Nqus consumable arc melting yog cov paub tab thiab dav siv txheej txheem los ua titanium thiab titanium alloy ingots. Lub hauv paus ntsiab lus yog siv lub pre pressed thiab welded electrode (sponge titanium thiab intermediate alloy) raws li cathode, ib tug dej -coj tooj liab crucible li lub anode, thiab tsis tu ncua yaj kawg ntawm cov electrode los ntawm ib tug muaj zog direct tam sim no arc (tam sim no mus txog kaum tawm txhiab tus amperes) nyob rau hauv ib tug high-zoo nqus tsev vacuum.
Molten hlau ntog mus rau hauv lub crucible nyob rau hauv daim ntawv ntawm cov tee los tsim ib tug molten pas dej ua ke, thiab solidifies rau hauv ingots txheej los ntawm txheej los ntawm hauv qab mus rau sab saum toj nyob rau hauv muaj zog dej txias. Txhawm rau kom muaj kev sib luag ntawm cov khoom sib xyaw thiab cov qauv, 2-3 txheej txheem remelting yuav tsum tau ua: thawj melting yog aimed ntawm alloying thiab yooj yim sib sau; Tom qab remelting yog siv rau kev ua kom huv ntxiv, tshem tawm kev sib cais, thiab ua kom zoo ntawm cov nplej. Lub ntsiab lus tseem ceeb ntawm VAR txheej txheem yog nyob rau hauv qhov tseeb tswj ntawm melting thermodynamics. Los ntawm kev kho qhov tam sim no, voltage, melting tus nqi, thiab lub zog thiab kev faib tawm ntawm qhov ruaj khov arc magnetic teb, cov duab, qhov tob, thiab qhov kub thiab txias gradient ntawm lub pas dej molten tuaj yeem tswj tau qhov tseeb, yog li tswj cov kev taw qhia solidification thiab tau txais qhov zoo tagnrho columnar lossis equiaxed siv lead ua qauv. Cov txheej txheem no ruaj khov thiab txhim khu kev qha, thiab yog txoj hauv kev tseem ceeb rau kev tsim cov loj- loj thiab siab- zoo ingots rau cov tseem ceeb forgings xws li aircraft cav rotors thiab aircraft lub ntsiab load-bearing structural Cheebtsam.
