Brake disc continuous annealing device

Abstract

The utility model discloses a brake disc continuous annealing device, including continuous annealing furnace and the drum conveyer that runs through continuous annealing furnace, and the both ends of continuous annealing furnace are connected with heat -insulating furnace, and the drum conveyer also runs through heat -insulating furnace, and the position of corresponding passway of both ends of continuous annealing furnace is vertically provided with inner furnace door, and is fixed with rotary joint seat on the inner furnace door, and the top of heat -insulating furnace is fixed with linear stepper motor, and the screw rod of linear stepper motor is connected with rotary joint seat. The utility model discloses through setting heat -insulating furnace at both ends of continuous annealing furnace, when the drum conveyer input and output brake disc, the outer furnace door is not opened simultaneously with the inner furnace door, and the high temperature heat energy in the continuous annealing furnace is more easily intercepted and remains by heat -insulating furnace, and the heat energy that escapes to the workshop is less, reduces energy waste, improves workshop working environment, and the both ends of continuous annealing furnace are heat -insulated, and the influence of continuous annealing furnace temperature reduction on temperature control is also reduced.

Description

Technical Field

[0001] This utility model relates to the field of annealing equipment technology, specifically a continuous annealing device for brake discs. Background Technology

[0002] During use, automotive brake discs can experience vibrations and reduced smoothness during braking due to uneven material composition, poor manufacturing precision, thermal deformation, and rust. This noise is particularly noticeable in electric vehicles, which lack engine and transmission noise sources. Exposed to the air, brake discs are easily exposed to water during driving and car washes. Brake discs without rust-proofing are prone to corrosion. Braking heats the disc, causing thermal changes in the rust layer. Iron oxide reacts to form magnetite (Fe3O4), which adheres to the brake disc and is difficult to remove, resulting in uneven disc thickness and contributing to braking vibrations and noise.

[0003] Therefore, in the brake disc manufacturing process, in addition to ensuring material uniformity and improving processing precision, it is also necessary to prevent rusting during use. After nitriding and continuous annealing, a compound layer can be formed on the surface of the brake disc. This compound layer has a layered, close-packed hexagonal structure similar to graphite, exhibiting excellent wear resistance. Furthermore, due to the stable high pitting potential of the compound layer, it also has good corrosion resistance, thereby improving the rusting problem of the brake disc.

[0004] When annealing brake discs in a continuous annealing furnace, the brake discs are loaded in a basket and fed into the furnace via a roller conveyor. Outside the furnace, the brake discs are heated to a certain temperature and held for a period of time. Then, they are output by the roller conveyor for slow cooling. Annealing can eliminate internal stress in the brake discs, refine grains, improve microstructure and properties, and complete carbonitriding treatment.

[0005] The existing continuous annealing furnace has channels at both ends, with a roller conveyor running horizontally through the furnace. The brake disc is input from one end and output from the other. Because the internal temperature of the continuous annealing furnace is high during heating and heat preservation, when the furnace door is opened to allow the brake disc to input and output, the high-temperature heat energy inside can easily escape to the outside. This not only causes the workshop temperature to rise, but also lowers the internal temperature of the continuous annealing furnace, affecting normal temperature control, and also causes energy waste. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a continuous annealing device for brake discs, which solves the problem that high-temperature heat energy inside the brake disc can easily dissipate when the furnace door of the existing continuous annealing furnace is opened to allow the brake disc to input and output.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A continuous annealing device for brake discs includes a continuous annealing furnace and a roller conveyor that passes through the continuous annealing furnace. Both ends of the continuous annealing furnace are connected to a heat-insulating furnace, and the roller conveyor also passes through the heat-insulating furnace. Inner furnace doors are vertically installed at the corresponding passage positions at both ends of the continuous annealing furnace. Rotary connecting seats are fixed on the inner furnace doors. A linear stepper motor is fixed on the top of the heat-insulating furnace, and the lead screw of the linear stepper motor is connected to the rotary connecting seat. An outer furnace door is vertically installed on the side of the heat-insulating furnace at the position corresponding to the passage. An electric push rod is fixed on the side of the heat-insulating furnace above the outer furnace door, and the lower end of the piston rod of the electric push rod is connected to the outer furnace door.

[0008] Preferably, the inner wall of the heat-insulating furnace is fixed with an insulation board.

[0009] Preferably, the lower edges of both the inner and outer furnace doors are provided with clearance grooves corresponding to the frame positions of the roller conveyor.

[0010] Preferably, multiple guide positioning wheels are installed on the end face of the continuous annealing furnace and the side of the heat insulation furnace. The multiple guide positioning wheels are equidistantly arranged in the vertical direction and are symmetrically and movablely engaged with the front and back of the outer furnace door and the inner furnace door, respectively.

[0011] Preferably, the guide positioning wheel is a T-shaped wheel adapted to the thickness dimensions of the outer furnace door and the inner furnace door.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This invention features heat-insulating furnaces at both ends of a continuous annealing furnace, with inner furnace doors at both ends and an outer furnace door on the side of the heat-insulating furnace. When the roller conveyor inputs and outputs the brake discs, the outer furnace door and the inner furnace door do not open simultaneously. This allows the high-temperature heat energy inside the continuous annealing furnace to be more easily intercepted and retained by the heat-insulating furnace, resulting in less heat energy escaping into the workshop, reducing energy waste, improving the workshop working environment, and providing insulation at both ends of the continuous annealing furnace, thus reducing the impact of temperature drop on temperature control. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front view of the heat insulation furnace of this utility model; Figure 3 These are the front and side views of the heat-insulating furnace of this utility model. Figure 4 This is a side view of the internal structure of the heat-insulating furnace of this utility model.

[0014] In the diagram: 1. Continuous annealing furnace; 2. Roller conveyor; 3. Insulated furnace; 4. Inner furnace door; 5. Rotary connecting seat; 6. Linear stepper motor; 7. Outer furnace door; 8. Electric push rod; 9. Insulation board; 10. Clearance groove; 11. Guide positioning wheel. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1-4 As shown, this utility model provides a technical solution: a continuous annealing device for brake discs, including a continuous annealing furnace 1 and a roller conveyor 2 that passes through the continuous annealing furnace 1. Both ends of the continuous annealing furnace 1 are connected to a heat insulation furnace 3. The inner wall of the heat insulation furnace 3 is fixed with a heat insulation board 9. The roller conveyor 2 also passes through the heat insulation furnace 3. An inner furnace door 4 is vertically installed at the positions of the corresponding channels at both ends of the continuous annealing furnace 1. A rotary connecting seat 5 is fixed on the inner furnace door 4. A linear stepper motor 6 is fixed on the top of the heat insulation furnace 3. The lead screw of the linear stepper motor 6 is connected to the rotary connecting seat 5. An outer furnace door 7 is vertically installed on the side of the heat insulation furnace 3 at the position corresponding to the passage. The inner furnace door 4 and the lower edge of the outer furnace door 7 are provided with clearance grooves 10 at the positions corresponding to the frame of the roller conveyor 2. An electric push rod 8 is fixed on the side of the heat insulation furnace 3 above the outer furnace door 7. The lower end of the piston rod of the electric push rod 8 is connected to the outer furnace door 7. Multiple guide positioning wheels 11 are installed on the end face of the continuous annealing furnace 1 and the side of the heat insulation furnace 3. The guide positioning wheels 11 are T-shaped rotating wheels that are adapted to the thickness of the outer furnace door 7 and the inner furnace door 4. The multiple guide positioning wheels 11 are equidistantly arranged in the vertical direction and are symmetrically and movablely engaged with the front and back of the outer furnace door 7 and the inner furnace door 4 respectively.

[0017] Working principle: During the annealing heating and heat preservation process in the continuous annealing furnace 1, both the inner furnace door 4 and the outer furnace door 7 are closed. When it is necessary to input and output the brake disc, the brake disc is loaded from the left end of the roller conveyor 2 through a basket. The left electric push rod 8 drives the outer furnace door 7 to move upward and open. After the brake disc enters the left heat insulation furnace 3, the left electric push rod 8 drives the outer furnace door 7 to move downward and close. The left linear stepper motor 6 drives the inner furnace door 4 to move upward and open. The brake disc enters the continuous annealing furnace 1. The left linear stepper motor 6 then drives the inner furnace door 4 to move downward and close. The brake disc is loaded in a basket and output from the right end of the roller conveyor 2. The right linear stepper motor 6 drives the inner furnace door 4 to move upward and open, and the brake disc enters the right heat insulation furnace 3. The right linear stepper motor 6 then drives the inner furnace door 4 to move downward and close. The right electric push rod 8 drives the outer furnace door 7 to move upward and open, and the brake disc is output from the right heat insulation furnace 3. The right electric push rod 8 drives the outer furnace door 7 to move downward and close. The outer furnace door 7 and the inner furnace door 4 do not open at the same time, so that the high temperature heat energy inside the continuous annealing furnace 1 is more easily intercepted and retained by the heat insulation furnace 3, reducing heat loss.

[0018] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A continuous annealing apparatus for brake discs, comprising a continuous annealing furnace (1) and a roller conveyor (2) passing through the continuous annealing furnace (1), characterized in that: Both ends of the continuous annealing furnace (1) are connected to heat insulation furnaces (3), and the roller conveyor (2) also passes through the heat insulation furnace (3). The continuous annealing furnace (1) has an inner furnace door (4) vertically installed at the corresponding channel positions at both ends. A rotating connecting seat (5) is fixed on the inner furnace door (4). A linear stepper motor (6) is fixed on the top of the heat insulation furnace (3). The lead screw of the linear stepper motor (6) is connected to the rotating connecting seat (5). An outer furnace door (7) is vertically installed on the side of the heat-insulating furnace (3) at the position corresponding to the passage. An electric push rod (8) is fixed on the side of the heat-insulating furnace (3) above the outer furnace door (7). The lower end of the piston rod of the electric push rod (8) is connected to the outer furnace door (7).

2. The brake disc continuous annealing apparatus according to claim 1, characterized in that: The inner wall of the heat-insulating furnace (3) is fixed with an insulation board (9).

3. The brake disc continuous annealing apparatus according to claim 1, characterized in that: The lower edges of the inner furnace door (4) and the outer furnace door (7) are provided with clearance grooves (10) corresponding to the frame positions of the roller conveyor (2).

4. The brake disc continuous annealing apparatus according to claim 1, characterized in that: Multiple guide positioning wheels (11) are installed on the end face of the continuous annealing furnace (1) and the side of the heat insulation furnace (3). The multiple guide positioning wheels (11) are equidistantly arranged in the vertical direction and are symmetrically and movablely engaged with the front and back of the outer furnace door (7) and the inner furnace door (4).

5. The brake disc continuous annealing apparatus according to claim 4, characterized in that: The guide positioning wheel (11) is a T-shaped wheel that is adapted to the thickness dimensions of the outer furnace door (7) and the inner furnace door (4).

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