Kuzimitsa kwa vacuum, kuzimitsa kowala kwa chitsulo chosapanga dzimbiri cha aloyi yachitsulo, Kutentha, kuzimitsa kwa chitsulo chosapanga dzimbiri cha aloyi yachitsulo

Kuzimitsa, komwe kumatchedwanso kuuma, ndi njira yotenthetsera kenako kuziziritsa chitsulo (kapena alloy ina) pa liwiro lalikulu kotero kuti kuuma kumawonjezeka kwambiri, kaya pamwamba kapena ponseponse. Pankhani ya Kuzimitsa kwa vacuum, njirayi imachitika mu uvuni wa vacuum momwe kutentha kufika pa 1,300°C kumatha kufikika. Njira zozimitsira zimasiyana malinga ndi zinthu zomwe zakonzedwa koma kuzimitsa mpweya pogwiritsa ntchito nayitrogeni ndikofala kwambiri.

Kuzimitsa mpweya mu vacuum:

Pa nthawi yozimitsa mpweya wa vacuum, zinthu zimatenthedwa popanda mpweya kudzera mu mpweya wopanda mphamvu (N₂) ndi / kapena kutentha komwe kumayaka pansi pa mphamvu. Chitsulo chimalimba ndi nayitrogeni, pomwe kuzizira kumatha kudziwika posankha mphamvu yowonjezera. Kutengera mawonekedwe a workpiece, n'zothekanso kusankha njira ndi nthawi yopumira nayitrogeni. Kukonza nthawi ndi kuwongolera kutentha kwa chitsulo kumachitika panthawi yogwiritsira ntchito ma thermocouple oyendetsa omwe amatha kuyikidwa pa workpiece mu chipinda chotenthetsera. Chitsulo chomwe chimatenthedwa ndi kutentha mu uvuni wa vacuum chimapeza mphamvu ndi kuuma komwe kwatchulidwa m'gawo lonselo, popanda kuwononga pamwamba. Tirigu wa austenitic ndi wabwino ndipo umagwirizana ndi miyezo yapadziko lonse lapansi.

Pafupifupi zitsulo zonse zosakaniza zachitsulo zosangalatsa, monga zitsulo za masika, zitsulo zozizira, zitsulo zozimitsidwa ndi zofewa, zitsulo zotsutsana ndi kukangana, zitsulo zotentha ndi zitsulo za zida, komanso zitsulo zosapanga dzimbiri zambiri komanso zitsulo zachitsulo zotayidwa, zimatha kulimba motere.

Kuzimitsa Mafuta Osalowa M'malo Opanda Utsi

Kuzimitsa Mafuta a Vacuum kumaziziritsa zinthu zotenthedwa ndi mafuta a Vacuum. Pamene kusamutsa mphamvu kumachitika pogwiritsa ntchito vacuum kapena mpweya wosagwira ntchito titachotsa uvuni, pamwamba pa gawolo nthawi zonse pamakhala potetezedwa mpaka litalowa mu mafuta. Kuteteza pamwamba kumakhala kofanana kwambiri kaya kuzimitsa mu mafuta kapena mpweya.

Ubwino waukulu poyerekeza ndi njira zachikhalidwe zozimitsira mafuta mumlengalenga ndikuwongolera molondola magawo oziziritsira. Ndi uvuni wa vacuum, n'zotheka kusintha magawo ozimitsira wamba - kutentha ndi kugwedezeka - komanso kusintha kuthamanga pamwamba pa thanki yozimitsira.

Kusintha kuthamanga kwa mpweya pamwamba pa thanki kudzapangitsa kuti mpweya ukhale wosiyana mkati mwa bafa la mafuta, zomwe zimasintha momwe mafuta amagwirira ntchito pozizira mpweya. Zoonadi, malo owira ndi gawo lomwe liwiro lozizira limakhala lalikulu kwambiri. Kusintha kwa kuthamanga kwa mpweya wa mafuta kudzasintha kuzizira kwake chifukwa cha kutentha kwa katundu.

Kuchepetsa kuthamanga kwa mpweya kudzayambitsa kuzizira kwa madzi, komwe kumayambitsa kuwira. Izi zidzawonjezera mphamvu yozizira ya madzi oziziritsa ndikuwongolera mphamvu yolimba poyerekeza ndi momwe zinthu zilili mumlengalenga. Komabe, kupanga nthunzi yambiri kungayambitse kusinthasintha kwa mpweya m'chimake ndipo kungayambitse kusintha kwa kutentha.

Kuwonjezeka kwa mphamvu mu mafuta kumaletsa kupanga nthunzi ndipo kumachedwetsa kuuluka kwa nthunzi. Chidebecho chimamatira ku gawolo ndikuzizira mofanana koma pang'ono kwambiri. Chifukwa chake, kuzimitsa mafuta mu vacuum kumakhala kofanana kwambiri ndipo sikubweretsa kusokonekera pang'ono.

Kuzimitsa madzi mu vacuum

Njira monga kuzima mafuta a vacuum, ndi njira yabwino kwambiri yothetsera kutentha kwa aluminiyamu, titaniyamu kapena zinthu zina zomwe zimafunika kuziziritsidwa mwachangu mokwanira.