Reference block for ultrasonic detection of resistance welding of stainless steel plate
By designing a comparative test block for ultrasonic testing of stainless steel plates using resistance welding, and by connecting two test plates with resistance welding and setting up an unwelded area, the problem of inaccurate test results was solved, and a simple defect simulation and detection was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-03-17
AI Technical Summary
In the existing technology, there is a lack of a comparison test block made of the same material as the material being tested when performing ultrasonic testing on resistance welded stainless steel plates, which leads to inaccurate test results.
A comparative test block for ultrasonic testing of resistance welding of stainless steel plates was designed, comprising two test plates connected by resistance welding with small, large and large unwelded areas between them, which are used to simulate different types of defects.
It enables accurate simulation of resistance welding defects in stainless steel plates, simplifies the test block fabrication process, and facilitates inspection by operators.
Smart Images
Figure CN224005018U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electric welding inspection technology, and in particular to a comparative test block for ultrasonic testing of resistance welding of stainless steel plates. Background Technology
[0002] Ultrasonic testing for defects in resistance welding of stainless steel plates involves placing two ultrasonic probes on either side of the plate. One probe emits ultrasonic waves, while the other receives them. The intensity of the received ultrasonic waves is used to determine whether defects exist in the resistance welding. However, factors such as the thickness and material of the stainless steel plate can affect the test results. Therefore, a comparative test block made of the same material as the material being tested is needed for comparison. Consequently, there is an urgent need for a simple comparative test block. Utility Model Content
[0003] To facilitate the fabrication of comparative test blocks for stainless steel testing, this application provides a comparative test block for ultrasonic testing of resistance welding of stainless steel plates.
[0004] The above-mentioned technical objective of this application is achieved through the following technical solution:
[0005] The comparative test block for ultrasonic testing of stainless steel plate resistance welding includes two test plates, which are welded together on adjacent sides by resistance welding. There are multiple unwelded areas between the two test plates, which are classified as micro-defect areas, large-defect areas and large-area defect areas.
[0006] By adopting the above scheme, operators can simulate small defects, such as porosity and oil stains, through small defect areas, simulate larger defects, such as oil stains, cracks, and incomplete penetration, through larger defect areas, and simulate large-area defects, such as weld failure, through large-area defect areas; moreover, this test block has a simple structure and is easy to manufacture.
[0007] Optionally, the micro-defect area is a 2mm wide unwelded area.
[0008] By adopting the above method, a 2mm wide unwelded area can more accurately simulate minute defects such as pores and oil stains.
[0009] Optionally, the larger defect area is a 5mm wide unwelded area.
[0010] By adopting the above scheme, the 5mm wide unwelded area can more accurately simulate larger defects such as oil stains, cracks, and incomplete penetration.
[0011] Optionally, the large-area defect area is a 10mm wide unwelded area.
[0012] By adopting the above method, a 10mm wide unwelded area can more accurately simulate large-area defects such as solder detachment.
[0013] Optionally, the two test plates may have a thickened welding area that is 1 mm thicker than other welding locations.
[0014] By adopting the above scheme, local defects such as inclusions can be simulated in the thickened welding area.
[0015] Optionally, the test board has dimensions of 500×400×1mm.
[0016] In summary, this application has the following technical effects:
[0017] 1. By setting up micro-defect areas, larger defect areas, and large-area defect areas, the welding defects of resistance welding are simulated, and the test block structure is simple and easy to manufacture;
[0018] 2. By setting up unwelded areas with 2mm blocks, we can more accurately simulate small defects such as pores and oil stains;
[0019] 3. A thickened welding zone was set up to simulate local defects such as inclusions. Attached Figure Description
[0020] Figure 1 This is a cross-sectional view of the overall structure of this application.
[0021] In the diagram, 1. Test board; 2. Minor defect area; 3. Larger defect area; 4. Large area defect area; 5. Thickened welding machine area. Detailed Implementation
[0022] The present application will be further described in detail below with reference to the accompanying drawings.
[0023] This comparative test block for ultrasonic testing of stainless steel plate resistance welding consists of two test plates, which are welded together on adjacent sides using resistance welding. Multiple unwelded areas are left between the two test plates, representing areas of minor defects, major defects, and large-area defects. Operators can simulate minor defects such as porosity and oil stains using the minor defect areas, larger defects such as oil stains, cracks, and incomplete penetration using the major defect areas, and large-area defects such as weld detachment using the large-area defect areas. Furthermore, this test block has a simple structure and is easy to manufacture.
[0024] The test board measures 500×400×1mm, with a sequence of small defect areas, large defect areas, and large-area defect areas. The small defect area is a 2mm wide unsoldered zone used to simulate minor defects such as porosity and oil contamination; the large defect area is a 5mm wide unsoldered zone used to simulate larger defects such as oil contamination, cracks, and incomplete penetration; and the large-area defect area is a 10mm wide unsoldered zone used to simulate large-area defects such as solder detachment. Additionally, there is a thickened weld area between the two test boards, which is 1mm thicker than other welded areas. This thickened weld area is used to simulate localized defects such as inclusions.
[0025] The specific implementation principle of this application is as follows:
[0026] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.
Claims
1. A comparison test block for resistance butt welding ultrasonic testing of stainless steel plate, characterized in that: The two test plates are adjacent to each other by resistance welding, and multiple non-welding areas are left between the two test plates, which are respectively micro defect area, larger defect area and large area defect area; The micro defect area is a non-welding area with a width of 2mm; The larger defect area is a non-welding area with a width of 5mm; The large area defect area is a non-welding area with a width of 10mm.
2. The contrast block for resistance butt welding of stainless steel plates according to claim 1, characterized in that: The two test plates directly have thickened welding areas which are 1mm thicker than other welding positions.
3. The contrast block for resistance butt welding of stainless steel plates according to claim 1, characterized in that: The size of the test plate is 500*400*1mm.