WORK NOTICES AND PRECAUTIONS PRECAUTIONS FOR WELDING

REMOVAL OF ADJACENT COMPONENTS

1. 

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

   Note:

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

ANTI-RUST TREATMENT BEFORE WELDING

1. 

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

   Note:

   Do not apply welding primer outside of the contact surfaces.

WELDING WORK

1. 

   *a	1500 MPa or 980 MPa Ultra High Strength Steel

   

   *a	1500 MPa or 980 MPa Ultra High Strength Steel

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

   Table 1. When welding 2 panels together including 1500 MPa or 980 MPa ultra high strength steel.

   Spot weld	Pressure		2940 N (300 kgf, 661 lbf)
   	Weld current		10000 A
   	Weld time	ROCKER PANEL(See the body weld point)	16 Cyc.(0.27 Sec.)
   Plug weld	Plug diameter		10 mm (0.39 in.)
   	Wire type		AWS A5.18 ER70S-3
   	Shield gas		Metal active gas

   Note:

   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.

   Table 2. 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.)

   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% + CO₂ 20%) as the shield gas when plug welding. Sufficient weld strength cannot be assured when using 100% CO₂ shield gas.

2. Standard Number of Welds

   Number of spot welds	980 MPa ultra high strength steel	More than the number of welds made by the manufacturer
   	Normal steel or high strength steel	More than 1.3x the number of welds made by the manufacturer
   Number of plug welds	1500 MPa or 980 MPa ultra high strength steel	More than the number of welds made by the manufacturer
   	Normal steel or high strength steel

   Note:

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

3. 

   *a	Old Spot Locations
   *b	New Spot Locations

   Spot weld locations

   Avoid welding over previously welded areas.