Clamping device for high-temperature tensile sample for metal sheet and use method of clamping device

[0040] Example 1

[0041] As shown in the figure, a clamping device for a high-temperature tensile test specimen of a thin metal plate. Both ends of the test specimen 6 are provided with fixing parts, and each fixing part is provided with a pin hole. The clamping device passes A pin hole is used to clamp and fix the sample 6. The clamping device includes a clamp body 1 and a clamping portion 2 connected to the clamp body 1. One end of the clamp body 1 is provided with a threaded hole 101. The threaded hole A connecting rod is installed in 101. One end of the connecting rod away from the threaded hole 101 is connected to the tensile test equipment. The other end of the clamp body 1 is provided with a clamping portion 2 integrally provided with the clamp body. An end of the clamping portion 2 away from the threaded hole 101 is provided with a groove 201 with an isosceles trapezoid in cross section, and the groove 201 extends along the end of the clamping portion 2 to one side of the c

[0058] Example 2

[0059] According to the clamping device and its method of use in Example 1, the material of the metal sheet is selected as Ti70, the thickness of the metal sheet is δ=1.5mm, the test temperature of the high-temperature furnace is 600 ℃, and the high-temperature tensile test is performed. Stress-strain curve see Figure 7 .

[0060] Example 3

[0061] According to the clamping device and its method of use in Example 1, the material of the thin metal plate is Ti31, the thickness of the thin metal plate is δ=0.7mm, the test temperature of the high-temperature furnace is 350℃, and the high-temperature tensile test is performed. Stress-strain curve see Figure 8 .

[0062] From Example 2 and Example 3, it can be seen that the clamping device and the method of use of the present invention are used for high temperature tensile test, and the wedge gasket Ⅰ3 and wedge gasket Ⅱ4 can be used to complete the high temperature of metal sheets with multiple specifications. After the tensile test, there was no obvious deformation at the fixed end of the sample, and the elastic section of the obtained stress-strain curve was linear, indicating that the clamping device and the method of use of the invention have good versatility and usability , Can be promoted.