SU151774A1 - Method of making molds from liquid molding compositions - Google Patents

Method of making molds from liquid molding compositions

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Publication number
SU151774A1
SU151774A1 SU745371A SU745371A SU151774A1 SU 151774 A1 SU151774 A1 SU 151774A1 SU 745371 A SU745371 A SU 745371A SU 745371 A SU745371 A SU 745371A SU 151774 A1 SU151774 A1 SU 151774A1
Authority
SU
USSR - Soviet Union
Prior art keywords
molding compositions
mold
liquid molding
making molds
model
Prior art date
Application number
SU745371A
Other languages
Russian (ru)
Inventor
В.С. Радшун
Original Assignee
В.С. Радшун
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 by В.С. Радшун filed Critical В.С. Радшун
Priority to SU745371A priority Critical patent/SU151774A1/en
Application granted granted Critical
Publication of SU151774A1 publication Critical patent/SU151774A1/en

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Description

Известные способы изготовлени  форм из жидких формовочных составов , например гипса в опоке, продолжительны и требуют расхода большого количества дорогосто щих керамических и гипсовых материалов . Кроме того, эти способы трудоемки. Так, дл  создани  газопроницаемости форМ требуетс  продолжительна  обработка их в автоклаве.Known methods for making molds from liquid molding compositions, such as gypsum in a flask, are long and require the consumption of a large amount of expensive ceramic and gypsum materials. In addition, these methods are laborious. Thus, in order to create a gas permeability of the molds, it is necessary to prolong them in an autoclave.

Описываемый способ позвол ет сократить цикл сушки форм и увеличить их газопроницаемость. Достигаетс  это тем, что залитый в опоку формовочный состав выдавливают предварительно изготовленной полуформой , котора  остаетс  в опоке дл  образовани  монолитной полуформы . При -выдавливании на модели образуетс  облицовочный слой.The described method allows to shorten the drying cycle of the forms and increase their gas permeability. This is achieved by the fact that the molding composition poured into the mold is extruded with a prefabricated half-mold, which remains in the flask to form a monolithic half-mold. On-extrusion, a facing layer is formed on the model.

На фиг. 1, 2, 3, 4 и 5 дана технологическа  схема дд  осуществлени  предлагаемого способа.FIG. 1, 2, 3, 4 and 5 are given a flow chart for the implementation of the proposed method.

На модельную плиту / устанавливают и закрепл ют модель 2 л опоку 3. Л1одель смазывают разделительной смазкой- В опоку (фиг. 2) заливают раствор 4, приготовленный по известной технологии, в количестве , необходимом дл  образовани  .облицовочного сло  толщ-иной 2- 3 мм. Затем в опоку ввод т предварительно изготовленную сухую полуформу 5 (фиг. 3). Этой полуформой выжимают жидкий раствор 4, которым обволакиваетс  вс  поверхность модели равномерным тонким облицовочным слоем (фиг. 4). После затвердевани  раствора модель извлекают , а полуформу освобождают от опоки (фиг. 5).A 2-liter model is installed and fixed on the model plate / model 3 on the model plate. The model is lubricated with a release agent. In the container (Fig. 2), the solution 4, prepared according to a known technology, is poured in the amount necessary to form a facing layer 2-2 different mm Then, a prefabricated dry half mold 5 (Fig. 3) is introduced into the mold. This half-form is used to squeeze the liquid solution 4, which envelops the entire surface of the model with a uniform thin facing layer (Fig. 4). After solidification of the solution, the model is removed, and the half-form is freed from flask (Fig. 5).

В результате такой обработки получают полуформу, у которой облицовочный слой выполнен из состава, примен емого дл  изготовлени  керамической или гипсовой формы, а наполнительный слой - из обычной, предварительно прокаленной песчаной смеси на жидком стекле. Аналогичным способом изготовл етс  втора  полуформа.As a result of this treatment, a semi-form is obtained in which the facing layer is made of a composition used to make a ceramic or plaster mold, and the filling layer is made of a conventional, pre-calcined sand mixture on liquid glass. A second mold is made in a similar manner.

Форма, изготовленна  по описанному способу, обладает большей газопроницаемостью, чем монолитна  гипсова  форма. Кроме того, тонкий гипсовый слой требует меньше времени дл  просушки.The form made by the described method has a higher gas permeability than the monolithic gypsum form. In addition, a thin plaster layer takes less time to dry.

№ 151774 Предмет изобре-тени № 151774 Shadow Image Object

Способ изготовлени  форм из жидких формовочных составов, например гипса, в олоке, отличающийс  тем, что, с целью сокращени  цикла -сушки форм, и увеличени  Их газопроницаемости, залитый в опоку формовочный состав выдавливают с образованием на модели облицовочного сло  предварительно изготовленной полуформой, котора  остаетс  в опоке дл  образовани  монолитной полуформы.A method of making molds from liquid molding compositions, for example gypsum, in oloka, characterized in that, in order to shorten the drying cycle, and to increase their gas permeability, the molding composition poured into the mold is extruded to form a pre-made half-mold on the facing layer model that remains in a flask to form a monolithic half-mold.

- 2 - 2

&Ж.4 На CTjj. 2 е строке следует читать изготовленной сухой полуфоркой.& F.4 On CTjj. 2nd line should be read with a dry semi-finished product.

ОПЕЧАТКА PRINT

SU745371A 1961-09-19 1961-09-19 Method of making molds from liquid molding compositions SU151774A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU745371A SU151774A1 (en) 1961-09-19 1961-09-19 Method of making molds from liquid molding compositions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU745371A SU151774A1 (en) 1961-09-19 1961-09-19 Method of making molds from liquid molding compositions

Publications (1)

Publication Number Publication Date
SU151774A1 true SU151774A1 (en) 1961-11-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU745371A SU151774A1 (en) 1961-09-19 1961-09-19 Method of making molds from liquid molding compositions

Country Status (1)

Country Link
SU (1) SU151774A1 (en)

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