Menene buƙatun buƙatun kayan aiki da zafin zafi don Rage Rage Gilashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙwara

       Rolls naSingle Tsaya Multi-Groove Rage Rolling Millana fuskantar sauye-sauyen lodin mirgina da rashin daidaituwar lalacewa ta hanyar wucewa da yawa. Wannan labarin ya ƙunshi kayan nadi da aka saba amfani da su, alamun aiki, ƙayyadaddun jiyya na zafi, da mahimman la'akari da kula da zafi don naɗaɗɗen fasfo da yawa.

       Tsaya-tsaye Multi-pass sizing sizing na niƙa yana aiki azaman ainihin kayan aiki don ƙirƙirar bututu. Yayin aiki, ana ci gaba da fallasa naɗaɗɗen nata zuwa matsi mai juyi, sauyawar nauyin tasiri, matsanancin zafi, da damuwa mai zafi na cyclic. Idan aka kwatanta da naɗaɗɗen fasfo guda ɗaya na al'ada, juzu'in nadi na juzu'i masu yawa yana ƙunshe da fastoci da yawa. Rarraba nauyin kaya mara daidaituwa tsakanin wucewa yana haifar da lalacewa cikin sauƙi, fashewa, fashewa da guntuwa. Saboda haka, yi zaɓi abu selection da zafi magani tsari kai tsaye ƙayyade yi sabis rayuwa, tube girma daidaito da kuma barga samar line aiki.

1. Yanayin Aiki Da Ya Shafi Zaɓin Material don Rolls Multi-Pass na Rage Girman Tsaya Guda Daya

       1. Ana sarrafa fasinja da yawa akan ganga nadi ɗaya. Matsanancin damuwa ya shahara a yankuna na gida saboda rashin daidaituwar kaya akan kowane fasinja.

       2. Ci gaba da lalacewa yana faruwa yayin mirgina. Farashin sawa ya bambanta sosai tsakanin faɗuwar ƙasa da kafadu, wanda ke haifar da gazawar wucewar mutum da wuri.

       3. Madadin yanayin zafi da sanyi yana haifar da gajiyawar zafi a ƙarƙashin yanayin rage zafi, wanda ke haifar da tsagewar hanyar sadarwa a saman nadi.

       4. Tasirin cizon lokaci-lokaci yana buƙatar matrix na nadi don mallaki mafi girman tauri da juriya fiye da na yau da kullun.

       Ganin yanayin aiki na sama, rage yawan fasfot ɗin nadi ba zai iya dogara ga babban taurin ba. Daidaitaccen haɗuwa da juriya na lalacewa, ƙarfin matrix, juriya na zafin zafi da ƙarfin tasiri ya zama dole.

2. Zaɓin gama gari don Rolls

2.1 Babban-Chromium Cast Rolls Iron Rolls (Zaɓi na Farko don Rage zafi)

       Babban simintin simintin gyare-gyaren chromium shine kayan da aka fi ɗauka don jujjuyawar bututu mai zafi mai tsauri guda ɗaya yana rage girman niƙa.

       Abũbuwan amfãni: Babban taurin carbide yana ba da kyakkyawan juriya da juriya da aikin zafi, wanda ya dace da matakan rage yawan zafin jiki.

       Ƙayyadaddun iyaka: Ƙarƙashin ƙarancin ƙarfi; spalling a saman fasfo na iya faruwa a ƙarƙashin nauyin tasiri mai nauyi.

       Aikace-aikacen: Rage zafi, matsakaicin mirgina nauyi da kuma yawan samar da bututu mai ci gaba.

2.2 Alloy Ductile Iron Rolls

       Abũbuwan amfãni: Daidaitaccen madaidaicin kaddarorin inji, mafi kyawun juriya mai tasiri da juriya mai zafi fiye da babban simintin ƙarfe na chromium, injina mai kyau.

       Iyakance: juriya na ƙasa kaɗan kaɗan idan aka kwatanta da babban simintin ƙarfe na chromium.

       Aikace-aikace: Yanayin jujjuyawa tare da tasiri mai nauyi da tsauraran buƙatun hana fasa-kwauri don rage raka'a masu yawa.

2.3 Karfe Karfe Rolls (Rage Rage sanyi / Babban Mahimman Aikace-aikace)

       Maki na gama gari: CrMo, CrNiMo jerin gami da ƙirƙira karfe.

       Abũbuwan amfãni: m matrix, high tauri, karfi tasiri juriya da kuma mai kyau taurin tare da isa regrinding izni.

       Iyakoki: Ƙarƙashin lalacewa juriya ga simintin ƙarfe da ƙimar samarwa mafi girma.

       Aikace-aikace: Cold tube sizing raguwa, high-madaidaici bakin ciki-banga tube samar da matsananci aiki yanayi tare da nauyi tasiri.

2.4 Ƙarfe Mai Girma Mai Girma (Aikace-aikacen Ƙarshen Ƙarshe)

       Ƙarfe mai saurin gudu yana nuna juriya na lalacewa da ja tauri tare da juriya na zafin zafi. Koyaya, sun zo tare da tsadar kayan abu da tsauraran buƙatun kulawa don hanyoyin magance zafi. Ana tura su cikin sauri, buƙatun buƙatun buƙatun rage samar da layin samarwa.

       Ƙa'idar Zaɓi: Ƙimar matsakaicin nauyin mirgina, zazzabi mai jujjuyawa da zurfin wucewa lokacin zabar juzu'i masu yawa. Za a inganta fihirisar tauri da kyau a kafadu masu wucewa inda damuwa ke ta'azzara don gujewa fashewa a sasanninta.

3. Abubuwan Buƙatun Fasaha na Jiyya na Heat don Rolls masu dacewa

       Makasudin jiyya mai zafi na birgima shine a cimma maƙallan aiki mai jure lalacewa tare da babban taurin tare da matrix mai tauri. Layer na saman yana ba da garantin juriya na fashe-fashe yayin da matrix ke hana karaya.

3.1 Tsari na Maganin zafi don Babban-Chromium Cast Iron Rolls

       Hanyar aiwatarwa: Simintin gyare-gyare → Taimakon Taimakon Matsala → Ƙaunar Machining → Ƙushewa → Zazzagewa

       Annealing: Kawar da saura danniya da inganta yankan na'ura.

       Quenching: Cikewar iska ko fashewar iska don tada taurin saman.

       Zazzabi: Ƙananan zafin jiki don cire danniya mai kashewa, daidaita ƙananan ƙwayoyin cuta da rage haɗarin fashewa.

       Taurin ƙayyadaddun bayanai: Mirgine taurin saman HSD 80 ~ 92 yayin da yake riƙe babban ƙarfi na abin yi.

3.2 Maganin zafi don Alloy Ductile Iron Rolls

       Hanyar tsari: Casting → Annealing → Rough Machining → Quenching + Tempering

       Maɓalli mai mahimmanci: Tsaya juzu'in pearlite a cikin matrix don haɓaka juriya na zafin zafi.

       Taurin iyaka: HSD 75-88. Idan aka kwatanta da babban simintin simintin gyare-gyare na chromium, yana samar da mafi girman tauri don ɗaukar nauyin tasiri na jujjuyawar wucewa da yawa.

3.3 Maganin zafi don Alloy Forged Karfe Rolls

       Hanyar tsari: Ƙirƙira → Ƙirƙirar Ƙarfafawa → Ƙarfafa Machining → Ƙullawa da zafi → Ƙarfafa shigar da saman saman → Ƙaunar zafin jiki

       Quenching da tempering: Tabbatar da babban ƙarfi da babban taurin mirgine matrix.

       Ƙunƙarar shigar da ƙasa: Kawai ƙara taurin saman aiki mai tsinke yayin kiyaye tauri a ainihin don guje wa ɓarna gabaɗaya.

       Taurin: Tsarin aiki HRC 48 ~ 58.

3.4 Maganin Zafi don Ƙarfe Mai Sauri

       Tsari: Babban zafin jiki quenching + yawan zafin jiki don cikakken hazo gami da carbides.

       Halaye: Taurin yana lalacewa sannu a hankali a yanayin zafi mai kyau (mai kyau taurin ja). Ana buƙatar kulawa mai mahimmanci na nakasar maganin zafi. Matsakaicin daidaito sarrafa tsagi masu wucewa da yawa yana da ƙalubale.

4. Abubuwan Kula da Zafi na Musamman don Rolls Multi-Pass Rolls guda ɗaya

1. Matsakaicin Mayar da hankali don Geometry mai-Pass

       Wucewa kafadu da kusurwoyin wucewa sune yankunan da ke da damuwa. Yayin maganin zafi, dole ne a sarrafa adadin dumama da sanyaya don hana fasa fashewa a sasanninta. Cikakken zafin jiki bayan quenching yana rage yawan damuwa. Wannan shine mafi mahimmancin bambance-bambance tsakanin naɗaɗɗen fasfo da yawa da nadi-wuri ɗaya.

2. Taurin Uniformity Control

       Ana sarrafa fasfo mai tsagi da yawa akan nadi guda. Maɓallin taurin saman aiki a duk fage bayan maganin zafi dole ne a kiyaye shi cikin iyakoki karɓaɓɓu. Taurin mara Uniform yana haifar da rashin daidaituwar lalacewa na wucewa daban-daban da kuma jurewar juriyar diamita na bututu.

3. Kula da nakasar Maganin zafi

       Multi-pass Rolls suna da tsayin ganga da tsagi da yawa. Nakasar maganin zafi yana shafar kai tsaye ta hanyar wucewa. Ana buƙatar haɓaka kayan aikin maganin zafi da hanyar sanyaya. Nakasar da ta wuce kima tana ƙara aikin sake niƙa na gaba.

4. Residual Stress dubawa

       Za a duba danniya na saura bayan maganin zafi. Babban damuwa na saura na iya haifar da faɗuwar gajiya wanda ke farawa daga sasanninta a ƙarƙashin madaidaicin nauyin juyi da kuma haifar da gazawar juzu'i.

5. Daidaita Tsakanin Kayan Rubutu, Maganin Zafi da Yanayin Kasawa

       Sawuwar fasinja cikin sauri: Rashin isassun taurin saman ko ƙarancin abun ciki na nadi.

       Cracks da crazing a pass sasanninta: Matsanancin saura damuwa bayan maganin zafi, rashin isasshen ƙarfi da lalacewar gajiya mai zafi.

       Chipping da spalling of pass: Brittle hard surface Layer tare da rashin isasshen matrix ko tsari na kashewa.

       Mahimmancin rashin daidaituwa tsakanin wucewa: Rashin daidaituwa bayan maganin zafi hade tare da rarraba kayan mirgina mara ma'ana.

6. Kammalawa

       Shirye-shiryen jiyya na kayan aiki da zafi don jujjuyawar ma'auni mai girman fasfo da yawa ba za a iya karbe su kai tsaye daga ma'auni na nadi-wuri ɗaya ba. Matsakaicin yawan damuwa da nauyin da bai dace ba wanda aka gabatar ta hanyar juriya mai tsauri da yawa yana buƙatar ma'auni tsakanin juriya da tauri a zaɓin kayan. Maganin zafi ya kamata ya mayar da hankali kan saura danniya a yankunan da ba su da ƙarfi, daidaituwar taurin kai da nakasar maganin zafi. Daidaitaccen daidaitawa na kayan aiki da hanyoyin kula da zafi yana ƙara zagayowar sabis na mirgine, yana daidaita diamita na bututu, ovality da sauran alamun da aka gama, kuma yana rage raguwa da farashin maye.