RU93033689A - COOLING METHOD FOR GLASS FORMING TOOL - Google Patents

COOLING METHOD FOR GLASS FORMING TOOL

Info

Publication number
RU93033689A
RU93033689A RU93033689/33A RU93033689A RU93033689A RU 93033689 A RU93033689 A RU 93033689A RU 93033689/33 A RU93033689/33 A RU 93033689/33A RU 93033689 A RU93033689 A RU 93033689A RU 93033689 A RU93033689 A RU 93033689A
Authority
RU
Russia
Prior art keywords
forming tool
cavity
inert gas
cooling method
glass forming
Prior art date
Application number
RU93033689/33A
Other languages
Russian (ru)
Inventor
И.А. Горбань
Э.И. Шарипов
Original Assignee
Научно-производственная фирма "Форма"
Filing date
Publication date
Application filed by Научно-производственная фирма "Форма" filed Critical Научно-производственная фирма "Форма"
Priority to CZ943317A priority Critical patent/CZ281240B6/en
Priority to CZ94915A priority patent/CZ279920B6/en
Publication of RU93033689A publication Critical patent/RU93033689A/en

Links

Claims (1)

Способ охлаждения стеклоформующего инструмента заключается в следующем: полость формующего инструмента перед нагреванием продувают инертным газом, после чего ее вакуумируют до 1,35 10-2 Па при комнатной температуре, а нагревание ведут со скоростью 0,3 - 0,6 град/мин при сохранении заданного значения вакуума до около 650°С, перед подачей жидкого металла полость инструмента охлаждают до около 250°С и заполняют инертным газом под избыточным давлением около 0,1 105 Па, а подачу жидкого металла осуществляют в среду инертного газа и повышают его избыточное давление до около (0,3 - 0,5) 105 Па, затем, после охлаждения формующего инструмента до температур, близких к комнатной, его полость вакуумируют до давления 6, 65 10-3 Па и поддерживают необходимую температуру формующих поверхностей путем регулирования давления паров сплава K-Na в диапазоне от около 0,49 кПа до около 78 кПа.The method of cooling the glass-forming tool is as follows: the cavity of the forming tool is blown with an inert gas before heating, after which it is evacuated to 1.35 10 - 2 Pa at room temperature, and the heating is carried out at a speed of 0.3 - 0.6 deg / min while set the vacuum to about 650 ° C; before feeding the liquid metal, the tool cavity is cooled to about 250 ° C and filled with an inert gas under an overpressure of about 0.1 to 10 5 Pa; and the supply of the liquid metal is carried out into the inert gas medium and increases its excess pressure up to about (0.3 - 0.5) 10 5 Pa, then, after cooling the forming tool to temperatures close to room temperature, its cavity is evacuated to a pressure of 6, 65 10 - 3 Pa and maintain the required temperature of the forming surfaces by adjusting vapor pressure of the K-Na alloy in the range from about 0.49 kPa to about 78 kPa.
RU93033689/33A 1993-06-13 1993-06-30 COOLING METHOD FOR GLASS FORMING TOOL RU93033689A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CZ943317A CZ281240B6 (en) 1993-06-13 1994-04-15 Glass melt moulding means
CZ94915A CZ279920B6 (en) 1993-06-13 1994-04-15 Method of cooling a fixture used for glass melt forming

Publications (1)

Publication Number Publication Date
RU93033689A true RU93033689A (en) 1995-07-20

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