Electronics Forum | Fri May 07 16:24:08 EDT 2004 | bruce @ knoll
I did have my solder analyzed and it is clean. The Hollis preheat coils are a bit hard to control but I have measured the board top side and I am getting a temp of 105c just before wave contact. I would like to move to a spray fluxer but I am going
Electronics Forum | Mon Apr 12 10:39:48 EDT 2004 | Ron Herbert
Correct preheating of the assembly is critical. Check with your flux manufacturer regarding the recommended topside pcb temperature as it enters the first wave. It is important that this temperature be achieved without burning the flux on the bottom
Electronics Forum | Wed Apr 14 20:48:43 EDT 2004 | Ken
Just a thought.... Some Fluxes require temperatures upto 260F (127C). Are you using water based flux or solvent (alcohol). I have noticed that many wave machines are NOT capable of preheating adequately when using water based materials. This can
Electronics Forum | Wed Jun 18 10:42:07 EDT 2003 | caldon
Frank- Dreamsniper touched on something I totally forgot about....DROSS.....This is a subtle way for $$$$ to be lost. If it is silver and Shiney...it does not belong in the dross recycle bin. That is good Solder being tossed. You can also add into
Electronics Forum | Tue Jun 10 16:51:19 EDT 2003 | davef
Develop your recipe wave soldering exactly as you developed your recipe for reflow soldering. The only difference is that instead of using your paste supplier's recommendations as the starting point, use your flux supplier's recommendations as a bas
Electronics Forum | Thu May 06 19:13:24 EDT 2004 | Greg York
Watch your dwell time especially if larger components. Problem is normally associated with lower temp as well as insufficient flux coverage with larger massed boards or ground planes. Try to hand spray a board to check that fluxer operation is OK. If
Electronics Forum | Wed Jun 18 19:26:39 EDT 2003 | gregoryyork
Rules of thumb :- 1. Never over flux - not necessary and waste's money. Never top flux neither 2. Top Board temp. around 70C - 105C or there about's pending what laminate you use. Obviously the more flux you apply the higher heat required/denser PC
Electronics Forum | Wed Dec 20 04:43:36 EST 2006 | greg york
Any decent flux would volatise off with the heat of the wave unless absorbed into the solder mask. Test this by trying to clean in alcohol or common solvent aerosol, if it does not clean then it is probably Mineral Salts from solder mask fillers. Ano
Electronics Forum | Wed May 12 12:11:54 EDT 2004 | solderpro
Bruce, regards to all who are trying to help and have great input, with those type of lead length, I would be very impressed to see you get rid of the problem, and as the others said, no clean in a foam fluxer, not good but workable.... the real issu
Electronics Forum | Wed May 12 08:27:43 EDT 2004 | solderpro
woow, looks like I need to go back on the road... you all have great info. but what happen to asking what type of machine do they currently use, what is the configuration of the machine, what type of flux are we using, are running single sided or dou
