华南NEPCON想看看这方面的实物...只见到了一个双空心波的模型...,HOME里有德系的two in one chip wave...进口和自制的都有...,发贴讨论一下two in one chip wave的设计目的、实现方法以及优缺点...,附件是相关CON DIP WAVE SOLDERING的参考报告供参考...,呵呵。 [attachment=93598] [attachment=93599]
看看 two in one chip wave 分段 a-d 的温度曲线与传统双波之间发生了哪些差异...,呵呵。 [attachment=93730]
今生无悔
2011-09-08 17:18
引用楼主panda-liu于2011-09-05 10:59发表的 About two in one chip wave(二合一喷射波) : 华南NEPCON想看看这方面的实物...只见到了一个双空心波的模型...,HOME里有德系的two in one chip wave...进口和自制的都有...,发贴讨论一下two in one chip wave的设计目的、实现方法以及优缺点...,附件是相关CON DIP WAVE SOLDERING的参考报告供参考...,呵呵。 [图片] [图片]
SWS与WS是互补关系而不是替代关系各位看官要明白哦...三年前有人提出恐怕三年后还会有人提出的...,这次华南NEPCON咨询一家著名厂家...偶说看到有资料显示SWS的独立NOZZLE可以90°转向...他却浑然不知可见对用户的迫切需求依然知之甚少...,two in one chip wave的异军突起不是将NOZZLE复杂化而是更简单、简洁的克服传统WS NOZZLE的缺陷...也是一种互补关系...,降低POT的容量、焊剂和波面热能的高效利用、锡的穿孔能力提高、吹孔和锡珠现象下降等等那样不是当务之急...,不要躺在传统标准上思考问题...SWS与WS之间互补关系越是看的清晰...two in one chip wave的作用就越是明显了...,呵呵。
老瑞士后代是这样回答的... Preheating is achieved, for example, by running a background convection air system to provide constant background heat to start the thermal build-up in the PCB assembly. Extra heat is applied by peak emission IR quartz heaters to quickly build up underside heating. Both are controllable by visko so that a three-preheat machine can be programmed to use only convected air in preheat 1 but progressively apply IR in preheats 2 and 3 if that is what the product needs. In comparison with a double wave there is only one temperature peack with a controllable wetting time. Therefore the thermal stress for mounted components is minimal. The risk of no existence of fluxer at the second peack is not existing. The programme is set up to offer the optimum facilities to the PCB being soldered. It ensures that all the flux is used without leaving excess to be cleaned off later but it also does not burn it all prematurely so that there is no chance for oxidation to take place again on any of the solder pads. [attachment=93957] [attachment=94060] [attachment=94062]