Spot Welding - Spot Welding Conditions for Ultra High-Strength Steel Parts (1180 & 1500 MPa)

The welding conditions (condition numbers and setting descriptions) for the spot welding positions including ultra high-strength steel (1500MPa/ 1180MPa) positions are described in “Installation” and “Replacement” in section 3 of model specific body repair manual. Always refer to the welding conditions to help ensure adequate weld strength.

NOTE:
For spot welding positions excluding high-strength steel (1500MPa/1180MPa), confirm the sheet thickness, tensile strength and existence of the zinc treatment of both sides, and set the welder to confirm to the welding conditions by referring to “Body Parts Construction” of “General Information” in section 1 of the model specific body repair manual.
For the actual settings of the welder, refer to the specifications supplied by the welder manufacturer.

Spot welding conditions
Condition
No.
Welding
current
A
Welding
time
ms
Applied
force
N (kgf)
Condition
No.
Welding
current
A
Welding
time
ms
Applied
force
N (kgf)
1
6500
300
2452 (250)
17
8500
700
3432 (350)
2
7000
300
2452 (250)
18
9000
700
3432 (350)
3
7500
300
2452 (250)
19
9500
700
3432 (350)
4
6500
400
2942 (300)
20
8500
800
3432 (350)
5
7000
400
2942 (300)
21
9000
800
3432 (350)
6
7500
400
2942 (300)
22
9500
800
3432 (350)
7
8000
400
2942 (300)
23
10500
700
3432 (350)
8
7000
500
3432 (350)
24
10500
800
3923 (400)
9
7500
500
3432 (350)
25
8000
1500
3432 (350)
10
8000
500
3432 (350)
26
8000
800
3432 (350)
11
8500
500
3432 (350)
27
8500
1500
3432 (350)
12
7500
600
3432 (350)
28
7500
800
3432 (350)
13
8000
600
3432 (350)
29
8000
1200
3432 (350)
14
8500
600
3432 (350)
30
8500
1200
3432 (350)
15
9000
600
3432 (350)
31
9000
1200
3432 (350)
16
8000
700
3432 (350)
        

NOTE:
The condition numbers of the above list show the type of the spot welding conditions of the spot welding points including the ultra high-strength steel (1500MPa/1180MPa) parts of Honda and Acura vehicles.
The welding condition values described in the above list are determined by experiments using test pieces, zinc primer coating, preheat, and specified tip shapes (Round-16).
For spot welds involving 1500MPa steel parts, manual spot welder settings provided in the BRM (or a Honda-specific program) are recommended. Honda does not recommend using the spot welder’s AUTO mode for this steel grade because these settings may not achieve adequate weld strength.