Heat treatment equipment for nickel-based alloy forge piece machining

Abstract

The utility model relates to the technical field of nickel-based alloy forge piece machining, in particular to heat treatment equipment for nickel-based alloy forge piece machining, which comprises a resistance furnace, a turntable is arranged at the bottom of the resistance furnace, and a tray is fixedly connected to the top of the turntable; a motor drives a driving gear to rotate and then drives an engaged driven gear to drive a connecting wheel on a ceramic rotating rod to rotate, so that a tray on a rotating disc connected with an end face gear and a nickel-based alloy forge piece placed on the top of the tray can be uniformly heated in the rotating process, and the situation that the temperature of an area close to a heating element is relatively high is avoided; and the temperature of the part far away from the heating element may be low, and for the nickel-based alloy forge piece, the problem of inconsistent structure transformation of different parts of the forge piece may be caused by the non-uniform temperature.

Description

Technical Field

[0001] This utility model relates to the field of nickel-based alloy forging processing technology, specifically to a heat treatment device for processing nickel-based alloy forgings. Background Technology

[0002] Forging is a processing procedure in which metal is subjected to pressure and plastically deformed into a desired shape or subject to appropriate compressive force. This is typically achieved using a hammer or press. The forging process creates a fine granular structure and improves the physical properties of the metal. Forgings require heat treatment, which is performed using heat treatment equipment. This equipment utilizes the heat generated by passing an electric current through a resistance wire to heat the workpiece. When the current passes through a high-resistance heating element (such as a nickel-chromium alloy resistance wire), electrical energy is converted into heat energy and transferred to the forging through radiation and convection.

[0003] Existing technology, such as publication number CN222389869U, provides a heat treatment device for processing nickel-based alloy forgings, including a base, a heat treatment box on the top of the base, heating wires on both sides of the inner cavity of the heat treatment box, a filter box on the left side of the heat treatment box, an air outlet on the top of the filter box, and concave plates on the top of both sides of the inner cavity of the filter box, with filter screens clamped into the inner cavity of the concave plates. In this invention, the forging is first placed on a support plate, the heating wires are activated, and the forging is heat-treated by the heating wires. When exhaust gas treatment is required, a fan operates, and the exhaust gas in the heat treatment box is introduced into a guide pipe, then transmitted through the guide pipe to a connecting pipe, then through the connecting pipe to an inlet pipe, then through the inlet pipe to the fan, then through the fan to an outlet pipe, and finally through the outlet pipe to spray the exhaust gas onto the filter screen.

[0004] While existing box-type resistance furnaces can provide a relatively uniform temperature field, temperature differences may still exist in different locations within the furnace. This is because factors such as the distribution of heating elements, the furnace structure, and the placement of the workpiece all affect temperature uniformity. For example, areas closer to the heating elements may have relatively higher temperatures, while areas farther away may have lower temperatures. For nickel-based alloy forgings, this temperature inhomogeneity can lead to inconsistent microstructural transformations in different parts of the forging. Nickel-based alloys are highly sensitive to temperature during heat treatment. For instance, the solution treatment temperature range for nickel-based superalloys is typically narrow, and temperature inhomogeneity may prevent alloying elements in some areas from fully dissolving, affecting the alloy's properties. Box-type resistance furnaces may also experience oxide scale flaking during the processing of nickel-based alloy forgings. During heating and cooling, the coefficients of thermal expansion of the oxide scale and the nickel-based alloy forging matrix differ. For example, nickel-based alloys expand during heating, and the oxide scale formed on their surface also expands, but to different degrees. When heating or cooling rates are too rapid, the difference in thermal expansion and contraction leads to thermal stress. If this thermal stress exceeds the bonding force between the oxide scale and the substrate, the oxide scale will detach from the forging surface. When a large amount of scale accumulates inside the box-type resistance furnace, it hinders heat transfer. The scale itself is a poor conductor of heat, impeding the uniform radiation of heat to the nickel-based alloy forging. Therefore, we propose a heat treatment device for processing nickel-based alloy forgings. Utility Model Content

[0005] The purpose of this invention is to provide a heat treatment device for processing nickel-based alloy forgings. This heat treatment device solves the problem that the temperature in the area near the heating element is relatively high, while the temperature in the part far from the heating element may be low. For nickel-based alloy forgings, this uneven temperature may lead to inconsistent microstructural transformation in different parts of the forging.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A heat treatment device for processing nickel-based alloy forgings includes an electric resistance furnace, wherein a turntable is provided at the bottom of the electric resistance furnace and a tray is fixedly connected to the top of the turntable.

[0008] A face gear is fixedly connected to the top of the tray, and a connecting wheel is meshed with the face gear. A ceramic rotating rod is rotatably connected to the back of the resistance furnace at the position corresponding to the connecting wheel through a ceramic bushing, and one end of the ceramic rotating rod inside the resistance furnace is fixedly connected to the connecting wheel.

[0009] Preferably, a driven gear is fixedly connected to one end of the ceramic rotating rod outside the resistance furnace, a motor is fixedly connected to the back of the resistance furnace, a driving gear is fixedly connected to the output shaft of the motor, and the driving gear is meshed with the driven gear.

[0010] Preferably, the heating resistance wires inside the resistance furnace are arranged on both sides of the resistance furnace.

[0011] Preferably, the turntable consists of a base, a support plate, a through hole, and a drawer. The base is fixedly connected to the bottom of the inner wall of the resistance furnace, and the support plate is rotatably connected to the top of the base.

[0012] Preferably, a plurality of the through holes are formed on the top of the support plate and arranged in a spiral shape, and the drawer is slidably connected to the inner wall of the base.

[0013] Preferably, a cleaning component is provided at the bottom of the inner wall of the resistance furnace for cleaning the top of the support plate.

[0014] Preferably, the cleaning assembly consists of a scraper, a support rod, and a vertical rod. The vertical rod is fixedly connected to the bottom of the inner wall of the electric resistance furnace, the support rod is slidably connected to the outer wall of the vertical rod, and the scraper is fixedly connected to the end of the support rod away from the vertical rod, with the scraper in contact with the support plate.

[0015] By employing the above technical solution, this utility model provides a heat treatment device for processing nickel-based alloy forgings. It possesses at least the following beneficial effects:

[0016] I. This utility model uses a motor to drive the drive gear to rotate, which in turn drives the meshing driven gear to rotate the connecting wheel on the ceramic rotating rod. This allows the tray on the turntable connected to the end face gear to be heated evenly on top of the nickel-based alloy forging during rotation. This avoids the problem that the temperature of the area near the heating element is relatively high, while the temperature of the part far from the heating element may be low. For nickel-based alloy forgings, this uneven temperature may lead to inconsistent microstructure transformation in different parts of the forging.

[0017] II. In this utility model, when the support plate inside the turntable rotates, it will come into contact with the scraper in the cleaning component. As the scraper slides on the top of the support plate, it pushes some of the peeling skin collected on the top of the forging into the drawer below the through hole for storage. This makes it convenient to take out the drawer for centralized processing and avoids the accumulation of too much skin inside, which would affect the heat transfer. Skin itself is a poor conductor of heat and would hinder the uniform radiation of heat to the nickel-based alloy forging. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the cleaning component in this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the turntable in this utility model.

[0023] In the diagram: 1. Resistance furnace; 2. Turntable; 21. Base; 22. Support plate; 23. Through hole; 24. Drawer box; 3. Tray; 4. Motor; 41. Drive gear; 42. Driven gear; 43. Ceramic rotating rod; 44. Ceramic bushing; 45. Connecting wheel; 46. End face gear; 5. Cleaning assembly; 51. Scraper; 52. Support rod; 53. Upright pole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] A heat treatment device for machining nickel-based alloy forgings, such as Figure 1 - Figure 4 As shown, the device includes a resistance furnace 1, a turntable 2 at the bottom of the resistance furnace 1, a tray 3 fixedly connected to the top of the turntable 2, an end face gear 46 fixedly connected to the top of the tray 3, a connecting wheel 45 meshing with the end face gear 46, a ceramic rotating rod 43 rotatably connected to the back of the resistance furnace 1 corresponding to the position of the connecting wheel 45 via a ceramic bushing 44, and one end of the ceramic rotating rod 43 inside the resistance furnace 1 fixedly connected to the connecting wheel 45, and a driven gear 42 fixedly connected to the other end of the ceramic rotating rod 43 outside the resistance furnace 1, a motor 4 fixedly connected to the back of the resistance furnace 1, a driving gear 41 fixedly connected to the output shaft of the motor 4, and the driving gear 41 meshing with the driven gear 42, and resistance wires for heating inside the resistance furnace 1 are arranged on both sides of the resistance furnace 1.

[0026] In this embodiment, the nickel-based alloy forging to be processed is placed on top of the tray 3. The motor 4 drives the drive gear 41 to rotate, which in turn drives the meshing driven gear 42 to rotate the connecting wheel 45 on the ceramic rotating rod 43. This allows the nickel-based alloy forging placed on top of the tray 3 on the turntable 2 connected to the end face gear 46 to be heated evenly during rotation. This avoids the problem of uneven temperature in areas near the heating element and areas far from the heating element, which could lead to inconsistent microstructure transformation in different parts of the forging. Furthermore, the use of the ceramic rotating rod 43 and ceramic bushing 44 for power transmission provides excellent heat insulation, effectively preventing heat loss from the inside of the resistance furnace 1.

[0027] like Figure 2 , Figure 3 , Figure 4 As shown, preferably, the turntable 2 consists of a base 21, a support plate 22, through holes 23, and a drawer 24. The base 21 is fixedly connected to the bottom of the inner wall of the resistance furnace 1, the support plate 22 is rotatably connected to the top of the base 21, and several through holes 23 are opened on the top of the support plate 22 and arranged in a spiral shape. The drawer 24 is slidably connected to the inner wall of the base 21. A cleaning component 5 is provided at the bottom of the inner wall of the resistance furnace 1 for cleaning the top of the support plate 22. The cleaning component 5 consists of a scraper 51, a support rod 52, and a vertical rod 53. The vertical rod 53 is fixedly connected to the bottom of the inner wall of the resistance furnace 1, the support rod 52 is slidably connected to the outer wall of the vertical rod 53, and the scraper 51 is fixedly connected to the end of the support rod 52 away from the vertical rod 53, and the scraper 51 is in contact with the support plate 22.

[0028] In this embodiment, when the support disk 22 inside the turntable 2 rotates, it will contact the scraper 51 in the cleaning component 5. As the scraper 51 slides on the top of the support disk 22, it pushes some of the peeling skin collected on the top of the forging into the drawer box 24 below the through hole 23 for storage. This makes it convenient to take out the drawer box 24 for centralized processing, avoiding the accumulation of too much skin inside, which would affect the heat transfer. Skin itself is a poor conductor of heat and would hinder the uniform radiation of heat to the nickel-based alloy forging. Furthermore, since the scraper 51 can slide freely on the upright 53, the scraper 51 is always in contact with the support disk 22 under the action of gravity. This avoids the problem of the scraper 51 not being in close contact with the support disk 22 due to wear during long-term use, which would lead to a decrease in the scraping effect.

[0029] In use, the heat treatment equipment for processing nickel-based alloy forgings of this utility model places the nickel-based alloy forgings to be processed on the tray 3. The motor 4 drives the drive gear 41 to rotate, which in turn drives the meshing driven gear 42 to rotate the connecting wheel 45 on the ceramic rotating rod 43. This allows the tray 3 on the turntable 2, connected to the end face gear 46, to be heated evenly during rotation. When the support plate 22 inside the turntable 2 rotates, it comes into contact with the scraper 51 in the cleaning component 5. As the scraper 51 slides on the top of the support plate 22, it pushes some of the peeling skin collected on the top of the support plate 22 into the drawer 24 below the through hole 23 for storage, so that it can be easily removed from the drawer 24 for centralized processing.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat treatment apparatus for processing of nickel-based alloy forgings, comprising an electric resistance furnace (1), characterized in that: The bottom of the resistance furnace (1) is provided with a rotating disc (2), and the top of the rotating disc (2) is fixedly connected with a tray (3). The top of the tray (3) is fixedly connected with an end face gear (46), the end face gear (46) is meshingly connected with a connecting wheel (45), and the back surface of the resistance furnace (1) is rotatably connected with a ceramic rotating rod (43) through a ceramic shaft sleeve (44) at a position corresponding to the connecting wheel (45), and one end of the ceramic rotating rod (43) in the resistance furnace (1) is fixedly connected with the connecting wheel (45).

2. The heat treatment apparatus for nickel-based alloy forging processing according to claim 1, characterized in that: One end of the ceramic rotating rod (43) outside the resistance furnace (1) is fixedly connected with a driven gear (42), the back surface of the resistance furnace (1) is fixedly connected with a motor (4), the output shaft of the motor (4) is fixedly connected with a driving gear (41), and the driving gear (41) is meshingly connected with the driven gear (42).

3. The heat treatment apparatus for nickel-based alloy forging processing according to claim 1, characterized in that: The resistance wire for heating in the resistance furnace (1) is arranged on both sides of the resistance furnace (1).

4. The heat treatment apparatus for nickel-based alloy forging processing according to claim 1, characterized in that: The rotating disc (2) is composed of a base (21), a supporting disc (22), a through hole (23) and a drawer (24), the base (21) is fixedly connected to the bottom of the inner wall of the resistance furnace (1), and the supporting disc (22) is rotatably connected to the top of the base (21).

5. The heat treatment apparatus for processing of nickel-based alloy forgings as claimed in claim 4 wherein: A plurality of through holes (23) are arranged on the top of the supporting disc (22) in a spiral shape, and the drawer (24) is slidably connected to the inner wall of the base (21).

6. The heat treatment apparatus for processing a nickel-based alloy forge piece according to claim 5, characterized by: The bottom of the inner wall of the resistance furnace (1) is provided with a cleaning assembly (5) for cleaning the top of the supporting disc (22).

7. The heat treatment apparatus for processing a nickel-based alloy forge piece according to claim 6, characterized by: The cleaning assembly (5) is composed of a scraper (51), a supporting rod (52) and a vertical rod (53), the vertical rod (53) is fixedly connected to the bottom of the inner wall of the resistance furnace (1), the supporting rod (52) is slidably connected to the outer wall of the vertical rod (53), the scraper (51) is fixedly connected to one end of the supporting rod (52) away from the vertical rod (53), and the scraper (51) is in contact with the supporting disc (22).

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