SU140958A1 - Method of making permanent casting molds - Google Patents
Method of making permanent casting moldsInfo
- Publication number
- SU140958A1 SU140958A1 SU682855A SU682855A SU140958A1 SU 140958 A1 SU140958 A1 SU 140958A1 SU 682855 A SU682855 A SU 682855A SU 682855 A SU682855 A SU 682855A SU 140958 A1 SU140958 A1 SU 140958A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- asbestos
- casting molds
- making permanent
- permanent casting
- mixture
- Prior art date
Links
Landscapes
- Mold Materials And Core Materials (AREA)
Description
Известны способы обработки рабочих полостей литейных форм тонкими асбестовыми листами. Кроме того, известно применение асбестовых форм, получаемых прессованием по модел м из смеси асбеста с графито-алебастровой массой. Однако известные способы изготовлени литейных форм не обеспечивают требуемых технологических свойств.Known methods of processing the working cavities of the molds with thin asbestos sheets. In addition, it is known the use of asbestos forms, obtained by pressing on models of a mixture of asbestos with a graphite-alabaster mass. However, the known methods for making casting molds do not provide the required technological properties.
Особенность насто щего изобретени заключаетс в том, ч го, а целью снижени теплопроводности материала формы, в смесь дл изготовлени литейных форм ввод т до 35% порошка асбеста, остальное - железный порошок.A feature of the present invention is that, in order to reduce the thermal conductivity of the mold material, up to 35% of asbestos powder is introduced into the mixture for the manufacture of casting molds, the rest is iron powder.
Описываемый способ заключаетс в том, что изготовл етс модель отливки, котора затем, вл сь пуансоном, вдавливаетс в стакан-матрицу , наполненную смесью порошков железа и асбеста. В качестве основной составл ющей асбестожелезной порошкообразной массы беретс железный порошок Сулинского завода арки А с зерном 125-150 мк, к которому добавл етс асбестовый rioponioK с крупностью зерна 180-315 мк, получаемый из тонкого асбестового картона марки А.The described method consists in producing a casting model, which then, being a punch, is pressed into a glass matrix filled with a mixture of iron powders and asbestos. As the main component of the asbestos-iron powder mass, the iron powder of the Sulinsky arch plant A with a grain of 125-150 microns is added, to which is added an asbestos rioponioK with a grain size of 180-315 microns, obtained from thin asbestos cardboard of mark A.
Спекание формы производитс при 1150° в течение 2 час без доступа воздуха. После спекани пористость литейных форм составл ет 15-25%.The sintering of the mold is carried out at 1150 ° for 2 hours without air access. After sintering, the porosity of the casting molds is 15-25%.
Чугунное литье, получаемое с применением асбестожелезных литейных форм, не требует графитизирующего отжига. Предлагаемый способ позвол ет отказатьс от дорогосто щего и трудоемкого изготовлени кокилей и устранить отбел чугунных отливок. Так, при содержании асбеста в материале формы до 25% глубина отбеленного сло на отливках снижалась до 0,5-0,8 мм (обычно 3-6 мм, а при содержании асбеста до 35% отбел отсутствовал.Iron casting produced using asbestos-iron casting molds does not require graphitizing annealing. The proposed method makes it possible to refuse expensive and time-consuming manufacture of chill molds and eliminate chill iron castings. So, with the asbestos content in the mold material up to 25%, the depth of the bleached layer on the castings was reduced to 0.5-0.8 mm (usually 3-6 mm, and when the asbestos content was up to 35%, there was no chill.
Полезность предложени подтверждаетс Научно-исследовательским институтом технологии п машиностроени .The usefulness of the proposal is confirmed by the Research Institute of Technology and Mechanical Engineering.
№ 140958 - 2 Предмет изобретени No. 140958 - 2 The subject invention
Способ изготовлени ; лосто нных литейных форм из асбестовой смеси путем в.давлива1ни модели в наполиенную смесью матрицу с последующим спекаиием смеси, отличающийс тем, что, с целью снижени теплопроводности материала формы, в смесь ввод т до порошка асбеста и остальное - железный порошок.Manufacturing method; baked molds from an asbestos mixture by pressing a model into a matrix filled with a mixture followed by sintering the mixture, characterized in that, in order to reduce the thermal conductivity of the mold material, the mixture is injected into asbestos powder and the rest is iron powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU682855A SU140958A1 (en) | 1960-10-19 | 1960-10-19 | Method of making permanent casting molds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU682855A SU140958A1 (en) | 1960-10-19 | 1960-10-19 | Method of making permanent casting molds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU140958A1 true SU140958A1 (en) | 1960-11-30 |
Family
ID=48296934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU682855A SU140958A1 (en) | 1960-10-19 | 1960-10-19 | Method of making permanent casting molds |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU140958A1 (en) |
-
1960
- 1960-10-19 SU SU682855A patent/SU140958A1/en active
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