Body/Frame - MIG Welding Requirements
Date: July 2007
Order No.: P-B-60.00/17
Group: 60
SUBJECT:
MODELS 203, 204, 208.3, 209.3, 210, 211, 216, 219, 220, 221
2000 Mercedes Benz CLK 320 (208.365) V6-3.2L (112.940) Page 319
MIG Soldering
A. Soldering Materials for MIG Soldering
For strength reasons soldering material SG-CuAL8 (recommended wire diameter: 1.0 mm) must be used when performing MIG soldering of
connections to structural components (as described in the WIS).
The soldering material SG-CuSi3 must be used in the case of joining methods on outer paneling parts which are then to be reworked using
body solder. The soldering material SG-CuAL8 cannot be used here as it would not bind properly with the body solder on account of the
aluminum component in the soldering material.
Note:
Refer to WIS AH60.00-P-0024-01N for general notes on repair of vehicles with ultra-high-strength steel
B. MIG Soldering on structure components and outer paneling
On models 204, 216 and future models MIG soldering is a joining process on structure components and on exterior paneling in production. On
model 204 in the case of repair the MIG solder connections on structure components (Figure 2) are joined by a MAG weld joint. In the
process it is mandatory to observe the repair instructions in WIS.
On outer panelings (side paneling) MIG soldering can also be performed as an alternative to MAG [metal active gas] welding. For this
purpose the solder material Sg-CuSi3 must be used so that following adhesion and/or rework with unleaded tin-wash solder is ensured.
Changeover on current models:
In series production the MAG weld joint is successively replaced by a MIG-solder connection. In the process it is mandatory to observe the
corresponding repair instructions in WIS.
Outlook on new models:
On future models MIG soldering will be introduced in production as a joining method on structure components and on outer paneling. MIG
soldering will be a standard repair method on new models.
Workshop equipment:
A selection of MIG/MAG welders from various manufacturers is documented in SSEP on Star TekInfo.
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