CN108918219A - The preparation method of non-destructive testing with dreg defect weld seam simulating test pieces - Google Patents
The preparation method of non-destructive testing with dreg defect weld seam simulating test pieces Download PDFInfo
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- CN108918219A CN108918219A CN201810703142.2A CN201810703142A CN108918219A CN 108918219 A CN108918219 A CN 108918219A CN 201810703142 A CN201810703142 A CN 201810703142A CN 108918219 A CN108918219 A CN 108918219A
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- skull
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- weld seam
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- simulating test
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/18—Submerged-arc welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/30—Arrangements for calibrating or comparing, e.g. with standard objects
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a kind of preparation methods of weld seam simulating test pieces of the non-destructive testing with dreg defect, include the following steps：One helper spring weldment and skull are provided, are machined with groove on each steel plate weldment；Successively steel plate weldment weld, backing welding and filling group, during filling weldering, quantity, the depth, the pre-buried corresponding skull in direction of default slag inclusion are pressed in corresponding weld metal layer, it is covered at skull at skull using filling welding and quick deposition, make pre-buried skull have little time to melt emersion and be stranded in weld seam, to form dreg defect, continues to be filled other layers weldering, until welding finishes, that is, the Carbon steel welds simulating test pieces with dreg defect are made.The present invention is by manually preparing slag inclusion, it can be achieved that slag inclusion shape（Strip or circle）, the features such as depth control, prepare the weld seam simulating test pieces for presetting dreg defect, meet the application demand of ultrasound examination or other non-destructive testings.
Description
Technical field
The invention belongs to technical field of nondestructive testing, and in particular to a kind of non-destructive testing with dreg defect is simulated with weld seam
The preparation method of test block.
Background technique
Ultrasound examination is a kind of important non-destructive testing technology, because its to the sensitivity of inside workpiece gross imperfection compared with
Height, when operation, are influenced smaller by external condition, are widely used in the detection of metal welding seam.Ultrasonic detecting technology is by development packet
Include conventional Ultrasound detection technique（UT）, diffraction time difference ultrasonic detecting technology（TOFD）And phased array detection technique（PAUT）.
Reference block and reference block for Ultrasound Instrument probe system performance calibration and testing calibration are ultrasound examinations
The important component of technology, according to the regulation of NB/T47013, the artificial reflector of reference block and reference block is all made of machine
It is process, and the reflector in actual welds, therefore have inside weld seam such as the defects of crackle, stomata, slag inclusion in diversity
The simulating test pieces of corresponding real defect, more can operating condition in true simulation practical work piece.
In metal component, slag inclusion is one of the defect most abstained from metal welding seam, to different size and depth slag inclusion
Detection sensitivity be to measure a kind of important indicator of lossless detection method superiority and inferiority, the detection and accurate judgement to dreg defect
It is the basic demand to nondestructive testing personnel.Therefore, with a certain amount of artificial reflector（Defect）Weld seam simulating test pieces to super
Sound detection operator provides a kind of effective simulated training method, meanwhile, for there is the simulation examination of the weld seam of known internal defect
Block is also different the important tool that detection method carries out Sensitivity comparison.Due to the type of defect, number in actual welding workpiece
Amount and position exist can not pre-control, the defects of weld seam randomness is larger, therefore, prepares a certain number of known internal defects
Weld seam Simulated Plate have important meaning to field of non destructive testing.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation method of weld seam simulating test pieces of the non-destructive testing with dreg defect,
It can prepare dreg defect in weld seam, realize to slag inclusion depth and shape（Strip or circle）Etc. features control, it is full
The application demand of the detection methods such as sufficient ultrasonic wave practice practical operation.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of preparation method of weld seam simulating test pieces of the non-destructive testing with dreg defect, includes the following steps：
One helper spring weldment and skull are provided, are machined with groove on each steel plate weldment；
Successively steel plate weldment weld, backing welding and filling group, during filling weldering, be pressed in corresponding weld metal layer
Quantity, the depth, the pre-buried corresponding skull in direction of default slag inclusion, using filling welding and quick deposition covering slag at skull
At shell, makes pre-buried skull have little time to melt emersion and be stranded in weld seam, to form dreg defect, continue to other layers
It is filled weldering, until welding finishes, that is, the Carbon steel welds simulating test pieces with dreg defect are made.
According to the above technical scheme, it before pre-buried skull, is formed in weld metal for holding by the way of mechanical grinding
Receive the groove of skull, skull is pre-buried in the groove.
According to the above technical scheme, the shape of the groove includes round or bar shaped.
According to the above technical scheme, the welding manner between steel plate weldment includes welding electrode arc welding, CO2Gas shield welding and argon arc
Weldering.
According to the above technical scheme, the welding slag shell generated when the skull includes welding electrode arc welding or submerged arc welding.
The beneficial effect comprise that：The present invention utilizes the skull generated when welding electrode arc welding or submerged arc welding,
And the pre-buried skull in weld metal, then implement filling weldering, make at deposited metal covering skull, and have little time pre-buried skull
It melts emersion and is stranded in steel weld seam, to form the dreg defect completely the same with defect in kind, can be realized to simulation
Slag inclusion shape in test block（Strip or circle）, the features such as depth control, be conducive to non-destructive testing simulated operation.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing：
Fig. 1 is the structural schematic diagram using the Carbon steel welds simulating test pieces prepared by the present invention with dreg defect；
Fig. 2 is the process flow chart using Carbon steel welds simulating test pieces of the present invention preparation with longitudinal strip slag inclusion；
Fig. 3 is the process flow chart of the Carbon steel welds simulating test pieces using present invention preparation with round slag inclusion.
In figure：1- steel plate weldment, 2- weld metal, 3- strip slag inclusion, 4- strip groove, 5- circular groove, 6- circle folder
Slag.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
As shown in Figure 1-Figure 3, a kind of preparation method of the weld seam simulating test pieces of the non-destructive testing with dreg defect, including with
Lower step：
There is provided a helper spring weldment 1 and with prepare a certain amount of skull in advance, be machined with groove on each steel plate weldment；
Successively steel plate weldment weld, backing welding and filling group, during filling weldering, in weld metal layer（Weld seam gold
Belong to 2 by being formed after welding rod welding fusing）Interior quantity, depth, the pre-buried corresponding skull in direction by default slag inclusion, in skull
Place makes pre-buried skull have little time to melt emersion and be stranded in weld seam using filling at welding and quickly deposition covering skull,
To form dreg defect（Strip slag inclusion 3 and round slag inclusion 6）, continue to be filled weldering to other layers, until welding finishes,
The Carbon steel welds simulating test pieces with dreg defect are made.
In a preferred embodiment of the invention, as shown in Figure 2 and Figure 3, it is adopted before pre-buried skull for the ease of placing skull
The groove for accommodating skull is formed in weld metal with the mode of mechanical grinding（Groove includes that strip groove 4 and circle are recessed
Slot 5）, skull is embedded in groove, groove shapes are determined according to the shape of required dreg defect（When filling skull, by groove
Filling up is advisable）, welding slag shell that skull generates when including welding electrode arc welding or submerged arc welding.
In a preferred embodiment of the invention, the welding manner between steel plate weldment includes welding electrode arc welding, CO2Gas shield welding
And argon arc welding.Steel material similar with examined workpiece or material chemical composition is produced in steel plate weldment blanking, is applicable not only to carbon steel
Material test block, is also applied for stainless steel material test block, and steel plate weldment is docked using X groove or list V groove.
Being exemplified below two specific embodiments, the present invention is described in detail.
Example one
The preparation method of non-destructive testing with longitudinal strip slag inclusion weld seam simulating test pieces, as shown in Fig. 2, including the following steps：
（1）Simulating test pieces blanking：Using common container Steel material Q345R material, thickness 40mm, blank size 500 × 150 ×
40mm, two pieces of steel plate weldments are using common asymmetry X groove；
（2）Weld preparation：To grinding process is carried out around weld seam, the surface irregularities such as iron rust are removed, expose metallic luster, along groove
After side carries out backing welding, then it is filled weldering together, at this time weld penetration about 15mm；
（3）Pre-buried skull：Using mechanical removal welding bead surface welding slag, along seam seam direction in one strip groove of weld seam center polishing
Ready skull is placed in the strip groove by 4, long 30mm, wide 4mm, strip groove away from about 15mm above weld seam test plate (panel), from
Starting striking outside the distance about 20mm of strip groove left end and is filled weldering, when welding herein, electric current is less than normal weld electric current, and
Speed will be faster than normal weld speed, and deposited metal is covered at skull, and pre-buried skull is made to have little time to melt emersion and be detained
In steel weld seam, when which welds, intermediate not blow-out is once soldered, and the deep about 15mm of the bar shaped dreg defect formed at this time, width are about
4mm, length 30mm；
（4）Post-processing：It is subsequent welding herein when, pay attention to that the coating burn through at slag inclusion the filling of other layers cannot be continued
Weldering when back gouging, notices that back chipping depth must not touch preset slag inclusion layer until welding finishes；
（5）Slag inclusion verifying：After prepared by test block, the presence of dreg defect can be confirmed in such a way that ray makes film detection.
Example two
The preparation method of non-destructive testing weld seam simulating test pieces with round slag inclusion, as shown in figure 3, including the following steps：
（1）Simulating test pieces blanking：Using common container Steel material Q235 material, thickness 30mm, blank size 500 × 150 ×
30mm, two pieces of steel plate weldments use single bevel groove；
（2）Weld preparation：To grinding process is carried out around weld seam, the surface irregularities such as iron rust are removed, expose metallic luster, first bottoming
Postwelding, then it is filled welding, until weld seam filling metal thickness reaches 20mm；
（3）Pre-buried skull：Using mechanical removal welding bead surface welding slag, using the method for machine drilling, it is round that one is bored on welding bead
Then ready skull is placed in the circular groove, from circular groove left end distance by groove 5, diameter about 6mm, deep about 4mm
Start striking outside about 20mm to carry out filling out system weldering, when welding herein, electric current is less than normal weld electric current, and speed will be faster than normal weldering
Speed is connect, deposited metal is covered at skull, makes pre-buried skull have little time to melt emersion and be stranded in steel weld seam, forms circle
Clevis slag 6, when which welds, intermediate not blow-out is once soldered；
（4）Post-processing：It is subsequent welding herein when, pay attention to that the coating burn through at slag inclusion the filling of other layers cannot be continued
Weldering, until welding finishes；
（5）Slag inclusion verifying：After prepared by test block, the presence of dreg defect can be confirmed by way of ray or ultrasound examination.
The present invention in specific application, using welding rod manual electric arc welding, after completing backing welding, during filling weldering,
Pre-set depth, along weld seam side's body to or the pre-buried skull in vertical weld direction, the shape of dreg defect as needed can make
It is standby to be in strip or round, skull is placed in the groove of polishing forming, continues to fill welding using welding rod, when filling welding,
It wants to make pre-buried skull have little time to melt emersion and be stranded in steel weld seam, to form slag inclusion at quick deposition covering skull
Defect.When preparing dreg defect, to prevent arc heat excessive, for a long time at high temperature by all fusing emersion welderings of a small amount of skull
Seam surface and slag inclusion cannot be formed.Welding bead middle layer Cross slat clevis slag can same method preparation, when need to prepare among welding bead
When the Cross slat clevis slag of layer, when middle layer transverse concave groove can not be using mechanical grinding formation, shape is swung laterally using welding rod
At transverse concave groove come preset skull.The present invention can be achieved to the slag inclusion shape in simulating test pieces（Strip or circle）, depth etc.
The control of feature prepares the weld seam simulating test pieces for presetting defect as needed, meets the application demand of ultrasound examination,
The weld seam simulating test pieces prepared in the lossless detection methods such as ray, TOFD can be applied to.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (5)
1. a kind of preparation method of the weld seam simulating test pieces of the non-destructive testing with dreg defect, which is characterized in that including following step
Suddenly：
One helper spring weldment and skull are provided, are machined with groove on each steel plate weldment；
Successively steel plate weldment is grouped, backing welding and filling weldering, during filling weldering, in corresponding weld metal layer by pre-
If the quantity of slag inclusion, depth, the pre-buried corresponding skull in direction, skull is covered using filling welding and quick deposition at skull
Place makes pre-buried skull have little time to melt emersion and be stranded in weld seam, to form dreg defect, continue to other layers into
The Carbon steel welds simulating test pieces with dreg defect are made until welding finishes in row filling weldering.
2. preparation method of the non-destructive testing according to claim 1 with dreg defect with weld seam simulating test pieces, feature
It is, before pre-buried skull, the groove for accommodating skull is formed in weld metal by the way of mechanical grinding, by skull
It is pre-buried in the groove.
3. preparation method of the non-destructive testing according to claim 2 with dreg defect with weld seam simulating test pieces, feature
It is, the shape of the groove includes round or bar shaped.
4. preparation method of the non-destructive testing according to claim 1 with dreg defect with weld seam simulating test pieces, feature
It is, the welding manner between steel plate weldment includes welding electrode arc welding, CO2Gas shield welding and argon arc welding.
5. preparation method of the non-destructive testing according to claim 1 with dreg defect with weld seam simulating test pieces, feature
It is, the welding slag shell that the skull generates when including welding electrode arc welding or submerged arc welding.
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Cited By (5)
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| CN110132665A (en) * | 2018-02-02 | 2019-08-16 | 中国电建集团山东电力建设第一工程有限公司 | A kind of production method of circular flaw test specimen |
| CN111912855A (en) * | 2020-07-30 | 2020-11-10 | 北京首钢股份有限公司 | Method for acquiring rolling evolution process of large inclusions in casting blank |
| CN113049331A (en) * | 2021-03-12 | 2021-06-29 | 北京中实国金国际实验室能力验证研究有限公司 | Preparation method of nondestructive testing simulation test block and simulation test block |
| CN114378542A (en) * | 2022-02-09 | 2022-04-22 | 江苏航运职业技术学院 | Method for manufacturing standard test block for nondestructive testing of crack defects |
| CN114871539A (en) * | 2022-04-28 | 2022-08-09 | 武汉一冶钢结构有限责任公司 | Preparation method of austenitic stainless steel test block with slag inclusion defect for nondestructive testing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20181130 |