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15 ???????????????? ????? Measurement and analysis of low frequency magnetic field in Electronic Welding
????(Takumi Kobayashi), ????(Yosuke Iizuka) ????(Takumi Kobayashi), ????(Yosuke Iizuka)
???(Satoshi Yamane)??? ???(Satoshi Yamane)???
?????????????????? ??????????????????
???????????????????????????????????????????????????????????????????????????????????????????????????????????????????? In the electric welding, a strong magnetic field is generated to treat a large current, and it has the possibility of influencing worker's health. The purpose of this project was a decrease of the amount of the magnetic field exposure, and the low frequency magnetic field generated from the resistance welder was measured, and the magnetic field area was confirmed. Next, the exposure decrease measures were examined. In the electric welding, a strong magnetic field is generated to treat a large current, and it has the possibility of influencing worker's health. The purpose of this project was a decrease of the amount of the magnetic field exposure, and the low frequency magnetic field generated from the resistance welder was measured, and the magnetic field area was confirmed. Next, the exposure decrease measures were examined. In the electric welding, a strong magnetic field is generated to treat a large current, and it has the possibility of influencing worker's health. The purpose of this project was a decrease of the amount of the magnetic field exposure, and the low frequency magnetic field generated from the resistance welder was measured, and the magnetic field area was confirmed. Next, the exposure decrease measures were examined.
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DELECTIVE 2004/40/EC (?????????????????) ?EU?????2
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r
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r150
r250
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r20
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?? ?m? ??? ?m2? ???? ?A/m2? ??? ?A?
0.25 23.562 2163 0.918
0.2 18.85 3653 1.938
0.15 14.137 6972 4.932
0.1 9.425 13740 14.578
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???????(mm) ??35 ??5 ??10
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???????????????????Maxwell3D? ???????.