DEVICE WITH ADJUSTABLE OFFSET DISTANCE IN SERPENTINE ROLLING FOR ROLLING MILL AND USING METHOD THEREOF

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 202410898644.0, filed on Jul. 5, 2024, the contents of which are hereby incorporated by reference.

TECHNICAL FIELD

The present disclosure relates to the field of rolling equipment technology, and in particular to a device with an adjustable offset distance in serpentine rolling for a rolling mill and a method thereof.

BACKGROUND

Laminated metal composites may fully leverage the respective advantages of different metals, achieving complementary advantages and having broad application prospects in aerospace, new energy, transportation, military, and other fields. Currently, the most common preparation processes for laminated metal composites include rolling bonding, explosive bonding, and accumulative roll bonding. The rolling bonding process is widely applied due to the high production efficiency, ease of operation, and low cost. However, conventional rolling bonding processes suffer from issues such as severe plate camber after rolling, uncoordinated fluidity of dissimilar metals, and low bonding strength at the composite interface. To address these issues, serpentine rolling has been widely concerned due to the ability to form a certain displacement difference in the rolling direction between the upper and lower roll systems and generate a strong shear force at the composite interface during the rolling process, thereby improving the deformation coordination of dissimilar metals and the bonding strength at the composite interface. Furthermore, solving the problem of the unadjustable offset distance between the upper and lower roll systems of serpentine rolling mills, i.e., the displacement difference in the rolling direction, and meeting the forming parameters and high-quality, high-precision production requirements of these new materials have become the key research focus at present.

However, current serpentine rolling mills for dissimilar metals have certain deficiencies. Firstly, the offset displacement of existing serpentine rolling mills is fixed. Different materials and specifications of dissimilar metal material combinations require different optimal rolling offset displacement parameters, but a single serpentine rolling mill may only meet one offset displacement parameter. Secondly, the operating costs are high. To meet the rolling composite offset displacement for different materials and specifications of dissimilar metal materials, multiple serpentine rolling mills are often required. Thirdly, it is difficult for a single existing serpentine rolling mill to precisely control the offset displacement parameters of the upper and lower rolls to achieve the optimal offset displacement parameters required for serpentine rolling of dissimilar metals and realize closed-loop control of the rolling process. Therefore, there is an urgent need for a device and a using method that may not only meet the offset displacement parameters for serpentine rolling of different materials and specifications of dissimilar metals but also reduce the operating costs of rolling mills and precisely control the upper and lower rolls to achieve the optimal offset displacement parameters required for serpentine rolling of dissimilar metals, enabling adjustable offset distance in serpentine rolling.

SUMMARY

An objective of the present disclosure is to provide a device with an adjustable offset distance in serpentine rolling for a rolling mill and a method thereof to solve the above problems, achieving the goals of not only meeting the offset displacement parameters for serpentine rolling of different materials and specifications of dissimilar metals but also reducing the operating costs of rolling mills and precisely controlling the upper and lower rolls to achieve the optimal offset displacement parameters required for serpentine rolling of dissimilar metals, enabling adjustable offset distance in serpentine rolling.

To achieve the above objective, the present disclosure provides the following solution: a device with an adjustable offset distance in serpentine rolling for a rolling mill, including a frame, offset moving components, an upper work roll, a lower work roll, telescopic components, lifting components, and a monitoring component. The offset moving components are connected to two sides of lower work roll bearing seats at a middle of the frame, and the offset moving components are connected to the lower work roll bearing seats, the lower work roll is arranged between the lower work roll bearing seats; the offset moving components are fixedly connected to the telescopic components; a top of the frame is fixedly connected to the lifting components, and the lifting components are fixedly connected to upper work roll bearing seats, and the upper work roll is arranged between the upper work roll bearing seats, and the monitoring component is provided at a rolling exit of the frame.

In some embodiments, the offset moving components include two first dovetail-shaped wedge blocks and two second dovetail-shaped wedge blocks, the first and second dovetail-shaped wedge blocks are respectively embedded in dovetail-shaped wedge slots in the middle of the frame; one of the first dovetail-shaped wedge blocks and one of the second dovetail-shaped wedge blocks are respectively arranged at two sides of one of the lower work roll bearing seats, and another of the first dovetail-shaped wedge blocks and another of the second dovetail-shaped wedge blocks are respectively arranged at two sides of another of the lower work roll bearing seats; and vertical side surfaces of the first and second dovetail-shaped wedge blocks respectively abut against and are parallel to side surfaces of the lower work roll bearing seats.

In some embodiments, the telescopic components include two telescopic hydraulic cylinders, brackets are fixedly connected to an outer side of the frame, bases of the telescopic hydraulic cylinders are fixedly connected to pulleys, and the pulleys are nested in pulley grooves of the brackets; and the telescopic hydraulic cylinders are arranged on and perpendicular to the outer side of the frame.

In some embodiments, the lifting components include two lifting hydraulic cylinders, the lifting hydraulic cylinders are fixedly connected to the top of the frame, and the lifting hydraulic cylinders are vertically arranged at the top of the frame.

In some embodiments, the monitoring component includes a plate camber measuring instrument, and the plate camber measuring instrument is vertically arranged at the rolling exit.

A use method of the device with the adjustable offset distance in serpentine rolling for the rolling mill includes the following steps:

• • step 1: synchronously driving the one of the first dovetail-shaped wedge blocks and the one of the second dovetail-shaped wedge blocks to move outwards or inwards the frame through telescopic force of telescopic hydraulic cylinders, so as to drive the lower work roll to move along a rolling direction; forming a predetermined offset displacement between the lower work roll and the upper work roll; forming displacement self-locking between the first and second dovetail-shaped wedge blocks and the respective dovetail-shaped wedge slots of the frame, and adjusting the offset displacement by gradually controlling a telescopic distance of the telescopic hydraulic cylinders; and
  • step 2: equipping the plate camber measuring instrument at the rolling exit to monitor a camber of a plate in real-time, feeding back plate camber data to a server, and adjusting and correcting the offset displacement through the server by adjusting the telescopic hydraulic cylinders, thereby achieving a closed-loop control of a rolling process.

Compared with existing serpentine rolling mills, the present disclosure has the following advantages and technical effects.

According to the present disclosure, the optimal offset displacement parameters for composites of different materials and specifications may be more precisely met by continuously adjusting the offset displacement in serpentine rolling, and the most suitable shear force is generated at the bonding interface to better coordinate the metal fluidity and plastic differences of dissimilar metals, thereby improving the plate shape quality and mechanical properties of metal laminated plates.

The present disclosure is applicable to flexible production of metal laminated plates of different materials and specifications, improving production efficiency and reducing production costs.

The present disclosure enables online dynamic adjustment throughout the rolling process of metal laminated plates, further enhancing the comprehensive performance of the metal laminated plates.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the embodiments of the present disclosure or the technical solution in the prior art more clearly, the drawings needed in the embodiments will be briefly introduced below. Apparently, the drawings in the following description are only some embodiments of the present disclosure. For one of ordinary skill in the art, other drawings may be obtained according to these drawings without creative effort:

FIG. 1 is a structural schematic diagram of a device with an adjustable offset distance in serpentine rolling for a rolling mill of the present disclosure.

FIG. 2A is a side view of the device of the present disclosure.

FIG. 2B is a partial enlarged view of portion A in FIG. 2A.

FIG. 3A is a schematic diagram of a lower work roll of the present disclosure at an initial position.

FIG. 3B is a cross-sectional view taken along line B-B in FIG. 3A.

FIG. 3C is a partial enlarged view of portion C in FIG. 3A.

FIG. 3D is a schematic diagram of the lower work roll of the present disclosure moving a distance.

FIG. 3E is a partial enlarged view of portion D in FIG. 3D.

FIG. 4A is a working schematic diagram of offset moving components during the movement of the lower work roll along the rolling direction.

FIG. 4B is a partial enlarged view of portion E in FIG. 4A.

FIG. 5A shows a structural schematic diagram of a bracket and a telescopic hydraulic cylinder of the present disclosure.

FIG. 5B is a partial enlarged view of portion F in FIG. 5A.

FIG. 6 is a structural schematic diagram of a first dovetail-shaped wedge block of the present disclosure.

FIG. 7 is a structural schematic diagram of a second dovetail-shaped wedge block of the present disclosure.

FIG. 8 is a flow chart diagram of the present disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

In the following, the technical solutions in the embodiments of the present disclosure will be clearly and completely described with reference to the attached drawings. Apparently, the described embodiments are only a part of the embodiments of the present disclosure, but not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by one of ordinary skill in the art without creative effort belong to the protection scope of the present disclosure.

In order to make the above objects, features and advantages of the present disclosure more obvious and easier to understand, the present disclosure will be further described in detail with the attached drawings and specific embodiments.

With reference to FIG. 1 to FIG. 7, this embodiment provides a device with an adjustable offset distance in serpentine rolling for a rolling mill, including a frame, offset moving components, upper and lower work rolls, telescopic components, lifting components, and a monitoring component. The offset moving components are connected to the left and right sides of the lower work roll bearing seats 8 in the middle of the frame 1, and the offset moving components are connected to the lower work roll bearing seats 8, and the lower work roll bearing seats 8 are connected to the lower work roll 9. The offset moving components are fixedly connected to the telescopic components. The top of the frame 1 is fixedly connected to the lifting components, and the lifting components are fixedly connected to the upper work roll bearing seats 6, and the upper work roll bearing seats 6 are connected to the upper work roll 2. A monitoring component is provided at the rolling exit of the frame 1.

In an embodiment, the offset moving components includes four of dovetail-shaped wedge blocks, the dovetail-shaped wedge blocks are respectively nested in the dovetail-shaped wedge slots in the middle of the frame 1, and the vertical surfaces of the dovetail-shaped wedge blocks are parallel to and abut against the side surfaces of the lower work roll bearing seats 8, respectively. The inclined surfaces of the dovetail-shaped wedge blocks respectively mate with the inclined surfaces of dovetail-shaped wedge slots. The dovetail-shaped wedge blocks include two first dovetail-shaped wedge blocks 10 and two second dovetail-shaped wedge blocks 11. A first dovetail-shaped wedge block 10 and a second dovetail-shaped wedge block 11 are respectively located at two sides of one of the lower work roll bearing seats 8. The other first dovetail-shaped wedge block 10 and the other second dovetail-shaped wedge block 11 are respectively located at two sides of the other of the lower work roll bearing seats 8. During sliding, an offset angle is formed between the dovetail-shaped wedge blocks and the dovetail-shaped wedge slots in the middle of the frame 1, and self-locking is formed at the predetermined position, improving the stability of the lower work roll 9.

In an embodiment, the telescopic components include two telescopic hydraulic cylinders 12. The base of the telescopic hydraulic cylinder 12 is fixedly connected to pulleys 13, and the pulleys 13 are nested in the pulley grooves of the bracket 7. The bottoms of the brackets 7 are fixedly connected to the outer side of the frame 1, and the telescopic hydraulic cylinder 12 is arranged on and perpendicular to the outer side of the frame 1. The output ends of the two telescopic hydraulic cylinders 12 are respectively connected to the first dovetail-shaped wedge block 10 and the second dovetail-shaped wedge block 11 at the same side. The telescopic hydraulic cylinders 12 drives the first dovetail-shaped wedge block 10 and the second dovetail-shaped wedge block 11 to move. The dovetail-shaped wedge blocks are guided through the inclined surfaces of dovetail-shaped wedge slots and slide along the inclined surfaces of dovetail-shaped wedge slots, driving the lower work roll bearing seats 8 to move along the direction perpendicular to the axial direction of the lower work roll 9, so that the lower work roll 9 moves through the lower work roll bearing seats 8, and the offset displacement is formed between the lower work roll 9 and the upper work roll 2. The brackets 7 may prevent offset deviations or personal safety issues caused by improper manual operation during the sliding of the offset moving components, improving operation safety and the accuracy of offset moving. The pulleys 13 produce adaptive sliding in the pulley grooves, preventing damage to the telescopic hydraulic cylinders 12 caused by the force inclined in the rolling direction generated during the internal and external movement of the offset moving component, ensuring that the telescopic hydraulic cylinders 12 are always perpendicular to the outer side of the frame 1, reducing workpiece scrap rates, and extending workpiece service life.

In an embodiment, the lifting components include two lifting hydraulic cylinders 3, the lifting hydraulic cylinders 3 are fixedly connected to the top of the frame 1. Output ends of the telescopic hydraulic cylinders are respectively connected to the upper work roll bearing seats 6. The lifting hydraulic cylinders 3 extend and contract to control the ascent and descent of the upper work roll bearing seats 6, thereby making the roll gap meet the requirements of the finished metal plate.

In an embodiment, the monitoring component includes a plate camber measuring instrument 4, the plate camber measuring instrument 4 is vertically arranged at the rolling exit. The plate camber measuring instrument 4 is used to monitor the camber of the metal plate.

A using method of the device with the adjustable offset distance in serpentine rolling for the rolling mill is provided, as shown in FIG. 8. The method includes the following steps.

• • S1: synchronously the first dovetail-shaped wedge block 10 and the second dovetail-shaped wedge block 11 are driven to move outwards or inwards the frame 1 through telescopic force of the telescopic hydraulic cylinders 12, so as to drive the lower work roll 9 to move along the rolling direction, a predetermined offset displacement is formed between the lower work roll 9 and the upper work roll 2. Displacement self-locking is formed between the dovetail-shaped wedge blocks and the respective dovetail-shaped wedge slots of the frame 1, and the offset displacement is adjusted by precisely and gradually controlling the telescopic distance of the telescopic hydraulic cylinders 12; and
  • S2: the plate camber measuring instrument 4 is equipped at the rolling exit to monitor the camber of the plate in real-time, the plate camber data is fed back to the server 5, and the offset moving through the server 5 is adjusted and corrected by adjusting the telescopic hydraulic cylinders 12, thereby achieving a closed-loop control of the rolling process.

Compared with existing rolling devices, the device according to the present disclosure enables arbitrary adjustment of the offset distance on a single rolling mill, meeting the optimal offset displacement parameters required for the rolling of different types, specifications, and processes of dissimilar metal combinations. In the rolling process, strong shear force may be generated between the metal matrix and the interface, achieving the deformation coordination of dissimilar metals and promoting the firm bonding of the interface.

In the description of the present disclosure, it should be understood that the terms “longitudinal”, “transverse”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc. indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, only for the convenience of describing the present disclosure, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure.

The above-mentioned embodiments only describe the preferred mode of the present disclosure, and do not limit the scope of the present disclosure. Under the premise of not departing from the design spirit of the present disclosure, various modifications and improvements made by one of ordinary skill in the art to the technical solution of the present disclosure should fall within the protection scope of the present disclosure.