Follow the welding conditions below when welding ultra high strength steel to assure sufficient weld strength. (When repairing this model)
*1: When welding 2 panels together including 980 MPa ultra high strength steel.
| Plug weld | Plug diameter | 10 mm (0.39 in.) |
| Wire type | AWS A5.18 ER70S-3 | |
| Shield gas | Metal active gas |
*2: When welding more than 3 panels together including 980 MPa ultra high strength steel. (When plug welding a third panel to 2 panels which are welded under the conditions described above.)
| Plug weld | Plug diameter | Same as the standard method (See the introduction) |
| Wire type | AWS A5.18 ER70S-3 | |
| Shield gas | Metal active gas |
Note
Be sure to use Metal active gas (Ar 80% + CO220%) as the shield gas when plug welding. Sufficient weld strength cannot be assured when using 100% CO2shield gas.
REMOVAL
| Symbol meaning | |
|---|---|
|
Remove Weld Points |
|
Cut and Join Location |
|
Cut Location for Supply Parts |
REMOVAL POINT
*3 is reused.
Do not butt weld or heat repair because the heat decreases the strength of areas where ultra high strength steel is used. (See the introduction)
INSTALLATION
| Symbol meaning | |
|---|---|
|
Plug Weld |
|
Cut and Join Location |
|
Butt Weld |
INSTALLATION POINT
Inspect the fitting of the related parts around the new parts before welding. This affects the appearance of the finish.
Temporarily install the new parts and measure each part of the new parts in accordance with the body dimension diagram. (See the body dimensions)
If the entire supply part is not needed, remove the part of the supply part that is needed.
Follow the welding conditions when welding *1 and *2 to assure sufficient weld strength. (See the introduction)
Before temporarily installing the new parts, weld the center body pillar reinforce sub-assembly upper and center body pillar inner with the standard number of welding points.
After welding the center body pillar reinforce sub-assembly upper and center body pillar inner to the vehicle side, install the center body pillar outer and *3.
After welding, apply the foamed sealing material to the corresponding parts. (See the painting / coating)
After applying the top coat, apply anti-rust agent to the internal panel portion of the closed section structural weld points.