Electronics Forum | Tue Sep 11 19:04:28 EDT 2007 | hakerem
Hi Shrek - Not sure why you think adjusting dwell time and preheats is a sales pitch, but I do appreciate your candor. These are proven, widely used techniques for attacking, eliminating and preventing the recurrence of blowholes. Since it is so ea
Electronics Forum | Fri Dec 16 08:00:26 EST 2005 | jax
What you are most likely dealing with: Insufficient Pure Sn layer ( multiple causes ) Because elevated temperatures accelerate the diffusion process, the thickness of the Pure Sn layer will reduce during every thermal cycle... ( bakeing PCBs, S
Electronics Forum | Fri Jul 09 06:51:46 EDT 2010 | cobar
Try titanium edge stiffners on the PCB before making solder pallets.
Electronics Forum | Thu Jul 01 11:48:10 EDT 2010 | mb_mfg
Sid, Try baking the boards before running, to insure no moisture. Baking out the moisture will help prevent warping. Should you need further assistance, we supply fixtures to force the board to stay flat to reduce to thermo shock during wave solde
Electronics Forum | Tue Jun 29 14:44:26 EDT 2010 | rgduval
There are some good suggestions here...reflow pallets, and copper balancing. We would also suggest verifying that your problem is not caused by moisture. How much time passed between first side and second side reflow, and how humid is the environme
Electronics Forum | Fri Jun 18 17:36:10 EDT 2010 | sid
Good afternoon all, I have been trying to find a solution to a defect I just noticed. After stencil printing and smt part placement on the secondary side of my boards, I run them through a wave soldering system. All my components got soldered perfe
Electronics Forum | Tue Nov 29 08:50:39 EST 2005 | pjc
Band width relates to conveyor speed to achive a 2 second contact time for Sn/Pb wave soldering. A typical conveyor speed is 150cm/min with a band width (contact band width between PCB and solder) of 5cm. Now for Pb-Free wave soldering a longer conta
Electronics Forum | Wed Oct 11 22:23:39 EDT 2006 | billwestiet
I've installed a number of these machines here in the US, several of them with VOC free applications. I would need to get a bunch of questions answered before I could make any suggestions: What is the pcb width? length? conveyor speed? flow rate (mm
Electronics Forum | Tue Jul 06 05:00:33 EDT 2010 | smthexi
Hello Sid: i don't know where you bought the machine. the central support system is an addition part, it is specially designed to prevent the PCB board from bowing. i know that the wave soldering machine which made before did not include this useful
Electronics Forum | Sat Nov 26 05:55:04 EST 2005 | milroyperera
Hi, Does any body have the experience with wave soldering a "Gold" plated PCB with SMD assembled on it? I`m experiencing massive bridging,icicles,Shadowing & Skipping. The present soldering angle is 6 deg:,pre heating rate is 2 deg/sec , Dwell time
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