Insulated gate bipolar translator (IGBT) ultrasonic detection tool

An ultrasonic testing and tooling technology, used in measuring devices, material analysis using sonic/ultrasonic/infrasonic waves, instruments, etc., can solve the problems of low service life of the sealing ring, reduced accuracy, inconsistent extrusion force of the sealing ring, etc. Guaranteed elasticity and times of use, preventing excessive extrusion of the sealing ring, and consistent horizontal flatness

Inactive Publication Date: 2013-01-02
XIAN YONGDIAN ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional detection tooling mainly includes a base and a sealing window, and a sealing ring is provided between the workpiece to be tested and the sealing window. During the detection, it is necessary to vacuumize, fix the workpiece to be tested on the tooling, and fix the workpiece to be tested on the tooling. During the process, the workpiece to be tested constantly squeezes the sealing ring. Excessive extrusion for a long time will cause damage and deformation of the sealing ring, which needs to be replaced again. The service life of the sealing ring is low, which increases the cost of testing.
Moreover, when vacuuming and fixing, it is impossible to ensure that the extrusion force of the workpiece to be tested is inconsistent with each part of the sealing ring, so that the parts of the workpiece to be tested are not in the same horizontal plane, so that the horizontal flatness of the workpiece to be tested cannot meet the detection requirements, resulting in The detection error reduces the accuracy of detection, and the inaccurate detection of the workpiece to be tested will directly lead to problems when it is put into use in the later stage

Method used

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  • Insulated gate bipolar translator (IGBT) ultrasonic detection tool
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  • Insulated gate bipolar translator (IGBT) ultrasonic detection tool

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Please also see Figure 1 to Figure 4 , figure 1 It is a structural schematic diagram of the sealing mechanism of the IGBT ultrasonic testing tool disclosed in the present invention. figure 2 It is a structural schematic diagram of the IGBT ultrasonic testing tool disclosed in the present invention. image 3 It is the front view of the limit screw in the IGBT ultrasonic testing tooling disclosed by the present invention. Figure 4 It is a top view of the limit screw in the IGBT ultrasonic testing tooling disclosed by the present invention. As shown in the figure, the IGBT ultrasonic testing tooling of the present invention includes a base 1 and a sealing mechanism fixedly arranged on the base 1. The sealing mechanism includes a sealing window 2, an installation groove 3 arranged around the sealing window 2, and an installation groove located in the installation groove 3. The sealing ring 4, the outer side of the installation groove 3 is also provided with a limit me...

Embodiment 2

[0040] Such as Figure 5 As shown, the rest is the same as that of Embodiment 1, except that the limiting mechanism is three limiting rods 7 uniformly arranged outside the mounting groove 3 . By setting the limit rod, when the workpiece to be measured is evacuated and fixed, the position between the workpiece to be measured and the base is fixed, ensuring that the workpiece to be measured is effectively sealed and fixed while ensuring the service life of the sealing ring. The height setting of the rod is consistent, which can effectively ensure that the horizontal flatness of each part of the workpiece to be tested is consistent, and reduce the error during the detection of the workpiece to be measured, thereby achieving the purpose of improving the detection accuracy.

[0041] Wherein the quantity of limit rod except adopting three, also can be more than 4, 5, 6 etc. that are arranged evenly, decide according to specific needs, do not limit here.

[0042] In addition, the li...

Embodiment 3

[0044] Such as Figure 6 As shown, the rest is the same as that of Embodiment 1, the difference is that the installation groove 3 is provided with a spacer 8 that prevents the sealing ring 4 from adhering to the installation groove 3 . The contact area between the seal ring 4 and the installation groove 3 can be effectively reduced by setting the isolation part 8. When the workpiece to be measured is fixed, because the workpiece to be measured will squeeze the seal ring, the long-term extrusion effect can easily make the seal The ring 4 is bonded to the installation groove 3, so it is difficult to take it out, and it is not easy to replace the sealing ring. By setting the isolation part, the contact between the sealing ring and the installation groove is effectively reduced, which facilitates the replacement of the sealing ring later.

[0045] The isolation part 8 can be a convex point, a convex edge or a groove etc. which are evenly arranged in the installation groove 3. By a...

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PUM

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Abstract

The invention discloses an insulated gate bipolar translator (IGBT) ultrasonic detection tool. According to the detection tool, a limiting mechanism is arranged on a base; when a workpiece to be detected is vacuumized and fixed, a certain height is defined between the workpiece to be detected and the base, the extrusion strength of the workpiece to be detected on a sealing ring is in an effective range, the sealing ring is prevented from being excessively extruded, the elasticity and using frequency of the sealing ring are guaranteed, the replacement frequency of the sealing ring is reduced, and the detection cost is reduced; meanwhile, due to the arrangement of the limiting mechanism, consistent horizontal flatness of the workpiece to be detected can be effectively guaranteed; and moreover, when the horizontal flatness of the limiting mechanism is guaranteed, the horizontal flatness of the workpiece to be detected is effectively guaranteed, the error of workpiece to be detected during detection is reduced, the detection precision is improved, and the problems in the later stage during use are solved.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic testing, in particular to an IGBT ultrasonic testing tool. Background technique [0002] Ultrasonic testing (UT) is one of the methods of non-destructive testing in industry. It mainly uses ultrasonic waves to enter the object and encounter defects, a part of the sound waves will be reflected, and the transmitter and receiver can analyze the reflected waves, and the defects can be detected extremely accurately. And it can display the position and size of internal defects, measure the thickness of materials, etc. Therefore, ultrasonic testing has been widely used in the field of industrial testing due to its strong penetrating ability, high detection sensitivity, portable equipment, and safe operation. [0003] IGBT (Insulated Gate Bipolar Transistor) is a high-end power electronic device that has developed rapidly in recent years. During the packaging and manufacturing process of IGBT modules,...

Claims

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Application Information

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IPC IPC(8): G01N29/22G01N29/26
Inventor 周国卷
Owner XIAN YONGDIAN ELECTRIC
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