| ??? 11/29/09 10:10 Read: times |
#171303 - I guess thore are wire type Responding to: ???'s previous message |
Kai Klaas said:
Ap said:
Is that you encountered uneven thermal profiles in Chinese make ? I only experimented with an oven for household applications (Pizza, Hawai-Toast,...) and found, that the four heating elements (two at the top and two at the bottom) produced a highly uneven temperature profil. I tested it, by putting some blobs of solder paste at different locations on a PCB. A proper temperature sensor mounted at the center of PCB showed me that heating time and end temperature wasn't the problem. But the blobs weren't reflowing at the same time! Some of them showed a reflow delay of more than 1 min! That was the moment, when I realized, that reflow soldering by the help of a such an oven might not be that simple... Kai Klaas Hi Kai , How about replacing those heating wire type elements(I guess as mine matches closely to yours with 4 helical wires at each corner) with 500W 2 nos quartz radiators on the top? quartz can provide good ramps both upside and low side. I read somewhere manufacturers were using ceramic elements on top maybe ceramic heater is better than quartz or vice versa. Regards -Ap |
| Topic | Author | Date |
| Reflow oven | 01/01/70 00:00 | |
| I have experimented a bit... | 01/01/70 00:00 | |
| not an answer, but | 01/01/70 00:00 | |
| That depends | 01/01/70 00:00 | |
| Which kind? | 01/01/70 00:00 | |
| bench models | 01/01/70 00:00 | |
| Benchtops and cost efficacy | 01/01/70 00:00 | |
| It looks cool | 01/01/70 00:00 | |
| Heat distribution/circulation | 01/01/70 00:00 | |
I disagree | 01/01/70 00:00 | |
| No, a tiny Pizza oven... | 01/01/70 00:00 | |
| I guess thore are wire type | 01/01/70 00:00 | |
| Ceramic heaters | 01/01/70 00:00 | |
| Sorry, mine's German | 01/01/70 00:00 | |
| elector stuff | 01/01/70 00:00 |