Gr12 Titanium Khoom Plasticity Ua

Cov txheej txheem ntawm kev ua Gr12 titanium cov ntaub ntawv ingots rau hauv cov khoom semi-tiav los ntawm cov yas deformation yog ib qho ntawm cov txheej txheem npaj cov khoom siv titanium. Kev lag luam feem ntau siv cov txheej txheem xws li forging, dov, extrusion, ncab, thiab lwm yam tau tuaj yeem tsim ntau yam tshwj xeeb ntawm cov phaj, bar, hlau, yeeb nkab thiab forgings. Nws cov txheej txheem ntws tau qhia hauv daim duab. Titanium khoom yas ua cov yam ntxwv yog: deformation kuj, tsis tshua muaj plasticity ntawm chav tsev kub, tawm los txwv thiab lub zog txwv ntawm qhov sib piv ntawm siab, deformation rebound, deformation txheej txheem yog ib qho yooj yim rau daim ntawv cog lus nrog pwm thiab hais txog.
Cua sov Lub deformation tsis kam ntawm titanium cov ntaub ntawv txo nrog nce kub, thiab lub plasticity nce nrog nce kub. Tshwj xeeb tshaj yog rau alloyed hlau alloy, cua sov deformation yog lub ntsiab deformation hom. Nyob rau hauv lub ingot qhib billet forging, cua sov yog ib tug tsim nyog txheej txheem. Titanium lub thermal conductivity tsis zoo, nyob rau hauv cov txheej txheem cua sov, yuav tsum tswj tus nqi ntawm qhov kub thiab txias, thiaj li yuav tiv thaiv tau qhov tsim ntawm thermal stress nyob rau hauv lub ingot. Rau qee cov khoom siv alloyed heev, qhov kev ntxhov siab thermal no tuaj yeem ua rau tawg. Nyob rau hauv qhov hluav taws kub tsis kam los yog nplaim taws cua sov lub sij hawm, feem ntau xam raws li tus ntoo khaub lig-section loj 1min / mm. Rau siab alloyed ingots yuav qeeb qeeb. Vim li no, segmented cua sov feem ntau siv. Yog tias siv cua sov induction, lub sijhawm yuav tsum tau txo qis. Cov khoom siv titanium yog tshuaj lom neeg thiab yooj yim nqus oxygen, nitrogen thiab hydrogen thaum rhuab. Thaum rhuab nyob rau hauv cov huab cua, qhov saum npoo ntawm lub billet yuav tsim ib tug oxide daim tawv nqaij thiab ib tug huab cua-absorbing txheej. Cov huab cua tuab tuab heev yuav ua rau tawg thaum deformed thiab deteriorate cov khoom zoo. Yog tias qhov nqus dej ntawm cov khoom siv titanium tshaj li tus qauv tus nqi, hydrogen embrittlement yuav tshwm sim hauv kev siv yav tom ntej. Txhawm rau txo qis oxidization thaum cua sov, kev tiv thaiv txheej yog ib txoj hauv kev zoo. Txhawm rau tiv thaiv kev nqus ntawm hydrogen, nws yog qhov zoo tshaj plaws los siv lub tshuab cua nruab nrab thaum cua sov, xws li lub qhov cub hluav taws xob. Thaum cua sov nrog cov nplaim taws, tswj lub qhov cub kom me ntsis oxidizing cua. Thaum cov khoom siv titanium yog rhuab, yog tias nws nyob rau hauv kev sib cuag thiab kev sib txhuam nrog hlau oxide thiab steel ncej, nws yuav ua rau lub zos melting los yog kub kub.

Titanium khoom plasticity ua
Forging yog titanium ingot ua rau hauv ib qho nruab nrab billet yuav tsum tau ua tiav, feem ntau hu ua qhib billet forging. Nyob rau tib lub sijhawm, forging kuj yog siv los ua cov txheej txheem ywj pheej rau kev tsim cov khoom tuav, forgings thiab poob-forged qhov chaw thiab lwm yam khoom. Forging khoom feem ntau yog siv rau forging rauj los yog hydraulic presses, kuj yuav siv tau ceev forging tshuab thiab precision forging tshuab. Qhov kub ntawm qhov qhib billet forging feem ntau yog xaiv nyob rau hauv cheeb tsam -phase, thiab tom qab forging yuav tsum tau xaiv nyob rau hauv sab sauv ntawm ib tug - -theem cheeb tsam. Qhov hluav taws kub deformation yog li ntawm 30% mus rau 70%. Nyob rau hauv kev saib ntawm rhiab heev ntawm titanium alloy zog rau lub koom haum, txoj kev loj hlob ntawm cov txheej txheem forging yuav tsum muaj peev xwm ua tau raws li cov creation ntawm optimum recrystallization tej yam kev mob kom tau qhov zoo tshaj plaws tag nrho cov kev ua tau zoo ntawm lub koom haum. Cov khoom siv titanium hauv cov cua sov thiab deformation, deformation tshav kub muaj kev cuam tshuam zoo. Lub zos khaus deformation cheeb tsam generated los ntawm lub tshav kub r nyob rau hauv tus ntawm nws tus kheej thermal conductivity tsawg, yuav ua rau lub zos overheating, thiaj li hais tias lub koom haum deterioration. Txawm li cas los xij, yog tias tus nqi deformation tuaj yeem tswj tau thiab ua kom cov deformation tsis sib xws, cov cua sov deformation rov zoo dua rau kev ua haujlwm. Lub deformation kuj nyob rau hauv forging nce sai nrog tus nqi deformation. Forging ntawm tib qhov kub, lub zog yuav tsum tau siv lub forging rauj yog siab dua li ntawm hydraulic xovxwm. Lub deformation tus nqi kuj muaj feem xyuam rau lub plasticity ntawm cov khoom. Nyob rau hauv xyoo tas los no, ntxiv rau kev siv cov pa forging, B forging thiab ze-net forming technology tau tsim.
Extrusion Txoj kev extrusion tsim cov hlab, tuav thiab profiles. Cov khoom siv titanium yog ib qho yooj yim los lo rau pwm thaum extruding. Yog hais tias lub lubrication tsis zoo, tsis tsuas yog ua rau cov pwm puas, thiab yuav ua rau lub extruded nto los tsim longitudinal "groove" defects. Feem ntau siv lubrication txoj kev yog coated nrog iav lubricant los yog lub tes tsho hlau, los yog coated nrog graphite-based lubricants.
Phaj, sawb, ntawv ci dov Muaj peb txoj hauv kev kub dov, sov dov thiab txias dov. Ntxiv rau p-hom titanium alloy, kub dov yuav tsum feem ntau nyob rau hauv n los yog aB theem gi sab laug kab. Kub dov kub yog 50-100 degree qis dua qhov kub forging. Thick 2 mus rau 5ram phaj tuaj yeem siv rau cov txheej txheem dov sov, thinner loj ntawm lub phaj tuaj yeem txias dov. Txias dov ntawm ob qho annealing deformation ntawm 15% mus rau 60%. Txhawm rau kom ntseeg tau tias qhov zoo ntawm cov phaj thiab cov txheej txheem dov kom zoo, yuav tsum tau siv nyob rau hauv nruab nrab ntawm cov annealing thiab nto kho thiab lwm yam txheej txheem ntsuas. Kev siv strip dov, nruam pickling thiab nruam annealing thiab lwm yam, tuaj yeem tsim ntau tons ntawm titanium strip coil hnyav ib yob.
Tube dov Thick-walled tubes tuaj yeem tsim los ntawm extrusion los yog slant dov txoj kev, me me txoj kab uas hla nyias-walled seamless hlab yuav tsum tau txias dov los yog stretched. Titanium alloy plasticity nyob rau hauv lub xeev txias yog txwv, rhiab rau notch, yooj yim mus ua hauj lwm hardening, yooj yim rau lo pwm. Txhawm rau txhim kho cov dov ntawm titanium alloy tubing, sov dov txheej txheem tuaj yeem siv. Rolled tube zoo nyob ntawm qhov sib piv ntawm phab ntsa thickness txo tus nqi thiab txoj kab uas hla txo tus nqi, thaum lub qub yog ntau dua qhov tom kawg, koj tuaj yeem tau txais cov raj zoo. Tsis tas li ntawd, cov dov nyias strip coil raws li ib tug billet, nyob rau hauv lub welded yeeb nkab tshuab series los ntawm kev txiav, coiling, welding rau nyias-walled welded yeeb nkab, kuj tau lug siv nyob rau hauv hluav taws xob fais fab, tshuaj kev lag luam.