Kwishishini lokuqengqeleka kwentsimbi, imiqulu esetyenziswa ekuqengqelekeni okubandayo kunye nemigca eshushu yokuqengqeleka zizinto ezibalulekileyo ezingundoqo. Ngenxa yeenkqubo ezahlukeneyo kunye nemeko yokusetyenziswa kwezi zimbini, kukho umahluko omkhulu ekukhetheni izinto eziqulethwe yimiqulu. Siza kuphonononga ngokweenkcukacha iiyantlukwano ekukhethweni kwezinto ezibonakalayo phakathi kwemiqulu esetyenziselwa ukuqengqeleka okubandayo kunye nemigca eshushu yokuqengqeleka.
Okokuqala, kukho umahluko obonakalayo kwiqondo lobushushu lokusebenza phakathi kwemiqulu ebandayo yomgca wokuqengqeleka kunye nemiqulu eshushu yokuqengqeleka. Imigca eshushu yokuqengqeleka yenziwa kumaqondo obushushu aphezulu kwaye ikholisa ukumelana namaqondo obushushu afikelela kuma-1200 ℃. Ke ngoko, izinto zokuqengqeleka zomgca oshushu wokuqengqeleka kufuneka zibe nokusebenza okuphezulu kakhulu kobushushu obuphezulu kunye nokumelana nokudinwa kwe-thermal. Izinto eziqhelekileyo zibandakanya intsimbi ephezulu yechromium, intsimbi enesantya esiphezulu, kunye nentsimbi ekwazi ukumelana nobushushu. Ezi zixhobo azigcini nje kuphela amandla kunye nobunzima kumaqondo aphezulu, kodwa zixhathisa i-oxidation kunye ne-corrosion eshushu, ngaloo ndlela yandisa ubomi benkonzo yee-rolls.
Ngokuchasene noko, imigca epholileyo epholileyo iqhutyelwa kwindawo okanye kufuphi nobushushu begumbi, ngoko ke imiqulu ayifuni ukumelana nokushisa okuphezulu. Nangona kunjalo, ngexesha lenkqubo ebandayo yokuqengqeleka, ngenxa yeemfuno eziphakamileyo kumgangatho ongaphezulu wephepha lesinyithi, ukuqina komphezulu kunye nokumelana nokunxiba kwemiqulu kubaluleke kakhulu. Imiqulu yokuqengqeleka epholileyo idla ngokwenziwa ngezinto ezifana nentsimbi yensimbi yentsimbi, isixhobo sekhabhoni, okanye intsimbi ye-chrome. Ezi zixhobo zinobunzima obuphezulu kunye nokuxhatshazwa kokugqoka, okunokuqinisekisa ukuba umphezulu wemiqulu awugqithwanga lula ngexesha elide lokusetyenziswa kwamandla aphezulu, ngaloo ndlela uqinisekisa umgangatho womhlaba wemveliso.
Okwesibini, umthwalo kunye noxinzelelo lwemiqulu kwi-cold rolling kunye nemigca eshushu eshushu nayo iyahluka. Umgca oshushu oshushu kufuneka ucinezele iibhilidi zetsimbi eziphezulu kwiimpawu ezahlukahlukeneyo zentsimbi, kwaye imiqulu kufuneka ikwazi ukumelana noxinzelelo olukhulu kunye nefuthe, ngoko ke izinto ezifunekayo ukuba zibe namandla aphezulu kunye nokuqina okuhle. Umgca wokuqengqeleka obandayo, ngenxa yokuqhutywa kumaqondo obushushu asezantsi, ikakhulu uthwala ukucheba okuphezulu kunye nemikhosi yokukhuhlana kwimiqulu. Ke ngoko, ukukhethwa kwezinto zezinto ezibandayo zokuqengqeleka kugxile ngakumbi ekuxhathiseni kwabo ukunxiba kunye nokumelana nokukhathala.
Ukongeza, inkqubo yokuvelisa i-roll rolling rolls ebandayo ihlala ibandakanya iinkqubo ezingaphezulu zonyango, ezifana ne-chrome plating, ukucima, njl. Nangona kunjalo, ngenxa yokusebenza kwiindawo eziphezulu zokushisa, ezi ndlela zonyango zomphezulu azifanelekanga kwi-hot rolling line rolls. Kunoko, ukusebenza kwabo kuphuculwe ngokubunjwa kwe-alloy kunye nenkqubo yokunyanga ukushisa kwezinto ngokwazo.
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.
Ixesha lokuposa: Jul-01-2024
