Ring swaging heat treatment device

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By designing a heat treatment device for ring forgings, a scraper and cylinder drive system are used to simultaneously clean the oxide layer, solving the problem of difficult removal of the oxide layer after quenching of ring forgings. This improves surface accuracy and production efficiency, and reduces cleaning costs and the risk of micro-defects.

CN224578301UActive Publication Date: 2026-07-31SHANXI ZHONGXIANG RING FORGING CO LTD

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: SHANXI ZHONGXIANG RING FORGING CO LTD
Filing Date: 2025-07-04
Publication Date: 2026-07-31

AI Technical Summary

Technical Problem

The oxide layer on existing ring forgings is difficult to remove effectively after quenching, resulting in decreased surface finish and dimensional accuracy deviating from design requirements. Furthermore, traditional cleaning processes are complex, costly, and prone to causing microscopic defects and chemical corrosion risks.

Method used

Design a heat treatment device for ring forgings, which uses a first scraper and a second scraper to contact the four sides of the ring forgings and simultaneously clean the oxide layer. Combined with a cylinder drive system, it can adapt to different thicknesses and inner diameters to achieve automated continuous operation.

Benefits of technology

This technology enables simultaneous cleaning of the oxide layer during the quenching process, improving surface precision, reducing cleaning difficulty and cost, minimizing microscopic defects, and enhancing production efficiency and environmental friendliness.

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Abstract

This utility model provides a heat treatment device for ring forgings, belonging to the field of ring forging processing equipment. It includes a quenching box with a base connected to its bottom. The base has a first scraper at its end, the end face of which abuts against the end face of the ring forging closest to the base. Above the first scraper is a second scraper, which includes a horizontal plate that abuts against the end of the ring forging furthest from the base, and a vertical plate that abuts against the inner surface of the ring forging. This utility model is applicable when quenching ring forgings by placing the ring forging on the base, with the first and second scrapers contacting all four sides of the ring forging to clean the oxide layer generated on the surface of the ring forging during quenching.

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Description

Technical Field

[0001] This utility model relates to the field of ring forging processing equipment, and specifically to a heat treatment device for ring forgings. Background Technology

[0002] In the field of ring forging machining, heat treatment is a key process for improving its mechanical properties. Quenching, as an important step, can significantly improve the hardness and strength of ring forgings through rapid cooling. However, during the quenching process, the surface of the ring forging undergoes an oxidation reaction with air at high temperatures, forming a hard and firmly adhered oxide layer (oxide scale). The presence of this oxide layer has several negative impacts: on the one hand, it severely damages the surface finish of the ring forging, causing its dimensional accuracy to deviate from design requirements and increasing the difficulty and cost of subsequent machining; on the other hand, the oxide layer may embed into the workpiece surface, forming microscopic defects that become stress concentration points when subjected to loads, thereby affecting the mechanical properties and service life of the ring forging.

[0003] In existing technologies, traditional ring forgings often require offline cleaning processes after quenching. Offline cleaning necessitates a separate step, distinct from the quenching process, resulting in a lengthy production flow (such as sandblasting, pickling, or manual scraping) to remove the oxide layer. This type of process has significant limitations: once the oxide layer cools and solidifies, it bonds more tightly to the workpiece, making cleaning significantly more difficult as the degree of solidification increases. Sandblasting requires increased pressure for effective removal and easily forms micro-pits on the surface, affecting surface accuracy; pickling requires prolonged chemical contact time, exacerbating the risk of chemical corrosion, especially for thin-walled or high-precision workpieces, potentially leading to dimensional deviations. Utility Model Content

[0004] In view of this, the present invention provides a heat treatment device for ring forgings, which can clean the oxide layer generated on the surface of the ring forgings during quenching by placing the ring forgings on a base and having the first scraper and the second scraper contact the four sides of the ring forgings.

[0005] To solve the above-mentioned technical problems, this utility model provides a heat treatment device for ring forgings, including a quenching box, a base connected to the bottom of the quenching box, and a first scraper provided at the end of the base. The end face of the first scraper abuts against the end face of the ring forging near the base, and is used to clean the oxide layer generated on the end face of the ring forging near the base.

[0006] A second scraper, comprising a horizontal plate and a vertical plate, is positioned above the first scraper. The horizontal plate abuts against the end of the ring forging furthest from the base, securing the top of the ring forging and cleaning away any oxide layer that forms on it, preventing the ring forging from shifting during quenching. The vertical plate abuts against the inner surface of the ring forging, cleaning away any oxide layer that forms on the inner surface and providing radial positioning to ensure the ring forging remains centered during rotation. The base has linearly arranged slots located on the side of the first scraper closest to the outer surface of the base. A first cylinder is positioned within these slots, its output connected to the second scraper. The extension and retraction of the first cylinder pushes the horizontal plate of the second scraper up and down, allowing it to abut against the end faces of ring forgings of varying thicknesses, thus accommodating ring forgings of different thicknesses.

[0007] A second cylinder is installed inside the horizontal plate. The output end of the second cylinder is connected to the vertical plate. By extending and retracting the second cylinder, the position of the vertical plate can be adjusted. For example, the pressure of the vertical plate on the inner surface of the ring forging can be adjusted, or the extension and retraction of the vertical plate can be controlled in different processes such as feeding. This allows the vertical plate to not only position the ring forging but also adapt to ring forgings with different inner diameters.

[0008] The clearance groove on the base is located on the side of the first scraper away from the first cylinder and is arranged perpendicular to the vertical plate. Its function is to provide space for the movement of the vertical plate, so as to avoid interference between the vertical plate and the end face of the base when the thickness of the ring forging is thin and the horizontal plate drives the vertical plate to move downward, which would prevent the horizontal plate from contacting the end face of the ring forging. The vertical plate can slide in the clearance groove in the direction of the output end of the second cylinder.

[0009] A third cylinder is located on the base near the feed inlet. The output end of the third cylinder is connected to a baffle plate, the end of which is flush with the end of the quenching box. When the ring forging is placed into the quenching box, it falls from the end of the vertical plate away from the horizontal plate onto the base. At this point, the ring forging protrudes from the base. The third cylinder is activated, and the baffle plate retracts, moving the ring forging towards the first cylinder. The end of the vertical plate near the base forms a feed inlet with the base. The ring forging slides from the feed inlet to the position near the first cylinder. Then, the first and second scrapers abut against the ring forging. A drive unit on the base abuts against the inner surface of the ring forging, its function being to rotate the ring forging, ensuring that the ring forging is heated or cooled evenly during the quenching process. Furthermore, as the ring forging rotates, the first and second scrapers can clean the oxide layer generated on the ring forging.

[0010] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0011] 1. Simultaneous removal of oxide layer during quenching: The first and second scrapers contact the bottom, top, and inner surfaces of the ring forging to directly scrape off the surface oxide layer during quenching, avoiding the oxide layer from solidifying and adhering after cooling, thus reducing potential damage to surface precision and internal quality.

[0012] 2. Adjustable and highly adaptable structure: The first cylinder in the slotted base drives the second scraper to rise and fall, adapting to ring forgings of different thicknesses. The second cylinder in the horizontal plate drives the vertical plate to extend and retract, adapting to the cleaning needs of the inner surface of ring forgings with different inner diameters, achieving "one machine for multiple uses".

[0013] 3. Improve production efficiency: The cleaning process is integrated with the quenching process, reducing the process connection time of traditional offline cleaning, avoiding workpiece transfer losses, and realizing automated continuous operation.

[0014] The driving component drives the ring forging to rotate, which, together with the scraper, cleans in all directions, improving cleaning efficiency and uniformity.

[0015] 4. Reduced costs and pollution: The mechanical scraping method eliminates the need for consumables (sand and chemical agents) in traditional processes such as sandblasting and acid washing, thus reducing consumable costs and environmental treatment costs.

[0016] Avoid sandblasting impact damage or acid pickling corrosion of the substrate, reduce the risk of workpiece scrap, and lower the scrap rate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of a heat treatment device for ring forgings according to the present invention;

[0018] Figure 2 This is a schematic diagram of the left-side structure of this utility model;

[0019] Figure 3 This is a cross-sectional structural diagram of the base of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Quenching box; 2. Base; 3. First scraper; 4. Horizontal plate; 5. Vertical plate; 6. Slot; 7. First cylinder; 8. Second cylinder; 9. Clearance groove; 10. Feed inlet; 11. Third cylinder; 12. Baffle; 13. Drive component. Detailed Implementation

[0021] 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 1-3 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.

[0022] like Figure 1-3 As shown:

[0023] This embodiment provides a heat treatment device for ring forgings, including a quenching box 1, a base 2 connected to the bottom of the quenching box 1, and a first scraper 3 provided at the end of the base 2. The end face of the first scraper 3 abuts against the end face of the ring forging near the base 2, which can clean the oxide layer generated on the end face of the ring forging.

[0024] like Figure 1 , 2 As shown in Figure 3:

[0025] A second scraper is provided above the first scraper 3. The second scraper consists of a horizontal plate 4 and a vertical plate 5. The horizontal plate 4 abuts against the end of the ring forging away from the base 2, which serves to fix the top of the ring forging and prevent it from moving up and down during quenching, and also to clean the oxide layer generated on the top. The vertical plate 5 abuts against the inner surface of the ring forging, which not only cleans the oxide layer generated on the inner surface of the ring forging, but also serves to provide radial positioning, ensuring that the ring forging maintains its centered position when rotating.

[0026] like Figure 2 , 3 As shown:

[0027] The base 2 has linearly arranged slots 6 located on the side of the first scraper 3 near the outer surface of the base 2. A first cylinder 7 is installed in the slot 6, and the output end of the first cylinder 7 is connected to the second scraper. Through the extension and retraction of the first cylinder 7, the horizontal plate 4 in the second scraper can be pushed up and down, so that the horizontal plate 4 can abut against the end face of ring forgings of different thicknesses to accommodate ring forgings of different thicknesses.

[0028] like Figure 1 , 2 As shown in Figure 3:

[0029] A second cylinder 8 is installed inside the horizontal plate 4. The output end of the second cylinder 8 is connected to the vertical plate 5. By extending and retracting the second cylinder 8, the position of the vertical plate 5 can be adjusted. For example, the pressure of the vertical plate 5 on the inner surface of the ring forging can be adjusted, or the extension and retraction of the vertical plate 5 can be controlled in different processes such as feeding, so that the vertical plate 5 can not only position the ring forging, but also adapt to ring forgings with different inner diameters.

[0030] like Figure 1 , 2 As shown in Figure 3:

[0031] The base 2 is provided with a clearance groove 9, which is located on the side of the first scraper 3 away from the first cylinder 7 and is arranged perpendicularly to the vertical plate 5. Its function is to provide space for the movement of the vertical plate 5. This can avoid interference between the vertical plate 5 and the end face of the base 2 when the thickness of the ring forging is thin, so that the horizontal plate 4 can not contact the end face of the ring forging. At the same time, the vertical plate 5 can slide in the clearance groove 9 in the direction of operation of the output end of the second cylinder 8.

[0032] like Figure 1 , 2 As shown:

[0033] A third cylinder 11 is installed on the side of the base 2 near the feed inlet 10. The output end of the third cylinder 11 is connected to a baffle 12, the end of which is flush with the end of the quenching box 1. When the ring forging is placed into the quenching box 1, it falls from the end of the vertical plate 5 away from the horizontal plate 4 onto the base 2, at which point the ring forging protrudes from the base 2. The third cylinder 11 is activated, and the baffle 12 retracts, moving the ring forging toward the first cylinder 7. The feed inlet 10 is formed between the end of the vertical plate 5 near the base 2 and the base 2. The ring forging slides from the feed inlet 10 to the position near the first cylinder 7, where the first scraper 3 and the second scraper press against it.

[0034] like Figure 1 , 2 As shown in Figure 3:

[0035] The drive component 13 on the base 2 abuts against the inner surface of the ring forging. The drive component 13 is a drive motor that can move on the base 2. The drive motor is an IP67 / IP68 waterproof motor. It adopts a fully enclosed shell, rubber sealing ring, epoxy resin potting and other processes to prevent water and dust from entering. The drive motor in the quenching box 1 can move back and forth through push rods, etc., which makes it easy to abut against ring forgings of different diameters. The output end of the drive motor is connected to the rotating shaft and abuts against the inner surface of the ring forging. The function of the output end of the drive motor is to drive the ring forging to rotate, so that the ring forging can be heated or cooled evenly during the quenching process. When the ring forging rotates, the first scraper 3 and the second scraper can clean the oxide layer generated on the ring forging.

[0036] Working principle: The ring forging is placed on the base 2, with the end face of the ring forging closest to the base 2 contacting the end face of the first scraper 3 at the end of the base 2. The second scraper above the first scraper 3 includes a horizontal plate 4 and a vertical plate 5. The horizontal plate 4 contacts the end of the ring forging away from the base 2, and the vertical plate 5 contacts the inner surface of the ring forging. A first cylinder 7 is installed in the slot 6 on the base 2. The output end of the first cylinder 7 is connected to the second scraper, which can drive the second scraper to rise and fall to accommodate ring forgings of different thicknesses. The output end of the second cylinder 8 in the horizontal plate 4 is connected to the vertical plate 5, which can drive the vertical plate 5 to extend and retract to meet the inner surface cleaning requirements of ring forgings with different inner diameters. The drive component 13 on the base 2 contacts the inner surface of the ring forging, causing the ring forging to rotate. Together with the first scraper 3 and the second scraper, the ring forging's bottom, top, and inner surfaces are contacted, and the oxide layer generated on the surface of the ring forging is scraped off simultaneously during the quenching process. The clearance groove 9 on the base 2 is located on the side of the first scraper 3 away from the first cylinder 7 and is arranged perpendicularly to the vertical plate 5. The vertical plate 5 near the base 2 forms a feed port 10 between itself and the base 2 so that the ring forging can be placed. The output end of the third cylinder 11 near the feed port of the base 2 is provided with a baffle 12. The end of the baffle 12 is flush with the end of the quenching box 1, which can push the ring forging to the bottom of the horizontal plate 4.

[0037] 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.

[0038] 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 ring swaging heat treatment device, comprising a quenching box (1), the bottom of the quenching box (1) is connected with a base (2), characterized in that: The base (2) has a first scraper (3) at its end, and the end face of the first scraper (3) abuts against the end face of the ring forging near the base (2); The first scraper (3) has a second scraper above it. The second scraper includes a horizontal plate (4) that abuts against the end of the ring forging away from the base (2). The second scraper also includes a vertical plate (5) that abuts against the inner surface of the ring forging.

2. A swage heat treatment apparatus as claimed in claim 1, wherein: The base (2) has a slot (6) located on the side of the first scraper (3) near the outer surface of the base (2). The slots (6) are arranged in a linear pattern. A first cylinder (7) is located in the slot (6). The output end of the first cylinder (7) is connected to the second scraper.

3. A swage heat treatment apparatus as claimed in claim 2, wherein: The horizontal plate (4) contains a second cylinder (8), and the vertical plate (5) is located at the output end of the second cylinder (8).

4. A swage heat treatment apparatus as claimed in claim 3, wherein: The base (2) has a clearance groove (9) located on the side of the first scraper (3) away from the first cylinder (7), and the clearance groove (9) is arranged perpendicularly to the vertical plate (5).

5. A swage heat treatment apparatus as claimed in claim 4, wherein: The vertical plate (5) forms a feed inlet (10) with the base (2) at one end.

6. A swage heat treatment apparatus as claimed in claim 5, wherein: The base (2) has a third cylinder (11) on the side near the feed inlet (10). The output end of the third cylinder (11) has a baffle (12), and the end of the baffle (12) is flush with the end of the quenching box (1).

7. A swage heat treatment apparatus as claimed in claim 6, wherein: The base (2) has a drive member (13) that abuts against the inner surface of the ring forging and is used to drive the ring forging to rotate.