Hot rolling mill for double-base compounding of inner-layer metal and outer-layer metal of roller
By adopting an adjustable double-base composite roll structure and alloy material on the hot rolling mill, the problem of fixed roll spacing was solved, enabling flexible adjustment of roll spacing and roll stability, adapting to rolled billets of different thicknesses, and improving roll durability and production adaptability.
Patent Information
- Application Number
- CN202423093816.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-16
AI Technical Summary
The fixed roll spacing of hot rolling mills cannot be adjusted, making them unsuitable for rolling billets of different thicknesses.
The adjustable double-base composite roll structure is adopted. The moving assembly seat is driven by a hydraulic push rod to move the roll. Combined with limit blocks and guide grooves, the roll spacing can be flexibly adjusted. Alloy ductile iron and alloy cast iron composite materials are used to improve the stability and durability of the roll.
It enables flexible adjustment of the roll spacing to adapt to rolled billets of different thicknesses, solves the problems of roll cracking and thermal fatigue, and improves the service life and production adaptability of the rolls.
Smart Images
Figure CN223518280U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hot rolling mill technical field especially relates to a kind of hot rolling mill for rolling inner and outer layer metal double-base composite. BACKGROUND
[0002] Hot rolling mill is a kind of metal blank heating to high temperature state, it is mainly used to produce various specifications of flat steel, square steel, round steel, sheet, strip steel and other materials, widely used in steel, aluminum alloy, copper and other metal smelting and processing industry, and the rolling inner and outer layer metal double-base composite material is a kind of high-performance lightweight composite material, mainly composed of metal material and non-metal material, usually by several layers of metal and non-metal material alternately stacked.
[0003] The present hot rolling mill is rolled, the inventor finds that: the rolling gap of hot rolling mill is fixed, the gap between the rolls cannot be adjusted, therefore, we propose a kind of hot rolling mill for rolling inner and outer layer metal double-base composite. UTILITY MODEL CONTENT
[0004] In order to overcome the defects of the prior art pointed out above, the present inventors have made in-depth research thereon, and after a lot of creative labor, the present utility model has been completed.
[0005] Specifically, the technical problem to be solved by the present utility model is to provide a kind of hot rolling mill for rolling inner and outer layer metal double-base composite, to solve the technical problem that the rolling gap of current hot rolling mill is fixed, and the gap between the rolls cannot be adjusted.
[0006] To solve the above technical problems, the present utility model provides the following technical solutions:
[0007] A kind of hot rolling mill for rolling inner and outer layer metal double-base composite, including hot rolling mill, the hot rolling mill has bearing shell, double-base composite roll of parallel arrangement is rotatably installed in the inner side of bearing shell, the inner side of bearing shell is installed with the symmetrical setting of fixed assembly seat, and one double-base composite roll is rotatably installed on the fixed assembly seat;
[0008] The limit block is fixedly installed in the inner side of bearing shell, the outer surface of limit block is slidably installed with dynamic assembly seat, and another double-base composite roll is rotatably installed on the dynamic assembly seat, the dynamic assembly seat is located directly above the fixed assembly seat, and the dynamic assembly seat is driven and adjusted by driving device.
[0009] As an improved technical solution, the double-base composite roll includes roll body, roll neck is installed on the both sides of roll body, center shaft is installed on the both sides of roll neck, and the center shaft is rotatably installed on the fixed assembly seat and the dynamic assembly seat.
[0010] As an improved technical scheme, the roll body is composed of an inner layer and an outer layer, and the inner layer is mounted on the inner side of the roll neck.
[0011] As an improved technical scheme, the inner layer is made of alloyed nodular cast iron, and the outer layer is made of alloyed cast iron.
[0012] As an improved technical scheme, the limiting block has an inverted H-shaped structure with a horizontal limiting part and a vertical limiting part.
[0013] One end of the horizontal limiting part is mounted on the bearing shell, and a limiting protrusion is formed at the joint of the horizontal limiting part and the vertical limiting part.
[0014] Sliding grooves are formed on both sides of the movable assembly seat and are in sliding connection with the vertical limiting part.
[0015] As an improved technical scheme, the driving device comprises a hydraulic push rod, the top of the hydraulic push rod is mounted on the bottom of the movable assembly seat, the bottom of the hydraulic push rod is mounted with a fixing seat, and the fixing seat is mounted on the inner side of the bearing shell.
[0016] After the above technical scheme is adopted, the present application has the following beneficial effects:
[0017] 1. In the present application, the hydraulic push rod is started, the movable assembly seat is moved by the hydraulic push rod, the double-base composite roll is moved by the movable assembly seat, and the double-base composite roll is moved away from another double-base composite roll until the distance between them is adjusted to the required distance. During this period, the movable assembly seat slides along the outer surface of the vertical limiting part of the limiting block and plays a limiting guiding role to ensure the stability of the double-base composite roll, thereby facilitating the adjustment of the distance between the double-base composite rolls and adapting to different thicknesses of the rolled stock.
[0018] 2. In the present application, the roll body is poured by combining horizontal centrifugal casting with top-pouring core filling method, and the outer layer and the inner layer of the roll body are respectively formed, so that the inner layer and the outer layer of the roll body are well metallurgically combined. Since the outer layer metal of the roll body is high-hardness alloy cast iron and the inner layer metal is alloy nodular cast iron with good strength and toughness, the problems of cracks, roll breakage and thermal fatigue of the roll can be solved. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0020] Figure 1 It is a schematic diagram of the overall structure of the hot rolling mill for double-base composite of inner and outer layers of the roll.
[0021] Figure 2 It is a schematic diagram of the connection structure between the bearing shell and the fixed assembly seat in the overall structure of the hot rolling mill for double-base composite of inner and outer layers of the roll.
[0022] Figure 3 It is a schematic diagram of the double-base composite roll structure in the overall structure of the hot rolling mill for double-base composite of inner and outer layers of the roll.
[0023] Explanation of reference signs:
[0024] In the drawings: 1, bearing shell; 201, inner layer; 202, outer layer; 203, roll neck; 204, center shaft; 3, fixed assembly seat; 4, movable assembly seat; 5, limiting block; 501, limiting protrusion; 6, hydraulic push rod; 7, fixed seat. DETAILED DESCRIPTION
[0025] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0026] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.
[0027] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that three schemes are included, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B schemes are satisfied at the same time.
[0028] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the present application.
[0029] Referring to Figures 1-3 , a kind of hot rolling mill for inner and outer layer metal double-base composite roll is provided, this hot rolling mill for inner and outer layer metal double-base composite roll includes, hot rolling mill, hot rolling mill has bearing housing 1, the double-base composite roll of parallel arrangement is rotatably installed in the inside of bearing housing 1, the inside of bearing housing 1 is installed with the symmetrical setting of fixed assembly seat 3, and one double-base composite roll is rotatably installed on fixed assembly seat 3;
[0030] Limiting block 5 is fixedly installed in the inside of bearing housing 1, slidingly installed with dynamic assembly seat 4 on the outer surface of limiting block 5, and another double-base composite roll is rotatably installed in dynamic assembly seat 4, dynamic assembly seat 4 is located directly above fixed assembly seat 3, dynamic assembly seat 4 is driven by driving device and is adjusted, so as to adjust the interval between double-base composite roll, in turn can adapt to the rolling blank of different thickness.
[0031] Referring to Figure 1 And Figure 3 , double-base composite roll includes roll body, roll neck 203 is installed on the two sides of roll body, center shaft 204 is installed on the two sides of roll neck 203, and center shaft 204 is rotatably installed on fixed assembly seat 3 and dynamic assembly seat 4.
[0032] Referring to Figure 1 And Figure 3 , roll body is composed of inner layer 201 and outer layer 202, and inner layer 201 is installed in the inside of roll neck 203.
[0033] Referring to Figure 1 And Figure 3The inner layer 201 is made of alloyed nodular cast iron, the outer layer 202 is made of alloyed cast iron, the inner layer 201 and the outer layer 202 are poured into the roll body by adopting the combination of horizontal centrifugal casting and top pouring core filling method, and the outer layer 202 and the inner layer 201 of the roll body are formed respectively, in the forming process, the outer layer 202 is formed first, and then the inner layer 201 is poured into the inner part of the outer layer 202, which increases the stability of the connection between the outer layer 202 and the inner layer 201, and realizes good metallurgical combination of the inner layer 201 and the outer layer 202 of the roll body, since the metal of the outer layer 202 of the roll body is high-hardness alloyed cast iron, and the metal of the inner layer 201 is alloyed nodular cast iron with good strength and toughness, the problems of crack, roll breakage and thermal fatigue of the roll can be solved.
[0034] With reference to Figure 1 and Figure 2 The limiting block 5 has an inverted H-shaped structure with horizontal limiting parts and vertical limiting parts.
[0035] One end of the horizontal limiting part is mounted on the bearing shell 1, and a limiting protrusion 501 is formed at the joint of the horizontal limiting part and the vertical limiting part.
[0036] Sliding grooves are formed on both sides of the movable assembly seat 4 and are in sliding connection with the vertical limiting parts, so as to play a limiting and guiding role and ensure the stability of the adjustment of the double-base composite roll.
[0037] With reference to Figure 1 and Figure 2 The driving device includes a hydraulic push rod 6, the top of the hydraulic push rod 6 is mounted on the bottom of the movable assembly seat 4, and the bottom of the hydraulic push rod 6 is provided with a fixed seat 7, which is mounted on the inner side of the bearing shell 1, so as to adjust the distance between the double-base composite rolls.
[0038] In actual use, when the distance between the double-base composite rolls needs to be adjusted, the hydraulic push rod 6 fixed on the fixed seat 7 is started, at this time, the hydraulic push rod 6 drives the movable assembly seat 4 fixed on the hydraulic push rod 6 to move, the movable assembly seat 4 drives the double-base composite rolls to move, and drives the double-base composite rolls to move away from the other double-base composite roll, until the distance between them is adjusted to the required distance (the required distance is determined according to the thickness of the rolled material), during which, the movable assembly seat 4 slides along the outer surface of the vertical limiting part of the limiting block 5 and plays a limiting and guiding role, so as to ensure the stability of the adjustment of the double-base composite roll, thereby facilitating the adjustment of the distance between the double-base composite rolls, and further adapting to rolled materials of different thicknesses. This device not only facilitates the adjustment of the distance between the rolls, but also adapts to rolled materials of different thicknesses.
[0039] It should be understood that the use of these embodiments is by way of illustration only and is not intended to limit the scope of the present application. In addition, it should also be understood that, after reading the technical content of the present application, those skilled in the art can make various modifications, modifications and / or variations to the present application, and all of these equivalent forms also fall within the protection scope defined by the claims attached to the present application.
Claims
1. A hot rolling mill for the production of metal double-base composites for the inner and outer layers of a roll, comprising a hot rolling mill having a load-bearing housing (1), characterized in that: The parallel double-base composite roller is rotatably installed in the bearing shell (1), and the bearing shell (1) is internally provided with symmetrically arranged fixed assembling bases (3), and one of the double-base composite rollers is rotatably installed on the fixed assembling base (3); The bearing shell (1) is internally fixedly provided with a limiting block (5), the outer surface of the limiting block (5) is slidably provided with a movable assembling base (4), and the other double-base composite roller is rotatably installed on the movable assembling base (4), the movable assembling base (4) is located directly above the fixed assembling base (3), and the movable assembling base (4) is driven and adjusted by a driving device.
2. The roll inner and outer layer metal double-base composite hot rolling machine according to claim 1, characterized in that: The double-base composite roller comprises a roller body, the two sides of the roller body are provided with roller necks (203), the two sides of the roller neck (203) are provided with central shaft rods (204), and the central shaft rod (204) is rotatably installed on the fixed assembling base (3) and the movable assembling base (4).
3. The hot rolling mill for metal double-base composite of inner and outer layers of a roll according to claim 2, characterized in that: The roller body is composed of an inner layer (201) and an outer layer (202), and the inner layer (201) is installed on the inner side of the roller neck (203).
4. The roll inner and outer layer metal double-base composite hot rolling machine according to claim 3, characterized in that: The inner layer (201) is made of alloyed nodular cast iron, and the outer layer (202) is made of alloyed cast iron.
5. The hot rolling mill for metal double-base composite of inner and outer layers of a roll according to claim 1, characterized in that: The limiting block (5) has an inverted H-shaped structure with a horizontal limiting part and a vertical limiting part. One end of the horizontal limiting part is installed on the bearing shell (1), and a limiting protrusion (501) is formed at the joint of the horizontal limiting part and the vertical limiting part. The two sides of the movable assembling base (4) are provided with sliding grooves matched with the vertical limiting part, and the sliding grooves are slidably connected with the vertical limiting part.
6. The roll inner and outer layer metal double-base composite hot rolling machine according to claim 5, characterized in that: The driving device comprises a hydraulic push rod (6), the top of the hydraulic push rod (6) is installed on the bottom of the movable assembling base (4), the bottom of the hydraulic push rod (6) is provided with a fixed seat (7), and the fixed seat (7) is installed on the inner side of the bearing shell (1).