Non-magnetic steel heat treatment device

Abstract

The utility model provides a non-magnetic steel heat treatment device, which belongs to the technical field of non-magnetic steel heat treatment and comprises a heat treatment kettle and a heat treatment mechanism arranged in the heat treatment kettle, the heat treatment mechanism comprises a plurality of heating plates arranged on the inner cambered surface of the heat treatment kettle, and the bottom of the inner cavity of the heat treatment kettle is rotatably connected with a plurality of supporting rods. A heating rod is arranged in an inner cavity of each supporting rod, a driving assembly used for driving the supporting rods to rotate is further arranged at the bottom of the heat treatment kettle, the heating rods are hollow rod bodies, and a plurality of penetrating openings are formed in the outer arc surfaces of the heating rods. The inner wall and the outer wall of the workpiece are synchronously radiated and heated through the heat treatment mechanism, and the inner wall and the outer wall of the workpiece are synchronously heated through the synergistic effect of the inner heat source and the outer heat source, so that the heat treatment period is shortened, and the deformation risk of the workpiece caused by temperature gradient is effectively inhibited.

Description

Technical Field

[0001] This utility model belongs to the field of non-magnetic steel heat treatment technology, and specifically relates to a non-magnetic steel heat treatment device. Background Technology

[0002] Non-magnetic steel is a non-magnetic or low-magnetic metallic material that is widely used in drilling tools, especially in drilling operations in industries such as oil, gas and geological exploration. Due to its unique non-magnetic properties, non-magnetic steel workpieces will not be magnetized or will only produce a very low magnetization effect in a magnetic field environment. Therefore, it is very suitable for use in scenarios where magnetic field interference needs to be avoided. For tubular non-magnetic steel workpieces, a specially designed non-magnetic steel heat treatment device is usually used in the heat treatment process.

[0003] Existing heat treatment methods generally involve placing tubular non-magnetic steel workpieces in a heat treatment autoclave and using heating tubes or other heating elements to achieve heat treatment. Although this method can complete the basic heat treatment task, it still has some shortcomings in practical applications. It cannot simultaneously and efficiently radiate heat the inner and outer walls of the tubular non-magnetic steel workpieces, resulting in a long heat treatment cycle and a risk of deformation due to temperature gradients. Utility Model Content

[0004] In view of this, the present invention provides a non-magnetic steel heat treatment device, which can simultaneously radiate heat to the inner and outer walls of the workpiece through the heat treatment mechanism. The synergistic effect of the internal and external heat sources ensures that the inner and outer walls of the workpiece are heated simultaneously, thereby shortening the heat treatment cycle and effectively suppressing the risk of deformation of the workpiece due to temperature gradient.

[0005] To address the aforementioned technical problems, this utility model provides a non-magnetic steel heat treatment device, comprising a heat treatment kettle and a heat treatment mechanism disposed therein. The heat treatment mechanism includes multiple heating plates disposed on the inner arc surface of the heat treatment kettle. Multiple support rods are rotatably connected to the bottom of the inner cavity of the heat treatment kettle, and each support rod has a heating rod in its inner cavity. The bottom of the heat treatment kettle is also provided with a drive assembly for driving the support rods to rotate, that is, the inner and outer walls of the workpiece are simultaneously radiated and heated. The synergistic effect of the internal and external bidirectional heat sources ensures that the inner and outer walls of the workpiece are heated simultaneously, thereby shortening the heat treatment cycle and effectively suppressing the risk of deformation of the workpiece due to temperature gradient.

[0006] The heating rod is a hollow rod with multiple through openings on its outer arc surface to avoid affecting the heat treatment effect.

[0007] The heat treatment mechanism also includes locking sleeves that are threaded to the upper end of the heating rod, which serve to limit and fix the position.

[0008] The heat treatment mechanism also includes multiple positioning plates respectively set at the lower end of the locking screw sleeve. The outer surface of the positioning plates is inclined downward from the outside to the inside, which provides stable positioning for non-magnetic steel workpieces of different diameters.

[0009] The drive assembly includes a mounting cavity at the lower end of the heat treatment vessel. A gear is rotatably connected to the middle of the mounting cavity. The lower ends of the support rods are all located inside the mounting cavity, and each lower end of the support rod is provided with a toothed ring. The toothed rings mesh with the gear, thus achieving rapid transmission.

[0010] The drive assembly also includes a motor located at the bottom of the heat treatment vessel. The output shaft of the motor is fixedly connected to the lower end of the gear, thus providing a drive source for the gear.

[0011] The lower end of the heating rod is set in an inverted cone shape, which is suitable for non-magnetic steel workpieces of different diameters.

[0012] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0013] 1. The tubular non-magnetic steel workpieces to be processed are sequentially and movably sleeved onto the outside of the support rod. The design of the inverted conical lower end of the support rod can accommodate tubular non-magnetic steel workpieces of different diameters. After sleeved, they are fixed to the upper end of the support rod with locking screw sleeves. At the same time, the positioning plate on the support rod is inserted into the corresponding support rod. The positioning plate provides stable clamping for tubular non-magnetic steel workpieces of different diameters. During heat treatment, the heating plate and heating rod are activated synchronously, thereby radiating heat to the inner and outer walls of the workpiece simultaneously. The synergistic effect of the internal and external heat sources ensures that the inner and outer walls of the workpiece are heated synchronously, thus shortening the heat treatment cycle and effectively suppressing the risk of deformation of the workpiece due to temperature gradient.

[0014] 2. Start the motor, and its output shaft drives the gear to rotate. When the gear rotates, it drives all the support rods to rotate synchronously through the toothed ring that meshes with it, so that the workpiece rotates at a uniform speed in the heat treatment kettle, thereby further improving the uniformity of heat treatment of tubular non-magnetic steel workpieces, significantly improving the uniformity of heat distribution, and avoiding local overheating or underheating. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of a non-magnetic steel heat treatment device according to the present invention;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is an enlarged structural diagram of point A in this utility model;

[0018] Figure 4 This is an enlarged structural diagram of section B of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 100, heat treatment vessel; 200, heating plate; 201, support rod; 202, heating rod; 203, locking nut; 204, positioning plate; 300, mounting cavity; 301, gear; 302, toothed ring; 303, motor. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0021] This embodiment provides a non-magnetic steel heat treatment device, such as... Figure 1-4 The diagram shows a heat treatment vessel 100 and a heat treatment mechanism disposed therein. The heat treatment mechanism includes multiple heating plates 200 disposed on the inner arc surface of the heat treatment vessel 100. The multiple heating plates 200 are evenly distributed in a ring on the inner arc surface of the heat treatment vessel 100. Multiple support rods 201 are rotatably connected to the bottom of the inner cavity of the heat treatment vessel 100. Each support rod 201 has a rotating groove at the bottom of the inner cavity of the heat treatment vessel 100 to provide rotational support for each support rod 201. The multiple support rods 201 are evenly distributed in a ring on the bottom of the inner cavity of the heat treatment vessel 100. Each support rod 201 has a heating rod 202 in its inner cavity. The bottom of the heat treatment vessel 100... The heating rod 202 is a hollow rod with multiple through openings on its outer arc surface. The heat treatment mechanism also includes locking sleeves 203 that are threaded to the upper end of the heating rod 202. The upper end of the heating rod 202 is provided with external threads that are threaded to the locking sleeves 203. The heat treatment mechanism also includes multiple positioning plates 204 that are respectively provided at the lower end of the locking sleeves 203. The multiple positioning plates 204 are circumferentially distributed at the lower edge of the locking sleeves 203. The outer surface of the positioning plates 204 is inclined downward from the outside to the inside. The lower end of the heating rod 202 is inverted conical.

[0022] The tubular non-magnetic steel workpieces to be processed are sequentially and movably sleeved onto the outside of the support rod 201. The design of the inverted conical lower end of the support rod 201 can accommodate tubular non-magnetic steel workpieces of different diameters. After sleeved, they are fixed to the upper end of the support rod 201 by locking screw sleeves 203. At the same time, the positioning plate 204 on it is inserted into the corresponding support rod 201. The positioning plate 204 provides stable clamping for tubular non-magnetic steel workpieces of different diameters. During heat treatment, the heating plate 200 and the heating rod 202 are activated synchronously, thereby radiating heat to the inner and outer walls of the workpiece simultaneously. The synergistic effect of the internal and external heat sources ensures that the inner and outer walls of the workpiece are heated synchronously, thereby shortening the heat treatment cycle and effectively suppressing the risk of deformation of the workpiece due to temperature gradient.

[0023] like Figure 1-4 As shown, the drive assembly includes a lower mounting cavity 300 disposed in the heat treatment vessel 100. A gear 301 is rotatably connected to the middle of the mounting cavity 300. A rotating hole for providing rotational support for the gear 301 is provided in the middle of the mounting cavity 300. The lower ends of the support rods 201 are all located in the mounting cavity 300. The lower ends of the support rods 201 are all provided with toothed rings 302, which are meshed with the gears 301. The drive assembly also includes a motor 303 disposed at the bottom of the heat treatment vessel 100. The output shaft of the motor 303 is fixedly connected to the lower end of the gear 301.

[0024] The motor 303 is started, and its output shaft drives the gear 301 to rotate. When the gear 301 rotates, it drives all the support rods 201 to rotate synchronously through the toothed ring 302 that meshes with it, so that the workpiece rotates at a uniform speed in the heat treatment kettle 100, thereby further improving the uniformity of heat treatment of tubular non-magnetic steel workpieces, significantly improving the uniformity of heat distribution, and avoiding local overheating or underheating.

[0025] The working principle of the non-magnetic steel heat treatment device provided by this utility model is as follows: First, the tubular non-magnetic steel workpiece to be treated is sequentially and movably sleeved onto the outside of the support rod 201. The design of the inverted conical lower end of the support rod 201 can accommodate tubular non-magnetic steel workpieces of different diameters. After sleeved, it is fixed to the upper end of the support rod 201 by the locking screw sleeve 203, and at the same time, the positioning plate 204 on it is inserted into the corresponding support rod 201. The positioning plate 204 provides stable clamping for tubular non-magnetic steel workpieces of different diameters. During heat treatment, the heating plate 200 and the heating rod 202 are started synchronously. Simultaneous radiative heating of the inner and outer walls of the workpiece ensures that the inner and outer walls are heated synchronously, thereby shortening the heat treatment cycle and effectively suppressing the risk of deformation caused by temperature gradient. At the same time, the motor 303 is started, and its output shaft drives the gear 301 to rotate. When the gear 301 rotates, it drives all the support rods 201 to rotate synchronously through the toothed ring 302 that meshes with it, so that the workpiece rotates at a uniform speed in the heat treatment kettle 100, thereby further improving the uniformity of heat treatment of tubular non-magnetic steel workpieces, significantly improving the uniformity of heat distribution, and avoiding local overheating or underheating.

[0026] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A heat treatment apparatus for non-magnetic steel, characterized in that: The device includes a heat treatment vessel (100) and a heat treatment mechanism disposed therein. The heat treatment mechanism includes a plurality of heating plates (200) disposed on the inner arc surface of the heat treatment vessel (100). A plurality of support rods (201) are rotatably connected to the bottom of the inner cavity of the heat treatment vessel (100). Each support rod (201) has a heating rod (202) in its inner cavity. The bottom of the heat treatment vessel (100) is also provided with a drive assembly for driving the support rods (201) to rotate.

2. The non-magnetic steel heat treatment apparatus as described in claim 1, characterized in that: The heating rod (202) is a hollow rod with multiple through openings on its outer arc surface.

3. The non-magnetic steel heat treatment apparatus as described in claim 1, characterized in that: The heat treatment mechanism also includes locking sleeves (203) that are threaded to the upper end of the heating rod (202).

4. The non-magnetic steel heat treatment apparatus as described in claim 3, characterized in that: The heat treatment mechanism also includes a plurality of positioning plates (204) respectively disposed at the lower end of the locking screw sleeve (203), and the outer surface of the positioning plates (204) is inclined downward from the outside to the inside.

5. The non-magnetic steel heat treatment apparatus as described in claim 1, characterized in that: The drive assembly includes a lower mounting cavity (300) disposed in the heat treatment vessel (100), a gear (301) is rotatably connected to the middle of the mounting cavity (300), the lower ends of the support rods (201) are all located in the mounting cavity (300), and the lower ends of the support rods (201) are all provided with toothed rings (302), which are meshed with the gears (301).

6. The non-magnetic steel heat treatment apparatus as described in claim 5, characterized in that: The drive assembly also includes a motor (303) disposed at the bottom of the heat treatment vessel (100), the output shaft of the motor (303) being fixedly connected to the lower end of the gear (301).

7. The non-magnetic steel heat treatment apparatus as described in claim 1, characterized in that: The lower ends of the heating rods (202) are all inverted conical.

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