Manufacturing method of ultrasonic detection test piece for complex structural parts with various welding defects

A technology for welding defects and complex structures, applied in the preparation of test samples, welding equipment, manufacturing tools, etc., can solve problems such as high labor intensity and error-prone identification results

Active Publication Date: 2021-02-05
SHENYANG AEROSUN FUTAI EXPANSION JOINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the actual weldment inspection in the factory mostly adopts the method of manual inspection, relying on the years of accumulated knowledge of experienced non-destructive testing personnel to identify and identify defects. This method has problems such as high labor intensity and error-prone identification results.

Method used

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  • Manufacturing method of ultrasonic detection test piece for complex structural parts with various welding defects

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Embodiment 1

[0029] see figure 1 , the present invention provides a kind of technical scheme: comprise the following steps:

[0030] Step 1: Process one side of the groove on the welding surfaces of the two base metals to be welded respectively, and perform pretreatment;

[0031] Step 2: Aligning the unilateral grooves of the two base metals to be welded to form a complete groove;

[0032] Step 3: After the base metal to be welded forms a complete groove, argon tungsten arc welding is used for root welding;

[0033] Step 4: Then use electrode arc welding for filling welding;

[0034] Step 5: According to the preset number and position of non-fusion, use metal gas shielded welding technology to make non-fusion defects, incomplete penetration defects, porosity defects, slag inclusion defects and tungsten inclusion defects on the corresponding weld metal layer;

[0035] Step 6: Design the length and depth of the crack area and the self-deep height of the defect on the weld, and then perfor...

Embodiment 2

[0062] A method for manufacturing a steel structure test piece with welding defects, comprising the following steps:

[0063] Step 1: Welding blanking: the material is A106B steel, and the size of the test piece is Weldment 1 adopts manual processing groove, in order to prevent welding deformation, adopts symmetrical V-shaped groove, and the angle of paired groove is 45°;

[0064] Step 2: Preparation before welding: Before welding, the welding groove of the plate to be welded and the scale, rust, moisture, oil and impurities within 30 mm on both sides of the groove must be cleaned. After ensuring the cleanliness of the groove, use tungsten In polar argon arc welding, spot welding is performed at both ends of the weldment;

[0065] Step 3: Bottom welding: Tungsten argon arc welding is used for root bottom welding. The chemical composition and weight percentage of the welding wire are: C: 0.10~0.30, Si: 0.21~1.55, Mn: 2.00~3.50, Ti :0.36~0.75, N: 0.005~0.008, P≤0.008, S≤0.003...

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Abstract

The invention discloses a manufacturing method of an ultrasonic detection test piece for complex structural parts with various welding defects. The manufacturing method comprises the following steps that groove single edges on the welding surfaces of two base materials to be welded are correspondingly processed, and pretreating is carried out; the single grooves of the two base materials to be welded are aligned to form a complete groove; after the base metal to be welded forms the complete groove, argon tungsten-arc welding is adopted for bottoming; shielded metal arc welding is adopted for filling; different types of defects are manufactured on the corresponding weld metal layers through consumable electrode gas shielded welding, welding slag and the like according to the preset number and positions of cracks, slag inclusion, tungsten inclusion, air holes, incomplete groove fusion and incomplete root penetration; the remelting area of the weld joint is refined, cosmetic welding is conducted on the surface of the weld joint, and a structural test piece with various welding defects is obtained; and after the defect is manufactured, the weldment is adjusted to a flat welding position, and a layer of convex weld is welded to the upper face or the side face of the incomplete fusion defect through consumable electrode gas shielded welding for aftertreatment.

Description

technical field [0001] The invention relates to the technical field of manufacturing methods of welding defect test plates, and the specific field is a manufacturing method of ultrasonic testing test pieces of complex structural parts with various welding defects. Background technique [0002] With the development of industry, various structural steels are widely used in welded structures. At present, non-destructive testing methods in engineering include radiographic testing (RT), ultrasonic testing (UT), penetration testing (PT) and so on. When ultrasonic waves are used to detect welds welded with metal materials, there are coupling effects of different propagation characteristics such as sound velocity changes, sound beam deflection, and scattering attenuation in sound wave propagation, which makes it impossible to use conventional ultrasonic inspection methods for ultrasonic inspection of some special steel welds. When using UT to detect high-strength steel, there are m...

Claims

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Application Information

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IPC IPC(8): B23P15/00B23K28/02G01N1/28
CPCB23P15/00B23K28/02G01N1/28Y02E30/30
Inventor 李亮王涛孙丹王旭杨炳旭邵长乐周家俊庒小瑞
Owner SHENYANG AEROSUN FUTAI EXPANSION JOINT
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