Roll mefuta e fapaneng le tshebetso ya ho etsa thepa ka tsoelo-pele ea theknoloji metallurgical le ho iphetola ha lintho tšepe rolara thepa le ntshetsopele e tsoelang pele.Bohareng ba lekholo la bo18 la lilemo, Brithani e ile ea ipabola theknoloji ea tlhahiso ea lirolo tsa tšepe tse hatselitsoeng bakeng sa lipoleiti tse kolobang, ’me halofong ea bobeli ea lekholo la bo19 la lilemo, tsoelo-pele ea theknoloji ea Europe ea ho etsa litšepe e ne e hloka ho kolokisoa ha lithane tse khōloanyane tsa li-ingots. 'me matla a tšepe ea tšepe e bohlooho kapa lirolo tsa tšepe tse hatselitsoeng li ne li sa khone ho fihlela litlhoko.Likahare tsa carbon tsa 0.4% ho isa ho 0.6% tsa meqolo e tloaelehileng ea tšepe e entsoeng ka tšepe e hlahile ka tsela e nepahetseng.Ho hlaha ha thepa e boima ea forging ho tsoela pele ho ntlafatsa ho tiea ha meqolo e entsoeng ka mokhoa ona.tšebeliso ea likarolo tsa motsoako le ho kenngoa ha phekolo ea mocheso mathoasong a lekholo la bo20 la lilemo ho ile ha ntlafatsa haholo ho hanyetsa ho roala le ho tiea ha li-roll tse chesang le tse batang tsa tšepe.Ho eketsoa ha molybdenum ho lahlela meqolo ea tšepe bakeng sa lakane e chesang e kolobisitsoeng le hlobolisa ho ile ha ntlafatsa boleng ba bokaholimo ba thepa e phuthoang.Ho tšeloa ka motsoako ka mokhoa oa ho hlatsoa ho ntlafatsa haholo matla a mantlha a li-roll.
Thepa ka palo e kholo ea likarolo tsa alloying ke ka mor'a Ntoa ea Bobeli ea Lefatše, e leng phello ea lisebelisoa tse pota-potileng ho ea ka tekanyo e kholo, e tsoelang pele, ka lebelo le phahameng, nts'etsopele e ikemetseng, hammoho le matla a lintho tse bonahalang, ho hanyetsa deformation ho eketsa ts'ebetso ea moqolo. ditlhoko.Nakong ena, ho ile ha hlaha meqolo ea tšepe ea semi-steel le meqolo ea tšepe ea ductile, le phofomeqolo ea tungsten carbideli ile tsa ntlafatsoa ka katleho ka mor'a lilemo tsa bo-1960.centrifugal lahla thekenoloji le phapang mocheso mocheso kalafo thekenoloji ea meqolong ba ile ba khothaletsoa ho pharaletseng Japane le Europe mathoasong a lilemo tsa bo-1970, e leng haholo ntlafatsa tshebetso kakaretso ea meqolo hlobolisa.Lirolo tsa tšepe tse entsoeng ka chromium e phahameng li ile tsa sebelisoa ka katleho liloaleng tse chesang.Ka nako e ts'oanang, lirolo tsa tšepe tse tšoeu tse entsoeng ka tšepe le li-semi-steel li ne li sebelisoa Japane.80s Europe le ho hlahisoa ha meqolo e phahameng ea tšepe ea chromium le lera le thata haholo la meqolo e batang le meqolo e khethehileng ea alloy cast iron bakeng sa likarolo tse nyane le ho phethoa ha melamu ea terata.Nts'etsopele ea theknoloji ea sejoale-joale ea ho roala tšepe e lebisitse ho nts'etsopele ea meqolo e phahameng ea ts'ebetso.Tšebeliso ea lisebelisoa tsa centrifugal le mekhoa e mecha ea composite e kang mokhoa o tsoelang pele oa ho lahla (mokhoa oa CPC), mokhoa oa ho beha jet (mokhoa oa Osprey), mokhoa oa ho tjheseletsa oa electroslag le mokhoa o chesang oa ho hatella oa isostatic ho hlahisa motheo oa boima bo botle ba tšepe e entsoeng kapa tšepe ea ductile, karolo e ka ntle ea letoto la litšepe tse nang le lebelo le phahameng la meqolo e kopaneng le meqolo ea tšepe ea ceramic e sebelisitsoe Europe, Japane, moloko o mocha oa profiles, terata, lifela tse hlobolang.
China e ile ea qala ho hlahisa li-casting rolls ka lihlopha ho tloha lilemong tsa bo-1930, empa ho ne ho e-na le mefuta e fokolang haholo.setsebi sa pelemoqolo oa tungsten carbidesemela se thehiloe Xingtai, Hebei ho elella bofelong ba lilemo tsa bo-1950.ka 1958, Anshan Iron and Steel Company e ile ea etsa teko ea pele ea machaba 'me ea sebelisa meqolo e meholo ea tšepe ea ductile bakeng sa 1050 primary rolling.lilemong tsa bo-1960, lirolo tse batang le lirolo tse kholo tsa tšepe tse entsoeng li ile tsa etsoa ka katleho.ho elella bofelong ba lilemo tsa bo-1970, Taiyuan Iron and Steel Company 'me Ho elella bofelong ba lilemo tsa bo-70, Taiyuan Iron and Steel Company le Beijing Iron and Steel Research Institute li kopane li ile tsa hlahisa meqolo ea tšepe ea centrifugal bakeng sa leloala le chesang le chesang le tsoelang pele. Xingtai Metallurgical Machinery Roll Co. le mefuta e meng e mecha.Lilemong tsa bo-1990, tlhahiso ea China e se e fihletse litlhoko tsa lehae mme karolo e 'ngoe e rometsoe kantle ho naha, empa mofuta o tlameha ho eketseha le boleng bo tlameha ho ntlafatsoa.
Nako ea poso: May-23-2023
