ASTM B861 Qib 12 Titanium Tube (Ti-0.3Mo-0.8Ni): Cov Lus Qhia, Cov Khoom Siv thiab Kev Siv

Qib 12 Titanium yog dab tsi?

Qib 12 titanium, hu ua Ti-0.3Mo-0.8Ni thiab sau npe ua UNS R53400, yog ib qho ze-alpha alloy tsim los kaw qhov sib txawv ntawm qhov sib txawv uas txwv tsis pub siv titanium hauv cov tshuaj kub chloride brines thiab tsis muaj zog acids. Me me, tswj kev ntxiv ntawm molybdenum (0.2-0.4%) thiab npib tsib xee (0.6-0.9%) stabilize lub passive zaj duab xis nyob rau hauv txo tej yam kev mob, muab Qib 12 crevice corrosion kuj uas yog kom meej meej superior rau Qib 2 thiab 3 thiab piv rau palladium-bearing qib nyob rau hauv ntau yam kev pab cuam. Lub alloy khaws cov txheej txheem plasticity thiab weldability ntawm CP titanium, thiab nws yog ib txwm muab thiab siv nyob rau hauv lub annealed mob.

ASTM B861 npog seamless thiab welded titanium raj rau kev xeb dav dav - tiv thaiv thiab nce siab - kev pabcuam kub. Qib 12 yog ib qho kev xaiv nyob rau hauv qhov kev qhia tshwj xeeb no vim tias nws muaj kev sib xyaw ua ke ntawm lub zog nruab nrab, kev vam khom weldability thiab kev ua haujlwm corrosion uas cov qib ntshiab tsis tuaj yeem sib xws hauv cov tshuaj chlorides, uas yog vim li cas nws tshwm sim hauv cov nroj tsuag tshuaj, desalination, marine systems thiab lub zog -tiam tshav kub exchangers.

Chemical Composition (ib ASTM B861, xa mus rau ASTM B265 txwv)

Mechanical Requirements (Annealed, per ASTM B861)

Tensile zog, min: 483 MPa (70 ksi)

Yield zog (0.2% offset), min: 345 MPa (50 ksi)

Elongation hauv 50 hli, min: 18%

Qhov ob qhov tseem ceeb yog qhov tsawg kawg nkaus rau qhov mob annealed. Vim Qib 12 muaj zog dua CP Qib 1-4, cov neeg tsim qauv siv tau cov phab ntsa nyias nyias rau tib qhov kev ntsuas siab, uas ib feem cuam tshuam cov nqi hlau ntau dua ib kilogram.

Manufacturing Routes thiab Hom Dimensional Range

Seamless raj yog tsim los ntawm extrusion los yog rotary tho tom qab txias dov los yog kos duab; welded hlab yog tsim los ntawm sawb los yog phaj thiab tiav nrog txias ua hauj lwm thiab annealing raws li xav tau. Cov khoom siv dav dav rau qib no: sab nraud txoj kab uas hla 21.3-609.6 hli, phab ntsa tuab 1.0-10.0 hli, ib qhov ntev txog 6000 hli, phab ntsa thickness kam rau ua +/-12.5% ​​thiab ntev kam rau ua +5 hli. Dimensional thiab kam rau ua cov ntsiab lus ib txwm ua raws li ASTM B861 lub rooj rau qhov xaj loj.

Daim ntawv thov ntawm Qib 12 Titanium Tube

Kev siv tshuaj: piping, heat exchangers thiab spargers tuav kub chlorides, seawater thiab tsis muaj zog acids.

Thaum tshav kub kub exchangers thiab condensers: tsis kam mus rau chloride pitting thiab crevice nres ntawm siab kub.

Aerospace Cheebtsam: tsim thiab welded tubular qhov chaw uas yuav tsum tau ua ke ntawm lub zog, corrosion kuj thiab lub teeb yuag.

Marine thiab offshore: seawater txias loops, riser instrumentation tubing thiab ballast systems.

Cov cuab yeej kho mob: implant- cov cuab yeej nyob ib sab uas biocompatibility thiab corrosion kuj nyob rau hauv lub cev muaj zog.

Kev Xaiv Cov Lus Cim thiab Cov Lus Ua Tsis Zoo

Tsis txhob hloov Qib 2 rau Qib 12 hauv cov tshuaj chloride kub lossis crevice- kev pabcuam yooj yim; lub crevice corrosion kub txwv ntawm CP titanium yog qhov qis dua, thiab kev ua haujlwm tsis zoo feem ntau tshwm sim raws li kev tawm tsam hauv cheeb tsam hauv qab gaskets thiab raj -rau-tubesheet pob qij txha. Yog tias ib puag ncig txo qis, piv rau Qib 12 nrog Qib 7 (Ti-0.2Pd); Cov qib palladium muaj kev zam txim ntau dua hauv cov kua qaub txo qis tab sis raug nqi ntau dua. Nco ntsoov tias ASTM B861 yog cov raj dav dav dav dav, thaum ASTM B338 npog lub raj rau condensers thiab cov khoom siv hluav taws xob sib txawv nrog cov kev xav tau nruj dua, thiab ASME SB861 yog qhov sib npaug ntawm lub nkoj. Qhia qhov yuav tsum tau ua, txoj kev xeem thiab daim ntawv pov thawj zeb (EN 10204 3.1) nyob rau theem nug kom tsis txhob rov ua haujlwm dua.

FAQ

Qib 12 titanium raj puas haum rau dej hiav txwv?

Yog lawm. Qib 12 tiv taus pitting thiab crevice corrosion nyob rau hauv dej hiav txwv ntawm qhov kub siab tshaj qhov zoo tshaj CP qib, thiab nws ua siab ntev me ntsis txo cov xwm txheej pom nyob rau hauv stagnant los yog fouled seawater systems.

Dab tsi yog qhov txawv ntawm Qib 12 thiab Qib 2 titanium raj?

Qib 2 yog unalloyed titanium nrog zoo heev corrosion kuj tab sis ib tug qis crevice corrosion pib nyob rau hauv kub chlorides. Qib 12 ntxiv 0.3% Mo thiab 0.8% Ni, nce lub zog mus txog 483 MPa tensile yam tsawg kawg nkaus thiab txuas ntxiv corrosion kuj mus rau txo thiab crevice - tawm xov xwm.

Qib 12 titanium raj puas tuaj yeem welded?

Yog lawm. Qib 12 muaj qhov zoo weldability thiab feem ntau yog siv rau hauv qhov mob annealed. Vuam yuav tsum ua raws li cov txheej txheem tsim nyog nrog inert gas shielding; muab tub lim hlau ntawm qib sib piv yog pom zoo kom khaws cia kev ua haujlwm corrosion.

Dab tsi cov qauv npog Qib 12 titanium raj?

ASTM B861 (seamless thiab welded raj, kev pabcuam dav dav), ASTM B338 (condenser thiab heat exchanger tube), ASME SB861 (kev siv siab) thiab ASTM B265 rau daim ntawv / phaj. Chemistry tau teev nyob rau hauv ASTM B265 cov lus hais los ntawm cov qauv raj.

Yog vim li cas lub npe hais txog aerospace Cheebtsam?

Qib 12 lub zog-rau- qhov hnyav piv thiab formability ua rau nws muaj txiaj ntsig zoo hauv aerospace tubular Cheebtsam xws li cov kab hydraulic thiab ducting, txawm hais tias nws siv dav tshaj plaws tseem yog cov khoom siv tshuaj thiab cov khoom siv marine.

Cov xwm txheej saum npoo dab tsi muaj?

Annealed thiab pickled yog tus txheej txheem xa khoom; polished, ci ntsa iab annealed thiab sandblasted nto tuaj yeem raug teev rau cov cua sov-txoj kev sib pauv lossis cov khoom kom zoo nkauj. Nto tiav yuav tsum tau teev nyob rau hauv daim ntawv xaj yuav khoom.