Hmoov metallurgy, raws li lub npe implies, yog txoj kev ua uas siv cov hmoov hlau ua cov khoom siv roj hmab, thiab yog nias thiab saws ntxiv kom ua rau ntau yam khoom. Qhov no tsis yog cov txheej txheem tshiab thiab thev naus laus zis, thiab muaj peev xwm txawm tias lawv tau txais rov qab rau Iyiv thaum ub. Txawm li cas los xij, nyob rau niaj hnub no txoj kev nrhiav ntawm kev loj hlob thiab loj hlob ntsuab, nws yog nyob rau hauv kab nrog kev txhim kho ntawm lub sijhawm thiab tau siv ntau zuj zus. Niaj hnub no, cia saib ntawm txoj kev tsim qauv no, uas yuav muab kev xaiv tshiab rau txhua tus neeg qhov kev tsim qauv.
Kev ua
Hmoov metallurgy zoo ib yam li forging lossis caming, tab sis qhov sib txawv yog tias nws cov khoom siv raw yog hlau, hlau, tooj, thiab lwm yam). Cov hmoov cov khoom nyoos tau nias ntawm chav tsev kub (rhuab hauv cov xwm txheej tshwj xeeb) siv cov pwm ntau. Qhov loj ntawm nias workpiece yog ze rau cov khoom tiav, tab sis nws cov yam ntxwv zoo dua yog tseem tsis ruaj khov. Txhawm rau ntxiv dag zog rau nws, nws yog li ntawd sintered ntawm ib tug kub kom ze tab sis me ntsis qis dua li lub ntsiab lus melting ntawm cov hlau siv. Nyob rau lub sijhawm no, microstructure ntawm cov khoom yuav hloov pauv, thiab ib qho kev tivthaiv thiab muaj zog nrog cov qhov ntev thiab muaj zog ntau.
Feem ntau hais lus, cov seem tau los ntawm hmoov metallurgy tuaj yeem siv ncaj qha rau cov kev xav tau, kom muaj zog, corrosion tsis kam thiab lwm yam khoom ntawm ntu.
Zoo ntawm hmoov metallurgy
Piv nrog lwm cov tshuab tsim kev lag luam, hmoov metallurgy tsim yuav luag tsis muaj cov khoom lag luam geometric ntau tshaj li 97%, thiab nws tuaj yeem cuam tshuam ncaj qha rau cov kev ua haujlwm hauv cov txheej txheem kev lag luam ib txwm muaj. Qhov no yog vim li cas peb thiaj hu nws nws cov tshuab tsim khoom ntsuab.
Ntxiv rau cov nyiaj khaws cia coj los ntawm cov txheej txheem no, hmoov metallurgurgy muaj nws tus kheej tsis sib xws. Nws siv qhov kom zoo ntawm nws cov khoom siv raw raws li hmoov uas nyuaj rau kev tswj cov tshuaj sib xyaw ua ke, tswj hwm microstructure, thiab kev tswj hwm ntawm porosity.
Cia siv qee cov khoom lag luam tshwj xeeb piv txwv los txhim kho txhua tus neeg nkag siab.
1. Cov ntaub ntawv sib txuas uas tsis tuaj yeem yaj ua ke
Hmoov metallurgy tso cai rau kev ua cov khoom sib txuas uas feem ntau tau suav hais tias yog tsis sib xws hauv daim ntawv sib xyaw ua ke. Pov thawj piv txwv ntawm xws li hmoov metallurgy cov ntawv thov muaj xws li:
Cov ntaub ntawv sib txhuam rau cov ntaub pua khoom nres thiab clutch ntsej muag qhov twg ntawm cov khoom tsis yog xim hlau
(Siv los cuam tshuam cov hnav tsis kam lossis tswj xyuas cov kev sib txhuam) yog embedded nyob rau hauv lub tooj liab lossis hlau matrix.
Cemented carbidesfeem ntau siv rau cov cuab yeej, ua cov cuab yeej lossis cov nyom. Lawv suav nrog theem nyuaj ua rau hlau, microstructure uas tsuas yog tsim los ntawm cov theem ua kua Sintering ntawm qhov kub melting ntawm lub cim. Tungsten carbide bonded rau cobalt yog qhov piv txwv tseem ceeb ntawm cov neeg carbides, thiab lwm yam ntawm cov carbonts li no suav nrog ntau yam ntawm kev cobalt (NI-CR, Nickel Cobalt, thiab lwm yam).
Pob zeb diamond tej cuab yeejQhov twg cov neeg muaj pob zeb diamond nyob qhov twg yog tusyees dispersed hauv hlau matrix. Ib zaug ntxiv, kua theem Sintering yog siv hauv kev ua cov ntaub ntawv no.Cov khoom siv hluav taws xob xws li tooj liab / Tungsten, Nyiaj / Cadmium oxide.
2. Ua cov ntaub ntawv nrog cov ntsiab lus zoo melting heev
Hmoov metallurgy thev naus laus zis tuaj yeem tsim cov ntaub ntawv nrog cov ntsiab lus zoo heev, suav nrog refractory hlau xws li tungsten, molybdenum thiab tantalum. Cov hlau cov hlau nyuaj yog qhov nyuaj los tsim los ntawm melting thiab casting, thiab feem ntau ntau nkig hauv lub xeev pov. Kev tsim cov tungsten billets yog ib qho ntawm cov ntawv thov thaum ntxov ntawm hmoov metallurgy, uas tau siv los kos cov xov hlau rau cov roj teeb tsis tau.
3. Cov khoom lag luam nrog kev tswj hwm porosity
Hmoov metallurgy thev naus laus zis tuaj yeem tsim cov khoom lag luam nrog tswj cov porosity txheej. Sintered lim lim cov ntsiab yog ib qho piv txwv ntawm cov ntawv thov no. Lwm qhov piv txwv tseem ceeb yog cov roj-tswj hwm lossis lub cev nqaij daim tawv ntawm cov hmoov metall
4. Cov khoom lag luam nrog cov khoom zoo dua
Hauv cov ntawv teev cov ntaub ntawv tshwj xeeb, hmoov metallurgy cov txheej txheem tuaj yeem tsim cov khoom muaj zog ntawm kev tswj hwm zoo nkauj ntawm lub micrenttructure, raws li tsis pom zoo rau cov kev pleev xim lossis forging cov txheej txheem. Cov piv txwv zoo ntawm cov ntawv thov yog:
Sib Nqus Cov Ntaub Ntawv
Yuav luag txhua tus nyuaj (ruaj khov) hlau nplaum thiab li 30% ntawm cov hlau muag muag tau ua tiav los ntawm hmoov noj qab zib.
High-ceev hlau
Hmoov metallurgurgurgurgy cov ntaub ntawv muaj cov ntaub ntawv zoo thiab muaj ntau cov microstructure dua forged cov khoom, nrog kev nruj dua thiab txiav kev ua haujlwm.
Npib tsib xee lossis cobalt-raws li cov kub siab-alloys
Siv lub cav nibales lossis cob qhia cov supalloys siv tau nyob rau hauv Aerospace cav tuaj yeem muab cov kev tswj hwm uas muaj pes tsawg leeg thiab cov khoom siv sib xyaw ua ke, yog li ua haujlwm ntau qhov kub thiab txias thiab ua haujlwm.
Txwv ntawm hmoov metallurgy
Txawm hais tias hmoov metallurgy muaj ntau yam zoo, tseem muaj qee qhov kev txwv hauv nws daim ntawv thov. Cov ntsiab lus tseem ceeb yog raws li hauv qab no:
1. Ib feem loj thiab qhov hnyav yog txwv:
Hmoov metallurgy yuav tsum tau cov txheej txheem nias, uas yuav siv xovxwm. Yog li ntawd, nws tau txwv los ntawm cov xovxwm tam sim no tonnage, thiab qhov loj me tsis tuaj yeem ua tau loj heev, feem ntau nyob ib ncig ntawm 250 hli ntawm feem ntau. Ib qho ntxiv, vim muaj kev txwv fluidity ntawm cov hmoov hlau, nws tseem nyuaj rau tsim cov chaw uas muaj ntau dua 20kg siv cov hmoov hlau metallurgy.
2. Tsis haum rau cov kev cuam tshuam thiab cov ntaub ntawv hloov pauv
Txij li thaum lub ntom ntawm hmoov metallurgy feem feem ntau yog tsawg, lawv lub zog thiab tawv tsis zoo li forged lossis machined seem. Lub pores tom qab cov hmoov sib piv thiab Sintering yuav tseem cuam tshuam rau cov khoom siv tshuab ntawm cov khoom siv. Qhov no ua rau hmoov metallurgy ntu uas haum rau kev siv kev ntxhov siab ntau ntxiv xws li kev cuam tshuam thiab kev cuam tshuam loj.
3. Cov khoom siv siab dua thiab cov nqi pwm
Cov txheej txheem ntawm hmoov metallurgy txiav txim siab tias nws yuav tsum siv cov khoom siv thiab khoom siv tshwj xeeb, thiab tus nqi yog qhov siab. Nws tsis yog kev lag luam me me hauv kev tsim khoom me me, yog li hmoov metallurgy feem ntau haum rau kev tsim khoom loj.(文章来源: Imchanics 机械)
