SU178952A1 - - Google Patents

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Publication number
SU178952A1
SU178952A1 SU752449A SU752449A SU178952A1 SU 178952 A1 SU178952 A1 SU 178952A1 SU 752449 A SU752449 A SU 752449A SU 752449 A SU752449 A SU 752449A SU 178952 A1 SU178952 A1 SU 178952A1
Authority
SU
USSR - Soviet Union
Prior art keywords
electrode
suspension
layer
ceramics
hydrochloric acid
Prior art date
Application number
SU752449A
Other languages
Russian (ru)
Publication of SU178952A1 publication Critical patent/SU178952A1/ru

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Description

Известные способы лить  по выплавл емым модел м предусматривают использование сухих (сыпучих) или жидких наполнительных смесей. Литье в нагретые керамические формы с применением св зующего жидкого стекла св зано с продолжительным циклом технологического процесса.Known methods for casting on melted models involve the use of dry (bulk) or liquid filling mixtures. Casting into heated ceramic molds using bonding liquid glass is associated with a long process cycle.

Предлагаемый способ отличаетс  от известных тем, что первый и последующий слои керамики выполн ютс  из суспензии с повышенным (в 2-5 раз) количеством (0,25- 0,48%) сол ной кислоты, второй слой с 2-5% электродного нека и третий - из суспензии в сочетании 2-5% электродного нека и 4% борной кислоты. Это повышает производительность и улучшает качество отливок.The proposed method differs from the known ones in that the first and subsequent layers of ceramics are made of a slurry with an increased (2-5 times) amount (0.25-0.48%) of hydrochloric acid, the second layer with 2-5% electrode and the third is from suspension in combination of 2-5% electrode and 4% boric acid. This increases productivity and improves the quality of the castings.

Сущность способа заключаетс  в следующем: изготовл ют и собирают в модельно-литниковые блоки выплавл емые модели и нанос т на них слон керамики путем окунани  в суспензию.The essence of the method is as follows: the produced models are fabricated and assembled into model gating units, and elephant ceramics are applied to them by dipping into a slurry.

Суспензи  дл  первого сло  содерлшт этилсиликат , эфироальдегидную фракцию (или другие растворители), пылевидный кварц, воду , сол ную кислоту и глицерин. Дл  второго сло  в суснензию дополнительно ввод т 2- 5% электродного нека, а дл  третьего сло  - 4% борной кнслоты и 2-5 % электродногоThe suspension for the first layer contains ethyl silicate, etherealdehyde fraction (or other solvents), powdered quartz, water, hydrochloric acid and glycerin. For the second layer, 2–5% of the electrode is additionally added to the suspension, and for the third layer, 4% of the boron cell and 2–5% of the electrode

уо борной кнслоты пека.u Boron kslslota pitch.

Предмет изобретени Subject invention

10ten

Способ лнть  по выплавл емым модел м в многослойные формы с термореактивными присадками в суспензии на основе пылевидного кварца и гидролизованпого этилсиликатаMethod of melting models in multilayer forms with thermosetting additives in a slurry based on powdered quartz and hydrolyzed ethyl silicate

с добавкой глицерина, отличающийс  тем, что, с целью повышени  производительности труда и качества отливок, первый и последующие слои керамики выполн ют из суспензии, содержащей 0,25-0,48% сол ной кислоты, второй слой с 2-5% электродного пека и третий - из суспензии в сочетании 2-5% электродного пека и 4% борной кислоты.with the addition of glycerin, characterized in that, in order to increase labor productivity and quality of castings, the first and subsequent layers of ceramics are made of a suspension containing 0.25-0.48% hydrochloric acid, the second layer with 2-5% electrode pitch and the third is from suspension in combination of 2-5% electrode pitch and 4% boric acid.

SU752449A SU178952A1 (en)

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Publication Number Publication Date
SU178952A1 true SU178952A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0020373A1 (en) * 1978-12-04 1981-01-07 Caterpillar Tractor Co Method of making and using a ceramic shell mold.
US5617912A (en) * 1904-04-14 1997-04-08 Ballewski; Heinrich Process for preparing and using a ceramic shell as a casting mold with reducing properties

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5617912A (en) * 1904-04-14 1997-04-08 Ballewski; Heinrich Process for preparing and using a ceramic shell as a casting mold with reducing properties
EP0020373A1 (en) * 1978-12-04 1981-01-07 Caterpillar Tractor Co Method of making and using a ceramic shell mold.

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