Stainless steel wire production process and equipment

Abstract

The invention relates to a stainless steel wire production process and equipment. The equipment comprises a pickling device, a preheating annealing device and a straightening device, the pickling device comprises a pickling assembly and a washing assembly, the pickling assembly comprises a plurality of pickling pools and a plurality of transition rollers, a plurality of steel wire inlets of the pickling pools are vertically arranged, a plurality of steel wire outlets of the pickling pools are vertically arranged, the pickling pools are arranged side by side, one transition roller is arranged between every two adjacent pickling pools, and the transition rollers are vertically arranged. The steel wire outlet of the last pickling tank is connected with the steel wire inlet of the washing assembly; the preheating annealing device comprises a preheating furnace and an annealing furnace, and the straightening device is arranged between the washing assembly of the pickling device and the preheating furnace of the preheating annealing device. The stainless steel wires in the pickling pools are vertically arranged from top to bottom, the occupied area of the pickling pools is effectively reduced, the multiple pickling pools in the vertical state are arranged side by side, the pickling device is more compact in structure, and the occupied area of the whole equipment is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of stainless steel wire production, and more specifically, it relates to a production process and equipment for stainless steel wire. Background Art

[0002] The production of stainless steel wire is a precise process involving multiple procedures, including surface pretreatment, wire drawing forming, heat treatment, and surface finishing. Among them, the heat treatment procedure includes pickling, preheating, and annealing steps. Before annealing, the stainless steel wire needs to be pickled to remove oxides and impurities on the surface of the stainless steel wire, ensuring that the surface of the stainless steel wire is clean before entering the annealing furnace, and the stainless steel wire needs to be in a straight state. In the existing heat treatment procedure, the stainless steel wire moves forward in a straight state. Therefore, the corresponding equipment such as pickling, preheating, and annealing is arranged along the moving direction of the stainless steel wire. The floor area of the existing pickling system is related to the number of pickling tanks, and the pickling tanks are also arranged linearly back and forth. Moreover, the pickling system is connected to the subsequent annealing device, which results in a large overall floor area occupied by the heat treatment equipment, taking up too much space and being difficult to adjust. Based on this, the present invention proposes a new production process and equipment for stainless steel wire to solve the above problems. Summary of the Invention

[0003] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a production process and equipment for stainless steel wire. The stainless steel wire in the pickling tank is arranged vertically from top to bottom, effectively reducing the floor area of the pickling tank. Multiple pickling tanks in a vertical state are arranged side by side, and the pickling device structure is more compact, effectively reducing the overall floor area of the equipment.

[0004] The above technical purpose of the present invention is achieved through the following technical solutions: An equipment for producing stainless steel wire includes a pickling device, a preheating and annealing device, and a straightening device; The pickling device includes a pickling component and a water washing component. Among them, the pickling component includes multiple pickling tanks and multiple transition rollers. The multiple wire inlets of the pickling tank are arranged vertically, the multiple wire outlets of the pickling tank are arranged vertically, multiple pickling tanks are arranged side by side, a transition roller is arranged between adjacent pickling tanks, the transition roller is arranged vertically, and the height of the transition roller is the same as the height of the pickling tank. The wire outlet of the last pickling tank is connected to the wire inlet of the water washing component; Among them, the water washing component includes a water washing tank, vertical guiding rollers, turning rollers and horizontal guiding rollers. A plurality of wire inlets of the water washing tank are arranged vertically. The vertical guiding rollers are arranged vertically in the water washing tank and close to the wire inlets. A plurality of wire outlets of the water washing tank are arranged horizontally. The horizontal guiding rollers are arranged horizontally in the water washing tank and close to the wire outlets. A plurality of turning rollers are arranged between the vertical guiding rollers and the horizontal guiding rollers. The guiding rollers are inclined at 45°. The number of guiding rollers is the same as the number of wire inlets of the water washing tank. One guiding roller is correspondingly arranged for the height of each wire inlet. The axes of the plurality of guiding rollers are in a parallel state or on the same straight line; The preheating and annealing device includes a preheating furnace and an annealing furnace. The straightening device is arranged between the water washing component of the pickling device and the preheating furnace of the preheating and annealing device.

[0005] In one embodiment, the number of pickling tanks is an odd number.

[0006] In one embodiment, the number of wire inlets of the pickling tank ≤ 10.

[0007] In one embodiment, the turning roller is a V-shaped roller to prevent the stainless steel wire from slipping off the turning roller; The axes of the plurality of turning rollers are on the same straight line. An inclined fixed shaft is arranged in the water washing tank. The plurality of turning rollers are rotatably arranged on the inclined shaft.

[0008] In one embodiment, the straightening device includes a plurality of upper straightening rollers and a plurality of lower straightening rollers. The plurality of upper straightening rollers and the plurality of lower straightening rollers are arranged in a staggered manner.

[0009] In one embodiment, the straightening device further includes a dust-proof housing. The dust-proof housing is arranged between the pickling device and the preheating and annealing device to enclose the space between the pickling device and the preheating and annealing device. The upper straightening rollers and the lower straightening rollers are both arranged in the dust-proof housing.

[0010] In one embodiment, the preheating and annealing device includes a preheating furnace, an annealing furnace and a transition heating component. The transition heating component is arranged between the preheating furnace and the annealing furnace. The transition heating component includes a connecting housing, a blower and a heater. One end of the connecting housing is communicated with the outlet of the preheating furnace. The other end of the connecting housing is communicated with the inlet of the annealing furnace. An air inlet pipe is arranged on the bottom surface of the connecting housing. An air outlet pipe is arranged on the top surface of the connecting housing. The air outlet of the blower is communicated with the air inlet pipe. The heater is arranged in the air inlet pipe to heat the air entering the connecting housing. A filter screen is arranged at the air inlet of the blower.

[0011] In one embodiment, the connecting housing is further provided with a connecting pipe. One end of the connecting pipe penetrates through the air inlet pipe, and the part of the connecting pipe located in the air inlet pipe is between the blower and the heater. The other end of the connecting pipe is communicated with the air outlet pipe.

[0012] In one embodiment, heat exchange fins are provided on the outer wall of the part of the connecting pipe inside the air inlet pipe to improve the heat exchange efficiency.

[0013] In one embodiment, a temperature sensor is provided inside the communication housing for detecting the temperature of the air inside the communication housing.

[0014] A production process for stainless steel wires is as follows: S1. Multiple stainless steel wires are arranged vertically from top to bottom, enter the first pickling tank of the pickling device, and are turned by multiple transition rollers, and then enter multiple pickling tanks inside the pickling device in sequence for pickling; S2. After pickling is completed, multiple vertically arranged stainless steel wires enter the water washing tank of the pickling device and are turned into a horizontal arrangement inside the water washing tank; S3. After water washing is completed, multiple horizontally arranged stainless steel wires enter the straightening device for straightening to eliminate the bending of the stainless steel wires; S4. After straightening is completed, multiple stainless steel wires enter the preheating furnace for preheating, and then enter the annealing furnace for annealing treatment; During the process of the stainless steel wires leaving the preheating furnace and entering the annealing furnace, the stainless steel wires are in the transition heating assembly to isolate external dust and maintain the temperature of the stainless steel wires; S5. After annealing is completed, the stainless steel wires enter the subsequent processes to form stainless steel wire products.

[0015] In summary, the present invention has the following beneficial effects: The present invention improves the structure of the pickling device with the largest floor area, so that the stainless steel wires in the pickling tank are vertically arranged from top to bottom, effectively reducing the overall floor area of the pickling tank. Multiple vertically arranged pickling tanks are arranged side by side, and the structure of the pickling device is more compact, effectively reducing the overall floor area of the pickling device and the preheating and annealing device. The straightening device eliminates the bending of the stainless steel wires output by the pickling device and has no influence on the subsequent annealing treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall schematic diagram of the present invention; Figure 2 is the position schematic diagram of the vertical guide roller, turning roller, horizontal guide roller and stainless steel wire inside the water washing tank; Figure 3 is the schematic diagram of the preheating and annealing device of the present invention.

[0017] In the figure: 1. Pickling device, 11. Pickling assembly, 111. Pickling tank, 112. Transition roller, 12. Water washing assembly, 121. Water washing tank, 122. Vertical guide roller, 123. Turning roller, 124. Horizontal guide roller; 2. Straightening device, 21. Upper straightening roller, 22. Lower straightening roller; 3. Preheating and annealing device, 31. Preheating furnace, 32. Annealing furnace, 33. Connecting housing, 34. Fan, 35. Air inlet pipe, 36. Air outlet pipe, 37. Heater, 38. Temperature sensor, 39. Connecting pipe. Specific implementation mode

[0018] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0019] It should be noted that the orientation terms such as "upper" and "lower" involved in this article are determined relative to the perspective of the accompanying drawings, and are only for convenience of description and cannot be construed as a limitation to the technical solution.

[0020] As Figures 1-3 shown, the present invention provides a device for producing stainless steel wires, including a pickling device 1, a straightening device 2 and a preheating and annealing device 3. After the stainless steel wires enter the pickling device 1 for pickling, they pass through the straightening device 2 and then enter the preheating and annealing device 3 for annealing treatment.

[0021] Among them, the pickling device 1 includes a pickling component 11 and a water washing component 12. The outlet of the pickling component 11 is connected to the inlet of the water washing component 12. After pickling, the stainless steel wires are further washed with water to remove the pickling solution on the stainless steel wires.

[0022] Among them, the pickling component 11 includes a plurality of pickling pools 111 and a plurality of transition rollers 112. A plurality of wire inlets of the pickling pool 111 are arranged vertically, a plurality of wire outlets of the pickling pool 111 are arranged vertically, a plurality of pickling pools 111 are arranged side by side, and a transition roller 112 is arranged between adjacent pickling pools 111. The transition roller 112 is arranged vertically, and the height of the transition roller 112 is the same as the height of the pickling pool 111.

[0023] The stainless steel wires in the pickling pool 111 of the present invention are arranged vertically from top to bottom instead of horizontally, effectively reducing the floor area of the pickling pool 111. Further, the present invention arranges a plurality of vertically arranged pickling pools 111 side by side, effectively reducing the overall floor area of the pickling pool 111. It is easy to understand that in the existing conventional pickling pool 111 system, a plurality of pickling pools 111 are arranged in front and back, and the stainless steel wires pass through a plurality of pickling pools 111 in a straight line state for cleaning. In the present invention, a plurality of pickling pools 111 are distributed side by side left and right, and the stainless steel wires are turned by the transition rollers 112. The pickling component 11 as a whole is more compact and reduces the floor area.

[0024] The pickling assembly 11 arranged side by side in the present invention can be regarded as a pickling tank 111 with a relatively large depth. The structure of the pickling tank 111 is only different from that of the existing conventional pickling tank 111 in the arrangement mode of the steel wire inlet and outlet. It is easy to understand that in the conventional pickling device 1, spaces for discharging the acid solution are also provided before and after the pickling tank 111. The acid solution in the pickling tank 111 will leak out through the steel wire inlet and outlet. The spaces for discharging the acid solution before and after the pickling tank 111 play a role in recovering the acid solution, and at the same time, it also avoids the situation that the acid solution leaks out of the pickling device 1. Similarly, the present invention has a similar structure. Since this structure is not the innovation point of the present invention, the present invention will not elaborate further.

[0025] Compared with the existing device, the single pickling tank 111 of the present invention also has the advantage of a narrow-shaped design. Since multiple stainless steel wires are arranged from top to bottom in a single pickling tank 111, and due to the small diameter of the stainless steel wires, when multiple stainless steel wires are arranged vertically, a relatively small gap arrangement can also be adopted. Therefore, the thickness of the single pickling tank 111 of the present invention can be close to the thickness of the existing pickling device 1.

[0026] Preferably, the number of pickling tanks 111 is an odd number, such as one, three, five, etc. When the number of pickling tanks 111 is odd, the overall steel wire inlet and steel wire outlet of the pickling assembly 11 are not on the same surface, which is convenient for cooperation with the subsequent water washing assembly 12.

[0027] Preferably, the number of steel wire inlets of the pickling tank 111 ≤ 10. It is easy to understand that the number of steel wire inlets and steel wire outlets of the pickling tank 111 is the same, and the number of steel wire inlets and steel wire outlets of the subsequent water washing assembly 12 is also the same as the number of steel wire inlets of the pickling tank 111. The details will not be elaborated further below.

[0028] The water washing assembly 12 includes a water washing tank 121, a vertical guiding roller 122, a turning roller 123, and a horizontal guiding roller 124. The multiple steel wire inlets of the water washing tank 121 are arranged vertically. The vertical guiding roller 122 is arranged vertically in the water washing tank 121 and close to the steel wire inlets. The multiple steel wire outlets of the water washing tank 121 are arranged horizontally. The horizontal guiding roller 124 is arranged horizontally in the water washing tank 121 and close to the steel wire outlets. Multiple turning rollers 123 are arranged between the vertical guiding roller 122 and the horizontal guiding roller 124. The guiding rollers are inclined at 45°. The number of guiding rollers is the same as the number of steel wire inlets of the water washing tank 121. One guiding roller is correspondingly arranged for the height of each steel wire inlet. The axes of the multiple guiding rollers are in a parallel state or on the same straight line.

[0029] Such as Figures 1-2As shown, multiple parallel stainless steel wires are in a vertically arranged state in the pickling tank 111. After the stainless steel wires enter the water washing tank 121, they are transformed into a horizontally arranged state under the action of the vertical guide roller 122, the turning roller 123, and the horizontal guide roller 124, which is adapted to the subsequent preheating and annealing process. It is easy to understand that after multiple stainless steel wires enter the water washing tank 121, they first contact the vertical guide roller 122, and then each stainless steel wire bypasses the bottom surface of the corresponding turning roller 123. At this time, the multiple stainless steel wires are transformed from a vertically arranged state from top to bottom to a horizontally arranged state, but there is still a height difference between the multiple stainless steel wires. Then the multiple stainless steel wires bypass the horizontal guide roller 124, and thus the height difference between the multiple stainless steel wires is eliminated, and they are in a horizontally arranged state.

[0030] Preferably, the turning roller 123 is a V-shaped roller to prevent the stainless steel wire from slipping off the turning roller 123.

[0031] Preferably, the axes of the multiple turning rollers 123 are on the same straight line. An inclined fixed shaft is arranged in the water washing tank 121, and the multiple turning rollers 123 are rotatably arranged on the inclined shaft.

[0032] Preferably, to facilitate the contact between the stainless steel wire and the vertical guide roller 122 after entering the water washing tank 121, the wire inlet of the water washing tank 121 is located on one side of the inlet surface of the water washing tank 121, and the vertical guide roller 122 is on the inner side of the wire inlet. This setting method makes the stainless steel wire entering the water washing tank 121 need to pass through the vertical guide roller 122 and then turn to contact the turning roller 123.

[0033] In the present invention, the connection manner between the pickling component 11 and the water washing component 12 is the same as the connection manner between the pickling part and the water washing part in the existing pickling device 1, and the present invention will not elaborate.

[0034] The straightening device 2 is connected to the pickling device 1, and its function is to straighten the stainless steel wire output by the pickling device 1. Since the stainless steel wire has been bent multiple times in the pickling device 1, in order to facilitate the subsequent preheating and annealing treatment, the stainless steel wire needs to be straightened.

[0035] The straightening device 2 includes multiple upper straightening rollers 21 and multiple lower straightening rollers 22. The multiple upper straightening rollers 21 and the multiple lower straightening rollers 22 are arranged in a staggered manner. For example, taking the upper straightening roller 21 as a reference, the lower straightening rollers 22 are respectively arranged below both sides of the upper straightening roller 21. The straightening method of the present invention is the same as the existing conventional straightening method, that is, when the stainless steel wire passes through the straightening device 2, the upper straightening roller 21 and the lower straightening roller 22 act on the stainless steel wire together to eliminate the bending of the stainless steel wire.

[0036] The straightening device 2 can be self-powered or non-powered. Since the stainless steel wire is always in a pulled state, preferably, the straightening device 2 of the present invention is non-powered.

[0037] Preferably, the number of upper straightening rollers 21 is four, and the number of lower straightening rollers 22 is four or five.

[0038] More preferably, the straightening device 2 further includes a dust-proof housing, which is arranged between the pickling device 1 and the preheating and annealing device 3, encloses the space between the pickling device 1 and the preheating and annealing device 3, and both the upper straightening rollers 21 and the lower straightening rollers 22 are arranged inside the dust-proof housing.

[0039] The preheating and annealing device 3 includes a preheating furnace 31, an annealing furnace 32 and a transition heating component. The transition heating component is arranged between the preheating furnace 31 and the annealing furnace 32. The transition heating component includes a connecting housing 33, a fan 34 and a heater 37. One end of the connecting housing 33 is communicated with the outlet of the preheating furnace 31, the other end of the connecting housing 33 is communicated with the inlet of the annealing furnace 32. An air inlet pipe 35 is arranged on the bottom surface of the connecting housing 33, an air outlet pipe 36 is arranged on the top surface of the connecting housing 33. The air outlet of the fan 34 is communicated with the air inlet pipe 35, and the heater 37 is arranged inside the air inlet pipe 35 to heat the air entering the connecting housing 33. A filter screen is arranged at the air inlet of the fan 34.

[0040] In the existing preheating and annealing process, the stainless steel wire first undergoes pickling and then enters the preheating furnace 31 for heating, and then enters the annealing furnace 32 for annealing treatment. After pickling, the surface of the stainless steel wire is completely clean. However, there is still a certain distance between the preheating furnace 31 and the annealing furnace 32. Since the production environment cannot ensure complete dust-free, there is still a risk that the stainless steel wire will be contaminated with more dust during the movement. The preheating and annealing device 3 of the present invention can effectively solve this problem. The transition heating component encloses the space between the preheating furnace 31 and the annealing furnace 32, and makes the stainless steel wire always in an environment close to dust-free by means of blowing air. A filter screen is arranged at the air inlet of the fan 34 to prevent the air blown into the connecting housing 33 from carrying dust, and the heater 37 heats the blown air to avoid the stainless steel wire from being quenched suddenly, effectively solving the problem that the stainless steel wire is contaminated with dust in the existing preheating and annealing process.

[0041] It should be noted that there are practical reasons why the space between the preheating furnace 31 and the annealing furnace 32 cannot be simply completely sealed. Firstly, the preheating furnace 31 and the annealing furnace 32 are two different devices. Secondly, during the production process, it may be necessary to replace the stainless steel wire with a new one frequently based on the production rhythm. If the space between the preheating furnace 31 and the annealing furnace 32 is completely sealed, the operation of replacing the stainless steel wire will not be possible. The transition heating component of the present invention is a detachable device. If only the space between the preheating furnace 31 and the annealing furnace 32 is enclosed instead of sealed, the dust problem is still difficult to solve during long-term production. The present invention realizes dust removal by filtering air and blowing air, and has a lower requirement for the production environment.

[0042] Furthermore, the connecting shell 33 is also provided with a connecting pipe 39. One end of the connecting pipe 39 penetrates the air inlet pipe 35, and the part of the connecting pipe 39 located inside the air inlet pipe 35 is between the fan 34 and the heater 37. The other end of the connecting pipe 39 is communicated with the air outlet pipe 36. As Figure 3 shown, the hot air blown out from the connecting shell 33 first passes through the air inlet pipe 35 through the connecting pipe 39, exchanges heat with the just-blow-in air, and then is discharged, maximizing the heat recovery.

[0043] Furthermore, heat exchange fins are arranged on the outer wall of the part of the connecting pipe 39 located inside the air inlet pipe 35 to improve the heat exchange efficiency.

[0044] Furthermore, a temperature sensor 38 is arranged inside the connecting shell 33 to detect the temperature of the air inside the connecting shell 33. It is easy to understand that when the temperature measured by the temperature sensor 38 reaches the preset value, the heater 37 stops heating. With the setting of the connecting pipe 39, the energy consumption can be reduced. Furthermore, the heater 37 is a multi-group resistance wire.

[0045] In the present invention, the fan 34, the temperature sensor 38, the heater 37, etc. are all controlled by a control device. The control device can be an existing PLC controller. The temperature sensor 38 detects the degree to which the air is heated, and stops heating when the air temperature reaches the requirement. Preferably, the heating temperature of the heater 37 is the same as the heating temperature of the preheating furnace 31, or the heating temperature of the heater 37 is 5 - 10 °C lower than the heating temperature of the preheating furnace 31. That is to say, the transition heating component is equivalent to an extension of the preheating furnace 31, and will not cause the surface of the stainless steel wire to be oxidized again to form an oxide layer. The transition heating component can ensure the cleanliness of the surface of the stainless steel wire and guarantee the subsequent annealing effect.

[0046] The present invention also proposes a production process for stainless steel wires, and the steps are as follows: S1. Multiple stainless steel wires are arranged from top to bottom, enter the first pickling tank 111 of the pickling device 1, and are turned by multiple transition rollers 112, and then enter multiple pickling tanks 111 in the pickling device 1 in sequence for pickling; S2. After pickling is completed, multiple vertically arranged stainless steel wires enter the water washing tank 121 of the pickling device 1 and are turned into a horizontal arrangement in the water washing tank 121; S3. After water washing is completed, multiple horizontally arranged stainless steel wires enter the straightening device 2 for straightening to eliminate the bending of the stainless steel wires; S4. After straightening is completed, multiple stainless steel wires enter the preheating furnace 31 for preheating, and then enter the annealing furnace 32 for annealing treatment; During the process that the stainless steel wire leaves the preheating furnace 31 and enters the annealing furnace 32, the stainless steel wire is in the transition heating component, isolating external dust and maintaining the temperature of the stainless steel wire; S5. After annealing is completed, the stainless steel wire enters the subsequent processes to produce stainless steel wire products.

[0047] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. An apparatus for producing stainless steel wire, characterized in that, It includes a pickling device (1), a preheating annealing device (3) and a straightening device (2); The pickling device (1) includes a pickling component (11) and a water washing component (12). Among them, the pickling component (11) includes a plurality of pickling tanks (111) and a plurality of transition rollers (112). The multiple wire inlets of the pickling tank (111) are arranged vertically, the multiple wire outlets of the pickling tank (111) are arranged vertically, the plurality of pickling tanks (111) are arranged side by side, and one transition roller (112) is arranged between adjacent pickling tanks (111). The transition roller (112) is arranged vertically, and the height of the transition roller (112) is the same as the height of the pickling tank (111). The wire outlet of the last pickling tank (111) is connected to the wire inlet of the water washing component (12); Among them, the water washing component (12) includes a water washing tank (121), a vertical guide roller (122), a turning roller (123) and a horizontal guide roller (124). The multiple wire inlets of the water washing tank (121) are arranged vertically. The vertical guide roller (122) is arranged vertically in the water washing tank (121) and close to the wire inlet. The multiple wire outlets of the water washing tank (121) are arranged horizontally. The horizontal guide roller (124) is arranged horizontally in the water washing tank (121) and close to the wire outlet. A plurality of turning rollers (123) are arranged between the vertical guide roller (122) and the horizontal guide roller (124). The guide rollers are inclined at 45°. The number of guide rollers is the same as the number of wire inlets of the water washing tank (121). One guide roller is correspondingly arranged at the height of each wire inlet. The axes of the plurality of guide rollers are in a parallel state or on the same straight line; The preheating annealing device (3) includes a preheating furnace (31) and an annealing furnace (32). The straightening device (2) is arranged between the water washing component (12) of the pickling device (1) and the preheating furnace (31) of the preheating annealing device (3).

2. The equipment for producing stainless steel wires according to claim 1, characterized in that, The number of pickling tanks (111) is an odd number.

3. The equipment for producing stainless steel wires as described in claim 1, characterized in that, The number of wire inlets of the pickling tank (111) ≤ 10.

4. The equipment for producing stainless steel wires according to claim 1, characterized in that, The turning roller (123) is a V-shaped roller to prevent the stainless steel wire from slipping off the turning roller (123); The axes of the plurality of turning rollers (123) are on the same straight line. An inclined fixed shaft is arranged in the water washing tank (121), and the plurality of turning rollers (123) are rotatably arranged on the inclined shaft.

5. The equipment for producing stainless steel wires according to any one of claims 1-4, characterized in that, The straightening device (2) includes a plurality of upper straightening rollers (21) and a plurality of lower straightening rollers (22). The plurality of upper straightening rollers (21) and the plurality of lower straightening rollers (22) are arranged in a staggered manner.

6. The equipment for producing stainless steel wires according to claim 5, characterized in that, The straightening device (2) further includes a dust-proof cover. The dust-proof cover is arranged between the pickling device (1) and the preheating annealing device (3) to enclose the space between the pickling device (1) and the preheating annealing device (3). The upper straightening rollers (21) and the lower straightening rollers (22) are both arranged in the dust-proof cover.

7. The equipment for producing stainless steel wires according to claim 5, characterized in that, The preheating and annealing device (3) includes a preheating furnace (31), an annealing furnace (32) and a transition heating assembly. The transition heating assembly is arranged between the preheating furnace (31) and the annealing furnace (32). The transition heating assembly includes a connecting shell (33), a blower (34) and a heater (37). One end of the connecting shell (33) is communicated with the outlet of the preheating furnace (31), and the other end of the connecting shell (33) is communicated with the inlet of the annealing furnace (32). An air inlet pipe (35) is arranged on the bottom surface of the connecting shell (33), and an air outlet pipe (36) is arranged on the top surface of the connecting shell (33). The air outlet of the blower (34) is communicated with the air inlet pipe (35), and the heater (37) is arranged in the air inlet pipe (35) to heat the air entering the connecting shell (33). A filter screen is arranged at the air inlet of the blower (34).

8. The equipment for producing stainless steel wires as claimed in claim 7, wherein, The connecting shell (33) is further provided with a connecting pipe (39). One end of the connecting pipe (39) penetrates through the air inlet pipe (35), and the part of the connecting pipe (39) located in the air inlet pipe (35) is between the blower (34) and the heater (37). The other end of the connecting pipe (39) is communicated with the air outlet pipe (36).

9. The equipment for producing stainless steel wires according to claim 7, characterized in that, A temperature sensor (38) is arranged in the connecting shell (33) for detecting the temperature of the air in the connecting shell (33).

10. A production process of stainless steel wire, characterized in that, The equipment applicable to the production of stainless steel wires as described in claim 7 is as follows: S1. Multiple stainless steel wires are arranged vertically from top to bottom, enter the first pickling tank (111) of the pickling device (1), and are turned by a plurality of transition rollers (112) and then enter a plurality of pickling tanks (111) in the pickling device (1) in sequence for pickling. S2. After pickling is completed, the multiple vertically arranged stainless steel wires enter the water washing tank (121) of the pickling device (1) and are turned into a horizontal arrangement in the water washing tank (121). S3. After water washing is completed, the multiple horizontally arranged stainless steel wires enter the straightening device (2) for straightening to eliminate the bending of the stainless steel wires. S4. After straightening is completed, the multiple stainless steel wires enter the preheating furnace (31) for preheating and then enter the annealing furnace (32) for annealing treatment. During the process that the stainless steel wires leave the preheating furnace (31) and enter the annealing furnace (32), the stainless steel wires are in the transition heating assembly to isolate external dust and maintain the temperature of the stainless steel wires. S5. After annealing is completed, the stainless steel wires enter the subsequent process to form stainless steel wire products.

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