Olw’obulungi bw’okufulumya, obucaafu obutono mu butonde bw’ensi n’omuwendo omutono ogw’okufulumya, EPC etwalibwa nga tekinologiya omupya ow’okukola ebintu mu kyasa 21. Grate kitundu kikulu nnyo mu kyuma ekikuba ebyuma, ekyuma ekikuba ebyuma nga kiriko grate ku bbugumu erya waggulu oluvannyuma lw’okwokya, evvu slag ekola omulimu ogw’okuwagira, ekintu kino kyetaaga okuziyiza ebbugumu, okuziyiza okwambala, brand CR20MN14Si2n. Ebipimo by’ensengekera y’ekisenge ky’ekisenge ekisuuliddwa biba mm 70 obuwanvu, obugazi bwa mm 40 n’obuwanvu bwa mm 800, ate ekizito ekitaliiko kkiro 19. Tekinologiya w’okusuula yeetaaga okulongoosebwa mu bujjuvu, tewali buzibu bwa kusuula bukkirizibwa ku kifo we bakolera, era n’obulungi bw’okufulumya obw’amaanyi bwetaagisa. Kiyinza okulabibwa nti wadde ensengeka ya grate strip casting nnyangu, erina ebyetaago bingi ku tekinologiya w’okufulumya n’okusuula tekinologiya.
Okukola grate strip nga EPC nkola ya mulembe era nnungi. Nga tuluubirira ebizibu by’okuyingiza n’okuyingiza omusenyu mu nkola y’okusuula mu ngeri ey’olubereberye, awamu n’ensonga lwaki basuula okusuula, okunoonyereza kuno kwalongoosa enkola y’okusuula (casting process) y’okusuula ebbaala ya grate ku musingi gw’okwekenneenya n’obwegendereza enkola eyasooka, okusobola okulongoosa obulungi enkola y’okufulumya ey’okusuula n’okukendeeza ku muwendo gw’okufulumya nga tulongoosa enkola y’okusuula.
Enkola eyasooka n'embeera y'okufulumya .
1.1 Ensengeka y’enkola eyasooka yeettanira enkola y’okufulumya eya Lost Mode Casting. Ekibinja ekiri mu bbokisi kitwalibwa mu modeling, era enjatika zijjula langi ennyogovu. Enkula y’ekibokisi ky’omusenyu eri2 200 obuwanvu bwa mm, 1 200 obugazi mm ate obuwanvu bwa mm 800. Buli kibokisi kirimu ekibinja 1 eky’okusuula, era buli kibinja kifulumya ebikozesebwa 12. Enkola y’okuyiwa egulumizibwa eragiddwa mu kifaananyi. 2. ebbugumu ly’okusuula liri 1 620℃, puleesa embi ey’okusuula eri -0.055MPa, ate puleesa embi eri -0.02MPa mu kiseera ky’okukwata puleesa, ate obudde bw’okukwata puleesa buba bwa ddakiika 30.
1.2 Enkola y’enkola ey’olubereberye n’omutindo gw’okusuula .
1.2.1 Ebifaananyi by’enkola eyasooka .
Mu nkola eyasooka mulimu risers bbiri mu nkola eyasooka. Amazzi g’ekyuma gayiibwa mu kifo ekisuuliddwa okuva mu riser emu. Ekisinziiro ekiri ku nkomerero ey’ewala kibeera kigulumivu ekinyogovu, era enkomerero okumpi ne sprue ye riser eyokya. Ebanga ly’okuliisa erya riser eriteekeddwa mu nkola eyasooka lyenkanawa n’emirundi 3 egy’obuwanvu bw’ekisenge ky’ekitundu ky’okuliisa ekisuuliddwa. Olw’ekikolwa ekibi eky’okuliisa eky’okusitula ennyogovu ku nkomerero ey’ewala, ekitundu eky’omu makkati eky’okusuula tekiyinza kuliisibwa kusukka bbanga ly’okuliisa, kale enkola eno ey’okuliisa terimu magezi. Enkula y’ekibokisi ky’omusenyu nnene nnyo, era nga esobola okusuza ebisusunku ebisingawo. Naye enkola y’okufulumya ebitundu 12 eby’ekibinja ky’ekyokulabirako mu kibokisi kimu n’okuziika layeri emu yokka mu kibokisi ekiziikiddwa si ya magezi. Ekifo kya bbokisi y’omusenyu tekikozesebwa bulungi, era obulungi bw’okufulumya buba butono nnyo.
1.2.2 Omutindo gw'okusuula .
. Naye olw’okukozesa ekika ky’ekibinja ky’ekibokisi, kale amaanyi g’ebitundu ebijjudde langi ennyogovu tegamala, okunywerera si kwa maanyi, kwa bitundu by’ekizibu ebitali binywevu. Mu kiseera ky’okuyiwa, ebitundu bino ebisiba bijja kumenyebwa amazzi g’ekyuma ag’ebbugumu eringi, ekivaamu okusuula obulema mu ssala n’okuyingiza omusenyu; Okugatta ku ekyo, mu nkola y’okusuula, olw’okuba enkozesa entuufu ey’okusuula tetwalibwa mu nkola, ffeesi entuufu ekola ey’okusuula eba waggulu mu ludda lw’ekifo ky’okusuula, naye ffeesi ekola ey’okusuula tekkirizibwa kuba na bulema, ekivaamu okusuula ebitundutundu olw’embizzi n’omusenyu. Obuzibu bw’okuyingiza mu ssala n’omusenyu oluvannyuma lw’okulongoosa mu bujjuvu biragiddwa mu kifaananyi 3.
2) Ebituli ebizingiddwa birabika ku ngulu w’ebisubiddwa. Okusinziira ku nkula y’ebikyamu, kizuulibwa nti omukka gw’amazzi ogukolebwa ekizigo tegukala kimala okuleeta obutuli. Nga ekiva mu nkola y’okufulumya, kino kiri nti, omukozi ali mu kukaza okusiiga n’okukebera link to do not quite meticulous, cause coating to do not get complete drying. Enkula y’obulema bwa stomatal eragiddwa mu kifaananyi 4.
2. Okulongoosa enkola n’okukozesa ekikolwa .
2.1 Okulongoosa enkola .
Okusinziira ku bizibu ebiri mu kukola ddala n’ensonga y’okusuula ebisasiro, enkola y’okusuula grate strip yalongoosebwa.
2.1.1 Okulongoosa mu kuyiwa riser .
Okusobola okwongera ku nnywevu y’enkola, dizayini y’okuyiwa okusuula (casting pouring riser) ekyusibwa. Ebiwujjo ebibiri ebyasooka bisembera okumpi n’oludda lw’obuwanvu bw’obuwanvu bw’okusuula. Okusinziira ku kubala ebanga ly’okuliisa, wakati w’ekifo we basimbuliza mm 260 okuva ku nkomerero zombi ez’okusuula, era okuliisa kuyinza okutuukirira mu kifo. Waliwo ebbaala za grate ssatu okubuna riser emu. Okugatta ku ekyo, omulyango ogw’omunda gukwatagana butereevu n’ebiwanvu ebibiri okusobola okutegeera okuliisa ebigulumivu ebibuguma, okwongera ku bulungibwansi bw’okuliisa, n’okufuula ekifo ky’ebbugumu eky’okusuula okubeera okutuufu. Oluvannyuma lw’okulongoosa, sprue y’enkola ya gating eri mm 60×60 mm, sprue eri mm 60×50, ate sprue ey’omunda eri mm 50×40 mm. Ekibinja ky’ekyokulabirako kirina layeri ssatu, era ebanga wakati wa buli layeri liri mm 60.
2.1.2 Okufuga obulema .
1) Ku lw’okuyingiza mu ssala n’omusenyu, ffeesi y’okusuula ekola ejja kuba wansi mu ludda lw’ekifo ky’okuyiwa okukakasa omutindo gwa ffeesi ekola; Okukozesa ekibinja ekiri ebweru w’ekibokisi, okukakasa ekyokulabirako ekiziyiza empewo okuyingira oluvannyuma lw’okusiiga, okuziyiza ebitundu ebinafu eby’okusiigibwa ebizigo ebiva ku ssalaasi y’okusiiga ebiyungo ebikalu, obulema bw’omutego gw’omusenyu; Ekikopo kya foam sprue kikozesebwa. Bw’oba osiiga, ekikopo kya sprue kiddemu okusiimuula. Bw’oziika bbokisi, omusenyu gwa resin guteekebwa ku bbali w’ekikopo kya sprue okukakasa amaanyi g’ekikopo kya sprue, okusobola okufuga akakwate akaliwo wakati w’ekikopo kya sprue ne sprue.
2) Stomata .
Kyetaagisa okufuga ennyo okuva mu nsonga z’okuddukanya, okussa mu nkola enkola n’okulabirira n’okukebera okukakasa okukala okusiiga n’okuziyiza okukala kw’ekizigo. Ku kizibu nti ekikwekweto tekiba kya maanyi ekimala, ekkolero lyetaaga okutendeka abakozi n’abakozi abakwatagana nabo, olwo obuvunaanyizibwa ne buweebwa omuntu, okulabirira kuliwo, era buli link y’okufulumya ekwatibwa n’obwegendereza okuziyiza ensobi entono-eddaala okukosa omugaso okutwalira awamu ogw’ekyuma ekifumbirwa.
2.2 Ekikolwa ky’okukozesa .
Enteekateeka eyasooka ey’ekikuta ekyeru ereeta omuwendo omutono ogw’okukozesa omusenyu. Layers endala bbiri eza castings zisobola okuteekebwa mu ludda lw’obugulumivu okutuuka ku kuyiwa kwa 36 castings mu layers 3 eza 2 model clusters. Okusinziira ku ndowooza eno, engeri y’enkola y’okusuula obulungi (optimized casting process) ey’omuguwa gwa grate esobola okufunibwa, era ekifaananyi ky’ekibinja ky’ekyokulabirako kiragibwa mu kifaananyi 5. Nga bwe kiyinza okulabibwa okuva mu kifaananyi 5, oluvannyuma lw’okulongoosa enkola, ebintu ebisingawo bisobola okuyiwa okuva ku kikomera ekimu, obulungi bw’okufulumya bwongerwako emirundi 3, era n’omuwendo gukendeera. Mu nkola y’okukola ekitundu ekitono, obulema bw’okussaamu ebikuta n’omusenyu eby’okusuula bifugibwa bulungi, era omuwendo gw’okugaana ogw’okusuula guli wansi wa 5%. Mu kiseera kino, okufulumya ebitundutundu (batch production) kutegeerekese, enkola eno enywevu, tewali kituli kya kukendeera, buziba bwa kukendeera, slag, omusenyu n’obulema obulala buzuuliddwa oluvannyuma lw’okukola casting.
3 Okumaliriza .
1) Nga tulongoosa enkola y’okusuula, obulungi bw’okufulumya CASTING bulongoosebwa bulungi era n’omuwendo gw’okufulumya gukendeera.
2) Okukaza n’okusiiga enjeru n’okusiiga kikulu nnyo, kiteekwa okuba nga kikalu, okwewala obulema obuva ku mukka gw’amazzi.
3) Okubumba ebweru w’ekibokisi kuyinza okwewala ekikyamu olw’okwonooneka kw’ekifo ekikwatagana n’omusenyu. Enkola y’okusuula eyinza okubeera ennywevu ennyo nga etereeza ekifo ky’okuyiwamu okusuula n’okulongoosa mu ngeri ey’amagezi eky’okuyiwa okusuula.
4) Enkola erongooseddwa ekoleddwa era n’etumbulwa mu kkolero, era okufulumya mu bungi kukakasizza nti enkola eno erina omulimu omunywevu n’omutindo gw’ebintu ogwesigika.
