Heating wire mounting structure of ultra-deep well type nitriding furnace

Abstract

The utility model relates to the technical field of nitriding furnaces, in particular to a heating wire mounting structure of an ultra-deep well type nitriding furnace, which comprises a furnace body and a plurality of annular heating wires, any end of the furnace body is provided with a bed body, the annular heating wires are uniformly distributed at equal intervals along the length direction of the furnace body, any heating wire is provided with a wave structure along the circumferential direction of the furnace body, and the heating wires are arranged on the bed body. The nitriding furnace disclosed by the utility model has the beneficial effects that the plurality of annular heating wires are arranged at equal intervals along the length direction of the furnace body, and each annular heating wire adopts an independent temperature control system, so that the uniformity of temperature conditions in the nitriding process is improved; the heating coverage range of the nitriding furnace is widened while the heating uniformity is improved through the heating wires of the wave structure, and the heating wires of the wave structure can better adapt to the curved surface shape of the furnace wall, so that the heating wires can be attached to the larger area of the furnace wall; the annular heating wire is installed on the inner furnace wall through a bolt, and the annular heating wire is arranged at any end point of the wave.

Description

Technical Field

[0001] The utility model relates to the technical field of nitriding furnaces, in particular to a heating wire installation structure of an ultra-deep well type nitriding furnace. Background Art

[0002] The ultra-deep pit nitriding furnace is a kind of equipment used for surface treatment, usually for nitriding metal parts. By infiltrating nitrogen atoms into the metal surface at high temperature, the hardness, wear resistance and corrosion resistance of metal parts can be improved. This type of furnace is usually designed as a vertical structure, and the metal parts are placed into the furnace from the top through a lifting device, and then treated in a high temperature and nitrogen atmosphere. In this process, nitrogen will penetrate into the metal surface to form a nitride layer, thereby improving the properties of the metal material. Ultra-deep pit nitriding furnaces are widely used in industrial production, especially in the fields of automobile manufacturing, aerospace and machinery manufacturing, to improve the durability and performance of parts.

[0003] During the nitriding process, metal parts are heated to high temperatures and exposed to a nitrogen-containing gas environment to achieve a nitriding reaction on the surface, thereby enhancing the hardness and wear resistance of the material; however, existing nitriding furnaces have problems with poor heating effect and uneven heating, which will affect the stability of the nitriding effect and the quality of the parts; in addition, the structural design of the furnace and auxiliary equipment may not be optimized enough, resulting in uneven heat flow and conduction, making it difficult to achieve a comprehensive heating effect. Utility Model Content

[0004] In view of the above problems, the present application provides a heating wire installation structure for an ultra-deep well nitriding furnace, the structure of which is as follows:

[0005] A heating wire installation structure for an ultra-deep well nitriding furnace, comprising:

[0006] A furnace body with a heating cavity is provided inside, and either end of the furnace body is provided as a bed for placing metal parts;

[0007] There are several annular heating wires, and each annular heating wire is evenly and equidistantly arranged along the length direction of the furnace body. Any heating wire is arranged into a wave structure along its circumference. Each annular heating wire is connected to an independent heat source. The heating wire with a wave structure not only improves the heating uniformity, but also broadens the heating coverage and reduces the total number of annular heating wires.

[0008] Based on the above technical solutions, a uniform high-temperature environment is created for the combination of nitrogen and metal parts through a number of annular heating wires, which can improve the efficiency and quality of nitriding, so as to ensure that the nitriding process on the surface and inside of the metal parts reaches a more uniform and stable state; through the annular heating wire arrangement, the heating source can be evenly distributed around the entire processing area to achieve all-round heating coverage, avoid local temperatures that are too high or too low, and improve the uniformity of the nitriding process; the annular heating wire also helps to improve heating efficiency, reduce energy waste, improve energy utilization, and reduce production costs.

[0009] Preferably, the furnace body is divided into an outer furnace drum and an inner furnace wall, and the outer furnace drum is arranged in multiple sections, and the upper and lower ends thereof are arranged as a first flange and a second flange respectively.

[0010] Preferably, the first flange end of any outer furnace drum is connected to the second flange end of the adjacent outer furnace drum through a third bolt.

[0011] Based on the above technical solution, the furnace body of the nitriding furnace is set to a multi-section design with a flange structure. The furnace body is divided into multiple sections, and each section is connected by a flange. It can be disassembled in sections, which is convenient for maintenance and replacement of each part, reducing the difficulty and cost of maintenance; different sections can independently control the temperature and heating power, providing a more flexible heating method to meet the processing requirements of different workpieces; the heating system of each section can also be independently controlled, which is conducive to achieving a more uniform heating effect within the section and improving the uniformity and consistency of nitriding.

[0012] Preferably, the heating wire presents a plurality of alternating upper and lower ends along its length direction, and heating terminals are provided at both ends of the heating wire, and the heating terminals pass through the furnace body and are connected to an external heat source.

[0013] Preferably, each upper point end is connected to the inner furnace wall through a first bolt, and each lower point end is connected to the inner furnace wall through a second bolt.

[0014] Based on the above technical solution, the bolts can effectively fix the heating wire and ensure good contact between it and the furnace wall, avoiding displacement or loosening of the heating wire during the heating process; after the wavy ring-shaped heating wire is installed on the inner furnace wall, close contact between the heating wire and the furnace wall is ensured, which is beneficial to heat conduction and uniform heating, thereby improving heating efficiency.

[0015] Preferably, one side of the furnace body close to the bed body is configured as a detachable structure, which is used for taking and placing metal parts and the bed body before and after the nitriding operation is completed.

[0016] Preferably, an observation window and a gas passage for introducing nitrogen are provided on the side of the furnace body.

[0017] Preferably, an independent heating module is also integrated on the bed.

[0018] Based on the above technical solution, the heating module is an integrated high-frequency induction current heating principle dominated by a transformer, which helps to improve the heating effect and heating uniformity of metal workpieces; the high-frequency induction current achieves heating by inducing eddy currents in the metal material, so that heat is generated inside the metal material, and the surface of the metal material can be heated to the required temperature in a very short time, thereby improving production efficiency and realizing local heating, thus avoiding the problem of excessive temperature gradient generated during overall heating and improving heating uniformity.

[0019] Compared with the prior art, the utility model has the following beneficial technical effects:

[0020] 1. The utility model improves the uniformity of temperature conditions during nitriding by equidistantly arranging a number of annular heating wires along the length direction of the furnace body, and each annular heating wire adopts an independent temperature control system;

[0021] 2. The utility model improves the heating uniformity through the heating wire with a wave structure, and also broadens the heating coverage of the nitriding furnace. The heating wire with a wave structure can better adapt to the curved surface shape of the furnace wall, so that the heating wire can fit a larger area of ​​the furnace wall;

[0022] 3. The utility model has a simple structure. The annular heating wire is installed on the inner furnace wall by bolts, and any end points of the wave are fixed by bolts, which avoids displacement or loosening of the heating wire during the heating process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 For this utility model Figure 1 A magnified view of the structure in the middle;

[0025] Figure 3 For this utility model Figure 1 Cross-section of the structure at AA in the middle;

[0026] Figure 4 For this utility model Figure 3 A magnified view of the structure in the

[0027] Figure 5 It is a schematic diagram of the structure of the heating wire in the utility model;

[0028] Figure 6 It is a side structural cross-sectional view of the heating wire of the utility model when it is installed.

[0029] 1: outer furnace tube, 2: inner furnace wall, 3: bed, 4: heating wire, 5: heating terminal, 6: first bolt, 7: second bolt, 8: first flange, 9: second flange, 10: third bolt,

[0030] 401: upper point end, 402: lower point end. DETAILED DESCRIPTION

[0031] The following describes the specific implementation of the utility model in conjunction with the accompanying drawings and embodiments:

[0032] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should fall within the scope of the technical content disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0033] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of the implementation of the present utility model without substantially changing the technical content.

[0034] Example 1

[0035] Reference Figures 1 to 6 The present embodiment provides a heating wire installation structure for an ultra-deep well nitriding furnace, including a plurality of annular heating wires 4 and a furnace body with a heating cavity provided inside. A bed 3 for placing metal parts is arranged at either end of the furnace body. The annular heating wires 4 are evenly and equidistantly arranged along the length direction of the furnace body. Any heating wire 4 is arranged as a wave structure along its circumference. Each annular heating wire 4 is connected to an independent heat source. The heating wire 4 with a wave structure not only improves the heating uniformity, but also broadens the heating coverage, reduces the total number of annular heating wires 4, and the furnace body is divided into an outer furnace tube 1 and an inner furnace wall 2.

[0036] The heating wire 4 presents a plurality of alternating upper point ends 401 and lower point ends 402 along its length direction. Heating terminals 5 are provided at both ends of the heating wire 4. The heating terminals 5 pass through the furnace body and are connected to an external heat source. In this structure, each upper point end 401 is connected to the inner furnace wall 2 through a first bolt 6, and each lower point end 402 is connected to the inner furnace wall 2 through a second bolt 7.

[0037] The side of the furnace body close to the bed 3 is set as a detachable structure, which is used for taking and placing metal parts and the bed 3 before and after the nitriding operation is completed. In this structure, an observation window and a gas channel for introducing nitrogen are opened on the side of the furnace body, and the observation window and the gas channel are both arranged on the side of the furnace body away from the bed 3.

[0038] Example 2

[0039] Reference Figure 3 to Figure 4 Based on Example 1, this embodiment also provides a heating wire installation structure for an ultra-deep well nitriding furnace. The outer furnace barrel 1 is configured to be multi-section, and its upper and lower ends are respectively configured to be a first flange 8 and a second flange 9. In this structure, an independent heating module is also integrated on the bed 3. The first flange 8 end of any outer furnace barrel 1 is connected to the second flange 9 end of the adjacent outer furnace barrel 1 through a third bolt 10.

[0040] The specific installation implementation process is: install multiple annular heating wires 4 in each section of the outer furnace tube 1 along its length direction, and bolts are installed on any undulating ends of each annular heating wire 4 to achieve positioning between it and the inner furnace wall 2; the outer furnace tubes 1 with multiple annular heating wires 4 installed are connected head to head through a flange structure, thereby realizing the installation of annular heating wires 4 in the entire furnace body, and each annular heating wire 4 is respectively led out to the outside with a heating terminal 5, and each heating terminal 5 is respectively connected to an independent temperature control source, and each temperature control source is equipped with a corresponding temperature detection module, thereby creating a more uniform temperature control environment, making the nitriding operation of metal parts more efficient.

[0041] Many other changes and modifications can be made without departing from the concept and scope of the utility model. It should be understood that the invention is not limited to specific embodiments, and the scope of the invention is defined by the appended claims.

Claims

1. A heating wire installation structure for an ultra-deep well nitriding furnace, characterized in that: include: A furnace body with a heating cavity is provided inside, and a bed (3) for placing metal parts is provided at either end of the furnace body; A plurality of annular heating wires (4) are uniformly arranged at equal distances along the length direction of the furnace body, and any of the heating wires (4) is arranged in a wave structure along its circumference. Each of the annular heating wires (4) is connected to an independent heat source. The heating wires (4) with the wave structure not only improve heating uniformity, but also broaden the heating coverage, thereby reducing the total number of the annular heating wires (4) arranged.

2. The heating wire installation structure of the ultra-deep pit nitriding furnace according to claim 1 is characterized in that: The furnace body is divided into an outer furnace tube (1) and an inner furnace wall (2). The outer furnace tube (1) is arranged in multiple sections, and its upper and lower ends are respectively arranged as a first flange (8) and a second flange (9).

3. The heating wire installation structure of the ultra-deep pit nitriding furnace according to claim 2 is characterized in that: The first flange (8) end of any one of the outer furnace tubes (1) is connected to the second flange (9) end of the adjacent outer furnace tube (1) through a third bolt (10).

4. The heating wire installation structure of the ultra-deep pit nitriding furnace according to claim 3 is characterized in that: The heating wire (4) presents a plurality of alternating upper end positions (401) and lower end positions (402) along its length direction, and heating terminals (5) are provided at both ends of the heating wire (4), and the heating terminals (5) pass through the furnace body and are connected to an external heat source.

5. The heating wire installation structure of the ultra-deep pit nitriding furnace according to claim 4, characterized in that: Each of the upper point ends (401) is connected to the inner furnace wall (2) via a first bolt (6), and each of the lower point ends (402) is connected to the inner furnace wall (2) via a second bolt (7).

6. The heating wire installation structure of the ultra-deep pit nitriding furnace according to claim 1, characterized in that: A side of the furnace body close to the bed body (3) is configured as a detachable structure, which is used for taking and placing metal parts and the bed body (3) before and after the nitriding operation is completed.

7. The heating wire installation structure of the ultra-deep pit nitriding furnace according to claim 1, characterized in that: An observation window and a gas channel for introducing nitrogen are provided on the side of the furnace body.

8. The heating wire installation structure of the ultra-deep pit nitriding furnace according to claim 1, characterized in that: An independent heating module is also integrated on the bed (3).

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