Warshadaha duubista birta, duubabka loo isticmaalo rogrogmada qaboobaha iyo khadadka duubka kulul ayaa ah qaybo muhiim ah. Sababo la xiriira hababka kala duwan iyo deegaanka isticmaalka ee labada, waxaa sidoo kale jira kala duwanaansho la taaban karo ee xulashada alaabta ee duubka. Waxaan si faahfaahsan u baari doonaa kala duwanaanshaha xulashada shay ee u dhexeeya duubabka loo isticmaalo duubista qabowga iyo xariiqyada duubista kulul.
Marka hore, waxaa jira farqi weyn oo u dhexeeya heerkulka shaqada ee u dhexeeya duubabka xariiqda duubista qabowga iyo duubabka xariiqda duubista kulul. Xariiqyada duubista kulul waxaa lagu fuliyaa heerkul sare waxayna caadi ahaan u baahan yihiin inay u adkeystaan heerkulka u sarreeya 1200 ℃. Sidaa darteed, alaabada duuban ee khadka kululaynta kulul waa inay lahaadaan wax qabad heerkul sare oo heer sare ah iyo iska caabin kuleyl ah. Alaabta caadiga ah waxaa ka mid ah birta shubka ah ee chromium sare, birta xawaaraha sare leh, iyo birta u adkaysata kulaylka. Qalabkani ma aha oo kaliya inay ilaaliyaan xoogga iyo adkaanta heerkulka sare, laakiin sidoo kale waxay ka hortagaan oksaydhka iyo daxalka kulul, taas oo kordhinaysa nolosha adeegga duubista.
Taas bedelkeeda, xariiqyada duubista qabow waxaa lagu fuliyaa heerkulka qolka ama meel u dhow, markaa duubabku uma baahna inay u adkeystaan heerkulka sare. Si kastaba ha noqotee, inta lagu jiro habka qaboojinta qabow, sababtoo ah shuruudaha sare ee tayada dusha sare ee birta xaashida ah, adkaanta dusha sare iyo xirashada caabbinta duubista ayaa si gaar ah muhiim u ah. Duubabka xariijimaha qaboojiya waxaa badanaa laga sameeyaa maaddooyin sida birta alwaax, birta kaarboonka, ama birta chrome plated. Maaddooyinkani waxay leeyihiin qallafsanaan sarreeya waxayna xirtaan caabbinta, taas oo hubin karta in dusha sare ee duubista aan si fudud loo gashan karin muddada dheer ee isticmaalka xoogga badan, taas oo hubinaysa tayada dusha sare ee alaabta.
Marka labaad, culeyska iyo cadaadiska duubabka ee ku duubka qaboojiyaha iyo xadhkaha kululaynta ayaa sidoo kale kala duwan. Khadka tooska ah ee kulul wuxuu u baahan yahay inuu ku cadaadiyo birta heerkulka sare leh ee noocyada kala duwan ee taarikada birta, duubabkuna waxay u baahan yihiin inay u adkeystaan cadaadis weyn iyo saameyn, sidaas darteed maaddada ayaa looga baahan yahay inay yeelato xoog sare iyo adkaan wanaagsan. Xariiqda duubista qabow, sababtoo ah waxaa lagu sameeyay heerkul hoose, badiyaa waxay sitaa xiirid sare iyo xoog xoog leh oo duuban. Sidaa darteed, xulashada walxaha duubabka qabow ee duuban waxay diiradda saarayaan caabbinta xirashada iyo caabbinta daalka.
Intaa waxaa dheer, habka wax soo saarka ee duubista xariiqda qaboojiyaha sida caadiga ah waxay ku lug leedahay habab daaweyn oo badan oo dusha sare ah, sida dajinta chrome, deminta, iwm, si loo sii wanaajiyo adkaanta dusha sare iyo xirashada caabbinta. Si kastaba ha ahaatee, sababtoo ah ka shaqeynta jawi heerkul sare ah, hababkan daaweynta dusha sare kuma habboona duubista khadka kulul ee kulul. Taa baddalkeeda, waxqabadkooda waxaa lagu wanaajiyaa iyada oo loo marayo halabuurka daawaha iyo habka daaweynta kulaylka ee maaddada lafteeda.
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.
Waqtiga boostada: Jul-01-2024
