I-MFDC Welding vs AC Welding: Ubani Ophuma Phezulu?

I-Mid-frequency direct current (MFDC) welding kanye ne-alternating current (AC) welding yizinqubo ezimbili ezisetshenziswa kakhulu zokushisela, ngayinye inezici zayo.Kulesi sihloko, sizohlaziya ndawonye ukuthi iyiphi enesandla esiphezulu: i-MFDC welding noma i-AC welding?

Izimiso Zokusebenza:

I-MFDC/Inverter Welding Machine:

Okokuqala, i-voltage ye-AC yezigaba ezintathu idlula kwizilungisi ukuze zihlungwe.

Okwesibili, amaswishi e-IGBT aguqula okwamanje abe amandla amaphakathi nefrequency engu-1000 Hz futhi ayidlulisele ku-welding transformer.

Ekugcineni, ama-diode okulungisa amandla aphezulu akhipha i-welding current njenge-stable direct current (DC).

Umshini Wokushisela we-AC:

Okokufaka kwamandla yi-AC, okuthi, ngemva kokudlula ekushintsheni kwamandla, ingene kumjikelezo oyinhloko nokulawula.

I-transformer yehlisa i-high-voltage AC iye ku-AC enevoltage ephansi elungele ukushiselwa.I-AC yamanje ishintshashintsha phakathi kokuphozithivu nokubi, okukhiqiza ukushisa njengoba kudlula endaweni yokushisela kanye nocezu lokusebenza, ngaleyo ndlela incibilikisa impahla yokushisela futhi kuzuzwe ukushisela.

Izinzuzo ze-MFDC Welding ngaphezu kwe-AC Welding:

Ukuzinza Okuphezulu:

MFDC Weldingwaziwa emhlabeni wonke njengomunye wemikhiqizo yokushisela esezingeni eliphezulu, ethuthukisa ukuzinza ngesikhathi sokushisela.Imingcele yayo yenqubo yokushisela enobungani kanye nohlu olubanzi lokuvumelana nezimo lwamanje lwesibili lugcina lwamanje olungaguquki, lunikeza amathemba abanzi kune-AC welding.

Umthombo wamandla we-MFDC ukhipha i-waveform encane, ugwema imithelela ephezulu yamanje futhi unciphise ukuchaphazeka ngesikhathi sokushisela.

Ukulungiswa komshini wokushisela we-MFDC kwenzeka ngenani lezikhathi eziyi-1000 ngomzuzwana, kuzuza ukunemba kweleveli ye-millisecond, okunembe izikhathi ezingaphezu kuka-20 kunemishini yokushisela ye-AC evamile.

Ukushisela kwe-MFDC akuthintwa ukuma kanye nempahla ye-workpiece, kuqeda ukulahlekelwa okungenayo.

Ukusebenza Okuphezulu:

Imishini yokushisela ye-MFDC ithola amandla okushisela angaphezu kuka-98%, kuyilapho imishini ye-AC icishe ibe ngu-60%, okubonisa ukusebenza kahle okuthuthuke kakhulu ekushiseleni kwe-MFDC.

Izindleko Eziphansi Zokusebenza:

Ngenxa yokwenyuka okukhulu kwenani lokuqala le-welding yamanje, isikhathi sangempela sokushisela sifinyezwa ngaphezu kuka-20%, kunciphisa kakhulu isidingo sengcindezi yokushisela.

Izidingo zokunikezwa kwamandla kwasefekthri ziphansi, cishe 2/3 wemishini yokushisela ye-AC kuphela, futhi ngisho nokuguquguquka kwamandla kagesi, imishini yokushisela ye-MFDC isengakwazi ukulawula ngokunembile amandla okushisela.

Ngakho-ke, ukusetshenziswa kwamandla kwemishini yokushisela ye-MFDC kuncishiswe kakhulu, kuzuza ukonga amandla angaphezu kwama-40%.Ukwengeza, ukusebenzisa amasethi amathathu emithwalo elinganisiwe kuqinisekisa ukuthi alikho iqembu elilayishwa ngokweqile, elihlangabezana nezidingo zokongiwa kwamandla kwezomnotho.

Okungasindi:

Uma kuqhathaniswa nemishini yokushisela ye-AC, i-welding transformer yemishini ye-MFDC ilula kakhulu, okwenza okokusebenza kuphatheke kalula futhi kube lula.Inesisindo esisodwa kuphela kwezintathu zesisindo se-AC transformer kanye nevolumu, ilungele izinhlelo zokushisela amarobhothi.

Ayihambisani nemvelo:

Ukuqeda ukungcoliswa kwamandla kagesi, ukushisela i-MFDC kuyindlela yokushisela eluhlaza engadingi ukunikezwa kwamandla okuhlukile futhi ingasetshenziswa kanye nezinhlelo zokulawula ukulungisa ukushisela.

Kafushane, ukushisela kwe-MFDC kudlula ukushisela kwe-AC mayelana nokuzinza kwe-welding, ikhwalithi, ukusebenza kahle, ukonga amandla, okokusebenza okungasindi, kanye nezidingo zamandla ezincishisiwe zesistimu yokuphakelwa kwamandla.

I-Agera inikeza uhla oluphelele lwemishini yokushisela amabala aphakathi nefrequency, enobuchwepheshe bokushisela be-MFDC obufinyelela ezingeni eliphezulu lamazwe ngamazwe.I-high short-circuit current ifinyelela ku-250,000 amperes, esetshenziswa kabanzi kuma-alloy steels ahlukahlukene, izinsimbi eziqinile, izinsimbi ezishisayo, nezinqubo zokushisela indawo ye-aluminium alloy, ehlinzeka ngemishini ephezulu kanye nezinsizakalo ezinokwethenjelwa ezinkampanini eziningi ezidumile emhlabeni wonke ze-Fortune 500. .