CN115283445A - Rolling mill cooling liquid spraying method - Google Patents
Rolling mill cooling liquid spraying method Download PDFInfo
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- CN115283445A CN115283445A CN202211114419.0A CN202211114419A CN115283445A CN 115283445 A CN115283445 A CN 115283445A CN 202211114419 A CN202211114419 A CN 202211114419A CN 115283445 A CN115283445 A CN 115283445A
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- Prior art keywords
- cooling liquid
- rolling mill
- roll
- roller
- cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B28/00—Maintaining rolls or rolling equipment in effective condition
Abstract
The invention discloses a cooling liquid spraying method for a rolling mill, which aims at the position of the rolling mill needing cooling at a spray head of the cooling liquid, and a drainage plate is arranged at the roll gap of the rolling mill, the size of the drainage plate is adjusted according to the size of a working roll of the rolling mill, a flow channel for supplying the cooling liquid is arranged in the drainage plate, and a roll bearing seat and a roll adjusting device are arranged by two pieces of square windows, so that the roll bearing seat and a roll are positioned at the central axis of the drainage plate, the part needing cooling of the rolling mill is conveniently cooled, a sealant is selected to be coated at the gap between the parts needing cooling and not needing cooling of the rolling mill, the gap between the joint surfaces is filled with the sealant to form a uniform and stable continuous film with viscosity, viscoelasticity or strippability, the sealing treatment can be carried out on the part of the rolling mill, and the cooling liquid can be sprayed to the surface of the part needing cooling, and the cooling liquid can be isolated.
Description
Technical Field
The invention relates to the technical field of cooling of rolling mills, in particular to a method for spraying cooling liquid of a rolling mill.
Background
The rolling mill is equipment for realizing a metal rolling process, is equipment for completing the whole process of rolled material production, and can be divided into two rolls, four rolls, six rolls, eight rolls, twelve rolls, eighteen rolls and the like according to the number of the rolls; according to the arrangement mode of the rollers, the rollers can be divided into an L shape, a T shape, an F shape, a Z shape and an S shape. The common rolling mill mainly comprises a roller, a frame, a roller spacing adjusting device, a roller temperature adjusting device, a transmission device, a lubricating system, a control system, a roller dismounting device and the like. Besides the main parts and devices of the common rolling mill, the precision rolling mill is additionally provided with a device for ensuring the rolling precision, supporting the roller and keeping the fixed position of the roller in the stand. Since the change of the roll bearing load is large, a low bearing friction coefficient is required, and a molding device having sufficient strength and rigidity and facilitating replacement of rolls such as cylindrical roller bearings and the like is required. Different types of rolling bearings are selected for different rolling mills. The cylindrical roller bearing has the advantages of high rigidity, small friction coefficient, high bearing pressure, convenience in roller disassembly and high price. High rigidity of the rolling bearing, relatively low friction coefficient but relatively low pressure bearing capacity, and relatively large appearance size, are suitable for the strip rolling mill working roll. The sliding bearing has two types of semi-dry friction and liquid friction. The semi-dry friction roll bearing is mainly bakelite, copper shoe and nylon shoe bearing, so that the molding machine is cheaper and is more suitable for a profile rolling mill and a cogging mill.
When the rolling mill is in continuous operation, the phenomenon that inside spare part can appear generating heat usually, when spare part is overheated, leads to spare part to appear the phenomenon of damaging very easily to be unfavorable for protecting the rolling mill, have the defect.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a method for spraying cooling liquid of a rolling mill, which has the advantages of avoiding the phenomenon that the rolling mill is damaged due to self overheating of the rolling mill, protecting the rolling mill and the like, and solves the problem that internal parts usually generate heat.
(II) technical scheme
In order to achieve the purpose of avoiding the phenomenon that the rolling mill is damaged due to self overheating and protecting the rolling mill, the invention provides the following technical scheme: a cooling liquid spraying method for a rolling mill comprises the following steps:
s1, adjusting a rolling mill
The position of the rolling mill required to be cooled is aligned to the spray nozzle of the cooling liquid, the drainage plate is installed at the roll gap of the rolling mill, the size of the drainage plate is adjusted according to the size of a working roll of the rolling mill, a flow channel for the cooling liquid is formed in the drainage plate, and meanwhile, the drainage plate is composed of two pieces of square memorial archways to install a roll bearing seat and a roll adjusting device, so that the roll bearing seat and a roll of the drainage plate are located at the central axis of the drainage plate, and parts of the rolling mill required to be cooled are cooled conveniently.
S2, sealing parts
The sealant is selected and smeared at the gaps of parts which need to be cooled and do not need to be cooled of the rolling mill, so that the sealant is filled in gaps among joint surfaces to form (or is formed after drying) a uniform and stable continuous film with viscosity, viscoelasticity or strippability, thereby sealing the joint surfaces of all parts of equipment and cooling the parts which need to be cooled by the coolant.
S3, injection treatment
The cooling liquid spraying head is inserted into the drainage groove formed in the drainage plate, the cooling liquid is sprayed from the spraying head under the action of an external force apparatus, the spraying speed of the cooling liquid is generally 0.8m/s, the cooling liquid spraying head is over against the roller bearing seat and the roller position, the roller bearing seat and the roller position are subjected to open processing, the cooling liquid of the cooling liquid rapidly flows into the roller bearing seat and the roller and the surface of the roller bearing seat and the roller, the rapid cooling of the roller bearing seat and the roller is convenient to realize, and the working performance of the roller bearing seat and the roller is improved.
S4, cooling reaction
After the cooling liquid is sprayed to the interior and the surface of the roll chock and the roll, the cooling liquid can take away heat generated by continuous work of the roll chock and the roll, and the states of the roll chock and the roll can be greatly changed by absorbing and releasing the roll chock and the roll through the cooling liquid, so that the processes of heat absorption and heat release are accompanied.
Preferably, in the step S1, the diameter of the drainage channel formed in the drainage plate determines the flow velocity of the cooling liquid, and the flow velocity of the cooling liquid is usually 1.5cm/S.
Preferably, in step S2, the gap between the metal joining surfaces using the liquid sealant is generally 0.1mm or less.
Preferably, in the step S2, after the sealant is applied, the time for drying the sealant is usually 2 to 3min.
Preferably, in step S3, the shape of the hole groove formed in the drainage plate includes a fan-shaped groove and a rectangular groove, and the shape of the hole groove determines the flow rate of the cooling liquid, so as to change the time for reaching the position of the component to be cooled.
Preferably, in step S3, the uniformity of the cooling liquid injection affects the cooling speed of the component, and when the cooling liquid injection is uniform, the speed of the component is generally 6.5-8min.
Preferably, in step S4, the refrigeration temperature of the cooling liquid is above 0 ℃, and the cooling liquid mainly comprises water, ethylene glycol and additives, and the additives mainly comprise corrosion inhibitors.
Preferably, in the step S4, the rolling mill has high mechanical load, high thermal load and high frictional heat due to the operating characteristics of high rotation speed, high compression ratio and high power, so that the requirement for the normal operating temperature of the cooling liquid is increased to 95-105 ℃.
(III) advantageous effects
Compared with the prior art, the invention provides a method for spraying cooling liquid of a rolling mill, which has the following beneficial effects:
1. the cooling liquid spraying method of the rolling mill is characterized in that the position, required to be cooled, of the rolling mill is aligned to a spray head of cooling liquid, a drainage plate is installed at a roll gap of the rolling mill, the size of the drainage plate is adjusted according to the size of a working roll of the rolling mill, a flow channel for supplying the cooling liquid is formed in the drainage plate, a roll bearing seat and a roll adjusting device are installed by two pieces of square archways, the roll bearing seat and the roll are located at the central axis of the drainage plate, so that parts, required to be cooled, of the rolling mill can be conveniently cooled, sealant is selected and coated at the gap between the parts, required to be cooled and not required to be cooled, of the rolling mill, so that the gap between joint surfaces is filled with the sealant to form (or is formed after drying) a uniform and stable continuous film with viscosity, viscoelasticity or strippability, the parts of the rolling mill can be subjected to sealing treatment, the cooling liquid can be sprayed to the surface of the parts, and the cooling liquid can be isolated.
2. The cooling liquid spraying head is inserted into a drainage groove formed in a drainage plate, cooling liquid is sprayed from the spraying head under the action of an external force instrument, the cooling liquid spraying head is opposite to a roller bearing seat and a roller position, the roller bearing seat and the roller position are subjected to open processing, the cooling liquid can rapidly flow into the roller bearing seat and the roller and on the surface of the roller bearing seat and the roller, so that the roller bearing seat and the roller can be rapidly cooled, the working performance of the roller bearing seat and the roller can be improved, after the cooling liquid is sprayed into the roller bearing seat and the roller and on the surface of the roller, the cooling liquid can take away heat generated by continuous work of the roller bearing seat and the roller, the roller bearing seat and the roller can be greatly changed in states of the roller bearing seat and the roller through absorption and release of the cooling liquid, the phenomenon that the rolling mill is damaged due to self overheating can be avoided, and the rolling mill can be protected.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A cooling liquid spraying method for a rolling mill comprises the following steps:
s1, adjusting a rolling mill
The position of the rolling mill, which needs to be cooled, is aligned to the spray nozzle of the cooling liquid, the drainage plate is arranged at the roll gap of the rolling mill, the size of the drainage plate is adjusted according to the size of a working roll of the rolling mill, a flow channel for the cooling liquid is arranged in the drainage plate, and meanwhile, the drainage plate is composed of two pieces of square memorial archways to install a roll bearing seat and a roll adjusting device, so that the roll bearing seat and a roll are positioned at the central axis of the drainage plate, and parts of the rolling mill, which need to be cooled, can be cooled conveniently.
S2, sealing parts
The sealant is selected and smeared at the gaps of parts which need to be cooled and do not need to be cooled of the rolling mill, so that the sealant is filled in gaps among joint surfaces to form (or is formed after drying) a uniform and stable continuous film with viscosity, viscoelasticity or strippability, thereby sealing the joint surfaces of all parts of equipment and cooling the parts which need to be cooled by the coolant.
S3, spraying treatment
The cooling liquid spraying head is inserted into the drainage groove formed in the drainage plate, the cooling liquid is sprayed from the spraying head under the action of an external force apparatus, the spraying speed of the cooling liquid is generally 0.8m/s, the cooling liquid spraying head is over against the roller bearing seat and the roller position, the roller bearing seat and the roller position are subjected to open processing, the cooling liquid of the cooling liquid rapidly flows into the roller bearing seat and the roller and the surface of the roller bearing seat and the roller, the rapid cooling of the roller bearing seat and the roller is convenient to realize, and the working performance of the roller bearing seat and the roller is improved.
S4, cooling reaction
After the cooling liquid is sprayed to the interior and the surface of the roll chock and the roll, the cooling liquid can take away heat generated by continuous work of the roll chock and the roll, and the states of the roll chock and the roll can be greatly changed by absorbing and releasing the roll chock and the roll through the cooling liquid, so that the processes of heat absorption and heat release are accompanied.
In the step S1, the diameter of a drainage channel formed in the drainage plate determines the flow rate of cooling liquid, the flow rate of the cooling liquid is usually 1.5cm/S, in the step S2, the metal joint surface of liquid sealant is used, the clearance is usually below 0.1mm, in the step S2, after the sealant is coated, the drying time of the sealant is usually 2-3min, in the step S3, a slot-shaped hole groove and a rectangular groove are formed in the drainage plate, the shapes of the slot-shaped hole groove and the rectangular groove determine the flow rate of the cooling liquid, so that the time of reaching the position of a part needing to be cooled is changed, in the step S3, the uniformity of cooling liquid spraying influences the cooling speed of the part, in the case of uniform cooling liquid spraying, the speed of the part is usually 6.5-8min, in the step S4, the refrigerating temperature of the cooling liquid is above 0 ℃, and the cooling liquid mainly comprises water, glycol and additives, and the additives mainly comprise corrosion inhibitors, and in the step S4, the rolling mill has high mechanical rotation speed, high mechanical rotation speed and high mechanical load, and working temperature of the working load of the cooling liquid is increased to 95 ℃ and the normal working load is required.
The cooling liquid spraying method of the rolling mill is characterized in that the position of the rolling mill needing cooling is aligned to a spray head of the cooling liquid, a drainage plate is arranged at a roll gap of the rolling mill, the size of the drainage plate is adjusted according to the size of a working roll of the rolling mill, a flow channel for supplying the cooling liquid is arranged in the drainage plate, a roll bearing seat and a roll adjusting device are arranged by two pieces of square archways, the roll bearing seat and the roll are positioned at the central axis of the drainage plate so as to conveniently cool the parts needing cooling of the rolling mill, sealant is selected to be coated at the gap between the parts needing cooling and not needing cooling of the rolling mill to be filled in the gap between the joint surfaces to form (or form after drying) a uniform and stable continuous film with viscosity, viscoelasticity or strippability, the parts of the rolling mill can be sealed, and the cooling liquid can be sprayed to the surface of the parts needing cooling, the cooling liquid is isolated, the cooling liquid spraying head is inserted in the drainage groove arranged in the drainage plate, the cooling liquid is sprayed from the spraying head under the action of an external force apparatus, the cooling liquid spraying head is opposite to the roller bearing seat and the roller position, the roller bearing seat and the roller position are subjected to open processing, the cooling liquid rapidly flows into the roller bearing seat and the roller and the surface of the roller, so that the roller bearing seat and the roller are rapidly cooled, the working performance of the roller bearing seat and the roller is improved, after the cooling liquid is sprayed into the roller bearing seat and the roller and the surface of the roller, the cooling liquid can take away heat generated by continuous work of the roller bearing seat and the roller, and the states of the roller bearing seat and the roller can be greatly changed by absorbing and releasing the cooling liquid to the roller bearing seat and the roller, therefore, along with the heat absorption and heat release processes, the rolling mill can be rapidly cooled, the phenomenon that the rolling mill is damaged due to self overheating of the rolling mill can be avoided, and the rolling mill is protected.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The method for spraying the cooling liquid of the rolling mill is characterized by comprising the following steps of:
s1, adjusting a rolling mill
The position of the rolling mill, which needs to be cooled, is aligned to the spray nozzle of the cooling liquid, the drainage plate is arranged at the roll gap of the rolling mill, the size of the drainage plate is adjusted according to the size of a working roll of the rolling mill, a flow channel for the cooling liquid is arranged in the drainage plate, and meanwhile, the drainage plate is composed of two pieces of square memorial archways to install a roll bearing seat and a roll adjusting device, so that the roll bearing seat and a roll are positioned at the central axis of the drainage plate, and parts of the rolling mill, which need to be cooled, can be cooled conveniently.
S2, sealing parts
The sealant is selected and smeared at the gaps of parts which need to be cooled and do not need to be cooled of the rolling mill, so that the sealant is filled in gaps among joint surfaces to form (or is formed after drying) a uniform and stable continuous film with viscosity, viscoelasticity or strippability, thereby sealing the joint surfaces of all parts of equipment and cooling the parts which need to be cooled by the coolant.
S3, spraying treatment
The cooling liquid spraying head is inserted into the drainage groove formed in the drainage plate, the cooling liquid is sprayed from the spraying head under the action of an external force apparatus, the spraying speed of the cooling liquid is generally 0.8m/s, the cooling liquid spraying head is over against the roller bearing seat and the roller position, the roller bearing seat and the roller position are subjected to open processing, the cooling liquid of the cooling liquid rapidly flows into the roller bearing seat and the roller and the surface of the roller bearing seat and the roller, the rapid cooling of the roller bearing seat and the roller is convenient to realize, and the working performance of the roller bearing seat and the roller is improved.
S4, cooling reaction
After the cooling liquid is sprayed to the interior and the surface of the roll chock and the roll, the cooling liquid can take away heat generated by continuous work of the roll chock and the roll, and the states of the roll chock and the roll can be greatly changed by absorbing and releasing the roll chock and the roll through the cooling liquid, so that the processes of heat absorption and heat release are accompanied.
2. The method for spraying cooling liquid of rolling mill as claimed in claim 1, wherein in step S1, the diameter of the flow guide channel formed inside the flow guide plate determines the flow velocity of the cooling liquid, and the flow velocity of the cooling liquid is usually 1.5cm/S.
3. The method of claim 1, wherein the gap between the metal joint surfaces in step S2 using the liquid sealant is generally less than 0.1 mm.
4. The method of claim 1, wherein in step S2, after the sealant is applied, the sealant is dried for 2-3min.
5. The method of claim 1, wherein in step S3, the shape of the internal grooves of the flow-guiding plates is a combination of fan-shaped grooves and rectangular grooves, and the shape of the internal grooves determines the flow rate of the cooling liquid, thereby changing the time to reach the position of the part to be cooled.
6. The method of claim 1, wherein the uniformity of the cooling liquid injection in step S3 affects the cooling speed of the part, and the speed of the part is generally 6.5-8min when the cooling liquid injection is uniform.
7. The method of claim 1, wherein in step S4, the cooling temperature of the cooling liquid is above 0 ℃, and the cooling liquid mainly comprises water, glycol and additives, and the additives mainly comprise corrosion inhibitors.
8. The method for spraying cooling liquid on rolling mill as claimed in claim 1, wherein in step S4, the requirement for the normal operating temperature of the cooling liquid has been increased to 95 ℃ to 105 ℃ due to the high operating characteristics of the rolling mill, such as high rotation speed, high compression ratio and high power, such as large mechanical load and thermal load, and high frictional heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211114419.0A CN115283445A (en) | 2022-09-14 | 2022-09-14 | Rolling mill cooling liquid spraying method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211114419.0A CN115283445A (en) | 2022-09-14 | 2022-09-14 | Rolling mill cooling liquid spraying method |
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| Publication Number | Publication Date |
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| CN115283445A true CN115283445A (en) | 2022-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211114419.0A Pending CN115283445A (en) | 2022-09-14 | 2022-09-14 | Rolling mill cooling liquid spraying method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116603864A (en) * | 2023-06-05 | 2023-08-18 | 广东云湾科技有限公司 | Working roll cooling device and use method thereof |
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2022
- 2022-09-14 CN CN202211114419.0A patent/CN115283445A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116603864A (en) * | 2023-06-05 | 2023-08-18 | 广东云湾科技有限公司 | Working roll cooling device and use method thereof |
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