CN101817687A - Silicon steel hearth roll sleeve and preparation method thereof - Google Patents
Silicon steel hearth roll sleeve and preparation method thereof Download PDFInfo
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- CN101817687A CN101817687A CN200910273454A CN200910273454A CN101817687A CN 101817687 A CN101817687 A CN 101817687A CN 200910273454 A CN200910273454 A CN 200910273454A CN 200910273454 A CN200910273454 A CN 200910273454A CN 101817687 A CN101817687 A CN 101817687A
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- silicon steel
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Abstract
The invention relates to a silicon steel hearth roll sleeve and a preparation method thereof. The technical scheme of the method comprises the following steps of: mixing 2 to 10 weight percent of large particles of a dense carbon raw material, 2 to 10 weight percent of small particles of the dense carbon raw material, 80 to 95 weight percent of fine powder of the dense carbon raw material, and 0.3 to 2.0 weight percent of Si micro-powder, as well as 5 to 15 weight percent of phenolic resin based on the total amount of the raw materials; pressing the mixture into a blank of the silicon steel hearth roll sleeve after mixing and rolling, preserving the heat for 4 to 8 hours at the temperature of between 180 and 220 DEG C, placing the blank in a pressure vessel, maintaining the state for 15 to 30 minutes at the vacuum degree of between 10,000 and 20,000Pa, injecting liquid-state phenolic resin into the pressure vessel, pumping air until the vacuum degree is between 10,000 and 20,000Pa, and maintaining the state for 15 to 30 minutes; and finally, preserving the heat for 8 to 12 hours at the high temperature of between 1,950 and 2,150 DEG C, and machining the blank until the surface roughness is less than or equal to 12.5. The method has the advantages of simple process and low energy consumption; and the prepared product has the characteristics of high oxidation resistance, high strength, high abrasion resistance, low porosity, no nodule and capability of improving the quality of the silicon steel plate.
Description
Technical field
The invention belongs to the technical field for preparing high temperature resistant metallurgical material with carbon raw material.Relate in particular to a kind of silicon steel furnace bottom roller sleeve and preparation method.
Background technology
Since the eighties in 20th century, Iron And Steel Industry is developed continuous annealing system and is produced the high-quality steel plate, and employed carbonaceous material furnace bottom roller sleeve has keying action in the continuous annealing furnace of production silicon steel sheet.Because silicon plate has special performances, furnace bottom roller sleeve is had a very particular performances requirement with regard to corresponding, therefore, the production process of furnace bottom roller sleeve is very complicated, and not only the cycle is long but also energy consumption is high.As patent JP57137419A, JP57140377A, 1092324A, CN1117479, CN1994967, the described silicon steel furnace bottom roller sleeve of CN2199206 and preparation and surface treatment method all will pass through technological processs such as batching, compression moulding, roasting, vacuum infiltration, ultrahigh-temperature are burnt till, mechanical workout and be prepared into silicon steel furnace bottom roller sleeve, and its production process complexity, the cycle is long, energy consumption is high.
Summary of the invention
Task of the present invention provides the preparation method of the silicon steel furnace bottom roller sleeve that a kind of technology is simple, production energy consumption is low, it is good to have an antioxidant property with the silicon steel furnace bottom roller sleeve of this method preparation, and the intensity height, wear resistance is good, void content is low, non-nodulating, help improving characteristics such as silicon steel sheet quality.
For realizing above-mentioned task, the technical solution adopted in the present invention is: the dense carbon raw material macrobead of 2～10wt%, the dense carbon raw material small-particle of 2～10wt%, the dense carbon raw material fine powder of 80～95wt% and the Si micro mist of 0.3～2.0wt% are mixed, add the resol of above-mentioned admixtion 5～15wt%, mixed grind 20～30 minutes.
Compound after the mixed grind is pressed into the silicon steel furnace bottom roller sleeve pipe, under 180～220 ℃ of conditions, be incubated 4～8 hours, place again in the pressurized vessel of sealing, in vacuum tightness is to keep under 10000～20000Pa condition 15～30 minutes, Open valve injection liquid phenolic resin to this pipe is all soaked then, being pumped to vacuum tightness is 10000～20000Pa, keeps 15～30 minutes; At last be incubated 8～12 hours under 1950～2150 ℃ hot conditions, adopt the processing of lathe and grinding machine, the silicon steel furnace bottom roller sleeve pipe that high temperature is burnt till is machined to surfaceness≤12.5 (GB GB1031-1983), promptly is prepared into silicon steel furnace bottom roller sleeve.
In technical scheme of the present invention: the close carbon raw material of matter is fine and close unsetting carbon, ash content wherein≤1%; Dense carbon raw material macrobead is 0.5～2.0mm, and dense carbon raw material small-particle is 0～0.5mm, dense carbon raw material fine powder≤200 orders; Si micro mist≤300 orders; Compacting is that employing waits static pressure method to be pressed into the silicon steel furnace bottom roller sleeve pipe, and pressure is 200～300MPa.
Owing to adopt technique scheme, " a kind of durable silicon steel furnace bottom roller sleeve and preparation method thereof " patent of invention that the present invention applies on the same day with respect to the applicant, cancelled calcining process, the calcining process that is incubated 4～8 hours under 1400～1450 ℃ of conditions is made into to be incubated 4～8 hours thermal treatment under 180～220 ℃ of conditions, can reduce the telescopic production energy consumption effectively
In addition, because the present invention adopts fine and close decolorizing carbon cellulosic material and Si micro mist, batching is based on fine powder, prepared sleeve pipe has that volume density is big, void content is low and advantage such as the aperture is little, and Si micro mist and C can react and generate the SiC microcrystal increasing telescopic intensity and wear resistance under hot conditions, and improve the telescopic antioxidant property, the easy greying of decolorizing carbon and change into graphite-structure, the self-lubricating property that helps sleeve surface, the surface smoothness of guarantee silicon steel sheet.
Therefore, production technique of the present invention is simple, can effectively reduce the production energy consumption of silicon steel furnace bottom roller sleeve; Prepared silicon steel furnace bottom roller sleeve has that antioxidant property is good, intensity is high, wear resistance good, void content is low, non-nodulating and help improving characteristics such as silicon steel sheet quality.
Embodiment
Below in conjunction with embodiment, the present invention will be further described, is not the restriction to protection domain.
For avoiding repetition, the physics and chemistry technical parameter unification of the raw material that this embodiment will be related to earlier is described below, and embodiment repeats no more: the dense carbon raw material is fine and close unsetting carbon, ash content wherein≤1%; Dense carbon raw material macrobead is 0.5～2.0mm, and dense carbon raw material small-particle is 0～0.5mm, dense carbon raw material fine powder≤200 orders; Si micro mist≤300 orders; Compacting is to be pressed into the silicon steel furnace bottom roller sleeve pipe with static pressure methods such as hydropress, and pressure is 200～300MPa.
Embodiment 1
A kind of silicon steel furnace bottom roller sleeve and preparation method.The dense carbon raw material macrobead of 2～6wt%, the dense carbon raw material small-particle of 2～6wt%, the dense carbon raw material fine powder of 90～95wt% and the Si micro mist of 0.3～0.8wt% are mixed, add the resol of above-mentioned admixtion 5～8wt%, mixed grind 20～30 minutes.
Compound after the mixed grind is pressed into the silicon steel furnace bottom roller sleeve pipe, under 180～200 ℃ of conditions, be incubated 6～8 hours, place again in the pressurized vessel of sealing, in vacuum tightness is to keep under 10000～15000Pa condition 20～30 minutes, Open valve injection liquid phenolic resin to this pipe is all soaked then, being pumped to vacuum tightness is 10000～15000Pa, keeps 20～30 minutes; At last under 2100～2150 ℃ hot conditions, be incubated 8～10 hours, adopt the processing of lathe and grinding machine, the silicon steel furnace bottom roller sleeve pipe that high temperature is burnt till is machined to surfaceness≤12.5 (GB GB1031-1983, down together), promptly is prepared into silicon steel furnace bottom roller sleeve.
Embodiment 2
A kind of silicon steel furnace bottom roller sleeve and preparation method.The dense carbon raw material macrobead of 6～10wt%, the dense carbon raw material small-particle of 2～6wt%, the dense carbon raw material fine powder of 85～90wt% and the Si micro mist of 0.8～1.2wt% are mixed, add the resol of above-mentioned admixtion 6～10wt%, mixed grind 20～30 minutes is pressed into the silicon steel furnace bottom roller sleeve pipe.
Compound after the mixed grind is pressed into the silicon steel furnace bottom roller sleeve pipe, under 180～200 ℃ of conditions, be incubated 6～8 hours, place again in the pressurized vessel of sealing, in vacuum tightness is to keep under 10000～15000Pa condition 20～30 minutes, Open valve injection liquid phenolic resin to this pipe is all soaked then, being pumped to vacuum tightness is 10000～15000Pa, keeps 20～30 minutes; At last be incubated 8～10 hours under 2050～2100 ℃ hot conditions, adopt the processing of lathe and grinding machine, the silicon steel furnace bottom roller sleeve pipe that high temperature is burnt till is machined to surfaceness≤12.5, promptly is prepared into silicon steel furnace bottom roller sleeve.
Embodiment 3
A kind of silicon steel furnace bottom roller sleeve and preparation method.The dense carbon raw material macrobead of 2～6wt%, the dense carbon raw material small-particle of 6～10wt%, the dense carbon raw material fine powder of 85～90wt% and the Si micro mist of 1.2～1.6wt% are mixed, add the resol of above-mentioned admixtion 8～12wt%, mixed grind 20～30 minutes is pressed into the silicon steel furnace bottom roller sleeve pipe.
Compound after the mixed grind is pressed into the silicon steel furnace bottom roller sleeve pipe, under 200～220 ℃ of conditions, be incubated 4～6 hours, place again in the pressurized vessel of sealing, in vacuum tightness is to keep under 15000～20000Pa condition 15～25 minutes, Open valve injection liquid phenolic resin to this pipe is all soaked then, being pumped to vacuum tightness is 15000～20000Pa, keeps 15～25 minutes; At last be incubated 10～12 hours under 2000～2050 ℃ hot conditions, adopt the processing of lathe and grinding machine, the silicon steel furnace bottom roller sleeve pipe that high temperature is burnt till is machined to surfaceness≤12.5, promptly is prepared into silicon steel furnace bottom roller sleeve.
Embodiment 4
A kind of silicon steel furnace bottom roller sleeve and preparation method.The dense carbon raw material macrobead of 6～10wt%, the dense carbon raw material small-particle of 6～10wt%, the dense carbon raw material fine powder of 80～85wt% and the Si micro mist of 1.6～2.0wt% are mixed, add the resol of above-mentioned admixtion 12～15wt%, mixed grind 20～30 minutes is pressed into the silicon steel furnace bottom roller sleeve pipe.
Compound after the mixed grind is pressed into the silicon steel furnace bottom roller sleeve pipe, under 200～220 ℃ of conditions, be incubated 4～6 hours, place again in the pressurized vessel of sealing, in vacuum tightness is to keep under 15000～20000Pa condition 15～25 minutes, Open valve injection liquid phenolic resin to this pipe is all soaked then, being pumped to vacuum tightness is 15000～20000Pa, keeps 15～25 minutes; At last be incubated 10～12 hours under 1950～2000 ℃ hot conditions, adopt the processing of lathe and grinding machine, the silicon steel furnace bottom roller sleeve pipe that high temperature is burnt till is machined to surfaceness≤12.5, promptly is prepared into silicon steel furnace bottom roller sleeve.
" a kind of durable silicon steel furnace bottom roller sleeve and preparation method thereof " patent of invention that this embodiment is applied on the same day with respect to the applicant, cancelled calcining process, the calcining process that is incubated 4～8 hours under 1400～1450 ℃ of conditions is made into to be incubated 4～8 hours thermal treatment under 180～220 ℃ of conditions, and technology is simple, can reduce the telescopic production energy consumption effectively
In addition, because this embodiment adopts fine and close decolorizing carbon cellulosic material and Si micro mist, batching is based on fine powder, prepared sleeve pipe has that volume density is big, void content is low and advantage such as the aperture is little, and Si micro mist and C can react and generate the SiC microcrystal to increase telescopic intensity and wear resistance under hot conditions, and raising telescopic antioxidant property, the easy greying of decolorizing carbon and change into graphite-structure, the self-lubricating property that helps sleeve surface, the surface smoothness of guarantee silicon steel sheet.
Therefore, the production technique of this embodiment is simple, can effectively reduce the production energy consumption of silicon steel furnace bottom roller sleeve; Prepared silicon steel furnace bottom roller sleeve has that antioxidant property is good, intensity is high, wear resistance good, void content is low, non-nodulating and help improving characteristics such as silicon steel sheet quality.
Claims (5)
1. the preparation method of a silicon steel furnace bottom roller sleeve, it is characterized in that the dense carbon raw material macrobead of 2～10wt%, the dense carbon raw material small-particle of 2～10wt%, the dense carbon raw material fine powder of 80～95wt% and the Si micro mist of 0.3～2.0wt% are mixed, add the resol of above-mentioned admixtion 5～15wt%, mixed grind 20～30 minutes;
Compound after the mixed grind is pressed into the silicon steel furnace bottom roller sleeve pipe, under 180～220 ℃ of conditions, be incubated 4～8 hours, place again in the pressurized vessel of sealing, in vacuum tightness is to keep under 10000～20000Pa condition 15～30 minutes, Open valve injection liquid phenolic resin to this pipe is all soaked then, being pumped to vacuum tightness is 10000～20000Pa, keeps 15～30 minutes; At last be incubated 8～12 hours under 1950～2150 ℃ hot conditions, adopt the processing of lathe and grinding machine, the silicon steel furnace bottom roller sleeve pipe that high temperature is burnt till is machined to surfaceness≤12.5, promptly is prepared into silicon steel furnace bottom roller sleeve.
2. the preparation method of silicon steel furnace bottom roller sleeve according to claim 1 is characterized in that described dense carbon raw material is fine and close unsetting carbon, ash content wherein≤1%; Dense carbon raw material macrobead is 0.5～2.0mm, and dense carbon raw material small-particle is 0～0.5mm, dense carbon raw material fine powder≤200 orders.
3. the preparation method of silicon steel furnace bottom roller sleeve according to claim 1 is characterized in that described Si micro mist≤300 orders.
4. the preparation method of silicon steel furnace bottom roller sleeve according to claim 1 is characterized in that described compacting is that employing waits static pressure method to be pressed into the silicon steel furnace bottom roller sleeve pipe, and pressure is 200～300MPa.
5. according to the prepared silicon steel furnace bottom roller sleeve of the preparation method of the described silicon steel furnace bottom roller sleeve of claim 1～4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910273454A CN101817687B (en) | 2009-12-29 | 2009-12-29 | Silicon steel hearth roll sleeve and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910273454A CN101817687B (en) | 2009-12-29 | 2009-12-29 | Silicon steel hearth roll sleeve and preparation method thereof |
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| Publication Number | Publication Date |
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| CN101817687A true CN101817687A (en) | 2010-09-01 |
| CN101817687B CN101817687B (en) | 2012-09-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103318627A (en) * | 2013-07-09 | 2013-09-25 | 烟台开发区蓝鲸金属修复有限公司 | Anti-scaffolding furnace bottom roller used for steel rolling and manufacturing method thereof |
| CN104150928A (en) * | 2014-08-08 | 2014-11-19 | 湖北朗驰新型材料有限公司 | High-temperature furnace bottom roller sleeve with surface flexibility and preparation method of high-temperature furnace bottom roller sleeve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425571C (en) * | 2004-06-10 | 2008-10-15 | 山东八三特种耐火材料厂 | Graphite sleeves of rollers at furnace bottom and their dipping process and special apparatus thereof |
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2009
- 2009-12-29 CN CN200910273454A patent/CN101817687B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103318627A (en) * | 2013-07-09 | 2013-09-25 | 烟台开发区蓝鲸金属修复有限公司 | Anti-scaffolding furnace bottom roller used for steel rolling and manufacturing method thereof |
| CN103318627B (en) * | 2013-07-09 | 2015-10-07 | 烟台开发区蓝鲸金属修复有限公司 | A kind of steel rolling anti-dross hearth roll and manufacture method thereof |
| CN104150928A (en) * | 2014-08-08 | 2014-11-19 | 湖北朗驰新型材料有限公司 | High-temperature furnace bottom roller sleeve with surface flexibility and preparation method of high-temperature furnace bottom roller sleeve |
| CN104150928B (en) * | 2014-08-08 | 2016-01-27 | 湖北朗驰新型材料有限公司 | A kind of high temperature furnace bottom roller sleeve with surface flexible and preparation method thereof |
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| Publication number | Publication date |
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| CN101817687B (en) | 2012-09-19 |
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Granted publication date: 20120919 Termination date: 20131229 |