A device for removing surface cracks of steel hot forging

Abstract

The utility model relates to steel forging processing technical field, concretely relates to a steel hot forging surface crack etching device, include: forging press, forging press is used for fixing steel and implements forging; etching piece, etching piece includes etching part, and etching part is the block structure with certain thickness, and etching part places at the surface crack of steel, and etching part is fixedly connected with hand -held part through connecting rod, and connecting rod is installed in the upper half of etching part thickness direction. The utility model discloses the combination of forging press and etching piece, realized when the crack on the surface of steel, does not need to shift steel and tempering, grinding and cutting etc.

Description

Technical Field

[0001] This utility model relates to the field of steel forging and processing technology, and specifically to a device for removing surface cracks in hot-forged steel. Background Technology

[0002] In steel forging, forging is a crucial step. However, in actual production, steel is prone to defects such as cracks during forging due to factors like uneven initial temperature and improper control of the forging pressure. If these defects are not addressed promptly, they can severely affect the quality of the forgings. This is especially true for difficult-to-deform materials such as cold-work die steel, high-temperature alloys, and ultra-high-strength steel. In the isothermal forging process, in addition to the common factors mentioned above, special reasons such as abnormal dynamic recrystallization, thermal stress concentration, and uneven metal flow can lead to surface cracks, corner cracks, and other defects, making them even more difficult to handle.

[0003] Currently, the conventional method for treating such crack defects is quite cumbersome. It typically requires tempering the cracked steel, heating it to 600-850℃ to relieve internal stress, followed by grinding and removing the cracked area using equipment such as grinding machines, milling machines, etc. Finally, the steel needs to be reheated to a suitable temperature for re-forging. This cumbersome process significantly extends the production cycle; compared to direct normal forging, treating a single crack can extend the production cycle by 30%-50%. Furthermore, multiple processing steps lead to significant material loss, with each grinding and reheating resulting in a 2%-5% loss of steel. The frequent heating and tempering processes also cause substantial energy waste, increasing production costs. In addition, for some high-end steels or special forgings with extremely high performance requirements, multiple heat treatments may affect the internal structure and properties of the steel, thereby reducing product quality.

[0004] Therefore, there is an urgent need for a new technology that can quickly and efficiently handle crack defects during steel forging. Utility Model Content

[0005] To address the technical problems of cumbersome removal processes, high material loss, serious energy waste, and impact on product quality caused by the need for tempering and grinding to remove cracks on the edges of steel during hot forging, followed by reheating and re-forging, this utility model provides a device for removing surface cracks in hot forging steel.

[0006] The technical solution of this utility model is as follows:

[0007] A device for removing surface cracks in hot-forged steel, comprising:

[0008] Forging presses are used to fix steel and perform forging.

[0009] The etching component includes an etching part, which is a block-shaped structure with a certain thickness. The etching part is placed at the surface crack of the steel. The etching part is fixedly connected to a hand-held part by a connecting rod, which is installed in the upper half of the etching part in the thickness direction.

[0010] Furthermore, the forging press includes a base and a hydraulic cylinder. The output end of the hydraulic cylinder is connected to a pressure block. A forging platform for placing steel is provided on the base. The upper surface of the forging platform is positioned opposite to the lower surface of the pressure block.

[0011] Furthermore, hooks are installed on the base of the forging press, and hanging rings are provided on the cutting parts to cooperate with the hooks. The combination of hooks and hanging rings allows for the storage of the cutting parts, preventing them from being lost due to careless placement. At the same time, it facilitates quick retrieval by operators when needed, improving the continuity of operation.

[0012] Furthermore, the etched portion of the part is a semi-cylinder with a certain thickness.

[0013] Furthermore, the thickness of the semi-cylinder is 40-50 mm, and the radius is 50-70 mm. Designing the removal section as a semi-cylinder of this size allows for precise alignment with the surface crack area during operation, reducing the impact on other areas and minimizing material loss during crack removal.

[0014] Furthermore, the connecting rod is 2-3 m long. This length allows the etching part to be placed at various locations on the steel surface where surface cracks may occur, while also ensuring that the operator maintains an appropriate distance from the forging press, facilitating operation.

[0015] Furthermore, the material of the etching part is steel, preferably the same steel as the pressing block of the forging press.

[0016] Furthermore, the handle of the engraving part is equipped with a rubber anti-slip sleeve. The rubber anti-slip sleeve can be made of materials such as high-temperature resistant silicone rubber. The surface of the rubber anti-slip sleeve is distributed with diamond-shaped anti-slip patterns, which enhances the friction when gripping.

[0017] The working principle of this utility model is as follows:

[0018] During the process of removing surface cracks in hot-forged steel, the on-site production operator holds the handheld part, aligns the etching part with the corresponding position on the surface of the steel with cracks, and then starts the forging press, pressing it down on the etching part. The pressure generated by the forging press drives the etching part to remove the cracks in the steel, achieving the purpose of quickly removing the cracked area.

[0019] The beneficial effects of this utility model are as follows:

[0020] This invention combines a forging press with a removal component to achieve targeted online removal of cracks on the surface of steel without requiring steel transfer, tempering, or grinding. The forging press provides a stable foundation and necessary pressure for crack removal. The removal component, acting directly on the crack, employs a block-like structure of a certain thickness to compress the steel during forging and instantly remove the crack. A connecting rod is installed on the upper half of the removal component's thickness direction, allowing the operator to easily adjust its position while preventing damage to the steel during forging. Attached Figure Description

[0021] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the etching component in Example 1.

[0023] Figure 2 This is a schematic diagram of the steel hot forging surface crack removal device of Example 1.

[0024] Figure 3 This is a schematic diagram showing the result of crack removal after using the steel hot forging surface crack removal device of Example 1.

[0025] Figure 4 This is a schematic diagram of the steel hot forging surface crack removal device of Example 2.

[0026] In the diagram, 1-etching part, 2-connecting rod, 3-handheld part, 4-etching part, 5-forging press, 6-steel, 7-base, 8-hydraulic cylinder, 9-pressing block, 10-forging table, 11-hook, 12-hanging ring, 13-rubber anti-slip sleeve. Detailed Implementation

[0027] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0028] Example 1

[0029] like Figures 1-3 As shown, a device for removing surface cracks in hot-forged steel is disclosed. This device mainly consists of two parts: a forging press 5 and a removal component 4. The forging press 5 can be a commercially available forging press or other device capable of securely fixing the steel 6 and performing hot forging according to preset parameters and operating requirements. When no cracks appear on the surface of the steel 6, the forging press 5 operates normally. Once cracks appear on the surface of the steel 6, the forging press 5 is first paused, and then the removal component 4 is used to remove the cracks from the steel 6 fixed to the forging press 5. The removal component 4 is made of steel and includes a removal section 1, which is used to directly treat the cracks. The upper half of the removal section 1 in the thickness direction is welded to one end of a connecting rod 2, and the other end of the connecting rod 2 is provided with a handheld part 3.

[0030] When cracks appear on the surface of steel 6 (generally on its edges) during forging, the forging press stops working. The removal part 1 is placed at the crack on the surface of steel 6, and then the forging press 5 is restarted. The forging press 5 applies forging pressure to the removal part 1, which removes the area surrounding the crack on the edge of steel 6. Afterward, the removal part 4 is removed, and the forging press 5 continues to forge steel 6. If cracks reappear on the edge of steel 6, the previous operation is repeated, using the removal part 4 to remove the cracked area, and then forging continues according to the process design until the product of the target size is obtained.

[0031] Example 2

[0032] A device for removing surface cracks in hot-forged steel, such as Figure 4 As shown, based on Embodiment 1, the forging press 5 of this device includes a base 7 and a hydraulic cylinder 8. The output end of the hydraulic cylinder 8 is connected to the pressure block 9. A forging table 10 for placing steel 6 is provided on the base 7. The upper surface of the forging table 10 is opposite to the lower surface of the pressure block 9.

[0033] A hook 11 is installed on the base 7 of the forging press 5, and a hanging ring 12 that works with the hook 11 is provided on the cut-out part 4;

[0034] The structure of the etching part 1 can be a semi-cylinder with a thickness of 40-50 mm and a radius of 50-70 mm, and the length of the connecting rod 2 is 2-3 m;

[0035] The handle of the engraving part 4 is provided with a rubber anti-slip sleeve 13. The rubber anti-slip sleeve 13 can be made of materials such as high temperature resistant silicone rubber, and diamond anti-slip textures are distributed on the surface of the rubber anti-slip sleeve 13.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for removing surface cracks of a steel material hot forged, characterized by, include: Forging press (5), forging press (5) is used to fix steel (6) and perform forging; The etching part (4) includes an etching section (1), which is a block structure with a certain thickness. The etching section (1) is placed at the surface crack of the steel (6). The etching section (1) is fixedly connected to a hand-held part (3) by a connecting rod (2). The connecting rod (2) is installed in the upper half of the etching section (1) in the thickness direction.

2. The device for removing surface cracks in hot-forged steel as described in claim 1, characterized in that, The forging press (5) includes a base (7) and a hydraulic cylinder (8) set above the base (7). The output end of the hydraulic cylinder (8) is connected to the pressure block (9). A forging table (10) for placing steel (6) is set on the base (7). The upper surface of the forging table (10) is opposite to the lower surface of the pressure block (9).

3. The steel hot forging surface crack removal device as described in claim 2, characterized in that, A hook (11) is installed on the base (7) of the forging press (5), and a hanging ring (12) is provided on the hand handle (3) of the cut-out part (4) to cooperate with the hook (11).

4. The device for removing surface cracks in hot-forged steel as described in claim 1, characterized in that, The etching part (1) of the etching part (4) is a semi-cylinder with a certain thickness.

5. The device for removing surface cracks in hot-forged steel as described in claim 4, characterized in that, The thickness of the semi-cylinder is 40-50 mm, and the radius is 50-70 mm.

6. The device for removing surface cracks in hot-forged steel as described in claim 1, characterized in that, The length of the connecting rod (2) is 2-3 m.

7. The device for removing surface cracks in hot-forged steel as described in claim 1, characterized in that, The material of the engraving part (4) is steel.

8. The device for removing surface cracks in hot-forged steel as described in claim 1, characterized in that, The handle (3) of the engraving part (4) is provided with a rubber anti-slip sleeve (13), and diamond anti-slip patterns are distributed on the surface of the rubber anti-slip sleeve (13).

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