I-level shaft rollers kunye ne-rollformer spare parts azifane zisilele ngesizathu esinye, esicacileyo. Kwimizila ye-galvanizing eqhubekayo, i-roller ekhangeleka ngokugqibeleleyo kwinkonzo yomzobo inokuguga kwiiveki-okanye iqalise ukumisa umgca xa i-bearing ibamba kwaye i-roll iwa kwizindlu zayo. Umahluko phakathi kwe-roller ehlala kwaye enye iba yintloko yesondlo idla ngokuhla kwizigqibo ezibini ezenziwe ixesha elide ngaphambi kokuba inxalenye ifikelele kumgca: indlela yokungaphumeleli kwafunyaniswa ngayo, kwaye ingaba izinto eziphathekayo kunye nonyango oluphezulu luhambelana ngokwenene neemeko zokusebenza.
Esi sikhokelo sivavanya iindlela eziphambili zokungaphumeleli kwi-level kunye ne-rollformer rolls, izinto eziphathekayo kunye nokukhetha okunzima okuzijongana nazo, kunye neemfuno zejometri ezichaza ukuba i-spare part entsha yenza njengoko bekujoliswe kuyo okanye iba kukungaphumeleli okuphindayo okulandelayo.
Kutheni iiRola zeLevel Shaft zisilela kwiMigca yokuGalvanyisa
Inyathelo lokuqala ekuchazeni i-roller yokutshintshwa kukuqonda ukuba yintoni engazange iphumelele. Ekufakeni isinyithi kwizilinganisi zoxinzelelo lwentambo, iindlela ezimbini zokusilela zilawula, kwaye zifuna izisombululo ezahlukeneyo.
Ukunxiba komphezulu wokuqengqeleka kunye nokutshiza. Uluhlu lomsebenzi luqhagamshelana nomcu phantsi koxinzelelo kunye namandla okugoba. Xa imilo yemicu ingalunganga-amaza asemphethweni, intsimbi esembindini, okanye i-weld seams-umphezulu womqulu ufunxa impembelelo egxininisiweyo kunye nonxibelelwano olurhabaxa. Uphando kuluhlu lwemisebenzi yoxinzelelo luchonga ukunxitywa kwe-abrasive njengeyona ndlela yokunxiba yokuqala, eneziphene zokumila komtya oqengqelekayo oxelwe njengoyena nobangela wokunxitywa kweroli engaqhelekanga. Izikali kunye nezinto zangaphandle ezibanjwe phakathi kwee-work rolls kunye ne-backup rolls zidibanisa ingxaki, zivelise uburhabaxa kunye nomonakalo womphezulu othi utshintshele kumcu. Kwiimeko ezimandundu, amanqaku okuqengqeleka okanye iziphene ezingaphantsi komhlaba zinokunwenwela kwiziganeko zokuchitheka, naphantsi kwamandla asezantsi okuqengqeleka okuqhelekileyo okufana nezileveli zokugalela.
Ukungaphumeleli kwe-roll-end kunye nokwehla komqulu. Imowudi yokusilela ethe ngqo kwiyunithi yokugoba kwinqanaba loxinzelelo ifuna ingqalelo eyahlukileyo. Uphando kwimigca ye-galvanizing eqhubekayo lubonisa ukuba amandla e-axial asebenza kwiibhodi zenkxaso ekupheleni komsebenzi abangela ukuguga okuqhubekayo. Nje ukuba elinye icala linxibe ngokwaneleyo, ibherethi echaseneyo inokubalekela umkhono wayo wokuxhasa-okukhokelela ekuphumeni komqulu ukusuka kwindlu, ukukrwela umtya, kwaye kunokubangela ukuqhawuka komgca. Oku akuyongxaki ye-roll body. Ingumba wenqanaba lenkqubo obandakanya ukukhetha ukuthwala, umgangatho wendibano, kunye nolawulo lomthwalo we-axial. Ukutshintsha i-roller ngaphandle kokujongana neemeko zokuthwala kunye nokulungelelanisa akuyi kuthintela ukuphindaphinda.
Intsingiselo esebenzayo iqondile: ngaphambi kokuba u-odole i-roller ye-shaft ye-level, qinisekisa ukuba inxalenye engaphumeleliyo ibonisa umonakalo owenziwe phezu komhlaba okanye umonakalo we-bearing-interface. Amanqaku angaphambili abhekiselele kuphuculo lwezinto eziphathekayo kunye nobunzima; le yokugqibela ifuna ukuphononongwa kwendibano engqongileyo.
UKhetho lweMathiriyeli yeLeveli kunye neRollformer Rolls
Ukukhethwa kwezinto eziphathekayo kwi-level kunye ne-rollformer rolls yibhalansi phakathi kokumelana nokunxiba komphezulu kunye nokuqina okungundoqo. I-alloy eqinisiweyo enekhabhoni ephezulu kunye nomxholo wechromium iyaxhathisa i-abrasion kodwa inokuba brittle phantsi kwemithwalo egotywayo. Intsimbi esezantsi yealloyi enamandla angundoqo inokunxiba ngokukhawuleza kumphezulu. Ukhetho oluchanekileyo luxhomekeke ekubeni yeyiphi imo yokungaphumeleli eyongamele.
Iintsimbi zechromium ezinekhabhoni ephezulu afana nodidi lwe-GCr15 lwamabanga axhaphakile kwizicelo zoluhlu apho ukunxitywa kwe-abrasive kuyeyona nto ixhalabisayo. Basabela kakuhle ekuqineni kwaye banokufikelela ubulukhuni bomphezulu kwi-HRC 58-62 uluhlu, okwenza ukuba bafanelekele imiqulu yomsebenzi edibanisa i-strip kunye ne-scale or oxide contamination. Kwizikhululo ezenza i-rollformer, amabakala afanayo avela njengezixhobo zokuqengqeleka, ngokufuthi kunye ne-hard chrome plating yokukhusela umphezulu owongezelelweyo.
Iintsimbi zesixhobo se-alloy afana namabakala e-9Cr2Mo kunye ne-60CrMoV-type anika ibhalansi eyahlukileyo. Banikezela ukuxhathisa okwaneleyo kokunxiba kunye nokuqina okungcono okungundoqo kunamabakala aphezulu ekhabhoni chromium, ezenza ukuba zikhetheke apho imithwalo egobayo ibalulekile kwaye umqulu kufuneka uxhathise ukuphambuka ngaphandle kokuqhekeka. Ukusetyenziswa kweleveli apho i-diameter ye-roll inqunyelwe yijometri yezindlu, lo mda wobunzima ubalulekile.
I-alloys esekwe kwiCobalt faka umfanekiso xa amaqondo obushushu okusebenza okanye ukuvezwa kweekhemikhali kudlula i-alloys esekwe kwintsimbi enokunyamezela. Iirola ezisemgangathweni ze-42CrMo4 ziye zabonwa ziqhekeka kwiindawo ezine-sulfide etyebileyo, ngelixa i-AMS 5387 cobalt alloy ixhathisa ukurhawuka kumaqondo obushushu aphakamileyo kwaye igcina umphezulu ocolekileyo emva kokusila. Oku akuthethi ukuba i-cobalt alloys luhlaziyo olungagqibekanga kuyo yonke i-roller ye-galvanizing line. Ziyisisombululo esijoliswe kuyo kwiimeko apho ukuhamba ngebhayisikile eshushu okanye imidiya ebolileyo ithoba iintsimbi eziqhelekileyo ngokukhawuleza kunokunxitywa koomatshini kuphela kunokuqikelela.
I-Rollformer eyenza imiqulu zisebenza phantsi kwezinto eziphambili ngokubaluleka. Ukugoba kunye nokwenza imithwalo iyongamele, kwaye ukutyhileka kwe-thermal kwi-galvanizing-line akukho. Ukucaciswa kwezixhobo zeshishini ngokuqhelekileyo kuluhlu lwe-GCr15 okanye i-AISI 1045 yentsimbi yokwenza imiqulu, enobulukhuni kuluhlu lwe-HRC 58-62 kunye nokuzikhethela kwe-chrome plating. Imfuno ebalulekileyo ye-rollformer rolls kukuhambelana kweprofayili kunye nokuchaneka kwe-dimensional kuyo yonke isethi yomqulu, kungekhona ukusebenza okuphezulu kobushushu.
Ukuqina komphezulu kunye noKhetho loNyango
Emva kokuba kukhethwe izinto ezisisiseko, unyango lwangaphezulu lumisela ukuba umqulu uxhathisa ixesha elingakanani ngaphambi kokufikelela kumda wokutshintshwa.
Ukwenziwa lukhuni Ihlala iyindlela esemgangathweni yoluhlu lomsebenzi. Injongo ngumaleko onzima (ngokuqhelekileyo i-HRC 58-63) exhaswa ngundoqo oqinileyo. Ukuqina kobunzulu kufuna isigwebo: kunzulu kakhulu kwaye ityala ligugile okanye lihamba phantsi komthwalo; nzulu kakhulu kwaye uxinzelelo olushiyekileyo okanye ukuqaqanjelwa kuyanda. Njengesikhokelo sobunjineli ngokubanzi, ubunzulu betyala obusebenzayo buhlala bugcinwa ngaphakathi kwe-5% ukuya kwi-10% yedayamitha yomzimba womqulu, kodwa iingcebiso ezithile zobunzulu kufuneka ziphume kumenzi woluhlu olusekwe kwidatha yesicelo, hayi kwitafile yegeneric.
Ukufakwa kwe-chrome enzima isebenza ngeenjongo ezimbini kwi-level kunye ne-rollformer rolls. Ibonelela ngomphezulu ophantsi onciphisa ukuncamathelisa kunye ne-pickup yezinto, kwaye inikezela ngokhuseleko lokutya kwiindawo apho i-zinc splash okanye ukufuma ikhona. Imiqulu yokusebenza yomgangatho woxinzelelo iyafumaneka kurhwebo ngobunzima obuphezulu be-chrome yokugquma kubukhulu obujikeleze i-65 μm, idityaniswe noburhabaxa bomphezulu. Kwiirollformer rolls ezisebenza kwi-galvanized or pre-painted strip, i-chrome coating malunga ne-0.05 mm yinto eqhelekileyo.
Ulawulo lokugqiba umphezulu ayinakwahlulwa kukuqina kunye nokwaleka. Umphezulu oqinileyo kodwa oqingqileyo womhlaba useza kuthatha isikali kwaye unxibe ngaphambi kwexesha. Ngakolunye uhlangothi, umphezulu ogudileyo ngokugqithisileyo unokunciphisa ukutsalwa kwemichilo kwimigangatho ethile okanye ukwenza amapasi. Uburhabaxa obufanelekileyo buxhomekeke kwinkqubo: umgca wokuqhagamshelana umsebenzi uchaza ukugqitywa okucokisekileyo, ngelixa iiroli ezigcinayo okanye iiroli zesikhokelo zinokunyamezela imiphezulu erhabaxa. Imiqulu yorhwebo yomgangatho wokuxinezeleka dwelisa uburhabaxa bomphezulu njengeRa 0.2 μm okanye ngaphantsi kwezicelo ezithile, kodwa oku akufuneki kuthathwe njengento ekujoliswe kuyo jikelele.
Ukunyamezela kunye neeMfuno zoMphezulu ezichaphazela uBomi beRoll
Umgangatho wejometri we-level shaft roller awuchaphazeli kuphela ukugqabhuka kwe-strip kodwa kunye nokuthwala ubomi kunye nepateni yokunxiba yomqulu.
Ukujikeleza kunye ne-cylindricity Ichaphazela ngokuthe ngqo indlela umthwalo osasazwa ngayo kwibheringi kunye nobubanzi bomcu. Umqulu ongqukuva ongekho mgangathweni uya kunyanzelisa imithwalo ye-radial ejikelezayo kwiibheringi zayo ngalo lonke uhlaziyo, isantya sokudinwa. Imiqulu yorhwebo yomgangatho woxinzelelo ibonelelwa ngokunyamezela okungqukuva okuqinileyo njenge-0.010 mm okanye ngaphantsi, kunye nokunyamezelwa kwe-cylindricity kuluhlu lwe-0.005-0.01 mm. La manani amele iimveliso ezichanekileyo, hayi amandla omatshini ngokubanzi, kwaye kufuneka achazwe kuphela xa isicelo sithethelela iindleko.
Ukubaleka okusetyhula ichaphazela ukungcangcazela kunye nokulandela umcu. Umqulu ophelelwa yinyani uya kuvelisa ukuguquguquka kobuninzi bexesha okanye ukuphawulwa komphezulu. Iimpawu ezifanayo zorhwebo luhlu lwesetyhula yokunyamezela ukugijima kwe-0.010-0.018 mm.
Ukuhambelana kwedayamitha kwiseti yokuqengqeleka yimfuneko ehlala ingahoywa. Kwi-level okanye i-rollformer, ii-rolls ezininzi zisebenza ngokulandelelana. Ukuba iirolls ezitshintshiweyo ziyahluka ngobubanzi ukusuka kwiseti yokuqala, imimiselo ye-gap kunye nobudlelwane phakathi kwe-roll iyatshintsha, echaphazela zombini umphumo wenkqubo kunye nokusabalalisa umthwalo phakathi kwemiqulu. Oku kukunyamezela kwinqanaba lenkqubo, kungekhona ukunyamezela inxalenye enye, kwaye kufuneka kubhekiswe kwinkcazo yokuthenga.
Uburhabaxa bomphezulu ifuna ukuthelekiseka kwisicelo kunokunciphisa. Irhabaxa kakhulu kwaye umqulu uphawula umcu; umtyibilizi kakhulu kwaye ukutsalwa kwemicu kunokungonelanga kwiipasi ezithile. Kwimiqulu yomsebenzi ye-galvanizing line leveler, uluhlu olufanelekileyo luxhomekeke kubukhulu be-strip, i-tension, kunye nokuba umqulu ngumqulu womsebenzi okanye umqulu wokugcina.
I-Rollformer Shaft Rollers kunye ne-Forming Rolls: Umsebenzi ohlukeneyo, iiNqaku eziPhambili ezahlukeneyo
I-roller shaft rollers kunye ne-forming rollers zabelana ngegama elithi "roller" kunye namacandelo e-level, kodwa iimeko zabo zokusebenza kunye nezinto eziphambili kwiinkcazo ziyahlukana ngeendlela ezibalulekileyo.
Imiqulu yeleveli kwimigca yokufaka igalvanizing ilwa namaqondo obushushu aphakamileyo, ungcoliseko lwezinki, kunye nesidingo sokutyumza isikali ngelixa ugoba umcu. I-Rollformer eyenza imiqulu, ngokungafaniyo, i-milo strip ngokulandelelana kwezikhululo kubushushu be-ambient. Ezona ndlela zibalaseleyo zokungaphumeleli kwazo kukunxitywa kwe-abrasive ukusuka kumphezulu we-strip kunye nokudinwa okuvela kumjikelo wokugoba ophindaphindiweyo, hayi ukuthotywa kwe-thermal okanye ukubola kwe-zinc.
Lo mahluko utshintsha izinto kunye nogxininiso lonyango. Imiqulu yokwenza i-Rollformer iqhele ukusebenzisa i-GCr15 okanye i-AISI 1045 yentsimbi enokuqina kwi-HRC 58-62 kunye nokuzikhethela i-chrome enzima. I-Shafts kwizixhobo ezijikelezayo zihlala zichazwa njengentsimbi ye-40Cr okanye i-AISI 1045 enonyango olushushu, ebonisa imfuno yamandla e-torsional kunye nokumelana nokudinwa kunokumelana nokunxiba komphezulu kuphela.
Kwimiqulu ye-rollformer, ukuchaneka kweprofayili kunye nokuseta ukuhambelana kuthwala ubunzima obuninzi kunokukhethwa kwe-alloy ephakanyisiweyo yobushushu. I-rollerformer evelisa iprofayili engaphandle kokunyamezela ngenxa yokuba umqulu otshintshiweyo wenziwa ngomatshini ukuya kwi-contour eyahluke kancinane iya kuvelisa i-scrap kungakhathaliseki ukuba izinto eziphathekayo ziyakwazi ukunxiba. Ubalulo kufuneka lubeke phambili ukwakheka kweprofayile imilinganiselo kunye nobudlelwane be-dimensional phakathi kwemiqulu esitishini.
Ukutshatisa iSicombululo kwiNdlela yokuFaila: Isakhelo esiSebenzayo
Izinto eziphathekayo kunye nonyango olukhethiweyo olungasentla luba luncedo kuphela xa ludityaniswe nokusilela okubonakalayo kumgca. Esi sikhokelo silandelayo siququzelela inkqubo yesigqibo.
Ukuba umphezulu wokuqengqeleka ubonisa ukunxitywa, amanqaku, okanye ukupolisha: Imfuno ephambili bubulukhuni obuphezulu bomphezulu kunye nokuqina okwaneleyo. Qwalasela i-chromium ephezulu yekhabhoni eqinile okanye intsimbi yesixhobo sealloyi, qinisekisa ukuba ukuqina kwe-induction kufikelela kubunzulu obuxeliweyo, kwaye uphonononge umphezulu wokugqiba. Ukuba isikali okanye umba wangaphandle ngumthombo ogqabhukileyo, ukuphuculwa komcu wokucocwa okanye imeko ye-backup roll inokubaluleka njengokutshintsha imathiriyeli yokuqengqeleka.
Ukuba umphezulu womqulu ubonisa ukuchaphazeka, ukugoba, okanye ukuqhekeka komphezulu ongaphantsi komhlaba: Ubulukhuni bobuso bubodwa abuyi kusombulula oku. Jonga iziphene ezingaphantsi komhlaba kwizinto ezingenayo, uphonononge inkqubo yokuqina kobunzulu obugqithisileyo betyala okanye ubushushu obunganelanga, kwaye ujonge ukuba ingaba imithwalo yempembelelo engaqhelekanga (i-weld seams, iziphene zemilo yemicu) iqalisa umonakalo. Kusenokufuneka imathiriyeli engundoqo eyomeleleyo okanye ingcaciso ehlaziyiweyo yokuqina.
Ukuba ukusilela kuthwala ukuxhuzula okanye ukwehla koluhlu: Musa ukucacisa i-roller entsha de kube imeko yokuthwala, umthwalo we-axial, kunye nokulungelelaniswa kwendibano kuhlaziywe. Uncwadi lwe-tension leveler ichonga amandla e-axial kwi-end support bearings njengoyena nobangela wokuhla kweziganeko. Irola yokutshintsha efakwe kwizindlu ezingalungelelaniswanga kakuhle iya kusilela ngendlela efanayo neyokuqala. Amanyathelo okulungisa abandakanya ukuphononongwa kohlobo lokuthwala (i-thrust bearings apho kufanelekileyo), iinkqubo zendibano eziphuculweyo, kunye nohlengahlengiso lweparameter yenkqubo ukunciphisa ukulayisha kwe-axial.
Ukuba umtya wokutya okanye umgangatho womphezulu uyawohloka ngaphandle kokunxiba okucacileyo: Jonga ukuhambelana kwedayamitha ye-roll ngapha kweseti, ukujikeleza kunye nokuphuma kweerolls ezizimeleyo, kunye nemeko ye-backup rolls. Umqulu wejometri ongafezekanga kodwa unganxitywanga usenokuvelisa umcu ongamkelekanga.
Imibuzo Ebuzwa Rhoqo
I-level shaft roller yahluke njani kwi-roller shaft roller?
I-level shaft roller isebenza phantsi koxinzelelo olugobayo kwaye ihlala inyusa ubushushu kumgca womgangatho okanye woxinzelelo, kunye nokunxitywa okuqhutywa kukudibana komtya kunye nesikali. I-roller shaft roller iqhuba ukwenza imiqulu ebumba umcu kubushushu obuphakathi, ngokuguga okuqhutywa kukwenza imithwalo kunye noqhagamshelwano lweprofayile. Izinto eziphambili ngokubaluleka kunye neemfuno zokunyamezelana ziyahluka ngokufanelekileyo.
Ngaba i-roller eqhelekileyo ye-42CrMo4 inokuphuculwa ukwenzela inkonzo yomgca wokugalela?
I-42CrMo4 inokusebenza ngokwaneleyo kwezinye izicelo ezikumgangatho ophezulu, kodwa isengozini yokuqhekeka kwiindawo ezine-sulfide etyebileyo. Ukuphucula kwi-alloy esekelwe kwi-cobalt okanye isinyithi esine-alloyed ngaphezulu kunokufaneleka apho ukuqhutyelwa kwebhayisikile ye-thermal okanye ukubonakaliswa kweekhemikhali kuyinto. Isigqibo kufuneka sisekelwe kwimeko yenxalenye engaphumeleliyo, kungekhona kwibakala lezinto eziphathekayo kuphela.
Kukangaphi kufuneka kutshintshwe imiqulu yeleveli?
Akukho kuphumla kwelizwe lonke. Ukutshintshwa kuxhomekeke kumthamo we-strip, umgangatho we-strip, imathiriyeli yomqulu, kunye nokuba umqulu ngumqulu womsebenzi okanye umqulu ogciniweyo. Uvavanyo olusekwe kwimeko-ukulinganisa uburhabaxa bomphezulu, ukujonga ukuba sispalling, kunye nomgangatho wokubekwa kweliso komcu-uthembeke ngakumbi kunokutshintshwa okusekwe kwikhalenda.
Yintoni ebangela ukuba i-level roll iwe phantsi kwindlu yayo?
Ukuhla kwe-roll kwi-tension leveler goving units kulandwa ukuba kunxitywe kwiibheringi zenkxaso zokuphela komsebenzi phantsi kwe-axial force. Xa enye ithwala inxiba, i-bearing echasene nayo inokubalekela umkhono wayo wenkxaso, ivumela umqulu ukuba uhlukane. Ukukhetha ukuthwala, umgangatho wendibano, kunye nolawulo lomthwalo we-axial ziindawo ezifanelekileyo zokulungisa.
Ukuqukumbela: Ukufumanisa ukusilela phambi kokukhetha iMathiriyeli
I-roller eqinile ayisoloko iyi-roller engcono. Kwi-galvanizing line levelers, inxalenye engaphumeleli ingaba yi-roll surface, i-bearing interface, okanye ukulungelelaniswa kwendibano-kwaye ngamnye ufuna impendulo eyahlukileyo. Ukuphuculwa kwezinto kunye nokuqina komphezulu kunokwandisa ubomi ngokubonakalayo xa ukunxitywa kwe-abrasive yeyona ndlela ibalaseleyo. Abayi kulungisa indlu engafanelekanga okanye ingxaki yomthwalo we-axial otshabalalisa iibheringi.
Kwiindawo ezisecaleni ze-rollformer, izinto eziphambili zitshintshela ukuchaneka kweprofayili, ukuseta ukuhambelana, kunye nokumelana nokudinwa, kugxininiswa kancinci kwi-thermal kunye ne-corrosion resistance. Ukukhankanya zombini iindidi zokuqengqeleka ukusuka kwingqiqo yemathiriyeli efanayo kukungahoyi umsebenzi owahlukileyo owenziwa ngumntu ngamnye.
Eyona ndlela ithembekileyo kukuhlola inxalenye engaphumeleliyo, ukuchonga ukuba ukuguga, ukuhlambalaza, ukuthwala umonakalo, okanye i-geometric drift ngumba ophambili, kwaye ucacise izinto kunye nonyango ukujongana naloo ndlela. Ababoneleli abasiqondayo isicelo banokufaka isandla kolu xilongo; umyalelo wokuthenga wedwa awukwazi.
