Peb lub tuam txhab nyob ib sab ntawm lub hauv paus zoo titanium sponge ntau lawm, thiab cov khoom siv raw khoom yog ua los ntawm qib 0 thiab qib 1 titanium daim txhuam cev, uas tau lees paub qhov zoo ntawm cov khoom thiab nteg lub hauv paus rau kev ua haujlwm tom ntej. cov khoom thiab qhov zoo ntawm cov khoom kawg.
At present, the industrial method for the production of titanium metal is the Kraul method, and the product is titanium sponge. The traditional process of making titanium is to melt and cast sponge titanium into ingots, and then process them into titanium. According to this, the main steps of the technological process from mining to making titanium are: titanium ore -> mining -> beneficiation -> too concentrate -> enrichment -> titanium-rich material -> chlorination -> crude TiCl4-> Refining -> Pure TiCl4-> Magnesium reduction -> Sponge titanium -> Casting -> Titanium ingots -> Processing ->Cov khoom siv titanium lossis titanium qhov chaw. Kev npaj tshuaj ntawm crude TiCI4. Tsis tas li ntawd, kev ua haujlwm casting yuav tsum yog cov txheej txheem metallurgical, tab sis qee zaum nws kuj raug cais raws li cov txheej txheem ua.
Kev ua haujlwm hauv cov txheej txheem saum toj no yog hais txog kev ua cov yas thiab casting. Cov txheej txheem ua cov yas muaj xws li forging, extrusion, dov, ncab thiab lwm yam. Nws tuaj yeem ua cov titanium ingots rau ntau qhov ntau thiab tsawg ntawm cov ncuav, rings, daim hlau, kav, tuav, profiles thiab lwm yam khoom, thiab tseem tuaj yeem muab pov rau hauv ntau yam duab ntawm cov khoom thiab cov khoom. Kev ua cov yas ntawm titanium thiab titanium alloys muaj cov yam ntxwv ntawm kev deformation loj; ib txwm kub plasticity sib txawv, siab yield txwv thiab lub zog txwv piv, loj rebound, rhiab rau notches, yooj yim rau daim ntawv cog lus nrog pwm thaum lub sij hawm deformation, thiab yooj yim rau nqus cov pa phem thaum rhuab, thiab lwm yam. Plastic processing yog nyuaj dua steel thiab tooj liab.
Yog li ntawd, kev siv thev naus laus zis ntawm titanium thiab titanium alloys yuav tsum xav txog cov yam ntxwv ntawm lawv.
Titanium adopts plastic processing, the processing size is not limited, and it can be mass-produced, but the yield rate is low, and a large amount of scraps and residues are generated during the processing. In view of the above shortcomings of titanium plastic processing, powder metallurgy technology has been developed in recent years. The powder metallurgy process of titanium is the same as ordinary powder metallurgy, but the sintering must be carried out under vacuum. It is suitable for the production of large-volume, small-sized parts, and is especially suitable for the production of complex parts. This method requires almost no processing and has a high yield rate. It can not only make full use of titanium waste as raw materials, but also reduce production costs, but it cannot produce large-size titanium parts. The powder metallurgy process of titanium is: titanium powder (or titanium alloy powder) -> sieving -> mixing -> press forming -> sintering -> auxiliary processing ->titanium cov khoom.
