Large thin-wall precision casting machine case piece shell manufacturing technological method

The invention discloses a large thin-wall precision casting machine case piece shell manufacturing technological method. The method comprises the following steps that 1, wax mold pressing is performed, and an obtained wax mold is cleaned thoroughly; 2, a silica sol surface layer sizing agent and an...

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Bibliographic Details
Main Authors SHI CHANGKUN, DU YINGLIU, LIU ZHANGTAO, TAO YUANLIANG
Format Patent
LanguageChinese
English
Published 03.04.2020
Subjects
CASTING
FOUNDRY MOULDING
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
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Summary:The invention discloses a large thin-wall precision casting machine case piece shell manufacturing technological method. The method comprises the following steps that 1, wax mold pressing is performed, and an obtained wax mold is cleaned thoroughly; 2, a silica sol surface layer sizing agent and an ethyl silicate reinforcing sizing agent are prepared separately, repeated initial layer coating is performed sequentially on the thoroughly cleaned wax mold, after each coating, sanding is performed, sufficient drying is performed, and a preliminary mold shell model is manufactured; 3, dry sand is poured into the deep-groove portion of the obtained preliminary mold shell model, and a notch is blocked and sealed by the grouting sizing agent; 4, middle-layer coating and back-layer coating are performed in sequence on the mold shell obtained in step 3, and sanding and drying are performed after each coating to obtain a final mold shell model; 5, after dewaxing treatment is performed, high-temperature calcination is pe
Bibliography:Application Number: CN201911341673