CN101943679B - Short-pipe radial fillet weld ultrasonic flaw detection method - Google Patents
Short-pipe radial fillet weld ultrasonic flaw detection method Download PDFInfo
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- CN101943679B CN101943679B CN201010262465A CN201010262465A CN101943679B CN 101943679 B CN101943679 B CN 101943679B CN 201010262465 A CN201010262465 A CN 201010262465A CN 201010262465 A CN201010262465 A CN 201010262465A CN 101943679 B CN101943679 B CN 101943679B
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- short tube
- fillet weld
- weld
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Abstract
The invention provides a short-pipe radial fillet weld ultrasonic flaw detection method, which does not waste forge pieces, does not generate the secondary process cost, and has high whole efficiency, short production period and low cost. The invention comprises a boiler barrel and a short pipe, wherein, the short pipe is connected with the boiler barrel through welding the fillet weld. The invention is characterized in that oblique probes with different refraction angles are arranged on the excircle surface of the short pipe; ultrasonic wave ejected by the oblique probe is aligned with the fillet weld and the weld cross section of the short pipe; after moving to a certain distance, each probe of the oblique probe ensures that the ultrasonic wave thereof covers the whole fillet weld and the weld cross section of the short pipe; the movable range of each probe of the oblique probe is within the excircle surface of a radial straight pipe of the short pipe; the inner surface of the boiler barrel is provided with a straight probe; the ultrasonic wave ejected by the straight probe is aligned with the fillet weld and the weld cross section of the boiler barrel; and after moving to a certain distance, each probe of the straight probe ensures that the ultrasonic wave of the probe covers the whole fillet weld and the weld cross section of the boiler barrel.
Description
Technical field
The present invention relates to the inspection field that boiler is made, be specially a kind of radial tubes base fillet weld defect detection on ultrasonic basis of short tube.
Background technology
Radially in the UT (Ultrasonic Testing) of base fillet weld, right at the superpressure boiler drum
Φ235 * 55,
Φ135 * 35.75,
Φ205 * 52.5,
Φ300 * 65,
Φ130 * 33.25,
Φ270 * 65.1,
ΦIn the detection of 405 * 85.55 specifications, exist the forging tube wall, thickness is different, detects curved surface and changes greatly, radially straight section short (60mm-120mm) carries out UT100% to fillet weld and detects, and just must keep the displacement (P that pops one's head in
=2.5TK) just can make acoustic beam cover the whole welding line cross section, reach ultrasound wave 100% and detect.
Existing radial tubes base fillet weld short tube defect detection on ultrasonic basis is: by drawing; Increase process allowance when the forging blanking by technology, wait detect qualified after, eliminate through machine work; The requirement of final maintenance design drawing; After adopting this method, its forging waste of material is big, and the secondary processing expense is big, difficulty of processing is big; Caused whole efficiency low, the production cycle is long, cost is high.
Summary of the invention
To the problems referred to above, the invention provides a kind of radial tubes base fillet weld defect detection on ultrasonic basis of short tube, its do not waste forging and do not produce secondary processing cost, whole efficiency is high, with short production cycle, cost is low.
A kind of radial tubes base fillet weld defect detection on ultrasonic basis of short tube; Its technical scheme is such: it comprises that drum cylindrical shell, short tube, said short tube are welded to connect said drum cylindrical shell through fillet weld; It is characterized in that: the periphery of said short tube is placed with the different angle probe in refraction angle; The ultrasound wave that said angle probe penetrates is aimed at the section of weld joint of said fillet weld and said short tube; Guarantee that its ultrasound wave covers the section of weld joint of whole said fillet weld and said short tube after each probe displacement of said angle probe; The scope of the displacement of each probe of said angle probe is all in the periphery of the radially straight section pipe of said short tube; The inside surface of said drum cylindrical shell is equipped with normal probe, and the ultrasound wave that said normal probe penetrates is aimed at the section of weld joint of said fillet weld and said drum cylindrical shell, guarantees after the said normal probe displacement that its ultrasound wave covers the section of weld joint of said fillet weld and said drum cylindrical shell.
It is further characterized in that:
The differential seat angle at the refraction angle of the angle probe that said refraction angle is different should be greater than 10% with respect to the angle at a wherein maximum refraction angle;
The probe Qian Yan of the different angle probe in said refraction angle, normal probe ≦ 10 millimeters;
When angle probe can be put into the internal diameter of said short tube, at the inner headed face of said short tube angle probe is set, the ultrasound wave of said angle probe is aimed at the section of weld joint of said fillet weld and said short tube.
After adopting method of the present invention; The flaw detection of the fillet weld of short tube and drum cylindrical shell and the section of weld joint of short tube guarantees that its ultrasound wave covers the section of weld joint of whole said fillet weld and said short tube after each probe displacement through the different angle probe in refraction angle, feeds back its flaw detection information; Wherein the displacement scope of each probe is in the periphery of the radially straight section pipe of short tube; So short tube need not to increase process allowance, also need not to wait detect qualified after, eliminate through machine work; Final keep the design drawing requirement, thus this method of detection do not waste forging and do not produce secondary processing cost, whole efficiency is high, with short production cycle, cost is low.
Description of drawings
Fig. 1 is the synoptic diagram of the probe positions of method of detection of the present invention.
Embodiment
See Fig. 1, the present invention includes drum cylindrical shell 5,
Φ 235 * 55 Short tube 6,
Φ 235 * 55 Short tube 6 is welded to connect drum cylindrical shell 5 through fillet weld 7,
Φ 235 * 55The periphery of short tube 6 is placed with two angle probes 1,2 that the refraction angle is different, and the model of angle probe 1 is that the model of 2.5P9 * 9K1.5-D, angle probe 2 is 2.5P9 * 9K2-D,
The ultrasound wave alignment angle weld seam 7 that angle probe 1,2 penetrates with
Φ 235 * 55The section of weld joint 8 of short tube 6 guarantees after angle probe 1, angle probe 2 displacements that its ultrasound wave covers whole welding line cross section 8, and the scope of angle probe 1, angle probe 2 displacements all exists
Φ 235 * 55In the periphery of the radially straight section pipe of short tube; The inside surface of drum cylindrical shell 5 is equipped with normal probe 4; Its model is 2.5P14-Z, and the ultrasound wave alignment angle weld seam 7 that normal probe 4 penetrates and the section of weld joint 9 of drum cylindrical shell 5, normal probe 4 move guarantees that its ultrasound wave covers section of weld joint 9 and detects a flaw.
Φ 235 * 55The inner headed face of short tube 6 is provided with angle probe 3, and the model of angle probe 3 is 2.5P9 * 9K1.5-D, and the ultrasound wave of angle probe 3 is aimed at section of weld joint 8, and angle probe 3 has been surveyed forward position, K value with an intact angle probe 3 earlier when surveying, carry out amplitude curve, exists then
Φ 235 * 55An inner headed face inwall shop rubber paper (do not draw among the figure, belong to existing mature technology) of short tube 6, angle probe 3 is put into
Φ 235 * 55The inner headed face reconditioning of short tube 6, the angle probe 3 after the reconditioning are moved and are accomplished flaw detection.
The probe Qian Yan of angle probe 1, angle probe 2, angle probe 3, normal probe 4 ≦ 10 millimeters.
Arrow among Fig. 1 is the ultrasonic emitting direction of each probe.
Claims (2)
1. radial tubes base fillet weld short tube defect detection on ultrasonic basis; It comprises that drum cylindrical shell, short tube, said short tube are welded to connect said drum cylindrical shell through fillet weld; It is characterized in that: the periphery of said short tube is placed with the different angle probe in refraction angle; The ultrasound wave that said angle probe penetrates is aimed at the section of weld joint of said fillet weld and said short tube; Guarantee that its ultrasound wave covers the section of weld joint of whole said fillet weld and said short tube after each probe displacement of said angle probe; The scope of the displacement of each probe of said angle probe is all in the periphery of the radially straight section pipe of said short tube; The inside surface of said drum cylindrical shell is equipped with normal probe, and the ultrasound wave that said normal probe penetrates is aimed at the section of weld joint of said fillet weld and said drum cylindrical shell, guarantees after the said normal probe displacement that its ultrasound wave covers the section of weld joint of said fillet weld and said drum cylindrical shell; The differential seat angle at the refraction angle of the angle probe that said refraction angle is different should be greater than 10% with respect to the angle at a wherein maximum refraction angle; The probe Qian Yan of the different angle probe in said refraction angle, normal probe ≦ 10 millimeters.
2. a kind of radial tubes base fillet weld short tube defect detection on ultrasonic basis according to claim 1; Angle probe it is characterized in that: when can be put into the internal diameter of said short tube; Inner headed face at said short tube is provided with angle probe, and the ultrasound wave of said angle probe is aimed at the section of weld joint of said fillet weld and said short tube.
Priority Applications (1)
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CN201010262465A CN101943679B (en) | 2010-08-25 | 2010-08-25 | Short-pipe radial fillet weld ultrasonic flaw detection method |
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CN201010262465A CN101943679B (en) | 2010-08-25 | 2010-08-25 | Short-pipe radial fillet weld ultrasonic flaw detection method |
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CN101943679A CN101943679A (en) | 2011-01-12 |
CN101943679B true CN101943679B (en) | 2012-10-03 |
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CN201010262465A Expired - Fee Related CN101943679B (en) | 2010-08-25 | 2010-08-25 | Short-pipe radial fillet weld ultrasonic flaw detection method |
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Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102520067B (en) * | 2011-12-16 | 2016-09-14 | 北京工业大学 | Nozzle weld detection method based on CIVA simulation software |
CN103439408A (en) * | 2013-08-20 | 2013-12-11 | 北京巴布科克·威尔科克斯有限公司 | Ultrasonic detection method for weld joint of small-caliber pipe shelf angle |
CN108445076A (en) * | 2017-12-29 | 2018-08-24 | 渤海造船厂集团有限公司 | One kind being based on T shape fillet weld transversal crack ultrasonic detection methods |
CN110632174B (en) * | 2019-09-12 | 2022-07-12 | 上海电气上重铸锻有限公司 | Ultrasonic detection method for thin-wall variable-diameter forging |
CN111458406B (en) * | 2019-12-31 | 2021-06-29 | 南京晨光集团有限责任公司 | Ultrasonic detection method for austenitic stainless steel fillet weld |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101576535A (en) * | 2008-05-08 | 2009-11-11 | 天津诚信达金属检测技术有限公司 | Incomplete-fusion ultrasonic detection method for plug-in type pipe socket angle weld grooves |
JP2010038820A (en) * | 2008-08-07 | 2010-02-18 | Hitachi-Ge Nuclear Energy Ltd | Ultrasonic inspection device |
-
2010
- 2010-08-25 CN CN201010262465A patent/CN101943679B/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101576535A (en) * | 2008-05-08 | 2009-11-11 | 天津诚信达金属检测技术有限公司 | Incomplete-fusion ultrasonic detection method for plug-in type pipe socket angle weld grooves |
JP2010038820A (en) * | 2008-08-07 | 2010-02-18 | Hitachi-Ge Nuclear Energy Ltd | Ultrasonic inspection device |
Non-Patent Citations (1)
Title |
---|
郭伟.第四单元 超声检测的应用 模块三 焊缝的超声检测.《超声检测》.2009, * |
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