Ngesikhathi senqubo yokubumba isikhunta somgijimi oshisayo, izinga lokushisa lepulasitiki elincibilikayo lilawulwa ngokunembile ohlelweni lomgijimi.Amapulastiki angagelezela emigodini ngendlela efanayo, okuholela ezingxenyeni zekhwalithi ezingaguquki.Izingxenye zokubumba zomgijimi oshisayo zinekhwalithi enhle yesango, ukucindezeleka okusalayo okuphansi ngemva kokudilizwa, kanye nokuguqulwa okuncane kwezingxenye.Ngakho-ke imikhiqizo eminingi yekhwalithi ephezulu emakethe ikhiqizwa isikhunta esigijima esishisayo.

Njengoba i-tungsten-molybdenum nezinto zayo ze-alloy zine-conductivity ephezulu yokushisa, amandla aphezulu okushisa, ukumelana nokunyuka, ukumelana nokugqoka, nokumelana nokugqwala okuphezulu, kuyizinto ezifanele zokwenza imibhobho yomgijimi oshisayo emishini yokubumba umjovo njengemishini yokubumba umjovo.