CN105033197A - Covering agent for iron casting - Google Patents
Covering agent for iron casting Download PDFInfo
- Publication number
- CN105033197A CN105033197A CN201510410978.XA CN201510410978A CN105033197A CN 105033197 A CN105033197 A CN 105033197A CN 201510410978 A CN201510410978 A CN 201510410978A CN 105033197 A CN105033197 A CN 105033197A
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- China
- Prior art keywords
- powder
- covering agent
- coverture
- metal
- iron
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention discloses a covering agent for iron casting. The covering agent is prepared from, by weight, 5-8% of calcium bicarbonate powder, 14-29% of metallic magnesium powder, 1-2% of metallic rhenium powder, 5-16% of potassium nitrate, 1% of zirconium carbonate powder, 25-35% of buttonwood sawdust powder, 15-30% of plant ash, 9-17% of metallic iron powder and 5-8% of calcium carbide powder, and the covering agent is obtained by mixing and processing the components. The covering agent for the iron casting can generate heat itself, improvement of the heat preservation and heat insulation effects of the covering agent is facilitated, the condensing rate of metal liquid on a casting riser is slowed down, and the capacity of the covering agent for absorbing impurities in the metal liquid is enhanced.
Description
Technical field
The present invention relates to a kind of cast iron 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 iron 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 iron 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%; Carbonic acid zirconium powder 1%; 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 iron.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described:
Embodiment 1
A kind of cast iron coverture, each composition weight proportioning of this coverture is bicarbonate calcium powder 6%; Metal magnesium powder 24%; Rhenium metal powder 1%; Potassium nitrate 9%; Carbonic acid zirconium powder 1%; Chinese parasol tree tree sawdust powder 26%; Plant ash 15%; Metal iron powder 13%; Calcium carbide powder 5%.
Embodiment 2
A kind of cast iron coverture, each composition weight proportioning of this coverture is bicarbonate calcium powder 7%; Metal magnesium powder 23%; Rhenium metal powder 1%; Potassium nitrate 9%; Carbonic acid zirconium powder 1%; Chinese parasol tree tree sawdust powder 26%; Plant ash 15%; Metal iron powder 13%; Calcium carbide powder 5%.
Claims (1)
1. a cast iron 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%; Carbonic acid zirconium powder 1%; 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 |
|---|---|---|---|
| CN201510410978.XA CN105033197A (en) | 2015-07-14 | 2015-07-14 | Covering agent for iron casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510410978.XA CN105033197A (en) | 2015-07-14 | 2015-07-14 | Covering agent for iron casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105033197A true CN105033197A (en) | 2015-11-11 |
Family
ID=54440495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510410978.XA Pending CN105033197A (en) | 2015-07-14 | 2015-07-14 | Covering agent for iron casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105033197A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107698267A (en) * | 2017-10-18 | 2018-02-16 | 唐宏泉 | A kind of riser heating and insulating agent and its preparation technology |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5285024A (en) * | 1976-01-09 | 1977-07-15 | Kawasaki Steel Co | Method of highhspeed bottom pouring casting of steel ingot with less slag invasion and large interposed substance under surface |
| JPS59130674A (en) * | 1983-01-17 | 1984-07-27 | Hitachi Ltd | Bottom running ingot making method |
| CN1686636A (en) * | 2005-05-16 | 2005-10-26 | 高申明 | Steel, molten iron slag gathering heat insulating covering agent possessing sulfur phosphorus eliminating function |
| CN101474665A (en) * | 2007-12-31 | 2009-07-08 | 大连核心铸造技术工程研究所 | Covering agent |
| CN102233409A (en) * | 2010-05-06 | 2011-11-09 | 大连核心铸造技术工程研究所 | Self-heating heat preservation covering agent |
| CN103042182A (en) * | 2012-07-06 | 2013-04-17 | 山国强 | Heat preservation covering agent |
-
2015
- 2015-07-14 CN CN201510410978.XA patent/CN105033197A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5285024A (en) * | 1976-01-09 | 1977-07-15 | Kawasaki Steel Co | Method of highhspeed bottom pouring casting of steel ingot with less slag invasion and large interposed substance under surface |
| JPS59130674A (en) * | 1983-01-17 | 1984-07-27 | Hitachi Ltd | Bottom running ingot making method |
| CN1686636A (en) * | 2005-05-16 | 2005-10-26 | 高申明 | Steel, molten iron slag gathering heat insulating covering agent possessing sulfur phosphorus eliminating function |
| CN101474665A (en) * | 2007-12-31 | 2009-07-08 | 大连核心铸造技术工程研究所 | Covering agent |
| CN102233409A (en) * | 2010-05-06 | 2011-11-09 | 大连核心铸造技术工程研究所 | Self-heating heat preservation covering agent |
| CN103042182A (en) * | 2012-07-06 | 2013-04-17 | 山国强 | Heat preservation covering agent |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107698267A (en) * | 2017-10-18 | 2018-02-16 | 唐宏泉 | A kind of riser heating and insulating agent and its preparation technology |
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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: 20151111 |
|
| WD01 | Invention patent application deemed withdrawn after publication |