Ti 6242 titanium yog cov hlau nquag heev, nyob rau hauv cov kua hauv lub xeev, thiab cov pa oxygen, nitrogen, hydrogen thiab carbon cov tshuaj tiv thaiv yog ceev heev, yog li titanium alloy melting yuav tsum nyob rau hauv lub tshuab nqus tsev siab los yog inert gas (ar los yog ne) tiv thaiv. Melting crucible nrog dej-txias tooj liab crucible, cov txheej txheem melting tshwj xeeb muaj peb txoj hauv kev: (1) tsis siv tus kheej electrode arc rauv melting alloy melting nyob rau hauv lub tshuab nqus tsev los yog inert gas tiv thaiv. Cov txheej txheem tsuas yog npaj cov electrodes rau nws tus kheej noj electrode melting. (2) Nqus tus kheej-siv electrode arc rauv melting Ib tus kheej-siv electrode ua los ntawm titanium los yog titanium alloy yog siv raws li cathode thiab ib tug dej-txias tooj liab crucible li lub anode. Lub melted electrode nkag mus rau hauv lub crucible nyob rau hauv daim ntawv ntawm cov kua tee, tsim ib tug molten pas dej ua ke. Qhov saum npoo ntawm lub pas dej molten yog rhuab los ntawm ib qho hluav taws xob arc thiab yog ib txwm nyob hauv lub xeev ua kua. Hauv qab thiab thaj chaw ib puag ncig hauv kev sib cuag nrog lub crucible yog raug yuam kom txias, ua rau hauv qab-up crystallization. Cov hlau ua kua hauv lub pas dej molten solidifies thiab ua titanium ingot. (3) Nqus tus kheej noj electrode condensation plhaub tiv thaiv melting Melting ntaus ntawv schematic. Qhov cub hluav taws xob no yog tsim los ntawm lub tshuab nqus tsev siv tus kheej electrode arc rauv, nws yog ib hom melting thiab centrifugal pouring rau hauv lub casting ntawm zoo li lub qhov cub hom. Nws qhov loj tshaj plaws feature yog tias muaj ib txheej ntawm titanium alloy khoom nyias plhaub ntawm cov dej-txias tooj liab crucible thiab molten hlau, lub thiaj li hu ua congealed plhaub, thiab cov txheej ntawm congealed plhaub ntawm tib cov ntaub ntawv ua hauj lwm pab raws li hauv ob sab phlu. crucible, uas yog siv los tsim lub pas dej ua ke los khaws cov titanium kua, thiab tsis txhob muaj kev sib kis ntawm cov crucible rau titanium alloy kua. Tom qab casting, ib txheej ntawm congealed plhaub sab laug nyob rau hauv nce poob yuav siv tau raws li lub crucible hauv ob sab phlu.
Nyob rau hauv xyoo tas los no, nrog rau kev loj hlob ntawm science thiab technology thiab ntau lawm xav tau kev pab, successive kev tshawb fawb thiab kev loj hlob ntawm melting titanium alloy thiab lwm yam active hlau tshiab txoj kev thiab cov cuab yeej siv, feem ntau yog electron beam rauv, plasma rauv, nqus induction rauv, thiab lwm yam. tej degree ntawm daim ntawv thov. Txawm li cas los xij, los ntawm kev sib piv ntawm kev siv hluav taws xob, melting ceev, tus nqi thiab lwm yam kev qhia thiab kev lag luam, kev siv tus kheej electrode arc rauv (xws li condensing plhaub rauv) melting tseem yog txoj kev lag luam tshaj plaws thiab siv tau. Vim yog lub cev - tshuaj lom neeg cov khoom ntawm titanium, ua cov txheej txheem casting ntawm titanium alloy, txawm tias tus nqi ntawm cov ntaub ntawv ua qauv yog cov txheej txheem nws muaj nws tus kheej cov cai thiab cov yam ntxwv. Ua ntej, qhov yuav tsum tau muaj siab heev refractoriness qauv cov ntaub ntawv; Qhov thib ob, lub pouring yuav tsum tau nqa tawm nyob rau hauv ib tug high degree ntawm nqus tsev vacuum los yog inert gas tiv thaiv, thiab tej zaum kuj txuas nrog centrifugal quab yuam. Kev sib txuas cov khoom siv plhaub yog qhov sib txawv, yaj molding plhaub tau muab faib ua peb qhov sib txawv.
(1) Ntshiab graphite plhaub system. Graphite hmoov ntawm ntau qhov ntau thiab tsawg yog siv los ua cov khoom siv refractory thiab cov xuab zeb sib kis, thiab cov resin yog siv los ua cov khoom sib txuas. Lub zog muaj zog, lub teeb yuag, tus nqi qis thiab dav ntawm cov khoom siv raw. Haum rau centrifugal lossis gravity casting.
(2) Refractory hlau nto txheej plhaub system. Rau cov txheej txheem sib xyaw, ntxiv rau cov txheej txheej saum npoo vim yog cov khoom siv sib txawv (tungsten hmoov thiab lwm yam hlau refractory) yuav tsum tau ua cov txheej txheem tshwj xeeb, cov txheej txheem rov qab los ntawm cov khoom tsim qauv mus rau lub plhaub ua cov txheej txheem yog tib yam li cov cam khwb cia. steel peev casting.
(3) Oxide ceramic plhaub system. Lub ntsej muag thiab sab nraub qaum ntawm lub plhaub yog ua los ntawm oxide ua qauv khoom, yog li lub plhaub muaj lub zog siab thiab thermal conductivity yog qhov tsawg tshaj plaws ntawm peb hom plhaub, uas yog tsim rau pouring nyias-walled castings nrog complex duab.
Titanium castings cam khwb cia nrog cov saum toj no peb hom plhaub system, nyob rau hauv cov tshuaj muaj pes tsawg leeg thiab txhua yam khoom ntawm qhov sib txawv yog heev me me; tab sis muaj qhov sib txawv tseem ceeb hauv qhov zoo, qhov kawg ntawm ob hom plhaub shrinkage yog qhov me dua li lub plhaub graphite, thiab yog li qhov tseeb qhov tseeb ntawm casting.
