Electronics Forum | Tue Nov 09 17:26:13 EST 1999 | Dave F
Horace: You weren't real specific about the set-up of the two machines. So what's the diff man?? Big dross generators are: 1 R Woodgate says that pump speed is the biggest driver to dross production 2 Chrys uses low dross cast bar: Alpha HiFlo 3
Electronics Forum | Tue Nov 09 23:52:31 EST 1999 | chartrain
Could very well be your nitrogen diffusers are blocked. These have to be cleaned on a regular basis as well.Cleaning frequency for the diffusers is flux dependent as well as other factors but could be as little as one month of operation. Once the dif
Electronics Forum | Thu Nov 11 11:03:40 EST 1999 | Andy C.
Horace , We had a similar problem last year on an Ultra 2000 . We cured it by draining the pot , removing the wave forming ducts , pumps and nozzles and cleaning . Refill with fresh solder ( one third solder chips , two thirds solder bars - to get t
Electronics Forum | Tue Nov 09 11:42:37 EST 1999 | Dave F
Jeff: Try this: ROSA. John�s spot on. I�ll add that it is a fluxless method that reduces the oxides in an aqueous solution. Another source of information is: Trench, M., Hillman, D., Lucey, G., "Environmentally Friendly Closed Loop Soldering,"
Electronics Forum | Fri Nov 05 21:22:34 EST 1999 | chartrain
Amazing in today's technology that people still bake because "that's the way we've alawys done it". Baking is a band aid for poor manufacturing of the PCB. Moisture can become trapped between the layers during buildup. This moisture when it contacts
Electronics Forum | Fri Nov 05 14:00:07 EST 1999 | John Thorup
You know, Rich - if the only problem with your present method of delivery is that the container runs dry and the pump sucks air you can add a non-invasive low level alarm quite simply and for about $100. A suitable adjustable sensitivity capacitive
Electronics Forum | Fri Nov 05 21:29:56 EST 1999 | chartrain
No matter what type container you use, air in the delivery line will always be a problem. When you pop the lid on a pressurized container, fill it with a liquid and reseal it, air will be present over the liquid. Where do you think it goes?It has to
Electronics Forum | Fri Nov 05 21:41:46 EST 1999 | chartrain
Temperature vs time is what soldering is all about. The faster you run your conveyor, the more heat will have to come from the pot for a given assembly. Example: You heat the board to 200F top side through the preheaters. Eutectic 63/37 melts at 361.
Electronics Forum | Thu Nov 04 11:20:48 EST 1999 | Brian
Hi, all! I've been away in the USA for 10 days and, coming back, I find that various questions which I had asked of the staff at SMTnet had been totally ignored. I have therefore taken the decision to resign from the Editorial Board of SMT Express a
Electronics Forum | Thu Nov 04 17:33:24 EST 1999 | John Thorup
Yes, the Moon has set. Final signoff was 10.1.99 and several threads appearing in the previous 10 days or so sort of say why. List by author to check. I was out for most of this period and missed it as well. I went looking after Brian's post. I
