Grate ibasa guru- rinotakura uye rinopinza mhepo rakaiswa pamatrolley emichina yegireti uye mabhandi ekugocha mumitsetse ye iron ore pelletizing. Hunhu hwayo hunonyatso gadzirisa kugadzikana kwekushanda, kushanda zvakanaka kwekugadzira uye mutengo wekugadzirisa weiyo yese mutsara wekugadzira. Kushanda pasi pemamiriro ezvinhu akaomarara anosanganisira tembiricha yakakwira, kuchovha bhasikoro kazhinji, kukukurwa kweguruva uye gasi gasi corrosion, ASTM A297 HH alloy gireti rave chigadzirwa chinonyanya kushandiswa mukugadzira zvirimwa pasi rese nekuda kwekuita kwavo kwakanakisa kwese. Ichi chinyorwa chinopa sumo yakazara kune iyi mhando ye grate, inovhara chimiro chayo, mabasa, zvinhu zvemukati, zvigadzirwa zvakanakira, mamiriro ekushandisa uye nhungamiro yekugadzirisa.
1. Mhedziso yeGrates yePelletizing Plants
1.1 Chigadzirwa Nzvimbo uye Mabasa
Iyo inozivikanwawo semapureti egireti kana mabhawa egireti, magireti ekudyara anounganidzwa mumapoka pamatrolley anofamba uye anoshanda mukati mekuomesa uye kupisa maitiro egirinhi iron ore pellets. Vanoita mabasa makuru matatu makuru:
Kutanga, kutakura mutoro. Iwo magireti anotsiga kutsigira mubhedha wegirinhi pellets uye kutsungirira kuenderera kumanikidza zvinhu uye kushanda vibration.
Chechipiri, kufefetedza uye kuchinjanisa kupisa. Vanoita kuti mweya unopisa upinde mumubhedha wepellet zvakaenzana kuti upedze kupera simba, kupisa uye kupisa kwepellets.
Chechitatu, kubvisa slag uye kutungamira kuyerera. Fine ore poda uye marara zvinoburitswa nenguva kudzivirira kuvharika kwemafungu emhepo uye kuve nechokwadi chekuyerera kwemhepo.
Sechikamu chepamusoro{{0} chinopfeka chinodyiwa pamutsetse wekugadzira, guva rakaremara, rakatsemuka, rakamira kana kuvharika zvakanyanyisa rinoita kuti pasave nemhepo inofefetera isina kuenzana, kushata kwemhando yepellet uye kunyange kudzimwa zvisina kurongwa. Naizvozvo, mhando yechigadzirwa uye kusarudzwa kwezvinhu zvakakosha zvakanyanya.
1.2 Operating Conditions
Grate inoshanda munzvimbo dzinoda zvakanyanya. Tembiricha inosiyana zvakanyanya: 200 digirii kusvika 400 madhigirii munzvimbo yakaderera-inoomesa tembiricha, 800 dhigirii kusvika 1000 madhigirii epakati-inopisa preheating zone, uye tembiricha yemuno inogona kusvika kusvika 1100 madhigirii nekuda kwemwaranzi inobva mukiln tail flue gasi. Kugara uchitanga-kumisa maoperation uye kugadzirisa zvinhu zvinokonzeresa kuchinja kwetembiricha uye kuvhunduka kwakanyanya. Zvichakadaro, magireti anogara achikuvadzwa ne iron ore powder, corrosion by sulfur{11}ine flue gas uye adhesion of high{12}}temperature slag. Kukuvadza kwakasanganiswa kwakawanda kunoisa zvinodiwa zvakanyanya pa grate yakakwirira-yekudzivirira tembiricha, kupisa kuvhunduka, kusapfeka uye kusaita ngura.
2. Material Properties yeASTM A297 HH Grates
Aya magireti akaumbwa nemazvo kubva ku25Cr-12Ni austenitic heat-resistant cast cast steel inoenderana neASTM A297 standard, alloy yekupisa yepamusoro yakagadziridzwa zvakanyanya kuitira mamiriro ekushanda mumaindasitiri. Zvimiro zvaro zvinozadzisa zvizere zvinodiwa zvekushanda zvekugadzirwa kwepellet.
2.1 Kuumbwa Kwemakemikari
Mushonga wekemikari unonyatso kutevedzera zvinodiwa (chikamu chezhinji): Carbon 0.20% ~ 0.50%, Chromium 24.00% ~ 28.00%, Nickel 11.00% ~ 14.00%. Manganese neSilicon hazvisi kupfuura 2.00% zvakateerana; tsvina inokuvadza Phosphorus neSulfur inongogumira kuIss pane kana kuenzana ne0.04%, Molybdenum Isingasviki kana kuenzana ne0.50%, Iron sechiyero. High Chromium content inopa zvakakwirira-tembiricha yeoxidation resistance uye corrosion resistance, ukuwo Nickel inodzikamisa chimiro chemetallographic uye inodzivirira kutadza kushanda nguva isati yakwana pasi pekudzokororwa kwetembiricha.
2.2 Mechanical uye Heat Resistance Properties
Chigadzirwa chacho chine maitiro akagadzikana emuchina: Kusimba Kusimba Kupfuura kana kuenzana ne743 MPa, Goho Simba Guru kupfuura kana kuenzana ne389 MPa, Elongation Yakakura kupfuura kana kuenzana ne11%, Brinell Kuoma Kwakaderera pane kana kuenzana ne324 HBW. Inogona kutakura-nguva refu kuremerwa kwezvinhu, kuramba kukanganiswa uye kudzivirira kuputsika.
Panyaya yekudzivirira kupisa, iyo inoenderera yakachengeteka inoshanda tembiricha inotangira pa1040 dhigirii kusvika 1100 dhigirii, uye inokwanisa kumira kwenguva pfupi yekupisa kwekushisa kusvika ku1150℃~1200 degree. The austenitic structure inonyatso dzivirira kukwira kwepamusoro-tembiricha uye kuneta kwemafuta, kuitira kuti magireti asapfave kana kushanduka patembiricha yepamusoro, kana kutsemuka mumamiriro ekupisa kana kutonhora.
3. Core Zvakanakira zveASTM A297 HH Grates
Zvichienzaniswa nemagireti akagadzirwa nesimbi yakajairika uye {{0}giredhi yekudziya yakaderera-simbi isingachinjiki, magireti eASTM A297 HH anoratidza zvakanakira mukushandisa mumunda, zvichiita kuti ive sarudzo inofarirwa neindasitiri.
Yakanakisa deformation kuramba
Chengetedza kusimba kwesimba kwakatenderedza 1000 dhigirii, isina kukotama, kudonha kana warpage. Matrolley anomhanya zvakanaka pasina kutadza kudhumhana.
Superior thermal shock resistance
Nekudzikama kwemafuta ekuchinjika kune kazhinji tembiricha shanduko pamitsetse yekugadzira. Hapana kutsemuka kana kutsemuka kunoitika panguva yekuwedzera kwekupisa uye kuputika, kuderedza kutsiva frequency uye kuve nechokwadi chekusingaperi kugadzirwa.
Wear resistance, anti{0}blocking and anti-corrosion performance
Dense alloy structure inoshingirira-kupwanya kwenguva refu ne iron ore poda uye kukora kwesarufa-ine flue gas. Iyo yepamusoro haina kujaira kune slag adhesion kana pellet inonamira, uye mapundu emhepo anogara asina kuvharwa, achicheka basa rekuchenesa nguva dzose.
Hupenyu hurefu hwebasa uye kuita kwemutengo wakakwira
Kuita kwayo kwese kuri nani pane zvakajairika -chromium cast iron nemagireti eASTM A297 HF, hupenyu hwesevhisi hwakawedzera ne30% kusvika 50%. Zvichienzaniswa nepamusoro-magireti eASTM A297 HK ane tembiricha yakakwira isingaite, chigadzirwa ichi chine mutengo uri pakati nepakati uye chinozadzisa zvizere zvinodikanwa zvenzvimbo dzekuomesa nekutanga kupisa, kuwana chiyero chakakwana pakati pemhando nemutengo.
4. Manufacturing Process uye Structural Design
4.1 Kukandira Technology
ASTM A297 HH pelletizing grates inogadzirwa nekukandira kwekudyara kwekudyara uye kukanda ganda mold. Iyo yekukanda inoratidzira yakaomeswa yemukati chimiro isina kukanganisa senge pores, jecha maburi uye shrinkage porosity, kuve nechokwadi chakafanana kusimba kwese. Zvese zvigadzirwa zvakapedzwa zvinowana mhinduro uye kuchembera kupisa kurapwa kudzoreredza kukanda kushushikana uye kudzikamisa metallographic chimiro, kuitira kuti uwedzere kusimba uye kurongeka kwechokwadi.
4.2 Magadzirirwo Emaitiro
Maprofiles akasarudzika anowanikwa kuti aenderane nemhando dzakasiyana dzepelletizing michina. Iyo yakasimba yekubatanidza chimiro inovimbisa yunifomu yekushushikana kugovera. Yakakwenenzverwa kufefetedza maburi uye magapu anoburitsa yakakwira kufefetera uye yakanaka yekubvisa slag kugona, kuyera kutakura mutoro uye kutenderera kwemhepo. Hurukuro chaihwo uye maburi ekusangana anovimbisa kushanda zvakanaka kwetrolley pasina kudhumhana kana kudonhedza zvinhu, zvinoenderana nemichina yegireti yekufambisa uye yekugocha mabhandi.
5. Sarudzo Yekutungamira yeSimilar Grates
Yakasiyana magirasi anozosarudzwa zvichienderana nenzvimbo tembiricha yemitsara yepelletizing:
ASTM A297 HF Grate: Yakanyanya kushanda tembiricha yakatenderedza 900 dhigirii nemutengo wakaderera. Inongoshanda kunzvimbo yakadzikira kumberi-inoomesa tembiricha uye haigone kushandiswa munzvimbo dziri pakati nepakati nepamusoro-inopisa preheat.
ASTM A297 HH Gireti: Kupisa-kusingachinji kusvika dhigirii re1100 nekuita kuri pakati nepakati uye kudhura kwakanyanya. Inokwana pese pese pekuomesa uye preheating uye inoshanda seyakakura-chinangwa chemhando yezvinomera.
ASTM A297 HK Grate: Iyo yakanyanya tembiricha kuramba inosvika 1200 dhigirii, asi ine mutengo wakakura wekutenga. Inogamuchirwa chete kune yakanyanya kukwirisa-nzvimbo dzekugocha uye haiwanzo shandiswa mumitsetse yekugadzira pelletizing.
6. Pa-saiti Mashandiro neMagadzirirwo Ezvakananga
Kushanda kwakakodzera uye kugadzirisa kwezuva nezuva kunogona kuwedzera hupenyu hwesevhisi yeASTM A297 HH grates:
Kudzora tembiricha yekushandisa zvakasimba. Dzivisa kushanda-kwenguva yakareba kupfuura 1100 degrees kuti udzikise kuchembera kwezvinhu.
Tevedzera nzira dzekutanga-kumira. Deredza kuvharika kwechimbichimbi uye kumanikidza kutonhora nekukurumidza kudzikisa kupisa kwekukuvara kwekukuvara.
Ita ongororo yemazuva ese. Tarisa pakutarisa deformation, kuputika uye kuvhara. Tsiva zvikamu zvakakuvadzwa nenguva kuti udzivise kukuvara kwechipiri kune zvikamu zviri pedyo.
Chengetedza ukobvu hwakakodzera hwemubhedha wepellet kudzivirira kuwandisa uye kupisa kwenzvimbo kunokonzerwa nekunyanya kukora zvinhu machira.
7. Mhedziso
Iine alloy material yakavimbika, sophisticated casting technology uye kushanda-condition{1}}oriented structural dhizaini, ASTM A297 HH magireti akagadziridzwa zvakakwana kunharaunda ine hukasha hwekupisa, kuchovha bhasikoro, mabrasion uye kukoromoka mumitsetse ye iron ore pelletizing. Inoratidzira yakagadzika mitoro inotakura, inobudirira mhepo, kutsemuka kukuru uye deformation kuramba uye hupenyu hurefu hwesevhisi, chigadzirwa zvakare chinozvirumbidza zvinoshamisa mutengo zvakanakira.
Sechikamu chakakosha chinodyiwa chemidziyo yepelletizing, ASTM A297 HH grate inova nechokwadi chekushanda, kugadzikana uye kuenderera mberi kwekushanda kwemitsara yekugadzira, uye zvinobudirira kudzikisa mari pakutenga zvikamu zvakasara, kugadzirisa kwekuvhara uye basa remaoko. Ndiyo inosarudzika yekufananidza chigadzirwa kune vanogadzira pellet.
