Yob ntau yam thiab tsim cov txheej txheem nrog kev nce qib ntawm metallurgical technology thiab evolution ntawm steel dov khoom thiab kev loj hlob tsis tu ncua.Nyob rau hauv nruab nrab ntawm lub xyoo pua 18th, teb chaws Aas Kiv tau paub txog kev tsim cov tshuab chilled cam khwb cia hlau yob rau dov steel daim hlau, thiab nyob rau hauv lub thib ob ib nrab ntawm lub xyoo pua 19th, cov kev vam meej ntawm European steel-ua technology yuav tsum tau lub dov ntawm loj tonnage ntawm ingots, thiab lub zog ntawm grey cam khwb cia hlau los yog chilled cam khwb cia hlau yob tuaj yeem ua tsis tau raws li qhov yuav tsum tau ua.Cov ntsiab lus carbon ntawm 0.4% mus rau 0.6% zoo tib yam cam khwb cia hlau yob tau yug los raws li.Qhov tshwm sim ntawm hnyav forging cov cuab yeej los txhim kho lub toughness ntawm forged yob ntawm no muaj pes tsawg leeg.Kev siv cov ntsiab lus alloying thiab kev taw qhia txog kev kho cua sov thaum ntxov xyoo pua 20th tau txhim kho qhov hnav tsis kam thiab toughness ntawm cam khwb cia thiab forged steel kub rolls thiab txias yob.Qhov sib ntxiv ntawm molybdenum rau cam khwb cia hlau yob rau cov ntawv kub dov thiab sawb txhim kho qhov zoo ntawm cov khoom dov.Kev sib xyaw ua ke los ntawm txoj kev flushing zoo txhim kho lub zog tseem ceeb ntawm cam khwb cia yob.
Yob nyob rau hauv ib tug loj tus naj npawb ntawm cov ntsiab lus alloying yog tom qab Tsov Rog Thoob Ntiaj Teb thib Ob, uas yog qhov tshwm sim ntawm cov khoom siv dov mus rau qhov loj, tsis tu ncua, kev kub ceev, kev txhim kho tsis siv neeg, nrog rau cov khoom siv dov lub zog, deformation tsis kam ua kom cov yob kev ua tau zoo. kev xav tau.Thaum lub sij hawm no, semi-steel rolls thiab ductile hlau rolls tshwm, thiab hmoovtungsten carbide yobtau tsim ua tiav tom qab xyoo 1960.centrifugal casting thev naus laus zis thiab qhov sib txawv ntawm qhov kub thiab txias kev kho cua sov thev naus laus zis ntawm cov yob tau nthuav dav hauv Nyij Pooj thiab Europe thaum ntxov xyoo 1970, uas tau txhim kho qhov kev ua tau zoo ntawm cov hlua khi.Composite high-chromium cam khwb cia hlau yob kuj tau ntse siv nyob rau hauv kub sawb mills.Nyob rau tib lub sijhawm, forged dawb hlau thiab semi-steel yob tau siv nyob rau hauv Nyiv.80s Tebchaws Europe thiab kev taw qhia ntawm high chromium steel rolls thiab ultra-ntev hardened txheej ntawm txias yob thiab tshwj xeeb alloy cam khwb cia hlau yob rau me me thiab hlau pas nrig xov.Txoj kev loj hlob ntawm niaj hnub steel dov tshuab tau coj mus rau txoj kev loj hlob ntawm kev ua tau zoo dua rolls.Kev siv cov centrifugal casting thiab cov txheej txheem tshiab sib xyaw xws li kev nruam casting sib xyaw (CPC txoj kev), dav hlau tso txoj kev (Osprey txoj kev), electroslag vuam txoj kev thiab kub isostatic nias txoj kev los tsim cov tub ntxhais zoo toughness ntawm forged hlau los yog hlau ductile, txheej txheej ntawm high-speed steel series ntawm composite yob thiab hlau ceramic yob tau siv nyob rau hauv cov teb chaws Europe, Nyiv, ib tug tshiab tiam ntawm profiles, hlau qws, sawb mills.
Tuam Tshoj pib tsim cov rolls nyob rau hauv batch los ntawm 1930s, tab sis muaj tsawg heev ntau yam.thawj tus kws tshaj lijtungsten carbide yobcog tau tsim nyob rau hauv Xingtai, Hebei nyob rau hauv lig 1950s.Xyoo 1958, Anshan Iron thiab Steel Company tau ua thawj qhov kev sim thoob ntiaj teb thiab siv cov hlau ductile loj rau 1050 thawj dov.Hauv xyoo 1960, cov yob txias thiab cov hlau forged loj tau ua tiav tiav.Nyob rau xyoo 1970s, Taiyuan Hlau thiab Hlau Tuam Txhab thiab Hauv 70's lig, Taiyuan Iron thiab Steel Company thiab Beijing Iron thiab Steel Research Institute koom ua ke tsim cov centrifugal cam khwb cia hlau yob rau lub cub tawg coil dov zeb thiab kub nruam broadband steel rolling unit, thiab Xingtai Metallurgical Machinery Roll Co. thiab lwm yam tshiab.Los ntawm xyoo 1990, Tuam Tshoj cov yob ntau lawm tau ua tau raws li cov kev xav tau hauv tsev thiab ib nrab xa tawm, tab sis ntau yam yuav tsum tau nce thiab qhov zoo yuav tsum tau txhim kho.
Post lub sij hawm: May-23-2023
