Say Papel na Vacuum Induction Melting (VIM) ed Panagproseso na Tubo

Diad panagproseso na tubo, say vacuum induction melting (VIM) et manunan sengegan ed panagparaan na saray hilaw a materyales parad saray high-end ya tubo a singa say nickel-based alloys tan titanium alloys. Diad pangitipon na atagey a temperatura na panagtunaw tan say vacuum ya kaliberliber, nadampot to so dakel a kalat: unona, eksakton nakontrol toy komposisyon na alloy. Tunawen to ray metal ya materyales diad panamegley na electromagnetic field, suston mangiyarum na alloying elements, istrikton kokontrolen so proporsyon na saray kabiangan (ya walay error ya Less than o equal to 0.05%), napaliisan to ray impurities a singa say S tan P (ya Less than o equal to 0.01%), tan naseguro toy parepareho na trace elements; komadua, sarag ton ekalen iray gas tan ag-onkupas iran dutak. Diad sakey a vacuum ya kaliberliber ya kulang odino mipara ed 10−3 Pa, epektibon naekal to ray gas a singa say H₂, N2, tan O₂ (ya say H2 et kulang o mipara ed 1ppm tan O mas abeba o mipara ed 50ppm) tan ontan met ed abeban {{11}{1}{1}{2}{pointed impurities, ya mangaamper ed saray impuridad na saray pores tan bitak legan na mainit ya panagproseso ed saray tubo, tan pambawas ed saray oxide ya inlaktip pian napaaligwas so bilay na kapagaan; komatlo, nayarin nabawasan so segundaryon polusyon. Say closed vacuum ya kaliberliber et mangibiig ed impluensya na dagem tan saray materyales ed lining na hurnoan, ya ag makagawa na nitride tan oxide inclusions; komapat, mangiletneg itan na pundasyon parad ontumbok a panagproseso. Uusaren toy induction stirring pian naseguro so inkapareho na komposisyon tan temperatura na natunaw, nabawasan so inkaapag-apag na saray kabiangan, napino to ray ingot grains (manlapud mm ya lebel anggad μm ya lebel) diad pangontrol ed cooling rate, tan napaaligwas toy hot working plasticity.