Profiling tool for long rod type forgings

Abstract

The utility model discloses a profiling tool for long rod type forgings, and relates to the technical field of mechanical dies. The device comprises an in-furnace tool platform, a matched cross beam, a weight bearing block and a profiling supporting tool, the in-furnace tool platform is of a grid structure, a clamping groove is formed in the upper surface of the in-furnace tool platform and used for containing the matched cross beam, the lower surface of the matched cross beam makes contact with the clamping groove, and the upper surface of the matched cross beam makes contact with the long rod type forge piece; the upper surface of the profiling supporting tool is in contact with the lower surface of the long rod type forge piece, the shape of the upper surface of the profiling supporting tool is matched with the shape of the lower surface of the long rod type forge piece, and the weight bearing block is provided with a downward opening. The tool is used for controlling deformation of the long rod type forge piece in the cooling and heat treatment process after forging, and the tool designed based on process control is beneficial to improving the consistency and stability of the forge piece correction effect.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical mold technology, specifically relating to a long rod-type forging conformal tooling. Background Technology

[0002] The outer dimensions of a certain type of titanium alloy forging are 3710×455×315mm and 3510×281×267mm, respectively. Both are complex long rod forgings with large cross-sectional variations. The effective thickness of the cross-section ranges from 205mm to 60mm, while the width initially decreases from 204mm to 87mm and then increases to 315mm. The maximum cross-section is approximately 38,000 square millimeters, and the minimum is approximately 5,000 square millimeters. The ratio of the maximum to the minimum cross-sectional area is close to 7.6. Furthermore, the rod contains multiple H-shaped grooves (1-1), with widths ranging from 80mm to 27mm and depths from 56mm to 18mm. Due to the large thickness variations, these forgings are prone to significant deformation during die forging and heat treatment. The deformation trend during heating and holding is downward, while the deformation trend during cooling is upward.

[0003] The existing process scheme focuses on the residual heat correction of forgings, but ignores the deformation of forgings under the combined effects of thermal stress, structural stress, gravity and other factors during the heat treatment and cooling process, resulting in uncontrollable variability in the correction effect. Utility Model Content

[0004] In view of this, the purpose of this utility model is to control the deformation of long rod forgings during post-forging cooling and heat treatment. The tooling designed based on process control is beneficial to improving the consistency and stability of the forging correction effect.

[0005] According to one aspect of the present invention, a contouring fixture for long rod forgings is provided, comprising an in-furnace fixture platform 1, a matching crossbeam 2, a load-bearing block 3, and a contouring support fixture 4. The in-furnace fixture platform 1 has a grid structure, with a slot 1-1 on its upper surface for placing the matching crossbeam 2. The lower surface of the matching crossbeam 2 contacts the slot 1-1, and its upper surface contacts the long rod forging. The shape of the upper surface matches the lower surface of the long rod forging. The load-bearing block 3 has a downward opening for engaging with the long rod forging. The in-furnace fixture platform 1 and the matching crossbeam 2 are used for heating the forging in the furnace. The upper surface of the contouring support fixture 4 contacts the lower surface of the long rod forging, and its shape matches the lower surface of the long rod forging. It is used for cooling the long rod forging. The load-bearing block 3 is used for heating and / or cooling the long rod forging in the furnace.

[0006] Optionally, the tooling platform 1 inside the furnace has a hollowed-out grid structure.

[0007] Optionally, the matching crossbeam 2 is a strip-shaped structure.

[0008] Optionally, a plurality of hooks are arranged circumferentially outside the in-furnace tooling platform 1.

[0009] Optionally, the profiling support tooling 4 is of a frame structure.

[0010] Optionally, feet are provided at the bottom of the frame structure of the profiling support tooling 4.

[0011] Optionally, the materials of the in-furnace tooling platform 1 and the supporting cross beam 2 are 310 steel or 0Cr25Ni20Si steel.

[0012] The in-furnace tooling platform and the supporting cross beam of the in-furnace tooling platform included in the present utility model can be used in free combination. When producing other long rod products subsequently, only the cross beam corresponding to the contour of the product needs to be replaced. The operation is simple, the cost is low, and the effect is remarkable. The load-bearing blocks can be set with different weights and freely selected. There are no special requirements for the materials and processing. The operation is simple, the production is simple, and the cost is low. The profiling support tooling can be designed according to the contours of different forgings. There are no special requirements for the materials and processing. The operation is simple, the production is simple, and the cost is low. Brief Description of the Drawings

[0013] Figure 1 is the drawing of the in-furnace tooling platform of the present utility model;

[0014] Figure 2 is the drawing of the supporting cross beam of the in-furnace tooling platform of the present utility model;

[0015] Figure 3 is the schematic diagram of the load-bearing block of the present utility model;

[0016] Figure 4 is the drawing of the profiling support tooling of the present utility model;

[0017] Description of the Reference Numerals:

[0018] 1 - In-furnace tooling platform; 2 - Supporting cross beam; 3 - Load-bearing block; 4 - Profiling support tooling; 1-1 - Card slot. Detailed Embodiments

[0019] Hereinafter, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] According to one aspect of the embodiments of the present utility model, a profiling tooling for long rod forgings is provided, as Figure 1-4As shown, the furnace tooling platform 1 includes a matching crossbeam 2, a load-bearing block 3, and a contour support tooling 4. The furnace tooling platform 1 has a grid structure, with a slot 1-1 on its upper surface for placing the matching crossbeam 2. The lower surface of the matching crossbeam 2 contacts the slot 1-1, and the upper surface contacts the long rod-like forging. The shape of the upper surface matches the lower surface of the long rod-like forging. The load-bearing block 3 has a downward opening for engaging with the long rod-like forging. The furnace tooling platform 1, the matching crossbeam 2, and the load-bearing block 3 are used for heating the forging in the furnace. The upper surface of the contour support tooling 4 contacts the lower surface of the long rod-like forging, and the shape of the upper surface matches the lower surface of the long rod-like forging. It is used for cooling the long rod-like forging. The furnace tooling platform 1 provides a stable support platform for the forging during the heating process. Crossbeams 2, of varying thicknesses, are installed on the furnace tooling platform 1 according to the forging's contour. The combination of these two components provides stable, contour-following support for the forging, preventing sagging during heating. Weight blocks 3 of varying weights are separate components that can be freely combined and installed above the forging. They apply localized pressure to the forging, preventing deformation during heating and cooling without affecting its heat absorption. The contour-following support fixture 4 provides support for the forging during the cooling process. Its contact surface with the forging is designed according to the forging's contour, simultaneously meeting both support and heat dissipation requirements.

[0021] Furthermore, the tooling platform 1 inside the furnace has a hollow mesh structure, which facilitates heat dissipation and reduces the weight of consumables.

[0022] Furthermore, the matching crossbeam 2 has a strip-like structure, which facilitates heat dissipation and is easy to process.

[0023] Furthermore, multiple hooks are arranged around the outer periphery of the furnace tooling platform 1 for lifting and transporting the furnace tooling platform 1.

[0024] Furthermore, the contour support fixture 4 has a frame structure, which facilitates heat dissipation, reduces material weight, and makes processing easier.

[0025] Furthermore, the bottom of the frame structure of the contour support fixture 4 is equipped with feet to increase stability.

[0026] Furthermore, the furnace tooling platform 1 and the matching crossbeam 2 are made of 310 steel or 0Cr25Ni20Si steel, which have high rigidity, are heat-resistant and not easily deformed.

[0027] Example

[0028] During furnace loading, the furnace tooling platform 1 is placed on the furnace bottom plate. Then, according to the shape of the forging, matching crossbeams 2 of different specifications are placed in the slots 1-1. The forging is placed above the furnace tooling platform 1 and the matching crossbeams 2. The load-bearing blocks 3 can be placed at different positions above the forging according to their specifications. This can be used to provide stable, contour-following furnace support and local pressure for the forging, preventing excessive deformation of the forging under comprehensive stress.

[0029] The contour support fixture 4 features simple manufacturing, low cost, easy operation, and stable and controllable structure. It can be used in the post-forging cooling process and heat treatment cooling process of forgings to provide contour support for forgings, reduce deformation during the cooling stage of forgings without affecting the heat dissipation effect of forgings. When used in combination with the load block 3, it can further reduce the deformation of forgings.

[0030] Two long rod forgings were trial-produced using the tooling of this utility model. The process requirement was a warpage in the length direction of the forgings ≤5mm. During the first trial production, the tooling listed in this patent was not used, and the measured warpage in the length direction of the forgings was 16mm and 17mm. During the second trial production of the forgings, the tooling listed in this patent was used, and the warpage in the length direction was reduced to 3mm and 3.6mm. The products met the requirements for subsequent processing, and the tooling achieved the expected results.

[0031] More than 10 similar products were subsequently manufactured, all using the tooling listed in this patent. The measured warpage in the length direction of the forgings was less than 4mm, indicating that the tooling is stable and reasonably designed.

[0032] The above description is merely a specific embodiment of this utility model, providing a detailed description of the utility model. Parts not covered in detail are conventional techniques. However, the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A long rod type forging profiling tooling, characterized by, include: The furnace tooling platform (1), the matching crossbeam (2), the load-bearing block (3), and the contour support tooling (4) are provided. The furnace tooling platform (1) is a grid structure with a slot (1-1) on its upper surface. The slot (1-1) is used to place the matching crossbeam (2). The lower surface of the matching crossbeam (2) is in contact with the slot (1-1), and the upper surface is in contact with the long rod forging. The shape of the upper surface matches the lower surface of the long rod forging. The load-bearing block (3) has a downward opening for engaging with the long rod forging. The furnace tooling platform (1) and the matching crossbeam (2) are used for heating the forging in the furnace. The upper surface of the contour support tooling (4) is in contact with the lower surface of the long rod forging. The shape of the upper surface matches the lower surface of the long rod forging. It is used for cooling the long rod forging. The load-bearing block (3) is used for heating and / or cooling the long rod forging in the furnace.

2. The tooling of claim 1, wherein, The tooling platform (1) inside the furnace has a hollowed-out grid structure.

3. The tooling of claim 1, wherein, The matching crossbeam (2) is a strip-shaped structure.

4. The tooling of claim 1, wherein, Multiple hooks are arranged around the outside of the tooling platform (1) inside the furnace.

5. The tooling of claim 1 wherein, The contour support fixture (4) is a frame structure.

6. The tooling of claim 5, wherein, The bottom of the frame structure of the contour support fixture (4) is provided with support legs.

7. The tooling of claim 1 wherein, The furnace tooling platform (1) and the matching crossbeam (2) are made of 310 steel or 0Cr25Ni20Si steel.

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