Electronics Forum | Mon Apr 10 15:34:53 EDT 2017 | mrich208
Hey Jerry, The valve that sends air to the head of the inserter does not close when you press the "Interlock" button. If you press on the end of the solenoid with a screewdriver to force it the air makes it to the head. If doesn't seem like it is tr
Electronics Forum | Sun Apr 16 11:16:27 EDT 2017 | davef
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Electronics Forum | Mon Apr 17 10:21:21 EDT 2017 | dontfeedphils
So I'm starting up a conformal coating process from scratch (again, although it's been about 10 years) and I'm looking for the best option for verifying thickness. I plan on going the "coupon per setup" route which will encompass both our manual spr
Electronics Forum | Wed Apr 19 02:31:02 EDT 2017 | robl
Hi Phil, We ask our PCB suppliers for solder samples and any drop out from manufacturing PCBs and use these for profiling, test process runs etc. If your purchasing team is approachable enough it is worth having the conversation. I would alway
Electronics Forum | Fri May 05 10:49:54 EDT 2017 | dontfeedphils
So I think I've given up a bit on the FR4 coupons due to complexity and having to custom order them every time we'd need a reorder. In the past I've used aluminum coupons, about the size of a regular business card. Some extensive googling hasn't tu
Electronics Forum | Wed Apr 19 09:25:05 EDT 2017 | charliedci
We run loader (no conveyor) printer (conveyor) P&P (conveyor) P&P. Hand carry to reflow, hand carry to AOI. Conveyors are there for reason you mentioned, access to equipment. It is much easier to move conveyor than P&P or printer. Fortunately have no
Electronics Forum | Mon Apr 24 11:44:53 EDT 2017 | emeto
It is good to have: conveyor after SPI(if you don't have SPI should be after the printer), conveyor before the oven(inspection station is better), conveyor after the oven - before your destacker if you have one. The rest of it, depends on how long li
Electronics Forum | Tue Apr 25 09:16:36 EDT 2017 | ttheis
We built a line consisting of: BBL--PRINTER--CONV--PNP--CONV--PNP--CONV--OVEN Conveyor between each machine allows quick visual inspection or if a pnp is down for maintenance (or not needed) we can manually move boards around the down machine easil
Electronics Forum | Thu Apr 20 03:50:35 EDT 2017 | cromaclear
To overcome the dewetting issues of the past, a number of techniques have been used such as alternating directions on the wetted nozzle; this helps to avoid the solder biasing to one side causing the other side to oxidize and de-wet. Another method o
Electronics Forum | Mon May 01 12:32:50 EDT 2017 | emeto
Looks like you have bad wetting. I will do in this order as it is easier to troubleshoot starting with the machine and transitioning to the PCB: 1. First clean some bare PCBs really good and try again. 2. Check thermal profile 3. Check flux - amount
