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王珂李蕾刘建伟张赭玮 《表面工程资讯》2022,(6):16-22
1东威科技:电镀设备龙头,进军新能源领域1.1PCB电镀设备龙头,发力新能源设备市场深耕PCB电镀设备近20年,成长为电镀设备领域的龙头。东威科技成立于2005年,2006年推出首条垂直连续电镀设备(VCP),成功进入印刷电路板(PCB)电镀设备领域,并奠定了公司的核心技术与业务基础。此后,公司专注于VCP技术的研发和技术改进,推出新型“卷对卷”“片对片”等新型垂直电镀设备,并进一步将产品范围延伸到PCB电镀的前道工艺——水平化铜,推出水平式表面处理设备。 相似文献
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电镀新工艺和新技术的回顾与展望 总被引:4,自引:2,他引:2
对20世纪后期以合金电镀和电子电镀、功能性电镀为主的电镀新工艺作了简要的回顾,对21世纪电镀技术在研制新材料特别是纳米材料中的作为做了展望。 相似文献
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本文采用Ni-Co合金电镀液,通过复合电镀方法在麻花钻头表面沉积一层或多层金刚石磨料,对电镀过程中各主要工艺参数的影响进行了试验研究,确定了电镀最佳工艺参数,试验结果表明,所获得的金刚石钻头可以用于玻璃,铁氧体,玛瑙,石材,陶瓷等硬脆性材料的钻削加工,本文对加工机理作了初步分析。 相似文献
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《金属精饰学会汇刊》2013,91(4):185-190
AbstractThis work presents an extensive computational fluid dynamic (CFD) study of eductor agitation in an electroplating tank. The mathematical model of the hydrodynamic properties is presented and verified in a velocity measurement cell, in which the calculation results are in good agreement with the measured values. The model is used to examine the behaviour of fluid flow in an electroplating tank, especially in the vicinity of printed circuit board and shields. The influence of the shields on solution recirculation is analysed and discussed. The results indicate that solution recirculation could be improved when the eductors are arranged inclined to the printed circuit board. 相似文献
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efficiency of short- and medium-wave infrared (IR) heat sources used to mount and dismount electronic modules is assessed. The analysis of the models of thermal fields shows that for KGM 30/300 halogen IR lamps, the heating nonuniformity for a printed circuit board is 45–55°С, and for the casings of electronic components, the temperature varies from 90 to 100°С. For an Elstein SHTS/4 ceramic IR heater, the heating nonuniformity for a printed circuit board is 8–13°С, the temperature of SMD component casings differs from temperature of the the printed circuit board: in BGA by 28–32°С, in QFP by 24–26°С, and in SMD by 5–20°С. The application of medium-wave ceramic infrared sources makes it possible to attain a higher heating uniformity in the working area and ensure an optimal temperature profile when mounting and dismounting surface-mounted electronic components. 相似文献
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用直流和单脉冲电镀法制备了Cu—nanoAl2O3复合镀层。通过扫描电镜观察了镀层的表面形貌,用X射线衍射仪分析了镀层的微观晶体结构,分别研究了影响直流和单脉冲纳米复合镀层显微硬度的各种因素。结果表明,与直流电镀方法相比,脉冲电镀方法使镀层晶粒尺寸变小,在T=24℃,Al2O3、粒子添加量25g/L、搅拌速度240r/min、阴极平均电流密度4A/dm^3条件下,直流电沉积Cu—nano Al2O3复合镀层硬度最大,在直流电镀工艺条件基础上选择频率为200Hz、工作比为0.3的单脉冲工艺条件制备的复合镀层硬度最大。 相似文献
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钻孔是印制电路板(PCB)制造的关键工序之一。对于钻孔工序而言,影响孔壁质量的主要因素是钻头的转速和进给速度。介绍一种基于ADT850运动控制板卡的电路板钻孔机控制系统设计方案,着重介绍控制系统的硬件组成及基于VC++的软件构架。该系统采用光栅尺的检测信号作为反馈信号构成全闭环系统,提高了控制系统的加工精度。 相似文献
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在线测试法就是通过计算机和集成电路在线测试仪对印刷电路板进行片级维修,正确运用在线片级维修法,不仅可以大大缩短机床的故障停机时间,更为重要的是,其直接或间接创造的经济效益是无法估量的。 相似文献
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A new type of micro-bipolar plate for micro-fuel cells was developed. This micro-bipolar plate was realised using LIGA technology (laser lithography system) together with improved electroplating processes for printed circuit boards (copper, nickel, gold) to produce micro-fuel cells with reduced precious metal loading, increased activity and durability, lower weight and negligible corrosion, and, in addition, lower production cost. 相似文献
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Angus Jeang Chien-Ping Chung Chung-Wei Chen Huan-Chung Li 《Journal of Materials Processing Technology》2009,209(6):2967-2977
As quality values failed to meet customers’ requirements when the hot-bar soldering process (HBSP) was first introduced in the electronic manufacturing service (EMS) company, it is the intention of this study to combine quality function deployment (QFD) and the Taguchi method to analyze the produced quality characteristics and to optimize the process parameters. The product from HBSP is a gate board that transmits vertical signals in thin film transistor liquid crystal display (TFT-LCD) modules. To produce a gate board through HBSP, a film of flexible printed circuit (FPC) is soldered onto the pad of a printed circuit board (PCB) with the hot-bar (HB) which is heated by a pulse heater. When performing a problem analysis, the strength of the solder joints is considered a response value of quality characteristics for the process of HBSP. The critical factors are then identified via the Taguchi method. The results of this study will indicate whether or not the quality of the gate board can be improved significantly and thereby satisfy customers’ requirements. 相似文献