Example 1:
 Such as figure 1 As shown, a sample mounting device for lead-bismuth alloy melt corrosion test, the mounting device includes a mounting post 1 for mounting the sample 4, and also includes a mounting post 1 for mounting the sample 4 on the axis of the mounting post 1 Position restraint restraint device;
 The restraint device includes a plurality of isolation rings 3, and the isolation rings 3 can be sleeved on the mounting post 1;
 The restraint device also includes a sleeve 2 that can be sleeved on the mounting post 1;
 The restraining device further includes a first restraining body arranged at the bottom end of the mounting column 1, and the side surface of the first restraining body is convex relative to the side wall of the mounting column 1.
 The characteristics of the traditional lead-bismuth corrosion test method are as follows: The ceramic crucible has a small volume and satisfies a higher surface dissolution ratio (the ratio of the exposed area of the sample 4 to the solution, such as 35ml/cm 2 Under the condition of ), the number of sample 4 installed is small: sample 4 is generally screwed to the lower end of the mounting column 1 (usually using a screw) to ensure that the nut sample 4 (set as sample 4 with a through internal threaded hole) In close cooperation with the screw, the screw thread of the screw cap sample 4 is usually greater than 3, so in order to meet the connection requirements, the length of the sample 4 is required to be larger (usually 10mm), which limits the installation of the sample 4 on the column 1. The number of installations on the Therefore, the current lead-bismuth immersion test method has low test efficiency, and it is difficult to carry out long-term immersion and staged sampling tests of multiple parallel samples 4.
 This solution provides a sample 4 restraint structure used in the lead-bismuth alloy melt corrosion test: in specific applications, the sample 4 is set as a sheet with a central hole, the isolation ring 3, the test The sample 4 and the casing 2 are sleeved on the mounting column 1, and a sample 4 is clamped between the adjacent isolation rings 3. The upper side of the uppermost isolation ring 3 has a casing that contacts the upper end of the isolation ring 3. 2;
 The upper end surface of the first constraining body is used to constrain the lowest position of the layer structure formed by the casing 2, the isolation ring 3, and the sample 4 on the axis of the mounting column 1;
 At the same time, downward pressure is applied to the uppermost casing 2 so that the layer structure is clamped and the lower end is supported on the first constraining body. For example, the device for applying pressure includes a second constraining body. Used to apply downward pressure to the upper end of the layer structure. In the specific application, the experimental object is limited to the sample 4, so the upper end of the uppermost casing 2 can be positioned above the liquid level of the lead-bismuth alloy melt, so the selection of the second restraint is relatively free, and multiple types can be selected Constraints, such as springs, pressure blocks, telescopic rods, etc.
 In this way, the above sample 4 installation device provides a new sample 4 installation form. In specific applications, compared with the existing sample 4 connection mode, the isolation ring 3 makes two adjacent samples 4 spaced apart. That is, not only the thickness of the sample 4 is not limited to the number of threads required to complete a reliable thread connection, but also the thickness of the spacer ring 3 only needs to satisfy the above interval arrangement. In this way, since the present invention can use the thin sample 4, it can effectively reduce the single sample 4 to meet the test requirements under the premise that the test sleeve is set on the mounting post 1 to ensure the reliability of the sample 4 The minimum thickness and the exposed area of sample 4 significantly increase the number of installations of sample 4 of the lead-bismuth corrosion test device, and improve the ability of the lead-bismuth corrosion test device to carry out multiple parallel sample 4 long-period immersion tests.
 In the prior art, in order to consider the reliability of the installation on the restraint sample 4, the above screw is generally made of stainless steel. During the lead-bismuth corrosion test, the lead-bismuth alloy melt has a certain corrosiveness to the mounting column 1 itself. In this solution, for the combination formed by the mounting column 1, the sample 4, the isolation ring 3, and the sleeve 2, most or all of the exposed parts of the outer wall of the combination can be the outside of the sample 4, the outside of the isolation ring 3 and On the outside of the casing 2, the installation column 1 is partially exposed in the lead-bismuth alloy melt compared with the existing connection method. The installation column 1 is wrapped by the sample 4, the isolation ring 3, and the casing 2 based on the lead-bismuth alloy melting. The poor fluidity of the body itself can also effectively reduce or avoid the wear of the installation column 1 due to corrosion during use without special sealing and isolation measures.