ASTM titanium qib system yog qhov loj tshaj plaws nyob rau hauv lub ntiaj teb no titanium kev ua lag luam thiab nws yog lub hauv paus ntawm thoob ntiaj teb kev yuav khoom, ntau lawm thiab engineering daim ntawv thov, uas kuj yog lub feem ntau lees paub nyob rau hauv aerospace, tshuaj, tshuaj, mechanical thiab lwm yam loj industries. Ntawm lawv, ASTM Qib 2 (kev lag luam ntshiab titanium) thiab Qib 5 (Ti-6Al-4V) thiab Qib 23 (Ti-6Al-4V ELI) yog cov muag khoom zoo tshaj plaws thiab cov qib siv dav tshaj plaws. Qhov sib txawv ntawm cov muaj pes tsawg leeg thiab impurities cuam tshuam nws cov khoom siv kho tshuab, corrosion kuj thiab kev ua haujlwm. Yog li, qhov kev xaiv raug yog qhov tseem ceeb rau kev ruaj ntseg engineering, nqi thiab lub neej ntawm lub nkoj.
ASTM Qib 2 Ntshiab Titanium yog ib yam tsis yog -ferrous ntshiab hlau uas yog qib siv dav tshaj plaws ntawm kev lag luam Titanium. Cov impurities loj yog hlau (Less tshaj los yog sib npaug rau 0.30%), oxygen (Less tshaj los yog sib npaug rau 0.20%), nitrogen (Less tshaj los yog sib npaug rau 0.03%), carbon (Less tshaj los yog sib npaug rau 0.08%). Qib qis ntawm impurity muab nws nrog zoo corrosion kuj thiab formability. Raws li nrog rau lwm qib ntawm titanium, nws muaj zog me ntsis, tab sis nws yog ruaj khov thiab weldable - koj tuaj yeem ua cov welds hauv cov chav kawm siab yam tsis muaj kev kho ua ntej{10}}, thiab lub zog ntawm cov vuam sib koom ua ke tuaj yeem muaj ntau dua 90% ntawm cov hlau puag. Cov khoom siv no yooj yim los ua rau hauv daim hlau, raj, pas nrig thiab txhua qhov sib txawv ntawm cov duab rau ntau daim ntawv thov.
Qib 2 yog qib nrov tshaj plaws ntawm titanium rau kev lag luam chemical, marine thiab roj thiab roj vim nws cov corrosion kuj. Nws yog dav siv nyob rau hauv tshav kub exchangers, reactors, pipelines, li qub thiab muaj peev xwm tiv thaiv corrosion los ntawm xws li cov xov xwm uas tsis muaj / nruab nrab concentration ntawm hydrochloric thiab sulfuric acids, thiab tsis tshua muaj kev txom nyem los ntawm pitting los yog crevice corrosion. Hauv kev tsim kho dej hiav txwv, nws paub tab hauv seawater desalination thiab dej hiav txwv pipelines nrog lub neej - ncua tshaj 20 xyoo, zoo dua stainless hlau. Nyob rau tib lub sijhawm, cov khoom ua tau raws li cov qauv kev noj qab haus huv thiab kev noj qab haus huv thiab tuaj yeem siv rau hauv cov hlab ntsha siab, thiab cov tshuab ua khoom noj. Nws lub zog tensile yog 345-450MPa, yield zog yog hais txog 275MPa, thiab elongation yog ntau dua los yog sib npaug li 20%, thiab nws tuaj yeem txav tau ruaj khov hauv siab thiab chav tsev kub. Nws yog qib qis tshaj plaws ntawm titanium.
Qib 5 yog qhov nrov tshaj plaws & paub dav titanium alloy ([Ti-6Al-4V] "tus huab tais ntawm titanium alloys"). Nws cov ntsiab lus yog Al (aluminium): 5.5% -6.75%, V (vanadium): 3.5% -4.5%, Ti (titanium): tus so. Nws yog + hom alloy, uas muaj ob lub zog thiab plasticity. Nws muaj ob qho tib si cov khoom siv zoo dua li cov ntshiab titanium thiab tsis yooj yim rau txheej txheem dua li lwm cov khoom siv muaj zog titanium alloys, yog li ntawd, nws muaj feem xyuam rau cov khoom uas nqa cov qauv loads.
Lub zog tensile ntawm cov khoom yog ntau dua los yog sib npaug rau 930 MPa, lub zog tawm los yog ntau dua lossis sib npaug ntawm 860 MPa, qhov elongation yog ntau dua lossis sib npaug li 10%, thiab lub zog qaug zog yog li 420 MPa (kwv yees li ob zaug ntawm Qib 2). Nws tuaj yeem tiv taus siab thiab hloov pauv loads thaum tswj kev ua haujlwm zoo corrosion. Hauv kev lag luam aviation, nws cov kev siv nyiaj ntau dua 70% ntawm cov khoom siv dav hlau titanium, siv rau kev tsaws iav, tis connectors, thiab cav Cheebtsam ntawm Boeing 787 thiab Tuam Tshoj C919. Hauv kev lag luam chemical engineering, nws tuaj yeem siv rau siab -siab reactors thiab hnyav{11}} cov kav dej; Hauv kev tsim khoom siv tshuab, nws tsim nyog rau precision pwm. Txawm hais tias tus nqi siab dua li titanium ntshiab, nws cov nqi sib tw -kev ua tau zoo yog qhov zoo heev.
ASTM Qib 23 (Ti-6Al-4V ELI) yog qhov tsis tshua muaj qhov sib txawv ntawm Qib 5 ("ELI" txhais tau tias tsis tshua muaj qhov sib txawv). Txawm li cas los xij, nws muaj kev tswj hwm nruj dua ntawm impurities: oxygen Tsawg dua lossis sib npaug li 0.13%, hlau Tsawg dua lossis sib npaug rau 0.25%, hydrogen Tsawg dua lossis sib npaug li 0.012%. Nws kuj tseem muaj kev txhim kho tseem ceeb hauv kev ua kom tawv nqaij, cuam tshuam lub zog thiab biocompatibility thaum tuav lub zog thiab corrosion kuj ntawm Qib 5.
Qib 23 muaj lub zog tensile yam tsawg kawg nkaus ntawm 860 MPa, qhov tsawg kawg nkaus yield zog ntawm 795 MPa, yam tsawg kawg nkaus elongation ntawm 14%, yam tsawg kawg nkaus toughness ntawm 60 J (kwv yees li 50% siab dua qib 5) thiab zoo dua tiv thaiv brittle puas. Cov ntsiab lus impurity tsawg heev ua rau nws tsis yog - tshuaj lom, hypoallergenic thiab muaj kev sib raug zoo nrog cov ntaub so ntswg lom, yog li nws tuaj yeem siv rau hauv kev kho mob cog qoob loo xws li pob qij txha, kho hniav, thiab stents. Tib lub sijhawm, nws kuj tseem siv rau hauv siab - cov cuab yeej ua tau zoo xws li cov khoom siv hluav taws xob semiconductor thiab aviation sensors. Tab sis nws cov txheej txheem ntau lawm yuav tsum nruj cov qauv thiab tus nqi siab dua qib 5.
Thaum xaiv cov khoom siv, Qib 2 raug pom zoo rau cov pa corrosive thiab qis load; Qib 5 yog pom zoo rau aerospace thiab siab load tshuaj cov qauv; Kev cog qoob loo kho mob thiab siab - cov cuab yeej ua tau zoo yuav tsum siv Qib 23. Kev xaiv kom raug tuaj yeem ua kom zoo, tswj cov nqi, thiab zam kev poob, uas yog qhov txuas tseem ceeb hauv kev yuav khoom titanium. Nrog rau kev loj hlob ntawm kev lag luam xav tau, daim ntawv thov ntawm peb hom qib no yuav dhau los ua ntau dua, thiab kev txhim kho kev ua haujlwm thiab kev txhim kho cov txheej txheem tseem yuav yog qhov tseem ceeb ntawm kev txhim kho yav tom ntej.
Thov ib daim Quote
Email:bjcxtitanium@gmail.com
Whatsapp: +8613571718779
