FIELD: manufacture of complex-shape castings with use of investment patterns.
SUBSTANCE: method comprises steps of placing core of water soluble salt into press-mold; fixing core by means of marks and supporting insertion piece in order to prevent its damage; in order to eliminate cracking and shrinkage of pattern, fastening metallic inserts in press-mold for forming voids in thickened zones of pattern; pressing-in to press-mold pattern composition; extracting pattern out of press-mold together with insert and supporting insertion piece; then removing insert and insertion piece from pattern; closing holes after insert with pattern composition; closing void formed in pattern after removal of insert by means of plug; assembling patterns to unit; washing pattern unit and applying ceramic coating; forming openings in envelope in zones spaced from pouring basin for discharging pattern mass at melting it.
EFFECT: improved quality of castings, lowered labor consumption of process.
4 cl, 13 dwg, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF MANUFACTURE OF CERAMIC SHELL FOR CASTING WITH NARROW DEVELOPED INNER SPACES IN PROCESS OF CASING TO MODELS | 2005 |
|
RU2277452C1 |
| METHOD FOR MANUFACTURING OF CENTRIFUGAL PUMP IMPELLER STEEL CASTING | 2019 |
|
RU2733963C2 |
| CERAMIC MULTIPLE CASTING MOLD | 1990 |
|
RU2017562C1 |
| 0 |
|
SU1567316A1 | |
| METHOD OF MAKING CERAMIC MOULD TO SINGLE MODEL | 0 |
|
SU1093385A1 |
| METHOD OF MANUFACTURING SEGMENTARY INSERTS OF TWO-PLY SHELL OF COMBUSTION CAN AND CASTING MOLD THEREFOR | 0 |
|
SU1774894A3 |
| SPRUE FOR MOULDING BY MOULDED-OUT MODELS | 0 |
|
SU1748917A1 |
| ELECTROMAGNETIC FORM-INVESTMENT-PATTERN CASTING | 2008 |
|
RU2402405C2 |
| MANUFACTURING METHOD OF CASTS AS PER MOLTEN OUT MODELS | 2013 |
|
RU2532750C1 |
| METHOD FOR PRODUCTION OF FOUNDRY GOODS AND DEVICE FOR ITS REALISATION | 2007 |
|
RU2371278C2 |
