Ndi zinthu ziti zomwe zimakhudza kukhazikika kwa arc wowotcherera

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Zinthu zomwe zimakhudza kukhazikika kwa arc wowotcherera makamaka zimaphatikizapo izi:

(1) Maluso opangira ma welder ndi luso losintha kutalika kwa arc

Njira yogwiritsira ntchito wowotcherera ndi chinthu chofunikira pozindikira kukhazikika kwa arc. Panthawi yowotcherera, zida za wowotcherera (zovala) ziyenera kukhala zoyenera ndipo kutalika kwa arc kuyenera kukhala kosasintha momwe kungathekere. Kupanda kutero, kusinthasintha kwakanthawi kowotcherera kapena kusokoneza kwa arc kumachitika. The ngodya pakati pa kuwotcherera waya ndi workpiece, ndi pakati pa kuwotcherera mfuti ndi workpiece, ayenera kukhala yoyenera kutulutsa malowedwe oyenera, kupewa kuwotcherera zilema, ndi kusunga dziwe losungunuka. Pa kuwotcherera basi, kutalika kwa arc kumafunika kusinthidwa zokha kuti zitsimikizire kuti kutalika kwa arc kumakhalabe kosasintha panthawi yowotcherera, potero kuwonetsetsa kuti pakhale zowotcherera nthawi zonse.

(2) Arc kuwotcherera magetsi

① Mitundu yamagwero amagetsi amawotcherera a arc: Mphamvu zamagetsi zowotcherera za DC arc ndi ma square wave AC arc welding magwero ali ndi kukhazikika kwa arc kuposa magwero amagetsi a sine wave AC arc. Kukhazikika kwa pulse arc kuwotcherera mphamvu ndikwabwinoko, chifukwa chake, mphamvu yowotcherera ya pulse arc nthawi zambiri imagwiritsidwa ntchito pakuwotcherera ndi magetsi ang'onoang'ono.

②Makhalidwe akunja amagetsi opangira kuwotcherera arc Makhalidwe akunja amagetsi amayenera kutsata zofunikira zoyatsira za arc za njira yowotcherera yofananira. Kuwotcherera kwazitsulo zazitsulo zamagetsi nthawi zambiri kumagwiritsa ntchito waya woonda (m'mimba mwake wa waya si waukulu kuposa 3.2mm), ndipo mphamvu yakunja yapang'onopang'ono iyenera kusankhidwa, apo ayi kuwotcherera Gasi zitsulo arc kuwotcherera ndi arc wosakhazikika komanso mkulu wamakono nthawi zina. amagwiritsanso ntchito waya wandiweyani. Mukamagwiritsa ntchito waya wandiweyani, ndikofunikira kugwiritsa ntchito gwero lamagetsi lomwe lili ndi mawonekedwe otsika akunja.

③Makhalidwe amphamvu amagetsi amaphatikiza kusintha kwafupipafupi. CO2 welding arc nthawi ndi nthawi imayaka ndikuzimitsa. Izi zimafuna kuti magetsi osanyamula katundu akwere mofulumira komanso kuti magetsi afupikitsidwe akwere bwino.

④Kutentha kwamphamvu kwamagetsi a arc welding. Kukwera kwamagetsi osanyamula katundu wamagetsi a arc welding, kumakhala kosavuta kuyambitsa arc komanso kukhazikika kwa kuyaka kwa arc. Komabe, mphamvu yamagetsi yopanda katundu ikakwera kwambiri, imawononga chitetezo cha munthu wowotcherera.

(3)Kuwotcherera magetsi

Kuwotcherera kwamakono, kumapangitsa kutentha kwa arc, mphamvu ya ionization ya gasi ndi kutulutsa kutentha m'dera la arc, ndipo kuyaka kwa arc kumakhala kolimba.

(4) Arc voltage

Magetsi a arc akuyenera kufanana ndi kuwotcherera komweko. Pamene kuwotcherera kumawonjezeka, mphamvu ya arc iyenera kuwonjezeka. Pamene kuwotcherera panopa nthawi zonse, ngati arc voteji ndi yaing'ono kwambiri, n'zosavuta kuyambitsa dera lalifupi; ngati magetsi a arc ndi aakulu kwambiri, arc idzagwedezeka mwamphamvu ndikuwononga kukhazikika kwa arc yowotcherera.

(5) Mawonekedwe a workpiece pamwamba, kutuluka kwa mpweya ndi maginito kupatuka

Ngati pamwamba pa workpiece si woyera, monga mafuta, dzimbiri, chinyezi, etc., arc poyatsira ndi moto arc adzakhala wosakhazikika. Pamene mpweya wotetezera umakhala wosakhazikika kapena pali kusokonezeka kwa maginito, arc idzakhalanso yosakhazikika.