Device and method for preventing steel from adhering to surface of steel rail roller

Abstract

The invention relates to a device and method for preventing steel from adhering to the surface of a steel rail roller and belongs to the technical field of steel rail rolling in the metallurgical industry. According to the technical scheme, a guide plate (1) and a scraping plate (2) are fixed to a rolling mill cross beam (5) through bolts (3) and gaskets (4), one side of the scraping plate (2) makes contact with a roller hole pattern, an inclined face (6) is arranged on one side of the guide plate (1), and the inclination of the inclined face (6) in the vertical direction is consistent with the inclination of the roller rail leg hole pattern; the guide plate (1) is provided with a rectangular clamping groove (7) matched with a rolling mill cross beam (5) and a threaded hole (8) matched with the bolt (3), and the scraper (2) is provided with a rectangular hole (9) matched with the bolt (3). The device has the beneficial effects that a rolled piece can be helped to be twisted right through the guide plate in the biting stage of the rolled piece, the direct impact of the rolled piece on the roller is relieved, and in the next rotation period after steel bonding happens to the roller, bonded steel on the surface of the roller is removed through the scraper.

Description

Technical Field

[0001] The invention relates to a device and a method for preventing steel from sticking to the surface of a rail roller, and belongs to the technical field of rail rolling in the metallurgical industry. Background Art

[0002] In rail production, the rough rolling stage is generally carried out using a two-roller reversing rolling mill, and the blank is rolled into a rail prototype through a number of rail-shaped holes. Figure 1 As shown in the figure, the rail is rolled horizontally. Due to the shape characteristics of the rail-shaped workpiece, when it is laid flat on the roller surface, the bottom surface of the rail is not perpendicular to the roller surface, but at a certain inclination angle A. When the workpiece bites into the hole, the upper leg tip of the rail bottom first contacts the waist of the upper roller. Under the combined force of the upper roller surface and the side guide plate, the workpiece is gradually twisted to 90° and finally bites in. This results in a violent impact contact between the upper roller surface and the upper leg tip of the workpiece during the twisting stage of the workpiece, which can easily cause the upper roller surface to stick to the steel, and finally press into the surface of the workpiece to form rolling scar defects and waste products, causing serious economic losses. Summary of the invention

[0003] The purpose of the present invention is to provide a device and method for preventing steel from sticking to the surface of rail rollers, which can assist the workpiece to be twisted by a guide plate during the workpiece biting stage, reduce the direct impact of the workpiece on the roller, and remove the steel stuck to the roller surface by a scraper during the next rotation cycle after the roller sticks to the steel, thereby solving the problems existing in the background technology.

[0004] The technical solution of the present invention is: A device for preventing steel from sticking to the surface of a rail roller comprises a guide plate, a scraper, bolts and a gasket. The guide plate and the scraper are fixed to a rolling mill crossbeam by means of the bolts and the gasket. One side of the scraper is in contact with the roller pass profile. One side of the guide plate is provided with an inclined surface, the inclination of the inclined surface in the vertical direction is consistent with the inclination of the roller rail leg pass profile.

[0005] The guide plate is provided with a rectangular slot matched with the rolling mill beam and a threaded hole matched with the bolt, and the scraper is provided with a rectangular hole matched with the bolt.

[0006] The bolts pass through the rectangular holes and gaskets on the scraper in sequence and are screwed into the threaded holes on the guide plate to fasten the guide plate and the scraper to the rolling mill beam.

[0007] The scraper is a long strip, one end of the scraper is a working end, and the other end of the scraper is a fixed end. The shape of the working end of the scraper matches the hole shape of the roller, and a rectangular hole is arranged at the fixed end of the scraper.

[0008] The horizontal extension direction of the inclined surface is arranged at a certain angle to the rolling direction.

[0009] A method for preventing steel from sticking to the surface of a rail roller, using a device for preventing steel from sticking to the surface of a rail roller as defined above. When a workpiece is bitten into the roller, the tip of the leg of the workpiece first contacts the inclined surface of a guide plate, and the workpiece is gradually twisted with the assistance of the inclined surface of the guide plate to achieve smooth biting of the workpiece. At the same time, in the next rotation cycle after the roller sticks to the steel, the steel stuck to the surface of the roller is removed by a scraper.

[0010] The beneficial effects of the present invention are as follows: when the workpiece bites into the rolling mill, as the workpiece moves toward the rolling roller, the workpiece is guided with the assistance of the inclined surface of the guide plate, and the workpiece is gradually twisted to achieve a relatively stable bite of the workpiece, thereby reducing the steel sticking caused by the direct impact of the leg tip and the rolling roller; at the same time, in conjunction with the hole-type scraper, the steel sticking on the surface of the rolling roller can be cleaned off in time, thereby reducing the scrap of rail surface defects caused by the steel sticking to the rolling roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the biting and twisting process of the rolled piece under the background technology; Figure 2 It is a schematic diagram of the structure of the present invention; Figure 3 It is the front view of the present invention; Figure 4 This is the main view of the guide plate; Figure 5 It is the left view of the guide plate; Figure 6 is a top view of the guide plate; Figure 7 It is a schematic diagram of the scraper; Figure 8 is a schematic diagram of the gasket; Fig. 9 This is a schematic diagram of the biting and twisting process of the rolled piece according to the present invention; In the figure: 1-guide plate, 2-scraper, 3-bolt, 4-gasket, 5-rolling mill beam, 6-inclined surface, 7-rectangular slot, 8-threaded hole, 9-rectangular hole, 10-scraper working end, 11-circular hole. DETAILED DESCRIPTION

[0012] The present invention will be further described below by way of examples with reference to the accompanying drawings.

[0013] Refer to the attached Figure 2-9 A device for preventing steel from sticking to the surface of a rail roller comprises a guide plate 1, a scraper 2, bolts 3 and a gasket 4. The guide plate 1 and the scraper 2 are fixed to a rolling mill crossbeam 5 by means of the bolts 3 and the gasket 4. One side of the scraper 2 is in contact with the roller pass profile. An inclined surface 6 is provided on one side of the guide plate 1. The inclination of the inclined surface 6 in the vertical direction is consistent with the inclination of the roller rail leg pass profile.

[0014] In this embodiment, refer to the attached Figure 2-9It is shown that the device is composed of a guide plate 1, a scraper 2, a gasket 3 and a fixing bolt 4. The upper part of the guide plate 1 has a rectangular slot 7 and two sets of threaded holes 8. The width of the rectangular slot 7 matches the width of the rolling mill beam 5, so that the rolling mill beam 5 is embedded in the rectangular slot 7 and fixed by bolts 8. There is an inclined surface 6 on one side of the guide plate 1. The inclination of the inclined surface 6 in the vertical direction is consistent with the inclination of the pass of the rail leg of the rolled piece. The horizontal extension direction of the inclined surface 6 has a certain angle with the rolling direction, and is in a semi-flare shape.

[0015] Figure 7 It is shown that the scraper 2 is a long strip, one end of which is a working end 10 and the other end is a fixed end. The shape of the working end 10 is complementary to the shape of the part of the roller hole profile that needs to be scraped. The fixed end has two groups of rectangular holes 9, which can adjust the front and rear position of the scraper 2.

[0016] Figure 8 As shown, the gasket 4 is rectangular, and each of the four corners has a circular hole 11, and the position of the circular hole 11 corresponds to the position of the bolt 3.

[0017] Figure 2 , 3 7 shows that the bolt 3 passes through the scraper 2 and the gasket 3 in sequence and is screwed into the threaded hole 8 on the guide plate 1 to fasten the entire device to the rolling mill beam 5.

[0018] When the roller diameter changes, the thickness of the gasket 3 can be adjusted so that the scraper 2 always points to the center of the roller, and the front and rear positions of the scraper 2 can be adjusted so that the working end 10 of the scraper always fits the roller surface.

[0019] Fig. 9 It is shown that when the workpiece bites, as the workpiece moves toward the roller, the tip of the leg of the workpiece first contacts the front end of the inclined surface 6 of the guide plate 1, and is gradually twisted to 90° under the joint action of the inclined surface 6 of the guide plate 1 and the side guide plate, so that the workpiece bites more smoothly. At the same time, in the next rotation cycle after the roller is stuck with steel, the scraper 2 removes the steel stuck on the roller surface.

Claims

1. A device for preventing steel from sticking to the surface of a rail roller, characterized in that: The invention comprises a guide plate (1), a scraper (2), bolts (3) and a gasket (4); the guide plate (1) and the scraper (2) are fixed to a rolling mill crossbeam (5) by means of the bolts (3) and the gasket (4); one side of the scraper (2) is in contact with the roller pass profile; one side of the guide plate (1) is provided with an inclined surface (6); the inclination of the inclined surface (6) in the vertical direction is consistent with the inclination of the roller rail leg pass profile.

2. The device for preventing steel from sticking to the surface of rail rollers according to claim 1, characterized in that: The guide plate (1) is provided with a rectangular slot (7) matching with the rolling mill beam (5) and a threaded hole (8) matching with the bolt (3), and the scraper (2) is provided with a rectangular hole (9) matching with the bolt (3).

3. The device for preventing steel from sticking to the surface of rail rollers according to claim 2, characterized in that: The bolts (3) are passed through the rectangular holes (9) on the scraper (3) and the gasket (3) in sequence and screwed into the threaded holes (8) on the guide plate (1), thereby fastening the guide plate (1) and the scraper (2) to the rolling mill crossbeam (5).

4. The device for preventing steel from sticking to the surface of rail rollers according to claim 3, characterized in that: The scraper (2) is a long strip, one end of the scraper (2) is a working end (10), and the other end of the scraper (2) is a fixed end. The shape of the working end (10) of the scraper (2) matches the hole shape of the roller, and the rectangular hole (9) is arranged at the fixed end of the scraper (2).

5. The device for preventing steel from sticking to the surface of rail rollers according to claim 1, characterized in that: The horizontal extension direction of the inclined surface (6) is arranged at a certain angle to the rolling direction.

6. A method for preventing steel from sticking to the surface of a rail roller, characterized in that: A device for preventing steel from sticking to the surface of a rail roller as defined in claims 1 to 5 is used. When the workpiece bites into the roller, the tip of the leg of the workpiece first contacts the inclined surface (6) of the guide plate (1), and the workpiece is gradually twisted with the assistance of the inclined surface (6) of the guide plate (1) to achieve smooth bite of the workpiece. At the same time, in the next rotation cycle after the roller sticks to the steel, the scraper (2) removes the steel stuck to the roller surface.

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