CN104230360A - Processing method of argon blowing gun - Google Patents
Processing method of argon blowing gun Download PDFInfo
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- CN104230360A CN104230360A CN201410486870.4A CN201410486870A CN104230360A CN 104230360 A CN104230360 A CN 104230360A CN 201410486870 A CN201410486870 A CN 201410486870A CN 104230360 A CN104230360 A CN 104230360A
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- argon blowing
- blowing lance
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- baking
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Abstract
The invention discloses a processing method of an argon blowing gun, and belongs to the field of molten steel purification plants. The processing method of the argon blowing gun comprises the steps of burdening, vibration molding, demolding, roasting, checking and storing. The argon blowing gun which is prepared by adjusting a formula of flame retardant coating castable and adopting the particular roasting technology can resist the high temperature of 1670-1750 DEG C, has the characteristics of high strength, scouring resistance, corrosion resistance, high blowing rate, good safety, long service life and the like, and can meet the requirements on molten steel purification of continuous casting steel ladles and external refining steel ladles, steel temperature uniform control and refining.
Description
Technical field
The present invention relates to molten steel purification equipment field, specifically, relate to a kind of working method of argon blowing lance.
Background technology
The external refining of molten steel is the refining task completing in general steel melting furnace, as desulfurization, deoxidation, degasification, removal non-metallic inclusion, the composition adjusting steel and molten steel temperature etc., carries out in " ladle " outside stove or special container.Process for making is divided into two steps carry out: the first, in general steel melting furnace, carries out fusing and just refining, be called just furnace; The second, in ladle or special refining vessel, carry out refining.Secondary refining method generally has the method such as interpolation of wash heat, Argon, vacuum, heating and solid material.
At present, the general selection of a lot of manufacturer is ar blowing refining, because argon blowing lance cost is low, use and change conveniently, and by argon blowing lance ar blowing refining, argon gas is blown into molten steel inside, because it does not dissolve molten steel, also not with just in element compounds, can not non-metallic inclusion be formed. the molten steel boiling that Argon is formed, material transfer between slag can be accelerated, the non-metallic inclusion of molten steel dissolved gases and suspension can not only be removed, aseptic, and certain deoxidation work can also be played, be conducive to deoxidation, the carrying out of desulphurization reaction, accelerate the even of liquid steel temperature and composition.Argon blowing lance demoulding curing time of the prior art is about 2-3 days, and curing time is long, and reduce production efficiency, its key is to carry out new research and optimization, to reduce demoulding curing time to the flame retardant coating mould material component of argon blowing lance; The shortcomings such as it is bad that existing argon blowing lance also exists high-temperature resistant result, fragile, and work-ing life is short.
Through retrieval, also there is no relevant report by improving argon blowing lance preparation technology to overcome above-mentioned defect at present.
Summary of the invention
The technical problem solved
In order to solve problems of the prior art, the invention provides a kind of argon blowing lance, the advantages such as it is short that this argon blowing lance has demould time, long service life, high temperature resistant.
Technical scheme
For achieving the above object, the present invention adopts following technical scheme:
A working method for argon blowing lance, comprises the following steps:
Step one, batching:
Take 65%-78% bauxite chamotte by weight percentage, 9%-18% high-alumina cement adds in stirrer successively, stir after 1-2 minute, slowly add 5%-10% steel fiber, limit edged stirs 2-3 minute, add 3%-7% silicon powder again, stir 2-3 minute, finally add 5%-15% water glass and suitable quantity of water stirring 2-3 minute, make raw material stirring even, obtain raw mixture;
Step 2, vibrating forming, the demoulding:
After cleaning argon blowing lance mould inner wall, coat machine oil, fix the position of rifle core, rifle core block suitable for reading is obturaged, closed die, it is tightened, and hangs on shaking table and fix, all directions uniform feeding of circumference on mould, feed in raw material while vibrate, after placing 12-18 hour after vibratory compaction, the demoulding, then place 10-12 hour;
Step 3, baking:
Argon blowing lance step 2 obtained is placed in drying shed and toasts, control temperature is 25 DEG C-120 DEG C, toast after 24 hours, temperature regulating is that 130-200 DEG C of baking is after 24 hours again, temperature regulating is that 210-280 DEG C of baking is after 24 hours, be incubated 24 hours when temperature is 280 DEG C, be finally cooled to normal temperature, obtain product;
Step 4, by the argon blowing lance after baking, through putting in storage after the assay was approved.
Further, the stirring velocity in described step one is 2500r/min-3000r/min.
Further, during batching, the weight summation of each component is less than or equal to 300 kilograms.
Further, the content of the water in step one is the 18%-25% of the total amount of bauxite chamotte, high-alumina cement, steel fiber, silicon powder and water glass.
Further, aluminium sesquioxide content 70%-85% in described bauxite chamotte, ferric oxide content is less than or equal to 1.5%; Potassium oxide and sodium oxide content are comprehensively less than or equal to 0.4%; The volume density of bauxite chamotte is more than or equal to 3.15g/cm
3.
Further, the content 50%-60% of aluminium sesquioxide in described high-alumina cement, ferric oxide is less than or equal to 2.5%; The particle diameter of high-alumina cement is 0.045mm.
Further, the equivalent diameter 1.0mm of described steel fiber; Staple length 50mm; The tensile strength of steel fiber is more than or equal to 1000Mpa.
Further, the density of water glass is 1.526-1.599g/cm
3.
Further, in described silicon powder, the content of silicon-dioxide is 90%-96%.
Beneficial effect
Adopt technical scheme of the present invention, compared with prior art, there is following remarkable advantage:
1, the flame retardant coating mould material of argon blowing lance of the present invention, adopt bauxite chamotte, high-alumina cement, steel fiber, silicon powder and water glass formulated as its component, the demoulding curing time of mould material of the present invention when being applied to making argon blowing lance is reduced greatly, demoulding preserving period 12-18 hour, and maintenance 10-12 hour after the demoulding;
2, argon blowing lance of the present invention heats baking by laddering, cured effect is good, quality product is high, high temperature resistant 1670 DEG C-1750 DEG C, has intensity high, antiscour, corrosion-resistant, blow through rate high, security is good, the features such as long service life, can meet the needs of Con casting ladle, external refining ladle purify hot metal, all control steel temperature and refining.
Embodiment
Below in conjunction with embodiment, the present invention is further detailed explanation.
Embodiment 1
A working method for argon blowing lance, comprises the following steps:
Step one, batching:
Take 72kg bauxite chamotte by weight percentage, 11kg high-alumina cement adds in stirrer successively, stir after 1-2 minute, slowly add 7kg steel fiber, limit edged stirs 2-3 minute, then adds 5kg silicon powder, stirs 2-3 minute, finally add 5kg water glass and 18kg water stirring 2-3 minute, make raw material stirring even, obtain flame retardant coating mould material, stirring velocity is 2500r/min;
Step 2, vibrating forming, the demoulding:
After cleaning argon blowing lance mould inner wall, coat machine oil, fix the position of rifle core, rifle core block suitable for reading is obturaged, closed die, it is tightened, and hangs on shaking table and fix, all directions uniform feeding of circumference on mould, feed in raw material while vibrate, place after vibratory compaction after 12 hours, the demoulding, then place 10 hours;
Step 3, baking:
Argon blowing lance step 2 obtained is placed in drying shed and toasts, and control temperature is 25 DEG C, toasts after 24 hours, again temperature regulating be 130 DEG C baking 24 hours after, temperature regulating be 210 DEG C baking 24 hours after, be incubated 24 hours when temperature regulating is 280 DEG C, finally be cooled to normal temperature, obtain product;
Step 4, by the argon blowing lance after baking, through putting in storage after the assay was approved.
Embodiment 2
A working method for argon blowing lance, comprises the following steps:
Step one, batching:
Take 65kg bauxite chamotte by weight percentage, 18kg high-alumina cement adds in stirrer successively, stir after 1-2 minute, slowly add 5kg steel fiber, limit edged stirs 2-3 minute, then adds 7kg silicon powder, stirs 2-3 minute, finally add 5kg water glass and 25kg water stirring 2-3 minute, make raw material stirring even, obtain flame retardant coating mould material, stirring velocity is 3000r/min;
Step 2, vibrating forming, the demoulding:
After cleaning argon blowing lance mould inner wall, coat machine oil, fix the position of rifle core, rifle core block suitable for reading is obturaged, closed die, it is tightened, and hangs on shaking table and fix, all directions uniform feeding of circumference on mould, feed in raw material while vibrate, place after vibratory compaction after 18 hours, the demoulding, then place 12 hours;
Step 3, baking:
Argon blowing lance step 2 obtained is placed in drying shed and toasts, and control temperature is 120 DEG C, toasts after 24 hours, again temperature regulating be 200 DEG C baking 24 hours after, temperature regulating be 280 DEG C baking 24 hours after, be incubated 24 hours when temperature is 280 DEG C, finally be cooled to normal temperature, obtain product;
Step 4, by the argon blowing lance after baking, through putting in storage after the assay was approved.
Embodiment 3
A working method for argon blowing lance, comprises the following steps:
Step one, batching:
Take 65kg bauxite chamotte by weight percentage, 9kg high-alumina cement adds in stirrer successively, stir after 1-2 minute, slowly add 8kg steel fiber, limit edged stirs 2-3 minute, then adds 3kg silicon powder, stirs 2-3 minute, finally add 15kg water glass and 20kg water stirring 2-3 minute, make raw material stirring even, obtain flame retardant coating mould material, stirring velocity is 3000r/min;
Step 2, vibrating forming, the demoulding:
After cleaning argon blowing lance mould inner wall, coat machine oil, fix the position of rifle core, rifle core block suitable for reading is obturaged, closed die, it is tightened, and hangs on shaking table and fix, all directions uniform feeding of circumference on mould, feed in raw material while vibrate, place after vibratory compaction after 15 hours, the demoulding, then place 11 hours;
Step 3, baking:
Argon blowing lance step 2 obtained is placed in drying shed and toasts, and control temperature is 75 DEG C, toasts after 24 hours, again temperature regulating be 165 DEG C baking 24 hours after, temperature regulating be 245 DEG C baking 24 hours after, be incubated 24 hours when temperature regulating is 280 DEG C, finally be cooled to normal temperature, obtain product;
Step 4, by the argon blowing lance after baking, through putting in storage after the assay was approved.
Embodiment 4
A working method for argon blowing lance, comprises the following steps:
Step one, batching:
Take 78kg bauxite chamotte by weight percentage, 9kg high-alumina cement adds in stirrer successively, stir after 1-2 minute, slowly add 5kg steel fiber, limit edged stirs 2-3 minute, then adds 3kg silicon powder, stirs 2-3 minute, finally add 5kg water glass and suitable quantity of water stirring 2-3 minute, make raw material stirring even, obtain flame retardant coating mould material, stirring velocity is 2700r/min;
Step 2, vibrating forming, the demoulding:
After cleaning argon blowing lance mould inner wall, coat machine oil, fix the position of rifle core, rifle core block suitable for reading is obturaged, closed die, it is tightened, and hangs on shaking table and fix, all directions uniform feeding of circumference on mould, feed in raw material while vibrate, place after vibratory compaction after 18 hours, the demoulding, then place 12 hours;
Step 3, baking:
Argon blowing lance step 2 obtained is placed in drying shed and toasts, and control temperature is 90 DEG C, toasts after 24 hours, again temperature regulating be 170 DEG C baking 24 hours after, temperature regulating be 250 DEG C baking 24 hours after, be incubated 24 hours when temperature regulating is 280 DEG C, finally be cooled to normal temperature, obtain product;
Step 4, by the argon blowing lance after baking, through putting in storage after the assay was approved.
Embodiment 5
A working method for argon blowing lance, comprises the following steps:
Step one, batching:
Take 65kg bauxite chamotte by weight percentage, 14kg high-alumina cement adds in stirrer successively, stir after 1-2 minute, slowly add 10kg steel fiber, limit edged stirs 2-3 minute, then adds 3kg silicon powder, stirs 2-3 minute, finally add 8kg water glass and suitable quantity of water stirring 2-3 minute, make raw material stirring even, obtain flame retardant coating mould material, stirring velocity is 3000r/min;
Step 2, vibrating forming, the demoulding:
After cleaning argon blowing lance mould inner wall, coat machine oil, fix the position of rifle core, rifle core block suitable for reading is obturaged, closed die, it is tightened, and hangs on shaking table and fix, all directions uniform feeding of circumference on mould, feed in raw material while vibrate, place after vibratory compaction after 18 hours, the demoulding, then place 10 hours;
Step 3, baking:
Argon blowing lance step 2 obtained is placed in drying shed and toasts, and control temperature is 50 DEG C, toasts after 24 hours, again temperature regulating be 150 DEG C baking 24 hours after, temperature regulating be 270 DEG C baking 24 hours after, be incubated 24 hours when temperature regulating is 280 DEG C, finally be cooled to normal temperature, obtain product;
Step 4, by the argon blowing lance after baking, through putting in storage after the assay was approved.
The flame retardant coating mould material of argon blowing lance of the present invention, adopt bauxite chamotte, high-alumina cement, steel fiber, silicon powder and water glass formulated as its component, the demoulding curing time of mould material of the present invention when being applied to making argon blowing lance is reduced greatly, demoulding preserving period 12-18 hour, and maintenance 10-12 hour after the demoulding.
Argon blowing lance of the present invention heats baking by laddering, cured effect is good, quality product is high, high temperature resistant 1670 DEG C-1750 DEG C, has intensity high, antiscour, corrosion-resistant, blow through rate high, security is good, the features such as long service life, can meet the needs of Con casting ladle, external refining ladle purify hot metal, all control steel temperature and refining.
Claims (9)
1. a working method for argon blowing lance, is characterized in that, comprises the following steps:
Step one, batching:
Take 65%-78% bauxite chamotte by weight percentage, 9%-18% high-alumina cement adds in stirrer successively, stir after 1-2 minute, slowly add 5%-10% steel fiber, limit edged stirs 2-3 minute, add 3%-7% silicon powder again, stir 2-3 minute, finally add 5%-15% water glass and suitable quantity of water stirring 2-3 minute, make raw material stirring even, obtain flame retardant coating mould material;
Step 2, vibrating forming, the demoulding:
After cleaning argon blowing lance mould inner wall, coat machine oil, fix the position of rifle core, rifle core block suitable for reading is obturaged, closed die, tighten it, and hang on shaking table and fix, on mould, all directions of circumference evenly throw mould material, feed in raw material while vibrate, after placing 12-18 hour after vibratory compaction, the demoulding, then place 10-12 hour;
Step 3, baking:
Argon blowing lance step 2 obtained is placed in drying shed and toasts, control temperature is 25 DEG C-120 DEG C, toast after 24 hours, temperature regulating is that 130-200 DEG C of baking is after 24 hours again, temperature regulating is that 210-280 DEG C of baking is after 24 hours, be incubated 24 hours when temperature is 280 DEG C, be finally cooled to normal temperature, obtain product;
Step 4, by the argon blowing lance after baking, through putting in storage after the assay was approved.
2. the working method of a kind of argon blowing lance as claimed in claim 1, is characterized in that, the stirring velocity in described step one is 2500r/min-3000r/min.
3. the working method of a kind of argon blowing lance as claimed in claim 1, is characterized in that, during batching, the weight summation of each component is less than or equal to 300 kilograms.
4. the working method of a kind of argon blowing lance as claimed in claim 1, is characterized in that, the content of the water in step one is the 18%-25% of the total amount of bauxite chamotte, high-alumina cement, steel fiber, silicon powder and water glass.
5. the working method of a kind of argon blowing lance as claimed in claim 1, is characterized in that, aluminium sesquioxide content 70%-85% in described bauxite chamotte, and ferric oxide content is less than or equal to 1.5%; Potassium oxide and sodium oxide content are comprehensively less than or equal to 0.4%; The volume density of bauxite chamotte is more than or equal to 3.15g/cm
3.
6. the working method of a kind of argon blowing lance as claimed in claim 1, is characterized in that, the content 50%-60% of aluminium sesquioxide in described high-alumina cement, and ferric oxide is less than or equal to 2.5%; The particle diameter of high-alumina cement is 0.045mm.
7. the working method of a kind of argon blowing lance as claimed in claim 1, is characterized in that, the equivalent diameter 1.0mm of described steel fiber; Staple length 50mm; The tensile strength of steel fiber is more than or equal to 1000Mpa.
8. the working method of a kind of argon blowing lance as claimed in claim 1, is characterized in that, the density of water glass is 1.526-1.599g/cm
3.
9. the working method of a kind of argon blowing lance as claimed in claim 1, is characterized in that, in described silicon powder, the content of silicon-dioxide is 90%-96%.
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| CN201410486870.4A CN104230360B (en) | 2014-09-22 | 2014-09-22 | A kind of working method of argon blowing lance |
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| CN201410486870.4A CN104230360B (en) | 2014-09-22 | 2014-09-22 | A kind of working method of argon blowing lance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942231A (en) * | 2015-06-30 | 2015-09-30 | 共享装备有限公司 | Manufacturing method of ceramic sprue cup for casting |
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| CN101734934A (en) * | 2009-10-28 | 2010-06-16 | 郑州真金耐火材料有限责任公司 | High-strength steel fibre castable |
| CN102030547A (en) * | 2010-11-05 | 2011-04-27 | 王洪金 | Unfired pyrophyllite hot metal ladle lining material and preparation method thereof |
| CN102491771A (en) * | 2011-12-06 | 2012-06-13 | 安徽瑞泰新材料科技有限公司 | Composite castable refractory |
| CN102617169A (en) * | 2012-03-31 | 2012-08-01 | 武汉科技大学 | Corundum and spinel castable and preparation method thereof |
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2014
- 2014-09-22 CN CN201410486870.4A patent/CN104230360B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101121609A (en) * | 2007-07-19 | 2008-02-13 | 张富财 | Baking-free hot-metal bottle lining brick |
| CN101734934A (en) * | 2009-10-28 | 2010-06-16 | 郑州真金耐火材料有限责任公司 | High-strength steel fibre castable |
| CN102030547A (en) * | 2010-11-05 | 2011-04-27 | 王洪金 | Unfired pyrophyllite hot metal ladle lining material and preparation method thereof |
| CN102491771A (en) * | 2011-12-06 | 2012-06-13 | 安徽瑞泰新材料科技有限公司 | Composite castable refractory |
| CN102617169A (en) * | 2012-03-31 | 2012-08-01 | 武汉科技大学 | Corundum and spinel castable and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104942231A (en) * | 2015-06-30 | 2015-09-30 | 共享装备有限公司 | Manufacturing method of ceramic sprue cup for casting |
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