Monga njira yachikhalidwe yopangira mchenga, mchenga wokutira umakhalabe ndi udindo wofunikira popanga kupanga.Ngakhale njira yopangira furan core, njira zozizira zozizira ndi njira zina zikukula mosalekeza ndikugwiritsa ntchito, njira yake yopangira maziko ikugwiritsidwabe ntchito kwambiri m'mafakitale osiyanasiyana oponyera chifukwa cha madzi ake abwino kwambiri, mphamvu yayikulu komanso kukhazikika kwamafuta, komanso nthawi yayitali yosungira.Zimakhala zovuta kusintha m'mafakitale ena monga ma hydraulic parts, turbine shells ndi mafakitale ena apamwamba kwambiri.
Makhalidwe:
magwiridwe antchito amphamvu;madzi abwino, zisankho zamchenga ndi zitsulo zamchenga zomwe zimapangidwa zimakhala ndi ma contours omveka bwino komanso mawonekedwe owundana, ndipo zimatha kupanga mchenga wovuta;mawonekedwe a pamwamba a nkhungu mchenga (pachimake) ndi zabwino, roughness pamwamba akhoza kufika Ra = 6.3 ~ 12.5μm, ndi dimensional kulondola akhoza kufika CT7 ~ CT9 mlingo;kusweka kwabwino, ndipo zoponyedwa ndizosavuta kuyeretsa.
Kuchuluka kwa ntchito
Itha kugwiritsidwa ntchito popanga nkhungu zonse zoponya ndi mchenga.The zisamere pachakudya kapena mitima zingagwiritsidwe ntchito limodzi kapena ndi zisamere mchenga (cores);itha kugwiritsidwa ntchito osati poponya chitsulo chokoka kapena kuponyera pang'onopang'ono, komanso kuponya mchenga wachitsulo ndi kuponyera kotentha kwa centrifugal;itha kugwiritsidwa ntchito osati kupanga zitsulo zotayidwa komanso zopanda chitsulo, komanso kupanga zitsulo zachitsulo.
kupanga
Nthawi zambiri amapangidwa ndi zida zomangira, zomangira, zochiritsa, zothira mafuta ndi zina zapadera.
(1) Zida zotsutsa ndizo zigawo zake zazikulu.Zofunikira pazida zodzitchinjiriza ndi: kukana kwambiri, kutsika pang'ono, tinthu tating'onoting'ono tozungulira, tolimba, ndi zina zambiri. Mchenga wa silika wothira nthawi zambiri umagwiritsidwa ntchito.Zofunikira pamchenga wa silika ndi: okhutira kwambiri a SiO2 (zitsulo zotayidwa ndi zopanda chitsulo zosapanga dzimbiri zimafuna zoposa 90%, ndipo zida zachitsulo zimafuna zoposa 97%);matope saposa 0.3% (mchenga wotsukidwa)–[matope a mchenga wotsukidwa ndi ocheperapo;kukula kwa tinthu ① kumagawidwa pa nambala 3 mpaka 5 zoyandikana ndi sieve;mawonekedwe a tinthu ndi ozungulira, ndipo chinthu cha angular sichiyenera kukhala chachikulu kuposa 1.3;kuchuluka kwa acidity sikuchepera 5 ml.
(2) Phenolic resin nthawi zambiri amagwiritsidwa ntchito ngati binder.
(3) Hexamethylenetetramine nthawi zambiri amagwiritsidwa ntchito ngati mankhwala;calcium stearate nthawi zambiri amagwiritsidwa ntchito ngati mafuta, omwe amagwiritsidwa ntchito poletsa kuphatikizika ndikuwonjezera madzimadzi.Ntchito yayikulu ya chowonjezera ndikuwongolera magwiridwe antchito a mchenga wokutidwa.
(4) Basic ratio of Component Ratio (mass section,%) Kufotokozera: Mchenga waiwisi 100 Mchenga wothira, Phenolic resin 1.0-3.0 (kulemera kwa mchenga waiwisi), Hexamethylenetetramine (yamadzimadzi 2) 10-15 (kulemera kwa utomoni), Calcium stearate 5-7 (kulemera kwa utomoni), Zowonjezera 0.1-0.5 (kulemera kwa mchenga waiwisi).1:2) 10-15 (kulemera kwa utomoni), Calcium stearate 5-7 (kulemera kwa utomoni), Zowonjezera 0.1-0.5 (kulemera kwa mchenga waiwisi).
Njira yopanga
Kukonzekera kumaphatikizapo kuzizira kozizira, kutentha kwa kutentha ndi kutentha.Pakali pano, kupanga pafupifupi onse utenga ❖ kuyanika otentha.Kutentha kotentha kumatenthetsa mchenga waiwisi ku kutentha kwina, kenaka kusakaniza ndi kusakaniza ndi utomoni, urotropine amadzimadzi solution ndi calcium stearate motsatana, kenako kuzizira, kuphwanya ndi chophimba.Chifukwa cha kusiyana kwa chilinganizo, njira yosakanikirana ndi yosiyana.Pakalipano, pali mitundu yambiri ya mizere yopanga ku China.Pali pafupifupi 2000 ~ 2300 mizere yodziwikiratu yokhazikika yokhala ndi chakudya chamanja, ndipo pali mizere pafupifupi 50 yoyendetsedwa ndi makompyuta, yomwe imathandizira bwino kupanga komanso kukhazikika kwazinthu.Mwachitsanzo, mzere wodziwonetsera wokha wa xx Casting Co., Ltd. uli ndi nthawi yodyetsa yolondola ya sekondi 0.1, kuwongolera kutentha kwa kutentha kwa 1/10 ℃, ndipo kusakanikirana kwa mchenga kumatha kuwonedwa nthawi zonse kudzera pavidiyo. , ndi mphamvu yopanga matani 6 pa ola.
Ubwino wa ndondomeko
Zabwino kwambiri fluidity
Amakutidwa ndi utomoni wolimba ndipo amaoneka ngati mchenga wouma.Fluidity yabwino kwambiri ndi mwayi wake waukulu, womwe umakhala woyenera kwambiri pazitsulo za mchenga zovuta komanso zazing'ono.
Wabwino pamwamba khalidwe la mchenga pachimake
Zimapangidwa ndi kuphulika kwa kuwombera, ndipo pamwamba pa mchenga ndi wandiweyani komanso wosalala, zomwe zingathe kusintha bwino kumapeto kwa kuponyedwa.
Mtengo wotsika wopangira zipolopolo core
Ili ndi malo osungunuka kwambiri ndipo imatha kugwiritsidwa ntchito popanga zipolopolo, osagwiritsa ntchito mchenga wocheperako, mtengo wotsika komanso mpweya wabwino.
Mphamvu zapamwamba komanso kukhazikika kwamafuta
pogwiritsa ntchito thermoplastic phenolic resin, imakhala ndi mphamvu zambiri komanso kukhazikika kwamafuta, zomwe zimapatsa mwayi wapadera pakugwiritsa ntchito mbali zina zazikulu komanso zazikulu.
Nthawi yayitali yosungiramo mchenga pachimake
Utomoni wamchere wa phenolic womwe umagwiritsidwa ntchito mumchenga wokutidwa ndi hydrophobic, pachimake mchenga umalimbana bwino ndi chinyezi, palibe zofunikira zapadera zosungirako, ndipo palibe kuchepa kwakukulu kwamphamvu pambuyo posungira nthawi yayitali.
Zosiyanasiyana ntchito
Chokutidwa mchenga pachimake ndi oyenera kuponyera njira zonse zitsulo zipangizo.
If you want to know more about shell mold casting process, pls feel free to contact lydia@welongchina.com.
Nthawi yotumiza: Jun-13-2024
