CN104959554A - Covering agent for steel casting - Google Patents
Covering agent for steel casting Download PDFInfo
- Publication number
- CN104959554A CN104959554A CN201510410994.9A CN201510410994A CN104959554A CN 104959554 A CN104959554 A CN 104959554A CN 201510410994 A CN201510410994 A CN 201510410994A CN 104959554 A CN104959554 A CN 104959554A
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- China
- Prior art keywords
- powder
- covering agent
- coverture
- metal
- casting
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- Continuous Casting (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a covering agent for steel casting. The covering agent is obtained thorugh mixed processing of, by weight, 5%-8% of calcium bicarbonate, 14%-29% of metallic magnesium powder, 1%-2% of metallic rhenium powder, 5%-16% of niter, 25%-35% of buttonwood saw dust powder, 15%-30% of plant ash, 9%-17% of metallic iron powder and 5%-8% of calcium carbide powder. The covering agent can generate heat, and the heat preservation and heat insulation effects of the covering agent can be improved easily; in addition, the condensation speed of metal liquid of a casting riser can be decreased easily, and the capacity of the covering agent to absorb impurities contained in the metal liquid of the covering agent is improved.
Description
Technical field
The present invention relates to a kind of cast steel coverture, particularly relate to and a kind ofly carry out being incubated coverture used to molten metal for metal industry casting field.
Background technology
In prior art, in casting field in casting ladle molten metal casting before and casting cycle in all must be incubated.Heat preserving mode continues to use traditional plant ash always, but plant ash have inflammable, have pollution to environment; Patent publication No. is floss collecting agent for temperature isolation disclosed in CN1032959A, although have insulation and collection slag function, because perlite content is too high, easy satchel, often causes the damage of watering ladle-lining.Acidity, neutral coverture that the insulation materials such as current domestic usual use charring rice husk, perlite make, heat insulation effect is poor, and coverture self does not have heating function, can not compensate the reduction of temperature in casting cycle.
Summary of the invention
Instant invention overcomes the problems referred to above that prior art exists, its object is to propose the agent of a kind of cast steel coverture, coverture heat insulation effect is desirable simultaneously to have heating function, and collection slag performance is strong.
Above-mentioned purpose of the present invention is achieved by the following technical programs.
A kind of cast steel coverture, each composition weight proportioning of this coverture is bicarbonate calcium powder 5 ~ 8%; Metal magnesium powder 14 ~ 29%; Rhenium metal powder 1-2%; Potassium nitrate 5 ~ 16%; Chinese parasol tree tree sawdust powder 25 ~ 35%; Plant ash 15 ~ 30%; Metal iron powder 9 ~ 17%; Calcium carbide powder 5 ~ 8%.
The technical program is that this coverture substitutes conventional graphite powder, the constant but not carburetting of function.
Coverture provided by the present invention self can produce insulation, the effect of heat insulation that heat is conducive to improving coverture, the more important thing is the condensing rate being conducive to delaying casting matrix riser metal liquid, also can strengthen the ability that coverture absorbs metal liquid impurity simultaneously.This coverture can be widely used in the various ferrous metal castings such as cast steel.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described:
embodiment 1
A kind of cast steel coverture, each composition weight proportioning of this coverture is bicarbonate calcium powder 6%; Metal magnesium powder 24%; Rhenium metal powder 1%; Potassium nitrate 9%; Chinese parasol tree tree sawdust powder 26%; Plant ash 15%; Metal iron powder 13%; Calcium carbide powder 6%.
Embodiment 2
a kind of cast steel coverture, each composition weight proportioning of this coverture is bicarbonate calcium powder 7%; Metal magnesium powder 23%; Rhenium metal powder 1%; Potassium nitrate 9%; Chinese parasol tree tree sawdust powder 26%; Plant ash 15%; Metal iron powder 13%; Calcium carbide powder 6%.
Claims (1)
1. a cast steel coverture, each composition weight proportioning of this coverture is bicarbonate calcium powder 5 ~ 8%; Metal magnesium powder 14 ~ 29%; Rhenium metal powder 1-2%; Potassium nitrate 5 ~ 16%; Chinese parasol tree tree sawdust powder 25 ~ 35%; Plant ash 15 ~ 30%; Metal iron powder 9 ~ 17%; Calcium carbide powder 5 ~ 8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510410994.9A CN104959554A (en) | 2015-07-14 | 2015-07-14 | Covering agent for steel casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510410994.9A CN104959554A (en) | 2015-07-14 | 2015-07-14 | Covering agent for steel casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104959554A true CN104959554A (en) | 2015-10-07 |
Family
ID=54213731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510410994.9A Pending CN104959554A (en) | 2015-07-14 | 2015-07-14 | Covering agent for steel casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104959554A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112296315A (en) * | 2020-11-04 | 2021-02-02 | 河北北方铸业有限公司 | Method for patching riser of steel casting by heating material |
-
2015
- 2015-07-14 CN CN201510410994.9A patent/CN104959554A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112296315A (en) * | 2020-11-04 | 2021-02-02 | 河北北方铸业有限公司 | Method for patching riser of steel casting by heating material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151007 |
|
| WD01 | Invention patent application deemed withdrawn after publication |