SU1600905A1 - Sand for making cores and moulds hardened in cold tooling by blow-out with sulfurous acid anhydride - Google Patents
Sand for making cores and moulds hardened in cold tooling by blow-out with sulfurous acid anhydride Download PDFInfo
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- SU1600905A1 SU1600905A1 SU4624466A SU4624466A SU1600905A1 SU 1600905 A1 SU1600905 A1 SU 1600905A1 SU 4624466 A SU4624466 A SU 4624466A SU 4624466 A SU4624466 A SU 4624466A SU 1600905 A1 SU1600905 A1 SU 1600905A1
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Abstract
Изобретение относитс к литейному производству, в частности к составам смесей дл изготовлени литейных форм и стержней, отверждаемых в холодной оснастке продувкой сернистым ангидридом. Цель изобретени - повышение начальной и конечной прочности стержней. Состав смеси, мас.%: фенолофуранова смола 0,8-1,6, циклогексилфенилизопропилгидропероксид 0,15-0,40, пероксид метилэтилкетона 0,15-0,40, кварцевый песок остальное. Реализаци изобретени позвол ет повысить прочность стержней сразу после продувки сернистым ангидридом на 30-60% и конечную прочность на 6-14%, что способствует улучшению качества стержней. 2 табл.The invention relates to foundry, in particular, to mixtures for the manufacture of foundry molds and cores, which are cured in a cold snap by blowing with sulfuric anhydride. The purpose of the invention is to increase the initial and final strength of the rods. The composition of the mixture, wt.%: Phenolofuran resin 0.8-1.6, cyclohexylphenylisopropyl hydroperoxide 0.15-0.40, methyl ethyl ketone peroxide 0.15-0.40, silica sand the rest. The implementation of the invention makes it possible to increase the strength of the rods immediately after purging with sulfuric anhydride by 30-60% and the final strength by 6-14%, which contributes to the improvement of the quality of the rods. 2 tab.
Description
Изобретение относитс к литейному производству, в частности к составам смесей дл изготовлени литейных стержней и форм, отверждаемых в холодной оснастке продувкой сернистым ангидридом.The invention relates to foundry, in particular, to mixtures for the manufacture of foundry cores and molds that are cured in a cold snap by blowing with sulfuric anhydride.
Цель изобретени - повышение начальной и конечной прочности.The purpose of the invention is to increase the initial and final strength.
Сущность изобретени заключаетс в применении комплексного пероксида, предусматриваетс совместно с циклогексил- фенилизопропилгидропероксидом использовать гидропероксид метилзтилке- тона.The essence of the invention lies in the use of the complex peroxide, provided in conjunction with cyclohexylphenylisopropyl hydroperoxide to use methyl issyl ketone hydroperoxide.
Пероксид метилэтилкетона используют в виде раствора в среде диметилфталата.Methyl ethyl ketone peroxide is used as a solution in dimethyl phthalate medium.
По внешнему виду пероксид метилэтилкетона представл ет собой бесцветную прозрачную масл нистую жидкость. Предельно допустима концентраци паров в воздухе рабочей зоны производственных помещений 45 мг/м .In appearance, methyl ethyl ketone peroxide is a colorless transparent oily liquid. The maximum permissible vapor concentration in the air of the working area of industrial premises is 45 mg / m.
Циклогексилфенилизопропил примен ют в виде технического продукта.Cyclohexylphenylisopropyl is used as a technical product.
В предлагаемой смеси в качестве св зующего примен ют фенолофурановую смолу с содержанием фурилового спирта 60% и низким содержанием воды. В качестве огнеупорного наполнител используют кварцевый песок.In the proposed mixture, a phenolofuran resin with a content of furyl alcohol of 60% and low water content is used as a binder. Quartz sand is used as a refractory filler.
Дл получени смеси в смеситель загружают огнеупорный наполнитель.- кварцеОTo obtain the mixture, a refractory filler is loaded into the mixer. - Quartz O
о о о о елoh oh oh ate
вый песок и циклогексилфенилизопропил- гидропероксид, которые перемешивают 2 мин. Затем ввод т пероксид метилэтилкето- на и смесь перемешивают еще 2 мин. Ввод т фенолофурановую смолу и смесь дополнительно перемешивают 3 мин, после чего выгружают из смесител . Смесь уплотн ют пескодувным способом и отверждают продувкой сернистым ангидридом а тече- ;ние 1 с, после чего провод т продувку воз- духом в течение 20 с.sand and cyclohexylphenylisopropyl hydroperoxide, which are mixed for 2 minutes. Methyl ethyl ketone peroxide is then added and the mixture is stirred for another 2 minutes. The phenolofuran resin is introduced and the mixture is stirred for an additional 3 minutes, after which it is discharged from the mixer. The mixture is compacted by a sandblasting method and solidified by blowing with sulfuric anhydride for 1 second, after which it is carried out by air blowing for 20 seconds.
Составы смесей приведены в табл. 1; j прочностные свойства смесей - в табл. 2. Использование предлагаемой смеси ; позвол ет повысить прочность стержней сразу после продувки на 30-60% и конеч- ную прочность на 6-14%, что способствует : улучшению качества стержней. The compositions of the mixtures are given in table. one; j strength properties of mixtures - in the table. 2. The use of the proposed mixture; it allows to increase the strength of the rods immediately after purging by 30-60% and the final strength by 6-14%, which contributes to: improving the quality of the rods.
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Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU4624466A SU1600905A1 (en) | 1988-12-23 | 1988-12-23 | Sand for making cores and moulds hardened in cold tooling by blow-out with sulfurous acid anhydride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU4624466A SU1600905A1 (en) | 1988-12-23 | 1988-12-23 | Sand for making cores and moulds hardened in cold tooling by blow-out with sulfurous acid anhydride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1600905A1 true SU1600905A1 (en) | 1990-10-23 |
Family
ID=21417011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU4624466A SU1600905A1 (en) | 1988-12-23 | 1988-12-23 | Sand for making cores and moulds hardened in cold tooling by blow-out with sulfurous acid anhydride |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1600905A1 (en) |
-
1988
- 1988-12-23 SU SU4624466A patent/SU1600905A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Foundry Manag, Technol,1982, N 2, с. 110, Авторское свидетельство СССР NS 1496900, кл. В 22 С 1 /22, 1987. * |
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