Ti-17 titanium alloy bar forging txheej txheem tshawb fawb

Titanium alloys yog dav siv nyob rau hauv aerospace daim ntawv thov vim lawv lub zog tshwj xeeb, corrosion kuj thiab zoo thermal zog, thiab lwm yam. Ti-17 alloy yog ib tug ze-beta alloy nrog zoo heev zog. Nws lub npe hu ua Ti-5Al-2Sn-2Zr-4Mo-4Cr. Cov hlau tuaj yeem raug forged hauv cheeb tsam + theem lossis hauv cheeb tsam theem. Nws tsis tsuas yog muaj zog, hardenability thiab tawg toughness, tab sis kuj muaj zoo thermal stability, qaug zog zog, kub ua hauj lwm zog. Txij li thaum xyoo 1970, nws tau tuaj yeem nkag mus rau hauv kev lag luam aerospace nrog kev ua tau zoo heev thiab siv los ua compressor rau siab zog cav. Nrog rau kev txhim kho txuas ntxiv ntawm Tuam Tshoj txoj kev lag luam cav, nrog Ti-17 titanium forgings tsim los ntawm lub siab-siab compressor thawj thiab thib ob tag nrho cov disc forgings Ti-17 titanium bar specifications, lub koom haum thiab kev ua tau zoo muaj kev xav tau ntau dua. Vim li no, cov kws tshawb fawb tau kawm txog cov txheej txheem forging ntawm Ti-17 titanium alloy Φ350mm loj bar.

Lub sijhawm hloov pauv ntawm qhov taw tes (+ /) ntawm qhov kev sim cov khoom siv alloy tau txiav txim siab yog 880 ~ 900 degree los ntawm txoj kev metallographic.

Lub Φ350mm specification bar tau tsim raws li ob txoj kev forging schemes A thiab B. Scheme A: Ingot ib-theem deformation rau upsetting, deformation ntawm 60-75%, ces nkag mus rau ob-theem cheeb tsam forging, ob-theem cheeb tsam rau txheej txheem kev kos duab, deformation ntawm 60-75% ; Scheme B: Ingot forging los ntawm cov txheej txheem ib txwm kos duab, ib theem deformation ntawm 40-65%, ob-theem deformation ntawm 40-60%. Txoj kev tshawb no qhia tias:

(1) Cov khoom siv kho tshuab ntawm Ti-17 Φ350mm bar forged los ntawm scheme A yog tag nrho raws li tus qauv yuav tsum tau ua. Qhov kub-kub tensile zog thiab creep zog ntawm forged bar tsim los ntawm scheme B tsis tau raws li qhov yuav tsum tau index.

(2) Lub forged bar tsim los ntawm cov tswv yim A, tsawg lub sij hawm rau uniform fuzzy siv lead ua, siab lub sij hawm rau spherical + hloov lub koom haum, transverse longitudinal microstructure tsis tseem ceeb. Scheme B zus tau tej cov forged bar uas tsis muaj sij hawm rau homogeneous semi-fuzzy crystals, high-order lub koom haum rau spherical + lamellar + loj + hloov lub koom haum, lub longitudinal lub koom haum muaj ib tug nyiam sib txawv, transverse ntsug microstructure rau qhov sib txawv.

(3) Qhov kuaj pom clutter theem ntawm forged rods tsim los ntawm scheme A tuaj yeem mus txog Φ3.2 -9 mus rau -12 dB, thiab qhov kuaj pom clutter theem ntawm forged rods tsim los ntawm scheme B yog Φ3.{{ 5}} rau -3 dB.Qhov kev sib tsoo tag nrho yog siab dua, -6 rau -9 dB.

(4) Los ntawm cov txheej txheem ntxhov siab, ib theem deformation ntau dua 60%, ob-theem cheeb tsam nrog ntev deformation, thiab deformation ntawm ntau tshaj 60% ntawm cov txheej txheem forging, koj tuaj yeem tsim cov khoom nrog kev ua tau zoo, koom haum thiab qib tshuaj xyuas nyob rau hauv txoj kab nrog tus qauv yuav tsum tau. Tus neeg siv yuav tsum tau Ti-17 titanium alloy Φ350mm specification bar, uas yog haum rau industrialized loj ntau lawm.