Ukusetshenziswa kwe-high-purity graphite: I-graphite powder.

Ukusetshenziswa kwe-high-purity graphite: I-graphite powder. Kungani i-graphite powder ithandwa kangaka? Imakethe yasekhaya yama-graphite heater kulindeleke ukuthi ibe yethembisayo. Kungani izifudumezi ze-graphite ziya zithandwa kakhulu phakathi kwabantu? Eqinisweni, isizathu esenza ukuba idume kakhulu phakathi kwabantu ayinakuhlukaniswa nezinzuzo zayo. Manje, ake sibheke izinzuzo ezithile ze-heater graphite ndawonye!

1. Iqeda ngokuphelele i-oxidation kanye ne-decarburization endaweni yokusebenza ngesikhathi senqubo yokushisa, futhi ingathola indawo ehlanzekile ngaphandle kwesendlalelo esiwohlokayo. Lokhu kubaluleke kakhulu ekuthuthukiseni ukusebenza kokusika kulawo mathuluzi agaya uhlangothi olulodwa kuphela ngesikhathi sokugaya (njengama-twist drill lapho ungqimba lwe-decarburization endaweni ye-groove ivezwe ngokuqondile onqenqemeni lokusika ngemva kokugaya).
2. Ayibangeli ukungcoliswa kwemvelo futhi ayidingi ukwelashwa kwemfucuza emithathu.

3. Inezinga eliphezulu le-mechatronics. Ngokusekelwe ekuthuthukisweni kokulinganisa izinga lokushisa nokunemba kokulawula, ukunyakaza kwama-workpieces, ukulungiswa kwengcindezi yomoya, ukulungiswa kwamandla, njll. konke kungahlelwa kusengaphambili futhi kusethwe, futhi ukucisha nokushisa kungenziwa isinyathelo ngesinyathelo.

4. Ukusetshenziswa kwamandla kuphansi kakhulu kuneziko lokugeza usawoti. Igumbi lokufudumala lesimanje elithuthukisiwe le-graphite heater lifakwe izindonga ze-insulation kanye nezithiyo ezenziwe ngezinto zokufakelwa kwekhwalithi ephezulu, ezingagxilisa kakhulu amandla okushisa kagesi ngaphakathi kwegumbi lokushisa, ukufeza imiphumela emangalisayo yokonga amandla.

5. Ukunemba kokulinganisa izinga lokushisa kwesithando somlilo nokuqapha kuye kwathuthukiswa kakhulu. Inani lenkomba le-thermocouple lifinyelela ± izinga lokushisa lesithando somlilo1.5°c. Kodwa-ke, umehluko wokushisa phakathi kwezingxenye ezihlukene zenani elikhulu lama-workpieces esithandweni mkhulu kakhulu. Uma kwamukelwa ukusakazwa okuphoqelekile kwegesi engavamile, umehluko wezinga lokushisa usengalawuleka phakathi kuka-±5°c.

I-Degassing yinto yokuhwamuka kancane kwezinto ezisetshenziswayo ku-heater ye-graphite futhi kuyindaba ebaluleke kakhulu ekusebenzeni kwe-graphite heater. Izendlalelo zamangqamuzana ezakhiwe ukunqwabelana kwamagesi noketshezi zinganamathela ngaphezu kwanoma iyiphi into eqinile. Ngenxa yokuncipha kancane kancane kwengcindezi, lezi zingqimba zamangqamuzana zizohwamuka kancane kancane ngenxa yokuthi amandla alezi zindawo mancane kunalawo akhishwa isifudumezi se-graphite. I-nitrogen, izincibilikisi eziguquguqukayo namagesi angasebenzi anezinga lokususa umoya ngokushesha. Uwoyela kanye nomhwamuko wamanzi uzoqhubeka unamathela phezulu futhi ngeke uhwamuke kuze kube amahora ambalwa kamuva. Izinto ezinama-porous, izinhlayiya zothuli nezinye izinto zemvelo zizokwandisa indawo engaphezulu, ngakho-ke kungenzeka ukuthi kubangele ukukhishwa kwegesi okwengeziwe. Imisebe kanye nezinga lokushisa kuzonikeza amandla anele okwenza ama- molecule amunca asuke phezulu. Lapho izinga lokushisa lomlilo likhuphuka, lingakwazi ukukhulula ama-molecule anamathele phezulu emazingeni okushisa aphansi. Ngakho-ke, njengoba izinga lokushisa lomlilo likhuphuka, i-degassing phenomenon izokhula kancane kancane.

Isakhiwo, ukulawulwa kwezinga lokushisa, inqubo yokushisa kanye nomoya ngaphakathi kwesithando somlilo we-graphite konke kuzothinta ngokuqondile ikhwalithi yomkhiqizo ngemva kokukhiqizwa kwe-graphite heater. Esithandweni sokushisa esakhayo, ukuphakamisa izinga lokushisa lensimbi kunganciphisa ukumelana nokuncibilika, kodwa amazinga okushisa aphakeme ngokweqile angabangela i-oxidation yokusanhlamvu noma ukushiswa ngokweqile, kuthinte kakhulu ikhwalithi yomkhiqizo ngaphakathi kwe-graphite heater. Phakathi nenqubo yokwelashwa kokushisa, uma insimbi ishiselwa endaweni ethile ngaphezu kwezinga lokushisa elibucayi bese ipholisa ngokuzumayo nge-ejenti yokupholisa, ukuqina namandla ensimbi kungathuthukiswa. Uma insimbi ishiselwa endaweni ethile ngaphansi kwezinga lokushisa elibucayi bese ipholiswa kancane, ingenza insimbi ikwazi ukumelana nokuqina.

Ukuze uthole ama-workpieces anezindawo ezibushelelezi kanye nobukhulu obunembile, noma ukunciphisa i-oxidation yensimbi ngenhloso yokuvikela isikhunta nokunciphisa izibonelelo zomshini, kungase kusetshenziswe izithando ezihlukahlukene zokushisa eziphansi kanye ne-non-oxidation. Esithandweni somlilo esivulekile esine-oxidation encane noma engekho nhlobo, ukushiswa okungaphelele kukaphethiloli kukhiqiza igesi enciphisayo. Ukushisisa i-workpiece kuyo kunganciphisa izinga lokulahlekelwa kokushiswa kwe-oxidation libe ngaphansi kuka-0.6%. I-high-purity graphite ibhekisela ku-graphite powder enokuqukethwe kwekhabhoni engaphezu kuka-99.9%. Le graphite ehlanzekile kakhulu enokuqukethwe kwekhabhoni ephezulu ine-conductivity kagesi enhle kakhulu, izakhiwo zokugcoba, ukumelana nokushisa okuphezulu, ukumelana nokugqoka, njll. I-graphite ye-high-purity ine-plasticity enhle futhi ingacutshungulwa ezintweni ezihlukahlukene zokuqhuba, njll.

I-high-purity graphite inezinhlelo zokusebenza ezibalulekile emkhakheni wokukhiqiza izimboni. Isetshenziswa ezimbonini ezifana conductivity kagesi, lubrication, kanye metallurgy. Ngesikhathi sokukhiqizwa kwe-graphite ephakeme kakhulu, okuqukethwe kokungcola kufanele kulawulwe ngokuqinile kusuka ezintweni zokusetshenziswa, futhi kukhethwe izinto zokusetshenziswa ezinomlotha ophansi. Ngaphezu kwalokho, kufanele kwenziwe imizamo yokuvimbela ukungezwa kokungcola ngangokunokwenzeka phakathi nenqubo yokukhiqiza. Kodwa-ke, ukunciphisa ukungcola ngokwezinga elidingekayo kwenzeka ikakhulukazi enqubweni ye-graphitization. I-Graphitization yenziwa emazingeni okushisa aphezulu, futhi ama-oxide amaningi ezakhi zokungcola azobola futhi ahwamuke kumazinga okushisa aphezulu kangako. Ukuphakama kwezinga lokushisa kwe-graphitization, ukungcola okuningi kuphuma, futhi kukhuphuka ukuhlanzeka kwemikhiqizo ye-graphite ephezulu ekhiqizwayo. Ukusetshenziswa kwe-high-purity graphite kusebenzisa ngokunenzuzo ukuhamba kahle kukagesi, ukusebenza kokugcoba, ukumelana nokushisa okuphezulu, njll.

Isizathu sokuthi kungani i-graphite ephakeme kakhulu inokuhlanzeka okuphezulu kanye nokungcola okumbalwa konke kuncike kunqubo ephelele yokukhiqiza kanye nemishini. Okuqukethwe ukungcola kungaphansi kuka-0.05%. I-colloidal graphite yethu, i-nano-graphite, i-high-purity graphite, i-ultrafine graphite powder neminye imikhiqizo ye-graphite powder isetshenziswa kakhulu embonini yamakhemikhali, ye-petroleum kanye ne-lubrication. I-high-purity graphite powder isetshenziswa ekucubunguleni nasekukhiqizeni izakhi zokushisa zikagesi, isikhunta sokubunjwa kwesakhiwo, izinsimbi zensimbi ezihlanzekile zokuncibilikisa, izinsimbi ze-graphite ezihlanzekile, izinto zokwakha ze-semiconductor, njll.