Qib Kho MobGr5 ELI (Ti-6Al-4V ELI, UNS R56401)titanium tuav thiab daim hlau yuav tsum nruj ntau lawm thiab cov txheej txheem kuaj kom tau raws li cov qauv zoo liASTM F136TS EN ISO 5832-3 (rau kev phais phais) thiab ISO 5832-3. Hauv qab no yog cov ncauj lus kom ntxaws txog cov txheej txheem tsim khoom, cov cuab yeej xav tau, cov theem kev sim, thiab cov khoom siv sib xws.
Cov txheej txheem ntau lawm & Cov khoom siv sib xws
1.1Raw Material Preparation (Raw Material Smelting & Ingots)
Lub Hom Phiaj Txheej Txheem: Ua kom muaj siab -purityTi-6Al-4V ELI alloyingots nrog qis qis interstitial (ELI) cov ntsiab lus (O Tsawg dua lossis sib npaug rau 0.13%, C Tsawg dua lossis sib npaug rau 0.08%, N Tsawg dua lossis sib npaug rau 0.05%, H Tsawg dua lossis sib npaug 0.0125%).
Cov kauj ruam tseem ceeb:
Batching: Mix sponge titanium (Ntau dua lossis sib npaug rau 99.7% purity), aluminium ingots (Ntau dua lossis sib npaug rau 99.95% purity), thiab vanadium alloy (V-Ti master alloy) rauTi-6Al-4V ELImuaj pes tsawg leeg.
Nqus arc remelting (VAR): Melt lub batch 2-3 zaug nyob rau hauv lub nqus tsev vacuum kom tshem tawm impurities (xws li, roj, inclusions) thiab xyuas kom meej ib tug uniformity.
Cov Khoom Siv Yuav Tsum Tau:
Nqus Arc Remelting Rauv (VAR Rauv): Nrog lub tshuab nqus tsev kawm ntawv tsawg dua lossis sib npaug ntawm 1 × 10⁻³ Pa, tswj qhov kub thiab txias ± 5 degree, kom ua tiav siab - purity melting.
Cov khoom xyaw tov khoom: Rau qhov tseeb proportioning ntawm daim txhuam cev Ti, Al, thiab V alloys (yuam kev Tsawg dua los yog sib npaug rau ± 0.1%).
Ingot Molding Tuag: Thaum tshav kub kub-resistant graphite lossis tooj liab tuag, customized rau ingot loj (xws li, Φ300-800mm, ntev 1000-3000mm).
1.2Kev Ua Haujlwm Kub Kub (Kev Ua Bars & Phaj)
1.2.1Forging (Ingot rau Semi-Cov khoom tiav)
Process Objective: Break ingot coarse grains, improve material density (relative density>=99.5%), and form initial shapes (billets for bars/plates).
Cov kauj ruam tseem ceeb:
Ingot cua sov: Kub ingots rau 950-1050℃(+ theem cheeb tsam ntawmTi-6Al-4V ELI) thiab tuav rau 2-4 teev rau qhov kub thiab txias.
Kub forging: Siv xovxwm forging los tsim ingots rau hauvΦ50-200 hlilos yogphaj billets (thickness 20-100mm, dav 300-1000mm).
Cov Khoom Siv Yuav Tsum Tau:
Hluav taws xob Resistance Heating Rauv: Nrog kub tswj ntau yam 800-1200 degree, haum rau loj ingot cua sov.
Hydraulic Forging Xovxwm: 1000-5000 tons, nrog precision txoj hauj lwm tswj (yuam kev Tsawg dua los yog sib npaug rau ± 0.5mm) rau uniform forging.
Forging Dies: Thaum tshav kub kub- kho H13 steel tuag, nrog rau cov cua txias kom tiv thaiv kev tuag.
1.2.2 Rolling (Semi-Cov khoom tiav mus rau qhov kawg Bars/Plates)
Txheej Txheem Lub Hom Phiaj: Ua kom zoo nplej, tswj qhov kawg qhov ntev (piv txwv li, bar txoj kab uas hla kam rau ua ± 0.1mm, phaj thickness kam rau ua ± 0.05mm), thiab txhim kho qhov zoo.
Cov kauj ruam tseem ceeb rau Bars:
Kub dov: Roll bar billets ntawm 850-950℃kom txo txoj kab uas hla kauj ruam-by-step (piv txwv li, Φ100mm → Φ50mm).
Kev kos duab txias (yeem): Rau siab- cov khoom muaj tseeb (piv txwv li, Φ10-30mm), ua kom txias txias ntawm chav tsev kub los txhim kho qhov raug.
Cov kauj ruam tseem ceeb rau cov phaj:
Kub dov: Roll phaj billets ntawm 850-950℃kom txo cov thickness (xws li, 50mm → 10mm) thiab nthuav dav.
Txias dov (yeem): Rau nyias daim hlau (thickness Tsawg dua los yog sib npaug li 5 hli), txias yob kom tiav Ra Less dua los yog sib npaug rau 0.8μm nto roughness.
Cov Khoom Siv Yuav Tsum Tau:
Kub Rolling Mill:
Rau cov tuav: Multi- sawv ntsug rolling mills (3-5 stands), nrog yob txoj kab uas hla 200-500mm.
Rau daim hlau: Plaub-siab reversible dov zeb, nrog rau txoj kab uas hla 150-300mm thiab dav 1000-2000mm.
Txias Drawing Tshuab (rau cov tuav): Nrog rau kev kos duab quab yuam 50-200kN, nruab nrog tuag lubrication system.
Txias Rolling Mill (rau daim hlau): Ob-siab lossis plaub- siab zeb, nrog precision yob qhov sib txawv (± 0.01mm).
1.3 Kev kho cua sov (Performance Optimization)
Lub Hom Phiaj Txheej Txheem: Kho cov khoom siv kho tshuab (lub zog tensile Ntau dua lossis sib npaug rau 860MPa, yield zog Ntau dua lossis sib npaug rau 795MPa, elongation Ntau dua lossis sib npaug li 10%) thiab tshem tawm kev ntxhov siab sab hauv.
Cov kauj ruam tseem ceeb:
Annealing: Kub tuav / phaj rau 700-750 degree, tuav rau 1-2 teev, ces txias hauv huab cua (rau kev ntxhov siab) los yog lub cub tawg-txias (rau cov khoom softer).
Kev kho mob + kev laus (yeem): Rau siab - siv zog, cua sov rau 920-950℃(kev daws teeb meem), dej quench, ces hnub nyoog ntawm 500-550℃rau 4-8 teev.
Cov Khoom Siv Yuav Tsum Tau:
Lub tshuab nqus tsev kub kho cua sov: Nrog lub tshuab nqus tsev kawm ntawv tsawg dua lossis sib npaug ntawm 5 × 10⁻³ Pa, kom tsis txhob muaj oxidation (kev kho mob Ti yuav tsum tsis muaj oxide nplai).
Kub Controller: Nrog PID tswj, qhov tseeb ± 2 degree, kom ntseeg tau tias kev kho cua sov zoo ib yam.
Quenching Tank: Rau dej quenching (kev kho kev daws teeb meem), nrog kev tswj kub (20-30 degree) los tiv thaiv cov khoom deformation.
1.4Kev Kho Hniav (Hygiene & Biocompatibility)
Lub Hom Phiaj Txheej Txheem: Tshem tawm qhov tsis xws luag (piv txwv li, nplai, khawb), txhim kho corrosion kuj, thiab ua tau raws li cov qauv kev kho mob.
Cov kauj ruam tseem ceeb:
Pickling: Raus dej hauv cov kua qaub sib xyaw (HNO₃ + HF) kom tshem tawm cov nplai oxide thiab cov impurities saum npoo (pickling sij hawm 5-15 feeb).
Passivation: Kho nrog nitric acid (20-30% concentration) los ua ib tug tuab TiO₂ zaj duab xis (thickness 5-10nm) rau corrosion kuj.
Polishing (yeem): Rau cog- cov khoom qib, ua cov tshuab polishing (Ra Tsawg dua lossis sib npaug li 0.2μm) lossis electrochemical polishing.
Cov Khoom Siv Yuav Tsum Tau:
Pickling Tank: Acid-resistant PP lossis titanium tank, nrog rau qhov cua kom tshem tawm cov pa taws.
Passivation Tank: Cov khoom siv tib yam li pickling tank, nrog kev tswj kub (25-40 degree).
Polishing tshuab:
Mechanical: Siv txoj siv tawv (rau cov tuav) lossis phaj polisher, nrog cov hlua khi (800-1200 grit).
Electrochemical: Titanium electrode polishing khoom, nrog voltage tswj (10-30V).
Khoom Description
2. Cov txheej txheem kuaj & cov khoom siv sib xws
2.1Chemical Composition Test
Lub Hom Phiaj Xeem: Tshawb xyuas kev ua raws li Gr5 ELI muaj pes tsawg leeg (Al: 5.5-6.75%, V: 3.5-4.5%, interstitial cov ntsiab lus Tsawg dua lossis sib npaug rau qhov txwv) thiab kuaj pom muaj teeb meem impurities (xws li Fe Tsawg dua lossis sib npaug rau 0.25%).
Test Methods & Khoom siv:
Optical Emission Spectrometry (OES):
Khoom siv: OES Spectrometer (piv txwv li, Bruker Q4 TASMAN), kuaj 20+ cov ntsiab lus hauv 1-2 feeb, qhov tseeb ± 0.01%.
Inert Gas Fusion (IGF):
Khoom siv: IGF Analyzer (piv txwv li, LECO TC600), ntsuas O, N, H cov ntsiab lus (nrhiav txwv 0.1ppm).
Carbon / Sulfur Analyzer:
Khoom siv: CS Analyzer (piv txwv li, LECO CS844), kuaj C cov ntsiab lus (nrhiav txwv 0.001%).
2.2 Mechanical Property Testing
Lub Hom Phiaj Xeem: Ua kom lub zog tensile, tawm lub zog, elongation, thiab hardness raws li ASTM F136 cov cai.
Test Methods & Khoom siv:
Tensile Test:
Khoom siv: Universal Testing Tshuab (piv txwv li, Instron 5982), nrog lub peev xwm thauj khoom 100-500kN, ntsuas kev ntxhov siab-txoj kab nkhaus thiab suav tensile/yield zog, elongation.
Qauv: Dumbbell{0}}zoo li tus qauv (ASTM E8 tus qauv).
Hardness Test:
Khoom siv: Vickers Hardness Tester (xws li Wilson VH1102), kuaj HV hardness (load 10kgf, nyob lub sij hawm 10s), yuav tsum tau HV 280-340.
Impact Test (yeem):
Khoom siv: Charpy Impact Tester (piv txwv li, Instron CEAST 9050), ntsuas qhov cuam tshuam toughness (Ntau dua lossis sib npaug rau 10J / cm² ntawm chav sov).
2.3 Kev Ntsuas Microstructure
Lub Hom Phiaj Xeem: Tshawb xyuas cov qoob loo loj (tsawg dua lossis sib npaug ntawm 50μm), theem faib (uniform + theem), thiab tsis muaj qhov tsis xws luag (xws li, suav nrog, tawg).
Test Methods & Khoom siv:
Kev npaj Metallographic:
Khoom siv: Sib tsoo tshuab (rau cov qauv sib tsoo), Polishing Tshuab (nrog pob zeb diamond muab tshuaj txhuam, 1-0.25μm), Etching Tank (etchant: Kroll's reagent - 1-3% HF + 2-6% HNO₃+ H₂O).
Microstructure Observation:
Khoom siv: Optical Microscope (xws li Olympus BX53M), nrog 100-1000 × magnification; Scanning Electron Microscope (SEM, eg, Zeiss Sigma 300) rau kev soj ntsuam siab (yeem).
2.4Dimensional & Surface Quality Testing
Lub Hom Phiaj Xeem: Ua kom qhov ntev raws li qhov yuav tsum tau ua thiab qhov chaw tsis muaj qhov tsis xws luag (xws li khawb, qhov pits).
Test Methods & Khoom siv:
Dimensional Kev Ntsuas:
Rau cov tuav: Digital Caliper (qhov tseeb ± 0.01mm) rau txoj kab uas hla; Laser Diameter Gauge (xws li Keyence LS-9000) rau kev ntsuas tas mus li (ceev 1000 zaug / thib ob).
Rau daim hlau: Thickness Gauge (piv txwv li, Mitutoyo ID-C112) rau thickness; Coordinate Measuring Machine (CMM, piv txwv li, Hexagon Ntiaj Teb S) rau 3D qhov tseeb qhov tseeb (yuam kev tsawg dua lossis sib npaug ± 0.005mm).
Surface Roughness Test:
Khoom siv: Surface Roughness Tester (piv txwv li, Mitutoyo SJ-210), ntsuas Ra, Rz qhov tseem ceeb (ntaus ntau yam 0.001-20μm).
Kev tshuaj xyuas qhov muag:
Khoom siv: Siab-Lub Koob Yees Duab lossis Lub Tshuab Ntsuas Ntsuas, kuaj xyuas qhov tsis xws luag (qhov loj me me dua lossis sib npaug li 0.1mm yog qhov lees txais).
2.5 Corrosion Resistance Testing (Qhov tseem ceeb rau kev siv kho mob)
Lub Hom Phiaj Xeem: Txheeb xyuas qhov ua rau lub cev muaj zog corrosion (simulate hauv -ib puag ncig vivo).
Test Methods & Khoom siv:
Potentiodynamic Polarization Test:
Khoom siv: Electrochemical Workstation (piv txwv li, Gamry Reference 600), kev sim hauv simulated lub cev kua (SBF tov, 37 degree), ntsuas corrosion tam sim no ntom (tsawg dua los yog sib npaug rau 1 × 10⁻⁶ A / cm²).
Neutral Salt Spray Test (NSS):
Khoom siv: Salt Spray Chamber (piv txwv li, Q-FOG CRH), tshuaj tsuag 5% NaCl tov (35 degree), yuav tsum tsis muaj corrosion rau ntau tshaj los yog sib npaug rau 200 teev.
2.6Tsis yog -Kev Ntsuam Xyuas Kev Ua Phem (NDT, rau Internal Defects)
Lub Hom Phiaj Xeem: Tshawb xyuas cov kab nrib pleb sab hauv, suav nrog, lossis qhov pores (tsis muaj qhov tsis xws luag ntau dua lossis sib npaug li 0.5 hli tso cai).
Test Methods & Khoom siv:
Kev Ntsuas Ultrasonic (UT):
Khoom siv: Ultrasonic Flaw Detector (piv txwv li, Olympus EPOCH 650), nrog kev sojntsuam zaus 2-5MHz, kuaj qhov tsis xws luag sab hauv (nrhiav txwv 0.1mm).
Radiographic Testing (RT, xaiv tau rau cov khoom tuab):
Khoom siv: X-ray tshuab hluav taws xob (xws li, YXLON Cheetah EVO), kuaj pom cov khoom siv sab hauv (rhiab heev dua lossis sib npaug li 2% ntawm thickness).
Sib Nqus Particle Testing (MPT, rau nto tawg):
Cov Khoom Siv: Sib Nqus Particle Tester (xws li Eriez 6200), kuaj pom cov kab nrib pleb (ntev Ntau dua lossis sib npaug li 0.2 hli) ntawm qhov chaw ferromagnetic (tsis tshua muaj rau Ti, tab sis siv yog xav tias muaj kab mob hlau).
Monica
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E-mail:Cr-Re@titanmsgp.com
