Qhov qis-alloy hloov hlau yog ua tiav los ntawm kev siv cov txheej txheem hauv tub yees nruab nrab
1. Txo cov kev siv ntawm txhuas alloy
Ua ntej kev nqis peev hauv billet hauv lub tub yees, qhov ua tau zoo ntawm NB yog 114 {{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{ Tsis tas li ntawd, cov thawj tsawg-alloy hloov steel sib xyaw ntawm cov txheej txheem me me, uas yog siv rau kev tsim khaub thuas nruab nrab, uas yog siv los hloov cov txheej txheem hluav taws xob qis dua thiab tsim khoom, nrog lub zog nruab nrab ntawm 355.60Mpa, thiab cov nyhuv thov tau zoo heev.
2. Txhim Kho Cov Tsev
Cov txheej txheem hauv tub yees nruab nrab tuaj yeem tsim nyog ua kom muaju. Cov me nyuam nyob sab hauv tsev ntawm 25mm thickness tsawg-alloy rand steel yog qhov zoo, thiab cov ferrite grain loj me me qib kawm ntawm 1\/4 ntawm cov tuab yog 10.4 ~ 10.6; Ferrite grag loj ntawm 1\/4 ntawm cov tuab ntawm cov qes-alloy round steel tsim los ntawm cov txheej txheem yooj yim dov ua kev siv tshuab yog 8.6 ~ 9.1 qib. Ib qho ntxiv, raws li kev ua haujlwm ntawm tag nrho cov txheej txheem ntawm cov kab tub yees ntawm nruab nrab ntawm cov khoom sib txawv ntawm nws cov yam ntxwv sib txawv kuj maj mam txhim kho.
3. Txhim Kho Lub Cev Kev Ua Haujlwm
Cov txiaj ntsig ntawm kev sib piv ntawm cov khoom siv lub cev ntawm 16 hli tuab cov kev cuam tshuam tau hais tias lub zog nruab nrab tau txhim kho los ntawm lub tub yees nruab nrab, thiab 30mpa kom tau nce ntxiv los ntawm lub cev thiab lub zog sib txawv, thiab lub zog elonge, thiab lub elongation tsis muaj tseeb. Qhov laj thawj tseem ceeb yog qhov nruab nrab tub yees tsim nyog txoj kev loj hlob ntawm kev ua haujlwm ntawm kev ua haujlwm-nmening martensitic siv lead ua, thiab muaj txiaj ntsig zoo los txhim kho kev ductility.
Thib plaub, txhim kho kev tsim khoom
Muab piv cov khoom lag luam ntawm cov khoom hauv nruab nrab ntawm cov peev txheej ua ntej thiab tom qab kev nqis peev: Thaum 7 daim ntawm lub caij txias tau xaiv, lub sijhawm tos ntawm daim tseem 19min52s rau 15min2S; Rau 79mm tuab tuab billets, cov khoom lag luam ntawm 46mm tsawg-alloy round-rolls tuaj yeem nce ntawm ob peb daim ntawm cov hlau txias tuaj yeem nce ntawm 12.67%.