SU342722A1 - DIVIDING COATING IN THE MANUFACTURING OF CASTING FORMS AND RODS ON THE HOT EQUIPMENT - Google Patents
DIVIDING COATING IN THE MANUFACTURING OF CASTING FORMS AND RODS ON THE HOT EQUIPMENTInfo
- Publication number
- SU342722A1 SU342722A1 SU1265475A SU1265475A SU342722A1 SU 342722 A1 SU342722 A1 SU 342722A1 SU 1265475 A SU1265475 A SU 1265475A SU 1265475 A SU1265475 A SU 1265475A SU 342722 A1 SU342722 A1 SU 342722A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- rods
- manufacturing
- hot equipment
- casting forms
- coating
- Prior art date
Links
- 238000000576 coating method Methods 0.000 title description 6
- 239000011248 coating agent Substances 0.000 title description 5
- 238000004519 manufacturing process Methods 0.000 title description 4
- 238000005266 casting Methods 0.000 title 1
- 229920001971 elastomer Polymers 0.000 description 5
- 229920000126 latex Polymers 0.000 description 5
- 239000004205 dimethyl polysiloxane Substances 0.000 description 4
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 description 4
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 4
- -1 polydimethylsiloxane Polymers 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000000181 anti-adherent effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Description
Изобретение относитс к литейному производству , а именно к разделительным покрыти м нри изготовлении форм « стержней по гор чей оснастке.The invention relates to a foundry, in particular, to separation coatings for the manufacture of molds of rods on a hot snap.
Известно применение дл ука-занной цели разделительного состава СКТ-Р, представл ющего собой раствор полидиметилсилоксанового термостойкого каучука в уайт-спирте, предотвращающего прилипание песчано-смол ных смесей к поверхности модели при изготовлении форм и стержней по гор чей оснастке . Однако при хорощих термостойких и антиадгезионных свойствах этот состав огнеи взрывоопасен.It is known to use for this purpose a CKT-P release agent, which is a solution of polydimethylsiloxane heat-resistant rubber in white alcohol, which prevents sand-resin mixtures from sticking to the model's surface during the manufacture of molds and cores using hot equipment. However, with good heat-resistant and anti-adhesive properties, this composition of fire is explosive.
Предлагаемое разделительное покрытие представл ет собой двух-шестнадцатикратный водный раствор латекса термостойкого полидиметилсилоксанового каучука с содержанием сухого вещества от 1 до 10%. Покрытие не содержит органических растворителей, поэтому оно огне- и взрывобезопасно и может примен тьс па новых типах машин с газовыми или другими открытыми нагревател ми модельной оснастки.The proposed release coating is a two to sixteen times aqueous solution of heat resistant polydimethylsiloxane rubber latex with a dry matter content of from 1 to 10%. The coating does not contain organic solvents; therefore, it is fire and explosion-proof and can be used on new types of machines with gas or other open heaters of model equipment.
Производство латекса термостойкого высокомолекул рного полидиметилсилоксанового каучука состоит из следующих стадий:The production of heat-resistant high-molecular-weight polydimethylsiloxane rubber latex consists of the following stages:
приготовление водного раствора эмульгатора (вода+едкое кали-fканифоль);preparation of an aqueous solution of emulsifier (water + caustic potassium-fable);
приготовление грубой водной дисперсии каучука (перемешивание раствора полимера каучука в изопентане с эмульгатором);preparation of coarse water dispersion of rubber (mixing rubber solution of rubber in isopentane with emulsifier);
гомогенизаци дисперсии;dispersion homogenization;
отгонка растворител (изопентана).distilling off the solvent (isopentane).
Дл получени разделительного покрыти латекс разбавл ют ум гченной водой и тщательно перемешивают до однородного состо ни (на 100 вес. ч. латекса 200-1600 вес. ч. ум гченной воды); при этом содержание сухого вещества измен етс от 10 до 1%.To obtain a release coating, the latex is diluted with softened water and thoroughly mixed until homogeneous (for 100 parts by weight of latex, 200-1600 parts by weight of softened water); the dry matter content varies from 10 to 1%.
Предложенный разделительный состав термсстоек , не чувствителен к повышению температуры модельной оснастки до 300°С, обеспечивает мпогосъемность оболочек или стержней после разового нанесени на модельную оснастку (до 60-70 съемов). При работе с описываемым разделителем не наблюдаетс газовыделени , а на модельной оснастке не образуетс нагар.The proposed separation composition of thermal stacks, is not sensitive to an increase in the temperature of the model equipment to 300 ° C, ensures the removal of the shells or rods after a single application to the model equipment (up to 60-70 removals). When working with the described separator, no outgassing is observed, and carbon deposits are not formed on the model equipment.
Предмет изобретени Subject invention
25 3 отличающеес тем, что, с целью обеспечени огне- и взрывобезопасности покрыти , использован двух-шестнадцатикратный водный рас4 твор латекса термостойкого высокомолекул рнего полидиметилсилоксанового каучука с содержанием сухого вещества от 1 до 10%.25 3 characterized in that, in order to ensure the fire and explosion safety of the coating, a two-sixteen-fold aqueous solution of heat-resistant high-molecular polydimethylsiloxane rubber latex rubber with a dry matter content of from 1 to 10% was used.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU342722A1 true SU342722A1 (en) |
Family
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991002607A1 (en) * | 1989-08-18 | 1991-03-07 | Fentak Pty.Ltd. | Mould release agent utilising vulcanisable silicone rubber |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991002607A1 (en) * | 1989-08-18 | 1991-03-07 | Fentak Pty.Ltd. | Mould release agent utilising vulcanisable silicone rubber |
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