Wear-resistant and high-temperature-resistant furnace entering sliding rail

Abstract

The utility model provides a wear-resistant and high-temperature-resistant furnace inlet sliding rail, which belongs to the field of heating furnace equipment and comprises a plurality of sliding rails, each sliding rail is provided with a plurality of sliding blocks, the plurality of sliding blocks are linearly arranged, the upper surfaces among the plurality of sliding blocks are inclined planes, namely, the height of the sliding block close to a feeding end is higher than that of the sliding block close to a discharging end, and the height of the sliding block close to the discharging end is higher than that of the sliding block close to the discharging end. Materials can naturally slide along with the inclined face when located on the upper surfaces of the multiple sliding blocks, the sliding rail is suitable for a pusher type heating furnace, the sliding blocks can be arranged on the sliding rail in an inclined mode, the materials slide into the furnace through the sliding blocks, abrasion to the sliding rail is reduced, and the service life of the sliding rail is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to heating furnace equipment field, concretely relates to a furnace sliding rail with wear resistance and high temperature resistance. BACKGROUND

[0002] In the steel production process, pusher type heating furnace undertakes the important task of heating billets to suitable temperature for subsequent processing.

[0003] In the prior art, sliding bars or sliding rails are mostly used as the connecting carrier of the roller way and the sliding block in the furnace, and the surface material performance of the sliding rails or sliding bars will gradually decrease due to long-term exposure to high temperature environment, which causes the surface roughness and shape to change, and the billets slide on the sliding rails during the process of entering the furnace, and the change of the surface state of the sliding rails directly leads to uneven friction force on the billets during the transition process, and the uneven friction force will cause the billets to jam or deviate during sliding.

[0004] The above-mentioned situation not only affects the connection of the sliding rail and the heating furnace furnace bar pipe sliding block, causes the billets to impact the furnace bar pipe sliding block, and further causes the furnace bar pipe to bend, leak and other malignant accidents, directly affects the normal operation of the heating furnace, but also greatly shortens the service life of the sliding rail, frequently replaces the sliding rail, increases the maintenance cost and maintenance workload, and also greatly increases the labor intensity of the workers. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a furnace sliding rail with wear resistance and high temperature resistance, which can reduce the wear of the sliding rail and increase the service life of the sliding rail by arranging sliding blocks on the sliding rail and inclining the sliding blocks.

[0006] To solve the above-mentioned technical problem, the utility model provides a furnace sliding rail with wear resistance and high temperature resistance, which comprises a plurality of sliding rails, the sliding rails are used to provide direction guidance when the material falls, and the material moves horizontally into the heating furnace, a plurality of sliding blocks are arranged on each sliding rail, the plurality of sliding blocks are arranged linearly, the sliding blocks are uniformly arranged on the sliding rails, the material moves on the sliding blocks, the friction contact between the material and the sliding rails is reduced, the service life of the sliding rails is increased, the upper surfaces between the plurality of sliding blocks are inclined surfaces, that is, the height of the sliding block close to the feeding end is higher than the height of the sliding block close to the discharging end, and the material can naturally slide along the inclined surface when the material is located on the upper surfaces of the plurality of sliding blocks, which facilitates the material to fall into the heating furnace and effectively avoids the material from falling off the sliding block when the material is placed on the upper surface of the sliding block at the feeding end.

[0007] A material pushing assembly is arranged at the position close to the feeding end of the sliding block, and a heating furnace is arranged at the position close to the discharging end of the sliding block, a furnace bar pipe is arranged in the heating furnace, and the discharging end of the sliding block abuts against the outer surface of the furnace bar pipe.

[0008] The upper surface of the slide rail and the upper surface of the slide block form an angle a, 0°> angle a> 90°, and the angle a is 2°. The angle of 2° enables the material to naturally slide to the discharge end along the inclined surface under the action of gravity when placed on the upper surface of the slide block, without the need for additional complex pushing devices, thereby simplifying the operation process of feeding the material into the furnace.

[0009] From the perspective of protecting the equipment, this natural sliding mode can reduce the friction between the material and the slide block and the slide rail, reduce wear caused by friction, and prolong the service life of the slide block and the slide rail.

[0010] The stable sliding process also reduces the occurrence of jamming and deviation of the material when entering the furnace, avoids the impact of the billet on the slide block of the furnace bar pipe, and effectively reduces the probability of occurrence of malignant accidents such as bending and water leakage of the furnace bar pipe, thereby ensuring the normal and stable operation of the heating furnace.

[0011] The slide block is a cuboid alloy of the same shape, and the slide block is made of Cr28Ni48 alloy material. Under the high-temperature baking of the heating furnace, the use of Cr28Ni48 alloy material for the slide block has better heat resistance and wear resistance than the existing slide rail. The Cr28Ni48 alloy material has high hardness and good wear resistance, which can effectively resist the friction loss caused by the sliding of the billet, greatly prolong the service life of the slide block, reduce the need for frequent replacement due to wear of the slide block, reduce maintenance costs and workload, improve production efficiency, and ensure that the slide block can maintain stable shape and structure under long-term high-temperature operation, thereby ensuring normal operation of the equipment.

[0012] Although the Cr28Ni48 alloy material has good high-temperature resistance, it will inevitably expand and contract under the continuous action of high temperature. If there is no expansion space between adjacent slide blocks, when the temperature rises, each slide block will be squeezed by the heat expansion, and an expansion groove will be formed between adjacent slide blocks. When the temperature rises, the slide block can freely stretch in the direction of the expansion groove, thereby avoiding mutual squeezing between the slide blocks, ensuring that the slide block always maintains a stable position and shape in a high-temperature environment, ensuring that the material can smoothly slide into the furnace along the inclined surface on the slide block, and maintaining the efficient operation of the heating furnace.

[0013] The slider is used to support the sliding of the billet. If the corner of the slider close to the feeding end keeps a right angle or a sharp shape, the corner of the billet is easy to collide and scratch the right angle corner of the slider when the billet is placed on the slider to start sliding. Especially in the process of high-speed and high-frequency material conveying, the collision and scratching will obviously hinder the sliding of the billet. The corner close to the feeding end of the slider is designed as a round corner, which can effectively avoid the above problems. The design of the round corner makes the billet more smooth when contacting the slider, reduces the resistance caused by the corner collision, and makes the billet more smoothly slide along the inclined surface of the slider, greatly improving the stability and efficiency of the sliding.

[0014] The wear-resistant slider is fixedly connected with the sliding rail through welding. The welding is a kind of permanent connection mode. Through the welding, the slider and the sliding rail are tightly combined at the atomic level, and form a firm integral structure. The connection mode has extremely high connection strength, and can ensure that the slider always maintains a stable relative position with the sliding rail when bearing the heavy pressure and sliding friction of the material, and the loosening or displacement does not occur.

[0015] The beneficial effects of the above technical scheme of the utility model are as follows:

[0016] 1. Reduce the wear degree of the sliding rail: the inclined slider is arranged on the sliding rail, the material slides on the slider instead of directly contacting the sliding rail, the friction mode of the material and the sliding rail is changed, and the wear of the material on the sliding rail is significantly reduced.

[0017] 2. Prolong the service life of the sliding rail: due to the reduced wear of the sliding rail, the performance reduction speed of the surface material of the sliding rail is slowed down, the shape and roughness change degree is reduced, and thus the service life of the sliding rail is effectively prolonged.

[0018] 3. Ensure the stable operation of the heating furnace: on the one hand, the jamming and deviation of the billet when entering the furnace are reduced, the billet is prevented from colliding with the furnace rib pipe slider, and accidents such as bending and water leakage of the furnace rib pipe are prevented; on the other hand, the reasonable design (such as the expansion groove, the round corner and the welding connection) of the slider ensures the stable operation of the equipment at high temperature, reduces the maintenance cost and workload, and reduces the labor intensity of workers. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a main body structure schematic view of the utility model of the furnace feeding sliding rail with wear resistance and high temperature resistance.

[0020] Figure 2 It is a left view structure schematic view of the utility model.

[0021] Figure 3 It is a right view structure schematic view of the utility model.

[0022] Figure 4 It is a main body structure schematic view of the utility model Figure 3A local structure schematic view at the middle A.

[0023] Reference numerals: 1, slide rail; 2, sliding block; 3, included angle a; 4, expansion groove; 5, round corner. DETAILED DESCRIPTION

[0024] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the following will combine the drawings of the embodiments of the utility model to make specific description. Figures 1-4 The technical scheme of the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by the person skilled in the art belong to the scope of protection of the utility model.

[0025] As Figure 1 , 2 , 3, 4 show:

[0026] The embodiment provides a furnace entry slide rail with wear resistance and high temperature resistance, and the main function of the slide rail 1 is to provide accurate direction guidance for the material when falling, and to ensure that the material can move horizontally into the heating furnace. A plurality of sliding blocks 2 are installed on each slide rail 1, and the sliding blocks 2 are linearly and uniformly arranged on the slide rail 1. The uniform arrangement can effectively reduce the frictional contact between the material and the slide rail 1 when the material moves on the sliding block 2, thereby prolonging the service life of the slide rail 1.

[0027] As Figure 1 , 4 show: the upper surfaces between the plurality of sliding blocks 2 are provided as inclined surfaces, that is, the height of the sliding block 2 close to the feeding end is higher than the height of the sliding block 2 close to the discharging end. When the material is placed on the upper surfaces of the plurality of sliding blocks 2, it can slide naturally with the help of the characteristics of the inclined surface. In this way, not only is it convenient for the material to fall into the heating furnace, but also the situation that the material accidentally falls off the sliding block 2 when the material is placed on the upper surface of the sliding block 2 close to the feeding end can be effectively avoided.

[0028] As Figure 3 , 4 show: a material pushing assembly is arranged at the position close to the feeding end of the sliding block 2, which is mainly responsible for pushing the material to the upper surface of the sliding block 2 and providing initial power for the sliding of the material. The heating furnace is placed at the position close to the discharging end of the sliding block 2, and the heating furnace is internally provided with a furnace coil pipe, and the discharging end of the sliding block 2 tightly abuts against the outer surface of the furnace coil pipe.

[0029] As Figure 4As shown in the drawings: the upper surface of the slide rail 1 and the upper surface of the slide block 2 form an angle a, the degree of the angle is 2°, between 0° and 90°, the 2° angle makes the material placed on the upper surface of the slide block 2 can naturally slide to the discharge end along the inclined surface under the action of gravity, without the need for additional complex pushing device, simplifying the operation process of the material into the furnace. From the perspective of equipment protection, this natural sliding mode can reduce the friction between the material and the slide block 2 and the slide rail 1, reduce the wear caused by friction, and prolong the service life of the slide block 2 and the slide rail 1. The stable sliding process also reduces the possibility of material jamming and deviation when entering the furnace, avoids the impact of the billet on the slide block 2 of the furnace bar pipe, and effectively reduces the probability of occurrence of serious accidents such as bending and water leakage of the furnace bar pipe, ensuring the normal and stable operation of the heating furnace.

[0030] As shown in the drawings: Figure 1 , 3 , 4: the slide block 2 adopts the same shape of cuboid alloy, and its model is Cr28Ni48 alloy material. Under the high-temperature baking of the heating furnace, the Cr28Ni48 alloy material has better heat resistance and wear resistance than the existing slide rail 1. It can effectively resist the friction loss caused by the sliding of the billet, greatly prolong the service life of the slide block 2, reduce the need for frequent replacement due to wear of the slide block 2, reduce maintenance costs and workload, improve production efficiency, and ensure that the slide block 2 can maintain stable shape and structure under long-time high-temperature operation, ensuring normal operation of the equipment.

[0031] As shown in the drawings: Figure 3 , 4 : the Cr28Ni48 alloy material will inevitably expand and contract under the action of high temperature. If there is no expansion space between adjacent slide blocks 2, when the temperature rises, each slide block 2 will be squeezed by each other due to thermal expansion. To solve this problem, expansion grooves 4 are provided between adjacent slide blocks 2, so that when the temperature rises, the slide block 2 can freely stretch in the direction of the expansion groove 4, thereby avoiding mutual squeezing between the slide blocks 2, ensuring that the slide block 2 always maintains a stable position and shape in a high-temperature environment, ensuring that the material can smoothly slide into the furnace along the inclined surface on the slide block 2, and maintaining the efficient operation of the heating furnace.

[0032] As shown in the drawings: Figure 1 , 2As shown in FIG. 3 and FIG. 4, the sliding block 2 is used to support the sliding of the billet. If the corner of the sliding block 2 close to the feeding end is kept in a right angle or sharp shape, the corner of the billet is easy to collide and scratch with the right angle corner of the sliding block 2 when the billet is placed on the sliding block 2 to start sliding. Especially in the process of high-speed and high-frequency material conveying, the collision and scratching will obviously hinder the sliding of the billet. The corner of the sliding block 2 close to the feeding end is designed as a round corner 5, which can effectively avoid the above problems. The design of the round corner 5 makes the billet more smooth when contacting the sliding block 2, reduces the resistance caused by the corner collision, and makes the billet more smoothly slide along the inclined surface of the sliding block 2, greatly improving the stability and efficiency of the sliding.

[0033] As shown in FIG. 5 and FIG. 6, the wear-resistant sliding block 2 is fixedly connected with the slide rail 1 by welding. The welding is a kind of permanent connection mode. Through the welding, the sliding block 2 and the slide rail 1 are tightly combined at the atomic level, forming a firm overall structure. Figure 1 2 At the same time, a detachable transition plate is added between the sliding block 2 and the slide rail 1 during the design. One end of the transition plate is connected with the slide rail 1 through bolts, and the other end is welded with the sliding block 2. In this way, when the sliding block 2 needs to be replaced, only the bolts need to be removed, and the transition plate and the sliding block 2 are taken off, so as to avoid damaging the slide rail 1.

[0034] Working principle: The furnace entry slide rail 1 is composed of a plurality of slide rails 1. A plurality of sliding blocks 2 are linearly arranged on each slide rail 1. The material is placed on the sliding block 2. The upper surface of the sliding block 2 is inclined. The height of the sliding block 2 close to the feeding end is higher than that of the sliding block 2 close to the discharging end. When the material is placed on the upper surface of the plurality of sliding blocks 2, it will naturally slide to the discharging end along the inclined surface under the action of gravity, and then slide into the furnace.

[0035] The upper surface of the slide rail 1 and the upper surface of the sliding block 2 form an included angle a. Taking an included angle of 2° as an example, this angle setting is beneficial to the smooth sliding of the material. The sliding block 2 is made of Cr28Ni48 alloy material, which has the characteristics of wear resistance and high temperature resistance. Expansion grooves 4 are provided between adjacent sliding blocks 2 to prevent the sliding blocks 2 from being pressed when they are expanded by heat, ensuring the stable operation of the equipment in a high temperature environment. The corner of the sliding block 2 close to the feeding end is designed as a round corner 5 to avoid blocking the sliding of the material. In addition, the wear-resistant sliding block 2 is fixedly connected with the slide rail 1 by welding to ensure the stability of the connection, the stability of the material sliding process, reduce the wear of the slide rail 1, and thus increase the service life of the slide rail 1.

[0036]

[0037] ​​In addition, it needs to be explained that, in the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles described in the present application, a number of improvements and refinements can be made, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A wear-resistant and high-temperature-resistant furnace entry slide rail comprising a plurality of slide rails (1), characterized in that: Each of the slide rails (1) is provided with a plurality of sliding blocks (2), the plurality of sliding blocks (2) are linearly arranged, and the upper surfaces between the plurality of sliding blocks (2) are inclined surfaces, that is, the height of the sliding block (2) near the feeding end is higher than the height of the sliding block (2) near the discharging end, and the material on the upper surfaces of the plurality of sliding blocks (2) can slide naturally along the inclined surface.

2. The wear-resistant and high-temperature-resistant charging slide rail according to claim 1, characterized in that: The upper surface of the slide rail (1) and the upper surface of the sliding block (2) form an included angle a (3), and 0°> included angle a (3)>90°.

3. The wear and high temperature resistant charging track according to claim 2, wherein: The included angle a (3) is 2°.

4. The wear and high temperature resistant charging track according to claim 3, characterized in that: The sliding block (2) is a cuboid alloy of the same shape, and the sliding block (2) is a Cr28Ni48 alloy material.

5. The wear and high temperature resistant charging track according to claim 4, wherein: Expansion grooves (4) are formed between adjacent sliding blocks (2), and the expansion grooves (4) are used to prevent the wear-resistant sliding blocks (2) from being extruded due to the expansion of the wear-resistant sliding blocks (2) caused by heat.

6. The wear and high temperature resistant charging track as claimed in claim 5, characterized in that: An angle of the sliding block (2) near the feeding end is provided with a round corner (5) to prevent blocking when the material slides.

7. The wear and high temperature resistant charging track as claimed in claim 6, characterized in that: The wear-resistant sliding block (2) is fixedly connected with the slide rail (1) by welding.

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