Method for testing high-temperature performance of metallic tube
A technology for metal pipes and testing methods, which is applied in the preparation of test samples and the application of stable tension/pressure to test the strength of materials, etc., can solve the problem of no high-temperature performance testing methods for metal pipes, and achieve lower test costs and fewer tests. effect of times
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specific Embodiment approach 1
[0014] Specific implementation mode one: as Figure 1~5 As shown, the steps of the method for testing the high-temperature performance of metal pipes in this embodiment are as follows:
[0015] Step 1. Make the metal pipe sample: select a metal pipe with a length of L, take the central axis 0 of the metal pipe as the boundary, cut off a part of the upper half of the metal pipe symmetrically at both ends, and make the remaining part of the metal pipe the shortest The busbar length L 1 It is 0.6-0.8 times the length L of the metal pipe, and the angle α between the orthographic projection of the slope formed by the remaining part and the vertical line is 5-10°, so as to obtain the metal pipe sample;
[0016] Step 2, printing the grid: first coat a layer of photoresist on the outer surface of the upper half of the metal pipe sample, and then pass through the mask to photoresist the upper half of the outer surface of the metal pipe sample. The resist layer is selectively exposed,...
specific Embodiment approach 2
[0022] Specific implementation mode two: as Figure 1~2 As shown, the length L of the metal pipe sample selected in step 1 of this embodiment is a metal pipe with a length of 35 to 45 mm, and the length L of the shortest busbar of the remaining metal pipe is 1 0.7 times the length L of the metal pipe. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0023] Specific implementation mode three: as Figure 1~2 As shown, the angle α between the oblique line projection formed by the remaining part in step 1 of this embodiment and the median perpendicular line is 6-9°. The size of the included angle between the projection of the oblique line formed by the remaining part and the vertical line can be selected according to the diameter of the metal pipe sample, and the others are the same as in the first embodiment.
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Abstract
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