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Kwindawo yobushushu bobushushu obuphezulu bemizi-mveliso (njengabaguquleli bentsimbi, iileyile, kunye neziqhumiso),izitena zekhabhoni ye-magnesiumzigqame njengezona zinto ziphambili zokunqanda, ngenxa yokuxhathisa kwazo ngokugqwesileyo kwi-corrosion, ukuzinza kobushushu obuphezulu, kunye nokumelana nokothuka kwe-thermal. Inkqubo yokuvelisa ezi zitena kukudibanisa okuqinileyo kobuchwepheshe kunye nokuchaneka-isinyathelo ngasinye sinquma ngokuthe ngqo umgangatho wokugqibela wemveliso. Apha ngezantsi, sikuthatha kuhambo olupheleleyo lwemveliso yezitena zekhabhoni yemagnesium, sityhila indlela esiqinisekisa ngayo ukuba zonke izitena ziyahlangabezana nemigangatho yomgangatho woshishino.

1. UKhetho lweMathiriyeli ekrwada: ISiseko sezitena zeKhabhoni zeMagnesium ezikwiMgangatho oPhezulu

Umgangatho wezinto eziluhlaza ngumgca wokuqala wokukhusela kwi-magnesium carbon carbon performance. Sibambelela kwiikhrayitheriya zokukhetha ezingqongqo ukuqinisekisa ukuba icandelo ngalinye lihlangabezana nemigangatho ephezulu:

Ubunyulu beMagnesia eAggregate:Sisebenzisa i-magnesia edibeneyo okanye i-sintered magnesia enomxholo we-MgO ongaphezu kwe-96%. Esi sixhobo ekrwada sibonelela ngezitena ngokuxhathisa okuqinileyo kobushushu obuphezulu kunye nokumelana nokugqwala, ukumelana ngokufanelekileyo nokukhukuliseka kwentsimbi etyhidiweyo kunye ne-slag kwiziko.

Umthombo weKhabhoni yoHlelo oluPhezulu:I-graphite ye-flake yendalo enomxholo wekhabhoni we-90% + ikhethiwe. Ulwakhiwo lwayo olunomqolo luphucula ukuxhathisa ukothuka kwesitena, kunciphisa umngcipheko wokuqhekeka ngenxa yotshintsho olukhawulezayo lobushushu ngexesha lokusebenza kwesithando somlilo.

Isibophelelo sePremium:I-Phenolic resin (elungiselelwe ukumelana nobushushu obuphezulu) isetyenziswa njenge-binder. Iqinisekisa ukudibanisa okuqinileyo phakathi kwe-magnesia kunye negraphite, ngelixa ugwema ukubola okanye ukubola kumaqondo aphezulu, okuya kuchaphazela ingqibelelo yesitena.

Khangela izongezo:Inani elincinci le-antioxidants (ezifana nomgubo we-aluminium, umgubo wesilicon) kunye nezixhobo zokuncedisa i-sintering zongezwa ukukhusela i-graphite oxidation kunye nokuphucula ukuxinana kwezitena. Zonke izinto ezikrwada zifumana imijikelo emi-3 yovavanyo lokucoceka ukuphelisa ubumdaka obunokuthi buthathaka ukusebenza

2. Ukutyumza kunye neGranulating: Ulawulo lobungakanani beNcam echanekileyo yoLwakhiwo olufanayo

Ukusabalalisa ubungakanani besuntswana elilinganayo ngundoqo ekuqinisekiseni ukuxinana kunye namandla ezitena zekhabhoni ye-magnesium. Eli nqanaba lilandela iiparamitha zobugcisa ezingqongqo:

Inkqubo yokutyumza:Okokuqala, iibhloko ezinkulu ze-magnesia kunye negraphite zityunyuzwa zibe ngamasuntswana amancinci zisebenzisa izityumsi zemihlathi kunye nezityuli zempembelelo. Isantya sokutyumza silawulwa kwi-20-30 rpm ukuphepha ukufudumala kunye nomonakalo kwisakhiwo sezinto eziluhlaza.

Uvavanyo kunye noHlelo:Izinto ezityumkileyo zijongiwe ngezikrini ezingcangcazelisayo ze-multi-layer (ezinobungakanani bomnatha obuyi-5mm, 2mm, kunye ne-0.074mm) ukuze zihlulwe zibe zi-aggregates ezirhabaxa (3-5mm), i-aggregates ephakathi (1-2mm), i-fine aggregates (0.074-1mm), kunye ne-ultrafine powders (<0.0.0). Impazamo yobungakanani besuntswana ilawulwa ngaphakathi ±0.1mm

I-Granule Homogenization:Ubungakanani beengqungquthela ezahlukeneyo buxutywe kwi-mixer-speed mixer imizuzu eyi-10-15 ngesantya se-800 rpm. Oku kuqinisekisa ukuba ibhetshi nganye yeegranuli inokwakheka okungaguquguqukiyo, ibeka isiseko sokuxinana kwezitena ezifanayo.

3. Ukuxuba kunye noKuxova: Ukufezekisa iBonding eyomeleleyo phakathi kwamacandelo

Inqanaba lokuxuba kunye nokuxova limisela amandla okudibanisa phakathi kwezinto eziluhlaza. Sisebenzisa abaxube be-double-helix abaphezulu kwaye silawula ngokungqongqo iimeko zenkqubo:

Ukuxutywa kwangaphambili kwezinto ezomileyo:Ii-aggregates ezirhabaxa, eziphakathi, nezicolekileyo zixutywa kuqala zome kangangemizuzu emi-5 ukuqinisekisa ngokulinganayo ukwabiwa kwecandelo ngalinye. Eli nyathelo lithintela ukuxinana kwekhabhoni okanye i-magnesia yendawo, enokubangela umahluko wokusebenza

Ukongeza i-Binder kunye nokuxova:I-phenolic resin elungisiweyo (ishushu kwi-40-50 ℃ ukwenzela ukuba i-fluidity engcono) yongezwa kumxube owomileyo, ilandelwa yimizuzu engama-20-25 yokuxova. Iqondo lokushisa lomxube ligcinwa kwi-55-65 ℃, kwaye uxinzelelo lulawulwa kwi-0.3-0.5 MPa-oku kuqinisekisa ukuba i-binder igubungela ngokupheleleyo i-particle nganye, yenza i-stable "magnesia-graphite-binder" isakhiwo.

Uvavanyo lokungqinelana:Emva kokuxova, ukuhambelana komxube kuvavanywa rhoqo ngemizuzu eyi-10. Ukuhambelana okufanelekileyo yi-30-40 (elinganiswa imitha yokulinganisa okusemgangathweni); ukuba yome kakhulu okanye imanzi kakhulu, idosi ye-binder okanye ixesha lokuxova lihlengahlengiswa ngexesha lokwenyani.

4. Ukubumba uShicilelo: Ukubunjwa koxinzelelo oluphezulu loXinano kunye namandla

Ukubumba i-Press linyathelo elinika izitena zekhabhoni ye-magnesium ukumila kwazo kwaye ziqinisekisa ukuxinana okuphezulu. Sisebenzisa ii-automatic hydraulic presses kunye nolawulo loxinzelelo oluchanekileyo:

Ukulungiselela ukungunda:Iimolds zentsimbi ezenziwe ngokwezifiso (ngokweemfuno zabathengi kubungakanani bezitena, ezifana ne-230 × 114 × 65mm okanye ubungakanani obukhethekileyo) ziyacocwa kwaye zigqunywe ngearhente yokukhulula ukuthintela umxube ukuba ungabambeleli kubumba.

Uxinzelelo oluPhezulu:Umxube odibeneyo ugalelwe kwi-mold, kwaye i-hydraulic press ifaka uxinzelelo lwe-30-50 MPa. Isantya sokucofa sibekwe kwi-5-8 mm / s (uxinzelelo olucothayo lokuphelisa amaqamza omoya) kwaye lubambe imizuzwana emi-3-5. Le nkqubo iqinisekisa ukuba ubuninzi bezitena bufika kwi-2.8-3.0 g/cm³, kunye ne-porosity engaphantsi kwe-8%.

Ukwakhiwa kunye noHlolo:Emva kokucinezela, izitena zichithwa ngokuzenzekelayo kwaye zihlolwe iziphene zomhlaba (ezifana nokuqhekeka, imida engalinganiyo). Izitena ezineziphene zikhatywa ngokukhawuleza ukuphepha ukungena kwinkqubo elandelayo

5. UNyango loBubushushu (Ukunyanga): Ukuphucula i-Binder Bonding kunye noZinzo

Ukunyanga ukushisa (ukunyanga) kuqinisa i-binder's bonding effect kwaye isusa izinto eziguquguqukayo kwizitena. Sisebenzisa izitofu zetonela ngolawulo oluchanekileyo lobushushu:

Ukufudumeza kwe-Stepwise: Izitena zibekwe kwi-tonnel kiln, kwaye ubushushu buphakanyiswa stepwise:

20-80℃ (iiyure ezi-2):Khupha ukufuma komhlaba;
80-150℃ (iiyure ezi-4):Ukukhuthaza ukuphiliswa kwangaphambili kwe-resin;
150-200℃ (iiyure ezi-6):Gqibezela ukudibanisa i-resin kunye nokunyanga;
200-220℃ (iiyure ezi-3):Zinzisa ubume bezitena

Izinga lokufudumeza lilawulwa kwi-10-15 ℃ / iyure ukunqanda ukuqhekeka ngenxa yoxinzelelo lobushushu.

Ukususwa kwezinto eziguquguqukayo:Ngexesha lokunyanga, izinto eziguquguqukayo (ezifana ne-resins encinci ye-molecule) zikhutshwa nge-exhaust system ye-kiln, ukuqinisekisa ukuba isakhiwo sangaphakathi sesitena sixinene kwaye asinayo i-voids.
Inkqubo yokupholisa: Emva kokunyanga, izitena zipholile kwiqondo lokushisa kwiqondo le-20 ℃ / ngeyure. Ukupholisa okukhawulezileyo kuyaphetshwa ukunqanda umonakalo womothuko wobushushu

6. Emva kokwenziwa komsebenzi kunye nokuHlolwa koMgangatho: Ukuqinisekisa ukuba zonke izitena zidibana neMigangatho

Inqanaba lokugqibela lemveliso lijolise ekuqhubeni ngokuchanekileyo kunye novavanyo olungqongqo lomgangatho ukuqinisekisa ukuba isitena sekhabhoni ye-magnesium nganye siyahlangabezana neemfuno zesicelo seshishini:

Ukusila kunye nokucheba:Izitena ezinemiphetho engalinganiyo ziphantsi kusetyenziswa oomatshini bokusila be-CNC, ukuqinisekisa ukuba impazamo ye-dimensional ingaphakathi kwe-± 0.5mm. Izitena ezinokwakheka okukhethekileyo (ezifana nezitena ezimile okwe-arc zabaguquli) zicutshungulwa kusetyenziswa amaziko omatshini angama-5-axis ukuze atshatise igophe langaphakathi eludongeni lwesithando somlilo.

Uvavanyo oluBanzi loMgangatho:Ibhetshi nganye yezitena ifumana iimvavanyo ezi-5 eziphambili:

Ukuxinana kunye noVavanyo lwePorosity:Usebenzisa indlela ye-Archimedes, qinisekisa ukuxinana kwesambuku ≥2.8 g/cm³ kunye ne-porosity ≤8%.

Uvavanyo lwamandla acinezelayo:Vavanya amandla okucinezela isitena (≥25 MPa) usebenzisa umatshini wokuvavanya wendalo yonke

UVavanyo lokuNxhathisa iThermal Shock:Emva kwemijikelo ye-10 yokufudumeza (1100 ℃) kunye nokupholisa (ubushushu begumbi), jonga iintanda (akukho zintanda ezibonakalayo zivunyelweyo).

UVavanyo lokuxhathisa ukonakala:Ukulinganisa iimeko zesithando somlilo ukuvavanya ukuchasana kwezitena kukhukuliseko olutyhidiweyo lwe-slag (izinga lokhukuliseko ≤0.5mm/h).

Uhlalutyo lweNtengo yeMichiza:Sebenzisa i-X-ray fluorescence spectrometry ukuqinisekisa umxholo we-MgO (≥96%) kunye nomxholo wekhabhoni (8-12%).

Ukupakishwa kunye noGcino:Izitena ezifanelekileyo zipakishwe kwiikhathoni zobungqina bokufuma okanye iipalethi zokhuni, kunye nefilimu yobungqina bokufuma ejikelezwe ngeenxa zonke ukuphepha ukufunxa ukufuma ngexesha lokuhamba. Iphakheji nganye ibhalwe ngenombolo yebhetshi, umhla wemveliso, kunye nesatifikethi sokuhlolwa komgangatho wokulandeleka

Kutheni ukhetha izitena zethu zeMagnesium Carbon?

Inkqubo yethu yokuvelisa engqongqo (ukusuka ekukhethweni kwezinto eziluhlaza ukuya kwi-post-processing) iqinisekisa ukuba izitena zethu zekhabhoni ye-magnesium zinentsebenzo egqwesileyo kwiziko lobushushu obuphezulu. Nokuba zezeziguquli zentsimbi, iileyile, okanye ezinye izixhobo zobushushu obuphezulu, iimveliso zethu zinoku:

Ukumelana namaqondo obushushu ukuya kuthi ga kwi-1800 ℃ ngaphandle kokuthambisa okanye ukuguqulwa

Ukuxhathisa intsimbi etyhidiweyo kunye nokhukuliseko lwe-slag, ukwandisa ubomi benkonzo yeziko ngama-30% +.

Ukunciphisa ukugcinwa rhoqo kunye neendleko zemveliso kubathengi

Sinikezela ngezisombululo ezilungiselelweyo ngokohlobo lwesithando somlilo sakho, ubungakanani kunye neemeko zokusebenza. Qhagamshelana nathi namhlanje ukuze ufunde ngakumbi malunga nenkqubo yethu yokuvelisa izitena ze-magnesium okanye ukufumana isicatshulwa samahhala!