Precautions For Welding

PRECAUTIONS FOR WELDING

1. REMOVAL OF ADJACENT COMPONENTS







a. To prevent damage to the body and parts, apply protective tape to the body and tools before removing the parts.

NOTICE: If the paint film is damaged, make sure to refinish the paint.

2. CUTTING WORK







a. When cutting a panel, be careful not to damage the surrounding panels or any panels underneath.

NOTICE: If any panels are damaged, be sure to repair them.

3. ANTI-RUST TREATMENT BEFORE WELDING







a. Apply welding primer to the contact surfaces of the welding areas to protect them from rust.

NOTICE: Do not apply welding primer outside of the contact surfaces.

4. WELDING WORK

a. Follow the welding conditions below when welding ultra high strength steel to assure sufficient weld strength.










When welding 2 panels together including 1500 MPa ultra high strength steel.







When welding 2 panels together including 980 MPa ultra high strength steel.







NOTICE: Be sure to use Metal active gas (Ar 80% + CO2 20%) as the shield gas when plug welding. Sufficient weld strength cannot be assured when using 100% CO2 shield gas.










When welding more than 3 panels together including 1500 MPa or 980 MPa ultra high strength steel. (When plug welding a third panel to 2 panels which are welded under the conditions described above.)







NOTICE: Be sure to use Metal active gas (Ar 80% + CO2 20%) as the shield gas when plug welding. Sufficient weld strength cannot be assured when using 100% CO2 shield gas.

b. Standard Number of Welds







NOTICE: Inspect the welds after spot welding. For points with insufficient weld strength join the panels using plug welds.

c. Spot weld locations










Avoid welding over previously welded areas.

5. MAKING HOLES FOR PLUG WELDING










a. For areas where a spot welder cannot be used, use a puncher or drill to make holes for plug welding.