Mitundu iwiri yoyambira yama electromagnetic casting

Pali mitundu iwiri yoyambira ya ma elekitiromagineti kuponyera, ofukula ndi yopingasa, ndipo kuponya koyima kwamagetsi kumatha kugawidwa kukhala kukoka ndi kukokera pansi. Pakalipano, kuponyedwa kwa ma electromagnetic komwe kwayikidwa pakupanga mafakitale padziko lonse lapansi sikunatchulidwe. Choncho, bukhuli makamaka limayambitsa chipangizo choponyera ma electromagnetic cha aluminiyamu yoyimirira pansi ndi ma aloyi ake.

8. 1. 2. 1 Chipangizo chamagetsi ndi dongosolo lake

Chipangizo chamagetsi ndi chida chofunikira choponyera ma elekitiroma, kuphatikiza seti yapakatikati ya jenereta kapena mphamvu yapakatikati ya thyristor. Omwe kale anali Soviet Union, Hungary, Czech Republic, Germany ndi maiko ena aku Europe adatengera ma seti apakati pafupipafupi majenereta koyambirira, ndipo seti ya jenereta imatha kuponya ingot imodzi yokha. Pambuyo pa zaka za m’ma 1970, mayiko monga Switzerland ndi United States adagwiritsa ntchito mphamvu zamagetsi zamtundu wa thyristor pamagetsi opangira magetsi, ndipo gulu lamagetsi limatha kuponya ma ingots angapo. Mphamvu yamagetsi yapakatikati ya thyristor imakhala ndi zabwino zambiri kuposa ma seti apakati ajenereta, chifukwa chake imagwiritsidwa ntchito kwambiri.

Mfundo yamagetsi yoponyera mphamvu yamagetsi ikuwonetsedwa mu Chithunzi 8-6.

Chithunzi 8-6 Chithunzi chojambula chamagetsi amagetsi

1-square aluminiyamu ingot; 2-mold induction coil; 3-wapakatikati pafupipafupi thiransifoma; 4-malipiro capacitor;

5-Kuzungulira kwa inverter; 6-Inductor yosalala; 7-Kuwongolera dera; 8-Magawo atatu a AC pano

The thyristor intermediate frequency power supply ndi chipangizo chomwe chimatembenuza magawo atatu amagetsi osinthasintha mafupipafupi apakati pamagetsi apakati. Imagwiritsa ntchito AC-DC-AC frequency conversion circuit, yomwe imadziwika ndi kukhala ndi ulalo wapakatikati. Kudzera mu dera lokonzanso, mphamvu yama frequency a AC imasinthidwa kukhala mphamvu ya DC, kenako mphamvu ya DC imasinthidwa kukhala mphamvu ya AC ndi ma frequency a / kudzera pa inverter circuit. Mphamvu yamagetsi yapakatikati ya thyristor ili ndi maubwino ozungulira osavuta, kukonza zolakwika, ntchito yodalirika, komanso kuchita bwino kuposa 90%. Zipangizo zomwe zimakhala ndi mphamvu zosiyana zimakhala ndi malupu osiyana pang’ono ndi mapangidwe osiyanasiyana, koma mfundo ndi yofanana.