Titanium thiab titanium alloys muaj ntau yam ntxwv xws li lub teeb yuag, siab zog thiab corrosion kuj. Titanium thiab nws cov alloys tsis tsuas yog muaj cov ntawv thov tseem ceeb hauv kev lag luam aviation thiab aerospace, tab sis kuj tau pib siv tshuaj lom neeg, roj av, lub teeb kev lag luam, lub zog tsim hluav taws xob, metallurgy, thiab lwm yam. Siv dav hauv ntau cov kev lag luam hauv pej xeem. Txawm li cas los xij, titanium thiab titanium alloys tseem me dua li cov hlau nyob rau hauv cov nqe lus ntawm hardness thiab lub zog. Qhov tsis zoo ntawm titanium alloy hlau ua los ntawm titanium nyob rau hauv cov nqe lus ntawm hardness txwv nws daim ntawv thov dav thiab qhov tob. Nws tau cog lus tias yuav ua kom cov tawv tawv ntawm titanium alloys nyob rau hauv qhov chaw ntawm kev ua kom muaj kev tiv thaiv corrosion ntawm titanium thiab titanium alloys, thiab kev kho deg carburizing yog ib qho ntawm cov txheej txheem kev kho mob. Zoo ib yam li kev kho deg carburizing ntawm cov hlau, qhov kev kho deg carburizing ntawm titanium alloys kuj ua rau cov pa roj carbon atoms nrog kev ua haujlwm siab diffuse mus rau sab hauv ntawm titanium alloy los tsim cov txheej carburized nrog cov ntsiab lus carbon siab ntawm qee qhov tuab, uas yog tom qab ntawd. quenched / tempered, thiaj li hais tias lub nto txheej ntawm lub workpiece tau txais titanium alloy hlau nrog siab carbon cov ntsiab lus, thiab cov tub ntxhais ib feem tau txais titanium alloy nrog tsawg carbon ntsiab lus vim hais tias cov carbon cov ntsiab lus tswj cov thawj concentration. Lub hardness ntawm titanium alloy feem ntau muaj feem xyuam rau nws cov ntsiab lus carbon, yog li tom qab kev kho mob carburizing thiab tom qab kev kho cua sov tuaj yeem ua rau cov khoom ua haujlwm tau txais cov khoom ntawm sab nraud thiab sab hauv toughness.
Solubility ntawm carbon hauv titanium yog me me, tag nrho {{0}}.3 feem pua ntawm 850X, thiab li 0.1 feem pua ntawm 600C. Vim tias cov pa roj carbon solubility tsawg hauv titanium, nws tsuas yog dhau los ntawm titanium carbide txheej thiab nws cov diav rawg qis. Deposition txheej kom ua tiav lub hom phiaj ntawm deg hardening. Carburizing yuav tsum tau nqa tawm nyob rau hauv tus txheej txheem ntawm deoxygenation, vim hais tias lub hardness ntawm txheej txheej tsim los ntawm cov hmoov haum rau steel carburizing tiv thaiv nto ntawm carbon monoxide los yog oxygen-muaj cov pa roj carbon monoxide mus txog 2700MPa thiab 8500MPa, thiab nws yog ib qho yooj yim mus tev tawm. .
Nyob rau hauv sib piv, carburizing nyob rau hauv charcoal yuav tsim ib tug nyias txheej ntawm titanium carbide nyob rau hauv deoxidizing los yog decarburizing tej yam kev mob. Lub hardness ntawm txheej no yog 32OUOMPa, uas yog nyob rau hauv txoj kab nrog hardness ntawm titanium carbide. Qhov tob ntawm txheej carburized yog qhov ntau dua qhov tob ntawm cov txheej nitrided thaum nitriding nrog nitrogen nyob rau hauv tib yam kev mob. Hauv cov xwm txheej uas muaj cov pa oxygen, nws yuav tsum raug coj mus rau hauv tus account tias qhov nqus ntawm oxygen cuam tshuam qhov tob ntawm hardening. Tsuas yog nyob rau hauv nyias txheej thickness tej yam kev mob, nws muaj peev xwm infiltrate carbon hmoov nyob rau hauv lub nqus tsev vacuum los yog ib tug argon-methane cua los tsim kom txaus adhesion zog. Piv nrog rau qhov no, kev siv cov roj carburizing cov neeg ua haujlwm yuav tsim tshwj xeeb nyuaj thiab adhesion zoo. hardened txheej ntawm titanium carbide. Nyob rau tib lub sij hawm, lub hardening tsim nyob rau hauv qhov kub thiab txias ntawm 950T: thiab 10201: yog nyob nruab nrab ntawm 50fim thiab . Raws li txheej thickness nce, titanium carbide txheej yuav nkig ntau thiab nyhav tev tawm. Txhawm rau kom tsis txhob muaj kev cuam tshuam ntawm cov pa roj carbon inclusions rau hauv titanium carbide txheej vim qhov decomposition ntawm ruthene, yuav tsum tau siv cov kev cai ntawm kwv yees li 2 feem pua ntawm qhov ntim ntawm ruthene. Dosage Additives Gas carburizing hauv inert gas. Qhov qis ntawm qhov tawv tawv tau tshwm sim thaum carburizing nrog methane siv propane additives. Thaum lub zog sib txuas mus txog 9000kPa, thaum siv cov pa roj carbon monoxide propane, txawm hais tias ntsuas tuab ntawm cov txheej tawv tawv nyias nyias, nws muaj qhov zoo tshaj plaws hnav tsis kam. Hydrogen yog absorbed nyob rau hauv cov xwm txheej ntawm gas-hom carburizing tus neeg saib xyuas, tab sis nws yuav tsum tau muab tshem tawm dua thaum lub tshuab nqus tsev annealing.
