Electronics Forum: foaming (Page 26 of 34)

Re: Spray Fluxers

Electronics Forum | Wed Mar 17 12:19:53 EST 1999 | Scott Cook

| Does anyone have any recommendations on spray fluxers? Are there major differences between the high priced ultrasonic machines to the low priced flux/air spraying machines? We are going to be spraying an OA flux with 11% solids content. Are there a

Wave Solder balls

Electronics Forum | Mon Nov 02 09:44:21 EST 1998 | Michael Nguyen

Well my process is I'm running my belt speed at 3.50fpm and about 215 to 225 degrees top side. I got my main wave down to a little less than half the board thickness. I'm not using a hot air knife cause we thought it might create more of a problem th

Re: Cleaning PCB'S after rework ect.

Electronics Forum | Thu Sep 03 01:34:24 EDT 1998 | John Kirby

| | Could someone please help me. We clean our PCB's with Safewash at present. As most of our work has to be upto MIL-STD, we cannot clean the PCB when transformers are fitted? Could someone please help???? | | Thank you | | J Kirby | J, | You have

Re: Cleaning PCB'S after rework ect.

Electronics Forum | Tue Sep 01 23:13:22 EDT 1998 | MIKE

| | Could someone please help me. We clean our PCB's with Safewash at present. As most of our work has to be upto MIL-STD, we cannot clean the PCB when transformers are fitted? Could someone please help???? | | Thank you | | J Kirby | J, | You have

Re: Wave Solder Flux Out With The Old & In With The New

Electronics Forum | Tue Jul 14 15:02:38 EDT 1998 | Brian Conner

Dave: Wayne is correct with his analysis of ultrasonic spraying - we also use Sonoteks. However, your post didn't ask for a different system, just a clarification regarding your problem. What type of flux system are you currently using - spray, f

Solder Balls @ the Wave Solder Process

Electronics Forum | Sun Dec 09 22:54:20 EST 2001 | dburr

It sound you have already discovered to root cause, flux entrapment in the via holes. Short of changing the desing, here are sone suggestions. The main thing is you have to dry out the via holes of the wet flux. Some things to try are: slow down t

Wave solder question

Electronics Forum | Tue Feb 19 14:00:55 EST 2002 | global

We have had some discussions about what causes parts to lift out of the holes when going over the wave on our flow solder machine. The machine being used is a Treiber (700 series). There are two bottom pre-heaters and one top pre-heater. We try to pr

Stencil Cleaner

Electronics Forum | Thu Mar 28 13:25:43 EST 2002 | Mike Konrad

Hi Dave, No-clean paste is more difficult to remove in post-reflow cleaning applications. In stencil, misprint and tool cleaning applications however, no-clean paste poses no extra degree of cleaning difficulty. There are few special requirement

Preheating a board with metalic coating on both sides

Electronics Forum | Wed Jul 31 17:25:39 EDT 2002 | sueph

Dave, thanks for the reply. These boards have metal plating covering 99 percent of both primary and secondary surfaces. The only places without the metal plating are the extreme outer edges and about an 1/8 inch surrounding the plated holes. We do

Cardboard Box Design

Electronics Forum | Tue Oct 15 12:07:55 EDT 2002 | kenbliss

Hi Jason First, I would not use real parts to test. Second talk to your cardboard box supplier they should be able to advise you on this, they should have the test results from the box capacities they sell to start with. Are you using this tote bo


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