CN211206074U - Device for preventing pressure deviation of test plate bending test of two metal welding joints - Google Patents
Device for preventing pressure deviation of test plate bending test of two metal welding joints Download PDFInfo
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- CN211206074U CN211206074U CN201921316595.6U CN201921316595U CN211206074U CN 211206074 U CN211206074 U CN 211206074U CN 201921316595 U CN201921316595 U CN 201921316595U CN 211206074 U CN211206074 U CN 211206074U
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Abstract
The utility model relates to a device for preventing two kinds of metal welding joint test plates from being pressed partially when the two kinds of metal base metal welding joint test plates are used for carrying out transverse bending tests, which comprises a clamping plate for clamping the welding joint test plates and a circular compression roller for pressing the welding joint test plates, wherein the middle part of the clamping plate is provided with a rectangular hole for inserting the welding joint test plates, the side of the rectangular hole is provided with a round hole for penetrating a steel wire rope, the two ends of the steel wire rope and the two ends of the welding joint test plates are both fixed on the two clamping plates, the steel wire rope is fixed on the clamping plate through a jackscrew, the welding joint test plates are fixed on the clamping plate through a compression screw, a positioning bolt is sleeved on the steel wire rope, a platform with a pin hole is processed at the lower part of one end of the circular compression roller, the pin hole is matched with the positioning, the normal operation of the bending test is ensured, and the problem of test plate pressure deviation in the bending test process of the circular pressure head is solved.
Description
Technical Field
The utility model belongs to the technical field of metal material test analysis, especially, relate to a prevent that two kinds of metal base metal welded joint test panels from pressing partially device when carrying out horizontal bending test at two kinds of metal base metal welded joint test panels use, guarantee that bending test normally goes on and solve the test panel pressure problem partially of circular pressure head bending test in-process.
Background
The vessel manufacturing industry often requires welding two materials together, such as stainless steel to plain carbon steel and steel to copper. According to the relevant standards, it is necessary to perform mechanical property tests on the welded joints of two metal base metals.
The welding joint test plate bending test standard GB/T2653-. However, in the bending test mode, the phenomenon of pressure deviation of the test board can occur in the test process. Particularly, when the strength and hardness differences between the base materials at two sides of the welding seam and between the welding joint and the welding heat affected zone are obvious, the phenomenon of pressure deviation is easy to occur. In the bending test, the indenter slides to the side where the base metal strength and hardness are low, and the weld does not reach the specified bending deformation amount, resulting in failure of the test. The phenomenon of pressure deviation not only causes the waste of test plate materials and test plate manufacturing working hours, but also directly influences the normal operation of production because relevant welding performance data cannot be obtained. Therefore, an effective method needs to be found, and the problem of test plate deflection in the bending test of the circular pressure head is solved by using a common three-point bending tester.
Disclosure of Invention
The utility model aims to overcome the not enough and provide one kind and can prevent the test panel and slide to one side at the in-process that bends, remain the pressure head throughout and test panel welded joint central relative position unchangeable, guarantee bending test and normally go on, solve the test panel pressure problem partially of circular pressure head bending test in-process the utility model belongs to metal material test analysis technical field especially relates to a press partially device when preventing two kinds of metal base metal welded joint test panel bending test.
The utility model discloses a realize like this during purpose: a device for preventing two kinds of metal base material welding joint test plates from being pressed partially in a bending test comprises two parallel-placed long-strip-shaped clamping plates for clamping the welding joint test plates and a circular compression roller for pressing the welding joint test plates, wherein a rectangular hole for inserting the welding joint test plates with corresponding specifications is formed in the middle of each clamping plate, a round hole for penetrating a steel wire rope is formed beside the rectangular hole, two ends of the steel wire rope and two ends of each welding joint test plate are fixed on the two clamping plates, the steel wire rope is fixed on the clamping plates through jackscrews, the welding joint test plates are fixed on the clamping plates through compression screws, a positioning bolt is sleeved at the middle position of the steel wire rope and is reliably fastened on the steel wire rope through the jackscrews, and the axial direction of the positioning bolt is vertical to the length direction of the clamping plates; a platform with a pin hole is processed at the lower part of one end of the circular compression roller, the pin hole is matched with a positioning bolt, and after a welding joint test plate is arranged in square holes of the two clamping plates, the center of a pin shaft of the positioning bolt corresponds to the center of a welding joint of the welding joint test plate.
The steel wire rope is firstly straightened manually and then fixed on the two clamping plates by the compression screws.
The welding joint test plate is positioned above the lower supporting roller.
The positioning bolt is inserted into a pin hole at the lower part of the circular press roller, and then the center of the welding joint test plate and the circular press roller are positioned in the same vertical plane.
The length and width of the square holes of the two clamping plates are larger than the section size of the welding joint test plate, so that the welding joint test plate can be smoothly assembled and disassembled.
The diameter of the steel wire rope is the same as the thickness of the welding joint test board, and the length of the steel wire rope is larger than or equal to the length of the welding joint test board.
The steel wire rope is of a flexible structure.
The utility model discloses have following positive effect: the test plate bending device has the advantages of being safe, reliable, convenient to operate, economical, practical and cost-saving, not only being capable of avoiding waste of test plate materials and test plate manufacturing man-hour, but also being capable of obtaining relevant welding performance data and guaranteeing normal production.
Drawings
FIG. 1 is a schematic view of a bimetal welded joint test plate.
FIG. 2 is a schematic illustration of a bi-metallic weld joint panel after deflection.
Fig. 3 is a schematic structural diagram of the present invention.
Fig. 4 is a top view of fig. 3.
Fig. 5 is an over-center left side view of fig. 3.
Fig. 6 is a structural sectional view of the splint 3.
In the figure, 1, a welding joint test plate, 2, a circular compression roller, 3, a clamping plate, 4, a positioning bolt, 5, a steel wire rope, 6, a steel wire rope jackscrew, 7, a positioning bolt jackscrew, 8, a lower supporting roller (a bending testing machine with a clamp), and 9, a compression screw.
Detailed Description
As shown in fig. 1, fig. 1 is a welded joint test plate form for performing a transverse bending test. When the parent metal on the two sides is different and the performance difference is obvious, the phenomenon shown in fig. 2 appears after bending, and the bending test fails. Analysis shows that the bending deformation area of the test plate slides to the side with low strength and hardness of the base material in the bending process. If the device is used, the test plate is prevented from sliding to one side in the bending process, the relative position of the pressure head and the center of the welding joint of the test plate is always kept unchanged, the normal operation of the bending test can be ensured, and the problem of test plate deflection in the bending test process of the circular pressure head is solved.
As shown in fig. 3, 4, 5 and 6, fig. 3 is a schematic diagram of the working principle of the present invention and is also a schematic structural diagram of the present invention. The utility model discloses a device for preventing two kinds of metal base metal welded joint test panels from being pressed partially during bending test, including two parallel long-strip-shaped clamping welded joint test panels 1 clamp plate 3 and press to the welded joint test panels 1 circular compression roller 2, two clamp plate 3 are placed vertically in parallel, set up a rectangular hole for inserting the welded joint test panels 1 of corresponding specification in the middle part of clamp plate 3, set up a round hole for penetrating wire rope 5 next to the rectangular hole, namely process a rectangular hole and a round hole on clamp plate 3, the rectangular hole is used for inserting the welded joint test panels 1 of corresponding specification, the round hole is used for wire rope 5 to penetrate; two ends of a steel wire rope 5 and two ends of a welding joint test plate 1 are fixed on the two clamping plates 3, namely the steel wire rope 5 is fixed in a round hole on the clamping plates 3 through a steel wire rope jackscrew 6, and the welding joint test plate 1 is fixed in a rectangular hole on the clamping plates 3 through a compression screw 9; after the fixing, the steel wire rope 5 is parallel to the welding joint test plate 1. A positioning bolt 4 is sleeved in the middle of the steel wire rope 5 and is reliably fastened on the steel wire rope 5 through a positioning bolt jackscrew 7, and the axial direction of the positioning bolt 4 is vertical to the length direction of the clamping plate 3; a platform with a pin hole is processed at the lower part of one end of the circular compression roller 2, the pin hole is matched with the positioning bolt 4, and after the welding joint test plate 1 is arranged in the square holes of the two clamping plates 3, the center of a pin shaft of the positioning bolt 4 corresponds to the center of the welding joint test plate 1.
The diameter of the steel wire rope 5 is the same as the thickness of the welding joint test plate 1, and the length is the length of the welding joint test plate 1. Two ends of a steel wire rope 5 are respectively fixed with a clamping plate 3, the clamping plates 3 and the steel wire rope 5 are reliably fastened by a steel wire rope jackscrew 6, and the length directions of the clamping plates 3 are kept consistent after fastening. A positioning bolt 4 is sleeved in the middle of the steel wire rope 5 and is reliably fastened by a positioning bolt jackscrew 7, and the axial direction of the bolt 4 is vertical to the length direction of the clamping plate 3. The lower part of one end of the round press roller 2 is processed with a platform and a pin hole, and the pin hole is matched with the outer diameter of the positioning bolt 4.
As shown in fig. 2, the welding joint test plate 1 is placed in the square holes of the two clamping plates 3, the center of the pin shaft of the positioning pin 4 corresponds to the center of the welding joint test plate 1, the steel wire rope 5 is straightened manually, and the welding joint test plate and the two clamping plates 3 are fixed by the compression screw 9.
When the device is used, the position and various parameters of a clamp of the bending tester are adjusted, and the welding joint test plate 1 assembled with the device is placed on the lower supporting roller 8. And slowly moving the circular press roller 2 downwards to enable the positioning bolt 4 to be inserted into a pin hole at the lower part of the circular press roller 2, so that the center of the welding joint test plate 1 and the circular press roller 2 are positioned in the same vertical plane.
And (3) continuously moving the circular press roller 2 downwards, so that the welding joint test plate 1 generates bending deformation, the steel wire rope 5 generates the same bending deformation as the welding joint test plate 1, and the welding joint test plate 1 has a tendency of deviating towards the base metal on one side due to the difference of the base metals on the two sides. Because the positioning bolt 4 is inserted into the pin hole at the lower part of the circular compression roller 2, the positioning bolt 4, the steel wire rope 5, the clamping plate 3, the welding joint test plate 1 and the circular compression roller 2 have relatively fixed position relation, and therefore the steel wire rope 5 generates pulling force opposite to the deviation trend of the welding joint test plate 1.
Because the steel wire rope 5 generates a pulling force with a tendency opposite to that of the deviation of the welding joint test plate 1, the deviation of the center of the welding seam of the welding joint test plate 1 relative to the circular compression roller 2 is limited, and the normal operation of the bending deformation test of the welding joint test plate 1 is ensured.
The utility model discloses a biggest characteristics are exactly, to the characteristics of bending deformation and atress during welded joint test panel bending test, utilize simple device relatively, restriction welded joint test panel 1 and circular compression roller 2's relative position, but can guarantee welded joint test panel 1 simultaneously again and freely carry out bending deformation.
The length and width of the square hole of the clamping plate 3 are larger than the section size of the sample, so that the welding joint test plate 1 can be smoothly assembled and disassembled. In order to ensure that the welding joint test plate 1 and the steel wire rope 5 have the same bending radius and avoid mutual generation of internal stress, the diameter of the steel wire rope 5 is basically the same as the thickness of the welding joint test plate 1. The length of the steel wire rope 5 is approximately equal to that of the welded joint test plate 1, and the two clamping plates 3 are fixed at positions close to the two ends, wherein the positions are required to ensure that the clamping plates 3 do not interfere with the circular press roller 2 and the lower support roller 8 in the bending test process when the steel wire rope 5 is in a straightening state. The positioning bolt 4 is fixed on the steel wire rope 5 and positioned between the two clamping plates 3, and the bolt axis of the positioning bolt is approximately vertical to the length direction of the two clamping plates 3 so as to be conveniently inserted into the pin hole at the lower part of one end of the circular pressing roller 2 by manual assistance.
Two points need to be noticed when the welding joint test plate 1 is put into the rectangular holes of the two clamping plates 3 for pressing: 1. ensuring that the center of a welding seam of the welding joint test plate 1 corresponds to the bolt axis of the positioning bolt 4 and is in the same plane; 2. the steel wire rope is in a manual straightening state.
During bending, as in a conventional bending test, the distance between two lower support rollers 8 (provided with clamps for a bending tester) is adjusted, the circular compression roller 2 is installed on the tester, and equipment parameters are adjusted. Then the welding joint test plate 1 is arranged in the two clamping plates 3 to be fixed according to the requirements.
When the test is started, the welded joint test plate 1 fixed with the device is placed on the two lower supporting rolls 8, the circular pressing roll 2 is slowly moved downwards, the positioning bolt 4 is manually inserted into the pin hole at the lower part of one end of the circular pressing roll 2, and the length direction of the welded joint test plate 1 is perpendicular to the axial direction of the circular pressing roll 2. And then the circular compression roller 2 is moved downwards to enable the bottom of the circular compression roller 2, the welded joint test plate 1 and the upper part of the lower support roller 8 to be contacted with each other, at the moment, the positioning bolt 4 is completely inserted into a pin hole of the circular compression roller 2, but the welded joint test plate 1 is not bent and deformed.
The circular press roll 2 is further moved downwards, and the welded joint test plate 1 starts to be bent and deformed. When the welding joint test plate 1 is pressed, bent and deformed, the steel wire rope 5 is deformed as same as the welding joint test plate 1. Because the base materials on the two sides of the welded joint test plate 1 are different in strength, after the welded joint test plate is subjected to bending force, the side with lower base material strength generates bending deformation firstly, and the circular compression roller 2 tends to slide to the side. Because the positioning bolt 4 is inserted into the pin hole at the lower part of the circular compression roller 2, the positioning bolt 4, the steel wire rope 5, the clamping plate 3, the welding joint test plate 1 and the circular compression roller 2 form a relatively fixed position relation, and therefore the steel wire rope 5 generates a pulling force opposite to the deviation trend of the welding joint test plate 1. Since the steel wire rope 5 generates a pulling force opposite to the offset trend of the welding joint test plate 1, the offset of the center of the welding seam of the welding joint test plate 1 relative to the circular compression roller 2 is limited. As the center of the welding joint test plate 1 is always positioned right below the circular compression roller 2 in the bending process, the welding seam generates specified bending deformation, thereby ensuring the smooth operation of the bending test.
After the bending test is finished, the circular compression roller 2 is lifted, the positioning bolt 4 is separated from the pin hole of the circular compression roller 2, and the steel wire rope 5 is in a free state. The device and the welding joint test plate 1 are taken out from the testing machine together, the compression screw 9 is loosened, the clamping plate 3 can freely slide on the bent welding joint test plate 1, and the two clamping plates 3 are taken out from the welding joint test plate 1 respectively. And then evaluating the bending result of the welding joint test plate 1.
The steel wire rope 5 is of a flexible structure and can be repeatedly bent for use, so that the device has relatively stable use performance.
Because welding material thickness is different, the thickness of welded joint test panel 1 is different, and the bending radius of circular compression roller 2 is different, need be according to this utility model principle, preparation series device to satisfy the bending test requirement of different thickness welded joint samples.
Claims (7)
1. The utility model provides a prevent that two kinds of metal welded joint examination board press device partially during bending test, includes splint (3) of the long banding centre gripping welded joint examination board (1) of two parallel placements and press circular compression roller (2) to welded joint examination board (1), its characterized in that: the middle part of each clamping plate (3) is provided with a rectangular hole for inserting a welding joint test plate (1) with corresponding specification, a round hole for penetrating a steel wire rope (5) is formed beside the rectangular hole, the two ends of the steel wire rope (5) and the two ends of the welding joint test plate (1) are fixed on the two clamping plates (3), the steel wire rope (5) is fixed on the clamping plates (3) through a steel wire rope jackscrew (6), the welding joint test plate (1) is fixed on the clamping plates (3) through a compression screw (9), a positioning bolt (4) is sleeved at the middle position of the steel wire rope (5) and is reliably fastened on the steel wire rope (5) through a positioning bolt jackscrew (7), and the axial direction of the positioning bolt (4) is vertical to the length direction of the clamping plates (3); a platform with a pin hole is processed at the lower part of one end of the circular compression roller (2), the pin hole is matched with the positioning bolt (4), and after the welding joint test plate (1) is arranged in the square holes of the two clamping plates (3), the center of a pin shaft of the positioning bolt (4) corresponds to the center of the welding joint test plate (1).
2. The device for preventing the two-metal welded joint test plate from being biased in the bending test according to claim 1, wherein: the steel wire rope (5) is firstly straightened manually and then fixed on the two clamping plates (3) by the compression screws (9).
3. The device for preventing the two-metal welded joint test plate from being biased in the bending test according to claim 1, wherein: the welding joint test plate (1) is positioned on the lower supporting roller (8).
4. The device for preventing the two-metal welded joint test plate from being biased in the bending test according to claim 1, wherein: after the positioning bolt (4) is inserted into a pin hole at the lower part of the circular compression roller (2), the center of the welding joint test plate (1) and the circular compression roller (2) are positioned in the same vertical plane.
5. The device for preventing the two-metal welded joint test plate from being biased in the bending test according to claim 1, wherein: the length and the width of the square hole of the two clamping plates (3) are larger than the section size of the welding joint test plate (1), so that the welding joint test plate (1) can be smoothly assembled and disassembled.
6. The device for preventing the two-metal welded joint test plate from being biased in the bending test according to claim 1, wherein: the diameter of the steel wire rope (5) is the same as the thickness of the welding joint test plate (1), and the length of the steel wire rope (5) is larger than or equal to the length of the welding joint test plate (1).
7. The device for preventing the two-metal welded joint test plate from being biased in the bending test according to claim 1, wherein: the steel wire rope (5) is of a flexible structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921316595.6U CN211206074U (en) | 2019-08-14 | 2019-08-14 | Device for preventing pressure deviation of test plate bending test of two metal welding joints |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921316595.6U CN211206074U (en) | 2019-08-14 | 2019-08-14 | Device for preventing pressure deviation of test plate bending test of two metal welding joints |
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| CN211206074U true CN211206074U (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921316595.6U Active CN211206074U (en) | 2019-08-14 | 2019-08-14 | Device for preventing pressure deviation of test plate bending test of two metal welding joints |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114441278A (en) * | 2021-12-20 | 2022-05-06 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Encapsulating method and device for composite material reinforced wall plate test piece for airplane |
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2019
- 2019-08-14 CN CN201921316595.6U patent/CN211206074U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114441278A (en) * | 2021-12-20 | 2022-05-06 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Encapsulating method and device for composite material reinforced wall plate test piece for airplane |
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