CN101798233B - Riser heating and insulating agent - Google Patents
Riser heating and insulating agent Download PDFInfo
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- CN101798233B CN101798233B CN2010101097133A CN201010109713A CN101798233B CN 101798233 B CN101798233 B CN 101798233B CN 2010101097133 A CN2010101097133 A CN 2010101097133A CN 201010109713 A CN201010109713 A CN 201010109713A CN 101798233 B CN101798233 B CN 101798233B
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- riser
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Abstract
The invention discloses a riser heating and insulating agent, which comprises the following components in percentage by weight: 5 to 35 percent of Al, 10 to 25 percent of AlN, 3 to 20 percent of low-carbon graphite, 5 to 25 percent of magnesia-alumina spinel, 5 to 15 percent of quartz, 10 to 30 percent of ferric oxide powder, 5 to 20 percent of corundum, 5 to 10 percent of organosilicon phlogopite, and 1 to 10 percent of MgO; and the riser heating and insulating agent is prepared by the following processes: crushing, pulverizing, mixing, pelletizing, drying, and the like. The riser heating and insulating agent has double effects of heating and insulating, and has good insulating effect. Because the riser heating and insulating agent has a granular appearance, dust and smoke are not generated in the using process, and the environment is not polluted. Due to the adoption of the low-carbon graphite, castings do not have carburizing phenomenon, and the molten steel is not polluted. The riser heating and insulating agent is particularly applied to open risers of low carbon steel large-scale steel castings and stainless steel castings with the weight of over 80 tons.
Description
Technical field
The present invention relates to the metal casting production technical field, be specifically related to the riser heating and insulating agent that stainless cast steel part and weight are used when the Foundry Production greater than the soft steel large-scale steel-casting more than 80 tons.
Background technology
The soft steel large-scale steel-casting is widely used in power station, petrochemical complex, metallurgy, boats and ships and equipment manufacture industry; Like the pump housing in the nuclear power generating equipment, steam turbine cylinder; The runner of Hydropower Unit, blade; Cylinder body spare in the fired power generating unit, the roll housing in the large-scale metallurgical equipment, roll, large size bearing seat etc.Up to the present; Weight has had sophisticated production theory and knowhow at the steel casting below 50 tons, and the steel casting quality below 50 tons can be controlled, but to weight at the steel casting more than 50 tons; All also there are not mature theory and experience both at home and abroad; A large amount of waste products appears in the steel casting poor quality of producing, thereby has caused huge economic waste.In the steel Foundry Production, the process of setting of liquid metal is the important stage that foundry goods forms, and many casting flaws such as shrinkage porosite, shrinkage cavity, crackle etc. all produce in this process, and soft steel casting solidification TR is wide, is prone to form shrinkage cavity, shrinkage defect.All more than 50 tons, the molten steel requirement is big for the general weight of large-scale steel-casting, and the casting solidification time is long, and shrinkage is big, and casting technique is complicated, and the size of foundry goods is big more, and defective just is difficult to control more.
Riser head heat-preserving is one of effective ways of control steel casting quality, and wherein riser heating and insulating agent also is that the selection of rising head insulating covering agent is particularly important.In order to make the steel casting of producing up-to-standard, necessarily require the heating of rising head insulating covering agent, heat insulation effect good, guarantee rising head molten steel final set.At present, China's foundry enterprise generally uses plant ash, flyash and charring rice husk as the steel casting riser heating and insulating agent.But plant ash and flyash store trouble, severe contamination Working environment in the use, and also heat insulation effect is relatively poor; The fusing point of charring rice husk surpasses liquid steel temperature, play the effect of carbon skeleton, but spreadability is poor, and heat insulation effect is unstable, for low-carbon (LC) or ultralow-carbon steel grade the tendency of carburetting is arranged, and is easy to crust, and environmental pollution is also bigger.
In addition, the chemical ingredients of stainless cast steel part requires carbon content low, in castingprocesses, often owing to use traditional rising head insulating covering agent to make foundry goods produce the carburetting phenomenon, pollutes foundry goods.
Summary of the invention
The purpose of this invention is to provide a kind of riser heating and insulating agent, this riser heating and insulating agent uses when being fit to Foundry Production soft steel large-scale steel-casting and stainless cast steel part.
In order to realize above purpose, the technical scheme that the present invention adopted is: a kind of riser heating and insulating agent, process by following components in weight percentage content:
Al： 5～35％ AlN： 10～25％
Low-carbon-content graphite: 3～20% magnesium-aluminium spinels: 5～25%
Quartzy: 5～15% brown iron oxides: 10～30%
Corundum: 5～20% organosilicon phlogopite: 5～10%
MgO： 1～10％。
Further, this riser heating and insulating agent is processed by following components in weight percentage content:
Al： 10～20％ AlN： 10～20％
Low-carbon-content graphite: 5～10% magnesium-aluminium spinels: 10～15%
Quartzy: 5～10% brown iron oxides: 10～15%
Corundum: 5～10% organosilicon phlogopite: 5～8%
MgO： 1～3％。
Again further, this riser heating and insulating agent is processed by following components in weight percentage content:
Al： 18％ AlN： 16％
Low-carbon-content graphite: 8% magnesium-aluminium spinel: 15%
Quartzy: 9% brown iron oxide: 14%
Corundum: 10% organosilicon phlogopite: 7%
MgO： 3％。
The preparation method of riser heating and insulating agent of the present invention is: the weight percentage according to each component takes by weighing each component, through operations such as fragmentation, abrasive dust, mixing, granulation, oven dry, makes riser heating and insulating agent afterwards.Riser heating and insulating agent of the present invention is a particulate state.
Riser heating and insulating agent of the present invention is after fusing, and matrix is loose.Wherein component Al, brown iron oxide (Fe
2O
3), AlN plays heating functioin; Low-carbon-content graphite has heating and expansion, helps above rising head promptly drawout and forms resist; Magnesium-aluminium spinel (MgOAl
2O
3) help generating heat and form the slag liquid layer of polynuclear plane, reduced radiation heat loss and convection current heat waste, can play heat insulating effect effectively; Quartzy (SiO
2) and corundum (Al
2O
3) form high temperature resistant skeleton, avoided the collapse phenomenon in the use, keep loose cellular weave construction, higher intensity and voidage are arranged, reduced Thermal Conductivity at High Temperature; Organosilicon phlogopite and Natural manganese dioxide (MgO) play high temperature resistant heat insulating function.Riser heating and insulating agent of the present invention has heating, insulation double effect, and heat insulating effect is good; Because the outward appearance of this riser heating and insulating agent is particulate state, in use free from dust smog is free from environmental pollution; Adopt low-carbon-content graphite, foundry goods does not produce the carburetting phenomenon, does not pollute molten steel, is particularly suitable for weight and uses greater than soft steel large-scale steel-casting more than 80 tons and stainless cast steel part open top.
Adopt riser heating and insulating agent of the present invention, can guarantee the consecutive solidification of foundry goods and effective feeding of molten steel, foundry goods does not produce shrinkage cavity, shrinkage defect, solidifies back rising head end face and is U type, dense structure, has solved the difficult problem of large-scale soft steel castings production.Simultaneously, insulating covering agent does not pollute molten steel, and foundry goods does not produce the carburetting phenomenon, is fit to the stainless cast steel part open top and uses.
Embodiment
Embodiment 1
A kind of riser heating and insulating agent, process by following components in weight percentage content:
Al： 35％ AlN： 20％
Low-carbon-content graphite: 3% magnesium-aluminium spinel: 10%
Quartzy: 5% brown iron oxide: 15%
Corundum: 5% organosilicon phlogopite: 6%
MgO： 1％。
The performance index of this riser heating and insulating agent: thermal conductivity: 0.1126W/ (mK), fusing point: 1262 ℃.
Embodiment 2
A kind of riser heating and insulating agent, process by following components in weight percentage content:
Al： 5％ AlN： 25％
Low-carbon-content graphite: 5% magnesium-aluminium spinel: 5%
Quartzy: 15% brown iron oxide: 10%
Corundum: 20% organosilicon phlogopite: 5%
MgO： 10％。
The performance index of this riser heating and insulating agent: thermal conductivity: 0.1127W/ (mK), fusing point: 1280 ℃.
Embodiment 3
A kind of riser heating and insulating agent, process by following components in weight percentage content:
Al： 18％ AlN： 16％
Low-carbon-content graphite: 8% magnesium-aluminium spinel: 15%
Quartzy: 9% brown iron oxide: 14%
Corundum: 10% organosilicon phlogopite: 7%
MgO： 3％。
The performance index of this riser heating and insulating agent: thermal conductivity: 0.1132W/ (mK), fusing point: 1275 ℃.
Embodiment 4
A kind of riser heating and insulating agent, process by following components in weight percentage content:
Al： 20％ AlN： 10％
Low-carbon-content graphite: 10% magnesium-aluminium spinel: 5%
Quartzy: 10% brown iron oxide: 30%
Corundum: 5% organosilicon phlogopite: 8%
MgO： 2％。
The performance index of this riser heating and insulating agent: thermal conductivity: 0.1123W/ (mK), fusing point: 1261 ℃.
Embodiment 5
A kind of riser heating and insulating agent, process by following components in weight percentage content:
Al： 10％ AlN： 10％
Low-carbon-content graphite: 20% magnesium-aluminium spinel: 25%
Quartzy: 5% brown iron oxide: 10%
Corundum: 5% organosilicon phlogopite: 10%
MgO： 5％。
The performance index of this riser heating and insulating agent: thermal conductivity: 0.1139W/ (mK), fusing point: 1268 ℃.
The consumption of riser heating and insulating agent of the present invention is: according to the difference of rising head diameter, shown in the consumption of riser heating and insulating agent sees the following form.
Rising head diameter (mm) 200 300 400 500 600 700 800
Consumption (Kg) 0.6 1.4 3.0 5.3 7.9 11.5 17
What should explain at last is; Above instance only is illustrative rather than definitive thereof technical scheme of the present invention; Although the present invention is specified with reference to the foregoing description; Those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention, and not break away from any modification or the local replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (3)
1. a riser heating and insulating agent is characterized in that, this riser heating and insulating agent is processed by following components in weight percentage content:
Al： 5～35％ AlN： 10～25％
Low-carbon-content graphite: 3～20% magnesium-aluminium spinels: 5～25%
Quartzy: 5～15% brown iron oxides: 10～30%
Corundum: 5～20% organosilicon phlogopite: 5～10%
MgO： 1～10％。
2. riser heating and insulating agent according to claim 1 is characterized in that, this riser heating and insulating agent is processed by following components in weight percentage content:
Al： 10～20％ AlN： 10～20％
Low-carbon-content graphite: 5～10% magnesium-aluminium spinels: 10～15%
Quartzy: 5～10% brown iron oxides: 10～15%
Corundum: 5～10% organosilicon phlogopite: 5～8%
MgO： 1～3％。
3. riser heating and insulating agent according to claim 1 and 2 is characterized in that, preferably, this riser heating and insulating agent is processed by following components in weight percentage content:
Al： 18％ AlN： 16％
Low-carbon-content graphite: 8% magnesium-aluminium spinel: 15%
Quartzy: 9% brown iron oxide: 14%
Corundum: 10% organosilicon phlogopite: 7%
MgO： 3％。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101097133A CN101798233B (en) | 2010-02-10 | 2010-02-10 | Riser heating and insulating agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101097133A CN101798233B (en) | 2010-02-10 | 2010-02-10 | Riser heating and insulating agent |
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| Publication Number | Publication Date |
|---|---|
| CN101798233A CN101798233A (en) | 2010-08-11 |
| CN101798233B true CN101798233B (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101097133A Expired - Fee Related CN101798233B (en) | 2010-02-10 | 2010-02-10 | Riser heating and insulating agent |
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351554B (en) * | 2011-09-20 | 2013-04-24 | 水建龙 | Cast riser heat insulation agent |
| CN103420668A (en) * | 2012-05-21 | 2013-12-04 | 天津德仕能科技有限公司 | Heat-storing magnesia brick |
| CN102825218A (en) * | 2012-07-31 | 2012-12-19 | 马鞍山科润冶金材料有限公司 | Composite exothermic agent for high-manganese wear resistant steel |
| CN102816037B (en) * | 2012-07-31 | 2016-08-03 | 马鞍山科润冶金材料有限公司 | A kind of Compound exothermic mixture for high-temperature alloy steel |
| CN102826944B (en) * | 2012-07-31 | 2016-08-03 | 马鞍山科润冶金材料有限公司 | A kind of Composite exothermic agent for alloy tool steel |
| CN102814476B (en) * | 2012-07-31 | 2016-07-20 | 马鞍山科润冶金材料有限公司 | A kind of attapulgite preparing high-temp steel alloy composite heating agent |
| CN103551512B (en) * | 2013-11-15 | 2015-07-08 | 哈尔滨理工大学 | Exothermic insulating riser sleeve and preparation method thereof |
| CN103949592B (en) * | 2014-04-22 | 2016-05-18 | 焦作鸽德新材料有限公司 | A kind of casting heat preservation rising head combustion adjuvant |
| CN104084542B (en) * | 2014-06-26 | 2016-03-30 | 浙江锦诚耐火材料有限公司 | A kind of carbon-free heat preservation agent |
| CN104588623B (en) * | 2014-12-31 | 2017-01-25 | 中钢集团邢台机械轧辊有限公司 | Riser heat insulation agent of roll core and method for feeding riser |
| CN106111949A (en) * | 2016-08-15 | 2016-11-16 | 哈尔滨理工大学 | A kind of casting heat preservation agent |
| CN106180660B (en) * | 2016-08-15 | 2018-10-12 | 哈尔滨理工大学 | Steel-casting riser heating and insulating agent and preparation method thereof |
| CN107698267A (en) * | 2017-10-18 | 2018-02-16 | 唐宏泉 | A kind of riser heating and insulating agent and its preparation technology |
| CN111283151A (en) * | 2020-03-18 | 2020-06-16 | 山西太钢不锈钢股份有限公司 | Method for improving qualified rate of die casting flaw detection |
| CN113828740B (en) * | 2021-08-23 | 2023-04-07 | 武汉纺织大学 | Organic silicon slag heating and heat-insulating riser sleeve and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002115010A (en) * | 2000-10-10 | 2002-04-19 | Nippon Steel Corp | Method for manufacturing thin steel sheet by melting and slab cast by using the same |
| CN1371772A (en) * | 2001-02-23 | 2002-10-02 | 上海宝谊保温材料有限公司 | Alkaline granule steel ladle covering agent |
| CN1513624A (en) * | 2002-12-31 | 2004-07-21 | 上海宝谊保温材料有限公司 | Carbonless prremelt hollow type alkali pouring basket covering agent |
-
2010
- 2010-02-10 CN CN2010101097133A patent/CN101798233B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002115010A (en) * | 2000-10-10 | 2002-04-19 | Nippon Steel Corp | Method for manufacturing thin steel sheet by melting and slab cast by using the same |
| CN1371772A (en) * | 2001-02-23 | 2002-10-02 | 上海宝谊保温材料有限公司 | Alkaline granule steel ladle covering agent |
| CN1513624A (en) * | 2002-12-31 | 2004-07-21 | 上海宝谊保温材料有限公司 | Carbonless prremelt hollow type alkali pouring basket covering agent |
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| CN101798233A (en) | 2010-08-11 |
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