Reflow Oven: Difference between revisions

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Because modern electronics components are tending more and more towards becoming SMD-only, and because the associated size reduction can also be very useful for space projects, [[User:Smeding|smeding]] has decided we need a reflow oven.
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'''Deze reflowoven is niet meer op de space. Werkte niet goed genoeg en nam veel ruimte in. Wie doet 'n voorstel voor een goede vervanging?
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== Donators ==
{{Project
The current direction the project seems to be going (buying a new oven and modding it) we are going to need a little more funds than I can provide on my own. 100 EUR should be more than enough to cover everything, to give an idea of the funds needed. Better budget will come when decisions and designs are finalised.
|Name=Reflow Oven
|Picture=Reflowoven.jpg
|Omschrijving=
|Status=Completed
|Contact=Crashjuh
}}


== Oven ==
Because modern electronics components are tending more and more towards becoming SMD-only, and because the associated size reduction can also be very useful for space projects, we need a reflow oven.
Haven't hunted around that much, but current best choice seems to be [[http://www.block.nl/article/getArticleDetails?artNr=83550 this]]. Feel free to add suggestions.


We probably want the following from an oven:
== Status ==
* Small volume: 15L-ish
* High power: 2kW-ish, preferrably top and bottom elements
* With exhaust fan if possible, as we'd need one anyway


== Controller ==
We now have a real reflow oven and currently we are testing what the best settings are.
To be constructed. Will probably consist of a large triac to switch the heating element and a fan on and off in a control loop with a thermocouple.
Over time, these data are reported here.
We still need a decent fan to speed up the cooling phase. Needs to be able to withstand rather high temperatures, something from an oven would be ideal.
 
The particular model we have looks like a DIMA SMT Systems SMRO-0170 (to be confirmed).
In [http://www.neikorea.com/download/DIMA_catalog.pdf this document] is it referred to as the "Piccolo", with a maximum PCB size of 250x150mm.
 
== Use by Revspace ==
 
When you turn it on (switch on the back), it will heat according to the temperatures specified in the currently selected program. Once it's done, you can hit 'start'. The tray will then move all the way to the right (preheat area), wait for a specified period of time, then move to the left (solder area), wait for a period of time, and then finish by moving further to the left (out of the oven). The light will turn on while the tray is inside, so you can check the reflow as it happens.
 
It makes a lot of noise and produces quite a bit of heat, so probably best to turn on the external extractor fan.
 
The oven has 10 memory locations (Program number 01 till 10).
At the moment we only have programmed program number 01.
We program the programs for different PCB thicknesses.
 
To pick the program: press 'Prog' and use the plus/minus keys to choose a program number, then press 'Prog' again.
 
To change a program (make sure to CHECK against the settings below): press 'Prog', pick the program number, then use left/right to step through the settings, and plus/minus to change each setting.
 
The "self-learning" stuff supposedly lets you automatically work out the correct profile with the use of sensors, but we have no documentation and it seems unnecessary.
 
{|
! Program number !!!! PCB Thickness
|-
| 01 |||| 1.5 / 1.6 mm
|-
| 02 |||| xx
|-
| 03 |||| xx
|-
| 04 |||| xx
|-
| 05 |||| xx
|-
| 06 |||| xx
|-
| 07 |||| xx
|-
| 08 |||| xx
|-
| 09 |||| xx
|-
| 10 |||| xx
|}
 
 
* Program number: <br />Enter : 01
::: Preheat standby: <br />Enter : 080
 
::: Preheat airtemp: <br />Enter : 150
 
::: Preheat time: <br />Enter : 02:00
 
::: Solder temp. :<br />Enter : 250
 
::: Solder time: <br />Enter : 01:30
 
::: Learn preheat: <br />Enter : 000
 
::: Learn solder: <br />Enter : 000
 
 
== Gallery ==
 
I2C Led driver breakout board, D1 was hand-soldered. Solder paste was applied using a Mylar stencil cut with the revspace lasercutter.
[[File:Reflow_ht16k33.jpg|640px]]
(Image: robv)

Latest revision as of 17:19, 7 May 2022

Deze reflowoven is niet meer op de space. Werkte niet goed genoeg en nam veel ruimte in. Wie doet 'n voorstel voor een goede vervanging?


Project Reflow Oven
Reflowoven.jpg
Status Completed
Contact Crashjuh
Last Update 2022-05-07

Because modern electronics components are tending more and more towards becoming SMD-only, and because the associated size reduction can also be very useful for space projects, we need a reflow oven.

Status

We now have a real reflow oven and currently we are testing what the best settings are. Over time, these data are reported here.

The particular model we have looks like a DIMA SMT Systems SMRO-0170 (to be confirmed). In this document is it referred to as the "Piccolo", with a maximum PCB size of 250x150mm.

Use by Revspace

When you turn it on (switch on the back), it will heat according to the temperatures specified in the currently selected program. Once it's done, you can hit 'start'. The tray will then move all the way to the right (preheat area), wait for a specified period of time, then move to the left (solder area), wait for a period of time, and then finish by moving further to the left (out of the oven). The light will turn on while the tray is inside, so you can check the reflow as it happens.

It makes a lot of noise and produces quite a bit of heat, so probably best to turn on the external extractor fan.

The oven has 10 memory locations (Program number 01 till 10). At the moment we only have programmed program number 01. We program the programs for different PCB thicknesses.

To pick the program: press 'Prog' and use the plus/minus keys to choose a program number, then press 'Prog' again.

To change a program (make sure to CHECK against the settings below): press 'Prog', pick the program number, then use left/right to step through the settings, and plus/minus to change each setting.

The "self-learning" stuff supposedly lets you automatically work out the correct profile with the use of sensors, but we have no documentation and it seems unnecessary.

Program number PCB Thickness
01 1.5 / 1.6 mm
02 xx
03 xx
04 xx
05 xx
06 xx
07 xx
08 xx
09 xx
10 xx


  • Program number:
    Enter : 01
Preheat standby:
Enter : 080
Preheat airtemp:
Enter : 150
Preheat time:
Enter : 02:00
Solder temp. :
Enter : 250
Solder time:
Enter : 01:30
Learn preheat:
Enter : 000
Learn solder:
Enter : 000


Gallery

I2C Led driver breakout board, D1 was hand-soldered. Solder paste was applied using a Mylar stencil cut with the revspace lasercutter. Reflow ht16k33.jpg (Image: robv)

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