A lead infusion process and device
By roughening the inner wall of the stainless steel container with sandblasting and gradient cooling, the problems of excessive lead oxide slag, incomplete pouring, poor adhesion between the lead body and the inner wall of the container, and easy deformation of the container were solved, thus achieving high-quality molding of the lead body and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHAANXI HUATONG ELECTROMECHANICAL MFG CO LTD
- Filing Date
- 2026-05-28
- Publication Date
- 2026-07-24
Smart Images
Figure CN122441925A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of lead filling technology, and in particular to a lead filling process and apparatus. Background Technology
[0002] Lead, a metal with high density, strong corrosion resistance, and excellent radiation protection properties, is widely used in industrial production, radiation protection, and battery manufacturing. In actual production, molten lead is often poured into containers for molding. Stainless steel containers are the preferred material for lead casting due to their high temperature resistance, corrosion resistance, high structural strength, and good molding precision. However, the melting process of lead produces a large amount of oxide slag, which affects the density and properties of the cast lead. If the temperature is too low, the fluidity of the molten lead is insufficient, and defects such as incomplete filling, porosity, and cold shuts are likely to occur during casting. Without targeted pretreatment, the molten lead does not adhere well to the inner wall of the stainless steel container, and the lead easily separates from the inner wall of the container after cooling. Furthermore, uneven heating of the container can easily cause deformation, affecting the reusability of the container and the casting precision. Summary of the Invention
[0003] This application aims to at least partially solve one of the aforementioned technical problems in the prior art. Therefore, embodiments of this application provide a lead-filling process and apparatus, effectively solving the technical problems in the prior art such as excessive lead oxide slag, incomplete filling, poor adhesion between the lead body and the inner wall of the container, and easy deformation of the container.
[0004] In a first aspect, this application provides a lead-filling process, comprising the following steps: Roughening process: Select a high-temperature resistant stainless steel container and roughen the inner wall of the stainless steel container by sandblasting. Preheating step: Place the stainless steel container in a preheating oven for preheating; Melting step: Pure lead material is put into the melting furnace, the melting furnace is sealed and nitrogen is introduced as a protective gas, and heated until the lead material is completely melted; Pouring steps: Fix the preheated stainless steel container at the pouring station, and use a quantitative pouring mechanism to slowly pour molten lead into the stainless steel container through the guide channel. During the pouring process, the end of the guide channel is submerged below the surface of the molten lead. Settling step: After pouring, transfer the stainless steel container containing the lead liquid into a constant temperature settling chamber and let it stand for 15-20 minutes. Cooling steps: Gradient cooling is adopted. First, the temperature is naturally cooled to 180°C, and then circulating cold air is introduced to accelerate the cooling to room temperature, thus completing the molding of the lead body in the stainless steel container.
[0005] According to an embodiment of the first aspect of this application, in the roughening process, the sandblasting roughening treatment uses 80-120 mesh quartz sand and a sandblasting pressure of 0.4-0.6 MPa, so that the roughness Ra of the inner wall of the container reaches 6.3-12.5 μm.
[0006] According to an embodiment of the first aspect of this application, in the preheating step, the stainless steel container is placed in a preheating furnace and heated to 280°C-320°C, and kept at that temperature for 20-30 minutes.
[0007] According to an embodiment of the first aspect of this application, in the melting step, the flow rate of nitrogen protective gas introduced into the melting furnace is 5-8 L / min.
[0008] According to an embodiment of the first aspect of this application, in the melting step, the melting temperature is controlled at 450℃-520℃, heated until the lead material is completely melted, and held at that temperature for 10-15 minutes. At the same time, a stirring device is used to stir the molten lead at a speed of 30-50 r / min.
[0009] According to an embodiment of the first aspect of this application, in the pouring step, when pouring molten lead into a stainless steel container, the pouring flow rate is controlled to be 0.8-1.5 L / min.
[0010] According to an embodiment of the first aspect of this application, in the settling step, the stainless steel container containing the lead liquid is kept at a constant temperature of 260°C-290°C.
[0011] According to an embodiment of the first aspect of this application, in the cooling step, the wind speed of the circulating cold air is 2-3 m / s.
[0012] Secondly, this application provides a lead-filling device, including: a smelting furnace, a quantitative casting mechanism, a casting station, a preheating furnace, and a constant-temperature settling chamber. The smelting furnace is equipped with a heating component inside, and the discharge end of the smelting furnace is connected to the quantitative casting mechanism through a guide channel. The casting station is equipped with a clamp, and a horizontal adjustment component is provided below the clamp. The preheating furnace and the constant-temperature settling chamber are respectively located on both sides of the casting station, and both the preheating furnace and the constant-temperature settling chamber are equipped with a temperature control module. The preheating furnace is used to preheat stainless steel containers.
[0013] According to an embodiment of the second aspect of this application, it further includes a stirring assembly, which includes a stirring motor and a stirring paddle. The stirring paddle is connected to the power output shaft of the stirring motor and extends into the melting furnace. The nitrogen protection assembly includes a nitrogen cylinder, a gas supply pipe, and a pressure regulating valve. One end of the gas supply pipe is connected to the nitrogen cylinder, and the other end extends to the top of the melting furnace. The pressure regulating valve is installed on the gas supply pipe.
[0014] Based on the above technical solution, the embodiments of this application have at least the following beneficial effects: First, the inner wall of the stainless steel container is roughened by sandblasting. Then, pure lead material is put into the smelting furnace, the smelting furnace is sealed, and nitrogen protection components are activated to introduce nitrogen. The stainless steel container is placed in a preheating furnace for preheating. After preheating, the stainless steel container is transferred to the casting station. The casting nozzle of the quantitative casting mechanism is inserted into the container and its end is submerged below the liquid surface. The quantitative casting mechanism is activated for pouring. After pouring, the stainless steel container containing molten lead is transferred to a constant temperature settling chamber for constant temperature settling. After settling, the container is transferred to a cooling station for gradient cooling, and finally, a shaped lead body is obtained. Through the above steps, the sandblasting roughening treatment forms a mechanical locking structure, which makes the adhesion between the molten lead and the inner wall of the stainless steel container better after solidification; the preheating treatment of the stainless steel container reduces thermal shock and improves the fluidity of the molten lead; nitrogen protection reduces the oxidation reaction of the molten lead; constant temperature settling promotes the escape of bubbles in the molten lead; and gradient cooling controls shrinkage stress. Therefore, the lead-filling process provided in this application effectively solves the technical problems in the prior art, such as excessive lead oxide residue, incomplete filling, poor adhesion between lead body and container inner wall, and easy deformation of container. Attached Figure Description
[0015] The present application will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of a lead-filling device provided in an embodiment of this application.
[0016] Figure label: 10. Melting furnace; 20. Quantitative casting mechanism; 21. Metering pump; 22. Flow control valve; 30. Casting station; 40. Preheating furnace; 50. Constant temperature settling chamber; 60. Mixing assembly; 61. Mixing motor; 62. Mixing paddle; 70. Nitrogen protection assembly; 71. Nitrogen cylinder; 72. Gas supply pipe; 73. Gas pressure regulating valve; 80. Stainless steel container. Detailed Implementation
[0017] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0018] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0020] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0022] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0023] Lead, a metal with high density, strong corrosion resistance, and excellent radiation protection properties, is widely used in industrial production, radiation protection, and battery manufacturing. In actual production, molten lead is often poured into containers for molding. Stainless steel containers are the preferred material for lead casting due to their high temperature resistance, corrosion resistance, high structural strength, and good molding precision. However, the melting process of lead produces a large amount of oxide slag, which affects the density and properties of the cast lead. If the temperature is too low, the fluidity of the molten lead is insufficient, and defects such as incomplete filling, porosity, and cold shuts are likely to occur during casting. Without targeted pretreatment, the molten lead does not adhere well to the inner wall of the stainless steel container, and the lead easily separates from the inner wall of the container after cooling. Furthermore, uneven heating of the container can easily cause deformation, affecting the reusability of the container and the casting precision.
[0024] This application provides a lead-filling process, including the following steps: Roughening process: Select a high-temperature resistant stainless steel container and roughen the inner wall of the stainless steel container by sandblasting. This step, by roughening the inner wall of the stainless steel container by sandblasting, forms a micro-uneven structure on the inner wall, increasing the surface area and mechanical locking force of the inner wall.
[0025] In practice, 80-120 mesh quartz sand is used as the blasting medium, and the blasting pressure is controlled at 0.4-0.6 MPa, resulting in a container inner wall roughness Ra of 6.3-12.5 μm. These blasting parameters achieve effective roughness without excessively damaging the container inner wall and causing stress concentration. This roughening process ensures that the molten lead forms a good mechanical interlock with the container inner wall during pouring, effectively preventing the lead from separating from the container inner wall after cooling.
[0026] Preheating Step: The stainless steel container is placed in a preheating furnace for preheating. Specifically, the sandblasted stainless steel container is placed inside the preheating furnace, and the temperature control module of the preheating furnace is activated. The furnace temperature is gradually increased to 280℃-0℃, and held at this temperature for 20-30 minutes. The purpose of the preheating step is to avoid severe thermal shock when the high-temperature molten lead is poured into the room-temperature container, which could cause the container to deform. The preheated container maintains the good fluidity of the molten lead, allowing it to spread evenly within the container and improving the filling density. Through this preheating step, the stainless steel container is heated evenly, significantly reducing the thermal stress on the container during the pouring process.
[0027] Melting Step: Pure lead material is added to the melting furnace, the furnace is sealed, and nitrogen is introduced as a protective gas. The furnace is heated until the lead material is completely melted. Specifically, pure lead material is selected and added to the furnace chamber, which is then sealed. The nitrogen protection system is activated, and nitrogen is introduced into the top of the furnace through a gas supply pipe. The nitrogen effectively isolates oxygen by expelling air from the furnace. The nitrogen flow rate is controlled at 5-8 L / min, which provides an effective protective atmosphere without causing surface fluctuations or excessive heat loss due to excessive gas flow. Once the nitrogen protective atmosphere is established, the furnace heating system is activated, gradually raising the furnace temperature to 450℃-520℃. The lead material is heated to this temperature until completely melted and held for 10-15 minutes. Simultaneously, the stirring system is activated during this melting step, using a stirring device to slowly agitate the molten lead at a speed of 30-50 r / min. The stirring paddle of the stirring device extends into the molten lead and rotates at a constant speed under the drive of the stirring motor, promoting the convection of the molten lead, accelerating the melting of the lead material, and making the temperature and composition inside the molten lead more uniform.
[0028] Pouring Procedure: The preheated stainless steel container is fixed at the pouring station. A quantitative pouring mechanism slowly pours molten lead into the stainless steel container through a guide channel, ensuring the end of the guide channel remains submerged below the surface of the molten lead during the pouring process. Specifically, the preheated stainless steel container is removed from the preheating furnace 40 and placed at the pouring station, secured firmly with a stainless steel container clamp. Then, the quantitative pouring mechanism is activated, and the guide channel at the furnace outlet guides the molten lead to the pouring port of the quantitative pouring mechanism. The quantitative pouring mechanism controls the pouring flow rate of the molten lead at 0.8-1.5 L / min, slowly pouring the molten lead into the stainless steel container. During the pouring process, the end of the guide channel remains submerged below the surface of the poured molten lead in the container. Controlling the pouring flow rate at 0.8-1.5 L / min avoids both excessively high flow rates that cause lead molten metal to tumble and entrap air, resulting in porosity, and excessively low flow rates that cause lead molten metal to cool too quickly in the guide channel, reducing its fluidity. With the end of the guide channel submerged below the lead molten metal surface, this pouring method effectively reduces the contact between lead molten metal and air during pouring, significantly decreasing the introduction of oxide slag and the formation of porosity.
[0029] Settling Step: After pouring, transfer the stainless steel container containing molten lead to a constant-temperature settling chamber and let it stand for 15-20 minutes. Specifically, after pouring, quickly transfer the stainless steel container containing molten lead to the constant-temperature settling chamber. The constant-temperature settling chamber can stably control the temperature inside the chamber at 260℃-290℃. Under this temperature condition, the stainless steel container containing molten lead is left to stand for 15-20 minutes. Constant-temperature settling allows sufficient time for tiny air bubbles that may have been generated or introduced during the pouring process to rise and escape, further improving the density of the lead body. Constant-temperature settling also allows the molten lead to settle naturally in the stainless steel container, with the denser lead settling at the bottom and the less dense oxide slag rising to the surface, improving the purity of the final shaped lead body. The constant temperature control during the settling process avoids thermal stress caused by excessive internal and external temperature differences under natural cooling conditions, laying the foundation for subsequent gradient cooling. After settling, the internal temperature field of the molten lead is more uniform, effectively reducing shrinkage stress caused by uneven temperature.
[0030] Cooling Steps: A gradient cooling method is adopted. First, natural cooling lowers the temperature to 180℃, then circulating cold air is introduced to accelerate cooling to room temperature, completing the molding of the lead body within the stainless steel container. In practice, the stainless steel container containing molten lead, after undergoing constant-temperature settling, is removed from the settling chamber and placed on the cooling station. The first stage of natural cooling is performed: the container is allowed to dissipate heat naturally at room temperature, with the molten lead temperature gradually decreasing from 260℃-290℃ to 180℃. Once the molten lead temperature reaches 180℃, the circulating cold air system is activated, introducing circulating cold air at a speed of 2-3 m / s to force convection cooling of the container, accelerating the cooling of the lead body to room temperature.
[0031] The first stage, natural cooling, allows the molten lead to slowly cool within a relatively high temperature range (260℃-180℃). This slow cooling allows the lead to fully shrink, while the stainless steel container also shrinks slowly as the temperature decreases. The synchronized shrinkage rates of both effectively reduce the shrinkage stress between the lead and the container's inner wall, preventing cracking or detachment. Once the lead has completely solidified, the second stage uses circulating cold air to accelerate cooling, rapidly reducing the lead temperature from 180℃ to room temperature. At this stage, the lead is already in a solid state, and rapid cooling does not affect the molding quality; instead, it shortens the production cycle and improves efficiency.
[0032] Through the above steps, sandblasting roughening treatment forms a mechanically interlocking structure, resulting in better adhesion between the solidified molten lead and the inner wall of the stainless steel container; preheating the stainless steel container reduces thermal shock and improves the fluidity of the molten lead; nitrogen protection reduces the oxidation reaction of the molten lead; constant temperature settling promotes the escape of air bubbles from the molten lead; and gradient cooling controls shrinkage stress. Therefore, the lead-filling process provided in this application effectively solves the technical problems in the prior art, such as excessive molten lead oxide slag, incomplete filling, poor adhesion between the lead body and the inner wall of the container, and easy deformation of the container.
[0033] Reference Figure 1 This application also provides a lead-filling device, which includes: a smelting furnace 10, a quantitative casting mechanism 20, a casting station 30, a preheating furnace 40, and a constant-temperature settling chamber 50. The smelting furnace 10 is equipped with a heating component for heating and melting the lead material inside the furnace. The discharge end of the smelting furnace 10 is connected to the quantitative casting mechanism 20 via a guide channel.
[0034] A clamp 31 is provided on the pouring station 30. The clamp 31 is used to firmly position the preheated stainless steel container 80 to prevent the container from shifting or tilting during the pouring process. A leveling adjustment component is provided below the clamp 31. The leveling adjustment component includes a handwheel. The operator can precisely adjust the horizontal position of the clamp 31 by rotating the handwheel to ensure that the lead liquid flows evenly into the center of the container during pouring, and avoids uneven flow that could cause one side of the container to overheat or fill unevenly.
[0035] The preheating furnace 40 and the constant-temperature settling chamber 50 are respectively located on both sides of the casting station 30, and both are equipped with temperature control modules. The temperature control modules include temperature sensors, PID controllers, and heating actuators, enabling precise control of the internal temperature of the preheating furnace 40 and the constant-temperature settling chamber 50 within a set range. The preheating furnace 40 is used to preheat the stainless steel containers 80; it has internal trays or racks and can accommodate multiple stainless steel containers 80 for batch preheating simultaneously. The constant-temperature settling chamber 50 is used to maintain a constant temperature and settling temperature for the stainless steel containers 80 containing molten lead after casting; it also has internal trays and insulation layers.
[0036] The lead-filling device in this embodiment also includes a stirring assembly 60. The stirring assembly 60 includes a stirring motor 61 and a stirring paddle 62. The stirring paddle 62 is connected to the power output shaft of the stirring motor 61 and extends into the smelting furnace 10. The stirring motor 61 can be mounted on the top cover plate of the smelting furnace 10, and the output shaft of the stirring motor 61 passes through the cover plate and is connected to the stirring paddle 62. The stirring paddle 62 can be a three-bladed propeller.
[0037] The lead filling device in this embodiment also includes a nitrogen protection assembly 70. The nitrogen protection assembly 70 includes a nitrogen cylinder 71, a gas supply pipe 72, and a pressure regulating valve 73. One end of the gas supply pipe 72 is connected to the outlet of the nitrogen cylinder 71, and the other end extends to the top of the smelting furnace 10. A gas distributor (not shown in the figure) can be installed at the end of the gas supply pipe 72 to ensure uniform distribution of nitrogen on the surface of the molten lead. The pressure regulating valve 73 is installed on the gas supply pipe 72 and is used to regulate the nitrogen flow rate. The pressure regulating valve 73 can be a mass flow controller, capable of precisely controlling the nitrogen flow rate within the range of 5-8 L / min.
[0038] The clamp used to fix the stainless steel container 80 adopts an elastic clamping structure, which is suitable for stainless steel containers 80 of different specifications. The leveling component is an adjustable support foot that works with a level to ensure that the container is in a horizontal state when being poured.
[0039] Both the preheating furnace 40 and the constant temperature settling chamber 50 are equipped with electric heating tubes and temperature sensors. The temperature control module adopts PLC intelligent control, with a temperature control accuracy of ±5℃, achieving precise temperature control.
[0040] In this embodiment of the lead-filling device, the quantitative casting mechanism 20 includes a metering pump 21, a flow control valve 22, and a guide channel. The inner wall of the guide channel is coated with a high-temperature resistant heat-insulating coating, and the end of the guide channel is provided with an anti-splash guide nozzle to ensure that the molten lead flows smoothly into the stainless steel container 80. The casting nozzle is connected to the discharge end of the guide channel.
[0041] In this embodiment, the lead-filling device first adds pure lead material to the smelting furnace 10, seals the furnace, and activates the nitrogen protection component 70 to introduce nitrogen gas. The heating and stirring components 60 are then activated for melting. Simultaneously, a stainless steel container 80 is placed in the preheating furnace 40 for preheating. After preheating, the stainless steel container 80 is transferred to the casting station 30 and fixed with the fixing clamp 31. The container position is adjusted using the leveling component to keep it level. The casting nozzle of the quantitative casting mechanism 20 is inserted into the container, with its end submerged below the liquid surface. The quantitative casting mechanism 20 is then activated to pour the lead at a set flow rate. After pouring, the stainless steel container 80 containing the molten lead is transferred to a constant-temperature settling chamber 50 for constant-temperature settling. After settling, the container is transferred to a cooling station for gradient cooling, ultimately obtaining the shaped lead body.
[0042] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.
Claims
1. A lead-filling process, characterized in that, Includes the following steps: Roughening process: Select a high-temperature resistant stainless steel container and roughen the inner wall of the stainless steel container by sandblasting. Preheating step: Place the stainless steel container in a preheating oven for preheating; Melting step: Pure lead material is put into the melting furnace, the melting furnace is sealed and nitrogen is introduced as a protective gas, and heated until the lead material is completely melted; Pouring steps: Fix the preheated stainless steel container at the pouring station, and use a quantitative pouring mechanism to slowly pour molten lead into the stainless steel container through the guide channel. During the pouring process, the end of the guide channel is submerged below the surface of the molten lead. Settling step: After pouring, transfer the stainless steel container containing the lead liquid into a constant temperature settling chamber and let it stand for 15-20 minutes. Cooling steps: Gradient cooling is adopted. First, the temperature is naturally cooled to 180°C, and then circulating cold air is introduced to accelerate the cooling to room temperature, thus completing the molding of the lead body in the stainless steel container.
2. The lead-filling process according to claim 1, characterized in that: In the roughening process, the sandblasting roughening treatment uses 80-120 mesh quartz sand and a sandblasting pressure of 0.4-0.6 MPa to make the roughness Ra of the inner wall of the container reach 6.3-12.5 μm.
3. The lead-filling process according to claim 1, characterized in that: In the preheating step, the stainless steel container is placed in a preheating furnace and heated to 280℃-320℃, and kept at that temperature for 20-30 minutes.
4. The lead-filling process according to claim 1, characterized in that: During the melting step, the flow rate of nitrogen protective gas introduced into the melting furnace is 5-8 L / min.
5. The lead-filling process according to claim 4, characterized in that: In the melting step, the melting temperature is controlled at 450℃-520℃, and the lead material is heated until it is completely melted. The temperature is maintained for 10-15 minutes, while the molten lead is stirred at a speed of 30-50 r / min using a stirring device.
6. The lead-filling process according to claim 1, characterized in that: In the pouring step, when pouring molten lead into the stainless steel container, the pouring flow rate is controlled at 0.8-1.5 L / min.
7. The lead-filling process according to claim 1, characterized in that: During the settling step, the stainless steel container containing the lead liquid is kept at a constant temperature of 260℃-290℃.
8. The lead-filling process according to claim 1, characterized in that: In the cooling step, the air velocity of the circulating cold air is 2-3 m / s.
9. A lead-filling device, characterized in that, include: The system includes a smelting furnace, a quantitative casting mechanism, a casting station, a preheating furnace, and a constant-temperature settling chamber. The smelting furnace is equipped with a heating component inside, and its discharge end is connected to the quantitative casting mechanism via a guide channel. The casting station is equipped with a clamp, and a horizontal adjustment component is installed below the clamp. The preheating furnace and the constant-temperature settling chamber are respectively located on both sides of the casting station, and both the preheating furnace and the constant-temperature settling chamber are equipped with a temperature control module. The preheating furnace is used to preheat stainless steel containers.
10. The lead-filling device according to claim 9, characterized in that: It also includes a stirring assembly, which includes a stirring motor and a stirring paddle. The stirring paddle is connected to the power output shaft of the stirring motor and extends into the melting furnace. The nitrogen protection assembly includes a nitrogen cylinder, a gas supply pipe and a pressure regulating valve. One end of the gas supply pipe is connected to the nitrogen cylinder, and the other end extends to the top of the melting furnace. The pressure regulating valve is installed on the gas supply pipe.