SU660773A1 - Ceramic mould roasting method - Google Patents

Ceramic mould roasting method

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Publication number
SU660773A1
SU660773A1 SU772516979A SU2516979A SU660773A1 SU 660773 A1 SU660773 A1 SU 660773A1 SU 772516979 A SU772516979 A SU 772516979A SU 2516979 A SU2516979 A SU 2516979A SU 660773 A1 SU660773 A1 SU 660773A1
Authority
SU
USSR - Soviet Union
Prior art keywords
roasting method
ceramic mould
calcination
temperature
molds
Prior art date
Application number
SU772516979A
Other languages
Russian (ru)
Inventor
Николай Дмитриевич Масленников
Николай Васильевич Шипулин
Борис Абрамович Кириевский
Владимир Иванович Чижов
Альберт Иванович Журавлев
Original Assignee
Институт Проблем Литья Ан Украинской Сср
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 Институт Проблем Литья Ан Украинской Сср filed Critical Институт Проблем Литья Ан Украинской Сср
Priority to SU772516979A priority Critical patent/SU660773A1/en
Application granted granted Critical
Publication of SU660773A1 publication Critical patent/SU660773A1/en

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Description

(54) СПОСОБ ПРОКАЛИВАНИЯ КЕРАЮГЧЕСКИХ ФОРМ(54) METHOD OF CLEANING CERAUGUAL FORMS

1one

Изобретение относитс  к литейному производству, а именно к способам прокаливани  кергилических оболочкоBfcoc форм лить  по вьшлавл емым модел м .The invention relates to foundry, and in particular to methods of calcining kergilic shells of Bfcoc casting forms according to the famous models.

Известен способ прокаливани  керамических форм, полученных по выплавл емьв4 модел м, при котором с цех лью снижени  температуры прокаливани  и увеличени  прочности форм нагрев их производ т в вакууме l. однако по этому способу увеличиваетс  выдержка форм при нагреве.There is a known method of calcining ceramic molds obtained by melting in 4 models, in which they are heated in a vacuum l in a shop that lowers the calcination temperature and increases the strength of the molds. however, this method increases the shutter speed during heating.

наиболее близким к предложенно- му способу прокалки по технической сущности и достигаемому результату  вл етс  способ прокаливани  керамических форм, по которому форму нагревают до 550-600°С в течение 0,5-1,0 час, производ т выдержку и одновременный обдув кислородосодержащим газом и последук цее вакуумирование камеры печи 2. И по этому способу процесс прокаливани  длителен и неудобен дл  механизации.The closest to the proposed method of calcining to the technical essence and the achieved result is the method of calcining ceramic molds, according to which the mold is heated to 550-600 ° C for 0.5-1.0 hours, and holding and simultaneously blowing in oxygen-containing gas and subsequent vacuuming of the furnace chamber 2. In this method, the calcination process is long and inconvenient for mechanization.

Целью изобретени   вл етс  уменьшение длительности прокаливани  и улучшение условий механизации прока ливани  керамических лить , полученных по выплавл емы модел м.The aim of the invention is to reduce the duration of calcination and improve the conditions for the mechanization of the calcination of ceramic castings obtained by melting models.

22

Эта цель достигаетс  тем, что после предварительной выдержки форм при 550-600с в течение 1,2-1,5 час, температуру прокаливани  повышают до 870-900с и при этой температуре выдерживают в течение 1,2-. 1,5 час.This goal is achieved by the fact that after pre-exposure of the forms at 550-600s for 1.2-1.5 hours, the calcination temperature is raised to 870-900s and maintained at this temperature for 1.2-. 1.5 hours

Процесс прокаливани  форм состоит в следуквдем.The process of calcining the molds is as follows.

Оболочковые керамические формы с наполнителем помещают в печь с температурой в печи около 600°С. Форма прогреваетс  до этой температуры . В период выдержки форм (0,51 час) при 550-600°С осуществл етс  приток воздушной смеси на поверхнос- ти форм. Происходит интенсивное горение продуктов модельного состава.Shell ceramic forms with a filler are placed in a furnace with a furnace temperature of about 600 ° C. The mold is heated to this temperature. During the period of exposure of the molds (0.51 hours) at 550-600 ° C, an air mixture flows on the surface of the molds. There is an intense burning of the products of the model composition.

Увеличение температуры предварительной выдержки более нежелательно , так как это приводит к увеличению окислени  всех металлических деталей, наход щихс  в полости печи.An increase in the pre-exposure temperature is no longer desirable, since it leads to an increase in the oxidation of all the metal parts in the cavity of the furnace.

При уменьшении температуры предварительной выдержки в печи ниже 550600°С существенно увеличиваетс  врем  выдержки.As the temperature of the pre-exposure in the furnace drops below 550600 ° C, the holding time increases significantly.

Выдержка при 550-600 С менее 30 мин не обеспечивает полное сгорание остатков модельного состава. Выдержка в течение более 1 час приводит к увеличению времени прокаливани  без улучшени  качества прокаливани .Exposure at 550-600 C for less than 30 minutes does not ensure complete combustion of residues of the model composition. Aging for more than 1 hour increases the calcination time without improving the quality of calcination.

Claims (2)

1.Авторское свидетельство СССР № 270195, кл. В 22 С 9/00, 1967.1. USSR author's certificate number 270195, cl. B 22 C 9/00, 1967. 2.Авторское свидетельство CCCI № 555970, кл. В 22 С 9/04, 1975.2. Certificate of CCCI No. 555970, cl. B 22 C 9/04, 1975.
SU772516979A 1977-06-20 1977-06-20 Ceramic mould roasting method SU660773A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU772516979A SU660773A1 (en) 1977-06-20 1977-06-20 Ceramic mould roasting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU772516979A SU660773A1 (en) 1977-06-20 1977-06-20 Ceramic mould roasting method

Publications (1)

Publication Number Publication Date
SU660773A1 true SU660773A1 (en) 1979-05-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU772516979A SU660773A1 (en) 1977-06-20 1977-06-20 Ceramic mould roasting method

Country Status (1)

Country Link
SU (1) SU660773A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101811175A (en) * 2010-04-30 2010-08-25 哈尔滨工业大学 Method of roasting profiled shell for fine casting of titanium-based alloy investment pattern based on rapid prototyping

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101811175A (en) * 2010-04-30 2010-08-25 哈尔滨工业大学 Method of roasting profiled shell for fine casting of titanium-based alloy investment pattern based on rapid prototyping
CN101811175B (en) * 2010-04-30 2011-12-28 哈尔滨工业大学 Method of roasting profiled shell for fine casting of titanium-based alloy investment pattern based on rapid prototyping

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