Mukamva 'colloidal silica investment casting', anthu ambiri nthawi yomweyo amaganiza za binder - madzi amkaka omwe mumasakaniza mu slurry. Ndiwo malo oyamba kumene kuganiza nthawi zambiri kumalakwika. Si guluu chabe; ndiye msana wonse wa chipolopolocho, komanso momwe mungasamalire chemistry ndi kagwiritsidwe ntchito kake zimatengera ngati mupeza zosalakwitsa kapena nyumba yosungiramo zinthu zodzaza ndi zinyalala. Ndawonapo masitolo akutsanulira ndalama muzitsulo zamtengo wapatali kuti zonse ziwonongeke pa chipolopolo chosakhala bwino chomwe chinagwa kapena mitsempha. Masewera enieni ali mu gawo la kukula kwa tinthu ta colloidal silika, kukhazikika kwa pH, komanso moona mtima, kuwongolera njira, zomwe ambiri amazinyalanyaza mpaka atakumana ndi kulephera kokwera mtengo.
Udindo Wosamvetsetseka wa Colloidal Silica
Tiyeni tinene mwachindunji. Colloidal silica si chinthu chimodzi chokha. Zomwe mumapeza kuchokera kwa ogulitsa osiyanasiyana zimakhala zosiyana. Tinaphunzira zimenezi zaka zambiri zapitazo. Tidasinthira ku silica yotsika mtengo, yopanda mtundu wa colloidal popanga chipolopolo chathu, poganiza kuti zomwe zili patsambalo zinali pafupi mokwanira. Mlingo wa sodium unali wokwera pang'ono. Chotsatira? Pambuyo pa siteji ya dewaxing, malaya oyambirirawo anayamba kupanga micro-crazing. Sizinadziwike nthawi yomweyo, koma panthawi yotentha kwambiri, ming'alu yaing'onoyo inkafalikira. Zojambula zomaliza, makamaka m'zigawo zovuta zazitsulo zosapanga dzimbiri, zidawonetsa kulowa kwachitsulo kosasinthasintha. Kutayika kwathunthu. Ndipamene idadina: kukhazikika kwa ionic ndi zomwe zili mu Na2O mu binder ndizomwe sizingakambirane. Si katundu.
Izi zimalumikizana mwachindunji ndikuyika ndalama kwa ma aloyi apadera monga opangidwa ndi faifi tambala. Ma alloys awa ali ndi malo osungunuka kwambiri ndipo amatha kuchitapo kanthu modabwitsa. Ngati chipolopolocho sichimakanizidwa bwino komanso chokhazikika, mumapeza kugwirizana kwa zipolopolo zachitsulo-chilema choyipa chotchedwa slag inclusion kapena pamwamba pitting. Silika yoyera kwambiri, yotsika kwambiri ya alkali colloidal ndiyofunikira kwambiri pano. Imapanga maukonde amphamvu, osasunthika kwambiri a silika pambuyo powombera. Ndikukumbukira pulojekiti ya gawo la turbine pomwe tidagwiritsa ntchito chomangira chokhazikika; mapeto a pamwamba anali osavomerezeka. Kusintha kukhala wokhazikika, colloidal silika dongosolo ndi zolimba tinthu kugawa anathetsa izo. Mdierekezi ali muzambiri zimenezo.
Mukuwona makampani ngati Malingaliro a kampani Qingdao Qiangsenyuan Technology Co., Ltd. ndi zaka makumi atatu mu nkhungu ya zipolopolo ndi kupanga ndalama. Iwo angadziwe izi kwathunthu. Pamene mukuchita ndi cobalt-based alloys tsiku ndi tsiku, simungakwanitse kuchitira binder ngati lingaliro lotsatira. Kugwira ntchito kwawo kwa nthawi yayitali kumapereka kumvetsetsa kwakuya, kothandiza kwa kuyanjana kwazinthu izi zomwe mumangopeza kuchokera kumayendedwe obwerezabwereza komanso kuthetsa mavuto.
Kuwongolera Njira: Kumene Chiphunzitso Chimakumana ndi Malo Ogulitsira
Chabwino, ndiye kuti muli ndi chomangira chabwino. Msampha wotsatira ndi chilengedwe cha chipinda cha slurry. Kuwongolera kutentha ndi chinyezi. Zikumveka ngati zoyambira, koma ndakhala ndikuzipeza komwe izi ndizongoganiza. Colloidal silica-based slurries ndi tcheru. Ngati sitolo ikutentha kwambiri, slurry gels imathamanga kwambiri, ma viscosity spikes, ndipo makulidwe anu okutira amakhala osagwirizana. Ndi chinyezi kwambiri, ndipo nthawi yowuma pakati pa malaya imatambalala, kupha nyimbo yanu yopangira. Tinali ndi chilimwe pomwe AC inalephera m'chipinda cha slurry. Kupanga konse kwa kuponya ndalama zipolopolo za ma valve a ma valve zimayenera kuchotsedwa chifukwa chojambuliracho chinauma mofulumira kwambiri, kupanga mawonekedwe ofooka ndi zigawo zotsatila za stucco.
Njira yodulira ndi kuyika ndi luso lina. Chovala choyamba ndi chirichonse. Iyenera kufananiza mwatsatanetsatane ndondomeko ya sera. Timagwiritsa ntchito ufa wa zircon wabwino kwambiri ndi silika wa colloidal pa malaya oyambawo. Koma chonyowetsa chokhazikika chiyenera kukhala chowonekera. Zochepa kwambiri, ndipo mumapeza thovu ndi voids pamtunda wa chitsanzo. Mochuluka, ndipo slurry amathamanga, kupanga mawanga owonda. Izi sizomwe mumayika kamodzi ndikuyiwala. Mapangidwe a sera, kutentha kwake pamwamba, ngakhale chotulutsa chomwe chimagwiritsidwa ntchito pakufa, zonse zimakhudza. Ndikusintha kosalekeza.
Ndi kuyanika. Kuumitsa mpweya mokakamiza kumakhala kofala, koma mpweya uyenera kukhala wa laminar, osati chipwirikiti. Simukufuna fumbi la pansi (lomwe nthawi zambiri limakhala lodzaza ndi zinthu zam'mbuyomu) lodzilowetsa mu malaya onyowa. Tidapanga kanyumba kakang'ono kokakamiza kuti tiwumitse malaya oyamba, ndipo chiwopsezo chochokera ku inclusions chidatsika kwambiri. Izi ndi zosadetsa nkhawa, zopeza ndalama zambiri zomwe zimalekanitsa njira yodalirika ndi yachisokonezo.
Case in Point: Zipolopolo za Zipolopolo za Complex Geometries
Tengani kuponya kochititsa chidwi, masamba owonda, ma contour akuya. Vutoli silimangopanga chipolopolocho kukhala cholimba mokwanira; Zimapangitsa kuti mpweya uzitha kutulutsa mpweya panthawi yothira ndi kupsa mtima. Apa ndipamene kapangidwe ka gel ka colloidal silica binder ndikofunikira. Ngati mungakhazikitse slurry kuti mukhale ndi nthawi yayitali yogwira ntchito, mutha kusokoneza micro-porosity ya gel mutawombera. Amakhala wandiweyani kwambiri.
Tinayesa kuwonjezera zonyowetsa zabwino kwambiri, zoyendetsedwa bwino ndikusintha ma gelling (nthawi zambiri mchere wa alkali) kuti tikonze izi. Cholinga chake chinali chipolopolo chomwe chinapambana mayesero amphamvu koma chinalinso ndi mpweya wokwanira. Kupambanaku kudabwera osati kungoyang'ana pepala la data la binder, koma poyesa kuyesa kwathu pazipolopolo zowotchedwa. Tinagwirizanitsa magulu osiyanasiyana a slurry ndi zotsatira zenizeni zoponyera zigawo zazitsulo. Zomwe zidalipo zinali zosokonekera, koma zomwe zidachitikazo zinali zomveka bwino: kutsika pang'ono kwa viscosity slurry, komwe kumagwiritsidwa ntchito muzovala zopyapyala, kumapereka mawonekedwe othamangitsidwa bwino a magawo ovutawa.
Kuthetsa mavuto kotereku ndiye maziko a patsogolo chipolopolo nkhungu kuponyera. Si buku lophunzirira. Ndi za kupanga nkhokwe yanu yamkati yazomwe zimayambitsa ndi zotsatira zake. Kampani ngati QSY, yokhazikika pakupanga makina onse ndi CNC, mwina ili ndi mayankho olimba. Amatha kuyika makina oponyera, kuwona cholakwika cham'munsi kuchokera ku zipolopolo, ndikuchiyang'ananso ku gulu linalake la slurry kapena parameter yowumitsa. Mphamvu yophatikizika imeneyo ndi yamphamvu.
The Alloy Factor: Chifukwa Chake Zinthu Zimapangitsa Kusankha kwa Binder
Izi zimandibweretsa ku zipangizo. Kugwira ntchito ndi chitsulo chosungunuka ndi dziko limodzi; ntchito ndi zotakasika superalloys ndi china. Kwa nickel kapena cobalt-based alloys, chipolopolocho sichiyenera kukhala cholimba, komanso chosakanikirana ndi mankhwala. Ma refractories apamwamba kwambiri a alumini nthawi zambiri amagwiritsidwa ntchito pazovala zosunga zobwezeretsera. Koma chomangira - silika wa colloidal - ndiye matrix wapadziko lonse lapansi akugwira zonse palimodzi. Chidetso chilichonse kapena kusakhazikika pano ndi malo omwe angalephere pa 1500 ° C+.
Nthawi ina tinali ndi vuto la matope ong'ambika pamalo akulu, athyathyathya a zitsulo zosapanga dzimbiri. Chigobacho chinkawoneka bwino chisanadulidwe. Vuto linali kusagwirizana kwakukula kwamafuta pakati pa gel osakaniza silika ndi refractory filler mu malaya amaso. Chomangiracho chinali cholimba kwambiri pambuyo poumitsa. Yankho lake linaphatikizapo kusakaniza kachulukidwe kakang'ono kazinthu zina za silika za colloidal ndi kusinthidwa kwa particle morphology kukhala slurry yathu yoyamba. Zinapanga ma gel okhululukidwa maukonde omwe amatha kupirira kupsinjika kwa kutentha popanda kusweka. Iyi si njira yokhazikika. Kunali kukonza kobadwa kofunikira.
Mulingo uwu wakusintha kwazinthu zenizeni ndi wofunikira. Pa Webusaiti ya QSY, amalemba ntchito zawo ndi ma aloyi apadera. Aliyense m'gawoli amadziwa kuti mawuwa akutanthauza laibulale yakuya, yogwiritsidwa ntchito ndi magawo azinthu za banja lililonse. Dongosolo la silika la colloidal la cobalt alloy lidzakhala ndi ma nuances poyerekeza ndi lachitsulo chokhazikika cha kaboni. Itha kukhala mtundu wosiyana, kuphatikizika kosiyana, kapena gulu loyendetsedwa bwino la magawo a slurry.
Malingaliro Omaliza: Ndi Dongosolo, Osati Chofunikira
Chifukwa chake, kukulunga izi, chotengera chofunikira colloidal silica Investment casting ndikusiya kuona silika wa colloidal ngati chinthu chongogulidwa. Ndilo gawo lapakati la dongosolo la tcheru, lodalirana. Sera, malo ozungulira, ufa wonyezimira, mchenga wa stucco, njira yowumitsa, ndipo pamapeto pake, alloy akutsanuliridwa - zonsezi zimalankhula ndi chomangira. Makhalidwe a binder ndiyo njira yomaliza yodziwika.
Ukatswiri weniweni wagona pakutanthauzira zizindikiro. Kusintha pang'ono kwa nthawi yothira slurry. Kusiyana kobisika kwa gloss wa malaya owuma. Kusiyana kwamphamvu pang'ono mu gawo loyeserera lowotchedwa. Izi ndi zinthu zomwe zimakuuzani ngati ndondomeko yanu ikulamulira. Ndi zamphamvu, nthawi zina zokhumudwitsa. Palibe yankho limodzi lolondola, yankho lolondola lokha la shopu yanu, zida zanu, ndi kusakaniza kwazinthu zanu.
Ichi ndichifukwa chake moyo wautali mubizinesi iyi, monga mbiri yazaka 30 yamakampani monga QSY, ndi chizindikiro chodalirika. Zikutanthauza kuti mwina adadutsa pamavutowa, adapeza mayankho awo, ndikukhazikitsa njira zawo. Kwa aliyense amene alowa mu izi, lemekezani njira ya silika ya colloidal. Ikani zida zoyezera za magawo a slurry. Lowetsani chilichonse. Konzekerani kuti mudetse manja anu ndikusintha. Kusiyanitsa pakati pa phindu ndi kutayika nthawi zambiri kumakhala mumadzi oyera amkaka ndi momwe mumasankhira.
