CN208043568U - A kind of bruise acquisition experimental rig - Google Patents

Abstract

The utility model is related to a kind of bruises to obtain experimental rig, the device includes mainframe (1), the 3, impact specimen (4) that drops hammer, chopping block (6), further includes being oriented to crossbeam (2) and sample support column (5).The device is dedicated for acquisition metal material impact crackle, apparatus structure is simple, and it can realize the efficiently various sizes of bruise of effect acquisition, the bruise of metal material is to carry out the research of metal material under the low temperature environment suitable for obtaining room temperature and -196 DEG C or more.

Description

An impact crack acquisition test device

technical field

The utility model relates to the field of metal material detection, in particular to an impact crack acquisition test device.

Background technique

Impact performance is one of the extremely important mechanical properties of metal materials. From the perspective of material science, the impact performance of a metal is largely determined by its own organizational state. It is of great significance to study the cracking of metal materials under impact load, and the study of the expansion of impact cracks is one of the important means. For this, the cracks of the material under impact loading must first be obtained. The metal material impact testing machine used in general scientific research or production is mainly to measure the impact toughness of the material, and can also be used to obtain the impact crack of the material, but it will affect the normal operation of the testing machine. At the same time, the efficiency of conventional impact testing machines to obtain impact cracks of metal materials is low, and the structure is relatively complex. Therefore, it is very meaningful to design a device specially used to obtain impact cracks in metal materials.

Contents of the invention

The purpose of the utility model is to provide a test device for obtaining impact cracks. The device has a simple structure and can efficiently obtain impact cracks of metal materials of different sizes.

In order to achieve the above object, the utility model provides the following technical solutions:

An impact crack acquisition test device includes a main frame 1 , a drop weight 3 , an impact sample 4 , and an anvil 6 , and the device also includes a guide beam 2 and a sample support column 5 . in:

Above the main frame 1 there is a guide beam 2 that can move up and down in a controllable manner, and the drop weight 3 is suspended below the guide beam 2 . The lower part of the main frame 1 is provided with an anvil 6, and the position of the anvil 6 corresponds to the position of the drop hammer 3; two symmetrically arranged sample support columns 5 are arranged on the top of the anvil 6, and the height of the sample support column 5 can be adjusted. Adjustment; the impact sample 4 is placed on the top of the sample support column 5.

The shape of the impact sample 4 is a cuboid sample in a three-point bending test.

Guide rails are provided on the left and right side walls of the main frame 1 , and the two ends of the guide beam 2 are respectively slidably connected to the guide rails on the left and right side walls of the main frame 1 .

The guide beam 2 is lifted and lowered by a drop weight lifting device 8 .

The cutting board 6 is installed on the base plate 7 .

The adjustable height range of the sample support column 5 is 0-40mm.

The distance between the centers of the two sample support columns 5 is 150mm.

The weight of the falling weight 3 is 1kg, 2kg, 5kg or 10kg.

The maximum falling height of the falling weight 3 is 1500mm.

The length, width and height of the impact sample 4 are 200 mm, 20 mm and 40 mm, respectively.

Compared with the prior art, the utility model has the beneficial effects of:

The impact crack acquisition test device of the utility model is specially used for acquiring impact cracks of metal materials. The device has a simple structure, and can achieve high-efficiency ground effects to obtain impact cracks of different sizes. It is suitable for obtaining impact cracks of metal materials at room temperature and low temperature above -196°C for research on metal materials. The cryogenic conditions required for the samples are obtained by a cold box or liquid nitrogen.

Description of drawings

Figure 1 is a schematic structural view of the impact crack acquisition test device of the present invention.

The reference signs therein are:

1 main frame

2 Guide beams

3 drop hammer

4 Impact specimen

5 Specimen support columns

6 chopping boards

7 Bottom plate

8 Drop hammer lifting device

Detailed ways

Below in conjunction with embodiment the utility model is further described.

As shown in Figure 1, an impact crack acquisition test device includes a main frame 1, a guide beam 2, a drop weight 3, an impact sample 4, a sample support column 5, an anvil 6, a bottom plate 7, and a drop weight lifting device 8. in:

The main frame 1 includes left and right side walls, and guide rails are arranged on the left and right side walls. The main frame 1 is arranged on the bottom 7 .

Both ends of the guide beam 2 are slidably connected to the guide rails on the left and right side walls of the main frame 1 respectively. The guide beam 2 is connected with the drop hammer lifting device 8 by a rope.

The drop hammer 3 is arranged below the guide beam 2 .

The cutting board 6 is arranged in the main frame 1 and installed on the bottom 7 . The position of the anvil 6 corresponds to the position of the drop hammer 3 . Two symmetrically arranged sample support columns 5 are arranged on the top of the cutting board 6, and the height of the sample support columns 5 is adjustable, and the adjustable height range is 0-40 mm. The impact sample 4 is placed on the top of the sample support column 5 . The shape of the impact sample 4 is a cuboid sample in a three-point bending test.

Preferably, the distance between the centers of the two sample support columns 5 is 150mm.

Preferably, the length, width and height of the main frame 1 are 600mm, 500mm and 2500mm respectively.

Preferably, the weight of the drop hammer 3 can be selected from 1kg, 2kg, 5kg, 10kg, etc.; the maximum drop height of the drop hammer 3 is 1500mm. Preferably, the length, width and height of the impact sample 4 are 200 mm, 20 mm and 40 mm, respectively.

The working process of the present utility model is:

Before the experiment, the metal material to be tested was made into an impact sample 4 in the shape of a cuboid sample for a three-point bending test.

During the experiment, first place the impact sample 4 symmetrically on the two sample support columns 5, estimate the height difference between the sample support column 5 and the anvil and the weight of the drop hammer 3 according to the required crack length, and then adjust the support column 5 in height. After the sample is prepared, start the drop weight hoist 8, and then lift the drop weight 3 to the required height by lifting the guide beam 2. When the drop weight 3 reaches the required height, the drop weight 3 falls freely and impacts the impact sample 4 on the two sample support columns 5 to carry out the experiment. Under the impact of the drop weight 3, the impact sample 4 has a crack in its middle position along its height direction with a length ranging from 0 mm to 10 mm.

After one experiment, the length of the required crack can be adjusted by adjusting the height of the sample support column 5 up and down.

Before the impact cracks of metal materials are produced, the impact energy of the material can be pre-measured through conventional impact experiments, and 1/3 of the impact energy can be taken as the impact energy obtained by the crack, so as to calculate the weight of the drop hammer and the drop weight required for the test. The drop height of the hammer.

Claims (9)

1. The utility model provides a test device is obtained to impact crack, includes main frame (1), drop hammer (3), impact specimen (4), chopping block (6), its characterized in that: the device also comprises a guide cross beam (2) and a sample support column (5); wherein,

a guide cross beam (2) which can controllably move up and down is arranged above the main frame (1), and the drop hammer (3) is suspended below the guide cross beam (2); the lower part of the main frame (1) is provided with a cutting board (6), and the position of the cutting board (6) corresponds to the position of the drop hammer (3); two symmetrically arranged sample supporting columns (5) are arranged at the top end of the chopping board (6), and the heights of the sample supporting columns (5) are adjustable; an impact sample (4) is placed at the top end of the sample support column (5);

the impact sample (4) is a cuboid sample for a three-point bending test.

2. The impact crack acquisition test device according to claim 1, characterized in that:

guide rails are arranged on the left side wall and the right side wall of the main frame (1), and two ends of the guide cross beam (2) are connected with the guide rails on the left side wall and the right side wall of the main frame (1) in a sliding mode respectively.

3. The impact crack acquisition test device according to claim 1, characterized in that:

the guide beam (2) is controlled to lift and fall by a drop hammer lifting device (8).

4. The impact crack acquisition test device according to claim 1, characterized in that:

the chopping board (6) is arranged on the bottom board (7).

5. The impact crack acquisition test device according to claim 1, characterized in that:

the adjustable height range of the sample support column (5) is 0-40 mm.

6. The impact crack acquisition test device according to claim 1, characterized in that: the distance between the centers of the two sample supporting columns (5) is 150 mm.

7. The impact crack acquisition test device according to claim 1, characterized in that: the weight of the drop hammer (3) is 1kg, 2kg, 5kg or 10 kg.

8. The impact crack acquisition test device according to claim 1, characterized in that: the maximum falling height of the falling hammer (3) is 1500 mm.

9. The impact crack acquisition test device according to claim 1, characterized in that: the length, width and height of the impact test sample (4) are respectively 200mm, 20mm and 40 mm.