SU776738A1 - Pickup preventing coating for casting moulds and cores - Google Patents
Pickup preventing coating for casting moulds and cores Download PDFInfo
- Publication number
- SU776738A1 SU776738A1 SU782676836A SU2676836A SU776738A1 SU 776738 A1 SU776738 A1 SU 776738A1 SU 782676836 A SU782676836 A SU 782676836A SU 2676836 A SU2676836 A SU 2676836A SU 776738 A1 SU776738 A1 SU 776738A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- cores
- preventing coating
- casting moulds
- coating
- pickup preventing
- Prior art date
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- Mold Materials And Core Materials (AREA)
Description
Лйгносульфонатов и огнеупорную глину, дополнительно содержит безобжиговый магнезитохромит прн следующем соотношеНИН ингредиентов, вес. %: -..-..-.-:Lignosulphonates and refractory clay, additionally contains unburned magnesito-chromite in the following ratio of ingredients, weight. %: -..-..-.-:
Безобжиговый магнезитохромит57-61Unburned Magnesite-Chromite57-61
Глина огнеупорна 2-6 Св зующее на основеClay refractory 2-6 Binder based
Лйгносульфонатов6-10Lygnosulfonatov6-10
Обжиговый магнезито-Roasting magnesite
хромитОстальноеchromite
Безобжиговый магнезитохромит (сырец) при заливке приобретает, благодар обжигу пасты, такие же высокие свойства по огнеупорности н теплопроводности, что и примен емый совместно с ним обожженный магнезнтохромит. Во врем заливки формы обжиговый магнезитохромит расшир етс , а сырец дает усадку, за счет чего повышаетс плотность пасты с одновременным повышением ее пластичности. Така паста не растрескиваетс , не нарушаетс снлошность покрыти при заливке. в качестве св зующего на основе лигносульфонатов покрытие содержит патоку или барду сульфитного щелока. Огнеупорна глина или бентонит вводитс в состав покрыти в качестве стабилизатора. Дл приготовлени пасты используемыеUnburned magnesite-chromite (raw), when casting, acquires, thanks to the firing of the paste, the same high refractoriness and thermal conductivity properties as the burnt magnestoxychromite used with it. During mold casting, the roasting magnesito-chromite expands and the raw material shrinks, thereby increasing the density of the paste while increasing its plasticity. Such paste does not crack, and the coating does not break when poured. As a binder based on lignosulfonates, the coating contains the molasses or bard sulfite liquor. Refractory clay or bentonite is incorporated into the coating composition as a stabilizer. Used for cooking pasta
наполнители (обжиговый и безобл иговый магнезитохромиты) измельчаютс , смешиваютс до получени однородного порошка , который просеиваетс через сито 0,5Х Х0,5 мм.The fillers (roasting and smooth magnesite chromites) are crushed and mixed to obtain a homogeneous powder, which is sifted through a sieve of 0.5 X X 0.5 mm.
Перед использованием пасты в ее состав вводитс вода дл обеспечени необходимой в зкости, завис щей от характера способа нанесени покрыти на поверхности форм и стержней.Before using the paste, water is added to its composition to provide the necessary viscosity, depending on the nature of the coating method on the surfaces of the molds and cores.
В табл. 1 приведены составы покрыти по изобретению, в табл. 2 - свойства их.In tab. Table 1 shows the coating compositions of the invention, in table. 2 - their properties.
Таблица 1Table 1
При содержании в составе покрыти безобжигового магнезитохромита свыше 54- 61 вес. % или ниже 57 вес. % на поверхТаблица 2When the content in the coating composition of unburned magnesite-chromite is more than 54-61 wt. % or below 57 wt. % on top of Table 2
Номер составаComposition number
ности отливок по вл ютс мелкие трещины и пригарна сетка. Реализаци изобретени позволит получать бТлйВкИ с качественной поверхностью без дефектов.small cracks and a fine mesh will appear in the castings. The implementation of the invention will allow to obtain BTWs with a high-quality surface without defects.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782676836A SU776738A1 (en) | 1978-09-18 | 1978-09-18 | Pickup preventing coating for casting moulds and cores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782676836A SU776738A1 (en) | 1978-09-18 | 1978-09-18 | Pickup preventing coating for casting moulds and cores |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU776738A1 true SU776738A1 (en) | 1980-11-07 |
Family
ID=20790426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU782676836A SU776738A1 (en) | 1978-09-18 | 1978-09-18 | Pickup preventing coating for casting moulds and cores |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU776738A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475672A (en) * | 2014-12-08 | 2015-04-01 | 昌乐恒昌化工有限公司 | Casting coating produced from steelmaking runner waste materials and preparation method thereof |
-
1978
- 1978-09-18 SU SU782676836A patent/SU776738A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475672A (en) * | 2014-12-08 | 2015-04-01 | 昌乐恒昌化工有限公司 | Casting coating produced from steelmaking runner waste materials and preparation method thereof |
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