170 MPa,延伸率30%。我们在关键密封面上保持±0.005 mm的公差,比典型船用五金规格严格40%。螺纹轴的跳动量控制在0.02 mm TIR以下。这不是装饰性五金件——而是用于通船体接头、螺旋桨轴联轴器


分享此产品


获取报价

产品详情

为何船用黄铜比标准CNC零件要求更严格的公差

盐水环境极为严苛。标准黄铜零件在数月内便会腐蚀、卡死并失效。我们的CNC加工船用黄铜五金件采用C46400海军黄铜(铜-锌-锡合金),屈服强度170 MPa,延伸率30%。我们在关键密封面上保持±0.005 mm的公差,比典型船用五金规格严格40%。螺纹轴的跳动量控制在0.02 mm TIR以下。这不是装饰性五金件——而是用于通船体接头、螺旋桨轴联轴器和甲板系缆桩的承重、耐腐蚀部件,必须经受10,000小时以上的盐雾测试。

合金选择:C46400海军黄铜与C36000易切削黄铜

我们为船用用途加工两种主要合金。C46400海军黄铜的抗拉强度为110 MPa,并能抵抗脱锌——这是海水环境中的首要失效模式。C36000易切削黄铜的加工周期快30%,但仅适用于内部或淡水应用。对于暴露在外的五金件,我们默认使用C46400。两种合金均备有圆棒库存,直径从6 mm至100 mm,六角棒对边距从10 mm至50 mm。我们的精密制造工艺在密封面上保持Ra 0.8 µm的表面光洁度,在装饰区域保持Ra 1.6 µm。硬度认证为75-90 HRB(洛氏B),约相当于20-25 HRC,在可加工性与耐磨性之间取得平衡。

螺纹与密封面:我们如何防止50 Bar压力下的泄漏

船用接头首先在螺纹处失效。我们使用单点CNC车床刀具而非丝锥切削螺纹,以实现55° BSP锥螺纹或60° NPT螺纹形式,在20 mm螺纹长度上的螺距误差小于0.01 mm。密封面使用修光刃刀片以1,800 RPM转速和0.05 mm切削深度加工,产生Ra 0.4 µm的镜面光洁度。这消除了大多数接头在高达50 bar工作压力下使用螺纹密封胶带的需求。我们用经过校准的螺纹环规验证每个螺纹,用轮廓仪验证每个密封面。如果您需要定制螺纹形式(公制、UNF或左旋),我们的CNC程序可在24小时内调整。

腐蚀防护:铬酸盐转化处理与化学镀镍

裸黄铜在数周内就会失去光泽。我们提供两种标准表面处理。黄色铬酸盐转化处理(MIL-DTL-5541)呈现金色色调,耐盐雾96小时——足以满足甲板五金件需求。化学镀镍(MIL-C-26074)增加25 µm的硬度(相当于高达55 HRC),并将耐盐雾性能提升至500小时以上。为兼容牺牲阳极,我们可以将黄铜保持裸态或涂覆透明清漆。所有表面处理均在厂内完成,与外协相比缩短了5天交货期。我们备有1,000公斤预处理库存,因此您的CNC加工船用黄铜五金件订单在收到图纸当天即可开始生产。

每次发货前的检验:三坐标测量机、盐雾测试和尺寸报告

每批产品——而非每第10件——都经过检验。我们使用分辨率为0.001 mm的蔡司三坐标测量机检查关键直径、螺距和同轴度。盐雾试验箱对每批的一个样品进行96小时测试,以验证您指定的表面处理。每次发货均附带尺寸报告(含实际测量值)、材料证书(含炉号)和硬度报告。我们保留测试试样12个月。如果零件检验不合格,将被报废而非返工。我们船用五金件的拒收率为0.3%——我们之所以知道,是因为我们按客户追踪这一数据。

参数规格
主要合金C46400海军黄铜(Cu 60%,Zn 39.25%,Sn 0.75%)
次要合金C36000易切削黄铜(Pb 3.0%)
棒材直径范围6 mm – 100 mm圆棒,10 mm – 50 mm六角棒
硬度(C46400)75-90 HRB(相当于20-25 HRC)
尺寸公差±0.005 mm(关键特征),±0.02 mm(一般)
表面光洁度Ra 0.4 µm(密封面),Ra 1.6 µm(装饰面)
跳动量(同轴度)≤ 0.02 mm TIR
螺距精度20 mm长度上±0.01 mm
耐盐雾性能96小时(铬酸盐),500小时以上(化学镀镍)
交货期12个工作日(标准),5天(加急,+20%)
最小起订量无最小起订量——1件至100,000件

交货期计算:为何12天比本地供应商快3周

大多数美国或欧盟机械加工厂对船用黄铜的报价为4-6周。我们从中国东莞发货,标准零件在12个工作日内完成。具体分解如下:1天用于程序验证,2天用于材料切割和准备,5天用于CNC加工(3轴和5轴铣床、瑞士型车床),2天用于表面处理和检验,2天用于包装和出口文件。我们始终备有2,000公斤C46400棒材库存。对于重复订单,我们会存储您的夹具和程序,将下次交货期缩短至8天。空运至洛杉矶需3天,至汉堡需4天。门到门总时间:15-16天。海运较慢,但运输成本降低80%。

为何无最小起订量适用于原型和小批量生产

我们不设最小起订量。这在中国的工厂中并不常见。您可以订购1件用于原型测试,或50,000件用于船队改造。单件价格按可预测方式递减:1-10件价格为1,000件基准价的3.2倍;100件为1.5倍;1,000件为基准价。标准螺纹形式和直径的刀具免费。对于定制轮廓,我们收取一次性编程费150-400美元,订单超过500件时免收。这种模式让您无需承担库存风险即可验证设计。许多客户订购5件,测试3个月,然后扩展到5,000件。

我们如何处理定制图纸和GD&T标注

请以STEP、IGES或PDF格式发送您的图纸。我们在4小时内检查可制造性——具体包括拔模角、壁厚和螺纹深度。如果您的图纸包含过度约束的GD&T标注(例如,100 mm表面上0.002 mm的平面度),我们会标记并提供替代方案。我们可加工最大M80的螺纹和最小1 mm直径的通孔。壁厚可薄至1.5 mm而不会翘曲。我们精通ASME Y14.5标准,能正确解读位置度、同轴度和轮廓度公差。如需深入了解我们如何为黄铜选择切削刀具,请阅读我们的CNC切削刀具选择指南。要了解哪些公差对您的设计是可行的,请查看我们的CNC加工公差指南

船用黄铜零件的最小起订量是多少?

无最小起订量——我们以相同的质量标准加工单个原型或完整生产批次,仅单件价格有所不同。

您能否匹配我现有供应商的特定合金或表面处理?

可以——请将样品或材料规格表发送给我们,我们将在5个工作日内采购完全相同的合金(包括UNS编号,如C48500)并复现表面处理。

对于5件的小批量订单,你们如何验证质量?

20件以下的订单,每件均使用三坐标测量机和螺纹规进行100%检验;较大订单按每批5%随机抽样,并附完整尺寸报告。

您能否在船展或改造截止日期前交付加急订单?

可以——加收20%附加费,我们可将标准合金的交货期压缩至5个工作日,使用预切棒材和加班加工班次。

我们是BQUQ,一家位于中国东莞的精密制造工厂,拥有20年CNC加工经验。我们已向14个国家交付超过200万件船用黄铜零件。我们的CNC加工船用黄铜五金件在中国制造,但按照ISO 2768-mK和ASME Y14.5标准进行检验。无最小起订量意味着您可以用单个零件来测试我们。

将您的图纸发送至sc@bquq.com或WhatsApp +86 13713157787。您将在12小时内获得包含精确价格、交货期和表面处理选项的固定报价。


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

联系我们报价
获取报价
我们使用cookie来改善您的在线体验。继续浏览本网站即表示您同意我们使用cookie

Cookies

Please read our Terms and Conditions and this Policy before accessing or using our Services. If you cannot agree with this Policy or the Terms and Conditions, please do not access or use our Services. If you are located in a jurisdiction outside the European Economic Area, by using our Services, you accept the Terms and Conditions and accept our privacy practices described in this Policy.
We may modify this Policy at any time, without prior notice, and changes may apply to any Personal Information we already hold about you, as well as any new Personal Information collected after the Policy is modified. If we make changes, we will notify you by revising the date at the top of this Policy. We will provide you with advanced notice if we make any material changes to how we collect, use or disclose your Personal Information that impact your rights under this Policy. If you are located in a jurisdiction other than the European Economic Area, the United Kingdom or Switzerland (collectively “European Countries”), your continued access or use of our Services after receiving the notice of changes, constitutes your acknowledgement that you accept the updated Policy. In addition, we may provide you with real time disclosures or additional information about the Personal Information handling practices of specific parts of our Services. Such notices may supplement this Policy or provide you with additional choices about how we process your Personal Information.


Cookies

Cookies are small text files stored on your device when you access most Websites on the internet or open certain emails. Among other things, Cookies allow a Website to recognize your device and remember if you've been to the Website before. Examples of information collected by Cookies include your browser type and the address of the Website from which you arrived at our Website as well as IP address and clickstream behavior (that is the pages you view and the links you click).We use the term cookie to refer to Cookies and technologies that perform a similar function to Cookies (e.g., tags, pixels, web beacons, etc.). Cookies can be read by the originating Website on each subsequent visit and by any other Website that recognizes the cookie. The Website uses Cookies in order to make the Website easier to use, to support a better user experience, including the provision of information and functionality to you, as well as to provide us with information about how the Website is used so that we can make sure it is as up to date, relevant, and error free as we can. Cookies on the Website We use Cookies to personalize your experience when you visit the Site, uniquely identify your computer for security purposes, and enable us and our third-party service providers to serve ads on our behalf across the internet.

We classify Cookies in the following categories:
 ●  Strictly Necessary Cookies
 ●  Performance Cookies
 ●  Functional Cookies
 ●  Targeting Cookies


Cookie List
A cookie is a small piece of data (text file) that a website – when visited by a user – asks your browser to store on your device in order to remember information about you, such as your language preference or login information. Those cookies are set by us and called first-party cookies. We also use third-party cookies – which are cookies from a domain different than the domain of the website you are visiting – for our advertising and marketing efforts. More specifically, we use cookies and other tracking technologies for the following purposes:

Strictly Necessary Cookies
These cookies are necessary for the website to function and cannot be switched off in our systems. They are usually only set in response to actions made by you which amount to a request for services, such as setting your privacy preferences, logging in or filling in forms. You can set your browser to block or alert you about these cookies, but some parts of the site will not then work. These cookies do not store any personally identifiable information.

Functional Cookies
These cookies enable the website to provide enhanced functionality and personalisation. They may be set by us or by third party providers whose services we have added to our pages. If you do not allow these cookies then some or all of these services may not function properly.

Performance Cookies
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.

Targeting Cookies
These cookies may be set through our site by our advertising partners. They may be used by those companies to build a profile of your interests and show you relevant adverts on other sites. They do not store directly personal information, but are based on uniquely identifying your browser and internet device. If you do not allow these cookies, you will experience less targeted advertising.

How To Turn Off Cookies
You can choose to restrict or block Cookies through your browser settings at any time. Please note that certain Cookies may be set as soon as you visit the Website, but you can remove them using your browser settings. However, please be aware that restricting or blocking Cookies set on the Website may impact the functionality or performance of the Website or prevent you from using certain services provided through the Website. It will also affect our ability to update the Website to cater for user preferences and improve performance. Cookies within Mobile Applications

We only use Strictly Necessary Cookies on our mobile applications. These Cookies are critical to the functionality of our applications, so if you block or delete these Cookies you may not be able to use the application. These Cookies are not shared with any other application on your mobile device. We never use the Cookies from the mobile application to store personal information about you.

If you have questions or concerns regarding any information in this Privacy Policy, please contact us by email at . You can also contact us via our customer service at our Site.