CN101214543A - Method for repairing inner lining of tundish - Google Patents
Method for repairing inner lining of tundish Download PDFInfo
- Publication number
- CN101214543A CN101214543A CNA2007101592675A CN200710159267A CN101214543A CN 101214543 A CN101214543 A CN 101214543A CN A2007101592675 A CNA2007101592675 A CN A2007101592675A CN 200710159267 A CN200710159267 A CN 200710159267A CN 101214543 A CN101214543 A CN 101214543A
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- China
- Prior art keywords
- repairing
- tundish
- phosphoric acid
- inner lining
- middle package
- 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.)
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Abstract
The invention relates to a middle package liner repairing method. The method adopts a hot repairing mode for a the middle package for a lower line; under a temperature of 100 to 140 DEG C, firstly cleans the position of the middle package of a body needed repairing, then spray a phosphoric acid wedding agent uniformly on the position to be repaired; uniformly coats the hot repairing material after mixed on the position to be repaired with a coating thickness of 4 to 6mm higher than the surface of the body. The method directly uses the repairing material with no water to carry through hot repairing on the crack or defective part of the liner for the middle package turning over the lower line, improves the turning over times of the middle package, reduces the consumption of the middle package and has a good repairing effect.
Description
Technical field
The present invention relates to a kind of tundish method for repairing inner lining.
Background technology
After casting finished the tundish disintegration, the tundish liner had crackle or damaged phenomenon in various degree, if continue directly to use, will influence production safety; The process of reorganizing and outfit of original cold repair feed supplement is: after tundish cools off fully, use steel plate to make special-purpose mold, in the tundish inner support, in the space of pouring into after the material for repairing stirring between mold and the tundish body, tie a knot with vibrator, mold and bracing frame are taken out in health after 12 hours, carry out drying again and the baking that heats up, and reorganize and outfit process need about 5 days.The more time-consuming material that takes of traditional cold repair compensating method can cause difficulty to the normal turnover of tundish.The material for repairing main component is that cement, high grade bauxite grog, water stir and forms, and occurs slight crack after the repairing sometimes.
Summary of the invention
The purpose of this invention is to provide a kind of tundish method for repairing inner lining, the tundish that this method rolls off the production line to turnover directly carries out hot repair with moisture free material for repairing to liner crackle or damaged part, improved the number of turnover of tundish, reduced the consumption of tundish, repair efficiency is good.
For achieving the above object, the present invention realizes by the following technical solutions:
A kind of tundish method for repairing inner lining, it is characterized in that this method adopts the mode of hot repair to the tundish that rolls off the production line, under temperature 100-140 ℃ condition, earlier tundish body position to be repaired is cleaned out, waiting that repairing the position evenly sprays the phosphoric acid bond then, again mixed thermal repairing material is being waited that repairing the position evenly smears, smearing thickness is a little more than body surface 4-6mm.
Material for repairing is to be made by weight proportion by following compositions:
Corundum, 150 orders, 250 orders, 8-15
The high grade bauxite grog, granularity 1-5mm, 60-80
Aluminum-spinel, granularity 1-5mm, 3-6
Mullite ultra micro powder, 250-300 order, 1-3
Additive 0.5-1.5
Cement 0-5
Described additive is one or more mixing in pure silicon powder, explosion-proof fiber or the steel fibre.
In the described mullite ultra micro powder, α-Al
2O
3With SiO
2Ratio be 1: 1.
After above-mentioned raw materials mixes, make material for repairing, in use, the part by weight of phosphoric acid bond and material for repairing is 1: 5.
Compared with prior art, the invention has the beneficial effects as follows:
Add an amount of bond by test in the liner stamp mass, the middle bag that turnover is rolled off the production line directly carries out hot repair with moisture free material for repairing to crackle or damaged part, and the middle bag of hot repair is normally reorganized and outfit, and reaches the standard grade then.Make tundish can continue turnover and use, do not influence production and carry out smoothly, improved the number of turnover of middle bag, reduced the consumption of middle Bao Naicai.
In the use of tundish body heat material for repairing, the phosphoric acid bond can improve its serviceability and workability.Use the phosphoric acid bond not only can improve the working viscosity of inclusion thermal repairing material, can also shorten its conditioned time greatly, the tundish after the repairing can directly be used, do not influence the turnaround time of tundish.Show after deliberation, use the phosphoric acid bond to repair with the tundish body heat and cooperate at 1: 5 in proportion that behind overbaking, tundish body heat material for repairing intensity is increased, medium temperature intensity descends few, the high temperature serviceability is better.
In use, the average prolongation tundish life-span is more than 200 jars, this kind tundish body heat material for repairing shows according to experiment, and the line variation after 1550-1650 ℃ burning of this material all is microdilatancy, can stop up pore, the crackle that buffering is given birth to because of contraction can improve resistance to slag, and inclusion is repaired and required performance in the middle of meeting fully, intensity rate is about 1 after oven dry and the 1000 ℃ of burnings, helps toasting.Wherein, the AL that brings into by aluminum-spinel
2O
3, can promote spinelle to generate and crystal development as nucleus, can improve the resistance to slag of tundish body heat material for repairing like this; Through the reasonable composition of particle, the apparent gas rate of aluminum-spinel fire resistant materials is low and bulk density is higher, and particularly a material of matrix material is formed advancedly, can more fully fill space between all kinds of particulate material and obtains DB.
The specific embodiment
Embodiment 1
A kind of tundish method for repairing inner lining, this method adopts the mode of hot repair to the tundish that rolls off the production line, under temperature 100-140 ℃ condition, earlier tundish body position to be repaired is cleaned out, waiting that repairing the position evenly sprays the phosphoric acid bond then, again mixed thermal repairing material is being waited that repairing the position evenly smears, smearing thickness is a little more than body surface 4-6mm.It is firm, dry to rely on the body normal temperature to repair at once, and overall process needs 20 minutes, can normally use after directly smearing liner then.Material for repairing is to be made by weight proportion by following compositions:
Corundum, 150 orders-250 order, 10
The high grade bauxite grog, granularity 1-5mm, 70
Aluminum-spinel, granularity 1-5mm, 4
Mullite, α-Al
2O
3With SiO
2Ratio be 1: 1; The 250-300 order, 2
Additive pure silicon powder, explosion-proof fiber 1
Cement 2
After above-mentioned raw materials mixes, make material for repairing, in use, phosphoric acid bond (aluminium dihydrogen phosphate) is 1: 5 with the part by weight of material for repairing.
Embodiment 2
A kind of tundish method for repairing inner lining is with embodiment 1.
Material for repairing is to be made by weight proportion by following compositions:
Corundum, 150 orders-250 order, 15
The high grade bauxite grog, granularity 1-5mm, 80
Aluminum-spinel, granularity 1-5mm, 6
Mullite, α-Al
2O
3With SiO
2Ratio be 1: 1; The 250-300 order, 3
Additive (pure silicon powder, explosion-proof fiber, steel fibre mix) 1.5
Cement 5
After above-mentioned raw materials mixes, make material for repairing, in use, phosphoric acid bond (aluminium dihydrogen phosphate) is 1: 5 with the part by weight of material for repairing.
Embodiment 3
A kind of tundish method for repairing inner lining is with embodiment 1.
Material for repairing is to be made by weight proportion by following compositions:
Corundum, 150 orders-250 order, 8
The high grade bauxite grog, granularity 1-5mm, 60
Aluminum-spinel, granularity 1-5mm, 3
Mullite, α-Al
2O
3With SiO
2Ratio be 1: 1; The 250-300 order, 1
The explosion-proof fiber of additive, steel fibre 0.5
After above-mentioned raw materials mixes, make material for repairing, in use, phosphoric acid bond (aluminium dihydrogen phosphate) is 1: 5 with the part by weight of material for repairing.
Claims (2)
1. tundish method for repairing inner lining, it is characterized in that this method adopts the mode of hot repair to the tundish that rolls off the production line, under temperature 100-140 ℃ condition, earlier tundish body position to be repaired is cleaned out, waiting that repairing the position evenly sprays the phosphoric acid bond then, again mixed thermal repairing material is being waited that repairing the position evenly smears, smearing thickness is a little more than body surface 4-6mm.
2. a kind of tundish method for repairing inner lining according to claim 1, it is characterized in that described material for repairing be by following compositions by weight ratio make:
Corundum, 150 orders-250 order, 8-15
The high grade bauxite grog, granularity 1-5mm, 60-80
Aluminum-spinel, granularity 1-5mm, 3-6
Mullite, 250-300 order, 1-3
Additive 0.5-1.5
Cement 0-5
Described additive is one or more mixing in pure silicon powder, explosion-proof fiber or the steel fibre;
In the described mullite, α-Al
2O
3With SiO
2Ratio be 1: 1;
After above-mentioned raw materials mixes, make material for repairing, in use, add the phosphoric acid bond, the part by weight of phosphoric acid bond and material for repairing is 1: 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101592675A CN100560252C (en) | 2007-12-28 | 2007-12-28 | A kind of tundish method for repairing inner lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101592675A CN100560252C (en) | 2007-12-28 | 2007-12-28 | A kind of tundish method for repairing inner lining |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101214543A true CN101214543A (en) | 2008-07-09 |
| CN100560252C CN100560252C (en) | 2009-11-18 |
Family
ID=39621082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101592675A Active CN100560252C (en) | 2007-12-28 | 2007-12-28 | A kind of tundish method for repairing inner lining |
Country Status (1)
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| CN (1) | CN100560252C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775159A (en) * | 2012-07-11 | 2012-11-14 | 邯郸开发区鑫福冶金科技有限公司 | Permeable dry stamp mass for furnace bottom of intermediate frequency furnace |
| CN102962445A (en) * | 2012-11-22 | 2013-03-13 | 河南省西保冶材集团有限公司 | Baking-free long water gap for large-plate-blank continuous casing low-carbon and low-silicon steel and preparation process of baking-free long water gap |
| CN104725053A (en) * | 2013-12-18 | 2015-06-24 | 上海宝钢工业技术服务有限公司 | Repair material for carbon-free refining ladle lining non-slag line and preparation method thereof |
| CN104858432A (en) * | 2015-05-28 | 2015-08-26 | 江苏共昌轧辊股份有限公司 | Constant-flow-velocity bottom leakage crucible with high slag removal performance and used for jet forming |
| CN107695329A (en) * | 2017-09-18 | 2018-02-16 | 北京利尔高温材料股份有限公司 | A kind of carbon-free ladle wall application process |
| CN111995408A (en) * | 2020-08-18 | 2020-11-27 | 武汉钢铁集团耐火材料有限责任公司 | Repairing material and repairing method for working layer at bottom of molten iron tank |
| CN112409001A (en) * | 2020-11-24 | 2021-02-26 | 瑞泰马钢新材料科技有限公司 | Aluminum-magnesium repairing material for steel ladle and preparation method thereof |
| CN116375485A (en) * | 2023-03-22 | 2023-07-04 | 中钢洛耐科技股份有限公司 | Aluminate cement combined unshaped refractory repair material and preparation method thereof |
-
2007
- 2007-12-28 CN CNB2007101592675A patent/CN100560252C/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775159A (en) * | 2012-07-11 | 2012-11-14 | 邯郸开发区鑫福冶金科技有限公司 | Permeable dry stamp mass for furnace bottom of intermediate frequency furnace |
| CN102962445A (en) * | 2012-11-22 | 2013-03-13 | 河南省西保冶材集团有限公司 | Baking-free long water gap for large-plate-blank continuous casing low-carbon and low-silicon steel and preparation process of baking-free long water gap |
| CN104725053A (en) * | 2013-12-18 | 2015-06-24 | 上海宝钢工业技术服务有限公司 | Repair material for carbon-free refining ladle lining non-slag line and preparation method thereof |
| CN104725053B (en) * | 2013-12-18 | 2019-02-15 | 上海宝钢工业技术服务有限公司 | Carbon-free non-slag line material for repairing of refining ladle liner and preparation method thereof |
| CN104858432A (en) * | 2015-05-28 | 2015-08-26 | 江苏共昌轧辊股份有限公司 | Constant-flow-velocity bottom leakage crucible with high slag removal performance and used for jet forming |
| CN107695329A (en) * | 2017-09-18 | 2018-02-16 | 北京利尔高温材料股份有限公司 | A kind of carbon-free ladle wall application process |
| CN111995408A (en) * | 2020-08-18 | 2020-11-27 | 武汉钢铁集团耐火材料有限责任公司 | Repairing material and repairing method for working layer at bottom of molten iron tank |
| CN112409001A (en) * | 2020-11-24 | 2021-02-26 | 瑞泰马钢新材料科技有限公司 | Aluminum-magnesium repairing material for steel ladle and preparation method thereof |
| CN116375485A (en) * | 2023-03-22 | 2023-07-04 | 中钢洛耐科技股份有限公司 | Aluminate cement combined unshaped refractory repair material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100560252C (en) | 2009-11-18 |
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