Muindasitiri yekukungurusa simbi, maromburu anoshandiswa mukutonhora kukungurutsira uye inopisa mitsetse yakakosha yakakosha zvikamu. Nekuda kwemaitiro akasiyana uye mashandisirwo enzvimbo dzezviviri, kune zvakare misiyano yakakura mukusarudzwa kwezvinhu zvemaroll. Isu tichaongorora zvakadzama misiyano yekusarudzwa kwezvinhu pakati pemapumburu anoshandiswa mukutonhora kukungurutsira uye inopisa kukungurutswa mitsetse.
Chekutanga, pane mutsauko wakakura mukupisa kwekushanda pakati peinotonhora yekutenderedza mitsara uye inopisa rolling line rolls. Mitsetse inopisa inomonereka inoitwa patembiricha yakakwira uye kazhinji inoda kumira tembiricha yakakwira kusvika 1200 ℃. Naizvozvo, iyo roll zvinhu zveiyo inopisa rolling mutsara inofanirwa kuve yakanakisa yepamusoro-tembiricha kuita uye kupisa kuneta kuramba. Zvishandiso zvakajairika zvinosanganisira yakakwirira chromium cast iron, high-speed simbi, uye simbi inodzivirira kupisa. Zvinhu izvi hazvisi kungochengetedza simba uye kuoma pakupisa kwepamusoro, asiwo kurwisa oxidation uye kupisa kunopisa, nekudaro kuwedzera hupenyu hwebasa remapumburu.
Kusiyana neizvi, mitsara inotonhora inotenderera inoitwa kana padyo nekamuri tembiricha, saka mipumburu haifanire kumira kutonhora kwakanyanya. Zvisinei, panguva yekutonhora kwekukunguruka, nekuda kwezvinodiwa zvepamusoro zvehutano hwepamusoro hwepepa resimbi, kuoma kwepamusoro uye kupfeka kushorwa kwemapumburu kunonyanya kukosha. Cold rolling line rolls inowanzogadzirwa nezvinhu zvakaita sealloy tool simbi, carbon tool steel, kana chrome plated steel. Zvinhu izvi zvine hurema hwakakura uye hupikisi hwekupfeka, izvo zvinogona kuve nechokwadi chekuti pamusoro pemapumburu haapfekedzwe nyore panguva yenguva refu-yepamusoro-simba kushandiswa, nekudaro kuve nechokwadi chepamusoro pechigadzirwa.
Chechipiri, mutoro uye kumanikidzwa kwemapumburu pane inotonhora inotenderedza uye inopisa rolling mitsetse yakasiyanawo. Mutsara unopisa unotenderera unoda kudzvanya mabheti esimbi epamusoro-soro mune zvakasiyana-siyana zvemahwendefa esimbi, uye mipumburu inoda kushingirira kumanikidzwa kukuru uye kukanganisa, saka zvinhu zvinodiwa kuti zvive nesimba rakakura uye kusimba kwakanaka. Iyo inotonhora yekutenderedza mutsara, nekuda kwekuitwa kune yakaderera tembiricha, inotakura yakakwira shear uye friction forces pamapumburu. Naizvozvo, iyo kusarudzwa kwezvinhu zveinotonhora rolling rolls inotarisa zvakanyanya pakuramba kwavo kupfeka uye kuramba kuneta.
Uye zvakare, iyo nzira yekugadzira inotonhora inotenderedza mitsara rolls inowanzo sanganisira akawanda epamusoro ekurapa maitiro, senge chrome plating, kudzima, nezvimwe, kuti vaenderere mberi nekuvandudza kuoma kwavo kwepamusoro uye kuramba kupfeka. Nekudaro, nekuda kwekushanda munzvimbo dzekudziya kwepamusoro, idzi nzira dzekurapa dzepamusoro hadzina kufanira kupisa mitsara yekutenderera. Pane kudaro, kushanda kwavo kunowedzerwa kuburikidza nekugadzirwa kwealloy uye kupisa kwekupisa kwechinhu chacho pachako.
In summary, there are significant differences in the material selection of rolls for cold rolling and hot rolling lines, mainly reflected in the different requirements for working temperature, load, pressure, and surface quality. Hot rolling line roll materials need to have excellent high-temperature performance and thermal fatigue resistance, while cold rolling line roll materials emphasize high hardness and high wear resistance. Understanding and correctly selecting suitable roll materials is of great significance for ensuring the stability of the rolling process and product quality. As always, we sincerely appreciate your support and business. Please do not hesitate to contact ssophie@welongchina.com if you have any questions or concerns. We look forward to continuing our partnership with you.
Nguva yekutumira: Jul-01-2024
