High-efficiency carbon ceramic brake disc vertical deposition furnace and heating method thereof

Abstract

The present application belongs to the technical field of carbon ceramic brake disc production, and particularly relates to a high-efficiency vertical deposition furnace for carbon ceramic brake disc and a heating method thereof, comprising a high-efficiency vertical deposition furnace for carbon ceramic brake disc, comprising: a water-cooled furnace shell, a water-cooled copper electrode, a graphite electrode, a material column, an electrode connecting plate and an intelligent power supply; one end of the water-cooled copper electrode extends into the water-cooled furnace shell through the bottom of the water-cooled furnace shell and a heat preservation layer; the graphite electrode is arranged inside the water-cooled furnace shell and is fixedly connected with the water-cooled copper electrode; the lower end of the material column is fixedly connected to the graphite electrode; the electrode connecting plate is a triangular carbon fiber plate; and the intelligent power supply is connected with the water-cooled copper electrode. Through cooperation of the intelligent power supply, the graphite electrode, the material column and the electrode connecting plate, the present application can make the brake disc preform actively generate heat in the deposition furnace and passively receive heat, has high thermal efficiency, and can make each brake disc preform uniformly receive heat, thereby improving production efficiency.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of carbon ceramic brake disc production, and particularly relates to a high-efficiency vertical deposition furnace for carbon ceramic brake disc and a heating method thereof. BACKGROUND

[0002] As an automobile brake part that has attracted much attention in recent years, the carbon ceramic brake disc has the characteristics of light weight, high temperature resistance and excellent wear resistance, etc. However, the preparation of the carbon ceramic brake disc is relatively complex, which needs to be prepared by cracking hydrocarbon gas at high temperature, so that the heating equipment and the heating process have high requirements.

[0003] At present, the existing equipment for preparing the carbon ceramic brake disc mainly includes an induction furnace and an electric resistance furnace. Although the two kinds of equipment can realize the preparation process, they have the problems of complex structure, high maintenance and cleaning cost, passive heating of the workpiece, low thermal efficiency, uneven temperature distribution and the like.

[0004] Therefore, it is necessary to study a high-efficiency vertical deposition furnace for carbon ceramic brake disc and a heating method thereof, which has a simple equipment structure, high thermal efficiency, can effectively improve the production efficiency of the carbon ceramic brake disc and reduce the production cost. SUMMARY

[0005] In view of the above problems in the prior art, the application provides a high-efficiency vertical deposition furnace for carbon ceramic brake disc and a heating method thereof, to solve the problems of low production efficiency of the carbon ceramic brake disc caused by the complex structure and low thermal efficiency of the prior art.

[0006] In order to solve the above technical problems, the application adopts the following technical solutions:

[0007] A high-efficiency vertical deposition furnace for carbon ceramic brake disc, comprising: a water-cooled furnace shell, a water-cooled copper electrode, a graphite electrode, a material column, an electrode connecting plate and an intelligent power supply.

[0008] The water-cooled furnace shell is further provided with a heat preservation layer and a gas outlet, the heat preservation layer is arranged on the inner wall of the water-cooled furnace shell, and the gas outlet is arranged at the top of the water-cooled furnace shell.

[0009] One end of the water-cooled copper electrode extends to the inside of the water-cooled furnace shell through the bottom of the water-cooled furnace shell and the heat preservation layer, and the water-cooled copper electrode is provided with an air inlet hole.

[0010] The graphite electrode is arranged in the inside of the water-cooled furnace shell, and the graphite electrode is fixedly connected with the water-cooled copper electrode.

[0011] The material column is a hollow pipe with an open lower end, the lower end of the material column is fixedly connected with the graphite electrode, and the air inlet hole is communicated with the material column.

[0012] The electrode connecting plate is a triangular carbon fiber plate, which comprises a fixed part and a connecting part, the fixed part is connected with the upper end of the column, and the connecting part is connected with the adjacent fixed part.

[0013] The intelligent power supply is connected with the water-cooled copper electrode.

[0014] Further, the water-cooled furnace shell is also provided with a water inlet, a water outlet and a cooling water tank, the cooling water tank is arranged on the water-cooled furnace shell, the water inlet is arranged at the lower end of the water-cooled furnace shell, and the water outlet is arranged at the upper end of the water-cooled furnace shell.

[0015] Further, the graphite electrode (3) is internally provided with a cavity, the cavity is communicated with the air inlet hole of the water-cooled copper electrode, and the cavity is communicated with the column.

[0016] Further, the column is made of carbon fiber, and the column is provided with a gas distribution port.

[0017] A heating method of a high-efficiency carbon ceramic brake disc vertical deposition furnace, the heating method comprises the following steps:

[0018] S1, install the brake disc preform, fix and install the brake disc preform on the column, and make the bottom brake disc preform contact with the graphite electrode;

[0019] S2, install the electrode connecting plate, install the electrode connecting plate on the column, and make the brake disc preform contact with the electrode connecting plate;

[0020] S3, heating, the intelligent power supply is powered on, and the brake disc preform and the column generate heat as the load of the power circuit;

[0021] S4, ventilation, the hydrocarbon gas enters the column through the channel formed by the air inlet hole and the cavity, and is sprayed onto the brake disc preform through the gas distribution port arranged on the column for deposition, and the graphite electrode preheats the hydrocarbon gas in the cavity when the hydrocarbon gas passes through the cavity, so that the hydrocarbon gas can quickly reach the reaction temperature.

[0022] S5, constant temperature deposition, as the density of the brake disc preform gradually increases, the resistance of the brake disc preform also changes, the intelligent power supply controls the current, and the temperature in the deposition furnace is maintained stable.

[0023] S6, cooling, when the intelligent power supply detects that the resistance changes to the preset value, the intelligent power supply is powered off, and the temperature in the deposition furnace gradually decreases.

[0024] Further, in S4, the hydrocarbon gas in the deposition furnace is a mixed gas of methane and propane.

[0025] Further, in S5, the temperature in the deposition furnace is 950-1200 DEG C.

[0026] Compared with the prior art, the present application has the following beneficial effects:

[0027] 1. The high-efficiency vertical deposition furnace for carbon ceramic brake disc can make the brake disc preform actively heat in the deposition furnace and passively heat, has high thermal efficiency, and can make each brake disc preform uniformly heat and improve production efficiency.

[0028] 2. The high-efficiency vertical deposition furnace for carbon ceramic brake disc can effectively improve production efficiency by preheating the carbon-hydrogen gas to the reaction temperature in the cavity of the graphite electrode before the carbon-hydrogen gas is sprayed onto the brake disc preform through the material column.

[0029] 3. The heating mode of the high-efficiency vertical deposition furnace for carbon ceramic brake disc is simple to operate and has few steps, which can effectively reduce production cost. DETAILED DESCRIPTION

[0030] Figure 1 is a structural schematic view of the present application;

[0031] Figure 2 is Figure 1 a sectional view at A-A in FIG. 1.

[0032] The reference signs involved in the drawings are as follows:

[0033] 1. water-cooled furnace shell; 11. water inlet; 12. water outlet; 13. cooling water tank; 14. heat preservation layer; 15. gas outlet; 2. water-cooled copper electrode; 21. air inlet hole; 3. graphite electrode; 31. cavity; 4. material column; 41. air distribution port; 5. electrode connecting plate; 51. fixed part; 52. connecting part; 6. intelligent power supply. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the present application, the technical solutions of the present application are further described below in combination with the drawings and examples.

[0035] In the description of the present application, it should be noted that for orientation words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0036] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence.

[0037] Please refer to Figures 1 to 2 As shown in the drawings, a high-efficiency carbon ceramic brake disc vertical deposition furnace comprises a water-cooled furnace shell 1, a water-cooled copper electrode 2, a graphite electrode 3, a material column 4, an electrode connecting plate 5 and an intelligent power supply 6.

[0038] The water-cooled furnace shell 1 is also provided with a heat preservation layer 14 and an air outlet 15. The heat preservation layer 14 is arranged on the inner wall of the water-cooled furnace shell 1, and the air outlet 15 is arranged on the top of the water-cooled furnace shell 1. Specifically, the water-cooled furnace shell 1 is also provided with a water inlet 11, a water outlet 12 and a cooling water tank 13. The cooling water tank 13 is arranged on the water-cooled furnace shell 1, the water inlet 11 is arranged at the lower end of the water-cooled furnace shell 1, and the water outlet 12 is arranged at the upper end of the water-cooled furnace shell 1. The water inlet 11 and the water outlet 12 are both in communication with the cooling water tank 13. It can be understood that the cooling water flows into the cooling water tank 13 through the water inlet 11 to absorb heat, and then flows out through the water outlet 12.

[0039] The water-cooled copper electrode 2 extends into the water-cooled furnace shell 1 through the bottom of the water-cooled furnace shell 1 and the heat preservation layer 14. The water-cooled copper electrode 2 is provided with an air inlet hole 21. It can be understood that the hydrocarbon gas can enter the deposition furnace through the air inlet hole 21.

[0040] The graphite electrode 3 is arranged inside the water-cooled furnace shell 1 and is fixedly connected with the water-cooled copper electrode 2. Specifically, the graphite electrode 3 is provided with a cavity 31 inside, the cavity 31 is in communication with the air inlet hole 21 of the water-cooled copper electrode 2, and the cavity 31 is in communication with the material column 4. It can be understood that the cavity 31 can buffer the hydrocarbon gas flowing into the cavity 31, so that the hydrocarbon gas can be fully preheated to the reaction temperature before entering the material column 4.

[0041] The material column 4 is a hollow pipe with an open lower end, the lower end of the material column 4 is fixedly connected to the graphite electrode 3, the gas inlet hole 21 is in communication with the material column 4, specifically, the material column 4 is made of carbon fiber, and a gas distribution port 41 is arranged on the material column 4.

[0042] The electrode connecting plate 5 is a triangular carbon fiber plate, which includes a fixed part 51 and a connecting part 52, the fixed part 51 is connected to the upper end of the material column 4, and the connecting part 52 is connected to adjacent fixed parts 51.

[0043] The intelligent power supply 6 is connected to the water-cooled copper electrode 2.

[0044] Based on a heating method of a high-efficiency carbon ceramic brake disc vertical deposition furnace, specifically, the heating method includes the following steps:

[0045] S1, install the brake disc preform, fix the brake disc preform on the material column 4, and make the bottom brake disc preform contact with the graphite electrode 3;

[0046] S2, install the electrode connecting plate 5, install the electrode connecting plate 5 on the material column 4, and make the brake disc preform contact with the electrode connecting plate 5;

[0047] S3, heating, the intelligent power supply 6 is powered on, the brake disc preform and the material column 4 act as the load of the power circuit to generate heat, and the brake disc preform installed on the material column 4 is heated;

[0048] S4, ventilation. The carbon-hydrogen gas enters the material column 4 through the channel formed by the gas inlet hole 21 and the cavity 31, and is sprayed onto the brake disc preform through the gas distribution port 41 arranged on the material column 4 for deposition. When the carbon-hydrogen gas passes through the cavity 31, the graphite electrode 3 preheats the carbon-hydrogen gas in the cavity 31, so that the carbon-hydrogen gas can quickly reach the reaction temperature. Specifically, the carbon-hydrogen gas is a mixed gas of methane and propane.

[0049] S5, constant temperature deposition, as the density of the brake disc preform gradually increases, the resistance of the brake disc preform also changes, the intelligent power supply 6 controls the current to maintain the temperature in the deposition furnace stable, specifically, the temperature in the deposition furnace is maintained stable at 950-1200℃.

[0050] S6, cooling, when the intelligent power supply 6 detects that the resistance changes to a preset value, the intelligent power supply 6 is powered off, and the temperature in the deposition furnace gradually decreases.

[0051] The above-mentioned are only embodiments of the present application, and the common knowledge of specific structures and characteristics in the scheme is not described in detail, and the ordinary skilled person in the art knows all the ordinary technical knowledge in the technical field of the application before the application date or the priority date, can know all the prior art in the field, and has the ability to apply conventional experimental means before that date, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary skilled person in the art can perfect and implement the present scheme under the guidance of the present application, and the ordinary

Claims

1. A high-efficiency carbon-ceramic brake disc vertical deposition furnace, characterized in that, include: Water-cooled furnace shell (1), water-cooled copper electrode (2), graphite electrode (3), material column (4), electrode connecting plate (5) and intelligent power supply (6). The water-cooled furnace shell (1) is also provided with a heat insulation layer (14) and an air outlet (15). The heat insulation layer (14) is provided on the inner wall of the water-cooled furnace shell (1), and the air outlet (15) is provided on the top of the water-cooled furnace shell (1). One end of the water-cooled copper electrode (2) extends through the bottom of the water-cooled furnace shell (1) and the insulation layer (14) into the water-cooled furnace shell (1), and an air inlet (21) is provided on the water-cooled copper electrode (2). The graphite electrode (3) is disposed inside the water-cooled furnace shell (1), and the graphite electrode (3) is fixedly connected to the water-cooled copper electrode (2); a cavity (31) is provided inside the graphite electrode (3), the cavity (31) is connected to the air inlet (21) of the water-cooled copper electrode (2), and the cavity (31) is connected to the material column (4). The column (4) is a hollow tube with an open bottom. The lower end of the column (4) is fixedly connected to the graphite electrode (3). The air inlet (21) is connected to the column (4). The column (4) is made of carbon fiber and has an air distribution port (41). The electrode connecting plate (5) is a triangular carbon fiber plate, which includes a fixing part (51) and a connecting part (52). The fixing part (51) is connected to the upper end of the material column (4), and the connecting part (52) is connected to the adjacent fixing part (51). The intelligent power supply (6) is connected to the water-cooled copper electrode (2).

2. The high-efficiency carbon ceramic brake disc vertical deposition furnace according to claim 1, characterized in that: The water-cooled furnace shell (1) is also provided with a water inlet (11), a water outlet (12), and a cooling water tank (13). The cooling water tank (13) is located on the water-cooled furnace shell (1). The water inlet (11) is located at the lower end of the water-cooled furnace shell (1) and at the upper end of the water-cooled furnace shell (1). The water inlet (11) and the water outlet (12) are both connected to the cooling water tank (13).

3. The heating method of a high-efficiency carbon ceramic brake disc vertical deposition furnace according to claim 1, characterized in that: The heating method includes the following steps: S1. Install the brake disc preform, fix the brake disc preform on the material column (4), and make the bottom brake disc preform contact the graphite electrode (3); S2. Install electrode connecting plate (5), install electrode connecting plate (5) on material column (4) and make contact between the brake disc preform and electrode connecting plate (5); S3, heating, the intelligent power supply (6) is powered on, the brake disc preform and the material column (4) are heated as the load of the power-on circuit; S4. Ventilation: Hydrocarbon gas enters the material column (4) through the channel formed by the air inlet (21) and cavity (31), and is sprayed onto the brake disc preform through the air distribution port (41) set on the material column (4) for deposition. When the hydrocarbon gas passes through the cavity (31), the graphite electrode (3) preheats the hydrocarbon gas in the cavity (31) so that the hydrocarbon gas quickly reaches the reaction temperature. S5. Constant temperature deposition. As the density of the brake disc preform gradually increases, its own resistance will also change. The intelligent power supply (6) controls the current to keep the temperature inside the deposition furnace stable. S6. Cooling down: When the intelligent power supply (6) detects a change in resistance to the preset value, the intelligent power supply (6) cuts off the power, and the temperature inside the deposition furnace gradually decreases.

4. The heating method for a high-efficiency carbon ceramic brake disc according to claim 3, characterized in that: The hydrocarbon gas introduced into the deposition furnace during S4 is a mixture of methane and propane.

5. The heating method for a high-efficiency carbon ceramic brake disc according to claim 4, characterized in that: In the S5 isothermal deposition process, the temperature inside the deposition furnace is 950°C to 1200°C.

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