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Stainless steel square welded pipe welding seam eddy current online detection device

A detection device, stainless steel technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., to achieve the effect of ensuring consistency, ensuring reliability, and quick adjustment

Pending Publication Date: 2020-03-17
SHANGHAI INST OF TECH
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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 provide a stainless steel square welded pipe weld eddy current online detection device in order to overcome the above-mentioned defects in the prior art. From the perspective of practicality and easy operation, the problem of unstable position of the welded pipe can be completely avoided. It can meet the online flaw detection of square welded pipe welds of different geometric sizes, and the detection effect is good. Before the final square welded pipe is finished, products with the above-mentioned typical welding defects can be found and eliminated.

Method used

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  • Stainless steel square welded pipe welding seam eddy current online detection device
  • Stainless steel square welded pipe welding seam eddy current online detection device
  • Stainless steel square welded pipe welding seam eddy current online detection device

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Experimental program
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Effect test

Embodiment 1

[0030] Such as Figure 1-4 As shown, the vertical plate 3 is fixed on the base 1 by bolts, and the two sides are supported by the support plate 2. The base 1 is fixed on the end workbench of the water-inflated square pipe production line by bolts; the two sides of the beam plate 4 are locked by bolts and gaskets. Tightly in the waist groove 16 of the vertical plate, the height can be controlled by moving up and down in the waist groove 16 of the vertical plate. Similarly, the waist groove 17 of the moving fixture at both ends of the moving fixture 5 is locked in the screw hole of the second beam plate through the bolt gasket. For horizontal positioning, the linear bearing 6 is clearance-fitted with the through hole 18 of the moving fixture 5, and locked and positioned through the threaded holes on both sides; the limit shaft end 8 is fixed on the top of the long axis 7 for limit, and the long axis 7 Pass the upper spring 21 (short spring), the linear bearing 6 and the beam pla...

Embodiment 2

[0034] Such as figure 1 A stainless steel square welded pipe weld seam eddy current on-line detection device shown includes a base 1, a vertical height adjustment mechanism arranged on the base 1, a horizontal displacement adjustment mechanism arranged on the vertical height adjustment mechanism, and a vertical displacement adjustment mechanism arranged on the vertical height adjustment mechanism. The elastic up and down movement mechanism arranged on the horizontal displacement adjustment mechanism and the rolling mechanism and the eddy current point probe mechanism respectively arranged at the bottom of the elastic up and down movement mechanism are moved.

[0035] Among them, the base 1 is provided with a pair, and the vertical height adjustment mechanism includes a pair of vertical plates 3 respectively arranged on the two bases 1 and a beam plate 4 horizontally arranged between the two vertical plates 3. The upper edge of the vertical plate 3 is vertically A vertical plat...

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Abstract

The invention relates to a stainless steel square welded pipe welding seam eddy current online detection device. The stainless steel square welded pipe welding seam eddy current online detection device comprises a base, a vertical height adjusting mechanism arranged on the base, a horizontal displacement adjusting mechanism arranged on the vertical height adjusting mechanism, an elastic up-down movement mechanism movably arranged on the horizontal displacement adjusting mechanism in the vertical direction, and a rolling mechanism and an eddy current point probe mechanism which are arranged atthe bottom part of the elastic up-down movement mechanism. Compared with the prior art, eddy current online flaw detection of a stainless steel square welded pipe can be more simply and conveniently achieved without additionally starting another production line, and the stainless steel square welded pipe welding seam eddy current online detection device just needs to be installed at the tail end of a water swelling square pipe production line, saves time and labor and is flexible and reliable; and the stainless steel square welded pipe welding seam eddy current online detection device ensuresthe consistency of lift-off distances in the eddy current point type probe detection process, avoids the influence of the lift-off effect in the detection process, and finally guarantees the reliability of the detection result.

Description

technical field [0001] The invention belongs to the technical field of non-destructive flaw detection of welded seams of stainless steel square welded pipes, and relates to an eddy current on-line detection device for welded seams of stainless steel square welded pipes used in automobile exhaust recirculation systems. Background technique [0002] Welded pipe is a steel pipe made of steel plate or steel strip after being cold-formed by a mold and using different welding processes. The EGR technology used in the exhaust gas recirculation system of an automobile means that the internal combustion engine separates a part of the exhaust gas after combustion and introduces it into the intake air. The main purpose of this technology is to reduce the nitrogen oxides in the exhaust gas and increase the fuel consumption rate when sharing part of the load. During the welding process, the welded pipes used in EGR are affected by different factors such as molding dies and welding proces...

Claims

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Application Information

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IPC IPC(8): G01N27/90G01N27/9093
CPCG01N27/90G01N27/9006G01N27/9093
Inventor 侯怀书陆顶赵俊岭任慧霞陆利
Owner SHANGHAI INST OF TECH
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