Magnetic bias a ɛbɔ wɔ arc welding mu no fi magnetic field lines a ɛwɔ arc no ho no kyekyɛ a ɛnteɛ, a ɛma arc no twe ne ho fi welding axis no ho. Saa adeyɛ yi a ɛda adi no ma arc combustion no ntumi nnyina, mframa a ɛbɔ ho ban no ho banbɔ nyɛ papa, na nsu a ɛtɔ gu fam no nsakrae no nyɛ pɛpɛɛpɛ, na ɛde welding sintɔ ahorow te sɛ weld a ɛnyɛ papa, undercut, incomplete penetration, root or interlayer lack of fusion, pores, pores, ne we wel side or droplet or Grect (Welding Wire to One,,,, na mpo ɛbɛma w’agye wel. Afei wɔde akwan ne akwan bi a wɔbɛfa so ayi arc magnetic bias a ɛrebɔ afi hɔ anaasɛ wɔbɛtew so no aba sɛnea edidi so yi:
1. Bɔ mmɔden sɛ wode AC welding afiri, current nketewa, arc short arc welding ne akwan foforo bedi dwuma de adi saa adeyɛ yi ho dwuma.
2. Sesa gyinabea a ɛwɔ fam waya no mu.
(1) Fa welding ground waya (bonding wire) no bata weld no mfinimfini ho.
(2) Fa asase so nhama no bata weld no ano abien no nyinaa ho.
(3) Ma asase so waya no nbɛn welding gyinabea no sɛnea ɛbɛyɛ yiye biara.
3. Welding Torch Cable Winding Method: Sɛ wo winding welding torch cable no fã bi twa welding port a ɛwɔ welded part (Pipe) no awiei biara ho hyia ma dannan kakraa bi a, wɔyɛ welding. Weld the other end of the pipe mouth to see the effect te sɛ, atirimpɔw no ne sɛ wobɛtwa magnetic tumi a magnetic field no de ba no mu.
4. Sɛ kuw no hyia a, wɔde multi-point solid welding kwan no di dwuma ma tack welding, na wɔde nozzles abien no si hɔ wɔ ne gyinabea, na afei wɔyɛ welding a ɛyɛ daa a ɛwɔ electrode arc welding no mu. anaasɛ bridging kwan so gyinabea, nso betumi adi dwuma wɔ degaussing mu.
5. Wobetumi asusuw ho sɛ wɔde bedi dwuma . Electromagnetic control arc stabilization nhyehyɛe a ɛma nteɛso a ɛde ne ho na ɛyɛe . Hangao Tech (Seko mfiri) a wonyaa nea wɔayɛ no ho tumi krataa ma . Sɛnea ɛbɛyɛ a wɔbɛma adwumayɛ kwan no atu mpɔn na wɔanya weld a ɛyɛ papa no, arc welding arc stabilizer a yɛn adwumakuw no ayɛ no, sɛnea ɛbɛyɛ a wobedi ɔhaw ahorow a ɛwɔ atifi hɔ no ho dwuma no, de anyinam ahoɔden a ɛyɛ tenten a wotumi sesa wɔ arc no mfinimfini ka ho, na ɛma arc no gyina mfinimfini denam anyinam ahoɔden tumi so. Anaasɛ pia kɔ anim, a electromagnetic stability, arc no renhinhim akyi anaa benkum ne nifa, ɔhaw a ɛne undercut ne 'hump' renna adi. Enti, wɔma nneɛma a wɔyɛ no yiye no tu mpɔn na wɔhwɛ hu sɛ ɛyɛ papa. Wɔadi ahoɔhare a ɛkɔ soro a ɛyɛ 20-30% no ho adanse wɔ nneɛma a wɔyɛ ankasa mu. Sɛnea ɛbɛyɛ a wɔbɛsakra wɔn ho akɔ welding currents ahorow ne ahoɔhare a wɔde yɛ no so no, wobetumi asiesie electromagnetic tumi no ma ɛne welding currents ne ahoɔhare ahorow ahyia.
6. Wɔ butt welds a ahwehwɛde a ɛba fam ho no, wobetumi de oxyacetylene high temperature demagnetization kwan adi dwuma wɔ afã abien no nyinaa.
7. Hwɛ welding core a ɛwɔ electrode no ankasa mu, na eccentricity no ntumi nyɛ aniberesɛm bere a wɔreyɛ no, anyɛ saa a eccentric blowing bɛba te sɛ magnetic eccentric blowing.
8. Sɛ arc a ɛbɔ no ba wɔ welding no mu wɔ electrode no mu a, wobetumi asiesie electrode no anim no sɛnea ɛfata, sɛnea ɛbɛyɛ a electrode no bɛkɔ akɔfa mframa no afã, na arc no tenten ayɛ tiaa, a ɛyɛ nea mfaso wɔ so na etu mpɔn ma ɔhwe a ɛnyɛ aniberesɛm kɛse no.
9. Sɛ fã bi bɔ bere a welding wɔ weldment no ano a, arc strike plate ne lead-out plate no betumi asiesie wɔ weldment no ano abien no nyinaa, na afei wɔayi afi hɔ bere a welding no awie no, a ebetumi nso adi dwuma wɔ ɔfã bi a ɛbɔ no mu.
10. Yi magnetic field a ebetumi aba no fi hɔ ma nneɛma a atwa weld no ho ahyia no.
11. Wɔ nsɛm a emu yɛ den mu no, fa degaussing nnwinnade soronko di dwuma ma degauss.
