Electronics Forum | Sun Jun 10 21:18:06 EDT 2001 | ianchan
Hi Guys, Thanks for the tips, will try it on next run. Regards, ianchan :)
Electronics Forum | Tue Jun 12 09:30:42 EDT 2001 | Rob Fischer
I assume the material you are using is black. This may sound far fetched but try using a lighter color material. Going from black to gray has given users as much as fifteen degrees F. less in heat loss.
Electronics Forum | Tue Jun 12 11:28:30 EDT 2001 | CPI
Rob: Wouldn't that only apply to IR ovens. If using a true convection oven the color of the material wouldn't hinder output at all "Right". Don�t want to see someone spend money on new tooling if unnecessary.
Electronics Forum | Thu Jun 14 01:04:57 EDT 2001 | procon
Ian, It appears to me you are trying to reflow the star wars project. All this talk about thermal absorbtion, heat differential, etc., it' only a reflow profile? If you read back over the suggestions of all other memos, you will find the solution.
Electronics Forum | Sat Jun 09 09:32:26 EDT 2001 | davef
Yes, your pallet will absorb / steal heat. It sounds like you are doing a good job in understanding the issues. Yes, the pallet could be the problem. Is this a new run that you are starting? Or has everything been OK, but recently you've begun to
Electronics Forum | Thu Jun 14 01:29:33 EDT 2001 | ianchan
Hi mate, thanks for the "starwars project" irk, it sort of sets my rump on track to "lah-lah-land", i need help here, coz this fric'kin pcba, is going onto a control panel, for a governmental fighter jet, ianchan / QA 14 june 2001
Electronics Forum | Thu Jun 14 10:50:49 EDT 2001 | slthomas
I must be missing something.....why can't you simply attach thermocouples, profile the assembly, and adjust your zones as required to reach the parameters required by your paste and component specifications? Is there a restriction on that process fo
Electronics Forum | Sun Jun 10 12:30:10 EDT 2001 | procon
Is this a Convection Oven or IR? If convection, you can increase the air velocity in the zones if the oven has this ability. You should do as Dave has explained. If you must use pallets when reflowing your components, you need to profile in the same
Electronics Forum | Tue Jun 12 20:36:00 EDT 2001 | ianchan
Hi mates, thanks for the interest on this topic, just to share info to clarify any queries : 1) am using light blue-grey materials for the Pallet 2) am using Hot Air Convection Reflow Oven 3) I suspect its due to the Pallet materials properties, t
Electronics Forum | Tue Jun 12 20:59:14 EDT 2001 | ianchan
Hi mates, actually my whole problem, is whether to : 1) To offset the heat-absorb ability of the Pallet, that artifically lowers my pcba temperature, is it advisable to artifically increase the overall, oven zone temperatures? offset by estimated +
