Kev tsom xam ntawm cov ua rau txias - rolled cracking hauv Ta18 Titanium Alloy Leeg

Tai18 (ti - 3al {4} {}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} {}} Nws tsis tsuas yog ua rau muaj chav nyob zoo chav-kub thiab kev ua haujlwm corrosion thiab corrosion zoo heev casticity, formability, weldability, thiab corrosion tsis kam. Tai18 titanium alloy tubing yog dav siv nyob rau hauv dav hlau cav thiab cov roj pipods, cov pas nrig ntaus nqi roj, thiab cov pas dej sov.

Ib pob ntawm TA18 titanium alloy tubing tau tsim muaj ntau cov txheej txheem los ntawm tus ntoo khaub lig {} × 8 hli rau 55 hli × 6 hli. Macroscopic soj ntsuam qhia tias cov kab nrib pleb tau tshaj tawm hauv zos raws txoj kev taug kev ntev ntawm cov hlab, uas tsis pom ntawm qhov chaw. Cov kab nrib pleb hauv lub raj nplaim raj, sib sau los ntawm - Hom tawg, ua rau 60% scrapping ntawm batch. Txhawm rau txheeb xyuas qhov ua rau txias - Cov pa tawg nyob hauv Ta18 Alloy Cov kav dej, micracture morphology, thiab microhardness. Qhov ua rau ntawm cov kev tawg tau tseem tshawb nrhiav.

Peb qhov hnoos qeev tau coj los ntawm cov tawg thiab ib txwm muaj, thiab lawv cov tshuaj lom neeg raug txiav txim siab siv ICP Ntev thiab transverse metallogrens tau tshwm sim los ntawm cov tawg thiab ib txwm muaj) ntawm cov acid solid: nitric acid: dej {3:45. Lub microstructure tau pom siv ib lub leica hli- 6 tawm tsom tsom. Cov hnoos qeev tau raug coj los ntawm cov chaw tawg pleb, thiab cov ntu ntawm cov kab tawg tau siv JEOL JSM-5610LV scanning Electron tsom. Peb tus metallograph cov qauv tau raug coj los ntawm cov tawg thiab cov ntsiab lus nyuaj, thiab cov ntsiab lus nyuaj ntawm kev siv Shimadzu Tester ntawm 9.8 n / 30 s. Kev txheeb xyuas ob qho tib si tawg thiab ib txwm txias-rolled ta18 titanium alloy tubes qhia ntau dhau Fe Fe cov ntsiab lus thiab cov ntsiab lus ze thiab. Kev ntsuam xyuas microsuction tau qhia ib qho kev ua kom zoo nkauj hauv ntu ib txwm muaj. Nyob rau hauv seem tawg, theem tau dispersed nyob rau hauv lub sij hawm nyob rau hauv lub transverse microstructure tau pom nyob rau hauv lub suab nrov microstructude, uas qhia ib tug neeg nyiam mus rau Widmanstäten kev hloov chaw. Cov me me soj ntsuam ntawm ntu tawg pom intergranular brittle brittle baciture. Hardness ntsuas qhia qhov nruab nrab vickers hardness ntawm 15% siab dua hauv ntu tawg dua li nyob rau ntu ib txwm muaj.

Cov qhab nia xeem qhia tau hais tias ntxiv ntawm cov hlau hlau thaum tus txheej txheem sib txuas ntawm cov txheej txheem hluav taws xob thaum lub sijhawm sib xyaw ua ke ntawm cov txheej txheem sib txawv, ua rau muaj kev sib cais hauv cov smelted ingot. Qhov FE sib cais ua rau Microhardness qhov tseem ceeb hauv thaj chaw no uas yog qhov tseem ceeb tshaj plaws uas yog thawj zaug ua rau tawg hauv qhov txias- rolled raj. Txhawm rau txheeb xyuas qhov tseeb ntawm cov teeb meem kev txheeb xyuas, cov hlau rau tes tau hloov nrog Tife thiab Valfe hauv cov khoom xyaw TA18. Tsis pom muaj qhov tawg tau nyob rau hauv cov txheej txheem dov tsev tom ntej, qhia tias qhov teeb meem tshuaj xyuas thiab ntsuas kev txhim kho tau zoo.

Txog Peb

Lub tuam txhab khav ua cov khoom lag luam hauv tsev titanium ua ntau lawm, nrog rau:

German -} imported precision titanium raj ntau lawm kab (txhua xyoo tsim muaj peev xwm: 30,000 tons);

Japanese -} technology titanium ntawv ci rolling kab (thinnest rau 6μm);

Qoos motated titanium qws txuas ntxiv mus rau kab extrusion;

Ntse titanium phaj thiab sawb fining;

MES system ua noj digital tswj thiab kev tswj hwm ntawm tag nrho cov txheej txheem ntau lawm, ua tiav cov khoom lag luam seem ntawm ± 0.01M.

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