CN102050624A - Method for manufacturing Si3N4-enhanced furnace bottom roller sleeve - Google Patents
Method for manufacturing Si3N4-enhanced furnace bottom roller sleeve Download PDFInfo
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- CN102050624A CN102050624A CN 201110003394 CN201110003394A CN102050624A CN 102050624 A CN102050624 A CN 102050624A CN 201110003394 CN201110003394 CN 201110003394 CN 201110003394 A CN201110003394 A CN 201110003394A CN 102050624 A CN102050624 A CN 102050624A
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- furnace bottom
- bottom roller
- roller sleeve
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Abstract
The invention discloses a method for manufacturing a Si3N4-enhanced furnace bottom roller sleeve. The method comprises the following steps of: adding 1 to 10 weight percent of metal Si powder on the manufacturing base of a carbonaceous sleeve; and performing nitridation reaction sintering under the condition of N2 gas to generate Si3N4. The invention provides the method for manufacturing the Si3N4-enhanced furnace bottom roller sleeve which has high oxidation resistance performance, high strength and high abrasion resistant and contributes to improving the quality of a silicon steel plate.
Description
Technical field
The present invention relates to prepare the technical field of high temperature resistant metallurgical material with carbon raw material and Si3N4.Relate in particular to a kind of preparation method of Si3N4 enhancement type furnace bottom roller sleeve.
Background technology
Since the last century the eighties, continuous annealing system has become the main heat treatment system of producing the high quality steel plate, produced the demand to the high quality furnace bottom roll thus, and this demand is growing along with the development of Iron And Steel Industry.And the performance requriements of silicon plate is high, thereby the continuous annealing furnace of production silicon steel sheet has unique more requirement to furnace bottom roller sleeve.The employed sleeve pipe of silicon steel furnace bottom roller is the carbonaceous material sleeve pipe at present.
Patent JP57137419A, JP57140377A, 1092324A, CN1117479, CN1994967, CN2199206, CN200910273454.5 and CN200910273455.X, narrated silicon steel furnace bottom roller sleeve and preparation thereof and surface treatment method respectively, the one-tenth that prepared carbonaceous furnace bottom roller sleeve can be used in silicon steel sheet produces.From last century the eighties so far, one-tenth that this class carbonaceous furnace bottom roller sleeve is a silicon steel sheet produces and has brought into play enormous function, is in irreplaceable status always.But, show that through practical situations for many years there are some distinct issues in the carbonaceous furnace bottom roller sleeve: as in use producing surface cord, scratch the surface of silicon steel sheet, influence the electrical property of silicon steel sheet and cause waste product; Wear resistance is bad, use for some time after, being worn in the middle of the sleeve pipe attenuates and forms " dumbbell " shape, causes the edges of boards distortion and substandard products occur; Oxidation-resistance is bad, under the hot conditions of thermal treatment silicon steel gradually by the high temperature H in the stove
2The oxidation of O gas institute makes carbonaceous furnace bottom roller sleeve surface porosity, pitted skin occurs, reduces wear resistance and then reduction of service life, also can occur aggravating dross simultaneously and influence problem such as silicon steel sheet quality.For overcoming the problems referred to above, adopted the dense carbon raw material, the methods such as high-pressure molding and surface seepage processing improve the performance of sleeve pipe, and still, the problems such as the non-oxidizability that carbon raw material is intrinsic and mar proof difference still do not obtain basic solution.
Summary of the invention
For the preparation method's that overcomes existing furnace bottom roller sleeve the deficiency that antioxygenic property is relatively poor, intensity is relatively poor, wearability is relatively poor, the invention provides that a kind of antioxygenic property is good, intensity is high, wearability good and be conducive to improve the Si of silicon steel plate quality
3N
4The preparation method of enhancement mode furnace bottom roller sleeve.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of Si
3N
4The preparation method of enhancement mode furnace bottom roller sleeve adds the metal Si powder of 1～10wt%, at N on the preparation basis of carbonaceous sleeve pipe
2Carry out the nitridation reaction sintering under the gas condition and generate Si
3N
4
As preferred a kind of scheme: the granularity of described metal Si powder is 0.1--0mm, foreign matter content≤2%.
Further, described nitrogenizing reaction sintering is at industrial N
2Carry out high temperature sintering under the gas shiled condition.
Further, described nitrogenizing reaction sintering temperature is 1320～1500 ℃, and soaking time is 2～26 hours.
As preferred another scheme: with the Si for preparing
3N
4The enhancement mode furnace bottom roller sleeve is applied to enhancement mode silicon steel furnace bottom roller sleeve.
Technical conceive of the present invention is: the Si powder that the present invention adopts is when high temperature and N
2Reaction on the basis of carbonaceous material, generates the trickle Si of some
3N
4Particle is because Si
3N
4Big, wear-resistant, high temperature resistant, the good in oxidation resistance of intensity of pottery, can increase sleeve pipe intensity, strengthen wearability, improved the antioxygenic property of this sleeve pipe; And the host material of sleeve pipe is still carbonaceous material, still the self-lubricating property that has kept carbonaceous material is conducive to the self-lubricating property of sleeve surface, ensures the surface smoothness of silicon steel plate, surperficial non-nodulating in production and application avoids scratching because of surface cord the problem of silicon steel plate.Because this sleeve pipe had both kept the good self-lubricating property of carbonaceous material, had brought into play again Si
3N
4Wear-resistant and the antioxygenic property of pottery has the good characteristics of non-oxidizability and wearability, can effectively slow down the use wearing and tearing of sleeve pipe, the durability of reinforcing material increases the service life, and the more important thing is the ordinary production that has ensured silicon steel, stabilized product quality is increased economic efficiency.
Beneficial effect of the present invention mainly shows: have that antioxidant property is good, intensity is high, wear resistance good, non-nodulating, wearing quality are good, help improving the silicon steel sheet quality.
Embodiment
Below the invention will be further described.
For avoiding repetition, the identical process conditions unification of raw material physics and chemistry technical parameter that earlier this specific embodiment will be related to is described below, and embodiment repeats no more: the granularity of metal Si powder is 0.1～0mm, impurity content≤2%; N
2To adopt industrial N
2Gas; Just reduce the carbon dust of equal number when adding metal Si powder in the batching; Except nitrogenize reaction-sintered condition, other is identical with the carbonaceous sleeve pipe with production Technology such as carbon raw material and moulding.
Embodiment 1
A kind of Si
3N
4The preparation method of enhancement mode silicon steel furnace bottom roller sleeve: on the preparation basis of carbonaceous sleeve pipe, add the metal Si powder of 1～3wt%, at N
2Carry out the nitridation reaction sintering under the gas condition, nitridation sintered temperature is 1320～1390 ℃, and temperature retention time is that reaction in 18～26 hours generates Si
3N
4, other production Technology is identical with the carbonaceous sleeve pipe, is prepared into Si
3N
4The enhancement mode furnace bottom roller sleeve.
Embodiment 2
A kind of Si
3N
4The preparation method of enhancement mode silicon steel furnace bottom roller sleeve: on the preparation basis of carbonaceous sleeve pipe, add the metal Si powder of 3～6wt%, at N
2Carry out the nitridation reaction sintering under the gas condition, nitridation sintered temperature is 1350～1410 ℃, and temperature retention time is that reaction in 15～22 hours generates Si
3N
4, other production Technology is identical with the carbonaceous sleeve pipe, is prepared into Si
3N
4The enhancement mode furnace bottom roller sleeve.
Embodiment 3
A kind of Si
3N
4The preparation method of enhancement mode silicon steel furnace bottom roller sleeve: on the preparation basis of carbonaceous sleeve pipe, add the metal Si powder of 6～8wt%, at N
2Carry out the nitridation reaction sintering under the gas condition, nitridation sintered temperature is 1370～1430 ℃, and temperature retention time is that reaction in 12～18 hours generates Si
3N
4, other production Technology is identical with the carbonaceous sleeve pipe, is prepared into Si
3N
4The enhancement mode furnace bottom roller sleeve.
Embodiment 4
A kind of Si
3N
4The preparation method of enhancement mode silicon steel furnace bottom roller sleeve: on the preparation basis of carbonaceous sleeve pipe, add the metal Si powder of 8～10wt%, at N
2Carry out the nitridation reaction sintering under the gas condition, nitridation sintered temperature is 1410～1500 ℃, and temperature retention time is that reaction in 2～8 hours generates Si
3N
4, other production Technology is identical with the carbonaceous sleeve pipe, is prepared into Si
3N
4The enhancement mode furnace bottom roller sleeve.
Embodiment 5
A kind of Si
3N
4The preparation method of enhancement mode silicon steel furnace bottom roller sleeve: on the preparation basis of carbonaceous sleeve pipe, add the metal Si powder of 3～5wt%, at N
2Carry out the nitridation reaction sintering under the gas condition, nitridation sintered temperature is 1390～1480 ℃, and temperature retention time is that reaction in 6～12 hours generates Si
3N
4, other production Technology is identical with the carbonaceous sleeve pipe, is prepared into Si
3N
4The enhancement mode furnace bottom roller sleeve.
Embodiment 6
A kind of Si
3N
4The preparation method of enhancement mode silicon steel furnace bottom roller sleeve: on the preparation basis of carbonaceous sleeve pipe, add the metal Si powder of 4～7wt%, at N
2Carry out the nitridation reaction sintering under the gas condition, nitridation sintered temperature is 1380～1470 ℃, and temperature retention time is that reaction in 8～15 hours generates Si
3N
4, other production Technology is identical with the carbonaceous sleeve pipe, is prepared into Si
3N
4The enhancement mode furnace bottom roller sleeve.
The Si powder that this specific embodiment adopts is when high temperature and N
2Reaction generates some trickle Si in the carbonaceous sleeve pipe
3N
4Particle utilizes Si
3N
4The characteristics such as the intensity of pottery is big, wear-resistant, high temperature resistant, good in oxidation resistance increase intensity, the enhancing wearability of sleeve pipe, improve the antioxygenic property of sleeve pipe; And the stock of sleeve pipe or carbonaceous material, still the self-lubricating property that has kept carbonaceous material is conducive to the self-lubricating property of sleeve surface, ensures the surface smoothness of silicon steel plate, surperficial non-nodulating in production and application avoids scratching because of surface cord the problem of silicon steel plate.Because this sleeve pipe had both kept the good self-lubricating property of carbonaceous material, had brought into play again Si
3N
4Wear-resistant and the antioxygenic property of pottery has the good characteristics of non-oxidizability and wearability, can effectively slow down the use wearing and tearing of sleeve pipe, the durability of reinforcing material increases the service life, and the more important thing is the ordinary production that has ensured silicon steel, stabilized product quality is increased economic efficiency.
Embodiment 7
The Si that embodiment 1～6 is prepared
3N
4The enhancement mode furnace bottom roller sleeve is applied to enhancement mode silicon steel furnace bottom roller sleeve.
Claims (5)
1. Si
3N
4The preparation method of enhancement mode furnace bottom roller sleeve is characterized in that: add the metal Si powder of 1～10wt% on the preparation basis of carbonaceous sleeve pipe, at N
2Carry out the nitridation reaction sintering under the gas condition and generate Si
3N
4
2. Si according to claim 1
3N
4The preparation method of enhancement mode furnace bottom roller sleeve is characterized in that: the granularity of described metal Si powder is 0.1～0mm, impurity content≤2%.
3. Si according to claim 1 and 2
3N
4The preparation method of enhancement mode furnace bottom roller sleeve is characterized in that: described nitridation reaction sintering is at industrial N
2Carry out high temperature sintering under the gas protective condition.
4. Si according to claim 1 and 2
3N
4The preparation method of enhancement mode furnace bottom roller sleeve is characterized in that: described nitridation reaction sintering temperature is 1320～1500 ℃, and temperature retention time is 2～26 hours.
5. Si according to claim 1 and 2
3N
4The preparation method of enhancement mode furnace bottom roller sleeve is characterized in that: with the Si for preparing
3N
4The enhancement mode furnace bottom roller sleeve is applied to enhancement mode silicon steel furnace bottom roller sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110003394 CN102050624A (en) | 2011-01-10 | 2011-01-10 | Method for manufacturing Si3N4-enhanced furnace bottom roller sleeve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110003394 CN102050624A (en) | 2011-01-10 | 2011-01-10 | Method for manufacturing Si3N4-enhanced furnace bottom roller sleeve |
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|---|---|
| CN102050624A true CN102050624A (en) | 2011-05-11 |
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| CN 201110003394 Pending CN102050624A (en) | 2011-01-10 | 2011-01-10 | Method for manufacturing Si3N4-enhanced furnace bottom roller sleeve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032160A (en) * | 2014-06-11 | 2014-09-10 | 张家港市华尊宝特种材料科技有限公司 | Method for manufacturing antioxidant metal part |
| CN113024254A (en) * | 2021-03-01 | 2021-06-25 | 广州慧能新材料科技有限公司 | High-wear-resistance powder metallurgy material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0187025A2 (en) * | 1984-12-24 | 1986-07-09 | Borg-Warner Corporation | Direct liquid phase bonding of ceramics |
| CN101768002A (en) * | 2009-12-29 | 2010-07-07 | 武汉科技大学 | Durable silicon steel furnace bottom roller sleeve and preparation method thereof |
| CN101885615A (en) * | 2010-06-08 | 2010-11-17 | 武汉科技大学 | C-Si-N silicon steel hearth roller sleeve and manufacture method thereof |
-
2011
- 2011-01-10 CN CN 201110003394 patent/CN102050624A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0187025A2 (en) * | 1984-12-24 | 1986-07-09 | Borg-Warner Corporation | Direct liquid phase bonding of ceramics |
| CN101768002A (en) * | 2009-12-29 | 2010-07-07 | 武汉科技大学 | Durable silicon steel furnace bottom roller sleeve and preparation method thereof |
| CN101885615A (en) * | 2010-06-08 | 2010-11-17 | 武汉科技大学 | C-Si-N silicon steel hearth roller sleeve and manufacture method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032160A (en) * | 2014-06-11 | 2014-09-10 | 张家港市华尊宝特种材料科技有限公司 | Method for manufacturing antioxidant metal part |
| CN113024254A (en) * | 2021-03-01 | 2021-06-25 | 广州慧能新材料科技有限公司 | High-wear-resistance powder metallurgy material and preparation method thereof |
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Application publication date: 20110511 |