CN113198846A - Method for protecting roller patterns during rolling of extremely-thin gauge plate - Google Patents

Method for protecting roller patterns during rolling of extremely-thin gauge plate Download PDF

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Publication number
CN113198846A
CN113198846A CN202110533675.2A CN202110533675A CN113198846A CN 113198846 A CN113198846 A CN 113198846A CN 202110533675 A CN202110533675 A CN 202110533675A CN 113198846 A CN113198846 A CN 113198846A
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China
Prior art keywords
roll
pattern
rolling
gauge plate
thin gauge
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CN202110533675.2A
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Chinese (zh)
Inventor
杨程
刘勇
李卫平
王登刚
付开忠
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Pangang Group Xichang Steel and Vanadium Co Ltd
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Pangang Group Xichang Steel and Vanadium Co Ltd
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Priority to CN202110533675.2A priority Critical patent/CN113198846A/en
Publication of CN113198846A publication Critical patent/CN113198846A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B28/00Maintaining rolls or rolling equipment in effective condition
    • B21B28/02Maintaining rolls in effective condition, e.g. reconditioning
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B31/00Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16Adjusting or positioning rolls
    • B21B31/20Adjusting or positioning rolls by moving rolls perpendicularly to roll axis

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Abstract

本发明公开了一种极薄规格板轧制时保护轧辊花纹的方法,在花纹辊空载时,调大花纹辊的上下辊之间的辊缝,降低空载时对花纹辊上花纹的磨损,在待轧制的极薄规格板进入花纹辊之前,调小花纹辊的上下辊之间的辊缝,保证花纹辊的上下辊之间的距离满足对待轧制的极薄规格板轧制压力,保证对待轧制的极薄规格板的轧制效果。本方案公开的极薄规格板轧制时保护轧辊花纹的方法,花纹辊的使用周期由3‑4次提升到4‑5次,延长了花纹辊的使用寿命,同时实现了极薄规格花纹板的批量轧制。

Figure 202110533675

The invention discloses a method for protecting a roll pattern during rolling of an extremely thin plate. When the pattern roll is no-load, the roll gap between the upper and lower rolls of the pattern roll is increased to reduce the wear of the pattern on the pattern roll when the roll is no-load. , before the ultra-thin gauge plate to be rolled enters the patterned roller, adjust the gap between the upper and lower rollers of the patterned roller to ensure that the distance between the upper and lower rollers of the patterned roller meets the rolling pressure of the ultra-thin gauge plate to be rolled. , to ensure the rolling effect of the ultra-thin gauge plate to be rolled. In the method for protecting the pattern of the roll during the rolling of the ultra-thin gauge plate disclosed in this solution, the service cycle of the pattern roll is increased from 3-4 times to 4-5 times, which prolongs the service life of the pattern roll and realizes the realization of the ultra-thin gauge pattern plate at the same time. batch rolling.

Figure 202110533675

Description

Method for protecting roller patterns during rolling of extremely-thin gauge plate
Technical Field
The invention relates to the technical field of metallurgical industry, in particular to a method for protecting roll patterns during rolling of an extremely thin gauge plate.
Background
The checkered plate has the characteristics of attractive appearance, skid resistance, easiness in cleaning, steel saving and the like. When the pattern plate with the ultrathin specification is subjected to finish rolling, the reduction rate is high, the rolling load is heavy, and the rolling mill has rolling pressure of about 400T when the rolling mill is in no-load, so that the patterns of the rolls which are rolled off after the pattern plate with the ultrathin specification is rolled are all damaged seriously, the service cycle of the pattern rolls of the rolling mill is shortened, and the production cost of enterprises is increased.
Therefore, how to prolong the service life of the checkered roller of the lower rolling mill becomes a technical problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above, the present invention provides a method for protecting roll patterns during rolling of an extremely thin gauge plate, so as to prolong the service life of a pattern roll of a lower rolling mill.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for protecting roll patterns during rolling of an extremely thin gauge plate comprises the following steps:
1) the roll gap of a patterned roll of a rolling machine is enlarged, and the rolling pressure of the patterned roll is reduced;
2) feeding the ultrathin gauge plates to be rolled into a rolling machine, wherein the rollers positioned in front of the pattern rollers of the rolling machine roll the ultrathin gauge plates to be rolled in sequence;
3) when the ultrathin gauge plate to be rolled enters at least one roller positioned in front of the checkered roller, the roller gap of the checkered roller is reduced, the rolling pressure of the checkered roller is increased, and the at least one roller positioned in front of the checkered roller and the checkered roller are used for rolling the ultrathin gauge plate to be rolled in sequence.
Preferably, in the method for protecting a roll pattern in rolling of the ultrathin gauge plate, the pattern roll of the rolling mill is a pattern roll after the rolling is performed 2 to 3 times.
Preferably, in the method for protecting a roll pattern in rolling of the ultrathin gauge sheet, the step 3) further includes a step 31):
when the patterned rollers roll the tail part of the ultrathin gauge plate to be rolled, the patterned rollers are lifted linearly and automatically at the speed of 0.05-0.1mm/s, and the roll gap between the patterned rollers is increased by 0.3-0.5 mm.
Preferably, in the method for protecting a roll pattern in rolling of an extremely thin gauge plate, in the step 31), the length of the tail is at least 10 m.
According to the method for protecting the roll patterns during rolling of the ultrathin gauge plate, provided by the invention, when the pattern roll is in no-load, the roll gap between the upper roll and the lower roll of the pattern roll is increased, the abrasion of the patterns on the pattern roll during no-load is reduced, before the ultrathin gauge plate to be rolled enters the pattern roll, the roll gap between the upper roll and the lower roll of the pattern roll is decreased, the distance between the upper roll and the lower roll of the pattern roll is ensured to meet the rolling pressure of the ultrathin gauge plate to be rolled, and the rolling effect of the ultrathin gauge plate to be rolled is ensured. According to the method for protecting the roller patterns during rolling of the ultrathin specification plate, the service cycle of the pattern roller is prolonged from 3-4 times to 4-5 times, the service life of the pattern roller is prolonged, and batch rolling of the ultrathin specification pattern plates is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method for protecting a roll pattern during rolling of an extremely thin gauge sheet according to an embodiment of the present invention.
Detailed Description
The invention discloses a method for protecting roller patterns during rolling of an extremely thin gauge plate, which is used for prolonging the service life of a pattern roller of a lower rolling mill.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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.
Please refer to fig. 1.
The invention discloses a method for protecting roll patterns during rolling of an extremely thin gauge plate, which comprises the following steps:
1) the roll gap of a checkered roll of a rolling machine is adjusted to be large, the rolling pressure of the checkered roll is reduced, and the final arrangement of the checkered roll is carried out when an extremely thin specification plate to be rolled tracks and activates the checkered roll;
2) feeding the ultrathin gauge plate to be rolled into a rolling machine, wherein a roller of the rolling machine positioned in front of the pattern roller sequentially rolls the ultrathin gauge plate to be rolled;
3) when the ultrathin gauge plate to be rolled enters at least one roller positioned in front of the checkered roller, the roller gap of the checkered roller is reduced, the rolling pressure of the checkered roller is increased, and the at least one roller and the checkered roller roll the ultrathin gauge plate to be rolled in sequence.
Normally, the checkered roller is arranged when receiving data of an extremely thin gauge plate to be rolled, but when the extremely thin gauge plate is rolled, because the rolling between an upper roller and a lower roller of the checkered roller is large and the roller characteristics of the checkered roller are high, the rolling pressure of about 300 tons still exists between the upper roller and the lower roller when the checkered roller is in no load, the abrasion of the checkered roller can be intensified by keeping the rolling pressure for a long time, and therefore when the position is pre-arranged, the checkered roller selects a large roll gap, and when the finish rolling tracking is activated, the final arrangement of the checkered roller is carried out, so that the abrasion of the checkered roller is reduced.
And finally, the position is set to reduce the roll gap between the upper and lower rolls of the patterned roll to the rolling distance.
The finish rolling tracking is activated by a signal that the ultrathin gauge plate to be rolled enters at least one roller positioned in front of the checkered roller, namely the ultrathin gauge plate to be rolled enters the checkered roller immediately after passing through at least one roller positioned in front of the checkered roller, further, at least one roller positioned in front of the checkered roller is at least one roller closest to the checkered roller in the conveying direction, the roller closest to the checkered roller is a first roller, the roller next to the checkered roller is a second roller, and the like. Preferably, the roll gap of the patterned roll is adjusted at a time point when the extremely thin gauge plate to be rolled enters the second roll before the patterned roll.
In the process of adjusting the roll gap by the patterned roll, the ultrathin gauge plate to be rolled is rolled on the roll all the time without stopping the machine.
After the rolling rolls before the pattern roll the ultrathin gauge plate to be rolled in sequence, patterns are rolled on the ultrathin gauge plate to be rolled through the pattern roll.
Because the thickness of the ultrathin gauge plate to be rolled is thinner, if the roller with the newly ground pattern is used for rolling, the possibility of breaking the ultrathin gauge plate to be rolled exists, and therefore the pattern roller of the rolling machine adopts the roller with the reduced pattern thickness after being operated for 2-3 times.
The method for protecting the roller patterns during rolling of the ultrathin gauge plate disclosed by the scheme has the advantages that the step 3) also comprises the step 31) that when the pattern roller rolls the tail part of the ultrathin gauge plate to be rolled, the upper roller of the pattern roller needs to be lifted, so that the roll gap of the pattern roller is increased by 0.3-0.5mm, and the pattern abrasion of the pattern roller caused by the fact that the tail part of the ultrathin gauge plate to be rolled is rolled thoroughly and the like is avoided.
Specifically, when the checkered plate is rolled, when the tail part of the ultrathin gauge plate reaches the last but one roller of the rolling machine, the checkered roller of the checkered roller frame starts to be lifted up linearly and automatically at the speed of 0.05-0.1mm/s, and when the tail part of the ultrathin gauge plate reaches the checkered roller frame, the roller gap of the checkered roller frame is increased by 0.3-0.5 mm.
Preferably, the roll gap of the patterned roll is increased when at least 10m remains at the tail of the extremely thin gauge plate to be rolled.
According to the method for protecting the roller patterns during rolling of the ultrathin specification pattern plate, the service cycle of the pattern roller is prolonged from 3-4 times to 4-5 times, and batch rolling of the ultrathin specification pattern plate is realized.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (4)

1.一种极薄规格板轧制时保护轧辊花纹的方法,其特征在于,包括步骤:1. a method for protecting roll pattern during rolling of an extremely thin gauge plate, is characterized in that, comprises the steps: 1)调大轧制机的花纹辊的辊缝,减小所述花纹辊的轧制压力;1) Increase the roll gap of the pattern roll of the rolling mill and reduce the rolling pressure of the pattern roll; 2)将待轧制的极薄规格板送入轧制机,所述轧制机位于所述花纹辊之前的轧辊依次对待轧制的所述极薄规格板进行轧制;2) sending the ultra-thin gauge plate to be rolled into a rolling mill, and the rolls of the rolling mill located in front of the patterned rollers sequentially roll the ultra-thin gauge plate to be rolled; 3)在待轧制的所述极薄规格板进入位于所述花纹辊之前的至少一个轧辊时,调小所述花纹辊的辊缝,增大所述花纹辊的轧制压力,位于所述花纹辊之前的至少一个所述轧辊和所述花纹辊依次对待轧制的所述极薄规格板进行轧制。3) When the ultra-thin gauge plate to be rolled enters at least one roll located before the patterned roll, the roll gap of the patterned roll is reduced, and the rolling pressure of the patterned roll is increased, and the rolling pressure of the patterned roll is increased. At least one of the rolls before the pattern roll and the pattern roll sequentially roll the ultra-thin gauge plate to be rolled. 2.根据权利要求1所述的极薄规格板轧制时保护轧辊花纹的方法,其特征在于,所述轧制机的花纹辊为进行2-3次上机后的花纹辊。2 . The method for protecting a roll pattern during rolling of an ultra-thin gauge plate according to claim 1 , wherein the pattern roll of the rolling machine is a pattern roll after 2-3 times of rolling. 3 . 3.根据权利要求1所述的极薄规格板轧制时保护轧辊花纹的方法,其特征在于,所述步骤3)还包括步骤31):3. The method for protecting the pattern of the roll during rolling of the ultra-thin gauge plate according to claim 1, wherein the step 3) further comprises a step 31): 在所述花纹辊对待轧制的极薄规格板的尾部进行轧制时,所述花纹辊按照0.05-0.1mm/s的速度呈线性自动上抬,增大所述花纹辊之间的辊缝0.3-0.5mm。When the patterned rollers roll the tail of the ultra-thin gauge plate to be rolled, the patterned rollers are automatically lifted linearly at a speed of 0.05-0.1 mm/s, increasing the roll gap between the patterned rollers 0.3-0.5mm. 4.根据权利要求3所述的极薄规格板轧制时保护轧辊花纹的方法,其特征在于,所述步骤31)中,所述尾部的长度至少为10m。4 . The method for protecting the roll pattern during rolling of an ultra-thin gauge plate according to claim 3 , wherein, in the step 31), the length of the tail is at least 10m. 5 .
CN202110533675.2A 2021-05-17 2021-05-17 Method for protecting roller patterns during rolling of extremely-thin gauge plate Pending CN113198846A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118060387A (en) * 2024-04-19 2024-05-24 西南石油大学 Rolling forming integrated device for bipolar plate of hydrogen fuel cell and manufacturing method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102284510A (en) * 2011-07-14 2011-12-21 莱芜钢铁集团有限公司 Method for preventing no-load roll of end frame of rolling mill from being bitten
CN103170507A (en) * 2013-03-26 2013-06-26 鞍钢股份有限公司 Method for preventing surface of strip steel from being scratched when strip steel passes through finishing mill

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102284510A (en) * 2011-07-14 2011-12-21 莱芜钢铁集团有限公司 Method for preventing no-load roll of end frame of rolling mill from being bitten
CN103170507A (en) * 2013-03-26 2013-06-26 鞍钢股份有限公司 Method for preventing surface of strip steel from being scratched when strip steel passes through finishing mill

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118060387A (en) * 2024-04-19 2024-05-24 西南石油大学 Rolling forming integrated device for bipolar plate of hydrogen fuel cell and manufacturing method

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