Tarihin Rolls

Mirgine iri-iri da tsarin masana'antu tare da ci gaban fasahar ƙarfe da haɓakar kayan aikin mirgina ƙarfe da ci gaba da haɓakawa.A tsakiyar karni na 18, Biritaniya ta kware wajen kera fasahar sarrafa rodi na simintin ƙarfe mai sanyi don mirgina faranti, kuma a cikin rabin na biyu na ƙarni na 19, ci gaban fasahar yin ƙarfe na Turai ya buƙaci mirgina manyan ton na ingots. kuma ƙarfin ko dai ƙarfen simintin simintin simintin gyare-gyare ko sanyin simintin ƙarfe ba zai iya cika buƙatun ba.Abubuwan da ke cikin carbon na 0.4% zuwa 0.6% na yau da kullun na simintin ƙarfe an haife su daidai da haka.Fitowar kayan aikin ƙirƙira nauyi don ƙara haɓaka taurin jujjuyawar wannan abun.Yin amfani da abubuwan haɗakarwa da kuma shigar da maganin zafi a farkon karni na 20 ya inganta haɓaka juriya da taurin simintin gyare-gyare da ƙirƙira ƙarfe mai zafi mai zafi da naman sanyi.Bugu da kari na molybdenum don jefa baƙin ƙarfe rolls don zafi birgima takarda da tsiri inganta ingancin saman kayan birgima.Haɗin zubewa ta hanyar ɗigon ruwa yana inganta ainihin ƙarfin juzu'in simintin gyaran kafa.

Mirgine a cikin babban adadin alloying abubuwa ne bayan yakin duniya na biyu, wanda shi ne sakamakon mirgina kayan aiki zuwa ga babban-sikelin, ci gaba, high-gudun, sarrafa kansa ci gaba, kazalika da mirgina kayan ƙarfi, nakasawa juriya don ƙara yi nadi yi. bukatun.A wannan lokacin, Semi-karfe Rolls da ductile baƙin ƙarfe Rolls sun bayyana, da fodatungsten carbide rollsan samu nasarar haɓakawa bayan shekarun 1960.Fasahar simintin simintin centrifugal da fasahar kula da zafin zafi na daban-daban na Rolls an haɓaka ko'ina a Japan da Turai a farkon shekarun 1970, wanda ya inganta aikin gabaɗayan tsiri.An yi nasarar amfani da rodi na simintin ƙarfe na chromium mai ƙarfi a cikin injinan tsiri mai zafi.A daidai wannan lokacin, an yi amfani da jabun farin ƙarfe da naɗaɗɗen ƙarfe a Japan.80s Turai da kuma gabatarwar high chromium karfe Rolls da matsananci-zurfi taurare Layer na sanyi Rolls da musamman gami jefa baƙin ƙarfe Rolls ga kananan sassan da waya sanda karewa.Haɓaka fasahar mirgina ƙarfe na zamani ya haifar da haɓaka mafi girma na nadi.Yin amfani da simintin centrifugal da sabbin hanyoyin haɗin gwiwa kamar ci gaba da yin simintin haɗaɗɗiyar hanyar (hanyar CPC), hanyar jigilar jet (hanyar Osprey), hanyar walda electroslag da hanyar latsawa mai zafi don samar da ainihin tauri mai kyau na ƙirƙira ƙarfe ko ƙarfe ductile, da m Layer na high-gudun karfe jerin composite Rolls da karfe yumbu Rolls da aka yi amfani a Turai, Japan, wani sabon ƙarni na profiles, waya sanda, tsiri Mills.

Kasar Sin ta fara samar da nadi a cikin batches tun daga shekarun 1930, amma akwai kadan iri.gwani na farkotungsten carbide yiAn kafa shuka a Xingtai, Hebei a ƙarshen 1950s.a cikin 1958, Anshan Iron and Steel Company ya yi gwaji na farko na ƙasa da ƙasa kuma ya yi amfani da manyan naɗaɗɗen ƙarfe don mirgina 1050 na farko.a shekarun 1960, an yi nasarar kera rodi mai sanyi da manyan rodi na karfe na jabu.A karshen 1970s, Taiyuan Iron da Karfe Company da kuma A cikin marigayi 70s, Taiyuan Iron da Karfe Company da Beijing Iron da Karfe Research Institute tare da hadin gwiwa samar da centrifugal simintin ƙarfe nadi ga tanderun nada mirgina niƙa da zafi ci gaba da Broadband karfe mirgina naúrar, da kuma Xingtai Metallurgical Machinery Roll Co. da sauran sabbin iri.Ya zuwa shekarun 1990, noman nadi na kasar Sin ya cika bukatun cikin gida da kuma fitar da su zuwa kasashen waje, amma dole ne a kara yawan nau'in, kuma a inganta ingancinsu.