Stainless steel wire preheating annealing device

Abstract

The utility model relates to a stainless steel wire preheating annealing device which comprises a preheating furnace, an annealing furnace and a transition heating assembly, the transition heating assembly is arranged between the preheating furnace and the annealing furnace, the transition heating assembly comprises a communicating shell, a fan and a heater, one end of the communicating shell is communicated with an outlet of the preheating furnace, and the other end of the communicating shell is communicated with the annealing furnace. The other end of the communicating shell is communicated with an inlet of the annealing furnace, an air inlet pipe is arranged on the bottom surface of the communicating shell, an air outlet pipe is arranged on the top surface of the communicating shell, an air outlet of the fan is communicated with the air inlet pipe, the heater is arranged in the air inlet pipe and used for heating air entering the communicating shell, and a filter screen is arranged at an air inlet of the fan. According to the transition heating assembly, the space between the preheating furnace and the annealing furnace is closed, the stainless steel wires are always in a dust-free environment in an air blowing mode, and the problem that the stainless steel wires are contaminated by dust in an existing preheating annealing process is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of stainless steel wire production technology, and more specifically, to a stainless steel wire preheating and annealing device. Background Technology

[0002] The production of stainless steel wire is a precise process involving multiple steps, including surface pretreatment, drawing, heat treatment, and surface finishing. Pickling and annealing is a core step in cold-rolled stainless steel production, combining heat treatment with surface treatment to eliminate work hardening and improve corrosion resistance. After pickling, the oxide layer and dust impurities on the surface of the stainless steel wire are removed, and it then enters the annealing process. Generally, stainless steel wire needs to be preheated before annealing; however, the distance between the preheating furnace and the annealing furnace is relatively large, making the stainless steel wire susceptible to re-contamination by dust and impurities, which can affect the annealing effect. Therefore, this invention proposes a novel preheating and annealing device for stainless steel wire to solve the above problems. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a stainless steel wire preheating and annealing device. The transition heating component seals the space between the preheating furnace and the annealing furnace, and the stainless steel wire is kept in a near-dust-free environment by means of air blowing, which effectively solves the problem of stainless steel wire being contaminated with dust in the existing preheating and annealing process.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A stainless steel wire preheating and annealing device includes a preheating furnace, an annealing furnace, and a transition heating component. The transition heating component is located between the preheating furnace and the annealing furnace. The transition heating component includes a connecting shell, a fan, and a heater. One end of the connecting shell is connected to the outlet of the preheating furnace, and the other end of the connecting shell is connected to the inlet of the annealing furnace. An air inlet pipe is provided on the bottom surface of the connecting shell, and an air outlet pipe is provided on the top surface of the connecting shell. The air outlet of the fan is connected to the air inlet pipe. The heater is located inside the air inlet pipe to heat the air entering the connecting shell. A filter screen is provided at the air inlet of the fan.

[0006] In one embodiment, the connecting housing is further provided with a connecting pipe, one end of which passes through the air inlet pipe, and the part of the connecting pipe inside the air inlet pipe is located between the fan and the heater, and the other end of the connecting pipe is connected to the air outlet pipe.

[0007] In one embodiment, heat exchange fins are provided on the outer wall of the portion of the connecting pipe inside the air inlet pipe to improve heat exchange efficiency.

[0008] In one embodiment, the portion of the connecting pipe inside the air inlet pipe is bent to form a multi-layer structure, thereby improving the heat exchange efficiency between the blown-out hot air and the blown-in cold air.

[0009] In one embodiment, a temperature sensor is provided inside the communicating housing to detect the temperature of the air inside the communicating housing.

[0010] In one embodiment, the heater is a set of resistance wires.

[0011] In one embodiment, the heating temperature of the heater is the same as the heating temperature of the preheating furnace, or the heating temperature of the heater is 5-10°C lower than the heating temperature of the preheating furnace.

[0012] In summary, this utility model has the following beneficial effects:

[0013] The transition heating component of this utility model seals the space between the preheating furnace and the annealing furnace, and keeps the stainless steel wire in a near-dust-free environment by blowing air. A filter screen is installed at the air inlet of the blower to prevent dust from entering the air connected to the shell. The heater heats the blown air to prevent the stainless steel wire from cooling rapidly, effectively solving the problem of dust contamination of stainless steel wire in the existing preheating and annealing process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the present invention;

[0015] Figure 2 This is a schematic diagram showing the bending of the connecting pipe inside the air inlet pipe to form a multi-layered structure.

[0016] In the diagram: 1. Preheating furnace, 2. Annealing furnace, 3. Connecting shell, 4. Fan, 5. Inlet pipe, 6. Outlet pipe, 7. Heater, 8. Temperature sensor, 9. Connecting pipe. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] It is worth noting that the directional terms such as "up" and "down" used in this article are all relative to the perspective of the attached figures and are only for the purpose of description. They should not be interpreted as limitations on the technical solutions.

[0019] like Figure 1-2As shown, this utility model proposes a stainless steel wire preheating and annealing device, including a preheating furnace 1, an annealing furnace 2, and a transition heating component. The transition heating component is disposed between the preheating furnace 1 and the annealing furnace 2. The transition heating component includes a connecting shell 3, a fan 4, and a heater 7. One end of the connecting shell 3 is connected to the outlet of the preheating furnace 1, and the other end of the connecting shell 3 is connected to the inlet of the annealing furnace 2. An air inlet pipe 5 is provided on the bottom surface of the connecting shell 3, and an air outlet pipe 6 is provided on the top surface of the connecting shell 3. The air outlet of the fan 4 is connected to the air inlet pipe 5. The heater 7 is disposed inside the air inlet pipe 5 to heat the air entering the connecting shell 3. A filter screen is provided at the air inlet of the fan 4.

[0020] In existing preheating and annealing processes, stainless steel wire is first pickled before entering preheating furnace 1 for heating, and then entering annealing furnace 2 for annealing. While the surface of the stainless steel wire is completely clean after pickling, there is still a distance between the preheating furnace 1 and annealing furnace 2. Since the production environment cannot guarantee complete dust-free conditions, there is still a risk of the stainless steel wire picking up dust during its movement. The preheating and annealing device of this invention effectively solves this problem. The transition heating component seals the space between preheating furnace 1 and annealing furnace 2, and uses forced air to keep the stainless steel wire in a near-dust-free environment. A filter screen is installed at the air inlet of the blower 4 to prevent dust from entering the air connected to the housing 3. The heater 7 heats the blown air, preventing rapid cooling of the stainless steel wire, effectively solving the problem of dust contamination of the stainless steel wire in existing preheating and annealing processes.

[0021] Furthermore, the connecting housing 3 is also provided with a connecting pipe 9. One end of the connecting pipe 9 passes through the air inlet pipe 5, and the portion of the connecting pipe 9 located inside the air inlet pipe 5 is between the fan 4 and the heater 7. The other end of the connecting pipe 9 is connected to the air outlet pipe 6. Figure 1 As shown, the connecting pipe 9 first passes the hot air blown out of the housing 3 through the air inlet pipe 5 to exchange heat with the newly blown air before it is discharged, maximizing the recovery of heat.

[0022] Furthermore, heat exchange fins are installed on the outer wall of the part of the connecting pipe 9 inside the air inlet pipe 5 to improve heat exchange efficiency.

[0023] Furthermore, the portion of the connecting pipe 9 within the air inlet pipe 5 is bent to form a multi-layered structure, such as... Figure 2 As shown, this improves the heat exchange efficiency between the blown-out hot air and the blown-in cold air. It is easy to understand that this multi-layer structure can be a horizontally arranged multi-layer structure or a vertically arranged multi-layer structure. Preferably, the multi-layer structure is formed by bending the connecting pipe 9 in a horizontal plane and arranging it along the horizontal cross-section of the air inlet pipe 5 to increase the contact area with the incoming air.

[0024] Furthermore, a temperature sensor 8 is installed inside the connecting housing 3 to detect the temperature of the air inside the housing 3. It is easy to understand that when the temperature sensor 8 detects that the temperature has reached a preset value, the heater 7 stops heating. Combined with the connection pipe 9, this reduces energy consumption.

[0025] Furthermore, heater 7 consists of multiple sets of resistance wires.

[0026] In this invention, the fan 4, temperature sensor 8, and heater 7 are all controlled by a control device, which can be an existing PLC controller. The temperature sensor 8 detects the degree of air heating and stops heating when the required air temperature is reached. Preferably, the heating temperature of the heater 7 is the same as that of the preheating furnace 1, or the heating temperature of the heater 7 is 5-10°C lower than that of the preheating furnace 1. That is, the transition heating component is equivalent to an extension of the preheating furnace 1, preventing the stainless steel wire surface from oxidizing again and forming an oxide layer. The transition heating component ensures the cleanliness of the stainless steel wire surface and guarantees the subsequent annealing effect.

[0027] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A preheating and annealing device for stainless steel wire, characterized in that, It includes a preheating furnace (1), an annealing furnace (2) and a transition heating component. The transition heating component is located between the preheating furnace (1) and the annealing furnace (2). The transition heating component includes a connecting shell (3), a fan (4) and a heater (7). One end of the connecting shell (3) is connected to the outlet of the preheating furnace (1), and the other end of the connecting shell (3) is connected to the inlet of the annealing furnace (2). An air inlet pipe (5) is provided on the bottom surface of the connecting shell (3), and an air outlet pipe (6) is provided on the top surface of the connecting shell (3). The air outlet of the fan (4) is connected to the air inlet pipe (5). The heater (7) is located inside the air inlet pipe (5) to heat the air entering the connecting shell (3). A filter screen is provided at the air inlet of the fan (4).

2. The stainless steel wire preheating and annealing device as described in claim 1, characterized in that, The connecting shell (3) is also provided with a connecting pipe (9), one end of which passes through the air inlet pipe (5), and the part of the connecting pipe (9) located inside the air inlet pipe (5) is between the fan (4) and the heater (7), and the other end of the connecting pipe (9) is connected to the air outlet pipe (6).

3. The stainless steel wire preheating and annealing device as described in claim 2, characterized in that, Heat exchange fins are provided on the outer wall of the part of the connecting pipe (9) inside the air inlet pipe (5) to improve heat exchange efficiency.

4. The stainless steel wire preheating and annealing device as described in claim 2 or 3, characterized in that, The connecting pipe (9) is bent inside the air inlet pipe (5) to form a multi-layer structure, which improves the heat exchange efficiency between the blown hot air and the blown cold air.

5. The stainless steel wire preheating and annealing device as described in claim 2, characterized in that, A temperature sensor (8) is installed inside the connecting housing (3) to detect the temperature of the air inside the connecting housing (3).

6. The stainless steel wire preheating and annealing apparatus as described in claim 1, characterized in that, The heater (7) consists of multiple sets of resistance wires.

7. The stainless steel wire preheating and annealing device as described in claim 1, characterized in that, The heating temperature of the heater (7) is the same as that of the preheating furnace (1), or the heating temperature of the heater (7) is 5-10℃ lower than that of the preheating furnace (1).

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