SU317464A1 - COATING FOR THE MANUFACTURE OF CHEMICALLY-INERT FORMS IN MANUFACTURE pouring according to MELTED MODELS - Google Patents
COATING FOR THE MANUFACTURE OF CHEMICALLY-INERT FORMS IN MANUFACTURE pouring according to MELTED MODELSInfo
- Publication number
- SU317464A1 SU317464A1 SU1243191A SU1243191A SU317464A1 SU 317464 A1 SU317464 A1 SU 317464A1 SU 1243191 A SU1243191 A SU 1243191A SU 1243191 A SU1243191 A SU 1243191A SU 317464 A1 SU317464 A1 SU 317464A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- manufacture
- coating
- chemically
- pouring according
- melted models
- Prior art date
Links
- 239000011248 coating agent Substances 0.000 title description 9
- 238000000576 coating method Methods 0.000 title description 9
- 238000004519 manufacturing process Methods 0.000 title description 8
- CSNNHWWHGAXBCP-UHFFFAOYSA-L mgso4 Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 8
- ZLNQQNXFFQJAID-UHFFFAOYSA-L Magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 7
- 239000011776 magnesium carbonate Substances 0.000 description 7
- 235000014380 magnesium carbonate Nutrition 0.000 description 7
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 4
- 235000019341 magnesium sulphate Nutrition 0.000 description 4
- 239000004408 titanium dioxide Substances 0.000 description 4
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L MgCl2 Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
Известны покрыти дл изготовлени оболочковых .форм в производстве лить по выплавл емым модел м на основе каустического магнезита и хлористого магни .Known coatings for the manufacture of shell molds in the production of casting on melted models based on caustic magnesite and magnesium chloride.
Формы, полученные с использованием указанного покрыти , не могут быть использованы дл получени в них отливок из химически активных металлов, так как каустический магнезит после обжига остаетс рыхлым с наличием неразложившихс карбонатов и обладает повышенной реакционной способностью.The forms obtained using this coating cannot be used to produce castings from reactive metals in them, since the caustic magnesite after firing remains loose with the presence of undecomposed carbonates and has an increased reactivity.
Предложенное покрытие позвол ет получить контактные слои оболочковой формы химически инертными.The proposed coating makes it possible to obtain contact layers of the shell form chemically inert.
В составе покрыти используют химически инертный высокообожженный магнезит, сернокислый магний и минерализатор - двуокись титана. Высокообожженный магнезит вл етс основой покрыти , сернокислый магний ввод т в состав покрыти дл получени мелкодисперсной MgO (при температуре 1124°С протекает реакци MgS04- MgO-fSOaf), необходимой дл активации процесса спекани магнезита при обжиге. Двуокись титана снижает температуру спекани магнезита до 1200-1250°С и получают высокопрочное покрытие без изменени химической инертности его.Chemically inert highly calcined magnesite, magnesium sulphate and the mineralizer titanium dioxide are used in the coating composition. Highly calcined magnesite is the basis of the coating, magnesium sulphate is introduced into the composition of the coating to produce fine MgO (at a temperature of 1124 ° C, the reaction MgS04-MgO-fSOaf proceeds) required to activate the sintering process of magnesite during roasting. Titanium dioxide reduces the sintering temperature of magnesite to 1200-1250 ° C and a high-strength coating is obtained without changing its chemical inertness.
Дл изготовлени покрыти магнезитовы порошок, полученный измельчением бо сне ченного магнезитового кирпича до дисперснс сти 40-20 мк, перемешивают с двуокисыэ 5 титана. Сернокислый магний раствор ют расчетном количестве воды. Затем все сме шивают до получени однородной суспензиTo manufacture the coating, magnesite powder obtained by grinding a large magnesite brick to a dispersion of 40-20 microns is mixed with 5 titanium dioxide. Magnesium sulphate is dissolved in a calculated amount of water. Then they are all mixed until a homogeneous suspension is obtained.
При использовании данного покрыти дл изготовлени контактных слоев форм (упро 0 н юш,ие слои могут быть на этилснликатпо св зующем) получают качественные отливк в этих формах из химически активных м( таллов.When using this coating for the manufacture of contact layers of forms (simple, even layers can be on ethyl silicate binder), high-quality castings in these forms are made of chemically active m (tal.
Предмет изобретени Subject invention
5five
Покрытие дл изготовлени химическ i инертных форм в производстве лить по вь плавл емым модел м, содержаш,ее в качес ве основы высокообожженпый магнезит, о; Coating for the manufacture of chemical and inert forms in the production of molten fused models, containing, as a base, highly calcined magnesite, o;
0 лшшющеес тем, что, с целью получени О: лнвок из химически активных металлов, т его состав введены сернокислый магний и двуокись титана при следующем соотнош( НИИ компонентов, %:0, in order to obtain O: lnvok from chemically active metals, magnesium sulphate and titanium dioxide were added to its composition in the following ratio (scientific research institute of components,%:
Высокообожженный магне5Highly Annealed Magne5
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU317464A1 true SU317464A1 (en) |
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