Steel casting annealing device

Abstract

The utility model discloses a steel casting annealing device which comprises an annealing furnace, a supporting table, two heating boxes, a pipeline assembly, a driving assembly and two heating devices, the supporting table is fixedly arranged in the annealing furnace, and a plurality of through holes distributed in a surrounding mode are formed in the supporting table; the two heating boxes are fixedly arranged on the two sides of the annealing furnace respectively, each heating box is internally provided with a first cavity and a second cavity, and a partition plate is arranged in the heating box and located between the first cavity and the second cavity; and the pipeline assembly comprises a U-shaped gas conveying pipe, two heating pipes, a U-shaped nitrogen injection pipe and a connecting pipe, the U-shaped gas conveying pipe is fixedly arranged on the two heating boxes, and the two ends of the U-shaped gas conveying pipe penetrate into the corresponding first cavities correspondingly. Therefore, the concentration of nitrogen in the annealing furnace can be uniformly distributed, and the steel casting is effectively prevented from being oxidized in the heat treatment process, so that the steel casting can achieve an expected annealing effect, and the overall quality of a product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cast steel casting, in particular to an annealing device for cast steel parts. Background Art

[0002] The annealing process plays a crucial role in the production of cast steel parts, and its core equipment is the annealing furnace. During this process, the cast steel parts are placed in the annealing furnace for heat treatment. At the same time, nitrogen gas is continuously introduced into the furnace to form a protective layer, isolating the direct contact between the cast steel parts and oxygen, thereby effectively preventing the oxidation of the surface of the cast steel parts during the heat treatment process.

[0003] However, a significant problem is that the nitrogen distribution in the existing annealing furnace is uneven, which directly leads to a higher oxidation risk for the cast steel parts in the areas with thin nitrogen. Once these cast steel parts come into contact with oxygen, oxidation will be inevitable, thereby damaging their annealing effect and making the quality of the final product unable to meet the expected standards. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems in the related art to some extent.

[0005] Therefore, the purpose of the utility model is to provide an annealing device for cast steel parts, which can make the nitrogen concentration in the annealing furnace evenly distributed, effectively prevent the oxidation of the cast steel parts during the heat treatment process, thereby ensuring that the cast steel parts can achieve the expected annealing effect and improving the overall quality of the products.

[0006] To achieve the above object, the present utility model provides an annealing device for cast steel parts, which includes an annealing furnace, a support table, two heating boxes, a pipeline assembly, a driving assembly and two heating devices. Among them, the support table is fixedly arranged in the annealing furnace, and a plurality of through holes distributed in a surrounding manner are formed on the support table; the two heating boxes are respectively fixedly arranged on both sides of the annealing furnace, and each heating box is respectively provided with a first chamber and a second chamber, and a partition plate is arranged between the first chamber and the second chamber in the heating box; the pipeline assembly includes a U-shaped gas transmission pipe, two heating pipes, a U-shaped nitrogen injection pipe and a connecting pipe. Among them, the U-shaped gas transmission pipe is fixedly arranged on the two heating boxes, and both ends of the U-shaped gas transmission pipe respectively penetrate into the corresponding first chamber; the two heating pipes are respectively arranged in the corresponding first chamber, one end of the heating pipe is communicated with one end of the U-shaped gas transmission pipe, and the other end of the heating pipe penetrates out of the first chamber and is connected with a nitrogen supply device; the U-shaped nitrogen injection pipe is rotatably arranged in the annealing furnace and surrounds the support table, and a plurality of injection holes are formed on the inner wall of the U-shaped nitrogen injection pipe; one end of the connecting pipe is fixedly connected with the U-shaped nitrogen injection pipe, and the other end of the connecting pipe penetrates out of the annealing furnace and is rotatably connected with the U-shaped gas transmission pipe; the driving assembly is arranged on the annealing furnace, and the driving assembly is connected with the connecting pipe; the two heating devices are respectively arranged in the corresponding second chamber.

[0007] The annealing device for cast steel parts of the present utility model can make the nitrogen concentration in the annealing furnace evenly distributed, effectively prevent the cast steel parts from being oxidized during the heat treatment process, so as to ensure that the cast steel parts can achieve the expected annealing effect and improve the overall quality of the products.

[0008] In addition, the annealing device for cast steel parts proposed according to the above application may also have the following additional technical features:

[0009] Specifically, a gate is arranged on the side wall of the annealing furnace.

[0010] Specifically, the heating pipes are distributed in a snake shape in the first chamber.

[0011] Specifically, the driving assembly includes a driving mechanism and a belt transmission mechanism. Among them, the driving mechanism is fixedly arranged on the annealing furnace, and the output end of the driving mechanism is connected with the connecting pipe through the belt transmission mechanism.

[0012] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0013] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

[0014] Figure 1 is a three-dimensional view of an annealing device for cast steel parts according to an embodiment of the present utility model Figure 1 ;

[0015] Figure 2 is a three-dimensional view of an annealing device for cast steel parts according to an embodiment of the present utility model Figure 2 ;

[0016] Figure 3 is a cross-sectional view of an annealing device for cast steel parts according to an embodiment of the present utility model.

[0017] As shown in the figure: 10, annealing furnace; 11, gate; 20, support table; 21, through hole; 30, heating box; 31, first chamber; 32, second chamber; 33, partition plate; 40, pipe assembly; 41, U-shaped gas delivery pipe; 42, heating pipe; 43, U-shaped nitrogen injection pipe; 44, connecting pipe; 401, injection hole; 50, drive assembly; 51, drive mechanism; 52, belt drive mechanism; 60, heating device. Detailed implementation manners

[0018] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model. On the contrary, the embodiments of the present utility model include all changes, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0019] The annealing device for cast steel parts according to the embodiment of the present utility model will be described below in conjunction with the accompanying drawings.

[0020] As Figures 1 - 3 shown, the annealing device for cast steel parts according to the embodiment of the present utility model may include an annealing furnace 10, a support table 20, two heating boxes 30, a pipe assembly 40, a drive assembly 50, and two heating devices 60.

[0021] Among them, the support table 20 is fixedly arranged in the annealing furnace 10, and a plurality of circumferentially distributed through holes 21 are formed in the support table 20. For example, the plurality of through holes 21 may be 8, 9, 10, 11, 12 through holes 21, etc. The specific number of settings can be selected according to the actual situation and is not limited herein. It can be understood that by forming the through holes 21 in the support table 20, it is convenient for the hot air to pass through the through holes 21 to heat the bottom of the cast steel parts placed on the support table 20, thereby playing a role in uniformly heating the cast steel parts.

[0022] Two heating boxes 30 are respectively fixedly arranged on both sides of the annealing furnace 10. A first chamber 31 and a second chamber 32 are respectively arranged in each heating box 30. A partition plate 33 is arranged between the first chamber 31 and the second chamber 32 in the heating box 30.

[0023] It should be noted that the partition plate 33 described in this embodiment is a metal plate with heat conduction function.

[0024] In this embodiment, a gate 11 is arranged on the side wall of the annealing furnace 10. It can be understood that by arranging the gate 11, it is convenient for the staff to place the cast steel parts on the support table 20 in the annealing furnace 10 by opening the gate 11.

[0025] The pipeline assembly 40 may include a U-shaped gas delivery pipe 41, two heating pipes 42, a U-shaped nitrogen injection pipe 43 and a connecting pipe 44. Among them, the U-shaped gas delivery pipe 41 is fixedly arranged on the two heating boxes 30, and both ends of the U-shaped gas delivery pipe 41 respectively penetrate into the corresponding first chamber 31.

[0026] The two heating pipes 42 are respectively arranged in the corresponding first chamber 31. One end of the heating pipe 42 is communicated with one end of the U-shaped gas delivery pipe 41, and the other end of the heating pipe 42 penetrates out of the first chamber 31 and is connected with a nitrogen supply device.

[0027] It should be noted that the nitrogen supply device described in this embodiment may be a nitrogen generator.

[0028] The U-shaped nitrogen injection pipe 43 is rotatably arranged in the annealing furnace 10 and surrounds the support table 20. Among them, a plurality of injection holes 401 are opened on the inner wall of the U-shaped nitrogen injection pipe 43. For example, the plurality of injection holes 401 may be 19, 20, 21, 22, 23 injection holes 401, etc. The specific number of settings can be selected according to the actual situation and is not limited here. However, it should be noted that the plurality of injection holes 401 are arranged side by side at equal intervals on the inner wall of the U-shaped nitrogen injection pipe 43, and the injection holes 401 on the inner walls on both sides of the U-shaped nitrogen injection pipe 43 are inclined downward and face the support table 20.

[0029] One end of the connecting pipe 44 is fixedly connected with the U-shaped nitrogen injection pipe 43, the other end of the connecting pipe 44 penetrates out of the annealing furnace 10 and is rotatably connected with the U-shaped gas delivery pipe 41. A driving assembly 50 is arranged on the annealing furnace 10, and the driving assembly 50 is connected with the connecting pipe 44. Two heating devices 60 are respectively arranged in the corresponding second chamber 32.

[0030] It should be noted that the heating device 60 described in this embodiment may be an electric heating grid, and the electric heating grid is connected with an external controller.

[0031] To clearly illustrate the previous embodiment, in an embodiment of the present utility model, as Figure 3 shown, the heating tube 42 is distributed in a serpentine shape within the first chamber 31. It can be understood that by arranging the heating tube 42 in a serpentine shape within the first chamber 31, the path of nitrogen passing through the first chamber 31 can be effectively extended, thereby enhancing the heating effect on nitrogen.

[0032] In an embodiment of the present utility model, as Figure 1 shown, the driving assembly 50 may include a driving mechanism 51 and a belt drive mechanism 52. Among them, the driving mechanism 51 is fixedly arranged on the annealing furnace 10, and the output end of the driving mechanism 51 is connected to the connecting pipe 44 through the belt drive mechanism 52. It should be noted that the driving mechanism 51 described in this embodiment may be a driving motor.

[0033] It should be noted that the belt drive mechanism 52 described in this embodiment may include a first pulley, a second pulley, and a belt. Among them, the first pulley is sleeved on the connecting pipe 44, the second pulley is arranged at the output end of the driving mechanism 51, and the belt is sleeved on the first pulley and the second pulley.

[0034] It can be understood that the staff can control the driving mechanism 51 to drive the connecting pipe 44 through the belt drive mechanism 52 to drive the U-shaped nitrogen injection pipe 43 to rotate.

[0035] Specifically, when annealing treatment is required for the steel casting, the relevant staff first need to open the gate 11 to place the steel casting on the support table 20 within the annealing furnace 10, and then close the gate 11. Subsequently, the staff control the heating device 60 to heat the annealing furnace 10 through the controller, thereby heating the steel casting located on the support table 20.

[0036] Meanwhile, the staff control the nitrogen supply device to supply nitrogen into the heating tube 42. The nitrogen enters the heating tube 42 and is heated by the heat of the heating device 60 transmitted by the partition plate 33. The heated nitrogen is successively transported to the U-shaped nitrogen injection pipe 43 through the U-shaped gas delivery pipe 41 and the connecting pipe 44, and is sprayed onto the steel casting through the spray holes 401. At the same time, control the driving mechanism 51 to drive the connecting pipe 44 through the belt drive mechanism 52 to drive the U-shaped nitrogen injection pipe 43 to rotate. The rotating U-shaped nitrogen injection pipe 43 evenly sprays nitrogen around the steel casting, so that the nitrogen forms a protective layer on the steel casting to isolate the direct contact between the steel casting and oxygen, thereby preventing the surface of the steel casting from oxidizing during the heat treatment process.

[0037] In summary, the annealing device for cast steel parts according to the embodiments of the present utility model can make the nitrogen concentration in the annealing furnace evenly distributed, effectively prevent the oxidation of cast steel parts during the heat treatment process, thereby ensuring that the cast steel parts can achieve the expected annealing effect and improving the overall quality of the products.

[0038] In the description of this specification, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0039] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0040] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A steel casting annealing device, characterized in that: It includes an annealing furnace, a support table, two heating boxes, a pipeline assembly, a drive assembly and two heating devices, wherein: The support platform is fixedly arranged in the annealing furnace, and a plurality of through holes distributed around the support platform are opened; The two heating boxes are fixedly arranged on both sides of the annealing furnace, each of the heating boxes is respectively provided with a first chamber and a second chamber, and a partition plate is provided between the first chamber and the second chamber in the heating box; The pipeline assembly includes a U-shaped gas delivery pipe, two heating pipes, a U-shaped nitrogen injection pipe and a connecting pipe, wherein: The U-shaped gas delivery pipe is fixedly arranged on the two heating boxes, and both ends of the U-shaped gas delivery pipe respectively penetrate into the corresponding first chamber; The two heating tubes are respectively arranged in the corresponding first chambers, one end of the heating tube is connected to one end of the U-shaped gas pipe, and the other end of the heating tube passes through the first chamber and is connected to the nitrogen supply device; The U-shaped nitrogen injection pipe is rotatably disposed in the annealing furnace and surrounds the support table, wherein a plurality of injection holes are opened on the inner wall of the U-shaped nitrogen injection pipe; One end of the connecting pipe is fixedly connected to the U-shaped nitrogen injection pipe, and the other end of the connecting pipe passes through the annealing furnace and is rotatably connected to the U-shaped gas delivery pipe; The driving assembly is arranged on the annealing furnace, and the driving assembly is connected to the connecting pipe; The two heating devices are respectively arranged in the corresponding second chambers.

2. The steel casting annealing device according to claim 1, characterized in that: A gate is arranged on the side wall of the annealing furnace.

3. The steel casting annealing device according to claim 1, characterized in that: The heating tubes are distributed in the first chamber in a serpentine shape.

4. The steel casting annealing device according to claim 1, characterized in that: The driving assembly comprises a driving mechanism and a belt transmission mechanism, wherein the driving mechanism is fixedly arranged on the annealing furnace, and the output end of the driving mechanism is connected to the connecting pipe through the belt transmission mechanism.

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