JPS6434540A - Method for discharging exhaust gas or lost-wax pattern - Google Patents
Method for discharging exhaust gas or lost-wax patternInfo
- Publication number
- JPS6434540A JPS6434540A JP62188851A JP18885187A JPS6434540A JP S6434540 A JPS6434540 A JP S6434540A JP 62188851 A JP62188851 A JP 62188851A JP 18885187 A JP18885187 A JP 18885187A JP S6434540 A JPS6434540 A JP S6434540A
- Authority
- JP
- Japan
- Prior art keywords
- lost
- wax pattern
- gas
- exhaust gas
- mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
PURPOSE:To rapidly and efficiently discharge generated exhaust gas into back sand and to surely prevent residual defect and carbon pickup by forming gas vent hole on coating surface at outer peripheral part of a lost-wax pattern. CONSTITUTION:The lost-wax pattern 1 formed into the prescribed shape with foam polystyrene, etc., is buried into back sand 4 to form the mold 5. At the time of casting, molten metal 6 is poured into the mold 5 under reduced pressure condition in the back sand 4. The lost-wax pattern 1 disappears with heat of the molten metal 6 poured in the mold 5 and a product having the same shape of the lost-wax pattern 1 is cast. Further, as the gas vent member 2 having the same material as the lost-wax pattern 1 also loses when the lost-wax pattern 1 loses, the gas vent hole 7 is formed on the coating layer 3 at the part fitting the gas vent member 2. Then, the exhaust gas of the polystyrene gas, etc., generated when the lost-wax pattern 1 disappears, is rapidly discharged into the back sand 4 from the gas exhaust hole 7 and the discharge of the exhaust gas is efficiently executed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62188851A JPS6434540A (en) | 1987-07-30 | 1987-07-30 | Method for discharging exhaust gas or lost-wax pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62188851A JPS6434540A (en) | 1987-07-30 | 1987-07-30 | Method for discharging exhaust gas or lost-wax pattern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6434540A true JPS6434540A (en) | 1989-02-06 |
Family
ID=16230950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62188851A Pending JPS6434540A (en) | 1987-07-30 | 1987-07-30 | Method for discharging exhaust gas or lost-wax pattern |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6434540A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0763417A1 (en) * | 1995-09-13 | 1997-03-19 | Toyota Jidosha Kabushiki Kaisha | Method and apparatus for determining thickness values and shapes of laminate layers of product |
| KR100615833B1 (en) * | 2004-08-31 | 2006-08-25 | 박영구 | Manufacturing method for high permeability investment casting mould |
-
1987
- 1987-07-30 JP JP62188851A patent/JPS6434540A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0763417A1 (en) * | 1995-09-13 | 1997-03-19 | Toyota Jidosha Kabushiki Kaisha | Method and apparatus for determining thickness values and shapes of laminate layers of product |
| KR100615833B1 (en) * | 2004-08-31 | 2006-08-25 | 박영구 | Manufacturing method for high permeability investment casting mould |
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