Ukusetyenziswa kwegraphite ephezulu: i-graphite powder.

Ukusetyenziswa kwegraphite ephezulu: i-graphite powder. Kutheni i-graphite powder ithandwa kangaka? Imarike yasekhaya yezifudumezi zegraphite kulindeleke ukuba ibethembisa. Kutheni le nto izifudumezi zegraphite zithandwa kakhulu phakathi kwabantu? Enyanisweni, isizathu sokuba ithandeke ngakumbi phakathi kwabantu ayinakwahlulwa kwiingenelo zayo. Ngoku, makhe sijonge kwiingenelo ezithile zesifudumezi segraphite kunye!

1. Iphelisa ngokupheleleyo i-oxidation kunye ne-decarburization kwi-workpiece surface ngexesha lokufudumala, kwaye inokufumana indawo ecocekileyo ngaphandle koluhlu olubi. Oku kubaluleke kakhulu ekuphuculeni ukusebenza kokusika kwezo zixhobo ezisila kuphela icala elinye ngexesha lokugaya (ezifana ne-twist drills apho i-decarburization layer kwi-groove surface ibonakaliswe ngokuthe ngqo kwi-cut cut after grinding).
2. Ayibangeli ukungcoliseka kwendalo kwaye ayifuni unyango lwenkunkuma emithathu.

3. Inomgangatho ophezulu we-mechatronics. Ngokusekelwe ekuphuculweni komlinganiselo weqondo lokushisa kunye nokuchaneka kokulawula, ukuhamba kwezinto zokusebenza, ukulungiswa koxinzelelo lomoya, ukulungiswa kwamandla, njl.

4. Ukusetyenziswa kwamandla kuphantsi kakhulu kuneziko lokuhlambela ityuwa. Igumbi lokufudumeza eliphucukileyo langoku legraphite lixhotyiswe ngeendonga zokugquma kunye nezithintelo ezenziwe ngezinto zokugquma ezikumgangatho ophezulu, ezinokugxininisa kakhulu amandla okufudumeza ombane ngaphakathi kwegumbi lokufudumeza, ukufikelela kwiziphumo ezimangalisayo zokonga amandla.

5. Ukuchaneka komlinganiselo weqondo lokushisa kunye nokubeka iliso kuphuculwe kakhulu. Ixabiso elibonisayo le-thermocouple lifikelela ± ubushushu besithando somlilo1.5°c. Nangona kunjalo, umahluko weqondo lokushisa phakathi kweendawo ezahlukeneyo zenani elikhulu lee-workpieces kwisithando somlilo mkhulu. Ukuba ukujikelezwa ngenkani kwerhasi enqabileyo yamkelwa, umahluko weqondo lobushushu usenokulawulwa ngaphakathi kwe ±5 °c.

I-Degassing yinto eyenzeka ngokucotha ukuguquka kwemathiriyeli kwisifudumezi segraphite kwaye ngowona mba ubalulekileyo ekusebenzeni kwesifudumezi segraphite. Iileyile zemolekyuli ezenziwe kukuqokelelana kweegesi kunye nolwelo zinokunamathela kumphezulu wayo nayiphi na imathiriyeli eqinileyo. Ngenxa yokuhla kancinci koxinzelelo, ezi maleko zemolekyuli ziya kuthi kancinane zibe ngumphunga ngenxa yokuba amandla ale miphezulu angaphantsi kwalawo akhutshwa sisifudumezi segraphite. Nitrogen, izinyibilikisi eziguquguqukayo kunye neegesi ezingasebenziyo zinesantya esikhawulezayo sokukhupha umoya. I-oyile kunye nomphunga wamanzi uya kuqhubeka unamathela kumphezulu kwaye awuyi kuphuma umphunga kude kube ziiyure ezininzi kamva. Izinto ezixubileyo, uthuli kunye nezinye izinto zendalo ziya kwandisa indawo ephezulu, ngoko kunokwenzeka ukuba kubangele ukutshatyalaliswa kwegesi. Ukusasazeka kwemitha kunye nobushushu kuya kunika amandla okwaneleyo ukwenza iimolekyuli ezifunxayo zisuke kumphezulu. Xa iqondo lokushisa lesithando somlilo liphakama, liyakwazi ukukhulula iimolekyuli ezinamathele kumphezulu kumaqondo aphantsi. Ngoko ke, njengoko ukushisa kwesithando somlilo kuphakama, i-phenomenon ye-degassing iya kwanda ngokuthe ngcembe.

Ubume, ulawulo lobushushu, inkqubo yokufudumeza kunye nomoya ngaphakathi kwesithando somlilo wegraphite zonke ziya kuchaphazela ngokuthe ngqo umgangatho wemveliso emva kokuveliswa kwesifudumezi segraphite. Kwiziko lokufudumeza, ukuphakamisa ubushushu besinyithi kunokunciphisa ukuxhathisa ukunyibilika, kodwa amaqondo obushushu aphezulu kakhulu anokubangela i-oxidation yeenkozo okanye ukutshisa kakhulu, okuchaphazela kakhulu umgangatho wemveliso ngaphakathi kwesifudumezi segraphite. Ngethuba lenkqubo yokunyanga ukushisa, ukuba insimbi ifudumala kwinqanaba elithile ngaphezu kokushisa okubalulekileyo kwaye ngokukhawuleza ipholile nge-agent epholileyo, ukuqina kunye namandla ensimbi kunokwandiswa. Ukuba intsimbi ifudunyezwa kwindawo ethile ngaphantsi kweqondo lokushisa elibalulekileyo kwaye emva koko ipholile ngokukhawuleza, inokwenza intsimbi ibe namandla ngakumbi.

Ukuze ufumane i-workpieces eneendawo ezigudileyo kunye nemilinganiselo echanekileyo, okanye ukunciphisa i-oxidation yesinyithi ngenjongo yokukhusela i-molds kunye nokunciphisa izibonelelo ze-machining, iintlobo ezahlukeneyo zokufudumeza i-oxidation kunye ne-non-oxidation zinokwamkelwa. Kwisithando somlilo esivulekileyo esine-oxidation encinci okanye engekho, ukutsha okungaphelelanga kwepetroli kuvelisa ukunciphisa igesi. Ukufudumeza i-workpiece kuyo kunokunciphisa izinga lelahleko yokutshisa i-oxidation ukuya ngaphantsi kwe-0.6%. I-graphite ecocekileyo ibhekisela kwi-graphite powder enomxholo wekhabhoni ngaphezu kwe-99.9%. Le graphite ecocekileyo enomxholo ophezulu wekhabhoni ine-conductivity egqwesileyo yombane, iipropati zokuthambisa, ukumelana nobushushu obuphezulu, ukuxhathisa ukunxiba, njl.

Igraphite yococeko oluphezulu inezicelo ezibalulekileyo kwindawo yokuvelisa ishishini. Isetyenziswa kumashishini afana ne-conductivity yombane, i-lubrication, kunye ne-metallurgy. Ngethuba lokuveliswa kwe-graphite ecocekileyo, umxholo wokungcola kufuneka ulawulwe ngokungqongqo kwizinto eziluhlaza, kunye nezinto eziphathekayo ezinomlotha ophantsi kufuneka zikhethwe. Ngaphezu koko, iinzame kufuneka zenziwe ukuthintela ukongezwa kokungcola kangangoko kunokwenzeka ngexesha lenkqubo yokuvelisa. Nangona kunjalo, ukunciphisa ukungcola ukuya kwinqanaba elifunekayo kwenzeka ikakhulu kwinkqubo yegraphitization. I-Graphitization yenzeka kumaqondo obushushu aphezulu, kwaye ii-oxide ezininzi zezinto ezingacocekanga ziya kubola kwaye zibe ngumphunga kumaqondo obushushu anjalo. Ukuphakama kweqondo lobushushu be-graphitization, kokukhona ukungcola kukhutshwa, kunye nokunyuka kokucoceka kweemveliso zegraphite eziveliswayo. Ukusetyenziswa kwe-graphite ecocekileyo ithatha ithuba lokuhamba kombane okugqwesileyo, ukusebenza kwe-lubricating, ukumelana nobushushu obuphezulu, njl.

Isizathu sokuba kutheni igraphite ecocekileyo inobunyulu obuphezulu kunye nokungcola okumbalwa konke kuxhomekeke kwinkqubo yokuvelisa kunye nezixhobo ezigqibeleleyo. Umxholo wokungcola ungaphantsi kwe-0.05%. I-colloidal graphite yethu, i-nano-graphite, i-graphite ephezulu-ucoceko, i-ultrafine graphite powder kunye nezinye iimveliso ze-graphite powder zisetyenziswa kakhulu kwimichiza, i-petroleum kunye ne-lubrication industry. I-high-purity graphite powder isetyenziswe ekuqhutyweni nasekuveliseni izinto zokufudumeza zombane, ukubunjwa kwesakhiwo, izibonda ezihlambulukileyo zetsimbi zokunyibilikisa, ii-graphite crucibles, izixhobo ze-semiconductor, njl.