Stainless steel annealing device

Abstract

The utility model belongs to the field of stainless steel processing, and particularly relates to a stainless steel annealing device which comprises a box body, the middle part of the box body is fixedly connected with a fan; the inner side wall of the box body is fixedly connected with a gas collecting cabin; the fan is communicated with the gas collecting cabin through a pipeline; a plurality of second fixing grooves are formed in the middle of the gas collecting cabin; a plurality of heating pipes are fixedly connected to the inner side wall of the gas collecting cabin; the middle part of the box body is communicated with an exhaust port; a plurality of fixing plates are fixedly connected to the inner side wall of the box body; the fixed plate is obliquely arranged; the fixing plate and the second fixing groove are correspondingly arranged; a plurality of first fixing grooves are formed in the middle of the fixing plate; the top of the fixing plate is fixedly connected with a fixing assembly. Through the cooperation effect of the fixing plate and the second fixing groove, the inclined fixing plate enables the heating nitrogen flowing out of the second fixing groove to heat the surface of the stainless steel more uniformly, and the situation that the stainless steel is heated unevenly due to uneven airflow distribution at the position of the fixing plate is reduced.

Description

Technical Field

[0001] The utility model relates to the field of stainless steel processing, in particular to a stainless steel annealing device. Background Art

[0002] Stainless steel is a corrosion-resistant alloy steel mainly composed of iron, chromium, nickel and other elements. According to different chemical compositions and performance characteristics, stainless steel can be divided into many types, such as duplex stainless steel, chromium-nickel stainless steel, chromium-manganese-nitrogen stainless steel, chromium-nickel-molybdenum stainless steel, etc.

[0003] Duplex stainless steel is a special type of stainless steel. In its microstructure, ferrite and austenite each account for about half, and it has the advantages of both austenitic and ferritic stainless steel. The processing flow of duplex stainless steel mainly includes the following steps: smelting, continuous casting, hot rolling, annealing, cold rolling, quenching, and surface treatment.

[0004] Existing duplex stainless steel is usually heated for a period of time before being cooled during annealing. It has been found in use and observation that when stainless steel is heated, the contact area with the heated airflow is uneven, resulting in uneven heating of the stainless steel surface and color difference, which reduces the annealing effect of the device on the stainless steel.

[0005] Therefore, a stainless steel annealing device is proposed to solve the above problems. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the utility model to solve its technical problems is: a stainless steel annealing device described in the utility model comprises a box body; a fan is fixedly connected to the middle part of the box body; an air collecting chamber is fixedly connected to the inner side wall of the box body; the fan and the air collecting chamber are connected through a pipeline; a plurality of second fixed grooves are opened in the middle part of the air collecting chamber; a plurality of heating pipes are fixedly connected to the inner side wall of the air collecting chamber; an exhaust port is connected to the middle part of the box body; a plurality of fixed plates are fixedly connected to the inner side wall of the box body; the fixed plate is inclined; the fixed plate and the second fixed groove are correspondingly arranged; a plurality of first fixed grooves are opened in the middle part of the fixed plate; a fixing assembly is fixedly connected to the top of the fixed plate; through the cooperation of the fixed plate and the second fixed groove, the inclined fixed plate makes the heated nitrogen flowing out of the second fixed groove heat the stainless steel surface more evenly, reduces the uneven heating caused by the uneven airflow distribution at the fixed plate, and improves the uniformity of the device heating the stainless steel.

[0008] Preferably, the fixing assembly includes a plurality of elastic rods; iron balls are fixedly connected between adjacent elastic rods; a connecting rod is fixedly connected between adjacent iron balls; a plurality of first guide plates are fixedly connected to the middle of the connecting rod; the first guide plate is an arc-shaped structure; a plurality of first circular holes are opened in the middle of the first guide plate; the first guide plate will be reset along with the connecting rod and squeeze the stainless steel surface, thereby increasing the airflow on the stainless steel surface, further increasing the contact area between the airflow and the stainless steel, and reducing the area of ​​uneven heating on the stainless steel surface.

[0009] Preferably, a plurality of rubber plates are fixedly connected to the bottom of the connecting rod; the rubber plates are arranged in an array; when the connecting rod moves, the connecting rod will also drive the rubber plates to move together, and the rubber plates will come into contact with the stainless steel when moving. Because the surface friction coefficient of the rubber plates is larger, when the rubber plates come into contact with the stainless steel, the contact area between the connecting rod and the stainless steel will be increased, thereby increasing the friction between the stainless steel and the connecting rod and improving the stability of the stainless steel during annealing.

[0010] Preferably, thermal insulation cotton is fixed to the middle part of the elastic rod; the thermal insulation cotton is located on the top of the fixed plate; when the heated airflow reaches the fixed plate, the elastic rod is also heated. At this time, because the thermal conductivity of the thermal insulation cotton is low, the heat exchange between the elastic rod and the airflow is reduced, the damage to the elastic rod caused by the heated airflow is reduced, and the service life of the elastic rod is extended.

[0011] Preferably, a plurality of elastic ropes are fixed to the inner wall of the air collecting cabin; sliding plates are estimated to be provided at the ends of adjacent elastic ropes; the sliding plates and the second fixed groove are slidably matched; through the cooperation of the elastic ropes and the sliding plates, the sliding plates will detach from the second fixed groove under the action of air pressure so that the airflow inside the air collecting cabin flows out from the second fixed groove, thereby increasing the contact time between the airflow inside the air collecting cabin and the heating tube, improving the heating effect of the heating tube on the airflow, and enhancing the uniformity of the temperature inside the airflow.

[0012] Preferably, a second guide plate is symmetrically fixed to the middle of the skateboard; a plurality of second circular holes are opened in the middle of the second guide plate; when the airflow flows out from the second fixed groove, it will reach the skateboard and flow along the surface of the skateboard, and then the airflow will reach the second guide plate, part of the airflow will flow out directly from the second circular holes, and the rest of the airflow will flow along the surface of the second guide plate and flow out from the edge of the second guide plate, thereby expanding the distribution range of the airflow inside the box and optimizing the distribution area of ​​the airflow inside the box.

[0013] Preferably, a filter pad is fixedly connected to the inner wall of the exhaust port; the filter pad is located between the fan and the exhaust port; when the heated exhaust gas enters the exhaust port, it will come into contact with the filter pad, and the filter pad will filter the impurities contained in the exhaust gas, thereby improving the convenience of the device for exhaust gas recovery.

[0014] The utility model is beneficial in that:

[0015] 1. The utility model discloses a stainless steel annealing device, through the cooperation of the fixed plate and the second fixed groove, the inclined fixed plate enables the heated nitrogen flowing out of the second fixed groove to heat the stainless steel surface more evenly, thereby reducing the uneven heating caused by the uneven airflow distribution at the fixed plate, and improving the uniformity of the device heating the stainless steel.

[0016] 2. In the stainless steel annealing device described in the utility model, the first guide plate will reset along with the connecting rod and squeeze the stainless steel surface, thereby increasing the airflow on the stainless steel surface, further increasing the contact area between the airflow and the stainless steel, and reducing the area of ​​uneven heating on the stainless steel surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the main body of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the gas collecting cabin in the utility model;

[0020] Figure 3 It is a structural schematic diagram of the slide plate in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the fixing plate in the utility model;

[0022] Figure 5 It is a structural schematic diagram of the connecting rod in the utility model.

[0023] In the figure: 1. box body; 12. fan; 13. exhaust port; 14. fixing plate; 15. first fixing groove; 16. air collecting chamber; 17. second fixing groove; 18. heating tube; 19. fixing assembly; 2. elastic rod; 22. iron ball; 23. connecting rod; 24. first guide plate; 25. first circular hole; 3. rubber plate; 4. thermal insulation cotton; 5. elastic rope; 52. slide plate; 6. second guide plate; 62. second circular hole; 7. filter pad. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Specific examples are given below.

[0026] See also Figures 1 to 5 As shown, a stainless steel annealing device according to an embodiment of the utility model comprises a box body 1; a fan 12 is fixedly connected to the middle of the box body 1; a gas collecting chamber 16 is fixedly connected to the inner side wall of the box body 1; the fan 12 and the gas collecting chamber 16 are connected through a pipeline; a plurality of second fixing grooves 17 are opened in the middle of the gas collecting chamber 16; a plurality of heating pipes 18 are fixedly connected to the inner side wall of the gas collecting chamber 16; an exhaust port 13 is connected to the middle of the box body 1; a plurality of fixing plates 14 are fixedly connected to the inner side wall of the box body 1; the fixing plates 14 The fixing plate 14 and the second fixing groove 17 are arranged correspondingly; a plurality of first fixing grooves 15 are provided in the middle of the fixing plate 14; a fixing assembly 19 is fixedly connected to the top of the fixing plate 14; when working, stainless steel is placed on the top of the fixing plate 14 and the stainless steel is fixed by the fixing assembly 19, and then the starting device drives the fan 12 to start, and the fan 12 is connected to the nitrogen generating device so that the fan 12 sends nitrogen into the interior of the gas collecting cabin 16 through the pipeline, and at the same time, the electric heating wire inside the heating tube 18 is also started and The heat starts to be released, so that the surface temperature of the heating tube 18 increases and the surrounding nitrogen gas is heated. The heated nitrogen will be ejected through the second fixed groove 17 and reach the fixed plate 14. Because the fixed plate 14 is inclined, the heated airflow will cover the surface of the stainless steel more evenly after reaching the surface of the fixed plate 14, increasing the contact area between the airflow and the stainless steel. The heated exhaust gas will be discharged through the exhaust port 13. The staff can connect the exhaust port 13 to an exhaust gas collection device to collect the exhaust gas. After the device heats the stainless steel for a period of time, the heating tube 18 can be stopped. Then, the nitrogen airflow sent into the box body 1 by the fan 12 will cool the surface of the stainless steel when it reaches the fixed plate 14, so as to realize the annealing treatment of the stainless steel by the device; through the cooperation of the fixed plate 14 and the second fixed groove 17, the inclined fixed plate 14 makes the heated nitrogen flowing out of the second fixed groove 17 heat the surface of the stainless steel more evenly, reducing the uneven heating caused by the uneven distribution of the airflow at the fixed plate 14, and improving the uniformity of the device heating the stainless steel.

[0027] See also Figure 4 and Figure 5As shown, the fixing assembly 19 includes a plurality of elastic rods 2; iron balls 22 are fixedly connected between adjacent elastic rods 2; connecting rods 23 are fixedly connected between adjacent iron balls 22; a plurality of first guide plates 24 are fixedly connected to the middle of the connecting rod 23; the first guide plate 24 is an arc-shaped structure; a plurality of first circular holes 25 are opened in the middle of the first guide plate 24; when the stainless steel is placed on the top of the fixing plate 14, the staff can pull the connecting rod 23 so that the connecting rod 23 drives the iron balls 22 to move together, and the iron balls 22 will bend the angle of the elastic rod 2 when they move, and then the stainless steel is placed on the top of the fixing plate 14 and the connecting rod 23 is loosened, and the connecting rod 23 will bend under the gravity of the iron balls 22 and the connecting rod When the connecting rod 23 moves, it will drive the first guide plate 24 to move together. When the first guide plate 24 moves, it will contact and squeeze the stainless steel surface. Because the surface of the first guide plate 24 is an arc-shaped structure, when the airflow reaches the first guide plate 24, part of it will directly pass through the first circular hole 25, and part of it will flow along the surface of the first guide plate 24, increasing the airflow on the surface of the fixed plate 14, and further increasing the contact area between the airflow and the stainless steel; the first guide plate 24 will be reset along with the connecting rod 23 and squeeze the stainless steel surface, increasing the airflow on the stainless steel surface, further increasing the contact area between the airflow and the stainless steel, and reducing the area of ​​uneven heating on the stainless steel surface.

[0028] See also Figure 5 As shown, a plurality of rubber plates 3 are fixedly connected to the bottom of the connecting rod 23; the rubber plates 3 are arranged in an array; when the connecting rod 23 moves, the connecting rod 23 also drives the rubber plates 3 to move together, and the rubber plates 3 come into contact with the stainless steel when moving. Because the surface friction coefficient of the rubber plates 3 is larger, when the rubber plates 3 come into contact with the stainless steel, the contact area between the connecting rod 23 and the stainless steel is increased, thereby increasing the friction between the stainless steel and the connecting rod 23 and improving the stability of the stainless steel during annealing.

[0029] See also Figure 5 As shown, a thermal insulation cotton 4 is fixedly connected to the middle part of the elastic rod 2; the thermal insulation cotton 4 is located on the top of the fixed plate 14; when the heated airflow reaches the fixed plate 14, the elastic rod 2 is also heated. At this time, because the thermal conductivity of the thermal insulation cotton 4 is relatively low, the heat exchange between the elastic rod 2 and the airflow is reduced, the damage to the elastic rod 2 caused by the influence of the heated airflow is reduced, and the service life of the elastic rod 2 is extended.

[0030] See also Figure 3As shown, the inner wall of the air collecting chamber 16 is fixed with a plurality of elastic ropes 5; the ends of the adjacent elastic ropes 5 are estimated to have slide plates 52; the slide plates 52 and the second fixing grooves 17 are in sliding cooperation; when the fan 12 delivers airflow into the air collecting chamber 16, the slide plates 52 will block the second fixing grooves 17 and make the air pressure inside the air collecting chamber 16 increasingly large; at the same time, the heating tube 18 will heat the airflow after it is started, thereby increasing the contact time between the airflow and the heating tube 18; when the air pressure inside the air collecting chamber 16 reaches a certain value, the slide plates 52 will be moved under the action of the air pressure The slide plate 52 slides along the second fixed groove 17 and detaches from the second fixed groove 17, and then the air flow flows out from the second fixed groove 17 and flows toward the fixed plate 14. When the slide plate 52 moves, the elastic rope 5 is in a stretched state; through the cooperation of the elastic rope 5 and the slide plate 52, the slide plate 52 detaches from the second fixed groove 17 under the action of air pressure, so that the air flow inside the air collecting cabin 16 flows out from the second fixed groove 17, thereby increasing the contact time between the air flow inside the air collecting cabin 16 and the heating tube 18, improving the heating effect of the heating tube 18 on the air flow, and enhancing the uniformity of the temperature inside the air flow.

[0031] See also Figure 3 As shown, a second guide plate 6 is symmetrically fixed to the middle of the slide plate 52; a plurality of second circular holes 62 are provided in the middle of the second guide plate 6; when the airflow flows out from the second fixing groove 17, it reaches the slide plate 52 and flows along the surface of the slide plate 52, and then the airflow reaches the second guide plate 6, part of the airflow flows out directly from the second circular holes 62, and the rest of the airflow flows along the surface of the second guide plate 6 and flows out from the edge of the second guide plate 6, thereby expanding the distribution range of the airflow inside the box body 1 and optimizing the distribution area of ​​the airflow inside the box body 1.

[0032] See also Figure 2 As shown, a filter pad 7 is fixedly connected to the inner wall of the exhaust port 13; the filter pad 7 is located between the fan 12 and the exhaust port 13; when the heated exhaust gas enters the exhaust port 13, it will come into contact with the filter pad 7, and the filter pad 7 will filter the impurities contained in the exhaust gas, thereby improving the convenience of the device for exhaust gas recovery.

[0033] Working principle: After the stainless steel is placed on the top of the fixing plate 14, the stainless steel will be fixed by the fixing assembly 19, and then the starting device drives the fan 12 to start, and the fan 12 is connected to the nitrogen generating device so that the fan 12 sends the nitrogen into the gas collecting chamber 16 through the pipeline. At the same time, the electric heating wire inside the heating tube 18 will also start and begin to release heat, so that the surface temperature of the heating tube 18 increases and heats the surrounding nitrogen gas. The heated nitrogen will be ejected through the second fixing groove 17 and reach the fixing plate 14. Because the fixing plate 14 is inclined, the heated airflow will cover the stainless steel more evenly after reaching the surface of the fixing plate 14. The surface of the steel increases the contact area between the airflow and the stainless steel. The heated exhaust gas will be discharged through the exhaust port 13. The staff can connect the exhaust port 13 to an exhaust gas collection device to collect the exhaust gas. After the device heats the stainless steel for a period of time, the heating tube 18 can be stopped. Then, the nitrogen airflow sent into the box body 1 by the fan 12 will cool the surface of the stainless steel when it reaches the fixed plate 14, so that the device can anneal the stainless steel. When the stainless steel is placed on the top of the fixed plate 14, the staff can pull the connecting rod 23 so that the connecting rod 23 drives the iron ball 22 to move together. When the iron ball 22 moves, the angle of the elastic rod 2 will bend. Then, the stainless steel is placed on the top of the fixed plate 14 and the connecting rod 23 is released. The connecting rod 23 will be reset under the gravity of the iron ball 22 and the elastic force of the connecting rod 23. When the connecting rod 23 moves, it will drive the first guide plate 24 to move together. When the first guide plate 24 moves, it will contact and squeeze the stainless steel surface. Because the surface of the first guide plate 24 is an arc structure, when the airflow reaches the first guide plate 24, part of it will directly pass through the first circular hole 25, and part of it will flow along the surface of the first guide plate 24, increasing the airflow on the surface of the fixed plate 14, and further increasing the contact area between the airflow and the stainless steel. When the connecting rod 23 moves, the connecting rod 23 will also drive the rubber plate 3 to move together. When the rubber plate 3 moves, it will come into contact with the stainless steel. Because the surface friction coefficient of the rubber plate 3 is larger, the contact area between the connecting rod 23 and the stainless steel will increase when the rubber plate 3 comes into contact with the stainless steel, thereby increasing the friction between the stainless steel and the connecting rod 23 and improving the stability of the stainless steel during annealing. When the heated airflow reaches the fixed plate 14, it will also heat the elastic rod 2. At this time, because the thermal conductivity of the thermal insulation cotton 4 is relatively low, the heat exchange between the elastic rod 2 and the airflow is reduced, thereby reducing the damage to the elastic rod 2 caused by the heated airflow, thereby extending the service life of the elastic rod 2.When the fan 12 delivers air into the air collecting chamber 16, the slide plate 52 will block the second fixed groove 17 and increase the air pressure inside the air collecting chamber 16. At the same time, the heating tube 18 will heat the airflow after it is started, increasing the contact time between the airflow and the heating tube 18. When the air pressure inside the air collecting chamber 16 reaches a certain value, the slide plate 52 will slide along the second fixed groove 17 under the action of the air pressure and detach from the second fixed groove 17. Then the airflow will flow out of the second fixed groove 17 and flow to the fixed plate 14. When the slide plate 52 moves, the elastic rope 5 will be in a stretched state. After the air flows out of the second fixed groove 17, it will reach the slide plate 52 and flow along the surface of the slide plate 52. Then, the airflow will reach the second guide plate 6. Part of the airflow will flow out directly from the second circular hole 62, while the rest of the airflow will flow along the surface of the second guide plate 6 and flow out from the edge of the second guide plate 6, expanding the distribution range of the airflow inside the box 1 and optimizing the distribution area of ​​the airflow inside the box 1. When the heated exhaust gas enters the exhaust port 13, it will contact the filter pad 7, and the filter pad 7 will filter the impurities contained in the exhaust gas, thereby improving the convenience of the device for exhaust gas recovery. ;

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A stainless steel annealing device, comprising a housing (1), characterized in that: A fan (12) is fixedly connected to the middle of the box body (1); an air collecting chamber (16) is fixedly connected to the inner wall of the box body (1); the fan (12) and the air collecting chamber (16) are connected through a pipeline; a plurality of second fixing grooves (17) are opened in the middle of the air collecting chamber (16); a plurality of heating pipes (18) are fixedly connected to the inner wall of the air collecting chamber (16); an exhaust port (13) is connected to the middle of the box body (1); a plurality of fixing plates (14) are fixedly connected to the inner wall of the box body (1); the fixing plates (14) are inclined; the fixing plates (14) and the second fixing grooves (17) are correspondingly arranged; a plurality of first fixing grooves (15) are opened in the middle of the fixing plate (14); a fixing assembly (19) is fixedly connected to the top of the fixing plate (14).

2. A stainless steel annealing device according to claim 1, characterized in that: The fixing assembly (19) comprises a plurality of elastic rods (2); iron balls (22) are fixedly connected between adjacent elastic rods (2); connecting rods (23) are fixedly connected between adjacent iron balls (22); a plurality of first guide plates (24) are fixedly connected to the middle of the connecting rods (23); the first guide plates (24) are of arc-shaped structure; and a plurality of first circular holes (25) are provided in the middle of the first guide plates (24).

3. A stainless steel annealing device according to claim 2, characterized in that: A plurality of rubber plates (3) are fixedly connected to the bottom of the connecting rod (23); the rubber plates (3) are arranged in an array.

4. A stainless steel annealing device according to claim 3, characterized in that: A heat-insulating cotton (4) is fixedly connected to the middle of the elastic rod (2); the heat-insulating cotton (4) is located on the top of the fixing plate (14).

5. A stainless steel annealing device according to claim 4, characterized in that: A plurality of elastic ropes (5) are fixedly connected to the inner side wall of the gas collecting chamber (16); a slide plate (52) is estimated to be provided at the end of the adjacent elastic rope (5); and the slide plate (52) and the second fixing groove (17) are in sliding fit.

6. A stainless steel annealing device according to claim 5, characterized in that: A second guide plate (6) is symmetrically fixedly connected to the middle of the slide plate (52); a plurality of second circular holes (62) are opened in the middle of the second guide plate (6).

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