CN202083676U - Steel tube ultrasonic wave flaw detection comparison sample and measuring device - Google Patents
Steel tube ultrasonic wave flaw detection comparison sample and measuring device Download PDFInfo
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- CN202083676U CN202083676U CN2011201763223U CN201120176322U CN202083676U CN 202083676 U CN202083676 U CN 202083676U CN 2011201763223 U CN2011201763223 U CN 2011201763223U CN 201120176322 U CN201120176322 U CN 201120176322U CN 202083676 U CN202083676 U CN 202083676U
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Abstract
The utility model relates to a steel tube ultrasonic wave flaw detection comparison sample and a measuring device; the comparison sample is formed by splicing three sections of steel pipes, the end part of each section of the steel pipe is processed into a step respectively for splicing and welding formation conveniently; various artificial flaws are processed on each steel pipe for checking with various purposes. The ultrasonic wave flaw detection measuring device comprises a platform, two brackets arranged on the platform, the comparison sample arranged on the two brackets, a measuring mechanism arranged on the platform, wherein the measuring mechanism comprises a base arranged on the platform, a vertical rod arranged on the base, a first sliding block sheathed on the vertical rod, a cross bar of which one end is connected to the first sliding block and a dial indicator arranged at the other end of the cross bar. In the utility model, the comparison sample is utilized for providing a checking function for a steel pipe ultrasonic wave flaw detection system; furthermore, the working parameters of instruments and equipment can be checked, the comprehensive performance of the flaw detection system can be checked and flaw signals can be compared and evaluated.
Description
Technical field
The utility model relates to steel pipe nondestructive testing technique field, especially a kind of UT (Ultrasonic Testing) steel pipe control sample and measurement mechanism.
Background technology
The flaw detection of product needed such as high-pressure boiler tube, oil well pipe is to examine the quality of the production.Steel pipe manufacturing plant generally adopts defect detection on ultrasonic basis, and longitudinal defect, transverse defect on the check steel pipe, the steel pipe of high grade of steel also require to check lamination defect, detect wall thickness, detect external diameter.
The concerned countries standard that flaw detection is adopted is GB/T5777, " seamless steel pipe supersonic flaw detection method ".This standard is applicable to that the various uses weldless steel tube is vertical, the ultrasonic testing of transverse defect, and the described method of detection of standard is mainly used in check and has destroyed the successional defective of steel pipe metal, but can not check laminar type discontinuity effectively.Control sample is used for the timing verification of debugging, all-round property testing and the use of defect-detecting equipment.Artificial defect on the control sample is the foundation of evaluation natural flaw equivalent.The length of control sample should satisfy the requirement of method of detection and defect-detecting equipment.Check longitudinal defect and the used artificial defect of transverse defect should be respectively vertical notch of being parallel to tubular axis and perpendicular to the transverse notch of tubular axis, cannelure should respectively be processed one on the inside and outside surface of the middle part of sample outside surface and blind area, two ends.Transverse groove should respectively be processed one on the inside and outside surface of the middle part of sample outside surface and blind area, two ends.
Check longitudinal defect and the used artificial defect of transverse defect should be respectively vertical notch of being parallel to tubular axis and perpendicular to the transverse notch of tubular axis, its section configuration all can be rectangle or V-arrangement.Two sides of rectangular notch should be parallel to each other and perpendicular to the notch bottom surface.When adopting electro-erosion process to add man-hour, allow notch bottom surface and bight, bottom surface slightly rounded.The angle of V-shaped groove should be 60 °.
GB/T5777 stipulates that also pick-up unit should have the high precision adjusting mechanism of the relative steel pipe of probe position and can lock reliably and maybe can realize the favorable mechanical tracking, and is constant to the incident condition of pipe to guarantee dynamically to descend acoustic beam.Gearing should make steel pipe with even velocity by pick-up unit and can guarantee that steel pipe and pick-up unit have good concentricity in check.When inside and outside wall artificial defect signal used same warning gate, the warning sensitivity of defectoscope should be set than the signal of low amplitude in the signal according in the signal of inside and outside wall and circumferential diverse location.When inside and outside wall artificial defect signal used two different warning gates, the warning sensitivity of defectoscope should circumferentially set respectively than the signal of low amplitude in the diverse location according to inside and outside wall artificial defect.Simultaneously, the width of two gates should satisfy the warning requirement of each position flaw indication in the tube wall.
Summary of the invention
The purpose of this utility model provides a kind of UT (Ultrasonic Testing) control sample and measurement mechanism at steel pipe, utilize control sample, for the steel tube supersonic flaw detecting system provides the verification purposes, and can rectify an instrument and apparatus operating parameters, the combination property of verification fault detection system, comparative evaluation's flaw indication.
For achieving the above object, the technical solution of the utility model is:
A kind of steel tube supersonic flaw detecting control sample, it comprises that three sections steel pipes are spliced, the end of every section steel pipe is processed into step respectively, so that splicing and make things convenient for welding fabrication; Process various artificial defects above every section steel pipe, be used for the verification purposes of various purposes; Wherein, first section steel pipe, one end inside surface is processed with a step, be used for splicing with end cap, inside surface with a certain distance from pipe end is processed with a longitudinal defect and transverse defect, be used for the length that the verification pipe end can not detection zone, this not detectable area length be the distance of above-mentioned two defectives from pipe end; The other end outside surface of first section steel pipe is processed a step, is used for the splicing with second section steel pipe; Second section steel pipe, its two ends inside surface are processed the step that is used for first, the 3rd section steel pipe splicing respectively, and tolerance adopts clearance fit between the three, and this step is also simulated the ring-type lamination defect of circumferencial direction; Second section inside and outside surface of steel pipe one end processes respectively and is used for the circumferential sensitivity difference of verification longitudinal defect is arranged, second section middle inside and outside surface of steel pipe is processed with transverse defect respectively, and the other end pipe end inside surface of second section steel pipe is processed with flat-bottom hole or the flat-bottom slot that is used for the verification lamination defect; The 3rd section steel pipe, an end outside surface that is connected with second section steel pipe is processed three steps successively, and wherein, step is used for the splicing with second section steel pipe, and two other is the step that is used for the dimensional measurement of verification wall thickness and external diameter etc.; Step of this end inside surface processing; Processing one longitudinal defect and the transverse defect of the other end outside surface of the 3rd section steel pipe.
The utility model steel tube supersonic flaw detecting measurement mechanism, it comprises, a platform; Two carriages are arranged at above the platform; Control sample is positioned on two carriages; Measuring mechanism is arranged on the platform, comprises that one is arranged at the base on the platform, is arranged at the montant on the base, is sheathed on first slide block on the montant, and an end is connected in the cross bar of first slide block, is arranged at a dial gauge of the cross bar other end.
Further, between described first slide block and the montant rubber tight loop is set, a screw that is communicated with the rubber tight loop is offered in the first slide block side, and be provided with one can be against the adjusting handle of rubber tight loop.
In addition, also comprise second slide block, this second slide block is axially offered one and is kept supplying the through hole that glides and establish, establish the rubber tight loop in the through hole, the dial gauge handle is inserted in the rubber tight loop, a screw that is communicated with the rubber tight loop is offered in the second slide block side, and be provided with one can be against the adjusting handle of rubber tight loop.
Offer the through hole of establishing for the cross bar cunning on described first, second slide block horizontal direction, establish respectively in the through hole and be sheathed on cross bar outer rubber tight loop, first, second slide block side is offered a screw that is communicated with the rubber tight loop respectively, and be provided with one respectively can be against the adjusting handle of rubber tight loop.
According to the conditional request of on-the-spot method of detection and automatic flaw detection apparatus, the length of control sample generally is 4 meters.The check longitudinal defect need be processed 4 meters long control sample, and control sample is delivered to probe positions, makes the cannelure of alignment probe middle part outside surface, adjusts the high precision adjusting mechanism, makes the ultrasonic reflections signal of outside surface cannelure show the highest on instrument.And then transport control sample, and make the inside surface cannelure to probe positions, adjust the high precision adjusting mechanism, make the ultrasonic reflections signal of inside surface cannelure on instrument, show the highest.Because the signal demand of inside and outside groove is adjusted repeatedly repeatedly, just can reach optimum condition, and control sample middle part inside surface does not have cannelure, need transport control sample, the inside and outside surface longitudinal groove in blind area, two ends is won over debugging, the inconvenient debugging of defect-detecting equipment.If at the control sample middle part, process an outside surface cannelure and an inside surface cannelure respectively, just can easily debug defect-detecting equipment.
Processing control sample middle part inside surface cannelure is difficulty relatively, and the control sample internal diameter is more little, process difficultly more, and general cutter can only go deep into 0.4 meter of control sample inside.For this reason, with 4 meters long control sample raw material trisect, in the interlude processing behind table cannelure, the appearance cannelure, welding fabrication again.Like this, just solved the problem of debugging the surfaces externally and internally cannelure simultaneously.Groove is processed in the semi-manufacture end of three sections samples, directly three sections sample welding is got up, difficult to guarantee the straight degree and the concentricity of control sample.The way that solves is that the end of every section sample is processed into step respectively, is reprocessed into groove, so that splicing and make things convenient for welding fabrication.
Increased an inside surface cannelure in the middle of the utility model control sample, convenient debugging defect-detecting equipment.Simultaneously, the inside and outside surface longitudinal groove in blind area, two ends still exists, and can detect the signal of blind area, two ends.New control sample is processed with cannelure and transverse groove simultaneously, does not produce interference in the use, can satisfy the debugging requirement of check longitudinal defect and transverse defect simultaneously.
The concerned countries standard that the layering flaw detection is adopted is GB/T20490, " pressure-bearing is seamless and the Ultrasonic Detection of welding (except the submerged arc welding) steel pipe layering shortcoming ".The control sample of this standard definition is used to calibrate non-destructive detecting device, ultrasonic equipment should adopt the tubulose sample to calibrate, employing has the control sample of flat-bottom hole, square or rectangular recess and calibrates, flat-bottom hole, square or rectangular recess should be processed on the inside surface of sample pipe, width is 6 millimeters, and depth of groove is 1/4 to 1/2 of a steel pipe nominal wall thickness.
Standard GB/T20490 does not stipulate flat-bottom hole or the groove particular location on control sample, does not stipulate the length of control sample yet.Processing for convenience and debugging, before three sections sample semi-manufacture do not weld, rectangular recess of an end of interlude processing, the layering flaw detection that is used to calibrate non-destructive detecting device.
Detect wall thickness and external diameter, the standard of main reference home and overseas.National standard is GB/T11344, " contact ultrasonic pulse echo method thickness measuring ".The check block of this standard definition is one or more known velocity of sound, the test block of known thickness.The method generally is used for manual thickness measuring.And the scene is an automation equipment, employing be non-contact type ultrasonic pulse echo method thickness measuring, need the processing control sample identical with steel pipe to be measured.Foreign standard is ISO10543, " pressure-bearing is seamless and the Ultrasonic Detection of welding (except the submerged arc welding) thickness of steel pipe ".The check block of this standard definition is the known velocity of sound, the tubulose test block of known thickness.This standard is not stipulated the length and the concrete job operation of control sample.Processing for convenience and debugging, before three sections sample semi-manufacture did not weld, wherein an end of one section was processed into physical dimension measurement step and interior table size measurement step.Because be accurate machine work, the physical dimension of this section sample, interior table size all are known, wall thickness also is known, can be used to calibrate detection wall thickness, the detection external diameter of non-destructive detecting device.
Along with the raising of tube product quality requirements, can not there be longitudinal defect, transverse defect, lamination defect on the customer requirements steel pipe, important steel pipe also requires to detect wall thickness, external diameter etc.For this reason, many sample pipes are prepared by some producer, are used for the flaw detection of different purposes.Can satisfy single detection requirement though do like this, cause the waste of steel.The longitudinal defect carrying out flaw detection is only done by the producer that also has, and other are not done, and have brought very big quality risk.Debug for convenience, improve the service efficiency of control sample simultaneously, the utility model adopts the steel pipe segmental machining, and the welding fabrication mode is processed control sample.Compare with whole section common processing mode, obviously increase artificial defect kind and quantity on the control sample, can be on a control sample, for the steel tube supersonic flaw detecting system provides multiple verification purposes, comprise and detect longitudinal defect, transverse defect, lamination defect, outer diameter of steel pipes, steel pipe thickness.Step butt joint of the present utility model and groove welding processing mode are compared with single groove welding processing mode, and welding precision and quality are significantly improved.
Advantage of the present utility model is:
The utility model adopts the steel pipe segmental machining, and the welding fabrication mode is processed control sample.Compare with whole section common processing mode, obviously increase artificial defect kind and quantity on the control sample, can be on a control sample, for the steel tube supersonic flaw detecting system provides multiple verification purposes, comprise and detect longitudinal defect, transverse defect, lamination defect, outer diameter of steel pipes, steel pipe thickness.Step butt joint of the present utility model and groove welding processing mode are compared with single groove welding processing mode, and welding precision and quality are significantly improved.
Description of drawings
Fig. 1 is the front view of steel tube supersonic flaw detecting control sample of the present utility model.
Fig. 2 is the main pseudosection of steel tube supersonic flaw detecting control sample of the present utility model.
Fig. 3 is the measurement mechanism front view of steel tube supersonic flaw detecting control sample of the present utility model.
Fig. 4 is the measurement mechanism side view of steel tube supersonic flaw detecting control sample of the present utility model.
Fig. 5 is the measurement mechanism top plan view of steel tube supersonic flaw detecting control sample of the present utility model.
Embodiment
Referring to Fig. 1, Fig. 2, a kind of steel tube supersonic flaw detecting control sample A of the present utility model, it comprises that three sections steel pipes are spliced, the end of every section steel pipe is processed into step respectively, so that splicing and make things convenient for welding fabrication; Process various artificial defects above every section steel pipe, be used for the verification purposes of various purposes; Wherein,
First section steel pipe 1, one end inside surface is processed with a step 11, be used for splicing with end cap, inside surface with a certain distance from pipe end is processed with a longitudinal defect 12 and transverse defect 13, be used for the length that the verification pipe end can not detection zone, this not detectable area length be the distance of above-mentioned two defectives from pipe end; The other end outside surface of first section steel pipe is processed a step 11 ', is used for the splicing with second section steel pipe 2;
Second section steel pipe 2, its two ends inside surface are processed the step 21,21 ' that is used for 1,3 splicings of first, the 3rd section steel pipe respectively, and tolerance adopts clearance fit between the three, and this step is also simulated the ring-type lamination defect of circumferencial direction; Second section inside and outside surface of steel pipe 2 one ends processes respectively and is used for the circumferential sensitivity difference of verification longitudinal defect 22,22 ' is arranged, second section middle inside and outside surface of steel pipe is processed with transverse defect 23,23 ' respectively, and the other end pipe end inside surface of second section steel pipe 2 is processed with flat-bottom hole or the flat-bottom slot 24 that is used for the verification lamination defect;
The 3rd section steel pipe 3, an end outside surface that is connected with second section steel pipe 2 is processed three steps 31,32,33 successively, wherein, step 31 is used for the splicing with second section steel pipe 2, and two other is the step 32,33 that is used for the dimensional measurement of verification wall thickness and external diameter etc.; Step 34 of this end inside surface processing; The other end outside surface of the 3rd section steel pipe 3 is processed with a longitudinal defect 35 and transverse defect 36.
Referring to Fig. 3～Fig. 5, the utility model steel tube supersonic flaw detecting measurement mechanism, it comprises, a platform 4; Two carriages 5,5 ' are arranged at above the platform 4; Control sample A is positioned on two carriages 5,5 '; Measuring mechanism 6 is arranged on the platform 4, comprises that one is arranged at the base 61 on the platform, be arranged at the montant 62 on the base 61, be sheathed on first slide block, 63, one ends on the montant 62 and be connected in the cross bar 64 of first slide block 63, be arranged at a dial gauge 65 of cross bar 64 other ends.
Rubber tight loop 66, the first slide blocks 63 sides are set between described first slide block 63 and the montant 62 offer a screw that is communicated with rubber tight loop 66, and be provided with one can be against the adjusting handle 67 of rubber tight loop 66.
Further, also comprise second slide block 68, this second slide block 68 is axially offered one and is kept supplying the through hole that glides and establish, establish rubber tight loop 66 ' in the through hole, dial gauge 65 handles are inserted in rubber tight loop 66 ', a screw that is communicated with rubber tight loop 66 ' is offered in second slide block, 68 sides, and be provided with one can be against the adjusting handle 67 ' of rubber tight loop.
Offer on described first, second slide block 63,68 horizontal directions for the cross bar 64 sliding through holes of establishing, establish respectively in the through hole and be sheathed on cross bar 64 outer rubber tight loops 66 ", 66 ' ", first, second slide block 63,68 sides are offered a screw that is communicated with the rubber tight loop respectively, and be provided with one respectively can be against the adjusting handle 69,69 ' of rubber tight loop.
Circumferencial direction along control sample rotates, and observes the numerical value change of dial gauge, when arriving minimum value, show that control sample is in the circumferencial direction peak in this position, in order to align control sample, can the releasing lever nut, make pull bar be in relaxation state, knock control sample with wooden mallet, its diameter run-out numerical value is reduced, rotate control sample, continue to measure control sample diameter run-out numerical value, after reaching satisfied numerical value, again pull bar is tightened.
Under control sample aligning state, with the groove position spot welding of welding gear, be rotated further control sample at three sections steel pipe interfaces, measure under the qualified situation of diameter run-out numerical value, finish welding technology with welding gear at interface position.
Claims (5)
1. a steel tube supersonic flaw detecting control sample is characterized in that, comprises that three sections steel pipes are spliced, and the end of every section steel pipe is processed into step respectively, so that splicing and make things convenient for welding fabrication; Process various artificial defects above every section steel pipe, be used for the verification purposes of various purposes; Wherein,
First section steel pipe, one end inside surface is processed with a step, is used for the splicing with end cap, is processed with a longitudinal defect and transverse defect with a certain distance from the inside surface of pipe end, be used for the length that the verification pipe end can not detection zone, this not detectable area length be the distance of above-mentioned two defectives from pipe end; The other end outside surface of first section steel pipe is processed a step, is used for the splicing with second section steel pipe;
Second section steel pipe, its two ends inside surface are processed the step that is used for first, the 3rd section steel pipe splicing respectively, and tolerance adopts clearance fit between the three, and this step is also simulated the ring-type lamination defect of circumferencial direction; Second section inside and outside surface of steel pipe one end processes respectively and is used for the circumferential sensitivity difference of verification longitudinal defect is arranged, second section middle inside and outside surface of steel pipe is processed with transverse defect respectively, and the other end pipe end inside surface of second section steel pipe is processed with flat-bottom hole or the flat-bottom slot that is used for the verification lamination defect;
The 3rd section steel pipe, an end outside surface that is connected with second section steel pipe is processed three steps successively, and wherein, step is used for the splicing with second section steel pipe, and two other is the step that is used for the dimensional measurement of verification wall thickness and external diameter etc.; Step of this end inside surface processing; The other end outside surface of the 3rd section steel pipe is processed with a longitudinal defect and transverse defect, is used for the length that the verification pipe end can not detection zone, this not detectable area length be the distance of above-mentioned two defectives from pipe end.
2. the steel tube supersonic flaw detecting measurement mechanism is characterized in that, comprise,
One platform;
Two carriages are arranged at above the platform;
Control sample is positioned on two carriages;
Measuring mechanism is arranged on the platform, comprises that one is arranged at the base on the platform, is arranged at the montant on the base, is sheathed on first slide block on the montant, and an end is connected in the cross bar of first slide block, is arranged at a dial gauge of the cross bar other end.
3. steel tube supersonic flaw detecting measurement mechanism as claimed in claim 2, it is characterized in that, between described first slide block and the montant rubber tight loop is set, a screw that is communicated with the rubber tight loop is offered in the first slide block side, and be provided with one can be against the adjusting handle of rubber tight loop.
4. steel tube supersonic flaw detecting measurement mechanism as claimed in claim 2, it is characterized in that, also comprise second slide block, this second slide block is axially offered one and is kept supplying the through hole that glides and establish, establish the rubber tight loop in the through hole, the dial gauge handle is inserted in the rubber tight loop, and a screw that is communicated with the rubber tight loop is offered in the second slide block side, and be provided with one can be against the adjusting handle of rubber tight loop.
5. steel tube supersonic flaw detecting measurement mechanism as claimed in claim 2, it is characterized in that, offer the through hole of establishing for the cross bar cunning on described first, second slide block horizontal direction, establish respectively in the through hole and be sheathed on cross bar outer rubber tight loop, first, second slide block side is offered a screw that is communicated with the rubber tight loop respectively, and be provided with one respectively can be against the adjusting handle of rubber tight loop.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201763223U CN202083676U (en) | 2011-05-27 | 2011-05-27 | Steel tube ultrasonic wave flaw detection comparison sample and measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201763223U CN202083676U (en) | 2011-05-27 | 2011-05-27 | Steel tube ultrasonic wave flaw detection comparison sample and measuring device |
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| CN202083676U true CN202083676U (en) | 2011-12-21 |
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| CN2011201763223U Expired - Fee Related CN202083676U (en) | 2011-05-27 | 2011-05-27 | Steel tube ultrasonic wave flaw detection comparison sample and measuring device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018114A (en) * | 2016-08-11 | 2016-10-12 | 南通永大管业股份有限公司 | High pressure damage-resistant testing device of steel pipe |
| CN106706763A (en) * | 2017-01-18 | 2017-05-24 | 天津赛达鑫源检验检测有限公司 | Portable and adjustable tubular-product inner-diameter ultrasonic detection rod |
| CN107894463A (en) * | 2017-12-28 | 2018-04-10 | 中国石油天然气集团公司管材研究所 | The reference block of ERW steel pipe seam electromagnetic acoustic automatic detections and design method |
| CN111947608A (en) * | 2019-05-17 | 2020-11-17 | 宝武特种冶金有限公司 | Ultrasonic verification and comparison method for measuring wall thickness of seamless steel pipe |
| CN113945629A (en) * | 2021-08-30 | 2022-01-18 | 江苏圣珀新材料科技有限公司 | Method for avoiding eddy current detection blind area of titanium welded pipe |
-
2011
- 2011-05-27 CN CN2011201763223U patent/CN202083676U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018114A (en) * | 2016-08-11 | 2016-10-12 | 南通永大管业股份有限公司 | High pressure damage-resistant testing device of steel pipe |
| CN106706763A (en) * | 2017-01-18 | 2017-05-24 | 天津赛达鑫源检验检测有限公司 | Portable and adjustable tubular-product inner-diameter ultrasonic detection rod |
| CN107894463A (en) * | 2017-12-28 | 2018-04-10 | 中国石油天然气集团公司管材研究所 | The reference block of ERW steel pipe seam electromagnetic acoustic automatic detections and design method |
| CN107894463B (en) * | 2017-12-28 | 2023-12-08 | 中国石油天然气集团有限公司 | Reference block for electromagnetic ultrasonic automatic detection of ERW steel pipe weld joint and design method |
| CN111947608A (en) * | 2019-05-17 | 2020-11-17 | 宝武特种冶金有限公司 | Ultrasonic verification and comparison method for measuring wall thickness of seamless steel pipe |
| CN111947608B (en) * | 2019-05-17 | 2022-07-15 | 宝武特种冶金有限公司 | Ultrasonic verification and comparison method for measuring wall thickness of seamless steel tube |
| CN113945629A (en) * | 2021-08-30 | 2022-01-18 | 江苏圣珀新材料科技有限公司 | Method for avoiding eddy current detection blind area of titanium welded pipe |
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