Cov Nyhuv ntawm Cov Txheej Txheem Dov rau Cov Qauv Hlau
Pendahuluuan
Kev dov yog ib qho ntawm cov txheej txheem hloov pauv tshuab uas siv ntau tshaj plaws hauv kev lag luam tsim hlau. Cov txheej txheem no suav nrog kev nias hlau ntawm ob lossis ntau lub rollers tig, nrog lub hom phiaj ntawm kev txo qhov tuab ntawm cov khoom ua haujlwm thiab ua rau nws hloov pauv mus rau hauv cov duab xav tau. Kev dov tuaj yeem ua tiav rau ntau hom hlau, suav nrog hlau, txhuas, tooj liab, thiab lwm yam. Tsab xov xwm no yuav tshuaj xyuas tob txog cov teebmeem ntawm cov txheej txheem dov rau ntawm cov qauv hlau, suav nrog kev hloov pauv hauv microstructure, cov khoom siv kho tshuab, thiab nws cov ntawv thov hauv kev lag luam.
Cov Txheej Txheem Dov thiab Nws Cov Hom
Cov txheej txheem dov feem ntau muab faib ua ob hom tseem ceeb: dov kub thiab dov txias. dov kub yog ua tiav ntawm qhov kub siab, feem ntau siab dua qhov kub recrystallization ntawm cov hlau, thaum dov txias yog ua tiav ntawm qhov kub hauv chav tsev lossis qis dua qhov kub recrystallization.
1. Kev dov kub: Ua tiav ntawm qhov kub siab, ua rau cov yas hloov pauv ntau dua yam tsis ua rau muaj kab nrib pleb lossis tawg hauv cov hlau. Cov txheej txheem no feem ntau yog siv los tsim cov khoom loj xws li cov phaj hlau, cov pas nrig, thiab cov qauv profile. Kev dov kub tsim cov ntaub ntawv nrog qhov chaw ntxhib tab sis sib xws dua.
2. Kev dov txias: Ua tiav ntawm chav tsev kub, nws tsim cov khoom nrog qhov loj me meej dua thiab cov nplaim du dua li kev dov kub. Kev dov txias ua rau lub zog tensile thiab qhov nyuaj ntawm cov hlau los ntawm kev ua haujlwm hardening. Cov ntawv nyias thiab cov hlau strip feem ntau yog tsim los ntawm kev dov txias.
Cov Nyhuv ntawm Cov Txheej Txheem Dov rau ntawm Cov Hlau Microstructure
Cov txheej txheem dov cuam tshuam rau microstructure ntawm cov hlau los ntawm ntau yam mechanisms, xws li recrystallization, kev loj hlob ntawm cov noob, thiab kev tsim cov qauv.
1. Kev Rov Ua Dua Tshiab thiab Kev Loj Hlob ntawm Cov Nplej:
– Kev dov kub: Thaum kub siab, kev rov ua dua tshiab ntawm cov hlau tshwm sim, ua rau cov hlau uas puas lawm hloov pauv mus ua cov hlau tshiab, me dua, thiab sib xws dua. Qhov no ua rau cov khoom siv muaj cov qauv zoo ib yam thiab cov khoom siv kho tshuab zoo dua.
– Kev dov txias: Tsis muaj kev rov ua dua tshiab thaum lub sijhawm deformation. Yog tias deformation tseem ceeb, cov hlau yuav ua rau deformed heev thiab ntev, uas qee zaum ua rau muaj cov qauv tshwj xeeb (anisotropy) hauv cov khoom siv.
2. Kev Tsim Cov Qauv:
– Kev dov kub: Tsim cov qauv zoo sib xws dua vim yog recrystallization thiab qhov muaj qhov kub siab uas tso cai rau kev txav mus los ntawm cov atoms hauv cov crystal lattice.
– Kev dov txias: Tsim cov qauv sib txawv thiab anisotropy vim yog cov yas deformation ntawm qhov kub qis, uas tiv thaiv cov atoms hauv cov hlau kom tsis txhob rov qab mus rau lawv qhov chaw qub. Qhov no tseem ceeb hauv qee daim ntawv thov, xws li cov ntawv hlau rau canning lossis kev lag luam tsheb, qhov twg cov lus qhia dov muaj cov khoom siv sib txawv.
Cov Nyhuv ntawm Kev Dov rau Cov Khoom Siv Kho Tshuab ntawm Cov Hlau
Ntxiv rau qhov kev hloov pauv me me, cov txheej txheem dov kuj tseem cuam tshuam rau cov khoom siv kho tshuab ntawm cov hlau. Qee qhov kev hloov pauv tseem ceeb no suav nrog:
1. Lub zog tensile thiab hardness:
– Kev Dov Kub: Cov khoom dov kub muaj cov noob loj dua thiab cov qauv ntxhib dua, ua rau lub zog tensile thiab hardness qis dua li cov khoom dov txias. Txawm li cas los xij, cov khoom dov kub muaj cov ductile ntau dua thiab muaj kev nqus hluav taws xob zoo dua, ua rau lawv tsim nyog rau cov ntawv thov xws li cov hlau beams thiab kem.
– Kev dov txias: Ua kom lub zog tensile thiab qhov nyuaj dua los ntawm kev ua haujlwm tawv. Cov txheej txheem no ua rau muaj kev tawg ntxiv rau hauv cov qauv siv lead ua, uas tiv thaiv kev txav mus los ntawm lwm qhov kev tawg thiab ua rau cov khoom tiv taus kev hloov pauv ntxiv.
2. Kev yoog tau thiab kev tawv:
- Kub dov: Cov khoom siv yog ductile thiab tawv dua vim yog dynamic recrystallization thiab cov qauv homogeneity.
– Kev dov txias: Txo qhov ductility vim tias cov khoom siv ua tawv dua thiab tsis muaj peev xwm hloov pauv yas yam tsis tawg. Kev tawv tuaj yeem txo qis vim tias cov khoom siv feem ntau yuav tawg yooj yim dua tom qab ua haujlwm hnyav.
Daim Ntawv Thov ntawm Cov Txheej Txheem Dov Hauv Kev Lag Luam
Cov txheej txheem dov muaj ntau daim ntawv thov hauv ntau yam lag luam. Qee qhov piv txwv tseem ceeb ntawm nws cov ntawv thov yog:
1. Kev Lag Luam Tsheb:
- Siv cov hlau thiab cov ntawv txhuas txias rau lub cev tsheb, chassis, thiab lwm yam khoom uas muaj zog thiab qhov ntev yog qhov tseem ceeb.
- Cov khoom siv kub dov yog siv rau cov khoom chassis uas xav tau kev ruaj khov siab.
2. Kev Lag Luam Tsim Kho:
- Cov qauv hlau kub dov xws li I-beams, channels, thiab reinforcing bars siv rau hauv kev tsim kho vaj tse, choj, thiab lwm yam kev tsim kho vaj tse.
- Kuj siv rau cov foundation slabs thiab cov khoom siv uas xav tau kev ruaj khov thiab lub zog nqus tau.
3. Kev Lag Luam Dav Hlau:
- Siv cov hlau txhuas txias uas muaj zog thiab qhov hnyav piv rau cov qauv dav hlau thiab cov khoom.
- Titanium thiab lwm yam alloys tshwj xeeb uas xav tau lub zog siab thiab tiv taus qhov kub thiab txias heev kuj dhau los ntawm cov txheej txheem dov.
4. Cov Khoom Siv Hauv Tsev:
- Siv cov hlau txias dov rau cov txee, phab ntsa tshuab ntxhua khaub ncaws, thiab lub tub yees uas xav tau qhov chaw du thiab cov khoom siv kho tshuab zoo.
5. Kev Lag Luam Zog:
- Cov hlau uas dov txias yog siv rau hauv kev tsim roj teeb, suav nrog cov thev naus laus zis roj teeb lithium-ion rau cov tsheb fais fab thiab cov khoom siv hluav taws xob.
- Siv cov khoom kub dov hauv cov qauv cua turbine thiab cov chaw tsim hluav taws xob.
Xaus
Cov txheej txheem dov, ob qho tib si kub thiab txias, muaj kev cuam tshuam loj heev rau cov qauv thiab cov khoom siv kho tshuab ntawm cov hlau. Kev hloov pauv me me xws li recrystallization thiab kev tsim cov qauv ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab lub zog, qhov nyuaj, ductility, thiab toughness ntawm cov khoom siv. Kev nkag siab zoo txog cov txheej txheem thiab cov teebmeem ntawm kev dov ua rau cov engineers xaiv cov txheej txheem thiab cov kev cai tsim nyog rau cov ntawv thov tshwj xeeb, txhim kho kev ua haujlwm zoo thiab kev ua haujlwm ntawm cov khoom.
Kev lag luam tsim hlau txuas ntxiv mus nrog kev tsim kho tshiab hauv cov txheej txheem dov thiab cov ntaub ntawv tshiab, qhib lub sijhawm rau kev siv cov ntawv thov zoo dua thiab ua haujlwm tau zoo dua thoob plaws ntau yam kev lag luam. Yog li ntawd, cov txheej txheem dov tseem yog lub hauv paus ntawm kev tsim cov khoom siv hlau muaj zog thiab ntau yam.
