I-Crucible base block
Umkhiqizo ulungele iziko lezimboni, ukucwilisa, ukuncibilikisa futhi usebenza kuzo zonke izinhlobo zemikhiqizo. Emkhakheni wemboni yamakhemikhali, i-petroleum kanye nokuvikelwa kwemvelo ngezinhlobonhlobo zezicelo.
1) Ukuqina kokushaqeka kokushisa
2) ukumelana nokugqwala kwamakhemikhali
3) Intukuthelo ephezulu (kufika ku-1650 °
4) Ukumelana nokugqoka/ukugqwala/i-oxidation
5) Ukusebenza okuphezulu kwamandla emishini
6) Ukuhlanza noma ukufaka izindawo ezingaphansi ezinzima kakhulu
I-7) Isetshenziselwa ukugaya, ukuphahlaza, nokusika i-wire saw kanye nokuqhunyiswa kwe-abrasive
| Ukwakheka Kwamakhemikhali SIC >= | % | 90 | |
| I-Max.Service Temp. | ºC | 1400 | |
| I-Refractoriness >= | SK | 39 | |
| 2kg/cm2 Refractoriness ngaphansi komthwalo T2 >= | ºC | 1790 | |
| Impahla ye-Physics | I-modulus ye-Rupturt ekamelweni lokushisa >= | Kg/cm2 | 500 |
| I-Modulus Yokuphuka ku-1400ºC >= | Kg/cm2 | 550 | |
| Amandla acindezelayo >= | Kg/cm2 | 1300 | |
| Ukunwetshwa kwe-Thermal ku-1000ºC | % | 0.42-0.48 | |
| I-Porosity ebonakalayo | % | ≤20 | |
| Ukuminyana kwenqwaba | g/cm3 | 2.55-2.7 | |
| I-Thermal Conductivity ku-1000ºC | I-Kcal/m.hr.ºC | 13.5-14.5 | |
Incazelo:
I-crucible ibhodwe le-ceramic elisetshenziswa ukubamba insimbi ukuze inyibilike esithandweni. Lesi yikhwalithi ephezulu, i-crucible yebanga lezimboni esetshenziswa imboni yezohwebo.
Ekwenzayo:
I-crucible iyadingeka ukuze imelane namazinga okushisa adlulele okuhlangatshezwana nawo ekuncibilikeni kwezinsimbi. I-crucible material kufanele ibe nendawo yokuncibilika ephakeme kakhulu kunaleyo yensimbi encibilikayo futhi kufanele ibe namandla amahle ngisho nalapho kushisa okumhlophe.
Kungenzeka ukusebenzisa insimbi eyenziwe ekhaya ukuze kuncibilike izinsimbi ezifana ne-zinc ne-aluminium, ngoba lezi zinsimbi zincibilika ezingeni lokushisa elingaphansi kwensimbi. Kodwa-ke ukukalwa (ukuphehla) kwendawo engaphakathi yensimbi kuyinkinga. Lesi sikali singangcolisa ukuncibilika futhi sibe mncane izindonga ezibethelekayo ngokushesha. Izinsimbi zensimbi zizosebenza uma usaqala futhi ungakhathazeki ukubhekana nokukala.
Izinto ezivamile zokuphikisa ezisetshenziswa ekwakhiweni kwe-crucible yi-clay-graphite, ne-carbon bonded silicon-carbide. Lezi zinto zingakwazi ukumelana namazinga okushisa aphakeme kakhulu emsebenzini ojwayelekile we-Foundry. I-silicon carbide inenzuzo eyengeziwe yokuba yinto ehlala isikhathi eside kakhulu.
Izihluthulelo zethu ze-Clay Graphite Bilge Shape zilinganiselwe ku-2750 °F (1510 °C). Bazophatha i-zinc, i-aluminium, ithusi / ithusi, i-alloys yesiliva negolide. Umkhiqizi uthi zingasetshenziselwa insimbi ekhonjiwe. Kwenziwe e-United States!
Izimo Ezimbaxakayo:
I-crucible emise okwe-bilge (“B” Shape) imise okomphongolo wewayini. Ubukhulu be-"bilge" ububanzi be-crucible endaweni yayo ebanzi kakhulu. Uma bungekho ububanzi be-bilge obubonisiwe khona-ke ububanzi obungaphezulu buwububanzi obukhulu.
Umthetho wesithupha uthi i-# ye-"bilge" crucible inikeza amandla ayo okusebenza cishe ngamaphawundi e-aluminium. Ngethusi noma ithusi sebenzisa izikhathi ezi-3 kune-crucible #. Isibonelo i-crucible engu-#10 ingabamba cishe amaphawundi angu-10 e-aluminium namaphawundi angu-30 ethusi.
Iziphambano zethu zomumo othi “B” ngokuvamile zisetshenziswa abantu abazithandayo nabakhangisi abavamile. Lezi izinga eliphezulu, ezihlala isikhathi eside zebanga lezentengiso.
Hlola amathebula angezansi ukuze uthole usayizi ofanele womsebenzi wakho.
Isetshenziswa Kanjani:
Wonke ama-crucibles kufanele aphathwe ngodlawu olulingana kahle (ithuluzi lokuphakamisa). Ama-tongs angalungile angabangela umonakalo noma ukwehluleka okuphelele kwe-crucible ngesikhathi esibi kakhulu.
Idiski yekhadibhodi ingafakwa phakathi kwe-crucible kanye nesisekelo somlilo ngaphambi kokushisa. Lokhu kuzoshisa, kushiye ungqimba lwekhabhoni phakathi futhi kuvimbele i-crucible ukuthi inganamatheli phansi kwesithando somlilo. Ukumbozwa kwePlumbago (Carbon Black) kwenza into efanayo.
Kungcono ukusebenzisa i-crucible ehlukile kuhlobo ngalunye lwensimbi ukuze ugweme ukungcoliswa. Futhi qiniseka ukuthi uthulula ngokuphelele i-crucible ngemva kokusetshenziswa. Insimbi eshiywe ukuze iqine ku-crucible inganwebeka ekushisiseni kabusha futhi iyibhubhise.
Sicela uthukuthelise ama-crucible amasha noma lawo ebekade egcinwe. Shisisa i-crucible engenalutho amahora angu-2 ku-220 F (104 C). (Sebenzisa umoya owanele. Iziphambano ezintsha zizobhema njengoba i-glaze iqala.) Bese ushisa i-crucible engenalutho ekushiseni okubomvu. Vumela i-crucible ukuthi iphole ekamelweni lokushisa esithandweni ngaphambi kokusetshenziswa. Le nqubo kufanele ilandelwe ZONKE izimbambo ezintsha kanye nanoma yiziphi iziphamba okungenzeka ziye zaba ngaphansi kwezimo ezimanzi lapho zigcinwa.
Gcina zonke izitsha endaweni eyomile. Umswakama ungabangela ukuthi i-crucible iqhekeke ekushiseni. Uma igcinwe isikhathi eside kungcono ukuphinda ukufutheka.
I-silicon carbide crucibles iwuhlobo oluncane okungenzeka lumunce amanzi endaweni yokugcina futhi ngokuvamile ayidingi ukuthukutheliswa ngaphambi kokusetshenziswa. Kungumbono omuhle ukushisa i-crucible entsha ekushiseni okubomvu ngaphambi kokusetshenziswa kwayo kokuqala ukushayela futhi uqinise ama-coatings asefekthri nezibophezelo.
Impahla kufanele ifakwe ku-crucible ngokukhululeka KAKHULU. UNGALOKOTHI "upakishe" i-crucible, njengoba impahla izokhula ekushiseni futhi ingaqhekeka i-ceramic. Uma le nto isincibilikile ibe "isithende", layisha ngokucophelela izinto eziningi emgodleni ukuze zincibilike. (ISEXWAYISO: Uma YILUPHI umswakama okhona kwinto entsha kuzovela UKUPHUMULA kwesitimu). Nalapha futhi, musa ukupakisha ngokuqinile ensimbi. Qhubeka uphakela uketshezi ekuncibilikeni kuze kube yilapho inani elidingekayo selincibilikile.
ISEXWAYISO!!!: Izigxobo ziyingozi. Ukuncibilika kwensimbi ku-crucible kuyingozi. Ukuthela insimbi esikhunjeni kuyingozi. I-crucible ingase ihluleke ngaphandle kwesixwayiso. Ama-crucibles angaqukatha amaphutha afihlekile ezintweni zokwakha kanye nokukhiqiza okungaholela ekuhlulekeni, ukulimala kwempahla, ukulimala komuntu siqu, ukulimala kwababukele kanye nokulahlekelwa ukuphila.
Incazelo:
I-BCS A ibhlokhi yesisekelo iyisisekelo sezinga lokushisa eliphezulu elisetshenziselwa ukukhuphula i-crucible endaweni yokushisa yesithando somlilo.
Ekwenzayo:
I-base block ngokuvamile isetshenziswa esithandweni somlilo esibaselwe ngegesi ukuze kukhushulwe i-crucible phezulu ukuze ilangabi lokushisa lingaqhumeki ngokuqondile odongeni oluncane lwe-crucible. Uma ilangabi lokushisa livunyelwe ukuthi lishaye ngokuqondile i-crucible lingabangela ukuguguleka kodonga lwe-crucible ngaleyo ndlela ifinyeze impilo yayo. Indlela efanele yokuvimbela lokhu ukusebenzisa i-base block ukuze uphakamise i-crucible ngaphandle kwendawo yokushisa.
Ukuphakamisa i-crucible kuvumela futhi ukuthi ibe "endaweni yokushisa" yesithando somlilo. Nakuba ilangabi lomlilo lingena emzimbeni wesithando somlilo phansi indawo eshisa kakhulu isuka phakathi kuya phezulu. Kukulesi sifunda lapho izindonga zesithando somlilo zishiswa yigesi ejikelezayo ngokuphumelelayo. Ukuba nezinhlangothi ze-crucible kulesi sifunda kukhuthaza ukushisisa okungcono kakhulu okuvela kumfudlana wegesi onyakazayo kanye nemisebe yokushisa yezindonga zangaphakathi zesithando somlilo.
Isetshenziswa Kanjani:
I-base block kufanele ibe yinde ngokwanele ukuze ilangabi lokushisa liqondaniswe nangaphezulu kwebhulokhi. Kulungile uma ingaphezulu lebhulokhi liphakeme kune-inlet yokushisa futhi. Ongakufuni ukuthi ilangabi lishaye izinhlangothi ezincane ze-crucible. Kuyamukeleka futhi uma ilangabi lishaya ingxenye engezansi ejiyile ye-crucible njengoba le ngxenye ingasebenziseki ukugqoka kusuka kugesi.
I-Shandong Zhongpeng Special Ceramics Co., Ltd ingesinye sezixazululo ezintsha ze-silicon carbide zobumba eChina. I-ceramic yobuchwepheshe ye-SiC: Ubulukhuni be-Moh buyi-9 (ukuqina kwe-Moh entsha yi-13), enokumelana okuhle nokuguguleka nokugqwala, ukuhuzuka okuhle kakhulu – ukumelana ne-oxidation. Impilo yesevisi yomkhiqizo we-SiC iyinde izikhathi ezi-4 kuya kwezi-5 kune-alumina material engu-92%. I-MOR ye-RBSiC izikhathi ezi-5 kuye kweziyi-7 kune-SNBSC, ingasetshenziselwa izimo eziyinkimbinkimbi. Inqubo yekhotheshini iyashesha, ukulethwa kunjengoba kuthenjisiwe futhi ikhwalithi ingeyesibili. Sihlala siphikelela ekuphonseni inselelo imigomo yethu futhi sibuyisele izinhliziyo zethu emphakathini.
