CN117265446A - Cold rolling sink roll steady operation device - Google Patents

Cold rolling sink roll steady operation device Download PDF

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Publication number
CN117265446A
CN117265446A CN202311089190.4A CN202311089190A CN117265446A CN 117265446 A CN117265446 A CN 117265446A CN 202311089190 A CN202311089190 A CN 202311089190A CN 117265446 A CN117265446 A CN 117265446A
Authority
CN
China
Prior art keywords
sleeve
section
roll
cold
shaft seat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311089190.4A
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Chinese (zh)
Inventor
李恒山
王毅
杜蓉
何明生
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Iron and Steel Co Ltd
Original Assignee
Wuhan Iron and Steel Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan Iron and Steel Co Ltd filed Critical Wuhan Iron and Steel Co Ltd
Priority to CN202311089190.4A priority Critical patent/CN117265446A/en
Publication of CN117265446A publication Critical patent/CN117265446A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003Apparatus
    • C23C2/0034Details related to elements immersed in bath
    • C23C2/00342Moving elements, e.g. pumps or mixers
    • C23C2/00344Means for moving substrates, e.g. immersed rollers or immersed bearings
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06Zinc or cadmium or alloys based thereon
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36Elongated material
    • C23C2/40Plates; Strips

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

The invention relates to the technical field of cold rolling sink roll operation, and discloses a cold rolling sink roll steady operation device which comprises a horizontal roll sleeve, wherein the roll sleeve is hollow and comprises a middle section positioned in the middle of the roll sleeve, extension sections positioned at two sides of the middle section, an outer section positioned at the outer side of the extension sections and a tip section positioned at the end part of the roll sleeve, the inner diameter of the tip section is larger than that of the outer section and larger than that of the extension sections, a first reinforcing rib plate is arranged between the extension sections and the middle section in the roll sleeve, a second reinforcing rib plate is arranged between the outer section and the extension sections, an end plate is arranged at the tip section, a horizontal shaft head is arranged on the end plate, a counterweight flange is sleeved on the shaft head and is tightly attached to the end plate, the shaft head is assembled on a bearing seat, and a plurality of equally-divided round holes are arranged on the first reinforcing rib plate and the second reinforcing rib plate. The cold-rolling submerged roller steady operation device ensures the submerged roller to run steadily, prolongs the service life of the submerged roller, reduces the failure rate of equipment, improves the efficiency and meets the requirements of cold-rolling strip steel production technology.

Description

Cold rolling sink roll steady operation device
Technical Field
The invention relates to the technical field of cold-rolling submerged roller operation, in particular to a cold-rolling submerged roller steady operation device.
Background
Hot galvanizing is the most economical and effective method for preventing steel corrosion at present, and along with the increasingly wide application of cold-rolled automobile plates and household appliance plates, the requirements of users on the surface quality of strip steel are higher and higher. The main equipment of the strip steel hot galvanizing unit is a zinc pot, and the sink roll device is a main component of the zinc pot. The sink roll is immersed in molten zinc liquid at 470 ℃, is easy to deform and unstable to run, is corroded by the zinc liquid with strong activity, is easy to generate pitting pits on the roll surface, is easy to wear due to adhesion of a large amount of zinc slag, forms marks on the surface of strip steel, and causes uneven surface thickness.
In addition, zinc liquid enters into the bearing to corrode and abrade the shaft sleeve bearing bush, the bearing is blocked and rotates unstably, the sink roll is easy to shake, vibration marks are easy to appear on the surface of the strip steel, the surface quality of hot galvanizing products is influenced, the service life of the sink roll is influenced, and a large amount of waste products and energy losses are caused.
Disclosure of Invention
The invention aims at overcoming the defects of the technology, and provides a cold-rolled sink roll steady operation device, which ensures the sink roll to stably operate, prolongs the service life of the sink roll, reduces the equipment failure rate, improves the efficiency and meets the requirements of the cold-rolled strip steel production technology.
The cold rolling sink roll steady operation device comprises a horizontal roll sleeve, wherein the roll sleeve is hollow and comprises a middle section positioned in the middle of the roll sleeve, extension sections positioned at two sides of the middle section, an outer section positioned at the outer side of the extension sections and a tip section positioned at the end part of the roll sleeve, the inner diameter of the tip section is larger than that of the outer section and larger than that of the extension sections, a first reinforcing rib plate is arranged between the extension sections and the middle section in the roll sleeve, a second reinforcing rib plate is arranged between the outer section and the extension sections, an end plate is arranged at the tip section, the strength and rigidity of the roll sleeve are improved, the weight of the roll sleeve is reduced, a horizontal shaft head is arranged on the end plate, a counterweight flange is sleeved on the shaft head and clings to the end plate, the dynamic balance of the roll sleeve is adjusted to enable the roll sleeve to move steadily, the shaft heads are assembled on a bearing seat, and a plurality of round holes are formed in the first reinforcing rib plate and the second reinforcing rib plate.
Preferably, the surface of the roller sleeve is respectively provided with a left spiral groove and a right spiral groove from the center to two sides, so that zinc slag can flow smoothly and cannot adhere to the roller surface.
Preferably, the left spiral groove and the right spiral groove are coated with wear-resistant and corrosion-resistant nano WC-Co materials, so that zinc slag is not easy to adhere to the surface of the roller sleeve, and the surface of the roller sleeve is more wear-resistant and corrosion-resistant, so that strip steel surface marks are avoided.
Preferably, the bearing seat comprises a shaft sleeve sleeved on the shaft head, the shaft sleeve is sleeved with a bearing bush, the bearing bush is sleeved with a bushing, an upper shaft seat and a lower shaft seat are combined on the periphery of the bushing, one end of the bushing extends inwards to prop against the end part of the bearing bush, a step is arranged on the other end of the bushing inwards, a sealing flange arranged on the step is arranged on the shaft head, a sealing cover is arranged on one side, close to the roller sleeve, of the bearing seat, an end cover is arranged on the other side of the bearing seat, the sealing cover is fixedly arranged on the upper shaft seat, the lower shaft seat and the sealing flange through bolts, and the end cover is fixedly arranged on the upper shaft seat, the lower shaft seat and the bushing through bolts.
Preferably, a bolt protection cover is arranged on a nut of the bolt, so that the zinc liquid is prevented from corroding the bolt, the bolt of the bearing seat is convenient to detach, and the shaft sleeve bearing bush is convenient to replace.
Preferably, a first graphite seal is arranged between the sealing cover and the upper shaft seat, between the sealing cover and the lower shaft seat, and between the sealing cover and the sealing flange, so that zinc liquid is prevented from entering the bearing, and the bearing bush of the shaft sleeve is prevented from being corroded and worn, and the running stability of the bearing bush is influenced.
Preferably, a second graphite seal is arranged between the end cover and the upper shaft seat, between the end cover and the lower shaft seat, and between the end cover and the lining, so that zinc liquid is prevented from entering the bearing, and the bearing bush of the shaft sleeve is prevented from being corroded and worn, and the running stability of the bearing bush is influenced.
Preferably, a third graphite seal is arranged between the bearing bush and the lining bush to prevent zinc liquid from entering the bearing, and the bearing bush of the shaft sleeve is corroded and worn to influence the running stability of the bearing bush.
Preferably, a fourth graphite seal is arranged between the bearing bush, the bushing and the sealing flange to prevent zinc liquid from entering the bearing and corroding and wearing the bearing bush of the shaft sleeve to influence the running stability of the bearing bush.
Compared with the prior art, the invention has the following advantages:
1. the roller sleeve with the hollow structure is light in weight, the reinforcing rib plates are added, the strength and the rigidity of the roller sleeve are improved, and the balance weight flanges are added at the two ends of the roller sleeve to keep dynamic balance, so that the roller sleeve works stably;
2. grooves which are spiral from the center of the roller sleeve to the left and the right of the two sides of the roller sleeve enable zinc slag to flow more smoothly;
3. the wear-resistant and corrosion-resistant nano WC-Co material is sprayed in the groove of the roller sleeve, zinc slag is not easy to adhere to the surface of the roller sleeve, the surface of the roller sleeve is more wear-resistant and corrosion-resistant, and strip steel surface marks are avoided;
4. the sealing effect of the shaft sleeve bearing bush of the roller sleeve is good, the corrosion and abrasion of zinc liquid are avoided, the service life is long, and the operation is stable.
Drawings
FIG. 1 is a schematic diagram of a cold-rolled sink roll steady operation device according to the present invention;
FIG. 2 is a schematic view of the outer surface of the cold-rolled submerged roll smooth-running apparatus of the present invention;
fig. 3 is a schematic view of the bearing housing of fig. 1.
The reference numerals of the components in the drawings are as follows:
the roller sleeve 1, the middle section 2, the extension section 3, the outer side section 4, the end section 5, the first reinforcing rib plate 6, the second reinforcing rib plate 7, the end plate 8, the shaft head 9, the counterweight flange 10, the round hole 11, the left spiral groove 12, the right spiral groove 13, the shaft sleeve 14, the bearing bush 15, the bushing 16, the upper shaft seat 17, the lower shaft seat 18, the step 19, the sealing flange 20, the sealing cover 21, the end cover 22, the bolt 23, the bolt protection cover 24, the first graphite seal 25, the second graphite seal 26, the third graphite seal 27 and the fourth graphite seal 28.
Detailed Description
The invention will now be described in further detail with reference to the drawings and to specific examples.
As shown in fig. 1, the cold rolling sink roll steady operation device comprises a horizontal roll sleeve 1, wherein the roll sleeve 1 is hollow and comprises a middle section 2 positioned in the middle of the roll sleeve 1, extension sections 3 positioned on two sides of the middle section 2, an outer side section 4 positioned on the outer side of the extension sections 3 and a tip section 5 positioned at the end part of the roll sleeve 1, the inner diameter of the tip section 5 is larger than that of the outer side section 4 and larger than that of the extension sections 3, the inner diameter of the extension sections 3 is larger than that of the middle section 2, a first reinforcing rib plate 6 is arranged between the extension sections 3 and the middle section 2 in the roll sleeve 1, a second reinforcing rib plate 7 is arranged between the outer side section 4 and the extension sections 3, an end plate 8 is arranged on the tip section 5, a horizontal shaft head 9 is arranged on the end plate 8, a counterweight flange 10 is sleeved on the shaft head 9 and is tightly attached to the end plate 8, the shaft head 9 is assembled on a bearing seat, and a plurality of equally-distributed round holes 11 are arranged on the first reinforcing rib plate 6 and the second reinforcing rib plate 7.
In addition, as shown in fig. 2, the surface of the roller sleeve 1 is respectively provided with a left spiral groove 12 and a right spiral groove 13 from the center to two sides, so that zinc slag flows smoothly and cannot adhere to the roller surface, wear-resistant and corrosion-resistant nano WC-Co materials are sprayed in the left spiral groove 12 and the right spiral groove 13, so that zinc slag cannot easily adhere to the surface of the roller sleeve 1, the surface of the roller sleeve 1 is more wear-resistant and corrosion-resistant, and strip steel surface marks are avoided.
In this embodiment, as shown in fig. 3, the bearing seat includes a shaft sleeve 14 sleeved on the shaft head 9, the shaft sleeve 14 is sleeved with a bearing bush 15, the bearing bush 15 is sleeved with a bushing 16, an upper shaft seat 17 and a lower shaft seat 18 are combined on the periphery of the bushing 16, one end of the bushing 16 extends inwards to abut against the end part of the bearing bush 15, a step 19 is arranged on one inward side of the other end of the bushing 16, a sealing flange 20 mounted on the step 19 is arranged on the shaft head 9, a sealing cover 21 is arranged on one side, close to the roll sleeve 1, of the bearing seat, an end cover 22 is arranged on the other side, the sealing cover 21 is fixedly mounted on the upper shaft seat 17, the lower shaft seat 18 and the sealing flange 20 through bolts 23, and the end cover 22 is fixedly mounted on the upper shaft seat 17, the lower shaft seat 18 and the bushing 16 through bolts 23.
In this embodiment, the screw cap of the screw 23 is provided with a screw protection cover 24, so that the screw 23 is prevented from being corroded by zinc liquid, the screw 23 of the bearing seat is convenient to detach, and the bearing bush 15 of the shaft sleeve 14 is convenient to replace.
In this embodiment, a first graphite seal 25 is arranged between the sealing cover 21 and the upper shaft seat 17, a second graphite seal 26 is arranged between the end cover 22 and the upper shaft seat 17, between the lower shaft seat 18 and the sealing flange 20, a third graphite seal 27 is arranged between the bearing bush 15 and the sealing flange 16, and a fourth graphite seal 28 is arranged between the bearing bush 15, the sealing flange 20 and the sealing sleeve 16, so that zinc liquid is prevented from entering the bearing, and the bearing bush 15 of the shaft sleeve 14 is corroded and worn, and the running stability of the bearing bush is affected.
When the embodiment is assembled, firstly, the roller sleeve 1 is processed according to the figure; secondly, assembling a left reinforcing rib plate and a right reinforcing rib plate 6 at the steps of the middle section 2 and the extension section 3 respectively for fixation; thirdly, assembling a left reinforcing rib plate and a right reinforcing rib plate 7 at the step positions of the extension section 3 and the outer side section 4 respectively for fixation; fourthly, assembling the left end plate 8 and the right end plate 8 to the end head section 5 for fixation; fifthly, assembling left and right pieces of the shaft head 9 into the end plate 8 for fixation, and assembling left and right pieces of the counterweight flange 10 into the shaft head 9 to be closely attached to the end plate 8; and a sixth step, spraying a wear-resistant and corrosion-resistant nano WC-Co material in the left spiral groove 12 and the right spiral groove 13.
In addition, the bearing seat is assembled by first assembling the bushing 16, the third graphite seal 27, the bearing bush 15, the fourth graphite seal 28, the sealing flange 20, the shaft sleeve 14, the upper shaft seat 17 and the lower shaft seat 18, then installing the first graphite seal 25, the sealing cover 21, the shaft head 9, the second graphite seal 26 and the end cover 22, fixing the bolts 23 on the upper shaft seat 17, the lower shaft seat 18 and finally installing the bolt protection cover 24.
According to the invention, the reinforcing rib plates are added in the roll sleeve 1, and the left end plate and the right end plate 8 are added at the two ends of the roll sleeve 1, so that the strength and the rigidity of the roll sleeve are improved, and the weight of the whole roll sleeve 1 is reduced. And a counterweight flange 10 is respectively added on two sides of the left end plate 8 and the right end plate 8 of the roller sleeve 1, and the dynamic balance of the roller sleeve 1 is regulated to ensure that the roller sleeve moves stably.
In addition, the surface of the roller sleeve 1 is designed into a groove which is spiral from the center to the left and right sides, the size of the groove enables zinc slag to flow smoothly, zinc slag cannot adhere to the roller surface, and the groove finished by machining is sprayed with a wear-resistant and corrosion-resistant nano WC-Co material, so that zinc slag cannot easily adhere to the surface of the roller sleeve 1, the surface of the roller sleeve 1 is more wear-resistant and corrosion-resistant, and strip steel surface marks are avoided.
Finally, graphite seals are added on two end faces of the bearing seat, and an end cover 22 and a sealing cover 21 are respectively added for sealing, so that two seals are realized, zinc liquid is prevented from entering the bearing, the bearing bush 15 of the shaft sleeve 14 is corroded and worn, the running stability of the bearing bush is influenced, the bearing bush is fixed on the two end faces of the bearing seat through bolts 23, a protective cover is added outside the bolts 23, the corrosion of the zinc liquid is avoided, the bolts 23 of the bearing seat are convenient to detach, the bearing bush 15 of the shaft sleeve 14 is convenient to replace, the service life of the roller sleeve 1 is prolonged, the roller sleeve 1 is enabled to run stably, the production technology requirement is met, and the quality requirement of strip steel products is met.
According to the cold rolling sinking roller steady operation device, the roller sleeve 1 with a hollow structure is light in weight, the reinforcing rib plates are added, the strength and the rigidity of the roller sleeve are improved, the balance weight flanges 10 are added at the two ends of the roller sleeve 1, so that dynamic balance is maintained, and the work is stable; grooves which are spiral from the center of the roller sleeve 1 to the left and the right sides enable zinc slag to flow more smoothly; the wear-resistant and corrosion-resistant nano WC-Co material is sprayed in the groove of the roller sleeve 1, zinc slag is not easy to adhere to the surface of the roller sleeve 1, the surface of the roller sleeve 1 is more wear-resistant and corrosion-resistant, and strip steel surface marks are avoided; the shaft sleeve 14 of the roller sleeve 1 has good sealing effect of the bearing bush 15, avoids the corrosion and abrasion of zinc liquid, and has long service life and stable operation.

Claims (9)

1. The utility model provides a cold rolling sink roll steady operation device, includes horizontal roller shell (1), its characterized in that: the roll sleeve (1) is hollow, including being located middle section (2) in roll sleeve (1) middle part, be located extension section (3) in middle section (2) both sides, be located outside section (4) in extension section (3) outside and be located end section (5) of roll sleeve (1) tip, the internal diameter of end section (5) is greater than the internal diameter of outside section (4) is greater than the internal diameter of extension section (3) is greater than the internal diameter of middle section (2), be equipped with first deep web (6) in roll sleeve (1) between extension section (3) and middle section (2) be equipped with second deep web (7) between outside section (4) with be equipped with end plate (8) in end section (5), be equipped with horizontally on end plate (8) counter weight flange (10) and hug closely on end plate (9) shaft head (8), on bearing frame (9) assembly is equipped with first deep web (6) and second deep web (7) are equipped with a plurality of equal division on end plate (11).
2. The cold-rolled sink roll steady operation device according to claim 1, characterized in that: the surface of the roller sleeve (1) is respectively provided with a left spiral groove (12) and a right spiral groove (13) from the center to two sides.
3. The cold-rolled sink roll steady operation device according to claim 1, characterized in that: the left spiral groove (12) and the right spiral groove (13) are coated with wear-resistant and corrosion-resistant nano WC-Co materials.
4. The cold-rolled sink roll steady operation device according to claim 1, characterized in that: the bearing pedestal comprises a shaft sleeve (14) sleeved on the shaft head (9), the shaft sleeve (14) is sleeved with a bearing bush (15), the bearing bush (15) is sleeved with a lining (16), an upper shaft seat (17) and a lower shaft seat (18) are combined on the periphery of the lining (16), one end of the lining (16) extends inwards to prop against the end part of the bearing bush (15), a step (19) is arranged on the inner side of the other end of the lining (16), a sealing flange (20) arranged on the step (19) is arranged on the shaft head (9), a sealing cover (21) is arranged on one side, close to the roller sleeve (1), of the bearing pedestal, an end cover (22) is arranged on the other side of the bearing pedestal, and the sealing cover (21) is fixedly arranged on the upper shaft seat (17), the lower shaft seat (18) and the sealing flange (20) through bolts (23) and fixedly arranged on the upper shaft seat (17), the lower shaft seat (18) and the lining (16).
5. The cold-rolled submerged roll smooth-running apparatus of claim 4, wherein: a screw cap of the screw (23) is provided with a screw protection cover (24).
6. The cold-rolled submerged roll smooth-running apparatus of claim 4, wherein: a first graphite seal (25) is arranged between the sealing cover (21) and the upper shaft seat (17), the lower shaft seat (18) and the sealing flange (20).
7. The cold-rolled submerged roll smooth-running apparatus of claim 4, wherein: a second graphite seal (26) is arranged between the end cover (22) and the upper shaft seat (17), the lower shaft seat (18) and the bushing (16).
8. The cold-rolled submerged roll smooth-running apparatus of claim 4, wherein: a third graphite seal (27) is arranged between the bearing bush (15) and the bushing (16).
9. The cold-rolled submerged roll smooth-running apparatus of claim 4, wherein: a fourth graphite seal (28) is arranged between the bearing bush (15), the bushing (16) and the sealing flange (20).
CN202311089190.4A 2023-08-25 2023-08-25 Cold rolling sink roll steady operation device Pending CN117265446A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311089190.4A CN117265446A (en) 2023-08-25 2023-08-25 Cold rolling sink roll steady operation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311089190.4A CN117265446A (en) 2023-08-25 2023-08-25 Cold rolling sink roll steady operation device

Publications (1)

Publication Number Publication Date
CN117265446A true CN117265446A (en) 2023-12-22

Family

ID=89207289

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311089190.4A Pending CN117265446A (en) 2023-08-25 2023-08-25 Cold rolling sink roll steady operation device

Country Status (1)

Country Link
CN (1) CN117265446A (en)

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