An electromagnetic induction cladding rolling plate repair and strengthening device

Abstract

The present invention provides an electromagnetic induction cladding rolled plate repair and strengthening device, which belongs to the field of induction cladding technology, and includes: a front workbench with a roller embedded in the top; a lifting assembly, which is erected above the front workbench and drives a heating coil plate to lift and lower; a rolling mill bracket, which is arranged on one side of the front workbench, and two side plates are fixed on the top of both sides; the side plate is provided with two long grooves; a lower roller, whose two ends are respectively connected to the two side plates for rotation; a driving assembly, which is erected on the rolling mill bracket and drives the lower roller to rotate; two shaft seats, which are respectively slidably arranged in the two long grooves, and are respectively driven by an electric cylinder to slide in the two long grooves; an upper roller, which is rotatably arranged between the two shaft seats. The present invention designs a repair and strengthening processing device based on the concept of green manufacturing, high efficiency and low consumption, and low-carbon and environmentally friendly processing, which provides an effective way to solve the problem of plate defect repair and improve the surface performance of the plate.

Description

Technical Field

[0001] The invention relates to the technical field of induction cladding, and in particular to an electromagnetic induction cladding rolling plate repair and strengthening device. Background Art

[0002] High-frequency induction cladding is to place the specimen in an induction coil, energize the induction heating equipment, and use the principle of electromagnetic induction to generate a magnetic field. The specimen cuts the magnetic lines to generate an induced current. The specimen in the induction coil will generate a closed loop and then form an eddy current, which quickly heats the surface of the specimen, causing the pre-placed coating on the substrate to melt, thereby achieving metallurgical bonding with the substrate surface, obtaining a coating with good performance, and improving the performance of the substrate. The most common molding problem of induction cladding is that the cladding layer is not fully melted, and defects such as "cooked", impurities, and pores appear. This is because the induction cladding process is a heat transfer process, transferring heat from the critical surface of the coating and the substrate to the middle and upper parts of the coating to melt the coating powder. There is a temperature gradient and insufficient heat transfer, which will cause defects. For example, in his master's thesis in 2018, Du Shengen from Qingdao University of Technology analyzed the repair and improvement of the cladding layer by applying mechanical vibration during the induction cladding process, and studied the effects of different vibration parameters on the microstructure, element distribution, hardness, wear resistance and corrosion resistance of the cladding layer. However, after research, it was found that the vibration direction has a great influence on the macroscopic morphology and internal organization of the cladding layer. When the vibration direction is parallel vibration, the improvement effect on the macroscopic cracks of the cladding layer is small, and the microstructure distribution in the cladding layer is uneven, the dendrites are relatively coarse, and the grain refinement effect is not achieved. In addition, the vibration amplitude will also greatly affect the cladding effect. It can be seen that mechanical vibration is not a very effective solution to improve the cladding effect of the cladding layer. There are too many variable factors, which leads to unsatisfactory cladding effect.

[0003] The rolling composite method is a composite method in which two or more metal plates with different physical and chemical properties that have undergone surface pretreatment are formed into blanks or stacked, and the metal surfaces are brought into contact with each other under the action of rolling force. Through previous heating and plastic deformation, the atoms of the plates diffuse on the contact surface to achieve a firm bond. Traditional rolling mill roll spacing adjustment uses a hydraulic system or manual adjustment, which is not only expensive but also cumbersome to operate. For example, the invention patent for a hot rolling mill roll spacing adjustment device applied by Zheng Fulin on September 14, 2021 uses a motor to drive a hydraulic system transmission box through a reducer to adjust the spacing between the rollers, but its implementation is extremely difficult and costly. Summary of the invention

[0004] To solve the above problems, the present invention designs a repair and strengthening processing device based on the concept of green manufacturing, high efficiency and low consumption, low carbon and environmentally friendly processing, which provides an effective way to solve the problem of plate defect repair and improve the surface performance of the plate.

[0005] The present invention provides the following technical solutions.

[0006] An electromagnetic induction cladding rolling plate repair and strengthening device, comprising:

[0007] front workbench with rollers built into the top;

[0008] The lifting assembly is installed above the front workbench to drive a heating coil plate to rise and fall;

[0009] The rolling mill support is arranged on one side of the front workbench, and two side plates are fixed on the top of both sides respectively; the side plates are provided with two long grooves;

[0010] A lower roller, both ends of which are rotatably connected to the two side plates;

[0011] The driving assembly is mounted on the rolling mill support and drives the lower roller to rotate;

[0012] Two shaft seats are respectively slidably arranged in the two long grooves, and are respectively driven by an electric cylinder to slide in the two long grooves;

[0013] An upper roller is rotatably arranged between the two shaft seats;

[0014] The plate is placed above the roller to be coated with a cladding layer, and is then transported by the roller to between the upper roller and the lower roller for rolling.

[0015] Preferably, the lifting assembly comprises:

[0016] Suspension, mounted above the front workbench;

[0017] Upgraded fixing plate, fixed in the middle of the top of the suspension, with a lead screw nut;

[0018] Four groups of lifting guide pillars respectively pass through the upgrade fixing plate and slide with the upgrade fixing plate; the top of the heating coil plate is fixedly connected to the lower ends of the four groups of lifting guide pillars;

[0019] The lifting carrier plate has four bottom corners fixedly connected to the upper ends of four sets of lifting guide pillars;

[0020] A servo motor 1 is fixedly arranged on the top of the lifting plate;

[0021] One end of the lead screw is connected to the output shaft of the servo motor through a coupling, and the other end passes through the lead screw nut and is rotatably connected to the heating coil plate; the lead screw and the lead screw nut are threadedly matched.

[0022] Preferably, current input terminals and current output terminals are provided on both sides of the heating coil plate, and the heating coils of the heating coil plate are energized by a high-frequency induction heater.

[0023] Preferably, the four groups of lifting guide columns are respectively matched through four linear bearings and an upgraded fixing plate.

[0024] Preferably, the drive assembly comprises:

[0025] The second servo motor is fixedly mounted below the rolling support, and a small pulley is fixedly arranged on its output shaft;

[0026] A driving gear is rotatably arranged at one end of the rolling support, a large pulley is fixedly arranged on its tooth surface, and the large pulley and the small pulley are connected through a belt drive;

[0027] The passive gears are respectively rotatably connected to the outer side of one of the side plates and meshed with the active gears; the two ends of the lower roller are respectively fixedly connected to the two passive gears.

[0028] Preferably, the two electric cylinders are respectively mounted on the top of the two side plates, and the telescopic ends thereof pass through the two side plates respectively and are fixedly connected to the tops of the two axle seats respectively.

[0029] Preferably, it also includes:

[0030] The rear workbench is set up on one side of the rolling support to receive the rolled plates.

[0031] Beneficial effects of the present invention:

[0032] 1. In the prior art, there is no process that combines induction cladding and secondary strengthening. The present invention combines induction cladding with rolling strengthening, which can effectively improve the defects such as pores and bubbles on the surface of the specimen after induction cladding, and improve the interface bonding. After induction cladding, the sample is cooled to a certain temperature, and then secondary rolling strengthening is performed on the surface of the sample to improve the surface hardness, residual stress and fatigue life of the specimen. The repair and strengthening processing device of the present invention, which is based on the concept of green manufacturing, high efficiency and low consumption, and low-carbon and environmentally friendly processing, provides an effective way to solve the problem of plate defect repair and improve the surface performance of the plate.

[0033] 2. In the prior art, in order to solve the problems of incomplete melting of the cladding layer, temperature gradient, insufficient heat, etc. during the induction cladding process, the present invention adopts a sensor that can automatically move up and down to adjust the distance between the sensor and the plate, which effectively improves the problems of incomplete melting of the cladding layer, temperature gradient, insufficient heat, etc.

[0034] 3. In the prior art, the spacing between the rollers of the traditional rolling mill is adjusted by hydraulic system or manual adjustment, which is not only expensive but also cumbersome to operate. The present invention uses dual electric cylinders to drive the rollers to achieve automatic and precise adjustment of the spacing between the rollers, which is not only inexpensive but also eliminates cumbersome operating steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a three-dimensional diagram of the overall structure of the electromagnetic induction cladding rolling plate repair and strengthening device according to an embodiment of the present invention;

[0036] Figure 2 is a side view of the electromagnetic induction cladding rolled plate repair and strengthening device according to an embodiment of the present invention;

[0037] Figure 3 2. It is a front view of the electromagnetic induction cladding rolled plate repair and strengthening device according to an embodiment of the present invention;

[0038] Figure 4 It is a top view of the electromagnetic induction cladding rolled plate repair and strengthening device according to an embodiment of the present invention.

[0039] In the figure: 1-1, front workbench; 1-2, rear workbench; 2, suspension; 3-1, current input terminal; 3-2, lead screw; 3-3, coupling; 3-4, servo motor one; 3-5, upgrade fixing plate; 3-6, current output terminal; 3-7, lead screw nut; 3-8, lifting carrier plate; 3-9, linear bearing; 3-10, heating coil plate; 3-11, lifting guide column; 4-1, shaft seat; 4-2, large pulley; 4-3, belt; 4-4, small pulley; 4-5, servo motor two; 4-6, passive gear; 4-7, driving gear; 4-8, electric cylinder; 4-9, lower roller; 4-10, upper roller; 5, roller; 6, plate. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0041] Example 1

[0042] An electromagnetic induction cladding rolling plate repair and strengthening device, the device part is as follows Figures 1 to 4As shown, the device can be divided into two parts, namely the induction cladding part and the rolling part. The induction cladding device is inside the suspension 2, 1-1 is the front workbench, with a roller 5 embedded in it, a plate 6 is placed above the roller 5, and a heating coil plate 3-10 is directly above the plate 6. Current input terminals 3-1 and current output terminals 3-6 are provided on both sides of the plate to facilitate the high-frequency induction heater to energize the heating coil. A servo motor 3-4 is installed on a lifting carrier plate 3-8, and lifting guide columns 3-11 are welded to the four corners of the lifting carrier plate 3-8. The lifting guide columns 3-11 are coordinated with four linear bearings 3-9 and an upgraded fixed plate 3-5 to facilitate the up and down movement of the lifting guide columns. The upgraded fixed plate 3-5 is welded on the bracket 2, and the end of the lifting guide column 3-11 is connected to the heating coil plate 3-10 through a linear bearing 3-9. The servo motor 3-4 is connected to the lead screw 3-2 through a coupling 3-3, and the lead screw 3-2 and the lead screw nut 3-7 cooperate to control the up and down movement of the heating coil plate 3-10, thereby controlling the heating effect.

[0043] On the right side of the support 2 is a rolling device, which contains two rollers, namely an upper roller 4-10 and a lower roller 4-9. In this device, the distance between the upper and lower rollers is adjusted by an electric cylinder 4-8. The lower roller 4-9 is an active roller, that is, it is driven by a servo motor 4-5. The servo motor 4-5 drives the lower roller to rotate actively through a small pulley 4-4, a belt 4-3, a large pulley 4-2 and a pair of gears: an active gear 4-7 and a passive gear 4-6. The upper roller is supported by a pair of shaft seats 4-1 by a double electric cylinder 4-8. When the plate 6 is pushed over, the upper roller 4-10 rotates passively. When the rolling is completed, the plate is transported to the rear workbench 1-2. The above two devices are combined to form a complete set of devices of the present invention.

[0044] In this embodiment, when used:

[0045] First, the induction cladding operation is carried out. The surface of the plate 6 is manually coated with a cladding layer and placed above the roller 5 for easy transportation to the rolling mill. It is necessary to ensure that the supporting surface of the plate and the upper vertex of the lower roller 4-9 of the rolling mill are in a straight line to ensure smooth rolling after cladding. Before starting the machine, the servo motor 3-4 is used to drive the screw 3-2 to adjust the distance between the heating coil plate 3-10 and the plate 6, and the copper coil required for induction cladding is controlled to move up and down to control the heating temperature. The double electric cylinder 4-8 is used to adjust the distance between the axes of the two working rollers to ensure a reasonable roll gap opening and set an appropriate amount of reduction. First, the servo motor 1 drives the lead screw nut. After adjusting the spacing between the coil and the plate and the roller gap opening, the high-frequency induction heater is turned on. The high-frequency current is input into the heater through the current input terminal 3-1. After the steel plate and the cladding layer are heated to the required temperature, the high-frequency induction heating equipment is turned off, and the steel plate is sent to the rolling mill for rolling. The servo motor 2 4-5 drives the belt 4-3 to drive the active gear 4-7 to transfer force to the passive gear 4-6 to move, and then drives the lower roller 4-9 to actively move to transmit the pushed plate. At the same time, the upper roller moves passively to exert pressure on the cladding layer. The pre-adjusted spacing between the two rollers of the rolling mill is used to roll the steel plate cladding layer to achieve the effect of strengthening the cladding layer.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electromagnetic induction cladding rolling plate repair and strengthening device, characterized in that: include: A front workbench (1-1) with a roller (5) embedded in the top; A lifting component is mounted above the front workbench (1-1) and drives a heating coil plate (3-10) to move up and down; The rolling mill support is arranged on one side of the front workbench (1-1), and two side plates are respectively fixed on the top of both sides; the side plates are provided with two long grooves; The lower roller (4-9) has two ends rotatably connected to the two side plates respectively; A driving assembly is mounted on the rolling mill support to drive the lower rollers (4-9) to rotate; Two shaft seats (4-1) are respectively slidably arranged in the two long grooves and are respectively driven by an electric cylinder (4-8) to slide in the two long grooves; An upper roller (4-10) is rotatably arranged between the two shaft seats (4-1); The plate (6) is placed above the roller (5) to be coated with a cladding layer, and is transported by the roller (5) to be rolled between an upper roller (4-10) and a lower roller (4-9); The lifting assembly comprises: A suspension frame (2) is mounted above the front workbench (1-1); An upgraded fixing plate (3-5) is fixedly arranged in the middle of the top of the suspension (2) and is provided with a lead screw nut (3-7); Four groups of lifting guide pillars (3-11) respectively pass through the upgrading fixing plate (3-5) and are slidably matched with the upgrading fixing plate (3-5); the top of the heating coil plate (3-10) is fixedly connected to the lower ends of the four groups of lifting guide pillars (3-11); The four corners of the bottom of the lifting carrier plate (3-8) are fixedly connected to the upper ends of four groups of lifting guide pillars (3-11); A servo motor (3-4) is fixedly arranged on the top of the lifting carrier plate (3-8); One end of the lead screw (3-2) is drivingly connected to the output shaft of the servo motor (3-4) through a coupling (3-3), and the other end passes through the lead screw nut (3-7) and is rotationally connected to the heating coil plate (3-10); the lead screw (3-2) and the lead screw nut (3-7) are threadedly matched.

2. The electromagnetic induction cladding rolling plate repair and strengthening device according to claim 1 is characterized in that: A current input terminal (3-1) and a current output terminal (3-6) are provided on both sides of the heating coil plate (3-10), and the heating coil of the heating coil plate (3-10) is energized by a high-frequency induction heater.

3. The electromagnetic induction cladding rolling plate repair and strengthening device according to claim 1 is characterized in that: The four groups of lifting guide columns (3-11) are matched with each other through four linear bearings (3-9) and an upgraded fixing plate (3-5).

4. The electromagnetic induction cladding rolling plate repair and strengthening device according to claim 1 is characterized in that: The drive assembly comprises: A servo motor 2 (4-5) is fixedly mounted below the rolling support, and a small pulley (4-4) is fixedly arranged on its output shaft; A driving gear (4-7) is rotatably arranged at one end of the rolling support, and a large pulley (4-2) is fixedly arranged on its tooth surface, and the large pulley (4-2) and the small pulley (4-4) are connected through a belt (4-3); The passive gears (4-6) are respectively rotatably connected to the outer side of one of the side plates and mesh with the active gear (4-7); the two ends of the lower roller (4-9) are respectively fixedly connected to the two passive gears (4-6).

5. The electromagnetic induction cladding rolling plate repair and strengthening device according to claim 1 is characterized in that: The two electric cylinders (4-8) are respectively mounted on the tops of the two side plates, and their telescopic ends respectively pass through the two side plates and are respectively fixedly connected to the tops of the two shaft seats (4-1).

6. The electromagnetic induction cladding rolling plate repair and strengthening device according to claim 1 is characterized in that: Also includes: The rear workbench (1-2) is erected on one side of the rolling support and receives the rolled plate (6).

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