Grate babban kaya ne mai ɗaukar nauyi da kuma iskar iska da aka sanya akan trolleys na injunan grate masu tafiya da bel ɗin roasters a cikin layukan pelleting na ƙarfe. Ingancin sa kai tsaye yana ƙayyade kwanciyar hankali na aiki, haɓakar samarwa da ƙimar kulawar duk layin samarwa. Yin aiki a ƙarƙashin yanayi mai zafi ciki har da babban zafin jiki, hawan keke mai zafi mai zafi, ƙura da gurɓataccen iska, ASTM A297 HH grates sun zama samfuran da aka fi amfani da su a cikin pelletizing shuke-shuke a duk duniya saboda kyakkyawan aikinsu gabaɗaya. Wannan labarin yana ba da cikakkiyar gabatarwa ga irin wannan nau'in grate, yana rufe tsarinsa, ayyuka, kayan kayan aiki, fa'idodin samfurin, yanayin aikace-aikacen da jagororin kulawa.
1. Bayanin Grates don Tsire-tsire na Pelletizing
1.1 Matsayin samfur da Ayyuka
Har ila yau, aka sani da grate faranti ko grate sanduna, pelletizing shuka grates ana taru a kungiyoyi a kan motsi trolleys da kuma aiki a ko'ina cikin bushewa da preheating tafiyar matakai na koren ƙarfe tama pellets. Suna yin manyan ayyuka guda uku:
Na farko, ɗaukar kaya. Grates a hankali suna goyan bayan gadon koren pellets kuma suna jure ci gaba da matsa lamba na kayan aiki da girgizar aiki.
Na biyu, samun iska da musayar zafi. Suna ba da damar iska mai zafi don shiga cikin gadon pellet daidai da lokacin don kammala bushewa, dumama da dumama pellets.
Na uku, kawar da slag da jagorar kwarara. Ana fitar da foda mai kyau da tarkace akan lokaci don hana toshe hanyoyin samun iska da tabbatar da kwararar iska.
A matsayin babban ɓangaren da ake amfani da shi - akan layin samarwa, gurɓataccen gurɓataccen abu, fashe, ƙulle ko ƙulle mai tsanani zai haifar da rashin daidaituwar iska, ƙarancin ingancin pellet har ma da rufewar da ba a shirya ba. Saboda haka, ingancin samfur da zaɓin kayan abu suna da matuƙar mahimmanci.
1.2 Yanayin Aiki
Grates suna aiki a cikin mahalli masu matuƙar buƙata. Yanayin zafin jiki ya bambanta sosai: 200 digiri zuwa digiri 400 a cikin ƙananan -zazzabi yankin bushewa, 800 digiri zuwa 1000 digiri a cikin matsakaici{6}zazzabi na zafin jiki, kuma zafin gida na iya kaiwa zuwa digiri 1100 saboda radiation daga iskar hayaƙin wutsiya. Farawa akai-akai{9}}dakatar da ayyuka da gyare-gyaren kaya suna haifar da canje-canjen yanayin zafi da tsananin girgizar zafi. A halin yanzu, kullun ana fuskantar ƙazanta da foda ta ƙarfe, lalata ta sulfur{11}}mai ɗauke da hayaƙin hayaki da mannewa mai tsayin zafi. Haɗaɗɗen lalacewa da yawa sun saita manyan buƙatu akan maɗaukakin maɗaukakin maɗaukaki, juriya na zafi, juriya da lalata.
2. Abubuwan Kaya na ASTM A297 HH Grates
Wannan jerin gwanon simintin simintin gyare-gyare ne daga 25Cr{2}}12Ni austenitic heat{4}} karfen simintin gyare-gyaren da ya dace da ma'aunin ASTM A297, gawa mai zafi mai zafi wanda aka ƙera musamman don matsanancin yanayin aiki na masana'antu. Kaddarorinsa sun cika cikakkiyar buƙatun aiki na samar da pellet.
2.1 Haɗin Sinadari
Abubuwan da ke tattare da sinadarai suna bin daidaitattun buƙatun (jari mai yawa): Carbon 0.20% ~ 0.50%, Chromium 24.00% ~ 28.00%, Nickel 11.00% ~ 14.00%. Manganese da Silicon ba su wuce 2.00% bi da bi; Abubuwan ƙazanta masu cutarwa Phosphorus da Sulfur suna iyakance zuwa Kasa da ko daidai da 0.04%, Molybdenum Kasa ko daidai da 0.50%, tare da Iron a matsayin ma'auni. Babban abun ciki na Chromium yana ba da ƙwaƙƙwaran ƙwaƙƙwaran juriya na iskar oxygen da juriyar lalata, yayin da nickel yana daidaita tsarin ƙarfe kuma yana hana gazawar da wuri a ƙarƙashin maimaita canjin yanayin zafi.
2.2 Abubuwan Juriya na Injini da Zafi
Samfurin yana da ingantaccen aikin injiniya: Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙarfin Sama fiye da ko daidai da 389 MPa, Ƙarfin Ƙarfi Mafi Girma ko daidai da 11%, Brinell Hardness Kasa da 324 HBW. Yana iya ɗaukar dogon lokaci{5} lodin kayan abu, tsayayya da tasiri kuma ya guje wa karaya.
A cikin sharuddan zafi juriya, da ci gaba da aminci aiki zafin jiki jeri daga 1040 digiri zuwa 1100 digiri, kuma zai iya jure wucin gadi high zafin jiki tasiri har zuwa 1150 digiri ~ 1200 digiri. Tsarin austenitic yana jure yanayin zafi mai girma da gajiyar zafi, don haka grates ba zai yi laushi ko lalacewa a yanayin zafi ba, ko fashe a ƙarƙashin yanayin zafi da sanyi.
3. Babban Amfanin ASTM A297 HH Grates
Idan aka kwatanta da grates da aka yi da baƙin ƙarfe na yau da kullun da ƙananan ƙarfe - zafi mai ɗorewa{1}}, ASTM A297 HH grates suna nuna fa'idodi masu mahimmanci a aikace-aikacen filin, yana mai da su zaɓin da aka fi so don masana'antar.
Kyakkyawan juriya na lalata
Kula da tsayayyen ƙarfin tsari a kusa da digiri 1000, ba tare da lankwasa ba, rugujewa ko yaƙe-yaƙe. trolleys ɗin suna tafiya lafiya lau ba tare da cinkoso ba.
Mafi girman juriya girgiza zafi
Tare da kyakkyawan kwanciyar hankali na thermal don daidaitawa ga canje-canjen zazzabi akai-akai akan layin samarwa. Babu tsagewa ko karaya da ke faruwa a lokacin haɓakawar zafi da ƙanƙancewa, rage mitar sauyawa da tabbatar da ci gaba da samarwa.
Sa juriya, hana{0}} toshewa da aikin lalata
Tsarin gami mai ɗorewa yana tsayayya da dogon lokaci{0} abrasion ta ƙarfe tama foda da lalata sulfur{1}}mai ɗauke da hayaƙi. Fuskar ba ta da saurin mannewa ko mannewa pellet, kuma gibin samun iska yana tsayawa ba tare da toshewa ba, yana yanke aikin tsaftacewa na yau da kullun.
Rayuwar sabis mai tsayi da babban aiki mai tsada
Ayyukansa gabaɗaya ya fi na yau da kullun - chromium cast iron da ASTM A297 HF grates, tare da haɓaka rayuwar sabis da kashi 30% zuwa 50%. Idan aka kwatanta da tsadar ASTM A297 HK mai girma - tare da mafi girman juriya na zafin jiki, wannan samfurin yana da matsakaicin farashi kuma yana cika cikakkun buƙatun buƙatun manyan bushewa da wuraren da ake dumama dumama, samun daidaito mafi kyau tsakanin inganci da farashi.
4. Tsarin Samfura da Tsarin Tsarin
4.1 Fasahar Casting
ASTM A297 HH pelletizing grates ana ƙera su ta daidaitaccen simintin saka hannun jari da simintin ƙirar harsashi. Simintin gyare-gyaren ya ƙunshi tsari mai yawa na ciki ba tare da lahani ba kamar pores, ramukan yashi da ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙarfi, yana tabbatar da ƙarfi gaba ɗaya. Duk samfuran da aka gama suna jurewa maganin zafi da tsufa don kawar da danniya gaba ɗaya da daidaita tsarin ƙarfe, don haɓaka tsayin daka da daidaiton girman gaske.
4.2 Tsarin Tsari
Ana samun bayanan martaba na musamman don dacewa da nau'ikan kayan aikin pelletizing daban-daban. Tsarin haɗin kai mai ƙarfi yana tabbatar da rarraba damuwa iri ɗaya. Ingantattun ramukan samun iska da ramuka suna isar da ingantacciyar iskar iska da kyakkyawan ƙarfin cire slag, daidaita ɗaukar nauyi da kewayar iska. Madaidaicin girman gabaɗaya da madaidaitan gibin taro suna ba da garantin aikin trolley mai santsi ba tare da cunkoso ko yoyon abu ba, masu jituwa tare da injunan tafiye-tafiye na yau da kullun da bel ɗin roasters.
5. Jagoran Zaɓi don Makamantan Grates
Za a zaɓi grates daban-daban bisa ga yankunan zafin jiki na layin pelletizing:
ASTM A297 HF Grate: Matsakaicin zafin aiki a kusa da digiri 900 tare da ƙarancin farashi. Yana aiki ne kawai ga ƙananan ƙananan gaba{3}}zazzabi yankin bushewa kuma ba za a iya amfani da shi a matsakaici da babba{4}}sassan zafin zafin jiki ba.
ASTM A297 HH Grate: Heat{1}} mai jurewa har zuwa digiri 1100 tare da daidaiton aiki da babban aiki mai tsada. Ya dace da duk ainihin bushewa da wuraren zafin jiki kuma yana aiki azaman babban abin ƙira na gama gari{4}}samfurin maƙasudin shuke-shuke.
ASTM A297 HK Grate: Mafi girman juriya na zafin jiki har zuwa digiri 1200, duk da haka tare da tsadar siyayya. Ana ɗauka ne kawai don matsananciyar matsananciyar gasasshen zazzaɓi{3} kuma ba kasafai ake amfani da shi a cikin layin samarwa na pelletizing na al'ada ba.
6. Akan -Aikin Yanar Gizo da Ƙayyadaddun Kulawa
Yin aiki da kyau da kulawa na yau da kullun na iya ƙara haɓaka rayuwar sabis na ASTM A297 HH grates:
Sarrafa zafin aiki sosai. Guji aiki na dogon lokaci{1} sama da digiri 1100 don rage tsufa na abu.
Bi daidaitattun matakan farawa{0}}. Rage rufewar gaggawa da tilasta saurin sanyaya don rage lalacewar girgizar zafi.
Gudanar da bincike na yau da kullun. Mayar da hankali kan duba nakasawa, fasa da toshewa. Sauya ɓangarorin da suka lalace akan lokaci don gujewa lalacewa ta biyu ga abubuwan da ke kusa.
Kula da kauri mai dacewa na gadon pellet don hana yin nauyi da zazzaɓi na gida wanda ya haifar da kauri mai kauri da yawa.
7. Kammalawa
Tare da ingantaccen kayan gami, fasahar simintin simintin ƙwaƙƙwara da aiki{0}} yanayin{1} tsari mai dacewa, ASTM A297 HH grates sun dace da yanayin matsanancin zafin jiki, hawan keke, abrasion da lalata a cikin layin pelletizing ƙarfe. Yana nuna barga mai ɗaukar nauyi, ingantacciyar iska, babban tsaga da juriya na lalacewa da tsawon rayuwar sabis, samfurin kuma yana alfahari da fa'idodin tsada.
ASTM A297 HH grate a matsayin babban ɓangaren da ake amfani da shi don kayan aikin pelletizing, yana tabbatar da ingantaccen, kwanciyar hankali da ci gaba da aiki na layin samarwa, kuma yana rage kashe kuɗi akan siyan kayan gyara, kiyayewar rufewa da aikin hannu. Ya fi dacewa da samfurin da ya dace don masana'antun pellet.
