Electronics Forum | Fri Mar 29 11:02:04 EDT 2019 | robl
Not sure it's always a great route as the smaller ovens are going to struggle to get a perfect profile for a consistent result, especially on bigger boards with higher layer counts and mixed technology. You may want to take a quick look at a batch va
Electronics Forum | Mon Apr 15 10:32:23 EDT 2019 | slthomas
Just a comment on the Heller 1500. We had 3 at a previous workplace where we never made the Pb-free transition (this was early 2000's). The ovens we had were not designed for and were never used for Pb-free processing yet every one of them had all o
Electronics Forum | Wed Feb 23 17:39:11 EST 2005 | Austinj
I am most familiar with Heller (10 yrs. of 1088 4 zone - 1800 8 zone ovens) and find them to be very reliable. Other Manufacturers may have five zone ovens on the used market. (I used Petlock as an example because you could get data sheets/specs from
Electronics Forum | Sat Jul 13 11:14:55 EDT 2019 | SMTA-Richard
Yes, it is time and temperature, but it is also speed and distance. Even though you can run a longer machine faster, the boards have a longer distance to travel and you do too, so the cycle time per board may not improve be reduced as much as you th
Electronics Forum | Wed Jul 03 10:50:06 EDT 2019 | rgduval
An 8 zone oven will give you better thermal control over the whole process. It's useful for lead-free soldering, or for boards with varying thermal loads/shadowing, etc. You can make a 5 zone work for lead free, provided the boards don't have signi
Electronics Forum | Thu Apr 15 11:53:37 EDT 2004 | Claude_Couture
Hi everyone, Our QC manager is bugging me about calibrating the TC readings on our reflow ovens. I keep telling him that doing a regular reflow profiling with a mole is sufficient to see if the oven temperature are normal. The manuals state that TC c
Electronics Forum | Fri Apr 16 07:34:10 EDT 2004 | Claude_Couture
Ken, thanks for your answer, it is much better presented than what I was fed by our qc. By "calibrating TCs" I meant the readings the controller is displaying on the screen. So that would be the converter that we would check and calibrate. Thank you
Electronics Forum | Tue May 29 09:36:24 EDT 2007 | davef
oxygen sensor instrumentation Amoung the oxygen monitor suppliers that tailor themselves to reflow machines are: * MapCheck 9000 Process Oxygen Monitor [Topac; 231 CJC Hwy, Suite 103 Cohasset MA 02025; 781-740-8778 F781-740-8779 topac.com sales@topa
Electronics Forum | Fri Dec 03 03:58:12 EST 1999 | Wolfgang Busko
Hi Charly, For batch ovens there is no discussion. For inline loading interval depends on the oven you use, the amount of heat the PCB takes out of the zone and the capability of the oven to get it back in. The approximate time for the PCB to stay i
Electronics Forum | Fri Dec 03 18:27:09 EST 1999 | Dave F
Charley: As Wolfgang says, you're unlikely to be able to put enough (average) boards in a modern reflow oven to be able to thermally load the machine. Ta Dave F
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