Nyob rau hauv kev tsim ntawm aerospace cav hniav, titanium alloy hniav raug rau lub tshuab nqus tsev kho mob yuav tsum tiv taus kub ntawm 1500℃thiab 100,000 cyclic loads; Nyob rau hauv kev ua ntawm automotive kis tau tus mob gears, lub tshuab nqus tsev quenching tshuab tso cai rau lub iav nto hardness mus txog 60 HRC thaum tuav ib tug core toughness ntawm 35 HRC. Cov kev ua tau zoo no tshwm sim nyob rau hauv cov xwm txheej hnyav tag nrho los ntawm "oxygen-dawb, qhov chaw ntshiab" tsim los ntawm lub tshuab nqus tsev kho cua sov. Qhov kev siv thev naus laus zis no, uas ua ke nrog lub tshuab nqus tsev thiab cov txheej txheem kho cua sov, yog redefining cov kev txwv ntawm cov ntaub ntawv hlau.
I. Lub ntsiab lus tseem ceeb ntawm kev kho cua sov lub tshuab nqus tsev
Kev kho cua sov lub tshuab nqus tsev yog txheej txheem cua sov, tuav, thiab txias cov ntaub ntawv hlau nyob rau hauv ib puag ncig kaw ntawm lub siab qis dua atmospheric siab (feem ntau 10⁻² txog 10⁻⁵ Pa). Nws lub hauv paus yog nyob rau hauv kev siv lub tshuab nqus tsev twj tso kua mis kom tshem tawm cov pa oxygen, dej vapor, thiab lwm yam pa roj carbon monoxide los ntawm lub cub tawg, tsim kom muaj ib qho chaw dawb huv nyob ze ntawm qhov chaw sab nrauv. Ib qho kev khiav dej num ib txwm muaj xws li rau theem tseem ceeb:
1. Nqus Pumping Stage: Ib tug multi-theem lub tshuab nqus tsev twj tso kua mis txo lub cub tawg siab mus rau qhov kev txiav txim ntawm 10⁻³ Pa, sib npaug rau ib billionth ntawm lub atmospheric siab ntawm lub ntiaj teb nto.
2. Kev kho degassing: Thaum lub sij hawm tuav ntawm 300-500 degree, yaj roj xws li hydrogen thiab oxygen hauv cov hlau raug tso tawm thiab tso tawm. Tom qab qhov kev kho no, cov ntsiab lus hydrogen ntawm ib qho aerospace bearing steel yog txo kom qis dua 0.5 ppm.
3. Siab-Tsuas Kub: Lub workpiece yog rhuab mus rau lub hom phiaj kub siv lub graphite rhaub los yog induction cua sov. Cov cua kub ntawm ib qho siab - kub alloy hniav yog precisely tswj ntawm 5℃/ min.
4. Kev Ua Haujlwm Tshwj Xeeb: Piv txwv li, thaum lub tshuab nqus tsev carburizing, acetylene roj tau qhia, thiab carburized txheej qhov tob ntawm 0.1 hli yog ua tiav los ntawm kev tswj cov pa roj carbon ntau.
5. Controllable Cooling: High-siab nitrogen gas quenching ntawm 600 kPa yog siv, thiab ib nrab -lub sij hawm txias (lub sij hawm nws yuav siv sij hawm rau cov tub ntxhais kub mus txog 500 degree) ntawm ib tug tej yam iav workpiece yog shortened mus rau 2 feeb.
6. Tom qab-Kev kho mob: Tom qab sau nrog siab -purity argon roj kom sib npaug ntawm qhov siab, lub qhov cub qhib. Lub workpiece nto nthuav tawm ib daim iav -zoo li tiav, tshem tawm qhov xav tau rau polishing tom ntej.
II. Kev tsom xam ntawm Tsib Qhov Zoo Tshaj Plaws. Pure Processing tsis muaj Oxidation thiab Decarburization
Nyob rau hauv ib qho chaw nqus ntawm 10⁻³ Pa, cov pa ib feem ntawm lub siab yog qis dua qhov decomposition siab ntawm hlau oxide (kwv yees li 10⁻¹⁸ Pa), tshem tawm cov tshuaj tiv thaiv oxidation tag nrho. Tom qab nqus tsev vacuum annealing, nto roughness Ra tus nqi ntawm stainless hlau valve txo los ntawm 3.2 μm mus rau 0.8 μm, ncaj qha ntsib daim iav - ua tiav cov qauv. Piv nrog rau kev kho cov tshuaj ntsev da dej rauv, cov oxide nplai thickness txo los ntawm 0.2 hli mus rau xoom, thiab cov khoom siv tau nce 15%.
2. Kev ua tau zoo Leap los ntawm Degassing thiab Purification
Lub 1000-fold atmospheric siab sib txawv tsim nyob rau hauv lub tshuab nqus tsev ib puag ncig quab yuam hydrogen atoms nyob rau hauv cov hlau kom diffuse rau saum npoo. Tom qab lub tshuab nqus tsev tempering, cov ntsiab lus hydrogen ntawm lub caij nplooj ntoos hlav steel poob los ntawm 8 ppm rau 0.2 ppm, thiab kev tiv thaiv kom ncua kev puas tsuaj tau nce 3 zaug. Hauv kev tsim cov khoom siv hluav taws xob hluav taws xob hluav taws xob, lub tshuab nqus tsev degassing tau nce cov khoom cuam tshuam los ntawm 30 J / cm² txog 80 J / cm².
3. Precision-Controlled Microstructure Engineering
Los ntawm kev kho lub tshuab nqus tsev kawm ntawv thiab cov roj muaj pes tsawg leeg, tus qauv tsim ntawm microstructure yuav ua tiav:
• Nqus Nitriding: Qhia cov pa roj ammonia nyob rau hauv lub tshuab nqus tsev ntawm 0.133 Pa tsim ib qho -theem ε compound txheej. Lub hardness nto ntawm ib yam pwm hlau mus txog 1500 HV, thiab nws hnav tsis kam yog ob npaug ntawm cov pa nitriding.
• Ion Carburizing: Siv cov pa roj carbon monoxide tsim los ntawm lub teeb ci, ib txheej txheej 0.8 hli carburized yog tsim rau ntawm iav nto, nrog cov pa roj carbon concentration gradient tswj nyob rau hauv 0.1% / hli.
• Gradient Heat Treatment: Los ntawm kev tswj lub tshuab nqus tsev nyob rau theem, 10 μm nanocrystalline txheej yog tsim rau ntawm qhov chaw ntawm ib lub dav hlau hniav, thaum lub hauv paus tseem tuav ib co ntxhib -grained qauv, ua tiav qhov zoo tshaj plaws match ntawm lub zog thiab toughness.
4. Dimensional Accuracy los ntawm Micro-Deformation Manufacturing
Lub uniformity ntawm lub tshuab nqus tsev cua sov txo qhov kev kho cua sov deformation ntawm ib tug complex nkhaus nto ib feem ntawm 0.3 hli nyob rau hauv ntsev da dej quenching rau 0.05 hli. Hauv kev tsim cov cuab yeej ntsuas ntsuas qhov tseeb, qhov hloov pauv ntawm qhov ntsuas ntsuas tom qab kev kho lub tshuab nqus tsev yog tswj tsis pub dhau ± 1 μm, ncaj qha ua tiav kev ntsuas qhov tseeb. Tom qab lub tshuab nqus tsev kho cua sov, qhov kev ua yuam kev ncaj ntawm qee lub tsheb tsav tsheb tau txo qis los ntawm 0.5 mm / m txog 0.1 mm / m . 5. Environmental Revolution of Green Manufacturing
Kev kho cua sov lub tshuab nqus tsev kom tshem tawm cov pa phem ntawm cyanide los ntawm cov ntsev da dej rauv thiab cov ammonia emissions los ntawm kev tswj cov cua sov. Lub tshuab nqus tsev loj tuaj yeem txo CO₂ emissions los ntawm 120 kg thiab nitrogen oxide emissions los ntawm 90% hauv ib qho kev kho mob. Hauv kev tsim khoom siv hluav taws xob, lub tshuab nqus tsev vacuum txo cov splatter los ntawm 95%, thiab cov khoom dhau los nce mus rau 99.8%.
III. Cov kev hloov pauv hauv kev siv thev naus laus zis
Aerospace Field
GE's LEAP cav turbine hniav, tsim siv lub tshuab nqus tsev kho cua sov, ua haujlwm ntawm qhov kub txog li 1700℃thiab muaj lub neej ntev tshaj 20,000 teev. Qhov tseem ceeb yog tias lub tshuab nqus tsev ib puag ncig suppresses siab -kub oxidation, thaum lub ntsuas kub tswj tau ua tiav nanoscale nag lossis daus ntawm 'theem.
Tshiab Zog Tsheb Kev Lag Luam
Tesla lub cev muaj zog rotors siv lub tshuab nqus tsev carburizing, tsim cov qauv martensite + carbide sib xyaw ua ke hauv 0.3mm txheej txheej, ua kom lub cev muaj zog los ntawm 12,000 rpm mus rau 18,000 rpm. BYD's blade roj teeb aluminium alloy casing, tom qab lub tshuab nqus tsev quenching, pom nws qhov cuam tshuam lub zog ua haujlwm nce ntawm 5J txog 15J.
Kev tsim khoom siv kho mob
Tom qab lub tshuab nqus tsev kho cua sov, cov khoom sib koom ua ke cobalt-chromium- molybdenum alloy tsim 10μm zirconium oxide passivation txheej ntawm nws qhov chaw, ua tiav ob zaug ntawm kev tiv thaiv corrosion ntawm ASTM F1537 tus qauv. Ib qho kev cog qoob loo uas kho nrog lub tshuab nqus tsev plasma nitriding qhia tau hais tias 40% nce hauv cov pob txha sib xyaw ceev thiab 30% txo qis hauv lub sijhawm kho tom qab.
IV. Yav tom ntej Prospects ntawm Technological Development
Tam sim no, lub tshuab nqus tsev kub kho tshuab tau tawg los ntawm peb cov lus qhia:
1. Ultra-siab- siab roj quenching tshuab: Lub 20MPa ultra- siab- siab roj quenching cub tsim los ntawm ALD nyob rau hauv lub teb chaws Yelemees tuaj yeem txo cov quenching deformation ntawm ib qho siab - alloy steel rau 0.02mm.
2. Kev tswj xyuas ntse: Los ntawm kev ntsuas kub infrared thiab AI algorithms, tiag -lub sijhawm kaw- voj tswj ntawm lub tshuab nqus tsev degree, qhov kub thiab txias, thiab roj ntws tau tiav, ua rau cov txheej txheem rov ua dua ntawm ± 5℃rau qhov nyuaj.
3. Cov txheej txheem kev sib xyaw ua ke: Kev sib xyaw ua ke ntawm lub tshuab nqus tsev kho cua sov nrog kev tsim khoom ntxiv, ib qho kev siv lub tshuab aerospace siv lub laser cladding + lub tshuab nqus tsev kho cua sov txheej txheem, nce kev siv cov khoom siv los ntawm 30% mus rau 85%. Hauv qhov kev hloov pauv ntawm cov ntaub ntawv tshawb fawb, lub tshuab nqus tsev kho cua sov ua haujlwm zoo li tus kws phais neeg, tswj cov "genes" ntawm cov hlau ntawm nanoscale. Thaum lub tshuab nqus tsev- kho aerospace ntsia liaj qhov rooj tiv thaiv lub zog tensile ntawm 20 tons, nws qhov chaw tseem tuav cov atomic-theem purity- qhov no yog qhov tseeb ntawm kev tsis txaus siab ntawm qhov kev ua tau zoo hauv kev lag luam niaj hnub no. Nrog kev ua tiav hauv lub tshuab nqus tsev, kev tswj xyuas cov cuab yeej ntse, thiab cov ntaub ntawv tshiab, cov cuab yeej no tau npaj los thawb ntau qhov chaw tshaj qhov tseem ceeb ntawm kev ua tau zoo, coj mus rau lub sijhawm tshiab ntawm cov ntaub ntawv ntxiv dag zog.
Tiv tauj peb
Yog xav paub ntxiv, thov hu rau peb ntawmmetal@welongpost.com.
