SU369972A1 - WAY OF FREEZING SANDY FOR / L - Google Patents
WAY OF FREEZING SANDY FOR / LInfo
- Publication number
- SU369972A1 SU369972A1 SU1730674A SU1730674A SU369972A1 SU 369972 A1 SU369972 A1 SU 369972A1 SU 1730674 A SU1730674 A SU 1730674A SU 1730674 A SU1730674 A SU 1730674A SU 369972 A1 SU369972 A1 SU 369972A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- freezing
- mold
- sandy
- way
- thermal conductivity
- Prior art date
Links
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
1one
Изобретение относитс к литейно,му производству , в частности к изготовлению литейных форм за мораживанием.The invention relates to foundry, mu production, in particular to the manufacture of casting molds for freezing.
Известен способ зaмopaiживaни песчаных форм, включающий охлаждение форм до минусовой температуры по С°. При этом воздух, заполн ющий поры формы, вл етс плохим проводником тепла, т. е. имеет низкий коэффициент теплопроводимости. что замедл ет скорость замораживани формы.There is a method of sandy sand molds, which includes cooling the forms to minus temperatures in С °. At the same time, the air filling the pores of the mold is a poor conductor of heat, i.e., it has a low thermal conductivity coefficient. which slows down the freezing rate of the mold.
С целью повышени скорости замораживади до охлаждени , форму заполн ют газом , имеющим большую теплопроводимость, чем теплопроводимость воздуха.In order to increase the speed of freezing before cooling, the mold is filled with a gas having a higher thermal conductivity than the thermal conductivity of air.
На чертеже изображен возможный вариант использовани описываемого способа.The drawing shows a possible use of the described method.
На модель / устанавливают опоку 2, заполн ют ее формовочной смесью 3 и уплотн ют смесь каким-либо известным способом. После уплотнени опока со смесью покрываетс герметнЧНым кол.паком 4, снабженным патрубком 5 с вентилем 6 дл отсоса и подачи воздуха и патрубком 7 с вентилем 8 дл подачи гели . Открывают вентиль 6 и через патрубок отсасывают воздух. Затем закрывают вентиль 6, открывают вентиль 8 и через патрубок 7 подают гелий. Так как теплопроводность гели больше теплопроводности воздуха , то соответственно повыситс и эффективна теплопроводность формы, и процесс замораживани ускоритс .The model / is fitted with the mold 2, is filled with its molding sand 3, and the mixture is compacted by any known method. After compaction, the flask with the mixture is covered with a sealing kolpak 4, equipped with a pipe 5 with a valve 6 for suction and air supply and a pipe 7 with a valve 8 for feeding gels. The valve 6 is opened and air is sucked through the nozzle. Then the valve 6 is closed, the valve 8 is opened and helium is fed through the pipe 7. Since the thermal conductivity of the gel is greater than the thermal conductivity of air, the thermal conductivity of the mold increases accordingly and the freezing process is accelerated.
Предмет изобретени Subject invention
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1730674A SU369972A1 (en) | 1971-12-29 | 1971-12-29 | WAY OF FREEZING SANDY FOR / L |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1730674A SU369972A1 (en) | 1971-12-29 | 1971-12-29 | WAY OF FREEZING SANDY FOR / L |
Publications (1)
Publication Number | Publication Date |
---|---|
SU369972A1 true SU369972A1 (en) | 1973-02-15 |
Family
ID=20497932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1730674A SU369972A1 (en) | 1971-12-29 | 1971-12-29 | WAY OF FREEZING SANDY FOR / L |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU369972A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4326578A (en) * | 1979-02-16 | 1982-04-27 | Instytut Odlewnictwa | Method for making foundry moulds and cores |
WO1990013374A1 (en) * | 1989-05-01 | 1990-11-15 | Alcan International Limited | Shape casting in mouldable media |
-
1971
- 1971-12-29 SU SU1730674A patent/SU369972A1/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4326578A (en) * | 1979-02-16 | 1982-04-27 | Instytut Odlewnictwa | Method for making foundry moulds and cores |
WO1990013374A1 (en) * | 1989-05-01 | 1990-11-15 | Alcan International Limited | Shape casting in mouldable media |
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