Yiziphi izimfuneko zokwelashwa nokushisa kweSingle Stand Multi-Groove Reducing Rolling Mill

       Imiqulu yeI-I-Single Stand Multi-Groove Reducing Rolling Millzibhekene nemithwalo eshintshanayo kanye nokuguga okungalingani kuwo wonke amaphasi amaningi. Lesi sihloko sihlanganisa izinto ezisetshenziswa kakhulu zokugoqa, izinkomba zokusebenza, ukucaciswa kokwelashwa kokushisa, nokucatshangelwa okubalulekile kokwelashwa kokushisa kwamaroli amaphasi amaningi.

       Isigayo sokunciphisa usayizi wamaphasi amaningi esitendi esisodwa sisebenza njengesisetshenziswa esibalulekile sokwenza amashubhu. Ngesikhathi sokusebenza, amaroli ayo ahlala evezwa kungcindezi egingqikayo, imithwalo yomthelela eshintshanayo, ukungqubuzana kwezinga lokushisa eliphezulu, kanye ne-cyclic thermal stress. Uma kuqhathaniswa namaroli avamile we-single-pass, umzimba we-roll yama-multi-pass rolls uqukethe amaphasi amaningi anemigqa. Ukusatshalaliswa komthwalo okungalingani phakathi kwamaphasi kubangela kalula ukuguga kwendawo, ukubola, ukuqhekeka nokuqhekeka. Ngakho-ke, ukukhethwa kwempahla ye-roll kanye nenqubo yokwelapha ukushisa kunquma ngokuqondile impilo yesevisi ye-roll, ukunemba kwe-tube dimensional kanye nokusebenza komugqa wokukhiqiza ozinzile.

1. Izimo Zokusebenza Ezithinta Ukukhethwa Kwezinto Zokudluliswa Kwama-Multi-Pass Omshini Wokunciphisa Usayizi Wesitendi Esizodwa

       1. Amaphasi amaningi anemigqa enziwe ngomshini emgqonyeni owodwa. Ukugxiliswa kwengcindezi kugqamile ezifundeni zasendaweni ngenxa yomthwalo ongahambisani kuphasi ngayinye.

       2. Ukuguga okuqhubekayo kwenzeka ngesikhathi sokugoqa. Amazinga okugqokwa ahluka kakhulu phakathi kwamaphasi namahlombe okudlula, okuholela ekuhlulekeni ngaphambi kwesikhathi kokuphasa ngakunye.

       3. Ukushintshashintsha kwezimo ezishisayo nezibandayo kubangela ukukhathala okushisayo ngaphansi kwezimo ezishisayo zokunciphisa, okuvame ukudala ukuqhekeka kwenethiwekhi ezindaweni eziguquguqukayo.

       4. Umthelela wokuluma ngezikhathi ezithile udinga i-roll matrix ukuze ibe nokuqina okuphezulu kanye nokumelana ne-spalling kunamaroli ajwayelekile.

       Uma kubhekwa izimo zokusebenza ezingenhla, amaroli okunciphisa amaphasi amaningi awakwazi ukuthembela kuphela ebukhuni obuphezulu. Inhlanganisela elinganiselayo yokumelana nokugqokwa kwendawo, amandla e-matrix, ukumelana nokukhathala okushisayo kanye nokuqina komthelela kuyisibopho.

2. Ukukhethwa Kwezinto Ezivamile Zemiqulu

2.1 I-High-Chromium Cast Iron Rolls (Inketho Eyinhloko Yokunciphisa Okushisayo)

       I-high-chromium cast iron iyinto eyamukelwa kabanzi kakhulu yamaroli we-single-stand multi-pass hot hot mill yokunciphisa izigayo.

       Izinzuzo: Ama-carbides anokuqina okuphezulu aletha ukumelana nokugqokwa okuhle kakhulu kanye nokusebenza kokugqoka okushisayo, afanele izinqubo zokunciphisa izinga lokushisa eliphezulu.

       Imikhawulo: Ukuqina okuphansi ngokuqhathaniswa; ukudabula ezindaweni zokudlula kungenzeka ngaphansi kwemithwalo esindayo.

       Isicelo: Ukuncishiswa okushisayo, umthwalo wokugoqa ophakathi kanye nokukhiqizwa kwamashubhu amaningi okuqhubekayo.

2.2 I-alloy Ductile Iron Rolls

       Izinzuzo: Izakhiwo zemishini ezibanzi ezilinganiselayo, ukumelana nomthelela ongcono kanye nokumelana nokuqhekeka okushisayo kune-high-chromium cast iron, machinability enhle.

       Imikhawulo: Ukumelana nokugqokwa okuphansi kancane uma kuqhathaniswa nensimbi ekhonjiwe ye-chromium ephezulu.

       Isicelo: Izimo eziginqikayo ezinomthelela onzima kanye nezidingo eziqinile zokulwa nokuqhekeka zamayunithi okunciphisa amaphasi amaningi.

2.3 Amaroli Ensimbi Efojiwe (Ukunciphisa Ukubanda / Izicelo Ezinemba Kakhulu)

       Amabanga ajwayelekile: CrMo, CrNiMo series alloy forged steel.

       Izinzuzo: I-matrix eminyene, ukuqina okuphezulu, ukumelana nomthelela onamandla nokuqina okuhle okunemvume eyanele yokugaya.

       Imikhawulo: Ukumelana nokugqoka okuphansi kumamaki ensimbi kanye nezindleko zokukhiqiza eziphakeme.

       Isicelo: Ukuncishiswa kosayizi wamashubhu abandayo, ukukhiqizwa kwamashubhu anezindonga ezincane ezinembayo okuphezulu kanye nezimo zokusebenza ezinzima ezinomthelela onzima.

2.4 Amaroli Ensimbi Esivinini Esiphezulu (Izicelo Ezisezingeni Eliphezulu)

       Amaroli ensimbi anesivinini esikhulu afaka ukumelana nokugqokwa okuvelele kanye nobulukhuni obubomvu obunokumelana nokukhathala okuphakeme okushisayo. Kodwa-ke, ziza nezindleko eziphezulu zempahla kanye nezidingo eziqinile zokulawula izinqubo zokwelashwa kokushisa. Atshalwe emigqeni yokukhiqiza enesivinini esikhulu, edingeka kakhulu.

       Isimiso Sokukhetha: Linganisa ubukhulu bomthwalo oginqikayo, izinga lokushisa eligoqayo kanye nokujula kokudlula lapho ukhetha amaroli anamaphasi amaningi. Izinkomba zokuqina zizothuthukiswa kahle emahlombe okudlula lapho ingcindezi igxila khona ukugwema ukuqhekeka emakhoneni okudlula.

3. Izidingo Zobuchwepheshe Zokwelashwa Kokushisa Kwemiqulu Ehambelanayo

       Inhloso yokwelashwa kokushisa kwe-roll iwukuthola ungqimba olusebenzayo olungagugi olunokuqina okuphezulu kanye ne-matrix eqinile. Isendlalelo esingaphezulu siqinisekisa ukumelana nokuguga kwamaphasi agqinsile kuyilapho i-matrix ivimbela ukuphuka kweroll.

3.1 Inqubo Yokwelapha Ukushisa Ye-High-Chromium Cast Iron Rolls

       Umzila wenqubo: Ukusakaza → Ukuhlanganisa Ukunciphisa Ingcindezi → Ukumashini Okuqinile → Ukucisha → Ukushisa

       I-Annealing: Susa ingcindezi eyinsalela yokuphonsa futhi uthuthukise ubuciko bokusika.

       Ukucisha: Ukucisha umoya noma ukucisha umoya ukuze kukhuphule ubulukhuni bobuso.

       I-Tempering: Izinga lokushisa eliphansi ukuze lisuse ukucindezelwa okucishayo, ukuzinzisa i-microstructure kanye nokunciphisa ingozi yokuqhekeka.

       Ukucaciswa kokuqina: Ukuqina kobuso be-roll HSD 80~92 ngenkathi ugcina ukuqina okuphezulu kwe-roll core.

3.2 Ukwelashwa Kokushisa Kwe-Alloy Ductile Iron Rolls

       Umzila wenqubo: Ukusakaza → Ukunamathisela → Ukukhanda Okuqinile → Ukucisha + Ukushisa

       Ukulawula okubalulekile: Misa ingxenyena ye-pearlite ku-matrix ukuze uthuthukise ukumelana nokukhathala okushisayo.

       Ibanga lokuqina: HSD 75~88. Uma kuqhathaniswa ne-high-chromium cast iron, ihlinzeka ngemajini yokuqina okukhulu ukuze ikwazi ukumelana nemithwalo yomthelela eshintshanayo yokugingqika kwamaphasi amaningi.

3.3 Ukwelashwa Kokushisa Kweziroli Zensimbi Ezenziwa Ingxubevange

       Umzila wenqubo: Ukuqamba → Ukufoja Okunamathiselwe → Ukushisisa Okuqinile → Ukucisha Nokushisa → Ukwenziwa Kuqina Kokungeniswa Emkhathini Kweroli → Ukushisa Kwezinga Eliphansi

       Ukucisha kanye nokushisa: Qinisekisa amandla aphezulu kanye nokuqina okuphezulu kwe-roll matrix.

       Ukuqina kwe-Induction surface: Khulisa kuphela ubulukhuni bendawo yokusebenza egobile ngenkathi ugcina ukuqina kumnyombo ukuze ugweme ukufiphala okuphelele.

       Ukuqina: Indawo yokusebenza i-HRC 48~58.

3.4 Ukwelashwa Kokushisa Kwezinsimbi Zensimbi Ezinesivinini Esikhulu

       Inqubo: Ukucisha izinga lokushisa eliphezulu + ukufudumala okuningi ukuze kugcwale ngokugcwele ama-alloy carbides.

       Izici: Ukuqina konakala kancane emazingeni okushisa aphezulu (ukuqina okuhle okubomvu). Ukulawulwa okuqinile kokuguqulwa kokwelashwa kokushisa kuyadingeka. Ukulawula ukunemba kwe-Dimensional of multi-pass grooves kuyinselele.

4. Ukucatshangelwa Okukhethekile Kokwelashwa Kokushisa Kwemigqa Eye-Single-Stand Multi-Pass

1. Ukulawula Ukugxila Kwengcindezi Yejiyomethri Ye-Multi-Pass

       Amahlombe okudlula namakhona okudlula yizindawo ezigxile ekucindezelekeni. Ngesikhathi sokwelashwa kokushisa, amazinga okushisa nawokupholisa kufanele alawulwe ukuze kuvinjelwe imifantu yokucisha emakhoneni okudlula. Ukuthukuthela okuphelele ngemva kokucisha kunciphisa ukucindezeleka okusalayo. Lona umehluko obaluleke kakhulu phakathi kwama-multi-pass rolls nama-single-pass rolls.

2. Ukuqina Kokufana Kokulawula

       Amaphasi amaningi ane-grooved akhiwe ngomshini owodwa. Ukuchezuka kokuqina kwezindawo zokusebenza kuwo wonke amaphasi ngemva kokwelashwa kokushisa kufanele kugcinwe ngaphakathi kwemikhawulo eyamukelekayo. Ukuqina okungajwayelekile kuholela ekugugekeni okungahambisani kwamaphasi ahlukene kanye nokuguquguquka kokubekezelelana kobubanzi beshubhu yangaphandle.

3. Ukulawula Ukushintsha Kokwelashwa Kokushisa

       Ama-Multi-pass roll afaka umgqomo omude nemisele eminingi. Ukuguqulwa kokwelashwa kokushisa kuthinta ngokuqondile ukugxila kwamaphasi. Kudingeka ukuthuthukiswa komshini wokwelapha ukushisa kanye nendlela yokupholisa. Ukuwohloka okwedlulele kwandisa umthwalo wokugaya kabusha okulandelayo.

4. Ukuhlola Ukucindezeleka Okusele

       Ukucindezeleka okusele kuzohlolwa ngemva kokwelashwa kokushisa. Ingcindezi ephezulu eyinsalela ingase iqalise ukuqhekeka kokukhathala kusukela emakhoneni okudlula ngaphansi kwemithwalo eginqikayo egxilile futhi kubangele ukwehluleka kweroll ngaphambi kwesikhathi.

5. Ukuhlobana Phakathi Kwezinto Zokugoqa, Ukwelashwa Kokushisa kanye Nezindlela Zokwehluleka

       Ukugqokwa kwendawo edlula ngokushesha: Ubulukhuni obunganele bomhlaba noma okuqukethwe kwe-carbide ephansi kwezinto ezigoqayo.

       Imifantu nokuhlanya emakhoneni okudlula: Ingcindezi eyinsalela eyeqile ngemuva kokwelashwa kokushisa, ukuqina obanele kanye nokulimala kokukhathala okushisayo.

       Ukuchopha kanye nokusaphazeka kwendawo yokudlula: Isendlalelo sendawo eqinile ebhibhayo enokuqina okunganele kwe-matrix noma inqubo yokucisha engafanele.

       Umehluko omkhulu phakathi kwamaphasi: Ukuqina okungalingani ngemva kokwelashwa kokushisa kuhlanganiswe nokusabalalisa umthwalo oginqikayo okungenangqondo.

6. Isiphetho

       Izikimu zokwelashwa okubalulekile nokushisa kwamaroli wemishini yokunciphisa usayizi wamapasi amaningi wesitendi esisodwa azikwazi ukwamukelwa ngokuqondile kusukela kumazinga amaroli ephasi elilodwa. Ukugxiliswa kwengcindezi nomthwalo ongalingani owethulwa yi-multi-pass grooved geometry kudinga ibhalansi phakathi kokumelana nokugqokwa nokuqina ekukhetheni izinto. Ukwelashwa kokushisa kufanele kugxile ekucindezelekeni okuyinsalela ezindaweni ezinemigodi, ukufana kokuqina kanye nokuguqulwa kokwelashwa kokushisa. Ukumatanisa kahle izinqubo zokwelashwa kwempahla nokushisa kunweba umjikelezo wesevisi ye-roll, kuzinzisa ububanzi beshubhu elingaphandle, i-ovality nezinye izinkomba eziqediwe, futhi kunciphisa isikhathi sokuphumula kanye nezindleko zokushintshwa kwe-roll.