CN1008797B - Slagging heat-insulating covering agent - Google Patents
Slagging heat-insulating covering agentInfo
- Publication number
- CN1008797B CN1008797B CN 87107620 CN87107620A CN1008797B CN 1008797 B CN1008797 B CN 1008797B CN 87107620 CN87107620 CN 87107620 CN 87107620 A CN87107620 A CN 87107620A CN 1008797 B CN1008797 B CN 1008797B
- Authority
- CN
- China
- Prior art keywords
- covering agent
- heat
- perlite
- present
- insulating covering
- Prior art date
- 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.)
- Expired
Links
Abstract
The present invention relates to a slag collecting and heat-insulating covering agent which is a novel ferrous metal casting material having slag collecting and heat insulating functions for molten metal during casting. The covering agent is composed of five main constituents and prepared by a material sorting procedure, a pulverizing procedure, a material mixing and compounding procedure, etc. The use temperature is 1320 DEG C to 1450 DEG C. The present invention has the advantages of no toxicity, no smell and no dust in the use process, and simple operation. Besides, the rate of finished products of products can be improved by 8% to 10%.
Description
The present invention relates to a kind of floss collecting agent for temperature isolation product, it belongs to handles used material to deposite metal in the casting ladle before the ferrous metal casting.
At China's ferrous metal casting industry, the hot-metal insulating before the casting in the casting ladle is continued to use traditional plant ash always and is sprinkled into molten iron and is incubated, though the plant ash wide material sources, low price, heat insulation effect is undesirable, and heat loss is bigger, and is also influential to production environment; Early eighties, some scholars of China propose to replace plant ash with perlite, and the result shows; Perlite is done casting deposite metal surface dopant and is had insulation and two functions of collection slag, but still exist some problems: the one, heat loss rate is big, the 2nd, collection slag blanket surface tension is little, the 3rd, collection slag blanket wall built-up is very serious, often cause the damage of watering ladle-lining, so people seek a kind of desirable floss collecting agent for temperature isolation always.
Purpose of the present invention is exactly in order to address the above problem, and a kind of coverture with collection slag and heat-insulating property is provided, and a kind of coverture with collection slag and heat-insulating property is provided, it is little to make it heat loss, collection slag blanket surface tension is big, and the collection slag blanket is a wall built-up, raw material easily look for and cost lower.
The present invention is achieved in that by skim agent, heat preserving agent, oxidant, surfactant, filler and forms, through selecting materials, pulverize, oven dry, mix processing and preparing.
Characteristics of the present invention are: skim agent adopts perlite, heat preserving agent to adopt vermiculite and perlite, oxidant adopts the di-iron trioxide iron powder, surfactant adopts fluorite, filler adopts red sand, various compositions with coverture: perlite, vermiculite, di-iron trioxide iron powder, fluorite and coarsely ground foundry sand are broken into powdery or granular its granularity less than three millimeters, and will dry under the temperature more than 20 ℃; The mix proportioning of various auxiliary agents is: perlite 60-65%, vermiculite 15-20%, di-iron trioxide powder 0.5-3%, fluorite 5-7%, red sand 10-15%.
Further specify in conjunction with the accompanying drawings, Fig. 2 is the composition schematic diagram of floss collecting agent for temperature isolation.1 is the skim agent perlite among the figure, and 2 is heat preserving agent vermiculite and perlite, and 3 is oxidant di-iron trioxide iron powder, and 4 is the surfactant fluorite, and 5 is the filler red sand.
The present invention compares with single perlite coverture with traditional plant ash has technical performance preferably.One, high insulating effect, heat loss is little, and accompanying drawing 1 is the insulation curve of these three kinds of covertures, the 2nd, single perlite coverture insulation curve, the 3rd, the present invention is incubated curve, and its test condition all adopts the grey cast-iron molten iron, 125 kilograms casting ladle is from 1450 ℃ of temperature retention times that drop to 1350 ℃; The present invention is 19 minutes and 44 seconds, and single perlite coverture is 7 minutes and 8 seconds, and the plant ash coverture is 6 minutes and 11 seconds.Two, collection slag blanket surface tension is big, and the present invention is 0.2kg/cm
2, single perlite coverture is 0.07kg/cm
2Three, can purifying molten iron, pore, the slag inclusion crackle of eliminating foundry goods there is certain effect, can further improve the yield rate of product.Four, in use nontoxic, dustless, free from extraneous odour, easy to operate.
Inventor's a embodiment is:the floss collecting agent for temperature isolation that is used for grey cast-iron, through selecting materials, press following proportioning:perlite 63.5%, vermiculite 20%, brown iron oxide 3.5%, fluorite 3%, red sand 10% is ground into granularity granular less than 3 millimeters respectively, 70 ℃ of of of of of of of of temperature of dries under then, mix according to the above ratio again, stir, pack with moisture barrier bag through check and form, 1450 ℃ of of of of of of of its suitable temperature is, addition is the 0.2-0.3% of metal liquid weight, 1450 ℃ of of of of 1350 ℃ of of of of of of of of of of of of of of of of of be of adds mode:Yong Tie or spreads casting ladle metal liquid surface equably with specific purpose tool.To drop to temperature retention times from, 19 minutes and, 44 seconds to liquid after testing, and its collection slag blanket surface tension is 0.2kg/cm2, its expansion multiple is 5 times, and pore, slag inclusion, the crackle of eliminating foundry goods had certain effect, has improved finished product rate 8%.
The present invention can be widely used in cast steel, cast iron, grey cast-iron, and various ferrous materials such as spheroidal graphite cast-iron can be applied to conventional cast, hot investment casting, various forging types such as continuous casting.Can make special-purpose collection slag and protect the slag coverture according to casting the dissimilar of material, as: spheroidal graphite cast-iron floss collecting agent for temperature isolation, cast steel floss collecting agent for temperature isolation etc.
Claims (2)
1, a kind of floss collecting agent for temperature isolation that is used for the cast iron casting ladle is characterized in that its perlite by 60-65%, the vermiculite of 15-20%, and the di-iron trioxide powder of 0.5-3%, the fluorite of 5-7%, the red sand of 10-15% is formed.
2, thermal-insulating covering agent according to claim 1 is characterized in that its various compositions are powdery or granular, and its granularity is less than 3 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87107620 CN1008797B (en) | 1987-11-04 | 1987-11-04 | Slagging heat-insulating covering agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87107620 CN1008797B (en) | 1987-11-04 | 1987-11-04 | Slagging heat-insulating covering agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1032959A CN1032959A (en) | 1989-05-17 |
| CN1008797B true CN1008797B (en) | 1990-07-18 |
Family
ID=4816170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87107620 Expired CN1008797B (en) | 1987-11-04 | 1987-11-04 | Slagging heat-insulating covering agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1008797B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055260C (en) * | 1994-09-09 | 2000-08-09 | 叶和辉 | Floss collecting agent for temperature isolation |
| CN1061573C (en) * | 1996-11-16 | 2001-02-07 | 郭小飞 | Thermal insulation covering agent for steel ladle and its producing method |
| CN100340363C (en) * | 2005-01-19 | 2007-10-03 | 盛富春 | Method for removing ladle dross |
| JP5138114B1 (en) * | 2012-07-06 | 2013-02-06 | 石川ライト工業株式会社 | Cover material covering the upper part of the spheroidizing agent during the spheroidizing treatment of cast iron |
| CN102756112B (en) * | 2012-07-31 | 2014-11-26 | 河南豫中铁合金有限公司 | Composite slag remover for casting |
| CN106011382A (en) * | 2016-05-26 | 2016-10-12 | 合肥市田源精铸有限公司 | Efficient slag collecting agent for cast steel slag and preparation method thereof |
| CN106636550B (en) * | 2016-10-24 | 2019-03-22 | 马鞍山顺发机械制造有限公司 | A kind of molten iron collection slag agent |
| CN111069543B (en) * | 2019-12-23 | 2021-11-09 | 山东钢铁股份有限公司 | Low-carbon alkaline molten steel heat-preservation covering agent and preparation method thereof |
-
1987
- 1987-11-04 CN CN 87107620 patent/CN1008797B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1032959A (en) | 1989-05-17 |
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Legal Events
| Date | Code | Title | Description |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |