Kev sib xyaw ua ke ntawm cov ntaub ntawv tshawb fawb thiab kev tsim vaj tsev saum npoo av, forging ib qho kev phais kev phais uas tsis tau muab rau hauv.

Tshaj tawm ntawm Cov Lus Qhia

Peb tau ua tiav kev txiav- cov ntaub ntawv ntug kev tshawb fawb nrog cov thev naus laus zis kho mob, tso tawm "Pob Zeb Diamond" series ntawm kev kho mob siab- nro stainless hlau slotted rigid tubes. Cov khoom no yog tsim los ntawm cov qib tshwj xeeb metallurgical qib 304V / 316L stainless hlau thiab txais cov patented "deformation - theem transformation" synergistic strengthening txheej txheem, uas ua rau cov khoom muaj zog yield mus rau ntau tshaj 1300 MPa thaum tuav tus nqi elongation ntawm 15%. Ua ke nrog nano- theem kev sib xyaw ntawm qhov chaw kho mob, kev sib txhuam coefficient raug txo los ntawm 60%, thiab biocompatibility mus txog qhov ntsuas siab tshaj plaws. Nws muab cov khoom siv zoo tshaj plaws rau kev cog qoob loo- qib khoom siv uas yuav tsum tau ua haujlwm nyob rau hauv ib puag ncig hnyav thiab tshuaj lom neeg rau lub sijhawm ntev.

Kev Tshawb Fawb thiab Kev Txhim Kho Tom Qab Kev Sib Tw

Cov hlua sab hauv nruj ntawm siab -kawg cov cuab yeej kho mob tau ntev tau txwv los ntawm "cov nyhuv qab nthab" ntawm cov khoom siv. Cov kev kho mob tsis zoo steel hlau (xws li 316L) muab cov biocompatibility zoo heev thiab corrosion kuj, tab sis nws lub zog (feem ntau lub zog tawm los yog li 690 MPa) tsis txaus kom tau raws li qhov xav tau huab cua rau kev txhaj tshuaj thiab khoov tsis kam ua los ntawm cov khoom siv hnyav thiab cov khoom siv me me. Tsuas yog ua kom cov phab ntsa tuab yuav ua rau cov cuab yeej cumbersome thiab nqaim sab hauv kab noj hniav, thiab tseem tsis tuaj yeem daws qhov kev pheej hmoo ntawm nkig tsis ua haujlwm nyob rau hauv kev ntxhov siab. Ntxiv mus, qhov ntxhib los yog tsis raug kho qhov chaw tsis yog lub hauv paus chiv keeb ntawm kev qaug zog tawg, tab sis lawv cov kev sib txhuam coefficient siab kuj cuam tshuam qhov kev sib tw ntawm cov cuab yeej los ntawm cov ntaub so ntswg thiab yuav ua rau cov ntaub so ntswg tsis tsim nyog los yog thrombosis txaus ntshai. Cov ntaub ntawv tau dhau los ua lub hauv paus tseem ceeb hauv kev txwv tsis pub muaj kev ua tau zoo ntawm cov hlab ntsha hauv lub cev.

Core Technological Innovation

• Microalloying thiab tswj dov thiab txias (TMCP) txheej txheem:Kev sib koom ua ke nrog cov tuam txhab hlau sab saum toj, raws li 316L stainless hlau, meej ntxiv cov lej ntawm vanadium (V), niobium (Nb), thiab lwm yam raws li carbide - tsim cov ntsiab lus. Los ntawm lub tshiab "deformation-induced theem transformation" thiab tswj dov thiab txias tshuab, cov qauv sib xyaw nrog ultrafine-grained austenite matrix thiab nano-scale carbon nitride dispersed tis yog tau nyob rau hauv cov khoom. Cov qauv no yuav ua kom zoo dua cov nplej loj ntawm cov khoom kom qis dua 2 micrometers, thiab qhov loj ntawm nano precipitated theem yog tsawg dua 50 nanometers. Los ntawm cov nyhuv synergistic ntawm nplua nplej ntxiv dag zog thiab nag lossis daus ntxiv, cov khoom siv lub zog raug thawb mus rau qhov txwv tsis muaj kev puas tsuaj rau lub zog thiab corrosion kuj.
• Kev kho mob khaub thuas sib sib zog nqus thiab ntau- txheej txheem kev laus:Tom qab qhov tseeb slotting, qhia txog -196℃tob tob kev kho mob theem los txhawb kev hloov pauv ntawm cov seem austenite rau martensite, ntxiv dag zog rau cov matrix, thiab tso cov kev ntxhov siab. Tom qab ntawd, ua ntau yam -theem precision aging kev kho mob los ntawm kev tswj cov muaj pes tsawg leeg, qhov loj thiab kev faib tawm ntawm cov theem precipitated, ua tiav "zoo-tuning" ntawm cov khoom siv zog, elastic modulus thiab qaug zog txwv. Cov txheej txheem no ua rau cov yeeb nkab kom ua tiav lub zog zoo li qub thaum ua kom nws lub neej qaug zog nyob rau hauv kev thauj khoom los ntawm 200%.
• Multi-layer gradient functional coating technology:Tsim ib qho "passivation-doping- kev sib txhuam ultralow" peb- theem kev kho saum npoo. Ua ntej, ua electrochemical passivation los tsim ib qho ruaj khov, ntom thiab chromium- nplua nuj oxide txheej, nteg lub hauv paus rau corrosion kuj; Tom qab ntawd, siv plasma immersion ion implantation thev naus laus zis rau gradient- faib cov nitrogen thiab cov ntsiab lus carbon rau hauv kaum ntawm nanometers qhov tob ntawm txheej txheej, tsim cov pob zeb diamond- zoo li amorphous qauv, ua kom lub ntsej muag hardness siab dua HV 1200; Thaum kawg, graft super-hydrophilic/super-lubricating polymer txhuam, tsim ib tug ruaj khov hydrated lubricating txheej nyob rau hauv lub cev kua ib puag ncig, txo cov qhuav kev sib txhuam coefficient mus rau hauv qab no 0.05 thiab cov ntub kev sib txhuam coefficient mus rau hauv qab 0.01.

Mechanism ntawm Action

Qhov kev ua tau zoo ntawm cov khoom no yog los ntawm cov khoom siv thoob ntiaj teb kev tsim kho los ntawm cov theem ntau mus rau txheej txheej. Nyob rau theem ntau, ultrafine crystals thiab nano precipitated theem tau tsim ib lub moj khaum muaj zog thiab zoo li microstructure, cuam tshuam kev txav txav txav, ua rau cov khoom siv los tuav elastic deformation thaum raug loads siab heev, thiab ncua qhov tshwm sim ntawm cov khoom yas thiab tawg. Nyob rau theem mesoscopic, microstructure tom qab kev kho cua sov tshwj xeeb muaj cov nyhuv Bauschinger qis, txhais tau hais tias nws lub zog attenuation me dua thaum raug rov ua kom nruj thiab compression loads, thiab nws cov qaug zog kuj zoo heev. At the surface interface level, the gradient functional coating has constructed a "flexible and rigid" protective system: the inner layer of the hardened layer resists scratches and wear, the middle layer of the bonding layer ensures the adhesion of the coating, and the external layer of the ultra-lubricating layer minimizes the mechanical interlocking and adhesion with biological tissues, achieving the ideal state of "strong but not nplaum,” uas tiv thaiv ob lub cuab yeej thiab cov ntaub so ntswg.

Kev txheeb xyuas qhov ua tau zoo

Cov txiaj ntsig ntawm kev ntsuas cov khoom yog qhov zoo tshaj plaws: Hauv kev sim tensile, lub zog tawm los tseem nyob ruaj khov nyob rau hauv thaj tsam ntawm 1300-1400 MPa, lub zog tensile tshaj 1500 MPa, cov qauv elongation tus nqi zoo dua 15%, thiab lub zog - rau-plasticity khoom (cov khoom lag luam. Kev ntsuas kev sib hloov ntawm kev qaug zog tau pom tias nws txoj kev qaug zog tom qab 10 ^ 7 lub voj voog yog siab li 550 MPa, uas yog 2.5 npaug ntawm cov khoom siv. Kev ntsuam xyuas electrochemical polarization hauv simulated lub cev kua (PBS, 37 degree) qhia tias nws lub peev xwm pitting tshaj 1000 mV, qhov corrosion tam sim no ceev yog tsawg li 10^-8 A / cm², thiab corrosion kuj zoo heev. Kev sim tsiaj cog qoob loo (6 lub hlis) tau pom tias cov lus teb inflammatory ntawm cov ntaub so ntswg ib puag ncig yog me me, cov tshuaj fiber ntau yog nyias thiab sib xws, thiab tsis muaj cov cim qhia ntawm cov khoom siv corrosion. Hauv kev sim tshuaj ntsuam xyuas, lub raj qis ua los ntawm cov khoom siv no ua tau zoo nyob rau hauv cov pob txha xyaum qhia, thiab tsis muaj cov khoom siv khib nyiab tau tsim txawm tias nyob rau ntawm qhov siab tshaj plaws kev sib hloov ceev thiab pub siab, thiab kev tiv thaiv kom tshem tawm cov pob txha raug txo los ntawm 70%.

Kev tshawb fawb thiab kev loj hlob Strategy thiab Philosophy

Peb ntseeg ruaj khov tias "cov khoom siv yog cov noob ntawm cov khoom siv." Peb qhov kev tshawb fawb thiab kev tsim kho lub tswv yim yog "tag nrho-chain khoom innovation los ntawm atoms mus rau cov khoom siv." Peb tsis txaus siab rau tsuas yog ua cov txheej txheem cov ntaub ntawv qib; Hloov chaw, peb sib zog koom nrog tag nrho cov txheej txheem ntawm cov khoom tsim, smelting, ua, thiab kho. Peb koom tes nrog cov koom haum tshawb fawb saum toj kawg nkaus hauv metallurgy, chemistry ntawm lub cev, thiab tribology kom nkag siab thiab tswj tus cwj pwm ntawm cov khoom ntawm micro-nano nplai. Peb lub tswv yim yog: rau txhua qhov kev sib tw kho mob tshwj xeeb, kho qhov tsim nyog tshaj plaws "cov khoom siv noob." Qhov no xav kom peb tsis yog tsuas yog yuav tsum paub txog cov txheej txheem tsim khoom nkaus xwb tab sis kuj los ua cov kws tshaj lij thiab cov neeg tsim kho tshiab hauv cov khoom siv tshawb fawb, kom ntseeg tau tias peb cov khoom tau npaj rau kev ua tau zoo kawg ntawm qib molecular.

Yav tom ntej Outlook

Saib mus rau yav tom ntej, peb tab tom hloov los ntawm "siab-cov ntaub ntawv ua tau zoo" mus rau "cov ntaub ntawv ntse ntse." Peb tau cog lus los tsim cov ntaub ntawv sib xyaw nrog tus kheej - kev paub muaj peev xwm, xws li embedding faib cov khoom siv fiber ntau hauv cov hlau matrix, ua rau cov yeeb nkab nws tus kheej yog cov neeg nqa khoom ntse rau kev hnov ​​​​kev ntxhov siab thiab kub. Tib lub sijhawm, peb tab tom tsim cov khoom siv bioactive los ntawm kev thauj cov tshuaj tua kab mob ions (xws li nyiaj, zinc) lossis txhawb cov pob txha tsim cov yam ntxwv (xws li BMP-2), kom cov yeeb nkab sab hauv nruj tuaj yeem koom tes hauv kev tiv thaiv kab mob lossis cov ntaub so ntswg kho thaum ua tiav nws lub luag haujlwm txhawb nqa tshuab. Ntau qhov kev cia siab, peb tab tom tshawb nrhiav "4D luam ntawv" cov qauv ntse raws li cov duab nco alloys lossis cov ntaub ntawv electrostrictive, aiming los tsim cov tiam tom ntej ntawm cov ntse phais shafts uas muaj peev xwm autonomously kho lub zos nruj los yog cov duab thaum lub sij hawm tseem ceeb phais cov kauj ruam raws li preset cov kev pab cuam los yog lwm yam stimuli (xws li lub cev kub, hluav taws xob teb).