SU369972A1 - WAY OF FREEZING SANDY FOR / L - Google Patents

WAY OF FREEZING SANDY FOR / L

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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
Application number
SU1730674A
Other languages
Russian (ru)
Inventor
С. П. Бочаров В. М. Грузман
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to SU1730674A priority Critical patent/SU369972A1/en
Application granted granted Critical
Publication of SU369972A1 publication Critical patent/SU369972A1/en

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  • 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)

1.Способ замораживани  песчаных форм, преимущественно литейных, включающий охлаждение форм до минусовой температуры по С°, отличающийс  тем, что, с целью повыщени  скорости замораживани , до охлаждени  форму заполн ют газом, имеющим теплопроводность большую, чем теплопроводность1. A method of freezing sand molds, preferably foundry ones, including cooling the mold to a minus temperature in C, characterized in that, in order to increase the freezing speed, before cooling, the mold is filled with a gas having a thermal conductivity greater than that of heat воздуха.of air. 2.Способ по п. 1, отличающийс  тем, что, форму заполн ют гелием.2. A method according to claim 1, characterized in that the form is filled with helium. ss лl ж.g.
SU1730674A 1971-12-29 1971-12-29 WAY OF FREEZING SANDY FOR / L SU369972A1 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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