SU399291A1 - METHOD OF MANUFACTURING A CERAMIC FORM IN THE MANUFACTURE OF CASTING ON CONSTANT AND MOLDED MODELS - Google Patents
METHOD OF MANUFACTURING A CERAMIC FORM IN THE MANUFACTURE OF CASTING ON CONSTANT AND MOLDED MODELSInfo
- Publication number
- SU399291A1 SU399291A1 SU1720022A SU1720022A SU399291A1 SU 399291 A1 SU399291 A1 SU 399291A1 SU 1720022 A SU1720022 A SU 1720022A SU 1720022 A SU1720022 A SU 1720022A SU 399291 A1 SU399291 A1 SU 399291A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- casting
- manufacturing
- manufacture
- constant
- mold
- Prior art date
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- Mold Materials And Core Materials (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
1one
Изобретение относитс к литейному производству , в частности к технологии получени керамических форм и стержней.The invention relates to foundry, in particular, to the technology for producing ceramic molds and cores.
Известен способ изготовлени керамической формы в производстве лить по посто нным и выплавл емым модел м, состо щий в том, что на модель нанос т огнеупорное нокрытие, удал ют модель из формы с последующим выжиганием спирта, введенного в этилсиликат при гидролизе. Однако известный способ изготовлени керамической формы отличаетс тем, что при выгорании растворител форма быстро нагреваетс выще температуры деструкции св зующего этилсиликата, что снижает прочность керамической формы.A known method of making a ceramic mold in a casting production according to permanent and melted models, is that a refractory coating is applied to the model, the model is removed from the mold, followed by burning off the alcohol introduced into the ethyl silicate during hydrolysis. However, the known method of making a ceramic mold is characterized in that when the solvent is burned out, the mold quickly heats up above the degradation temperature of the binder ethyl silicate, which reduces the strength of the ceramic mold.
Цель предлагаемого изобретени - повыщение прочности керамической формы.The purpose of the present invention is to increase the strength of the ceramic mold.
Дл этого форму или стержень, изготовленные из смесей с органическим растворителем перед их поджиганием покрывают проницаемым дл паров растворител материалом , например, сетчатой стеклотканью с размером отверстий 1-2 мм. Обжиг ведут уже над поверхностью материала, проницаемого дл паров растворител и непроницаемого дл пламени. В процессе выгорани растворител форма, с нанесенным на нее теплоизолирующим слоем из пористого материала, независимо от коэффициента теплопроводности этого материала, прогреваетс до температуры не выше 200°С, т. е. температуры, не превышающей температуру деструкции св зующего - этилсиликата, что приводит к наиболее полному использованию его св зующей способности и значительному увеличению прочности формы.For this, a mold or rod made from mixtures with an organic solvent is covered with a vapor-permeable solvent, for example, with mesh fabric with a hole size of 1-2 mm, prior to ignition. The firing is carried out already above the surface of the material, permeable to solvent vapor and impermeable to flame. In the process of burning out the solvent form, a heat-insulating layer of porous material deposited on it, regardless of the thermal conductivity of this material, is heated to a temperature not higher than 200 ° C, i.e. a temperature not exceeding the degradation temperature of the binder ethyl silicate, which leads to the most complete use of its binding capacity and a significant increase in the strength of the form.
Прочность керамической формы или стержн повышаетс на 30-50% при соответствующем снижении расхода св зующего - этилсиликата.The strength of the ceramic mold or rod is increased by 30-50% with a corresponding reduction in the consumption of the binder ethyl silicate.
Предмет изобретени Subject invention
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1720022A SU399291A1 (en) | 1971-12-01 | 1971-12-01 | METHOD OF MANUFACTURING A CERAMIC FORM IN THE MANUFACTURE OF CASTING ON CONSTANT AND MOLDED MODELS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1720022A SU399291A1 (en) | 1971-12-01 | 1971-12-01 | METHOD OF MANUFACTURING A CERAMIC FORM IN THE MANUFACTURE OF CASTING ON CONSTANT AND MOLDED MODELS |
Publications (1)
Publication Number | Publication Date |
---|---|
SU399291A1 true SU399291A1 (en) | 1973-10-03 |
Family
ID=20494731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1720022A SU399291A1 (en) | 1971-12-01 | 1971-12-01 | METHOD OF MANUFACTURING A CERAMIC FORM IN THE MANUFACTURE OF CASTING ON CONSTANT AND MOLDED MODELS |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU399291A1 (en) |
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1971
- 1971-12-01 SU SU1720022A patent/SU399291A1/en active
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