CN114354379B - Testing device for high-temperature creep age forming of alloy sheet - Google Patents

Abstract

The invention relates to a testing device for high-temperature creep aging forming of alloy thin plates, which includes a base, two positioning modules and a force application module. The center of the base is a creep platform, and the alloy thin plate is arranged on the creep platform. Grooves are provided at both ends of the creep platform. The positioning module can slide in the two grooves and clamp the two ends of the alloy thin plate respectively. The force application module includes a wedge and two sliders. Each slider has One side is against the other slider, the other side is against the positioning module, and the bottom surface is attached to the upper surface of the alloy sheet. The wedge is used to be inserted between the two sliders. Compared with the existing technology, the present invention has smaller overall size, easy operation and low manufacturing cost, and can be used for testing small-sized samples to perform sheet material performance testing under the creep aging forming process.

Description

A testing device for high-temperature creep aging forming of alloy sheets

Technical field

The invention relates to the field of alloy thin plate processing, and in particular to a testing device for high-temperature creep aging forming of alloy thin plates.

Background technique

Creep aging forming technology is a forming method that utilizes the creep characteristics of metal to simultaneously perform forming and aging heat treatment. Creep aging forming technology is an effective method to achieve the forming of large skin and wall panel parts. In order to improve the precision and effect of forming, it is very important to research and test the mechanical properties of alloy thin plates during the high-temperature creep aging forming process. In the existing technology, conventional creep aging forming tooling is usually directly used for research and testing. The structure of the existing tooling is generally relatively complex and requires repeated loading and unloading during testing, making the operation difficult and inefficient.

Contents of the invention

The purpose of the present invention is to provide a testing device for high-temperature creep aging forming of alloy thin plates in order to overcome the above-mentioned defects in the prior art.

The object of the present invention can be achieved through the following technical solutions:

A testing device for high-temperature creep aging forming of alloy thin plates, including a base, two positioning modules and a force application module. The center of the base is a creep platform, and the alloy thin plates are set on the creep platform. There are grooves at both ends. The positioning module can slide in the two grooves and clamp the two ends of the alloy sheet respectively. The force application module includes a wedge and two sliders. One side of each slider is against The wedge block is inserted between the two slide blocks with the other slide block, the other side against the positioning module, and the bottom surface against the upper surface of the alloy sheet.

Further, the positioning module includes an upper positioning block, a lower positioning block and a fixed rod. The lower positioning block is located in the groove, and one end of the alloy thin plate is clamped between the upper positioning block and the lower positioning block. The fixed rod passes through the upper positioning block and the alloy thin plate in sequence and then connects to the lower positioning block.

Further, it is characterized in that the height of the top surface of the lower positioning block after it is located in the groove is flush with the creep platform.

Further, it is characterized in that a V-shaped groove is formed between the two slide blocks for contacting the wedge block.

Further, it is characterized in that the angle of the V-shaped groove is at most 20 degrees.

Further, it is characterized in that it also includes a top plate, and columns are provided around the base for connecting the top plate.

Further, it is characterized in that a first through hole is provided on the top plate for passing through the wedge.

Compared with the prior art, the present invention has the following beneficial effects:

The present invention realizes the lateral positioning and tensile creep of the alloy sheet through the modular design of the base, positioning module and force application module. All structures are relatively regular geometric parts and have certain coordination with each other, and the overall size is relatively large. It is small, easy to operate, and has low manufacturing cost. It can be used to test small-sized samples to test the performance of sheet metal under the creep aging forming process.

Description of the drawings

Figure 1 is a schematic three-dimensional structural diagram of the present invention.

Figure 2 is a schematic structural diagram of the base of the present invention.

Figure 3 is a schematic structural diagram of the positioning module of the present invention.

Figure 4 is a schematic structural diagram of the force application module of the present invention.

Figure 5 is a schematic cross-sectional structural diagram of the present invention.

Reference signs: 1. Base, 11. Creep platform, 12. Groove, 13. Column, 2. Positioning module, 21. Upper positioning block, 22. Lower positioning block, 23. Fixed rod, 3. Force application module , 31. Slider, 32. Wedge, 4. Alloy sheet, 5. Top plate, 51. First through hole, 52. Second through hole.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention and provides detailed implementation modes and specific operating procedures. However, the protection scope of the present invention is not limited to the following embodiments.

As shown in Figure 1, this embodiment provides a test device for high-temperature creep aging forming of alloy thin plates, including a base 1, two positioning modules 2 and a force application module 3. The two positioning modules 2 are installed on the base 1 On both sides of the machine, the force module 3 is installed on the base 1. The alloy sheet 4 to be tested is clamped between the force application module 3 and the base 1 , and both ends are fixed by the positioning module 2 .

As shown in Figure 2, the base 1 has a rectangular main structure. Four protruding columns 13 are designed at the four corners and threaded holes are left at the top. A top plate 5 is fixed above the base 1 through fastening bolts. A convex creep platform 11 is provided in the center of the base 1 , and the creep platform 11 is divided into two grooves 12 at both ends. The positioning module 2 is used to be slidably arranged in the groove 12. The positioning module 2 and the groove 12 are provided with a reasonable clearance to ensure that the positioning block can slide freely. The top plate 5 is provided with a first through hole 51 and a second through hole 52 for passing through the wedge of the force applying module 3 and the fixing rod of the positioning module 2 respectively.

As shown in Figure 3, the positioning module 2 includes an upper positioning block 21, a lower positioning block 22 and a fixed rod (not shown in the figure). Both the upper positioning block 21 and the lower positioning block 22 have a rectangular parallelepiped structure with rounded corners. Through holes are provided in the upper positioning block 21 and the lower positioning block 22 , and through holes are also provided at both ends of the alloy thin plate 4 . The fixing rod passes through the upper positioning block 21 and the through hole of the alloy thin plate 4 in sequence and then connects to the lower positioning block 22 to achieve fixation of both ends of the alloy thin plate 4 . The lower positioning block 22 is arranged in the groove 12, and the height of the top surface of the lower positioning block 22 after being located in the groove 12 is flush with the creep platform 11, ensuring that the entire alloy sheet 4 remains flat.

As shown in FIG. 4 , the force application module 3 includes two slide blocks 31 and wedge blocks 32 . One side of each slider 31 abuts the other slider 31 , and the other side abuts the positioning module 2 . The bottom surface of each slider 31 is in contact with the upper surface of the alloy sheet 4 , and the wedge 32 is used to be inserted between the two sliders 31 . A V-shaped groove is formed between the two slide blocks 31 for contacting the wedge 32. The angle of the V-shaped groove is generally not more than 20 degrees. The wedge 32 and the sliding block 31 are in inclined surface contact, and the inclination angle between the inclined surface of the wedge 32 and the vertical y-axis is generally 5 to 10 degrees. The wedges 32 can have multiple different sizes, and the size can be selected according to the deformation required by the experiment. Changing the size of the wedges 32 can change the deformation of the sheet material.

As shown in Figure 5, the usage process of this embodiment is as follows:

First, use the upper positioning block 21, the lower positioning block 22 and the fixing rod to fix the two ends of the alloy sheet 4, and put it into the corresponding grooves 12 on both sides of the base 1. At this time, the center of the alloy sheet 4 is located on the creep platform 11 . Then put two slide blocks 31 in the corresponding positions, in which the length of the four directional pillars of the base 1 is slightly larger than the width of the upper positioning block 21, so that the slide blocks 31 can be well positioned. After that, tighten the fastening bolts to fix the top base and base 1 until it cannot be tightened manually. Insert the wedge 32 through the first through hole 51 of the top plate 5 into the gap between the two sliders 31. Use an external press to press the bottom of the wedge 32 down toward the surface of the alloy sheet 4. When the wedge 32 moves toward During the downward movement, the slider 31 is pushed to both sides, driving the positioning module to slide to both sides, exerting a pulling force toward both ends of the alloy sheet 4 to cause it to undergo quantitative elastic deformation, and finally the entire fixture is placed in the vacuum heating furnace. Creep aging treatment is carried out with medium-temperature and pressure-insulation.

In summary, the structure of this embodiment is simple. The entire testing device uses parts with relatively regular geometric shapes and certain coordination with each other. The overall size is small, easy to operate, and the manufacturing cost is low. Small-sized samples can be directly manufactured to Carry out sheet metal performance testing under creep aging forming process.

The preferred embodiments of the present invention are described in detail above. It should be understood that those skilled in the art can make many modifications and changes based on the concept of the present invention without creative efforts. Therefore, any technical solutions that can be obtained by those skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention and on the basis of the prior art should be within the scope of protection determined by the claims.

Claims (7)

1. The utility model provides a testing arrangement for alloy sheet high temperature creep age forming, its characterized in that includes base (1), two positioning module (2) and application of force module (3), the center of base (1) is creep platform (11), and alloy sheet (4) set up on creep platform (11), are equipped with recess (12) at the both ends of creep platform (11), and positioning module (2) slidable are located two recess (12) and respectively centre gripping alloy sheet (4) both ends, application of force module (3) include voussoir (32) and two slider (31), and one side of every slider (31) is supported against another slider (31), opposite side is supported against positioning module (2) to and bottom surface laminating alloy sheet (4) upper surface, voussoir (32) are used for inserting between two slider (31).

2. The testing device for high-temperature creep age forming of an alloy sheet according to claim 1, wherein the positioning module (2) comprises an upper positioning block (21), a lower positioning block (22) and a fixing rod, the lower positioning block (22) is located in the groove (12), one end of the alloy sheet (4) is clamped between the upper positioning block (21) and the lower positioning block (22), and the fixing rod sequentially penetrates through the upper positioning block (21) and the alloy sheet (4) and then is connected with the lower positioning block (22).

3. A test device for high temperature creep age forming of alloy sheet according to claim 2, wherein the top surface height of the lower positioning block (22) after being positioned in the groove (12) is flush with the creep plateau (11).

4. A test device for high temperature creep age forming of alloy sheet according to claim 1, wherein a V-shaped groove is formed between the two sliders (31) for contacting the wedge (32).

5. The test device for high temperature creep-age forming of alloy sheet according to claim 4, wherein the angle of the V-groove is at most 20 degrees.

6. The testing device for high-temperature creep age forming of alloy sheets according to claim 1, further comprising a top plate (5), wherein the periphery of the base (1) is provided with upright posts (13) for connecting the top plate (5).

7. A testing device for high temperature creep age forming of alloy sheet according to claim 6, characterized in that the top plate (5) is provided with a first through hole (51) for passing through the wedge (32).