CN103486791A - Cooling method for boracic rollers - Google Patents
Cooling method for boracic rollers Download PDFInfo
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- CN103486791A CN103486791A CN201310428063.2A CN201310428063A CN103486791A CN 103486791 A CN103486791 A CN 103486791A CN 201310428063 A CN201310428063 A CN 201310428063A CN 103486791 A CN103486791 A CN 103486791A
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- roll
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- cooled
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Abstract
The invention relates to a cooling method for boracic rollers. The cooling method is characterized by including the steps of 1), pre-cooling former online rollers by cooling water; 2), replacing the pre-cooled rollers from a rack and suspending the rollers on a roller holding platform; 3), naturally cooling the rollers in a period of roller replacement; 4), forcedly cooling the offline rollers on the roller holding platform by the cooling water to a normal temperature. The cooling method is simple to operate, high in cooling speed and good in evenness and can effectively meet needs of follow-up grinding control of the rollers, and accordingly, turnover efficiency of the rollers is improved. According to the cooling method, the rollers are pre-cooled by the cooling water before replacing and then replaced and naturally cooled during replacing, and the offline rollers are forcedly cooled by the cooling water, so that the rollers can be cooled rapidly and effectively to the normal temperature, and a reliable basis is provided for follow-up grinding control of the rollers.
Description
Technical field
The present invention relates to a kind of cooling means of boron-containing roller.
Background technology
General roll is in the operation of rolling, and the temperature of moment may reach 700 800 ℃, and after the water-cooled through certain hour, its temperature roughly is controlled at 80 ℃ of left and right, and in particular cases, the temperature of roll may reach 100 ℃ of left and right.Due in the operation of rolling, there is certain skew with steel, cause the Temperature Distribution of roll to present irregular Temperature Distribution, now, the roll shape of roll, due to temperature influence, can show as irregular roll shape; Be subject to the impact of wearing and tearing in the operation of rolling simultaneously, aggravated the generation of irregular roll shape, thus before roll carries out grinding, roll must be cooled to normal temperature, to avoid the impact of roller temperature.Yet be subject to the impact of inventory cost, must transfer with minimum roll week and meet the requirement of producing, this has proposed new requirement to cooling effect and speed.
Summary of the invention
For problems of the prior art, the object of the present invention is to provide a kind of technical scheme of cooling means of boron-containing roller.
The cooling means of described a kind of boron-containing roller is characterized in that the component that this boron-containing roller contains following percentage by weight: C 3.2-3.5%, Si 0.2-0.4%, B 1.2-1.6%, Cr 6.3-7.0%, Mn 1.6-1.8%, V 1.5-1.8%, Mo 2.2-2.8%, W 1.2-1.6%, Nb 0.1-0.3%, Ce 0.25-0.35%, Ti 0.3-0.5%, S<0.03%, P<0.04%, all the other are Fe; The concrete steps of this cooling means are:
1) by cooling water, to the online roll before changing, carry out pre-cooled;
2) roll after pre-cooled is changed to lower bearing bracket, and be hung and put on the roller platform;
3) changing in the time period of roll, making roll carry out nature cooling;
4) by cooling water, the roll that rolls off the production line of putting on the roller platform is forced to be cooled to normal temperature.
The cooling means of described a kind of boron-containing roller is characterized in that the concrete steps of described step 1) are:
1) after in the end a band steel finished frame is thrown steel, open the water discharging board on rolling line, the angle that described water discharging board is opened for and roll axis be 30 degree, and and roll surface between air line distance be 5 10 centimetres;
2) the cooling water collector nozzle breaker roll by the water discharging board top is sprayed cooling water;
3) roll is undertaken pre-cooled by cooling water and the cooling water after the water discharging board water conservancy diversion of direct injection respectively;
4), when roll is shut down and at the uniform velocity sling, the cooling water collector stops spraying.
The cooling means of described a kind of boron-containing roller, is characterized in that the time of replacing roll in described step 3) is 10 20 minutes.
The cooling means of described a kind of boron-containing roller is characterized in that the concrete steps of described step 4) are:
1) above putting the roller platform, the spraying head type shower nozzle that number row is connected with cooling water source is set;
2) side water fender and cooling water collection channel are set respectively in the both sides of putting the roller platform;
3) force to be cooled to normal temperature by the even spraying cooling water of spraying head type shower nozzle breaker roll;
4) splash and reclaim cooling water by the cooling water collection channel by side block water plate resistance gear cooling water.
Cooling means of the present invention is simple to operate, cooling velocity fast, good uniformity, can effectively meet the demand that the follow-up grinding of roll is controlled, thereby improves all transfer efficients of roll.
Cooling means of the present invention for first being undertaken pre-cooled by the cooling water breaker roll before roll change, then carry out roll change, and it is cooling to make roll carry out nature when roll change, finally cooling by the pressure that lower machine roll is carried out to cooling water, thereby make the roll can be fast and effectively be cooled to normal temperature, for follow-up roll dressing, control reliable basis is provided.
The specific embodiment
The cooling means of boron-containing roller of the present invention, the component that boron-containing roller contains following percentage by weight: C 3.2-3.5%, Si 0.2-0.4%, B 1.2-1.6%, Cr 6.3-7.0%, Mn 1.6-1.8%, V 1.5-1.8%, Mo 2.2-2.8%, W 1.2-1.6%, Nb 0.1-0.3%, Ce 0.25-0.35%, Ti 0.3-0.5%, S<0.03%, P<0.04%, all the other are Fe;
The concrete steps of this cooling means are:
1) by cooling water, to the online roll before changing, carry out pre-cooled;
2) roll after pre-cooled is changed to lower bearing bracket, and be hung and put on the roller platform;
3) changing in the time period of roll, making roll carry out nature cooling, the time of changing roll is 10 20 minutes;
4) by cooling water, the roll that rolls off the production line of putting on the roller platform is forced to be cooled to normal temperature.
The concrete steps of above-mentioned step 1) are:
1) after in the end a band steel finished frame is thrown steel, open the water discharging board on rolling line, the angle that described water discharging board is opened for and roll axis be 30 degree, and and roll surface between air line distance be 5 10 centimetres;
2) the cooling water collector nozzle breaker roll by the water discharging board top is sprayed cooling water;
3) roll is undertaken pre-cooled by cooling water and the cooling water after the water discharging board water conservancy diversion of direct injection respectively;
4), when roll is shut down and at the uniform velocity sling, the cooling water collector stops spraying.
Above-mentioned steps 4) concrete steps are:
1) above putting the roller platform, the spraying head type shower nozzle that number row is connected with cooling water source is set;
2) side water fender and cooling water collection channel are set respectively in the both sides of putting the roller platform;
3) force to be cooled to normal temperature by the even spraying cooling water of spraying head type shower nozzle breaker roll;
4) splash and reclaim cooling water by the cooling water collection channel by side block water plate resistance gear cooling water.
Cooling means of the present invention is simple to operate, cooling velocity fast, good uniformity, can effectively meet the demand that the follow-up grinding of roll is controlled, thereby improves all transfer efficients of roll.
Cooling means of the present invention for first being undertaken pre-cooled by the cooling water breaker roll before roll change, then carry out roll change, and it is cooling to make roll carry out nature when roll change, finally cooling by the pressure that lower machine roll is carried out to cooling water, thereby make the roll can be fast and effectively be cooled to normal temperature, for follow-up roll dressing, control reliable basis is provided.
Claims (4)
1. the cooling means of a boron-containing roller, is characterized in that the component that this boron-containing roller contains following percentage by weight: C 3.2-3.5%, Si 0.2-0.4%, B 1.2-1.6%, Cr 6.3-7.0%, Mn 1.6-1.8%, V 1.5-1.8%, Mo 2.2-2.8%, W 1.2-1.6%, Nb 0.1-0.3%, Ce 0.25-0.35%, Ti 0.3-0.5%, S<0.03%, P<0.04%, all the other are Fe; The concrete steps of this cooling means are:
1) by cooling water, to the online roll before changing, carry out pre-cooled;
2) roll after pre-cooled is changed to lower bearing bracket, and be hung and put on the roller platform;
3) changing in the time period of roll, making roll carry out nature cooling;
4) by cooling water, the roll that rolls off the production line of putting on the roller platform is forced to be cooled to normal temperature.
2. the cooling means of a kind of boron-containing roller according to claim 1 is characterized in that the concrete steps of described step 1) are:
1) after in the end a band steel finished frame is thrown steel, open the water discharging board on rolling line, the angle that described water discharging board is opened for and roll axis be 30 degree, and and roll surface between air line distance be 5 10 centimetres;
2) the cooling water collector nozzle breaker roll by the water discharging board top is sprayed cooling water;
3) roll is undertaken pre-cooled by cooling water and the cooling water after the water discharging board water conservancy diversion of direct injection respectively;
4), when roll is shut down and at the uniform velocity sling, the cooling water collector stops spraying.
3. the cooling means of a kind of boron-containing roller according to claim 1, is characterized in that the time of replacing roll in described step 3) is 10 20 minutes.
4. the cooling means of a kind of boron-containing roller according to claim 1 is characterized in that the concrete steps of described step 4) are:
1) above putting the roller platform, the spraying head type shower nozzle that number row is connected with cooling water source is set;
2) side water fender and cooling water collection channel are set respectively in the both sides of putting the roller platform;
3) force to be cooled to normal temperature by the even spraying cooling water of spraying head type shower nozzle breaker roll;
4) splash and reclaim cooling water by the cooling water collection channel by side block water plate resistance gear cooling water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310428063.2A CN103486791A (en) | 2013-09-22 | 2013-09-22 | Cooling method for boracic rollers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310428063.2A CN103486791A (en) | 2013-09-22 | 2013-09-22 | Cooling method for boracic rollers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103486791A true CN103486791A (en) | 2014-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310428063.2A Pending CN103486791A (en) | 2013-09-22 | 2013-09-22 | Cooling method for boracic rollers |
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| Country | Link |
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| CN (1) | CN103486791A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105195520A (en) * | 2015-09-02 | 2015-12-30 | 铜陵翔宇商贸有限公司 | Cooling method for replacement of hot roll |
-
2013
- 2013-09-22 CN CN201310428063.2A patent/CN103486791A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105195520A (en) * | 2015-09-02 | 2015-12-30 | 铜陵翔宇商贸有限公司 | Cooling method for replacement of hot roll |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140101 |
|
| WD01 | Invention patent application deemed withdrawn after publication |