Appendix
Magnetic flux density - adjustment aid
36
099-002065-EW501
9.9.2019
10 Appendix
10.1 Magnetic flux density - adjustment aid
Depending on the material used, the thickness of workpieces and the measuring instrument used, the
winding numbers or current values may vary. Ideally, the measured flux density should be in the middle of
the parameter field.
Number of turns
Welding current (I
2
)
50 A
100 A
125 A
150 A
175 A
200 A
250 A
Magnetic flux density mT
2
3
4
5
5
6
6
8
3
4
6
7
8
9
10
10
4
4
7
8
9
10
12
13
5
5
8
9
11
12
14
16
6
5
9
11
12
14
16
18
7
5
10
12
14
16
19
21
8
7
12
15
18
21
24
27
9
8
13
17
22
25
[1]
29
34
10
10
15
20
26
30
34
40
11
12
16
23
27
35
39
46
12
15
18
26
29
39
45
53
13
16
20
29
30
44
50
59
14
18
22
32
32
48
55
66
15
18
24
35
33
53
61
72
[1] Example of use:
The measured value is 25 mT. This results in a number of turns of 9 and a degaussing current of 175
A if the activgauss process is used.
10.2 Guide values of magnetic flux density, weldability
TIG welding
GMAW welding
Magnetic flux density
Weldability
Magnetic flux density
Weldability
<0.5 mT
very good
<3 mT
very good
0.5-1 mT
good
3-4 mT
good
1-2 mT
possible
4-6 mT
possible
2-5 mT
poor
6-8 mT
poor
>5 mT
unsuitable
>8 mT
unsuitable
