SU270965A1 - FORMING AND STEM LIQUID-MIXTURE - Google Patents
FORMING AND STEM LIQUID-MIXTUREInfo
- Publication number
- SU270965A1 SU270965A1 SU865501A SU865501A SU270965A1 SU 270965 A1 SU270965 A1 SU 270965A1 SU 865501 A SU865501 A SU 865501A SU 865501 A SU865501 A SU 865501A SU 270965 A1 SU270965 A1 SU 270965A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- mixture
- forming
- rods
- stem liquid
- kgf
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000004604 Blowing Agent Substances 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N Sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L Sulphite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 229910052904 quartz Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 150000003432 sterols Chemical class 0.000 description 1
- 235000003702 sterols Nutrition 0.000 description 1
Description
Известна формовочна .смесь в виде жидкой массы, содержаща наполнитель (кварцевый песок), св зующее неорганического и органического происхождени (жидкое стекло и т. д.), пенообразователи, ускорители затвердевани (кислоты) и воду. В предложенный состав смеси вводитс молотый клинкер в количестве 8-10% состава (в %): CuOоснова SiO229-31 сумма окислов (Ре2Оз) 15-17 в сочетании с органическими св зующими материалами в виде крепител КВС-1,5-2,5 .и сульфитной барды 3,5-4,5, вл ющихс одновременно пенообразовател ми. Из смеси приведенного состава изготовл ютс формы и стержни, дл чего в смеситель шнекового или лопаточного типа загружают кварцевый песок и клинкер (в указанных количествах ), после их смешивани вводитс композици св зующих материалов и вода до влажности 3,5-4,5%. Смесь после 2-3-минутного перемешивани приобретает высокотекучее состо ние и заливаетс в стержневые щики или формы. Стержневые щики изготовл ютс обычным пор дком, к их окраске, уклоизм И Т, Д. никаких дополнительных требоваПИЙ не предъ вл ют. Перед заливкой смеси щик протирают ветоп1ью, смоченной в воде или керосине. Дальнейший технологический процесс ничем не отличаетс от общеизвестного способа изготовлени стержней, кантовки щика, разъема, отделки стержней и т. д. Врем разъема стержневых щиков зависит от веса стержн , габаритов, наличи выступающих и нависающих частей и т. д. Стержни подвергаютс окраске, но в некоторых случа х могут не окрашиватьс (тонкостенные мелкое и среднее литье). Стержни затвердевают на воздухе. Дл интенсификации процесса твердени может быть применена продувка холодным или подогретым воздухом, тогда нарастание прочности происходит интенсивней и уже через 20 мин достигает 12 кгс/см. Стерлчни, изготовленные из предлагаемой смеси, обладают высокой газопроницаемостью (до 300-400 и выше ед.), пределом прочности при разрыве до 12 кгс/см, пределом прочности при изгибе (образцы вырезаны с поверхности) 5-6 кгс/см, почти полным отсутствием осыпаемости. Стержни легко удал ютс из отливок (высыпаютс ). Остаточна прочность образцов, удаленных на 400 мм от стенок отливки, при испытании на сжатие выражаетс 1,25-1,3 кгс/см. Чистота поверхностей отливок не превышает 200-300 лгл наA known molding mixture in the form of a liquid mass, containing a filler (silica sand), a binder of inorganic and organic origin (water glass, etc.), foaming agents, solidification accelerators (acids) and water. Ground clinker in the amount of 8-10% of the composition (in%) is introduced into the proposed composition of the mixture: CuO basis SiO229-31 amount of oxides (Pe2Oz) 15-17 in combination with organic binding materials in the form of a KVS-1.5-2.5 fixer . and sulphite bards of 3.5-4.5, which are simultaneously blowing agents. Forms and cores are made from a mixture of the above composition, for which quartz sand and clinker (in the specified amounts) are loaded into a screw or blade type mixer, after they are mixed, the composition of binding materials and water are introduced to a moisture content of 3.5–4.5%. After 2-3 minutes of mixing, the mixture becomes highly fluid and is poured into core boxes or molds. Core drawers are made in the usual order, their coloring, ukloizm and T, D. no additional requirements do not impose. Before pouring the mixture, the box is wiped with a cloth dipped in water or kerosene. Further technological process is no different from the well-known method of manufacturing rods, turner box, connector, trim rods, etc. The time of the socket box rods depends on the weight of the rod, size, the presence of protruding and overhanging parts, etc. The rods are painted, but in some cases, they may not be painted (thin-walled fine and medium castings). The rods harden in air. In order to intensify the hardening process, blowing with cold or heated air can be used, then the increase in strength occurs more intensively and in 20 minutes reaches 12 kgf / cm. The sterols made from the proposed mixture have a high gas permeability (up to 300-400 and higher units), tensile strength at break up to 12 kgf / cm, tensile strength at bending (samples cut from the surface) 5-6 kgf / cm, almost full lack of fallability. The rods are easily removed from the castings (pour out). The residual strength of specimens removed 400 mm from the walls of the casting is expressed in compression tests of 1.25-1.3 kgf / cm. The cleanliness of cast surfaces does not exceed 200-300 lgl per
отдельных, участках поверхности; дефектов тина ужимин и нригаров не наблюдаетс .individual, surface areas; there are no defects of tinna uimin and nrigar.
Отработанна смесь может быть нолностыо использована в пронзводстве без снецнальной обработки.The used mixture can be used in the production without any processing.
Предмет изобретени Subject invention
1. Формовочна и стержнева жидкотекуча смесь на кварцевом неске, отличающа с тем, что, с целью устранени набивки, улучшени выбиваемости и чистоты поверхности отливок, она имеет в своем составе, в %:1. The molding and core fluid mixture on a quartz noose, characterized in that, in order to eliminate the packing, to improve the embossability and cleanliness of the surface of the castings, it contains, in%:
основаthe foundation
8-108-10
Claims (2)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU270965A1 true SU270965A1 (en) |
Family
ID=
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4093778A (en) * | 1976-09-10 | 1978-06-06 | Nalco Chemical Company | Ingot mold for producing steel ingots |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4093778A (en) * | 1976-09-10 | 1978-06-06 | Nalco Chemical Company | Ingot mold for producing steel ingots |
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