WORK NOTICES AND PRECAUTIONS > PRECAUTIONS FOR WELDING |
REMOVAL OF ADJACENT COMPONENTS |
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To prevent damage to the body and parts, apply protective tape to the body and tools before removing the parts.
ANTI-RUST TREATMENT BEFORE WELDING |
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Apply welding primer to the contact surfaces of the welding areas to protect them from rust.
WELDING WORK |
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Follow the welding conditions below when welding ultra high strength steel to assure sufficient weld strength.
*1 | 980 MPa Ultra High Strength Steel |
Spot weld | Pressure | 2940 N (300 kgf, 661 lbf) |
Weld current | 10000 A | |
Weld time | 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 |
*2 | 980 MPa Ultra High Strength Steel |
Plug weld | Plug diameter | Same as the standard method (See the introduction) |
Wire type | AWS A5.18 ER70S-3 | |
Shield gas | Metal active gas |
Standard Number of Welds
980 MPa ultra high strength steel | Number of spot welds | More than the number of welds made by the manufacturer |
Number of plug welds | More than the number of welds made by the manufacturer | |
Normal steel or high strength steel | Number of spot welds | More than 1.3x the number of welds made by the manufacturer |
Number of plug welds | More than the number of welds made by the manufacturer |
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Spot weld locations
*1 | Old Spot Locations |
*2 | New Spot Locations |
MAKING HOLES FOR PLUG WELDING |
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*1 | Puncher |
For areas where a spot welder cannot be used, use a puncher or drill to make holes for plug welding.
Thickness of welded portion | Diameter of plug hole |
Under 1.0 mm (0.04 in.) | Over 5.0 mm (0.20 in.) |
1.0 to 1.6 mm (0.04 to 0.06 in.) | Over 6.5 mm (0.26 in.) |
1.7 to 2.3 mm (0.07 to 0.09 in.) | Over 8.0 mm (0.31 in.) |
Over 2.4 mm (0.09 in.) | Over 10 mm (0.39 in.) |