 
| Mime-Version: |
1.0 |
| Content-Type: |
text/plain; charset=US-ASCII |
| Old-Return-Path: |
|
| Date: |
Mon, 30 Jun 97 09:27:43 -0500 |
| From [log in to unmask] Wed Jul 2 08: |
27:14 1997 |
| Precedence: |
list |
| >From buetmi Mon Jun 30 09: |
33:29 1997 |
| Resent-Sender: |
|
| Content-Transfer-Encoding: |
7bit |
| Status: |
O |
| X-Mailing-List: |
|
| TO: |
|
| Return-Path: |
<TechNet-request> |
| X-Status: |
|
| X-Loop: |
|
| Resent-Message-ID: |
<"ZZjwL2.0.8OJ.nEyjp"@ipc> |
| Subject: |
|
| From: |
|
| Resent-From: |
|
| Received: |
by ipc.org (Smail3.1.28.1 #2)
id m0wihW7-000BjgC; Mon, 30 Jun 97 09:33 CDT |
| X-Mailer: |
ccMail Link to SMTP R6.00.01 |
| Message-Id: |
|
| Parts/Attachments: |
|
|
Rob:
Dover Soltec has a center wire support on their new Delta wave solder
system which will allow processing of boards through the wave without
fixturing. I have processed boards at Soltec labs up to 18" wide with
only a stiffner and this center support wire. We also processed
boards with large bottom side tantalum capacitors, chip resistors and
capacitors, and two SOICS which were mounted 90 degress off from
optimum. We ran the boards to accomodate the SOICS from bridging and
because of the chip wave, smart wave and main wave
configuration/design we had a zero defect board. I believe others,
Electrovert and SEHO, have the center support wire as well. I have
experience with only Soltec. We purchased one of their new Delta Wave
Systems.
[log in to unmask]
RON
______________________________ Reply Separator _________________________________
Subject: Wave Solder
Author: <[log in to unmask]> at INTERNET
Date: 6/27/97 2:09 PM
Thanks for the info on profiling pcb's. It helped me confirm that the process
of profiling that I am using is typical. Another question, I am being
approached to figure out a way to run pcb's through the solder wave that have
widths of 8" or greater without titanium stiffeners or pallets. I don't believe
it can be accomplished from my personal experience. There will always be bowing
of the board through the solder wave process. Due to the bowing of the board,
the speed of the waves would have to be lowered. By doing this, smt parts on
the bottom side along the conveyor edges would have quite a few of no solders.
Any help in this area would be appreciated.
Rob
***************************************************************************
* TechNet mail list is provided as a service by IPC using SmartList v3.05 *
***************************************************************************
* To subscribe/unsubscribe send a message <to: [log in to unmask]> *
* with <subject: subscribe/unsubscribe> and no text in the body. *
***************************************************************************
* If you are having a problem with the IPC TechNet forum please contact *
* Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] *
***************************************************************************
***************************************************************************
* TechNet mail list is provided as a service by IPC using SmartList v3.05 *
***************************************************************************
* To subscribe/unsubscribe send a message <to: [log in to unmask]> *
* with <subject: subscribe/unsubscribe> and no text in the body. *
***************************************************************************
* If you are having a problem with the IPC TechNet forum please contact *
* Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] *
***************************************************************************
|
|
|
