A toughness testing device and method for steel processing

Abstract

This invention discloses a toughness testing device and method for steel processing, including a fixed base with support devices fixedly installed at both ends of the top of the fixed base. A bending track is fixedly installed on the inner side of the support devices, and clamping devices are movably installed at both ends of the bending track. By rotating the clamping handle, the clamping screw rotates, the clamping block descends, and the steel is pressed and bent, thus clamping the steel. The controllable bending makes the toughness testing of the steel more accurate and improves the safety of the test. A handwheel is pressed and rotated to record the distance the displacement gauge descends, allowing for an understanding of the deformation and pressure of the steel when it breaks, providing a more intuitive understanding of the deformation and pressure values ​​generated by the steel, facilitating steel testing. A protective box is included; when the steel breaks, it will fracture inside the protective box to prevent steel fragments from flying and injuring the operator, while also facilitating cleaning.

Description

Technical Field

[0001] This invention relates to the field of steel toughness testing technology, and more specifically, to a toughness testing device and method for steel processing. Background Technology

[0002] Steel is a material with a certain shape, size, and properties, made from steel ingots and billets through pressure processing. Steel toughness generally indicates the ability of steel to absorb energy during plastic deformation and fracture. The better the toughness of steel, the lower the possibility of brittle fracture, and vice versa. After the steel is processed and produced, it is necessary to conduct toughness testing to determine the pass rate of the steel, understand the steel, and thus determine its use.

[0003] Current methods for toughness testing of steel often involve elevating both ends of a cut piece of steel, leaving the middle suspended, and then striking the suspended portion with an object. The toughness is observed by the deformation, cracks, or fractures that occur. Simultaneously, hardness is assessed using a hardness test. However, this method lacks a clamping device, and the steel is prone to shifting during the striking process, reducing the accuracy of the test. Furthermore, when steel with poor toughness bends and breaks, it can easily injure operators, compromising the safety of the steel testing process.

[0004] Therefore, based on years of experience in design, development, and manufacturing in this related industry, the inventor has researched and improved upon existing structures and shortcomings, providing a toughness testing device and method for steel processing. The aim is to achieve better steel clamping and controllable bending, making steel toughness testing more accurate, improving testing safety, understanding the deformation of steel recovery, thus understanding the steel's resilience, and providing a more intuitive understanding of the deformation and pressure values ​​generated by the steel. This facilitates steel testing, makes it more convenient to use, saves time and manpower, improves the accuracy of steel testing, prevents steel fragments from flying and injuring operators, and facilitates cleaning, saving time and manpower, and improving the safety of steel toughness testing. Summary of the Invention

[0005] To overcome the aforementioned deficiencies of the prior art, embodiments of the present invention provide a toughness testing device and method for steel processing. The steel is clamped and simultaneously subjected to controllable bending, making the toughness testing of steel more accurate and improving testing safety. It allows for understanding the deformation of the steel after recovery, thereby understanding the steel's resilience. It provides a more intuitive understanding of the deformation and pressure values ​​generated by the steel, facilitating steel testing, making it more convenient to use, saving time and manpower, improving the accuracy of steel testing, preventing injury to operators from flying steel fragments, and facilitating cleaning. This further improves the safety of steel toughness testing and solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a toughness testing device and method for steel processing, comprising a fixed base, with support devices fixedly installed at both ends of the top of the fixed base, a bending track fixedly installed on the inner side of the support devices, the bending track being configured to controllably bend the steel within a movable groove, clamping devices movably installed at both ends of the bending track, a drive frame fixedly installed on the side of the top of the fixed base, and a pressing drive device movably installed inside the drive frame; the bending track includes a sliding track, the sliding track having a movable groove inside, the... The sliding track has sliding grooves on two sides inside; the clamping device includes a fixed block, a rotating shaft is movably mounted on one end of the fixed block, and rolling wheels are movably mounted on both ends of the rotating shaft. The other end of the fixed block has a placement groove, and a clamping screw is threaded onto one end of the fixed block. A clamping handle is fixedly mounted on the top of the clamping screw, and a clamping block is movably mounted on the bottom of the clamping screw. The clamping block is movably mounted inside the placement groove. The sliding groove limits the rolling wheels, allowing them to rotate inside the sliding groove, while the steel can move and rotate freely.

[0007] In a preferred embodiment, the rolling wheel is slidably mounted inside the sliding rail groove, the fixed block is movably mounted inside the movable groove, and there are two clamping devices, both of which are movably mounted inside the movable groove.

[0008] In a preferred embodiment, the fixed base includes a protective housing, the top of which has a fixing groove and the side of which has an interlocking groove. A material discharge chute is movably fitted inside the interlocking groove, and a fixing handle is fixedly installed on the side of the material discharge chute. The protective housing is set to protect the broken steel and prevent flying fragments from injuring the operator.

[0009] In a preferred embodiment, the two ends of the sliding track are fixedly sleeved on the inner side of the fixing groove, and the bottom of the sliding track is located inside the protective box.

[0010] In a preferred embodiment, the supporting device includes a connecting block. A limiting groove is formed at one end of the connecting block. Supporting pads are fixedly installed at both the upper and lower ends of the connecting block. A supporting rod is movably sleeved inside the connecting block. A rotating clamping plate is movably installed at one end of the supporting rod, and the rotating clamping plate is movably installed on the side of the supporting pad. A positioning plate is fixedly installed at the other end of the supporting rod. A return spring is fixedly installed on the side of the positioning plate. The other end of the return spring is fixedly installed on the side of the limiting groove. The return spring is movably sleeved at one end of the supporting rod and is movably installed inside the limiting groove. The limiting groove limits the positioning plate, allowing it to slide within the groove and preventing displacement when the return spring is compressed. The supporting pads support the rotating clamping plate, controlling the extension and retraction of the positioning plate.

[0011] In a preferred embodiment, the number of the support devices is two. The connecting blocks are fixedly installed at both ends of the top of the protective box. The sides of the connecting blocks are fixedly installed on the top of the outer sides of the sliding rails. The top of the sliding rails is flush with the top of the connecting blocks. The limiting groove is located on the side of the movable groove. The positioning plate is movably installed inside the limiting groove. The positioning plate is movably installed inside the movable groove. The positioning plate is movably installed at the bottom of the fixed block.

[0012] In a preferred embodiment, the drive frame includes a support plate with a positioning groove inside. A display is fixedly installed on the upper side of the support plate, and a fixing plate is fixedly installed on the top side of the support plate. A threaded hole is opened in the middle of the fixing plate, and a movable ruler groove is opened inside the fixing plate. The movable ruler groove is located on the side of the threaded hole. The positioning groove limits the positioning rod to prevent the pressing block from rotating with the pressing screw. The movable ruler groove limits the displacement ruler while providing a reference for the change of the scale of the displacement ruler.

[0013] In a preferred embodiment, the support plate is fixedly installed at one end of the top side of the protective box, and the threaded hole is located at the upper end of the middle of the fixing groove.

[0014] In a preferred embodiment, the pressing drive device includes a pressing rotary handwheel, a pressing screw fixedly mounted on the bottom of the pressing rotary handwheel, a pressing block movably mounted on the bottom of the pressing screw, the pressing block having beveled sides on both sides of its bottom, a positioning rod fixedly mounted on the side of the pressing block, a pressure sensor fixedly mounted on the bottom of the pressing block, a displacement gauge fixedly mounted on one end of the top of the pressing block, the positioning rod slidably mounted inside the positioning groove, the pressing screw threadedly mounted inside the threaded hole, the pressing block movably mounted on the bottom of the fixed plate, the displacement gauge slidably mounted inside the movable gauge groove, the pressure sensor electrically connected to a display, the surface of the displacement gauge being engraved with graduations, and the pressing block having beveled ends to facilitate bending of the steel and make the bending at both ends more uniform.

[0015] In a preferred embodiment, S1: The steel to be tested is placed inside the fixed block, and the clamping screw is rotated by rotating the clamping handle, the clamping block is lowered, and the steel is clamped, so that the steel is clamped by the clamping device;

[0016] S2: By pulling the rotating plate outward, the rotating plate is positioned on the side of the support pad. By rotating, the rotating plate is engaged with the side of the support pad. At this time, the return spring is compressed, causing the positioning plate to move into the interior of the limiting groove and the positioning plate to move out from the bottom of the fixed block.

[0017] S3: By rotating the handwheel, the pressing screw is rotated and lowered, causing the pressing block to descend. The pressure sensor then contacts the surface of the steel, and the position of the displacement gauge is recorded.

[0018] S4: Continue to rotate the handwheel to press down on the steel, causing the steel to bend and protrude into the interior of the protective housing. The roller rolls inside the sliding rail groove and displays the detected data on the display table, recording the generated pressure.

[0019] S5: When the critical value is reached, the steel breaks. Stop rotating and record the distance the displacement gauge drops to understand the deformation of the steel when it breaks and the pressure it bears when it breaks. When the steel breaks, reach the top and record the amount of pressure generated. Rotate the handwheel in the opposite direction to restore the steel and understand the deformation of the steel when it recovers, thus understanding the resilience of the steel.

[0020] S6: By pulling the fixed handle, the material drop chute is moved out of the protective box, the broken steel is collected and processed, and the clamping device is manually moved to both ends. By rotating the rotating plate, the reset spring is reset, and the clamping plate is engaged with the bottom of the fixed block to prevent the fixed block from sliding inside the movable groove.

[0021] The technical effects and advantages of this invention are as follows:

[0022] 1. This invention, by rotating the clamping handle, causes the clamping screw to rotate, the clamping block to descend, and the steel to bend under pressure. The fixing block can rotate freely according to the degree of bending of the steel, while the rolling wheel moves controllably inside the sliding rail groove, making the bending more controllable. The bending inside the protective box clamps the steel, and the controllable bending makes the steel toughness test more accurate and improves the safety of the test.

[0023] 2. This invention uses a pressing and rotating handwheel to bring the pressing block into contact with the steel. When the steel breaks, the rotation stops, and the distance the displacement gauge descends is recorded to understand the deformation of the steel at the time of breakage and the pressure it withstands. When the steel reaches the top after breaking, the pressure generated is recorded. The pressing and rotating handwheel is then rotated in the opposite direction to allow the steel to recover, and the deformation of the recovered steel is recorded, thus understanding the resilience of the steel. This provides a more intuitive understanding of the deformation and pressure values ​​generated by the steel, facilitating steel testing, making it more convenient to use, saving time and manpower, and improving the accuracy of steel testing.

[0024] 3. By setting up a protective box, when the steel breaks, it will crack inside the protective box. The fragments will impact the inside of the protective box and fall into the material chute, preventing the steel fragments from flying and injuring the operators. At the same time, it is easy to clean, saves time and manpower, and improves the safety of steel toughness testing. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 This is a schematic diagram of the clamping device structure of the present invention.

[0027] Figure 3 This is a schematic diagram of the bent track structure of the present invention.

[0028] Figure 4 This is a schematic diagram of the fixed base structure of the present invention.

[0029] Figure 5 This is a schematic diagram of the internal structure of the support device of the present invention.

[0030] Figure 6 This is a schematic diagram of the drive frame structure of the present invention.

[0031] Figure 7 This is a schematic diagram of the pressing drive device of the present invention.

[0032] The attached figures are labeled as follows: 1. Fixed base; 2. Support device; 3. Bending track; 4. Clamping device; 5. Drive frame; 6. Pressing drive device; 11. Protective housing; 12. Fixed groove; 13. Engaging groove; 14. Material drop chute; 15. Fixed handle; 21. Connecting block; 22. Limiting groove; 23. Support pad; 24. Rotating plate; 25. Support rod; 26. Positioning plate; 27. Return spring; 31. Sliding track; 32. 33. Sliding rail groove; 41. Fixed block; 42. Rotating shaft; 43. Rolling wheel; 44. Clamping handle; 45. Clamping screw; 46. Clamping block; 51. Support plate; 52. Positioning groove; 53. Display; 54. Fixed plate; 55. Movable ruler groove; 56. Threaded hole; 61. Press-to-rotate handwheel; 62. Press-to-rotate screw; 63. Press-to-rotate block; 64. Positioning rod; 65. Pressure sensor; 66. Displacement ruler. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] As attached Figure 1-7 The device and method for testing the toughness of steel processing are shown. The device includes a fixed base 1, with support devices 2 fixedly installed at both ends of the top of the fixed base 1. A bending track 3 is fixedly installed inside the support devices 2, allowing controllable bending of the steel within a movable groove 32. Clamping devices 4 are movably installed at both ends of the bending track 3. A drive frame 5 is fixedly installed on the side of the top of the fixed base 1, and a pressing drive device 6 is movably installed inside the drive frame 5. The bending track 3 includes a sliding track 31, with a movable groove 32 inside the sliding track 31 and sliding grooves on both sides inside the sliding track 31. The moving rail groove 33; the clamping device 4 includes a fixed block 41, a rotating shaft 42 is movably mounted on one end of the fixed block 41, and rolling wheels 43 are movably mounted on both ends of the rotating shaft 42. A placement groove is opened on the other end of the fixed block 41. A clamping screw 45 is threadedly mounted on one end of the fixed block 41. A clamping handle 44 is fixedly mounted on the top of the clamping screw 45. A clamping block 46 is movably mounted on the bottom of the clamping screw 45. The clamping block 46 is movably mounted inside the placement groove. A sliding rail groove 33 is provided to limit the rolling wheels 43, so that the rolling wheels 43 rotate inside the sliding rail groove 33. At the same time, the steel can move and rotate freely.

[0035] Among them, the rolling wheel 43 is slidably installed inside the sliding rail groove 33, the fixed block 41 is movably installed inside the movable groove 32, and there are two clamping devices 4, both of which are movably installed inside the movable groove 32.

[0036] The fixed base 1 includes a protective box 11. The top of the protective box 11 is provided with a fixing groove 12, and the side of the protective box 11 is provided with an interlocking groove 13. A material drop chute 14 is movably fitted inside the interlocking groove 13. A fixing handle 15 is fixedly installed on the side of the material drop chute 14. The protective box 11 is set to protect the broken steel and prevent flying fragments from injuring the operator.

[0037] The two ends of the sliding track 31 are fixedly sleeved on the inner side of the fixed groove 12, and the bottom of the sliding track 31 is located inside the protective box 11.

[0038] The support device 2 includes a connecting block 21. A limiting groove 22 is formed at one end of the connecting block 21. Support pads 23 are fixedly installed at both the upper and lower ends of the connecting block 21. A support rod 25 is movably sleeved inside the connecting block 21. A rotating clamping plate 24 is movably installed at one end of the support rod 25 and is movably installed on the side of the support pad 23. A positioning plate 26 is fixedly installed at the other end of the support rod 25. A return spring 27 is fixedly installed on the side of the positioning plate 26 and the other end of the return spring 27 is fixedly installed on the side of the limiting groove 22. The return spring 27 is movably sleeved at one end of the support rod 25 and is movably installed inside the limiting groove 22. The limiting groove 22 is set to limit the positioning plate 26, allowing the positioning plate 26 to slide inside the limiting groove 22, while preventing the return spring 27 from shifting when compressed. The support pads 23 support the rotating clamping plate 24 and control the extension and retraction of the positioning plate 26.

[0039] Among them, there are two support devices 2. The connecting block 21 is fixedly installed at both ends of the top of the protective box 11. The side of the connecting block 21 is fixedly installed at the top of the outer side of the sliding rail 31. The top of the sliding rail 31 is flush with the top of the connecting block 21. The limiting groove 22 is located on the side of the movable groove 32. The positioning plate 26 is movably installed inside the limiting groove 22. The positioning plate 26 is movably installed inside the movable groove 32. The positioning plate 26 is movably installed at the bottom of the fixed block 41.

[0040] The drive frame 5 includes a support plate 51, with a positioning groove 52 inside the support plate 51. A display 53 is fixedly installed on the upper side of the support plate 51, and a fixing plate 54 is fixedly installed on the top side of the support plate 51. A threaded hole 56 is opened in the middle of the fixing plate 54, and a movable ruler groove 55 is opened inside the fixing plate 54. The movable ruler groove 55 is located on the side of the threaded hole 56. The positioning groove 52 is set to limit the positioning rod 64 and prevent the pressing block 63 from rotating with the pressing screw 62. The movable ruler groove 55 limits the displacement ruler 66 and provides a reference for the scale change of the displacement ruler 66.

[0041] The support plate 51 is fixedly installed on one end of the top side of the protective box 11, and the threaded hole 56 is located at the upper end of the middle of the fixing groove 12.

[0042] The pressing drive device 6 includes a pressing rotating handwheel 61, a pressing screw 62 fixedly installed at the bottom of the pressing rotating handwheel 61, a pressing block 63 movably installed at the bottom of the pressing screw 62, the two sides of the bottom of the pressing block 63 being designed with bevels, a positioning rod 64 fixedly installed on the side of the pressing block 63, a pressure sensor 65 fixedly installed at the bottom of the pressing block 63, a displacement ruler 66 fixedly installed at one end of the top of the pressing block 63, the positioning rod 64 being slidably installed inside the positioning groove 52, the pressing screw 62 being threadedly installed inside the threaded hole 56, the pressing block 63 being movably installed at the bottom of the fixed plate 54, the displacement ruler 66 being slidably installed inside the movable ruler groove 55, the pressure sensor 65 being electrically connected to the display 53, the surface of the displacement ruler 66 being engraved with scales, and the pressing block 63 being set with bevels at both ends to facilitate the bending of the steel and make the bending at both ends more uniform.

[0043] S1: The steel to be tested is placed inside the fixed block 41. By rotating the clamping handle 44, the clamping screw 45 is rotated, the clamping block 46 is lowered, and the steel is clamped, so that the steel is clamped by the clamping device 4.

[0044] S2: By pulling the rotating plate 24 outward, the rotating plate 24 is positioned on the side of the support pad 23. By rotating, the rotating plate 24 is engaged with the side of the support pad 23. At this time, the return spring 27 is compressed, causing the positioning plate 26 to move into the interior of the limiting groove 22, and the positioning plate 26 moves out from the bottom of the fixing block 41.

[0045] S3: By rotating the pressing handwheel 61, the pressing screw 62 is rotated and lowered, causing the pressing block 63 to descend, and the pressure sensor 65 contacts the surface of the steel. At this time, the position of the displacement ruler 66 is recorded.

[0046] S4: Continue to rotate and press the handwheel 61 to make the pressure sensor 65 press down on the steel, causing the steel to bend and protrude into the interior of the protective box 11. The rolling wheel 43 rolls inside the sliding rail groove 33 and displays the detected data through the display table 53, recording the generated pressure.

[0047] S5: When the critical value is reached, the steel breaks. Stop rotating and record the distance the displacement ruler 66 drops to understand the deformation of the steel when it breaks and the pressure it bears when it breaks. When the steel breaks, reach the top and record the amount of pressure generated. Reverse the rotation and press the rotating handwheel 61 to restore the steel. Understand the deformation of the steel when it restores and thus understand the resilience of the steel.

[0048] S6: By pulling the fixed handle 15, the material drop chute 14 is moved out of the protective box 11, the broken steel is collected and processed, and the clamping device 4 is manually moved to both ends. By rotating the rotating plate 24, the reset spring 27 is reset, and the clamping plate 26 is clamped to the bottom of the fixed block 41 to prevent the fixed block 41 from sliding inside the movable groove 32.

[0049] The working principle of this invention is as follows: By rotating the clamping handle 44, the clamping screw 45 rotates, the clamping block 46 descends, and the steel is clamped. The external rotating plate 24 is pulled and rotated, and the rotating plate 24 supports the support pad 23, so that the clamping plate 26 moves into the interior of the limiting groove 22. By rotating and pressing the rotating handwheel 61, the pressing block 63 descends, and the steel is pressed and bent. The fixing block 41 can rotate freely according to the degree of bending of the steel. At the same time, the rolling wheel 43 moves controllably inside the sliding rail groove 33, making the bending more controllable and bending inside the protective box 11.

[0050] By rotating the pressing handwheel 61, the pressing block 63 contacts the steel. The movable groove 55 is recorded as being in the position of the displacement scale 66. Continuing to rotate, the pressure sensor 65 presses down on the steel, causing it to bend and protrude into the protective housing 11. The detected data is displayed on the display table 53, and the generated pressure is recorded. When the steel breaks, rotation stops, and the distance the displacement scale 66 descends is recorded to understand the deformation of the steel when it breaks, as well as the pressure it withstands. When the steel reaches the top after breaking, the amount of pressure generated is recorded. Rotating the pressing handwheel 61 in the opposite direction allows the steel to recover, and the deformation of the recovered steel is recorded, thus understanding the resilience of the steel and providing a more intuitive understanding of the deformation and pressure values ​​generated by the steel.

[0051] When the steel breaks, it will cause a rupture inside the protective box 11. The fragments will impact the inside of the protective box 11 and fall into the material discharge chute 14. The material discharge chute 14 can be pulled out for centralized cleaning to prevent the steel fragments from flying and injuring the operators.

[0052] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0053] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0054] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A toughness testing device for steel processing, comprising a fixed base (1), characterized in that, Support devices (2) are fixedly installed at both ends of the top of the fixed base (1). A bending track (3) is fixedly installed on the inner side of the support device (2). A clamping device (4) is movably installed at both ends of the bending track (3). A drive frame (5) is fixedly installed on the side of the top of the fixed base (1). A pressing drive device (6) is movably installed inside the drive frame (5). The fixed base (1) includes a protective box (11), and the protective box (11) has an interlocking groove (13) on its side. The interlocking groove (13) is movably fitted with a material drop groove (14). The support device (2) includes a connecting block (21), one end of which has a limiting groove (22), a support rod (25) is movably sleeved inside the connecting block (21), a rotating plate (24) is movably installed at one end of the support rod (25), a positioning plate (26) is fixedly installed at the other end of the support rod (25), and a return spring (27) is fixedly installed on the side of the positioning plate (26). The bending track (3) includes a sliding track (31), the sliding track (31) has a movable groove (32) inside, and two sliding rail grooves (33) are provided on the two sides inside the sliding track (31). The clamping device (4) includes a fixed block (41), a rotating shaft (42) is movably mounted on one end of the fixed block (41), and rolling wheels (43) are movably mounted on both ends of the rotating shaft (42). A placement groove is opened on the other end of the fixed block (41). A clamping screw (45) is threadedly mounted on one end of the fixed block (41). A clamping handle (44) is fixedly mounted on the top of the clamping screw (45). A clamping block (46) is movably mounted on the bottom of the clamping screw (45). The clamping block (46) is movably mounted inside the placement groove. The rolling wheels (43) are slidably mounted inside the sliding rail groove (33). The fixed block (41) is movably mounted inside the movable groove (32). There are two clamping devices (4), and both clamping devices (4) are movably mounted inside the movable groove (32). The number of the support devices (2) is two. The connecting block (21) is fixedly installed at both ends of the top of the protective box (11). The side of the connecting block (21) is fixedly installed at the top of the outer side of both ends of the sliding rail (31). The top of the sliding rail (31) is flush with the top of the connecting block (21). The limiting groove (22) is located on the side of the movable groove (32). The positioning plate (26) is movably installed inside the limiting groove (22). The positioning plate (26) is movably installed inside the movable groove (32). The positioning plate (26) is movably installed at the bottom of the fixed block (41).

2. The toughness testing device for steel processing according to claim 1, characterized in that: The top of the protective box (11) is provided with a fixing groove (12), and the side of the material drop chute (14) is fixedly installed with a fixing handle (15).

3. The toughness testing device for steel processing according to claim 1, characterized in that: The two ends of the sliding track (31) are fixedly sleeved on the inside of the fixed groove (12), and the bottom of the sliding track (31) is located inside the protective box (11).

4. The toughness testing device for steel processing according to claim 1, characterized in that: Support pads (23) are fixedly installed at both the upper and lower ends of the outer side of the connecting block (21). The rotating plate (24) is movably installed on the side of the support pad (23). The other end of the reset spring (27) is fixedly installed on the side of the limiting groove (22). The reset spring (27) is movably sleeved on one end of the support rod (25). The reset spring (27) is movably installed inside the limiting groove (22).

5. The toughness testing device for steel processing according to claim 1, characterized in that: The drive frame (5) includes a support plate (51), the inside of which is provided with a positioning groove (52), a display (53) is fixedly installed on the upper side of the support plate (51), a fixing plate (54) is fixedly installed on the top side of the support plate (51), a threaded hole (56) is provided in the middle of the fixing plate (54), and a movable ruler groove (55) is provided in the inside of the fixing plate (54), the movable ruler groove (55) being located on the side of the threaded hole (56).

6. The toughness testing device for steel processing according to claim 5, characterized in that: The support plate (51) is fixedly installed on one end of the top side of the protective box (11), and the threaded hole (56) is located at the upper end of the middle of the fixing groove (12).

7. The toughness testing device for steel processing according to claim 5, characterized in that: The pressing drive device (6) includes a pressing rotating handwheel (61), a pressing screw (62) is fixedly installed at the bottom of the pressing rotating handwheel (61), a pressing block (63) is movably installed at the bottom of the pressing screw (62), the two sides of the bottom of the pressing block (63) are designed with bevels, a positioning rod (64) is fixedly installed on the side of the pressing block (63), a pressure sensor (65) is fixedly installed at the bottom of the pressing block (63), a displacement ruler (66) is fixedly installed at one end of the top of the pressing block (63), the displacement ruler (66) is slidably installed inside the movable ruler groove (55), the surface of the displacement ruler (66) is engraved with scales, the pressure sensor (65) is electrically connected to the display (53), the positioning rod (64) is slidably installed inside the positioning groove (52), the pressing screw (62) is threaded inside the threaded hole (56), and the pressing block (63) is movably installed at the bottom of the fixed plate (54).

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