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A kind of multi-purpose non-destructive testing natural defect test block and manufacturing method

A technology of non-destructive testing and natural defects, which is applied in the preparation of test samples, measuring devices, and material analysis using wave/particle radiation. It can solve the problems of complicated and expensive non-destructive testing test block production methods and achieve convenient teaching. and the effect of training

Active Publication Date: 2022-05-17
盐山双盛金属材料检测有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of the existing non-destructive testing test block manufacturing method which is complex and expensive, and a single test block often only contains a single defect, and provide a multi-purpose non-destructive testing natural defect test block and its manufacturing method

Method used

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  • A kind of multi-purpose non-destructive testing natural defect test block and manufacturing method
  • A kind of multi-purpose non-destructive testing natural defect test block and manufacturing method
  • A kind of multi-purpose non-destructive testing natural defect test block and manufacturing method

Examples

Experimental program
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Effect test

Embodiment 1

[0052] Take the butt welding of 18mm thick 45 steel plates as an example.

[0053] First, open a U-shaped groove on the test block, and repair the blunt edge by 2mm. Root welding with argon tungsten arc welding, filler welding and cover welding with electrode arc welding. Among them, the welding material for argon tungsten arc welding: the welding wire is ER55~G welding wire with a diameter of 2.5mm, the purity of argon gas is 99.99%, and the tungsten electrode is a cerium tungsten electrode with a diameter of 2.4mm. Welding material for electrode arc welding: J507 electrode with a diameter of 4mm. Main welding process parameters: Preheating before welding: preheating temperature 250°C, electrode drying at 350°C for 2 hours, argon tungsten arc welding for root welding with DC forward connection, welding current 150A, electrode arc welding with DC reverse connection, filling welding 2 passes, welding current 160A, cover welding welding current 180A, post-weld heat treatment: ...

Embodiment 2

[0066] Take the butt welding of 18mm thick 30CrMnSiA alloy steel plate as an example.

[0067] First, open a U-shaped groove on the test block, and repair the blunt edge by 2mm. Root welding with argon tungsten arc welding, filler welding and cover welding with electrode arc welding. Among them, the welding material for argon tungsten arc welding: the welding wire is ER90S~G welding wire with a diameter of 2.5mm, the purity of argon gas is 99.99%, and the tungsten electrode is a cerium tungsten electrode with a diameter of 2.4mm. Welding material for electrode arc welding: 4mm J707 electrode. Main welding process parameters: Preheating before welding: preheating temperature 250°C, electrode drying at 350°C for 2 hours, argon tungsten arc welding for root welding with DC forward connection, welding current 150A, electrode arc welding with DC reverse connection, filling welding 2 passes, welding current 160A, cover welding welding current 180A, post-weld heat treatment: heat p...

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Abstract

The invention belongs to the field of non-destructive testing, and discloses a method for making a multi-purpose non-destructive testing natural defect test block. , both the base metal and the weld can be magnetized; the groove of the base metal is filled by electrode arc welding to complete the weld filling; and in the process of filling welding, unfused defects, incomplete penetration defects, Stomatal defects, slag inclusion defects and tungsten inclusion defects; determine the design crack area on the weld, and apply ferrous sulfide powder on the design crack area, and then perform shallow penetration and remelting on the weld in the design crack area; The remelted area of ​​the weld is ground to remove unmelted ferrous sulfide; the surface of the weld is covered with face welding to obtain a multi-purpose non-destructive testing natural defect test block. The manufacturing process is simple and the cost is low, and the cracks with various defects and close to the natural form meet the needs of training and teaching.

Description

technical field [0001] The invention belongs to the field of nondestructive testing, and relates to a multipurpose nondestructive testing natural defect test block and a manufacturing method. Background technique [0002] Non-destructive testing is the use of ultrasonic, ray and other physical methods to detect the workpiece without destroying the workpiece to ensure the quality of the workpiece by discovering the defects in the workpiece. The teaching and assessment of non-destructive testing requires the use of a large number of test blocks containing natural defects to provide teaching cases and allow students to practice. Since the non-destructive testing industry mostly exists in confidential industries such as aerospace, and the lack of connection between teaching and training and non-destructive testing in other industries, the teaching and assessment of non-destructive testing lacks urgently needed test blocks containing natural defects. [0003] At present, there a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28G01N23/00G01N27/84
CPCG01N1/28G01N23/00G01N27/84
Inventor 史洪源李杰党杰惠媛媛朱耀产周鹏
Owner 盐山双盛金属材料检测有限公司
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