CN214794225U - Hard and brittle metal material high temperature tensile test sample subassembly - Google Patents
Hard and brittle metal material high temperature tensile test sample subassembly Download PDFInfo
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- CN214794225U CN214794225U CN202023040064.4U CN202023040064U CN214794225U CN 214794225 U CN214794225 U CN 214794225U CN 202023040064 U CN202023040064 U CN 202023040064U CN 214794225 U CN214794225 U CN 214794225U
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Abstract
The utility model provides a hard brittle metal material high temperature tensile test sample subassembly, belongs to the material detection area, including the sample with the sample cooperation anchor clamps that use, sample both ends clamping part is the wedge, and parallel reduction part is the rectangle, the transition department that clamping part and parallel reduction part are connected is the circular arc, with sample matched with high temperature tensile test anchor clamps include chuck, lower chuck, go up the lantern ring, down the lantern ring, go up aligning spherical nut, down aligning spherical nut and wedge kicking block. The improved plate-shaped sample is convenient to process, pin holes do not need to be processed, and the processing difficulty is reduced; the wedge-shaped surfaces are adopted for contact, so that the stress is uniform during stretching, and the phenomena of deformation and fracture when pin holes are formed are eliminated; the wedge-shaped top block is matched with the lantern ring, so that the sample is convenient to clamp and accurate in positioning.
Description
Technical Field
The utility model relates to a material detection area, concretely relates to hard and brittle metallic material high temperature tensile test sample subassembly.
Background
When hard and brittle metal materials such as rollers, tool steel and the like need to be taken from a product body for a high-temperature tensile test, if a round bar-shaped sample is adopted, the thread processing difficulty at the clamping part at two ends is very high, so that a plate-shaped sample is generally adopted, and the tensile test is carried out according to the following formula, namely ISO 6892: 2, the thickness of the clamping part of the plate-shaped sample and the thickness of the parallel reducing part are consistent, a pin is connected to the upper clamp and the lower clamp at the processing position of the clamping part through a pin for carrying out a tensile test, the processing of the pin hole is difficult, and the phenomenon of fracture at the pin hole is easy to occur in the tensile process. Therefore, it is necessary to improve the shape of the plate-shaped sample so as to facilitate the processing, and to manufacture a corresponding high-temperature stretching clamp so as to realize the high-temperature stretching of the plate-shaped sample.
Disclosure of Invention
The utility model provides a plate-like tensile sample convenient to hard and brittle metal material high temperature tensile test solves the difficult problem of processing of conventional sample, makes corresponding high temperature tensile sample anchor clamps according to the centre gripping part characteristics of this sample simultaneously, and convenient loading and unloading fix a position the accuracy, accomplishes the high temperature tensile test of this sample.
The utility model provides a hard brittle metal material high temperature tensile test sample subassembly, includes the sample and the anchor clamps that use with the sample cooperation, sample both ends clamping part is the wedge, and parallel reduction is the rectangle, and the transition department that clamping part and parallel reduction are connected is the circular arc.
The utility model discloses technical scheme's further improvement lies in: the thickness of the clamping part and the thickness of the middle part of the sample are consistent, and the width of the parallel reducing part is 2-3 times of the thickness.
The utility model discloses technical scheme's further improvement lies in: the high-temperature tensile test fixture matched with the hard and brittle metal material plate-shaped sample comprises an upper chuck, a lower chuck, an upper lantern ring, a lower lantern ring, an upper aligning spherical nut, a lower aligning spherical nut and a wedge-shaped top block.
The utility model discloses technical scheme's further improvement lies in: the two ends corresponding to the upper chuck and the lower chuck are provided with a through wedge-shaped jaw, and the two ends corresponding to the upper chuck and the lower chuck are respectively provided with an upper lantern ring and a lower lantern ring which are matched with the chucks.
The utility model discloses technical scheme's further improvement lies in: the upper chuck, the lower chuck and the sample connecting end are positioned in the high-temperature cavity.
The utility model discloses technical scheme's further improvement lies in: the wedge-shaped jaws at the top ends of the upper chuck and the lower chuck are in clearance fit with the clamping part of the sample.
The utility model discloses technical scheme's further improvement lies in: the upper end of the upper chuck is inserted into the ball bowl support at the head of the tester, the outer part of the upper chuck is in threaded connection with the upper aligning ball nut, the lower end of the lower chuck is inserted into the ball bowl support at the bottom of the tester, and the outer part of the lower chuck is in threaded connection with the lower aligning ball nut.
The utility model discloses technical scheme's further improvement lies in: the vertical direction cross section of the wedge-shaped top block is the same as that of the clamping part of the sample, and the number of the wedge-shaped top blocks is two.
Since the technical scheme is used, the utility model discloses for the technological effect that prior art gained as follows:
the improved plate-shaped sample is convenient to process, pin holes do not need to be processed, and the processing difficulty is reduced;
and secondly, the wedge-shaped surfaces are adopted for contact, so that the stress is uniform during stretching, and the phenomena of deformation and fracture when pin holes are formed are eliminated.
And thirdly, the wedge-shaped top block is matched with the lantern ring, so that the sample is convenient to clamp and accurate in positioning.
Drawings
FIG. 1 is a front view of a plate-shaped sample for high temperature test of a hard and brittle metal material according to the present invention;
FIG. 2 is a side view of a plate-shaped sample for high temperature test of a hard and brittle metal material according to the present invention;
FIG. 3 is a high temperature tensile test fixture of the present invention;
FIG. 4 is a schematic view of the high temperature tensile test fixture of the present invention;
FIG. 5 is a sectional view taken along line A-A in FIG. 3;
FIG. 6 is a top view of the wedge-shaped top block of the present invention in use;
the device comprises a sample 1, a sample 2, an upper chuck 3, a lower chuck 4, an upper lantern ring 5, a lower lantern ring 6, an upper aligning spherical nut 7, a lower aligning spherical nut 9 and a wedge-shaped top block.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings.
The utility model provides a hard brittle metal material high temperature tensile test sample subassembly, includes sample 1 and the anchor clamps that use with sample 1 cooperation, 1 both ends clamping part of sample is the wedge, and parallel reduction is the rectangle, and the transition department that clamping part and parallel reduction are connected is the circular arc.
As shown in figure 1, the plate-shaped test sample for the high-temperature test of the hard and brittle metal material is characterized in that clamping parts at two ends of the test sample 1 are wedge-shaped, parallel reducing parts are rectangular, and the transition part where the clamping parts and the parallel reducing parts are connected is an arc.
The width of the wedge-shaped surface is the same as the width of the parallel reduction part of the sample, the wedge-shaped surface is in contact with the wedge-shaped surface of the clamp, the contact area is large, the contact stress is small in the stretching process, the contact part cannot generate plastic deformation, and the test precision is improved.
As shown in fig. 3 and 4, the high-temperature tensile test fixture matched with the high-temperature test plate-shaped sample of the hard and brittle metal material comprises an upper chuck 2, a lower chuck 3, an upper lantern ring 4, a lower lantern ring 5, an upper aligning spherical nut 6, a lower aligning spherical nut 7 and a wedge-shaped top block 9.
The two corresponding ends of the upper chuck 2 and the lower chuck 3 are provided with a through wedge-shaped jaw, the two corresponding ends of the upper chuck 2 and the lower chuck 3 are respectively provided with an upper lantern ring 4 and a lower lantern ring 5 which are matched with the chucks, and the chucks and the sample connecting ends are positioned in the high-temperature cavity.
The wedge-shaped jaws at the top ends of the upper chuck 2 and the lower chuck 3 are in clearance fit with the clamping part of the sample 1.
The upper end of the upper chuck 2 is inserted into a ball bowl support at the head of the tester, the outer part of the upper chuck 2 is in threaded connection with the upper aligning ball nut 6, the lower end of the lower chuck 3 is inserted into the ball bowl support at the bottom of the tester, and the outer part of the lower chuck 3 is in threaded connection with the lower aligning ball nut 7.
The cross section of the wedge-shaped top block 9 is the same as that of the holding portion of the test piece 1, and two pairs of wedge-shaped top blocks 9 are provided as shown in fig. 6.
During the manufacture of the chuck, the wedge-shaped jaws are processed by linear cutting and matched with the wedge-shaped surface of the improved plate-shaped sample.
After the wedge-shaped block cut off from the chuck is cut off in the middle to have the same size as the width of the sample, the remaining wedge-shaped top blocks 9 are inserted into the two ends of the wedge-shaped jaw, and the center position of the sample is coincided with the center position of the chuck.
The position of the wedge-shaped jaw is sleeved in the lantern ring, so that the wedge-shaped top block 9 is prevented from shifting or falling off, and the jaw is prevented from being deformed after being stressed.
When detecting metal high temperature tensile test, install last chuck 2 and lower chuck 3 on the testing machine, put into the wedge of last chuck 2 and lower chuck 3 and keep silent with the both ends of the metal sample of cutting out to put into wedge from the both sides of sample 1 respectively and keep silent with wedge kicking block 9, with sample central point and chuck central point coincidence, the position of wedge keeps silent embolias the lantern ring, screws up lantern ring 4 and lower lantern ring 5, can carry out tensile test.
Claims (8)
1. The utility model provides a hard brittle metal material high temperature tensile test sample subassembly which characterized in that: including sample (1) and with sample (1) cooperation anchor clamps that use, sample (1) both ends clamping part is the wedge, and parallel reduction is the rectangle, and the transition department that clamping part and parallel reduction are connected is the circular arc.
2. The hard and brittle metallic material high temperature tensile test specimen assembly according to claim 1, characterized in that: the thickness of the clamping part and the middle part of the sample (1) is consistent, and the width of the parallel reducing part is 2-3 times of the thickness.
3. The hard and brittle metallic material high temperature tensile test specimen assembly according to claim 1, characterized in that: the clamp comprises an upper clamp (2), a lower clamp (3), an upper sleeve ring (4), a lower sleeve ring (5), an upper aligning spherical nut (6), a lower aligning spherical nut (7) and a wedge-shaped jacking block (9).
4. The hard and brittle metallic material high temperature tensile test specimen assembly of claim 3, wherein: two corresponding ends of the upper chuck (2) and the lower chuck (3) are provided with a through wedge-shaped jaw, and two corresponding ends of the upper chuck (2) and the lower chuck (3) are respectively provided with an upper lantern ring (4) and a lower lantern ring (5) which are matched with the chucks.
5. The hard and brittle metallic material high temperature tensile test specimen assembly of claim 3, wherein: the connecting ends of the upper chuck (2) and the lower chuck (3) and the sample (1) are positioned in the high-temperature cavity.
6. The hard and brittle metallic material high temperature tensile test specimen assembly of claim 3, wherein: the wedge-shaped jaws at the top ends of the upper chuck (2) and the lower chuck (3) are in clearance fit with the clamping part of the sample (1).
7. The hard and brittle metallic material high temperature tensile test specimen assembly of claim 3, wherein: go up chuck (2) upper end and insert in the ball bowl support of test machine head, outside and last aligning spherical nut (6) threaded connection, chuck (3) lower extreme inserts in the ball bowl support of test machine bottom down, outside and aligning spherical nut (7) threaded connection down.
8. The hard and brittle metallic material high temperature tensile test specimen assembly of claim 3, wherein: the vertical direction cross section of the wedge-shaped top blocks (9) is the same as that of the clamping part of the sample, and the number of the wedge-shaped top blocks (9) is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023040064.4U CN214794225U (en) | 2020-12-16 | 2020-12-16 | Hard and brittle metal material high temperature tensile test sample subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023040064.4U CN214794225U (en) | 2020-12-16 | 2020-12-16 | Hard and brittle metal material high temperature tensile test sample subassembly |
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| Publication Number | Publication Date |
|---|---|
| CN214794225U true CN214794225U (en) | 2021-11-19 |
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| CN202023040064.4U Active CN214794225U (en) | 2020-12-16 | 2020-12-16 | Hard and brittle metal material high temperature tensile test sample subassembly |
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| CN (1) | CN214794225U (en) |
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