Bending device for intergranular corrosion test

Abstract

The utility model belongs to the technical field of chemical inspection, and particularly relates to an intergranular corrosion test bending device which comprises a testing machine main body, the testing machine main body comprises two mounting plates, grooves are formed in the mounting plates, screw rods are rotationally connected to the inner walls of the two sides of each groove, and the screw rods are arranged on the mounting plates. And the end part of one of the two lead screws on the same mounting plate extends out of the mounting plate and is welded with a knob. The bending base is placed between the two clamping plates on the lower portion, then the rotary knobs are rotated, the rotary knobs drive the corresponding lead screws to rotate, the lead screws drive the corresponding moving blocks to slide on the square rods, the moving blocks drive the corresponding clamping plates to move, and therefore the bending base is fixed through the two clamping plates on the lower portion. The pressing head is placed between the two upper clamping plates, the upper rotary knob is rotated, and the pressing head is fixed through the two upper clamping plates, so that a cold bending test of a small-specification stainless steel intergranular corrosion sample can be completed without sample adjustment, and the safety and the reliability during bending are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical testing, in particular to an intergranular corrosion test bending device. Background Art

[0002] In the intergranular corrosion resistance test of stainless steel and alloy materials, the intergranular corrosion test is an important test method. However, when conducting cold bending tests on stainless steel intergranular corrosion specimens, we are faced with the problem of mismatch between equipment and specimen size. Specifically, traditional bending devices, such as hydraulic universal testing machines, are large in size, while the size of intergranular corrosion specimens is relatively small, so more than two experienced operators are required to work together during the test. This not only increases the complexity and difficulty of the test, but also introduces human subjective factors, affecting the accuracy and reliability of the test results;

[0003] In addition, the commonly used bending methods, such as using a vise for bending, are simple and easy, but time-consuming and labor-intensive, and the accuracy is not high. Careless operation may also cause damage to the sample and even endanger the safety of the operator. Although bending with the help of an ordinary mechanical testing machine improves the degree of automation of the test, due to the mismatch of the clamp and the roller, the accuracy of the bending force and position is difficult to guarantee, which also affects the accuracy of the test results. Therefore, we proposed an intergranular corrosion test bending device to solve the above problems. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides an intergranular corrosion test bending device, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0008] A bending device for an intergranular corrosion test comprises a testing machine body, wherein the testing machine body comprises two mounting plates, wherein the mounting plates are provided with grooves, and screw rods are rotatably connected to the inner walls on both sides of the grooves, and the end of one of the two screw rods on the same mounting plate extends outside the mounting plate and is welded with a knob, and a moving block is threadedly connected to the screw rod, and two clamps are fixedly connected to one side of the moving block, a bending base is movably contacted between the two lower clamps, and a pressure head is movably contacted between the two upper clamps.

[0009] Furthermore, the clamping plate is provided with mounting grooves with openings on both sides, and the four mounting grooves are respectively in active contact with the corresponding bending bases and pressing heads.

[0010] Furthermore, an L-shaped plate is fixedly connected to the rear side of one of the two mounting plates, and an electric push rod is fixedly connected to the top inner wall of the L-shaped plate.

[0011] Furthermore, the output end of the electric push rod is fixedly connected to the top of the other mounting plate of the two mounting plates.

[0012] Furthermore, a rectangular hole is opened on the inner wall of the rear side of the L-shaped plate, a sliding block is slidably connected to the rectangular hole, and one side of the sliding block is fixedly connected to the rear side of the other mounting plate of the two mounting plates.

[0013] Furthermore, the ends of the two screw rods on the same side are fixedly connected, the threads of the two screw rods on the same side are in opposite directions, a square rod is welded between the inner walls on both sides of the groove, and the square rod is slidably connected to the corresponding moving block.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a bending device for intergranular corrosion test, which has the following beneficial effects:

[0016] The utility model places the bending press base between the two clamping plates at the bottom, and then turns the knob, which drives the corresponding screw rod to rotate, and the screw rod drives the corresponding moving block to slide on the square rod, and the moving block drives the corresponding clamping plate to move, so that the two clamping plates at the bottom fix the bending press base, and then places the pressure head between the two clamping plates at the top, and then turns the upper knob to fix it through the two clamping plates at the top, so that the cold bending test of the small-sized stainless steel intergranular corrosion sample can be completed without adjusting the sample, thereby ensuring the safety and reliability during bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the rear three-dimensional structure of the utility model;

[0019] Figure 3 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the installation plate of the utility model.

[0021] In the figure: 1. Mounting plate; 2. Groove; 3. Screw rod; 4. Knob; 5. Moving block; 6. Clamp; 7. Bending base; 8. Press head; 9. Mounting groove; 10. L-shaped plate; 11. Electric push rod; 12. Rectangular hole; 13. Slider; 14. Square rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example

[0024] like Figure 1-4 As shown, an intergranular corrosion test bending device proposed by an embodiment of the utility model includes a testing machine body, which includes two mounting plates 1, a groove 2 is provided on the mounting plate 1, and screw rods 3 are rotatably connected to the inner walls on both sides of the groove 2. The end of one of the two screw rods 3 on the same mounting plate 1 extends to the outside of the mounting plate 1 and is welded with a knob 4, a moving block 5 is threadedly connected to the screw rod 3, and one side of the moving block 5 is fixedly connected to two clamping plates 6, a bending base 7 is movably contacted between the two lower clamping plates 6, and a pressure head 8 is movably contacted between the two upper clamping plates 6, and mounting grooves 9 with openings on both sides are provided on the clamping plates 6, and the four mounting grooves 9 are respectively connected to the corresponding pressure The bending base 7 and the pressure head 8 are in active contact. The bending base 7 and the pressure head 8 are separated from the corresponding clamping plates 6 at this time. During installation, the bending base 7 is placed between the two clamping plates 6 at the bottom, and then the knob 4 is turned. The knob 4 drives the corresponding screw rod 3 to rotate, and the screw rod 3 drives the corresponding moving block 5 to slide on the square rod 14. The moving block 5 drives the corresponding clamping plate 6 to move, so that the two clamping plates 6 at the bottom fix the bending base 7. Then, the pressure head 8 is placed between the two clamping plates 6 at the top, and the upper knob 4 is turned to fix it through the two clamping plates 6 at the top. In this way, the cold bending test of small-sized stainless steel intergranular corrosion specimens can be completed without adjusting the sample, thereby ensuring safety and reliability during bending.

[0025] like Figure 2 As shown, in some embodiments, an L-shaped plate 10 is fixedly connected to the rear side of one of the two mounting plates 1, and an electric push rod 11 is fixedly connected to the top inner wall of the L-shaped plate 10. The arrangement of the electric push rod 11 and the arrangement of the L-shaped plate 10 play a supporting role.

[0026] like Figure 2 As shown, in some embodiments, the output end of the electric push rod 11 is fixedly connected to the top of the other mounting plate 1 of the two mounting plates 1, a rectangular hole 12 is opened on the inner wall of the rear side of the L-shaped plate 10, and a slider 13 is slidably connected to the rectangular hole 12, and one side of the slider 13 is fixedly connected to the rear side of the other mounting plate 1 of the two mounting plates 1. The setting of the slider 13 plays a positioning role.

[0027] like Figure 4 As shown, in some embodiments, the ends of the two screw rods 3 on the same side are fixedly connected, the threads of the two screw rods 3 on the same side are in opposite directions, a square rod 14 is welded between the inner walls on both sides of the groove 2, and the square rod 14 is slidably connected to the corresponding moving block 5. The setting of the square rod 14 plays a limiting role.

[0028] Working principle or structural principle, when in use, the bending base 7 and the pressure head 8 are separated from the corresponding clamping plates 6. During installation, the bending base 7 is placed between the two clamping plates 6 at the bottom, and then the knob 4 is turned. The knob 4 drives the corresponding screw rod 3 to rotate, and the screw rod 3 drives the corresponding moving block 5 to slide on the square rod 14, and the moving block 5 drives the corresponding clamping plate 6 to move, so that the two clamping plates 6 at the bottom fix the bending base 7, and then the pressure head 8 is placed between the two clamping plates 6 at the top, and the upper knob 4 is turned to fix it through the two clamping plates 6 at the top. After fixation, the electric push rod 11 is started, and the electric push rod 11 drives the upper clamping plate 6 to move downward through the upper mounting plate 1, and the upper two clamping plates 6 drive the pressure head 8 to move downward to perform the bending action, so that the cold bending test of small-sized stainless steel intergranular corrosion specimens can be completed without adjusting the sample, thereby ensuring safety and reliability during bending.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An intergranular corrosion test bending device, comprising a testing machine body, characterized in that: The testing machine body comprises two mounting plates (1), a groove (2) is provided on the mounting plate (1), and screw rods (3) are rotatably connected to the inner walls on both sides of the groove (2), the end of one of the two screw rods (3) on the same mounting plate (1) extends outside the mounting plate (1) and is welded with a knob (4), a moving block (5) is threadedly connected to the screw rod (3), and two clamping plates (6) are fixedly connected to one side of the moving block (5), a bending base (7) is movably contacted between the two lower clamping plates (6), and a pressure head (8) is movably contacted between the two upper clamping plates (6).

2. The intergranular corrosion test bending device according to claim 1, characterized in that: The clamping plate (6) is provided with a mounting groove (9) with openings on both sides, and the four mounting grooves (9) are respectively in active contact with the corresponding bending base (7) and the pressing head (8).

3. The intergranular corrosion test bending device according to claim 1, characterized in that: An L-shaped plate (10) is fixedly connected to the rear side of one of the two mounting plates (1), and an electric push rod (11) is fixedly connected to the top inner wall of the L-shaped plate (10).

4. The intergranular corrosion test bending device according to claim 3 is characterized in that: The output end of the electric push rod (11) is fixedly connected to the top of the other mounting plate (1) of the two mounting plates (1).

5. The intergranular corrosion test bending device according to claim 3, characterized in that: A rectangular hole (12) is provided on the inner wall of the rear side of the L-shaped plate (10), a slider (13) is slidably connected to the rectangular hole (12), and one side of the slider (13) is fixedly connected to the rear side of the other mounting plate (1) of the two mounting plates (1).

6. The intergranular corrosion test bending device according to claim 1, characterized in that: The ends of the two screw rods (3) on the same side are fixedly connected, the threads of the two screw rods (3) on the same side are in opposite directions, a square rod (14) is welded between the inner walls on both sides of the groove (2), and the square rod (14) is slidably connected to the corresponding moving block (5).

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