Titanium alloys yog qhov tseem ceeb hauv aerospace, kev kho mob, tshuaj, thiab lwm yam kev xav tau vim lawv lub zog tshwj xeeb - rau - qhov hnyav piv, corrosion resistance, thiab biocompatibility. Ntawm cov no, covASTM B381 Gr5 titanium baryog ib qho ntawm feem ntau nrhiav- tom qab thiab dav siv cov ntaub ntawv siv rau kev lag luam. Kab lus no muab kev tshawb fawb tob hauv - nws cov qauv, cov khoom, kev sib piv, thiab cov txheej txheem xaiv, txhawb nqa los ntawm cov ntaub ntawv tseeb thiab kev siv kev lag luam.
Qib 5 titanium ASTM tus qauv yog dab tsi?
Txhawm rau nkag siab txog ASTM B381 Gr5 titanium bar, nws yog qhov tseem ceeb ua ntej kom paub meej nws cov txheej txheem tswj hwm. ASTM B381 yog tus qauv tshwj xeeb tshwj xeeb rau titanium thiab titanium alloy forgings. Nws suav nrog cov tshuaj lom neeg muaj pes tsawg leeg, cov khoom siv kho tshuab, qhov ntev ntev, cov txheej txheem kuaj, thiab cov kev xav tau kev ruaj ntseg zoo. Lub npe "Gr5" yog hais txog cov khoom siv qib.
Qib 5 titanium, hauv cov txheej txheem ASTM, tshwj xeeb txhais tau tias nws muaj pes tsawg leeg li Titanium-6Aluminium-4Vanadium (Ti-6Al-4V). Qhov no yog qhov classic tshaj plaws thiab dav siv alpha-beta hom ob-theem titanium alloy. Raws li ASTM B381, Gr5 titanium tuav yuav tsum ua tau raws li cov kev cai nruj me ntsis. Rau cov khoom siv annealed, tus qauv qhia qhov tsawg kawg nkaus tensile zog ntawm 895 MPa (130 ksi) thiab qhov tsawg kawg nkaus yield zog (0.2% offset) ntawm 828 MPa (120 ksi), nrog ib tug raug elongation ntawm 10% nyob rau hauv 4D. Cov qauv no ua kom muaj kev sib luag, kev ntseeg siab, thiab kev taug qab ntawm cov khoom siv, uas yog qhov tseem ceeb rau cov khoom tseem ceeb ntawm kev nyab xeeb.
Cov ntaub ntawv kev lag luam qhia tau hais tias kwv yees li 50% ntawm tag nrho cov titanium alloy ntau lawm thoob ntiaj teb yog Ti-6Al-4V, nrog rau kev siv aerospace suav txog li 80% ntawm nws cov kev siv. Qhov kev tswj hwm no qhia txog nws qhov kev ua tau zoo hauv kev xav tau ib puag ncig.
Puas yog qib 5 titanium zoo ib yam li 6Al 4V?
Qhov no yog ib lo lus nug ntau heev, thiab cov lus teb yog:Yog lawm, nyob rau hauv feem ntau ntawm cov ntsiab lus, Qib 5 titanium hais txog Ti-6Al-4V alloy.
"Qib 5" yog qib kev xaiv nyob rau hauv ASTM (American Society for Testing and Materials) standard system, thaum "Ti-6Al-4V" los yog "6Al-4V" yog lub npe nrov raws li nws cov tshuaj muaj pes tsawg leeg (kwv yees li 90% titanium, 6% aluminium, 4% vanadium). Cov tshuaj muaj pes tsawg leeg yuav tsum tau ua raws li ASTM B381 yog nruj me ntsis txwv:
| Element | Kev sib xyaw (%) | Ua siab ntev |
|---|---|---|
| Aluminium | 5.5 - 6.75 | ±0.40 |
| Vanadium | 3.5 - 4.5 | ±0.15 |
| Hlau (max) | 0.40 | - |
| Oxygen (max) | 0.20 | - |
| Cov pa roj carbon (max) | 0.08 | - |
| Nitrogen (max) | 0.05 | - |
| Hydrogen (max) | 0.015 | - |
| Residuals (txhua) | 0.10 | - |
| Residuals (tag nrho) | 0.40 | - |
Kev Kawm Cov Neeg Siv Khoom: Aerospace Component Chaw Tsim Tshuaj
Ib tus neeg xa khoom siv dav hlau tau hloov pauv los ntawm kev qhia "Ti-6Al-4V" rau "ASTM B381 Gr5" hauv lawv cov ntaub ntawv yuav khoom rau cov khoom siv tsaws iav. Qhov kev tsim qauv no txo cov sij hawm tsim nyog los ntawm 35% thiab tshem tawm cov kev siv tsis raug ntawm cov ntawv pov thawj sib txawv. Cov ntaub ntawv meej meej rau ASTM tus qauv tau ua kom txhua yam khoom tau txais tau raws li cov cuab yeej cuab tam thiab kev sim, tsis hais tus neeg muag khoom lub npe sab hauv.
ASTM tus qauv rau titanium yeeb nkab yog dab tsi?
Thaum tsab xov xwm no tsom mus rau titanium tuav, kev nkag siab cov qauv rau cov khoom muaj feem xyuam yog qhov tseem ceeb sib npaug. titanium yeeb nkab thiab tubing yog tswj hwm los ntawm ib qho kev sib cais, tshwj xeeb tus qauv:ASTM B 861. Cov txheej txheem no npog seamless titanium thiab titanium alloy yeeb nkab rau ntau yam kev siv.
Zoo ib yam li ASTM B381 (forgings), ASTM B861 kuj qhia cov qhab nia raws li cov alloy muaj pes tsawg leeg. Kev sib piv cov cuab yeej cuab tam rau Qib 5 thoob plaws cov khoom sib txawv qhia pom qhov tseem ceeb:
| Khoom | ASTM B381 Gr5 (Bar, Annealed) | ASTM B861 Gr5 (Pib, Annealed) | ASTM B348 Gr5 (Bar thiab Billet) |
|---|---|---|---|
| Tensile zog, min | 895 MPa (130 ksi) | 895 MPa (130 ksi) | 895 MPa (130 ksi) |
| Yield zog (0.2% offset), min | 828 MPa (120 ksi) | 828 MPa (120 ksi) | 828 MPa (120 ksi) |
| Elongation, min | 10% | 10% | 10% |
| Txo ntawm Cheeb Tsam, min | 20% | 25% | 25% |
| Daim ntawv thov tseem ceeb | Forged Cheebtsam | Cov tshuab siab | Billet rau kev ua haujlwm ntxiv |
Kev pom cov ntaub ntawv: Qhov tsawg kawg nkaus lub zog muaj nuj nqis nyob rau hauv cov ntaub ntawv cov khoom (B381, B861, B348) rau Qib 5 titanium pab cov engineers tsim cov tshuab siv ntau hom khoom nrog kev ua tau zoo. Txawm li cas los xij, qhov sib txawv ntawm 5% ntawm qhov txo qis ntawm thaj tsam ntawm B381 thiab B861 qhia txog qhov sib txawv deformation yam ntxwv xav tau hauv forged bars piv rau seamless yeeb nkab tsim cov txheej txheem.
Qhov twg muaj zog dua, titanium qib 2 lossis qib 5?
Lub zog yog qhov tseem ceeb hauv kev xaiv cov khoom siv. Qib 5 (Ti-6Al-4V)Nws muaj zog dua qib 2 (kev lag luam ntshiab titanium).Cov lus sib piv hauv qab no qhia txog qhov sib txawv ntawm qhov ua tau zoo:
| Khoom | Qib 2 (CP Titanium) | Qib 5 (Ti-6Al-4V) | Kev txhim kho |
|---|---|---|---|
| Tensile zog | 345 MPa (50 ksi) min | 895 MPa (130 ksi) min | +159% |
| Yield zog (0.2% offset) | 275 MPa (40 ksi) min | 828 MPa (120 ksi) min | +201% |
| Elongation | 20% min | 10% min | -50% |
| Qhov ntom | 4.51 g / cm³ | 4.43 g / cm³ | -1.8% |
| Kev qaug zog | ~ 240 MPa (ntawm 10⁷ cycles) | ~ 500 MPa (ntawm 10⁷ cycles) | +108% |
| Qhov Kev Pab Cuam Siab Tshaj Plaws | ~ 300℃(570℃F) | ~ 400℃(750℃F) | +100 degree |
| Tus nqi txheeb ze | 1.0 (Lub hauv paus) | 2.5 - 3.5 | +150-250% |
Kev Kawm Cov Neeg Siv Khoom: Cov Khoom Siv Kho Mob Chaw Tsim Khoom
Ib lub chaw tsim khoom cog kev kho mob tau soj ntsuam cov ncauj lus kom ntxaws thaum xaiv ntawm Qib 2 thiab Qib 5 titanium rau ib qho khoom siv tshiab spinal fusion. Thaum Qib 2 muab cov qauv tsim tau zoo dua thiab tus nqi qis dua, qhov kev txheeb xyuas qhov tseeb tau pom tias Qib 5 lub zog zoo tshaj plaws tau tso cai rau 30% txo qis hauv cov khoom hla -section thaum tuav tib yam kev nyab xeeb. Qhov kev txo qis no txhais rau:
- 25% tsawg dua cov khoom siv rau ib lub cuab yeej
- 15% txo lub sijhawm machining
- Txhim kho cov txiaj ntsig ntawm tus neeg mob vim qhov kev cog lus me me
Kev soj ntsuam tau lees paub tias txawm tias Qib 5 tus nqi khoom siv ntau dua, tag nrho cov nqi tsim khoom ntawm ib lub cuab yeej tsuas yog 12% siab dua, thaum kev ntsuas kev ua tau zoo dua qub. Lub tuam txhab standardized rauASTM B381 Gr5 titanium tuavrau tag nrho cov load{0}}cov kabmob orthopedic implants.
Cov ntaub ntawv lag luam: Raws li kev lag luam qhia, tus nqi hwm rau Qib 5 titanium tshaj Qib 2 feem ntau yog li ntawm 150% mus rau 250%, nyob ntawm kev ua lag luam, daim ntawv, thiab kom muaj nuj nqis. Txawm li cas los xij, hauv kev ua haujlwm siab - cov ntawv thov kev ua tau zoo uas txo qhov hnyav lossis qhov hnyav me me yog qhov tseem ceeb, tag nrho cov nqi txuag nyiaj feem ntau ua pov thawj qhov nqi no.
Kev Txiav Txim thiab Kev Taw Qhia
CovASTM B381 Gr5 titanium barsawv cev rau tus qauv kub rau siab -kev ua tau zoo titanium alloy forgings. Nkag siab txog nws cov qauv hauv qab ASTM, nws qhov sib npaug rau 6Al-4V, nws qhov txawv ntawm lwm cov qauv khoom, thiab nws lub zog kom zoo dua cov titanium ntshiab yog qhov tseem ceeb rau cov kws tsim khoom, cov kws tshaj lij, thiab cov neeg txiav txim siab.
ASTM B381 Gr5 Daim Ntawv Pov Thawj:
1. Thaum Yuav Qhia: Applications requiring tensile strength >800 MPa, qaug zog tsis kam, ua haujlwm kub txog li 400 degree, lossis qhov hnyav txo qhov tseem ceeb.
2. Tus nqi -Txoj Kev Pabcuam: Consider Grade 5 when the strength advantage can reduce material volume by >20% lossis ua kom muaj kev ua haujlwm tsis tuaj yeem nrog Qib 2.
3. Yuav tsum muaj kev pov thawj: Ib txwm xav tau daim ntawv pov thawj zeb rau ASTM B381 nrog tag nrho traceability, suav nrog cov xov tooj cua sov, chemistry, thiab cov txiaj ntsig kev ntsuas tshuab.
4. Lwm yam kev txiav txim siab: Rau cov kev siv tsis yog - cov qauv siv uas tsuas yog xav tau kev tiv thaiv corrosion, Qib 2 yuav muab tus nqi zoo dua.
Hauv kev xav tau kev lag luam ib puag ncig, xaiv cov khoom siv Gr5 uas ua raws li ASTM B381 yog qhov peev txheej hauv kev ua kom muaj kev nyab xeeb, kev ntseeg siab, thiab ua tiav qhov project. Rau koj tus qauv tsim tom ntej uas xav tau qhov kawg ntawm lub zog thiab ua haujlwm ntev, nco ntsoov xav txog lub sijhawm no -cov ntaub ntawv tshuaj ntsuam xyuas nrog nws qhov zoo-cov ntaub ntawv ua tau zoo.
Email:baohui@bhsteelpipe.com
