Spheroidizing annealing heat treatment device for prolonging service life of low-carbon low-alloy steel

Abstract

The utility model discloses a spheroidizing annealing heat treatment device capable of prolonging the service life of low-carbon low-alloy steel, which relates to the technical field of spheroidizing annealing and comprises a spheroidizing annealing tank, the bottom of the spheroidizing annealing tank is fixedly mounted on a base, and a plurality of turntables are movably mounted on the base. A placing frame is fixedly mounted on the plurality of rotary tables; the placing rack is positioned in the spheroidizing annealing tank; a plurality of cooling gas conveying pipelines are fixedly mounted on the outer surface of the spheroidizing annealing tank; during use, separation between the top cover and the spheroidizing annealing tank is achieved in a hoisting mode, a workpiece is placed in the placing frame in a hoisting mode, after the workpiece is placed, the driving motor installed at the bottom of the base drives the driving gear to rotate, and the driving gear drives the multiple driven gears to rotate at the same time; and the driven gear is fixedly mounted on the turntable through a rotating shaft, so that the turntable drives the workpieces in the placement frame to transfer at a constant speed, and uniform spheroidizing annealing heat treatment on the workpieces is realized.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of spheroidizing annealing, in particular to a spheroidizing annealing heat treatment device for improving the service life of low-carbon low-alloy steel. Background Art

[0002] Alloy steel with a total alloying element content of less than 5% is called low alloy steel. Low alloy steel is relative to carbon steel. On the basis of carbon steel, one or more alloying elements are intentionally added to the steel in order to improve one or several properties of the steel. When the amount of alloy added exceeds the general content of carbon steel in normal production methods, this steel is called alloy steel. When the total alloy content is less than 5%, it is called low alloy steel. The alloy content between 5-10% is called medium alloy steel; more than 10% is called high alloy steel;

[0003] Spheroidizing annealing is mainly suitable for eutectoid steel and hypereutectoid steel, such as carbon tool steel, alloy tool steel, bearing steel, etc. These steels are air-cooled after rolling and forging, and the resulting structure is lamellar pearlite and network cementite. This structure is hard and brittle, not only difficult to cut, but also easy to deform and crack during the subsequent quenching process. The spheroidizing annealing results in a spherical pearlite structure, in which the cementite is spherical particles dispersed in the ferrite matrix. Compared with the lamellar pearlite, it not only has a low hardness and is easy to cut, but also the austenite grains are not easy to grow during quenching heating, and the workpiece has a small tendency to deform and crack during cooling. In addition, spheroidizing annealing can sometimes be used for some hypoeutectoid steels that need to improve cold plastic deformation (such as stamping, cold heading, etc.).

[0004] At present, the conventional spheroidizing annealing device can only anneal the workpiece in one direction when performing annealing heat treatment on the workpiece. Therefore, it takes a long time for the temperature to penetrate the entire workpiece. Therefore, the processing efficiency of the workpiece cannot be effectively improved when the workpiece is heat treated. Moreover, the conventional device will cause uneven heating of the workpiece when performing heat treatment. Therefore, after the heat treatment is completed, the workpiece cannot effectively meet the production requirements, resulting in the appearance of waste workpieces.

[0005] In view of the above situation, we provide a spheroidizing annealing heat treatment device for improving the service life of low-carbon low-alloy steel. In this device, when the workpiece is heat treated, the workpiece is placed in a placement rack inside the spheroidizing annealing tank, and the placement rack is fixedly installed on a turntable. The bottom of the turntable is installed with a driven gear through a rotating shaft, and multiple driven gears are meshed with the driving gear to achieve the effect of the driven gear driving the turntable to rotate. In this way, when the workpiece is heat treated, the rotation during the heat treatment is effectively guaranteed, which helps to ensure that the workpiece is heated evenly; by rotating the workpiece, when the heat treatment is performed, the heat treatment can be effectively started from multiple sides of the workpiece, which can greatly reduce the heat treatment time and effectively ensure the quality of workpiece processing. Utility Model Content

[0006] The purpose of the utility model is to provide a spheroidizing annealing heat treatment device for improving the service life of low-carbon low-alloy steel. In the device, a driving motor drives a driving gear to rotate, so that multiple driven gears on the edge of the driving gear rotate. When the driven gear rotates, the turntable rotates synchronously. In this way, when the heat treatment is carried out, the rotation of the placement rack is realized. In this way, when the turntable rotates, the rotation of the workpiece is effectively realized, which can greatly improve the efficiency of the heat treatment to solve the problems of the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A spheroidizing annealing heat treatment device for improving the service life of low-carbon low-alloy steel comprises a spheroidizing annealing tank, the bottom of which is fixedly mounted on a base, and a plurality of turntables are movably mounted on the base; a placing rack is fixedly mounted on the plurality of turntables; the placing rack is located inside the spheroidizing annealing tank; a workpiece is placed on the turntable and fixed by the placing rack, so as to prevent the workpiece from tilting when rotating, ensure that the workpiece is heat treated simultaneously through multiple surfaces when rotating, and effectively improve the efficiency of heat treatment;

[0009] As a further technical solution of the utility model, a plurality of cooling gas delivery pipelines are fixedly installed on the outer surface of the spheroidizing annealing tank, and the external cooling gas is transmitted to the inside of the spheroidizing annealing tank through the cooling gas delivery pipeline, so as to realize effective spheroidizing annealing treatment of the workpiece inside the spheroidizing annealing tank; when performing heat treatment, the waste heat recovery device arranged on the top cover is used to recover the waste heat; in this way, when performing heat treatment on the workpiece, the waste heat can be recycled, which greatly reduces the production cost during heat treatment;

[0010] As a further technical solution of the utility model, the turntable is fixedly installed with a driven gear arranged inside the base through a rotating shaft, and a plurality of the driven gears are simultaneously meshed with a driving gear installed in the middle position; the bottom of the driving gear is fixedly installed with a driving motor through a mounting frame; a plurality of driven gears are installed at the edge of the driving gear and mesh with each other, and the rotation of the driving gear drives the turntable to rotate by realizing the rotation of the plurality of driven gears, thereby realizing the rotation of the workpiece inside the placement frame, so that when performing heat treatment, the time for heat treatment of the workpiece is greatly reduced, and the efficiency of heat treatment is improved;

[0011] As a further technical solution of the utility model, the driving motor extends to the bottom of the base through a rotating shaft and is fixedly installed with the base.

[0012] As a further technical solution of the utility model, a top cover is provided at one end of the spheroidizing annealing tank away from the base for cooperative installation; a waste heat recovery device is fixedly installed on the top cover; symmetrical lifting ears are also integrally provided on both sides of the top of the top cover, and when placing the workpiece, the workpiece is placed inside the placement rack by lifting the top cover; the placement rack is limited to effectively ensure that the workpiece will not shake or tilt when rotating;

[0013] As a further technical solution of the utility model, the turntable rotates synchronously with the driven gear through the rotating shaft.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model, when in use, separates the top cover from the spheroidizing annealing tank by hoisting, and places the workpiece inside the placement rack by hoisting. After the workpiece is placed, the driving motor installed at the bottom of the base drives the driving gear to rotate, so that the driving gear drives multiple driven gears to rotate at the same time. The driven gear is fixedly installed with the rotating shaft and the turntable, so that the turntable drives the workpiece inside the placement rack to be transferred at a uniform speed, so as to achieve uniform spheroidizing annealing heat treatment of the workpiece;

[0016] 2. The utility model realizes the heat treatment effect on the workpiece while the workpiece is rotating, thus ensuring that the workpiece is heated evenly and greatly reducing the heat treatment time of the workpiece. By arranging multiple placement racks and turntables inside the spheroidizing annealing tank, the effect of heat treatment on multiple workpieces at the same time can be achieved;

[0017] 3. In the utility model, during the heat treatment process, the waste heat recovery device installed on the top cover is used to recover the waste heat during the heat treatment process. A pressure gauge is installed on the waste heat recovery device. When the waste temperature reaches a certain amount, the waste heat recovery device is used to effectively transmit the waste temperature inside the spheroidizing annealing tank. In this way, the collected waste temperature can be recycled and the production cost during the heat treatment can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0019] Figure 2 This utility model Figure 1 Schematic diagram of the internal structure.

[0020] Figure 3 This utility model Figure 2 Schematic diagram of the bottom structure disassembly.

[0021] Figure 4 This utility model Figure 3Another perspective structural diagram of .

[0022] Figure 5 This utility model Figure 4 Side view of.

[0023] In the figure: 1-base, 2-spheroidizing annealing tank, 3-top cover, 4-placing rack, 5-turntable, 6-driven gear, 7-driving gear, 8-driving motor, 9-rotating shaft, 10-cooling gas delivery pipeline, 11-waste heat recovery device. 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] See also Figure 1-5 In the embodiment of the utility model, a spheroidizing annealing heat treatment device for improving the service life of low-carbon low-alloy steel includes a spheroidizing annealing tank 2, the bottom of which is fixedly mounted on a base 1, and a plurality of turntables 5 are movably mounted on the base 1; a placement rack 4 is fixedly mounted on the plurality of turntables 5; the placement rack 4 is located inside the spheroidizing annealing tank 2;

[0026] A plurality of cooling gas delivery pipelines 10 are fixedly installed on the outer surface of the spheroidizing annealing tank 2 .

[0027] Specifically, the turntable 5 is fixedly mounted on the driven gear 6 provided inside the base 1 via a rotating shaft 9, and a plurality of the driven gears 6 are simultaneously meshed with a driving gear 7 installed in the middle; the bottom of the driving gear 7 is fixedly mounted on the driving motor 8 via a mounting frame.

[0028] By adopting the above technical solution, when in use, the top cover 3 and the spheroidizing annealing tank 2 are separated by hoisting, and the workpiece is placed inside the placement rack 4 by hoisting. After the workpiece is placed, the driving motor 8 installed at the bottom of the base 1 drives the driving gear 7 to rotate, so that the driving gear 7 drives multiple driven gears 6 to rotate at the same time. The driven gear 6 is fixedly installed with the turntable 5 through the rotating shaft 9, so that the turntable 5 drives the workpiece inside the placement rack 4 to be transferred at a uniform speed, so as to achieve uniform spheroidizing annealing heat treatment of the workpiece;

[0029] The driving motor 8 extends to the bottom of the base 1 through a rotating shaft and is fixedly mounted to the base 1 .

[0030] In this embodiment, a top cover 3 is provided at one end of the spheroidizing annealing tank 2 away from the base 1 for cooperative installation; a waste heat recovery device 11 is fixedly installed on the top cover 3; and symmetrical lifting ears are integrally provided on both sides of the top of the top cover 3.

[0031] By adopting the above technical solution, the heat treatment effect of the workpiece is achieved while the workpiece is rotating, which ensures that the workpiece is heated evenly and can greatly reduce the time of heat treatment of the workpiece. By arranging multiple placement racks 4 and turntables 5 inside the spheroidizing annealing tank 2, the effect of heat treatment of multiple workpieces at the same time can be achieved.

[0032] In this embodiment, the rotating disk 5 rotates synchronously with the driven gear 6 via the rotating shaft 9 .

[0033] By adopting the above technical solution, during the heat treatment process, the waste heat recovery device 11 installed on the top cover 3 is used to recover the waste heat during the heat treatment process. A pressure gauge is installed on the waste heat recovery device 11. When the waste temperature reaches a certain amount, the waste heat recovery device 11 is used to effectively transmit the waste temperature inside the spheroidizing annealing tank 2. In this way, the collected waste temperature can be recycled and the production cost during the heat treatment can be reduced.

[0034] The working principle of the utility model is as follows: when in use, the top cover 3 is separated from the spheroidizing annealing tank 2 by hoisting, and the workpiece is placed inside the placement rack 4 by hoisting. After the workpiece is placed, the driving motor 8 installed at the bottom of the base 1 drives the driving gear 7 to rotate, so that the driving gear 7 drives multiple driven gears 6 to rotate at the same time. The driven gear 6 is fixedly installed with the turntable 5 through the rotating shaft 9, so that the turntable 5 drives the workpiece inside the placement rack 4 to be transferred at a uniform speed, so as to achieve uniform spheroidizing annealing heat treatment of the workpiece;

[0035] During the rotation of the workpiece, the heat treatment effect of the workpiece is achieved, which ensures that the workpiece is heated evenly and can greatly reduce the time of heat treatment of the workpiece. By arranging multiple placement racks 4 and turntables 5 inside the spheroidizing annealing tank 2, the effect of heat treatment of multiple workpieces can be achieved at the same time.

[0036] During the heat treatment process, the waste heat recovery device 11 installed on the top cover 3 is used to recover the waste heat during the heat treatment process. A pressure gauge is installed on the waste heat recovery device 11. When the waste temperature reaches a certain amount, the waste heat recovery device 11 is used to effectively transmit the waste temperature inside the spheroidizing annealing tank 2. In this way, the collected waste temperature can be recycled and the production cost during the heat treatment can be reduced.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A spheroidizing annealing heat treatment device for increasing the service life of low-carbon low-alloy steel, characterized in that: It comprises a spheroidizing annealing tank (2), the bottom of which is fixedly mounted on a base (1), and a plurality of rotating disks (5) are movably mounted on the base (1); a placement rack (4) is fixedly mounted on the plurality of rotating disks (5); the placement rack (4) is located inside the spheroidizing annealing tank (2); A plurality of cooling gas delivery pipelines (10) are fixedly installed on the outer surface of the spheroidizing annealing tank (2).

2. The spheroidizing annealing heat treatment device for increasing the service life of low-carbon low-alloy steel according to claim 1, characterized in that: The rotating disk (5) is fixedly mounted on a driven gear (6) disposed inside the base (1) via a rotating shaft (9); a plurality of driven gears (6) are simultaneously meshed with a driving gear (7) installed at a middle position; the bottom of the driving gear (7) is fixedly mounted on a driving motor (8) via a mounting frame.

3. The spheroidizing annealing heat treatment device for increasing the service life of low-carbon low-alloy steel according to claim 2, characterized in that: The driving motor (8) extends to the bottom of the base (1) via a rotating shaft and is fixedly mounted on the base (1).

4. The spheroidizing annealing heat treatment device for increasing the service life of low-carbon low-alloy steel according to claim 3, characterized in that: The spheroidizing annealing tank (2) is provided with a top cover (3) at one end away from the base (1) for cooperative installation; a waste heat recovery device (11) is fixedly installed on the top cover (3); and symmetrical lifting ears are integrally provided on both sides of the top of the top cover (3).

5. The spheroidizing annealing heat treatment device for increasing the service life of low-carbon low-alloy steel according to claim 4, characterized in that: The rotating disk (5) rotates synchronously with the driven gear (6) via the rotating shaft (9).

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