Casting process of heat-resistant and wear-resistant cast steel

Abstract

The invention relates to a casting process of heat-resistant and wear-resistant cast steel in the field of cast steel, and specifically comprises the following steps: first, preheating a mold provided with a rough texture mold cavity, pouring molten cast steel and using coolant to cool the mold in sections, recovering the coolant for preheating inert gas and metal powder, then demoulding the cast steel and transferring it to a spraying room with insulation, inputting inert gas of a set temperature to keep the cast steel warm during the transfer process, spraying metal powder on the cast steel in the spraying room and heating and curing, the metal powder covering the surface texture of the cast steel during spraying, then, cooling the cast steel in a cooling room and outputting the cast steel, cleaning, degreasing and sandblasting the output cast steel surface, finally, spraying a ceramic coating and baking and curing at a low temperature, when the cast steel is formed, a rough texture for metal powder attachment is provided on its surface, and the heat energy recovered during the cooling process of the cast steel can be used for the metal layer spraying work on the surface of the cast steel component, thereby improving the work efficiency and the utilization rate of heat energy.

Description

Technical Field

[0001] The invention relates to a casting process of heat-resistant and wear-resistant cast steel, in particular to a casting process of heat-resistant and wear-resistant cast steel applied in the field of cast steel. Background Art

[0002] Steel castings refer to parts made of cast steel, which have similar properties to cast iron. One of the advantages of steel castings is the flexibility of design. Designers have the greatest freedom to choose the shape and size of castings. With the development of industry, the performance requirements for steel castings are getting higher and higher, especially in some harsh working environments, steel castings need to have good wear resistance and heat resistance.

[0003] In order to solve the problem of poor heat resistance and wear resistance of steel castings, a certain steel casting production process in the market adopts a design of coating metal coating or ceramic coating on the surface of steel castings, which has a certain market share.

[0004] The specification of Chinese invention patent CN117070128B discloses a high-strength, corrosion-resistant stainless steel casting and its preparation process. The invention uses the amino group of dopamine hydrochloride and 2-(trifluoromethyl) acrylic acid as raw materials to react to obtain a functional monomer containing dihydroxyl groups, and polymerizes the functional monomer with butyl acrylate and glycidyl methacrylate to obtain a fluorine-containing polymer; then the fluorine-containing polymer is mixed with a diol and an isocyanate to prepare a fluorine-containing polyurethane prepolymer; finally, the isocyanate group of the polyurethane prepolymer reacts with the hydroxyl group in the epoxy resin to modify the epoxy resin; the polyurethane has high bonding strength, good flexibility, and higher mechanical strength. It can form an interpenetrating polymer network with the epoxy resin, and produce forced compatibility and synergistic effects, and has a better film-forming effect. Coating it on the surface of the stainless steel casting can improve the surface hydrophobicity and salt spray corrosion resistance.

[0005] Currently, most of the coating on the surface of cast steel is carried out after the cast steel is produced and formed, and the coating also needs to be pre-treated and transferred to specific equipment. The operation is complicated, and the existing production process of steel castings consumes a lot of energy, and heat recovery is inconvenient and not easy to apply to the post-processing of steel castings. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the current surface coating of cast steel is mostly carried out after the cast steel is completely produced and formed, and the coating also needs to be pretreated and transferred to specific equipment, which makes the operation complicated. In addition, the existing production process of cast steel parts consumes a lot of energy, and heat recovery is inconvenient and not easy to apply to the post-processing of cast steel parts.

[0007] In order to solve the above problems, the present invention provides a casting process for heat-resistant and wear-resistant cast steel, which specifically comprises the following steps:

[0008] A1, casting mold pretreatment, preheating the mold to a set temperature, and setting the casting mold with a mold cavity having a rough texture;

[0009] A2, cast steel casting, pour the molten cast steel into the preheated mold to ensure that the molten cast steel evenly fills the mold cavity; the casting mold is cooled to the set temperature by segmented liquid cooling. In each cooling process, the coolant is recovered and the coolant temperature is stabilized. The fluid with a stable temperature greater than T2 is used to preheat the inert gas and metal powder;

[0010] A3, the cast steel is demoulded and transferred to the spraying room; during the transfer process, an inert gas at a set temperature is input to keep the cast steel warm;

[0011] A4, spraying metal coating, the cast steel is sprayed with metal powder in the spraying room, and the metal powder is evenly sprayed on the surface of the cast steel through a high-pressure spray gun. During the spraying process, the metal powder is sprayed evenly, with a moderate thickness and covers the surface texture of the cast steel;

[0012] After spraying is completed, hot air is introduced into the spraying chamber to heat the cast steel and solidify the metal powder on the surface of the cast steel;

[0013] A5, after the metal coating is finalized, the cast steel is transferred to the cooling chamber for cooling and then output. The cooling chamber outputs cooling airflow in sections to cool the cast steel;

[0014] A6, cast steel pretreatment, cleaning, degreasing and sandblasting the cast steel surface;

[0015] A7, spray ceramic coating on the surface of cast steel. During the spraying process, the ceramic coating completely covers the metal coating. After spraying, low-temperature baking is performed to solidify the ceramic coating.

[0016] In the casting process of the above-mentioned heat-resistant and wear-resistant cast steel, the cast steel component of this scheme has a rough surface when it is formed to facilitate the adhesion of metal powder, and the heat energy recovered during the cooling process of the cast steel can be used for spraying the metal layer on the surface of the cast steel component, thereby improving work efficiency and improving heat energy utilization.

[0017] As a further improvement of the present application, the average roughness range of the texture on the mold cavity is: 1.6-3.2 μm.

[0018] As a further improvement of the present application, a horizontal guide rail is provided between the casting mold and the spraying chamber, a support platform is provided on the movable end of the horizontal guide rail, and the initial position of the support platform is located directly below the casting mold; a cooling chamber is installed at the output end of the spraying chamber, the horizontal guide rail runs through the spraying chamber and the cooling chamber, and an insulating sealing shell is installed between the horizontal guide rail, the spraying chamber and the cooling chamber;

[0019] The spray chamber is connected with a material delivery pipe, the casting mold includes a fixed mold and a movable mold, the fixed mold is equipped with a fixed frame, the movable mold is connected with a hydraulic cylinder, the outer end of the casting mold is equipped with a cooling frame covering the fixed mold and the movable mold, the cooling frame includes an insulation shell, a heat exchange tube row is laid in the insulation shell, and a temperature stabilizing tank is installed at the output end of the heat exchange tube row;

[0020] An air pipe is provided on the cooling rack, and the air pipe exchanges heat with the temperature stabilizing tank. The output end of the temperature stabilizing tank is connected with a liquid infusion pipe and a liquid discharge pipe. The air pipe is connected with the spraying room and the cooling room, and the liquid infusion pipe is connected with the material delivery pipe. Nozzles matching the air pipe are installed in the spraying room and the cooling room, and a heat conduction pipe row matching the liquid infusion pipe is laid on the material delivery pipe.

[0021] As a further improvement of the present application, the casting mold in step A2 is cooled in sections, and the coolant is discharged into the temperature stabilization tank to stabilize the temperature after each cooling section. After the fluid temperature is stabilized, the stable temperature t is detected. When the stable temperature t is greater than T1, the fluid in the temperature stabilization tank is output through the infusion pipe. When the stable temperature t is less than or equal to T1 and greater than T2, the temperature stabilization tank exchanges heat with the gas pipe. When the stable temperature t is less than or equal to T2, the fluid in the temperature stabilization tank is discharged through the discharge pipe.

[0022] As another improvement of the present application, the temperature stabilization time of the fluid in the temperature stabilization tank matches the time for the heat exchange tube bank to cool the casting mold.

[0023] As another improved supplement of the present application, the temperature stabilization time of the fluid in the temperature stabilization tank matches the time for the heat exchange tube bank to cool the casting mold.

[0024] As another improved supplement of the present application, a temperature regulating structure is installed on both the gas pipe and the liquid pipe, and the temperature regulating structure includes a heater and a cooler.

[0025] As another improvement of the present application, it also includes a casting control system, which includes a processor, to which is connected a monitoring module, an equipment control module, a fluid temperature control module and an alarm module; the casting mold, spray chamber, cooling chamber and horizontal guide rails are all connected to the equipment control module; a liquid pump is installed on the cooling rack, and a fan is installed on the gas pipe; the liquid pump and the fan are both connected to the control module signal; the functions of the fluid temperature control module include: controlling the temperature regulating structure to heat the airflow or cooling liquid and regulating the gas flow rate in the gas pipe.

[0026] In summary, when cast steel is formed, a rough texture is set on its surface to facilitate the attachment of metal powder, and the heat energy recovered during the cooling process of the cast steel can be used for spraying the metal layer on the surface of the cast steel component, thereby improving work efficiency and improving the utilization rate of heat energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a method flow chart of the first implementation mode of this application;

[0028] Figure 2 This is a schematic diagram of the connection between the mold and the spray chamber in the first and second embodiments of the present application;

[0029] Figure 3 for Figure 2 Side view of

[0030] Figure 4 for Figure 2 A cross-sectional view of

[0031] Figure 5 This is a schematic diagram of the working of the device according to the second embodiment of the present application;

[0032] Figure 6 This is a system block diagram of the second implementation mode of the present application;

[0033] Figure 7 This is a diagram of the changes in the cast steel casting process of the first and second embodiments of the present application.

[0034] Description of the numbers in the figure:

[0035] 1 casting mold, 101 fixed mold, 102 movable mold, 2 spraying room, 21 feeding pipe, 3 cooling room, 4 cooling rack, 401 insulation shell, 402 temperature stabilizing tank, 5 gas pipe, 6 liquid pipe. DETAILED DESCRIPTION

[0036] The following describes two implementation modes of the present application in detail with reference to the accompanying drawings.

[0037] The first implementation method:

[0038] Figure 1-2 and Figure 7 A casting process of heat-resistant and wear-resistant cast steel is shown, which specifically includes the following steps:

[0039] A1, pre-treating the casting mold 1, preheating the mold to a set temperature, and providing the casting mold 1 with a mold cavity having a rough texture; the average roughness range of the texture on the mold cavity is: 1.6-3.2 μm, and the average roughness range of this scheme is suitable for metal powder attachment; this step pre-treats and pre-heats the mold, so that the molten cast steel fills the mold cavity more evenly, and reduces the probability of pores or shrinkage cavities inside the casting;

[0040] A2, cast steel casting, pouring the molten cast steel into the preheated mold 1 to ensure that the molten cast steel evenly fills the mold cavity; the casting mold 1 is cooled to the set temperature by segmented liquid cooling, and the segmented liquid cooling method allows the cast steel to shrink evenly during the cooling process, avoiding deformation or cracks in the casting; during segmented cooling, fluids with different step temperatures are input into the cooling rack 4 in sections, so that the cooling rack 4 and the casting mold 1 exchange heat, so as to reduce the temperature of the cast steel in the casting mold 1 in sections;

[0041] In each cooling process, the coolant is recycled to the temperature stabilization tank 402 and the coolant temperature is stabilized, and the fluid with a stable temperature greater than T2 is used for preheating the inert gas and the metal powder;

[0042] A3, the cast steel is demoulded and transferred to the spraying room 2; during the transfer process, an inert gas of a set temperature is input to keep the cast steel warm; the temperature of the cast steel is effectively maintained to prevent it from being too low when transferred to the spraying room 2, and the intermediate cast steel is swept by the air flow during the transportation process, which makes it easy to remove impurities on its surface;

[0043] A4, spraying metal coating, the cast steel is sprayed with metal powder in the spraying room 2, and the metal powder is evenly sprayed on the surface of the cast steel through a high-pressure spray gun. During the spraying process, the metal powder is sprayed evenly, with a moderate thickness and covers the surface texture of the cast steel;

[0044] After spraying is completed, hot air flow is introduced into the spraying chamber 2 to heat the cast steel and solidify the metal powder on the surface of the cast steel;

[0045] A5, after the metal coating is finalized, the cast steel is transferred to the cooling chamber for cooling and then output. The cooling chamber outputs cooling airflow in sections to cool the cast steel;

[0046] A6, cast steel pretreatment, cleaning, degreasing and sandblasting the cast steel surface to prepare for the subsequent spraying of ceramic coating;

[0047] A7, spray ceramic coating on the surface of cast steel. During the spraying process, the ceramic coating completely covers the metal coating. After spraying, low-temperature baking is performed to solidify the ceramic coating.

[0048] The casting process of this scheme ensures the heat resistance and wear resistance of cast steel by applying metal coating and ceramic coating, recovers heat to a limited extent during production, improves the utilization rate of thermal energy, and makes the surface of the formed cast steel rough so that the metal coating can be sprayed directly after the cast steel is formed, thereby improving production efficiency.

[0049] In summary, this casting process realizes the manufacture of heat-resistant and wear-resistant cast steel through the synergistic effect of multiple steps. This process improves the quality and heat-resistant and wear-resistant properties of cast steel through metal coating and ceramic coating. It also sets a rough texture cavity in the mold to ensure that the surface of the molded cast steel is rough, so that the metal coating can be sprayed directly after the cast steel is formed, thereby improving production efficiency. At the same time, the heat recovered during the mold cooling process can also be attached to the metal coating spraying work, thereby improving the utilization rate of thermal energy and easily reducing production costs. At the same time, this process is also environmentally friendly, capable of recycling and utilizing resources and reducing the impact on the environment.

[0050] Second implementation method:

[0051] Figure 2-7 It is shown that a horizontal guide rail is arranged between the casting mold 1 and the spraying chamber 2, and a plurality of high-pressure nozzles for metal powder spraying are arranged in the spraying chamber 2, and the angle of the high-pressure nozzles is adjustable, and a baking device and a hot air device are also installed in the spraying chamber 2; a support platform is arranged on the movable end of the horizontal guide rail, and the initial position of the support platform is located directly below the casting mold 1; a cooling chamber 3 is installed at the output end of the spraying chamber 2, and the horizontal guide rail runs through the spraying chamber 2 and the cooling chamber 3, and an insulating sealing shell is installed between the horizontal guide rail, the spraying chamber 2 and the cooling chamber 3; a mechanical arm for casting steel flipping and angle adjustment is arranged in the spraying chamber 2; the unsprayed surface of the cast steel is adjusted to match the high-pressure nozzle in the spraying chamber 2 by the mechanical arm; and an air cooling device is installed in the cooling chamber 3;

[0052] The input and output ends of the spray chamber 2 and the cooling chamber 3 are both equipped with gates; the input end of the cooling chamber 3 is connected to the output end of the spray chamber 2;

[0053] The spray chamber 2 is connected with a feed pipe 21, the casting mold 1 includes a fixed mold 101 and a movable mold 102, a fixed frame is installed on the fixed mold 101, and a hydraulic cylinder is connected to the movable mold 102. A cooling rack 4 covering the fixed mold 101 and the movable mold 102 is installed at the outer end of the casting mold 1, and the cooling rack 4 includes an insulation shell 401, and a heat exchange tube row is laid in the insulation shell 401, and a temperature stabilizing tank 402 is installed at the output end of the heat exchange tube row; the insulation shell 401 of the present scheme is U-shaped, and a guide tube connected to the heat exchange tube row can be provided in the casting mold 1 to promote the cooling of the lower end of the casting mold 1 that is not in contact with the insulation shell 401, so as to avoid uneven cooling of the cast steel;

[0054] An air pipe 5 is provided on the cooling rack 4, and the air pipe 5 passes through the temperature stabilizing tank 402. The air pipe 5 exchanges heat with the temperature stabilizing tank 402. The output end of the temperature stabilizing tank 402 is connected with a liquid infusion pipe 6 and a liquid discharge pipe. The air pipe 5 is connected to the spraying room 2 and the cooling room 3. The liquid infusion pipe 6 is connected to the material delivery pipe 21. Nozzles matching the air pipe 5 are installed in the spraying room 2 and the cooling room 3. A heat conduction pipe row matching the liquid infusion pipe 6 is laid on the material delivery pipe 21.

[0055] It should be noted that the gas delivery pipe 5 is used to input inert gas to the horizontal guide rail, the spraying chamber 2 and the cooling chamber 3. The function of the inert gas is to prevent the high-temperature metal powder from reacting with the air during metal powder spraying and to prevent the metal powder from reacting with the high-temperature cast steel when in contact;

[0056] The temperature stabilization time of the fluid in the temperature stabilization tank 402 matches the time for the heat exchange tube bank to cool the casting mold 1 . The temperature stabilization time of the fluid in the temperature stabilization tank 402 matches the time for the heat exchange tube bank to cool the casting mold 1 .

[0057] In the first embodiment, the casting mold 1 of step A2 is cooled in sections. After each section of cooling, the coolant is discharged into the temperature stabilization tank 402 to stabilize the temperature. After the fluid temperature is stabilized, the stable temperature t is detected. When the stable temperature t is greater than T1, the fluid in the temperature stabilization tank 402 is output through the infusion pipe 6. The infusion pipe 6 introduces the high-temperature coolant into the heat-conducting pipe row on the feed pipe 21. The heat-conducting pipe row exchanges heat with the feed pipe 21, so that the metal powder in the feed pipe 21 is preheated, so that when the spraying room sprays the metal powder, the metal powder with a higher temperature is input to avoid the contact between the low-temperature metal and the high-temperature cast steel surface, which damages the cast steel surface; the temperature stabilization tank 402 outputs the fluid at a set flow rate;

[0058] When the stable temperature t is less than or equal to T1 and greater than T2, the temperature stabilizing tank 402 exchanges heat with the gas transmission pipe 5. When the stable temperature t is less than or equal to T2, the fluid in the temperature stabilizing tank 402 is discharged through the drain pipe.

[0059] It should be noted that in this solution, before the demoulded cast steel is sprayed, the casting mold 1 is cooling another molded cast steel so that the cast steel to be sprayed can effectively utilize the higher temperature coolant discharged during the initial cooling stage.

[0060] It also includes a casting control system, which includes a processor, a monitoring module, an equipment control module, a fluid temperature control module and an alarm module are connected to the processor, and the casting mold 1, the spraying room 2, the cooling room 3 and the horizontal guide rail are all connected to the equipment control module; the casting mold 1, the spraying room 2, the cooling room 3 and the cooling rack 4 are all installed with temperature sensors matching the monitoring module; the fluid temperature in the temperature stabilization tank 402 is monitored in real time;

[0061] The gas pipe 5 and the liquid pipe 6 are both installed with a temperature regulating structure, which includes a heater and a cooler. The temperature regulating structure is used to heat or cool the corresponding fluid to a set temperature.

[0062] A liquid pump is installed on the cooling rack 4, and coolant is input into the cooling rack 4 through the liquid pump. A fan is installed on the gas pipe 5, and inert gas is introduced into the gas pipe 5 through the fan. The liquid pump and the fan are both connected to the control module signal. The functions of the fluid temperature control module include: controlling the temperature adjustment structure to heat the airflow or coolant and regulating the gas flow rate in the gas pipe 5; an electromagnetic flow valve is installed on the gas pipe 5, and the temperature of the output inert gas is adjusted by adjusting the heat exchange time between the inert gas and the temperature stabilization tank 402;

[0063] This solution uses a temperature stabilizing tank and a temperature regulating structure to achieve efficient heat recovery of the coolant. The introduction of a casting control system can achieve comprehensive monitoring and control of the casting process. Specifically, the monitoring module can monitor the temperature in the mold, spray chamber, cooling chamber and cooling rack in real time. The equipment control module can control the working status of equipment such as horizontal guide rails, liquid pumps and fans. The fluid temperature control module can adjust the temperature and flow rate of the inert gas and coolant according to actual needs, so that the inert gas temperature can adapt to the airflow temperature requirements when the spray chamber 2 and the cooling chamber 3 are working.

[0064] The coolant can easily meet the temperature requirement of the metal powder in the feeding pipe 21 when it is preheated;

[0065] The alarm module can issue an alarm in time when an abnormal situation occurs, reminding the operator to deal with it.

[0066] The design of the temperature stabilizing tank in this embodiment can realize efficient recovery of heat in the coolant. When the coolant temperature is high, it can be used as a heat source for preheating metal powder; when the coolant temperature is moderate, it can be used for heat exchange with inert gas; when the coolant temperature is low, it can be directly discharged. This not only saves energy, but also improves the efficiency of the casting process.

[0067] By introducing the temperature regulating structure, the temperature of the inert gas and the coolant can be precisely controlled. In this way, the air flow temperature in the spraying room and the cooling room, as well as the preheating temperature of the metal powder in the feeding pipe can be flexibly adjusted according to actual needs, thereby meeting the needs of different casting processes.

[0068] In summary, when cast steel is formed, a rough texture is set on its surface to facilitate the attachment of metal powder, and the heat energy recovered during the cooling process of the cast steel can be used for spraying the metal layer on the surface of the cast steel component, thereby improving work efficiency and improving the utilization rate of heat energy.

[0069] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A casting process for heat-resistant and wear-resistant cast steel, characterized in that: The specific steps include: A1, pre-treating a casting mold (1), preheating the mold to a set temperature, wherein the casting mold (1) is provided with a mold cavity having a rough texture; A2, cast steel casting, pouring the molten cast steel into the preheated mold (1) to ensure that the molten cast steel evenly fills the mold cavity; the casting mold (1) is cooled to a set temperature by segmented liquid cooling, and in each cooling process, the coolant is recovered and the coolant temperature is stabilized, and the fluid with a stable temperature greater than T2 is used for preheating the inert gas and metal powder; A3, the cast steel is demoulded and transferred to the spray chamber (2); during the transfer process, an inert gas at a set temperature is input to keep the cast steel warm; A horizontal guide rail is provided between the casting mold (1) and the spray chamber (2); a support platform is provided on the movable end of the horizontal guide rail, and the initial position of the support platform is located directly below the casting mold (1); a cooling chamber (3) is installed at the output end of the spray chamber (2); the horizontal guide rail passes through the spray chamber (2) and the cooling chamber (3); and a heat-insulating sealing shell is installed between the horizontal guide rail, the spray chamber (2) and the cooling chamber (3); The spray chamber (2) is connected to a material delivery pipe (21), the casting mold (1) comprises a fixed mold (101) and a movable mold (102), the fixed mold (101) is equipped with a fixed frame, the movable mold (102) is connected to a hydraulic cylinder, a cooling frame (4) covering the fixed mold (101) and the movable mold (102) is installed at the outer end of the casting mold (1), the cooling frame (4) comprises a heat-insulating shell (401), a heat-exchange tube row is laid in the heat-insulating shell (401), and a temperature stabilizing tank (402) is installed at the output end of the heat-exchange tube row; An air delivery pipe (5) is provided on the cooling rack (4), the air delivery pipe (5) exchanges heat with the temperature stabilizing tank (402), the output end of the temperature stabilizing tank (402) is connected to a liquid delivery pipe (6) and a liquid discharge pipe, the air delivery pipe (5) is connected to the spray chamber (2) and the cooling chamber (3), the liquid delivery pipe (6) is connected to the material delivery pipe (21), the spray chamber (2) and the cooling chamber (3) are both equipped with nozzles matching the air delivery pipe (5), and a heat conduction pipe row matching the liquid delivery pipe (6) is laid on the material delivery pipe (21); A4, spraying metal coating, the cast steel is sprayed with metal powder in the spraying room (2), and the metal powder is sprayed evenly on the surface of the cast steel through a high-pressure spray gun. During the spraying process, the metal powder is sprayed evenly and has a moderate thickness and covers the surface texture of the cast steel; After the spraying is completed, a hot air flow is introduced into the spraying chamber (2) to heat the cast steel and solidify the metal powder on the surface of the cast steel; A5, after the metal coating is finalized, the cast steel is transferred to the cooling chamber for cooling and then output. The cooling chamber outputs cooling airflow in sections to cool the cast steel; A6, cast steel pretreatment, cleaning, degreasing and sandblasting the cast steel surface; A7, spray ceramic coating on the surface of cast steel. During the spraying process, the ceramic coating completely covers the metal coating. After spraying, low-temperature baking is performed to solidify the ceramic coating.

2. The casting process of heat-resistant and wear-resistant cast steel according to claim 1, characterized in that: The average roughness range of the texture on the mold cavity is: 1.6-3.2μm.

3. The casting process of heat-resistant and wear-resistant cast steel according to claim 1, characterized in that: The casting mold (1) in step A2 is cooled in sections, and after each section of cooling, the cooling liquid is discharged into the temperature stabilization tank (402) to stabilize the temperature. After the fluid temperature is stabilized, the stable temperature t is detected. When the stable temperature t is greater than T1, the fluid in the temperature stabilization tank (402) is discharged through the liquid infusion pipe (6). When the stable temperature t is less than or equal to T1 and greater than T2, the temperature stabilization tank (402) exchanges heat with the gas delivery pipe (5). When the stable temperature t is less than or equal to T2, the fluid in the temperature stabilization tank (402) is discharged through the liquid discharge pipe.

4. The casting process of heat-resistant and wear-resistant cast steel according to claim 3, characterized in that: The temperature stabilization time of the fluid in the temperature stabilization tank (402) matches the time for the heat exchange tube bank to cool the casting mold (1).

5. The casting process of heat-resistant and wear-resistant cast steel according to claim 4, characterized in that: The gas delivery pipe (5) is used to output inert gas, and a plurality of nozzles matching the gas delivery pipe (5) are installed in the heat-insulating sealed shell, and the nozzles are located in the horizontal guide rail area between the casting mold (1) and the spray chamber (2).

6. A casting process for heat-resistant and wear-resistant cast steel according to claim 5, characterized in that: The gas delivery pipe (5) and the liquid delivery pipe (6) are both installed with a temperature regulating structure, and the temperature regulating structure comprises a heater and a cooler.

7. A casting process for heat-resistant and wear-resistant cast steel according to claim 6, characterized in that: The casting control system also includes a casting control system, which includes a processor, to which a monitoring module, an equipment control module, a fluid temperature control module and an alarm module are connected, the casting mold (1), the spray chamber (2), the cooling chamber (3) and the horizontal guide rail are all connected to the equipment control module, a liquid pump is installed on the cooling rack (4), a fan is installed on the air pipe (5), and the liquid pump and the fan are both connected to the control module signal, and the functions of the fluid temperature control module include: controlling the temperature regulating structure to heat the air flow or cooling liquid and regulating the gas flow rate in the air pipe (5).

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