Prospot UK brochure 2024/2025 - Catalog - Page 18
PROJECTION WELDING GUIDELINES
WELDING CONDITIONS FOR SQUARE WELD NUTS
SHEET THICKNESS
mm
ELECTRODE
FORCE kN
WELD TIME
CYCLES
CURRENT KA
M4
1.0 -2.0
2.9 - 3.1
5
7.5 - 8.0
6
M5
1.0 - 2.0
3.6 - 3.8
5
9.0 - 9.5
12
M6
1.0 - 2.0
4.2 - 4.5
6
10.5 - 11.0
20
M8
1.0 - 2.0
4.9 - 5.1
9
17.0 - 18.0
50
M10
2.0.
6.0 - 6.5
10
21.0 - 22.0
100
M12
2.0.
7.1 - 7.4
12
24.0 - 25.0
180
THREAD SIZE
MIN TORSIONAL
LOAD TEST Nm
WELDING CONDITIONS FOR WELD BOLTS
SHEET THICKNESS
mm
ELECTRODE
FORCE kN
WELD TIME
CYCLES
CURRENT KA
M5
1.0 - 2.0
2.7
12
8.0
6
M6
1.5 - 2.5
3.5
14
8.5
10
M8
1.5 - 2.5
3.5
15
9.5
23
M10
2.0 - 3.0
4.5
16
11.0
40
BOLT SIZE
MIN TORSIONAL
LOAD TEST Nm
GUIDELINES FOR WELDING PRESSED PROJECTIONS IN SHEET STEEL
MATERIAL
THICKNESS
mm
PRESSUE
kN
lbF
TIME
CURRENT
FORCE
CURRENT
cycles
Amps
kN
lbF
Amps
5
4200
0.56
125
1400
0.60
1.11
250
0.90
1.96
440
7
8000
0.98
220
2400
1.20
2.67
600
10
9500
1.33
300
2050
1.60
3.29
740
12
10500
1.65
370
3150
2.00
4.18
940
16
12300
2.09
470
3690
2.60
5.83
1310
21
15000
2.91
655
4500
EXAMPLE OF 2 OFF 1.6MM THICK CARBON STEEL
CONSISTING OF 4 PROJECTIONS
CURRENT
WELD TIME
kN
TIP FORCE
lbF
Amps
Cycles
Projec琀椀on 1
3.29
740
10500
12
Projec琀椀on 2
1.65
370
3150
Projec琀椀on 3
1.65
370
3150
Projec琀椀on 4
1.65
370
3150
Total
8.23
1850
19950
18
12
● Telephone – 01827 254 829 ● sales@prospot.co.uk ● www.prospot.co.uk
