Mawu oyambira vacuum kukonzanso

Kachiwiri, kupulumutsa mphamvu, zokwanira ndi zoyeretsa. Kugwiritsa ntchito njira yopukutira ndikuyipitsa kwa chithokwa kumatha kuthandizira kugwiritsa ntchito mchenga wowuma popanda kufunikira kophika, kuchepetsa kumwa malasha. Chifukwa cha ntchito yayitali ya vacuum ya nthawi yayitali, mphamvu zogwiritsidwa ntchito zimachulukana pang'ono, koma zimachepetsa fumbi ndi kupulumutsa ndalama zothandiza, kupulumutsa ntchito komanso kuchepetsa ntchito kwambiri. Durin g kutsanulira g njira, pali mpweya woyipa wochepera, kukwaniritsa zachilengedwe.

Kutulutsa kwamitundu kuli koyenera kupanga zinthu monga alloy chitsulo cha U-mtundu wa zikwangwani, zokhazikika, mbale zokhazikika, alloy chitsulo chowala, elcoy.