Sand casting: Abaanyɛ aja ŋã ni afɔɔ nitsumɔ yɛ valve nitsumɔhe lɛ hu mli awo ŋã henɔi srɔtoi tamɔ .ŋã ni efɔ, ŋã ni egbi, nu glase ŋã kɛ furan resin ŋã ni ashãaataakɛ binders srɔtoi lɛ tsɔɔ lɛ.
(1) Green sand ji gbɛ ni atsɔɔ nɔ afeɔ nibii ni akɛ bentonite tsuɔ nii akɛ nɔ ni akɛfiɔ nibii ahe yɛ nitsumɔ lɛ mli. Ehe sui ji: ehe ehiaaa ni agbi ŋã ni agbe naa lɛ mli loo afee lɛ tsofa krɛdɛɛ ko ni haa ewaa, ŋã lɛ yɛ hewalɛ ko ni mli efɔ, ni ŋã lɛ mli kɛ ŋã lɛ shishigbɛ lɛ yɛ hegbɛi ni hi fe tsutsu lɛ, ni no ji nɔ ni hi kɛha ŋã ni ajieɔ kɛjɛɔ mli ni ajieɔ kɛjɛɔ mli kɛ ŋã ni shwieɔ shi lɛ. Nibii ni akɛwoɔ tsɔne mli lɛ ahe nitsumɔ mli hewalɛwoo lɛ fa, nifeemɔ be lɛ faaa, ni nibii ni akɛtsuɔ nii lɛ ahe nyɔmɔwoo hu faaa, ni enɛ hi jogbaŋŋ kɛha tsɔne ni akɛbuaa nibii anaa lɛ he gbɛjianɔtoo. Ehe naagbai ji: ŋã ni akɛwoɔ mli lɛ baanyɛ afee nɔ ni ehiii tamɔ ŋmeii, ŋã ni akɛwoɔ mli, kɛ ŋã ni shwieɔ shi, ni ŋã ni akɛwoɔ mli lɛ mlihilɛ, titri lɛ mligbɛ su lɛ, kɛ nɔ ni fa bɔ ni sa.
(2) Ŋã ni egbi ji gbɛ ni atsɔɔ nɔ afeɔ mfoniri ni akɛ shikpɔŋ tsuɔ nii akɛ nɔ ni akɛfiɔ nii ahe, ni bentonite fioo ko baanyɛ aha ehewalɛ ni mli efɔ lɛ aya hiɛ. Esui ji: ehe miihia ni ŋã ni akɛfee ŋã lɛ agbi, eyɛ kɔɔyɔɔ ni hi jogbaŋŋ kɛ kɔɔyɔɔ ni gbɛɔ eshwaa, ebɛ mlɛo akɛ ebaaha tɔmɔi tamɔ ŋã ni akɛfɔ̃ɔ, ŋã ni akɛkpɛtɛɔ he, kɛ ŋã ni shwieɔ shi lɛ aba, ni ŋã ni akɛwoɔ mli lɛ mli hu hi jogbaŋŋ. Ehe naagbai ji: ehe miihia ni akɛ nibii ni akɛgbiɔ ŋã, ni be ni akɛfeɔ lɛ sɛɛ tsɛɔ waa.
(3) Sodium silicate ŋã ji gbɛ ni atsɔɔ nɔ afeɔ ŋã ni akɛ nu glase tsuɔ nii akɛ nɔ ni akɛfiɔ ŋã he. E su ji: nu glase ɔ ngɛ ní tsumi nɛ ji kaa e ma nyɛ maa pee nɔ́ nɛ e wa e he kɛ ha CO2, nɛ e ma nyɛ maa ná sɛɛnamɔhi slɔɔtoslɔɔtohi kɛ sɛɛnamɔhi nɛ ngɛ gas hardening modeling kɛ core making he. Shi kɛlɛ, naagbai komɛi yɛ tamɔ ŋmeii ni nyɛɛɛ agbee shi jogbaŋŋ, ŋã ni akɛshwieɔ ŋã nɔ lɛ he saamɔ ni wa, kɛ ŋã ni akɛtsu nii lɛ ni akɛtsuɔ nii ekoŋŋ lɛ ni baa shi.
(4) Furan resin ni akɛshãaa ŋã lɛ ji gbɛ ni atsɔɔ nɔ ashwieɔ ŋã ni akɛ furan resin tsuɔ nii akɛ nɔ ni akɛfiɔ nii ahe. Yɛ shĩa mli latsaa mli lɛ, ŋã ni akɛfee lɛ lɛ tsaa yɛ tsofa ni haa ŋã ni akɛfee ŋã lɛ tsuɔ nii yɛ nɔ ni haa ŋã lɛ tsuɔ nii lɛ shishi lɛ hewɔ. Ehe nibii ji: ehe ehiaaa ni agbi ŋã ni akɛfee lɛ, ni no haa be ni akɛfeɔ nii lɛ feɔ kuku waa, ni ehaa hewalɛ hu baa shi. Resin ŋã ni akɛfee ŋã lɛ ji nɔ ko ni yɔɔ mlɛo akɛ aaabɔ he ni eyɛ gbeekpamɔ kpakpa, ni abaanyɛ atsumɔ ŋã ni akɛfee ŋã ni akɛfee ŋã lɛ hu he mlɛo, ŋã ni akɛfee ŋã lɛ dalɛ jalɛsaneyeli lɛ nɔ kwɔ, ni nɔ ni akɛfee lɛ nɔ lɛ hu hi, ni baanyɛ aha ŋã ni akɛfee ŋã lɛ aya hiɛ waa. Ehe naagbai ji: nɔ ni ataoɔ kɛha ŋã ni afeee lɛ jogbaŋŋ lɛ hu fa babaoo, he ni afeɔ lɛ yɛ lɛ he ŋmɔlɔ ni haa mɔ mli fuɔ fioo, ni ŋã ni akɛwoɔ mli lɛ hu jara wa. Furan resin ŋã ni haa ehe wa lɛ futumɔ gbɛ: Ehi jogbaŋŋ akɛ ŋã ni haa ehe wa lɛ ji nɔ ni akɛfutuɔ ŋã ni yaa nɔ, ni akɛ ŋã ni afee lɛ ŋmɔŋ, ŋã, tsofa ni haa mɔ he waa, kɛ ekrokomɛi fataa he yɛ be kroko mli, ni akɛfutuɔ amɛ oya. Futumɔ ni okɛtsu nii be fɛɛ be. 120-180S) – ŋã + silane – (60-90S) – ŋã (5) ŋã henɔ ni afɔɔ namɔ.
Be ni akɛmajeɔ: Manyawale-17-2022
