Yuav ua li cas txhim kho lub hardness ntawm GR4 titanium alloy
Cov txheej txheem thiab txheej txheem rau kev txhim kho hardness ntawm GR5 titanium alloy
GR5 titanium alloy,tseem hu ua Ti-6Al-4V, yog ib qho muaj zog, siab tawv titanium alloy. Nws muaj pes tsawg leeg muaj 6% aluminium (Al) thiab 4% vanadium (V), ua rau nws siv dav hauv aerospace, khoom siv kho mob, kev tsim tsheb thiab lwm yam haujlwm. Txhawm rau ua kom tau raws li qhov xav tau ntawm engineering sib txawv, kev txhim kho hardness ntawm GR5 titanium alloy yog qhov teeb meem tseem ceeb.
Cov hauv qab no yog ob peb txoj hauv kev thiab cov txheej txheem uas tuaj yeem siv los ua kom lub zog ntawm GR4 titanium alloy:
1. Kev kho cua sov (kub kev laus kho)
Kev kho cua sov yog ib txoj hauv kev los txhim kho hardness ntawm titanium alloys. Los ntawm kev muab GR5 alloy rau kev kho cua sov mus sij hawm ntev nyob rau hauv qhov kub thiab txias, cov qauv siv lead ua tuaj yeem hloov kho thiab cov txheej txheem ntawm cov crystals optimized, yog li ua kom cov tawv tawv. Cov txheej txheem no feem ntau hu ua kev laus. Hauv kev kho thermal aging, los ntawm kev tswj lub sijhawm thiab qhov kub thiab txias, cov qauv ua kom zoo dua qub tuaj yeem tsim tau, thiab cov tawv tawv thiab tensile kuj tuaj yeem txhim kho.
2. Kev ua haujlwm txias (kev kho deformation)
Kev ua haujlwm txias muaj xws li cov yas deformation ntawm cov hlau, xws li txias dov, txias txias los yog forging, thiab lwm yam, los qhia txog kev tsis xws luag xws li dislocations, yog li hloov cov qauv siv lead ua thiab ua kom cov hardness. Kev ua haujlwm txias kuj pab txhim kho lub zog thiab tensile zog ntawm cov khoom. Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias kev ua haujlwm txias ntau dhau tuaj yeem ua rau cov hlau ua nkig, yog li cov txheej txheem ntawm kev ua haujlwm yuav tsum tau tswj kom tsim nyog.
3. Kev kho cov kua nplaum
Kev kho tshuaj yog ib txoj hauv kev los ntawm cua sov cov hlau mus rau lub xeev cov tshuaj tov thiab tom qab ntawd txias nws sai. Thaum kub kub, cov ntsiab lus alloying nyob rau hauv cov alloy yog uniformly yaj nyob rau hauv lub matrix, uas yuav pab tau kom lub hardness. Tom qab kev daws teeb meem, kev kho kom zoo dua hardness thiab cov khoom tuaj yeem tau txais los ntawm kev kho cua sov ntxiv.
4. Kev kho deg
Cov thev naus laus zis kho deg tuaj yeem tsim cov txheej txheem nyuaj lossis oxides ntawm qhov chaw ntawm GR5 titanium alloy, yog li txhim kho qhov tawv tawv. Cov kev kho saum npoo feem ntau muaj xws li nitriding, carbonization, oxidation, thiab lwm yam. Cov kev kho no tsis tsuas yog nce hardness tab sis kuj txhim kho corrosion tsis kam thiab kev sib txhuam ntawm qhov chaw.
5. Alloy tsim
Los ntawm kev kho cov ntsiab lus thiab hom alloying cov ntsiab lus, cov qauv siv lead ua tuaj yeem ua kom zoo dua qub thiab hardness txhim kho. Piv txwv li, fine-tuning aluminium thiab vanadium cov ntsiab lus tuaj yeem cuam tshuam cov qauv siv lead ua thiab yog li kho qhov hardness. Alloy tsim yuav tsum coj mus rau hauv tus account qhov sib npaug ntawm hardness thiab lwm yam khoom kom tau raws li cov kev thov tshwj xeeb.
6. Cov nag lossis daus hardening
Precipitation hardening yog cov txheej txheem ua rau qee cov ntsiab lus hauv cov hlau los tsim cov kev daws teeb meem thiab cov nag lossis daus los ntawm cov kev kho cua sov uas tsim nyog, yog li ua rau muaj zog ntxiv. Los ntawm kev tswj xyuas cov xwm txheej ntawm cov nag lossis daus cov tshuaj tiv thaiv, tuaj yeem tau txais hardness ntau dua thiab lub zog thiab toughness ntawm cov hlau tuaj yeem txhim kho rau qee yam.
Cov ntsiab lus
Txhim kho qhov nyuaj ntawm GR5 titanium alloy yog qhov teeb meem ntau yam uas yuav tsum tau xav txog kev kho cua sov, kev ua haujlwm txias, kev kho kom zoo, kev kho deg, alloy tsim thiab nag lossis daus hardening. Txhua txoj hauv kev muaj nws cov xwm txheej thiab qhov zoo, yog li hauv kev siv tswv yim yuav tsum xaiv cov txheej txheem tsim nyog raws li cov cai tshwj xeeb. Kev nce hauv hardness feem ntau cuam tshuam nrog kev hloov kho thiab sib npaug ntawm lwm yam khoom, yog li ntau yam yuav tsum tau txiav txim siab kom ua tau raws li cov kev xav tau ntawm engineering thiab daim ntawv thov.
