CN109253936A - A kind of workpiece weld seam device for searching - Google Patents
A kind of workpiece weld seam device for searching Download PDFInfo
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- CN109253936A CN109253936A CN201811330136.3A CN201811330136A CN109253936A CN 109253936 A CN109253936 A CN 109253936A CN 201811330136 A CN201811330136 A CN 201811330136A CN 109253936 A CN109253936 A CN 109253936A
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- workpiece
- thimble
- weld seam
- welding seam
- sleeve
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- 238000012360 testing method Methods 0.000 claims abstract description 31
- 238000003466 welding Methods 0.000 claims abstract description 23
- 238000001179 sorption measurement Methods 0.000 claims description 8
- 230000005294 ferromagnetic effect Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000000758 substrate Substances 0.000 abstract description 22
- 238000009659 non-destructive testing Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 11
- 238000009434 installation Methods 0.000 description 7
- 239000011324 bead Substances 0.000 description 6
- 230000014759 maintenance of location Effects 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000035772 mutation Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/42—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
- G01N2203/0078—Hardness, compressibility or resistance to crushing using indentation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0296—Welds
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of workpiece weld seam device for searching, comprising: is capable of fixing in the escape groove being provided at the top and bottom of perforation main board on the main board on workpiece, main board；It is symmetrically distributed in the guide groove of escape groove length direction two sides；Sliding support, sliding support include the mounting base for being located at middle part and the sliding rail for being symmetricly set on mounting base two sides, and sliding rail is embedded in guide groove, and a through-hole is offered in the middle part of mounting base；Across the thimble of through-hole and escape groove, the upper end of thimble exposes to the top of mounting base, and the upper end of thimble is provided with external screw thread, and lower end exposes to the bottom of main board；The hardness test head of the lower end of thimble is mounted on by spring；It is threaded in the force nut of thimble upper end.The workpiece weld seam device for searching can find the line of demarcation between weld seam and substrate by hardness test head generated dent depth on workpiece, and then determine position while welding according to the line of demarcation, provide conveniently for subsequent non-destructive testing.
Description
Technical field
The present invention relates to service technique field, in particular to a kind of workpiece weld seam device for searching.
Background technique
Weld seam is the high temperature using welding heat source, the seam that the metal molten of welding rod and seam crossing is formed by connecting, weld seam gold
It is after belonging to cooling, i.e., two weldment connections are integral.According to the difference of the shape of weld metal and weldment mutual alignment, point docking
Weld seam, fillet weld, plug weld and arc spot welding etc..
Butt weld is most common a kind of structural shape in engineering, typically there is reinforcement, and with national economy
Development, more and more high-grade, high parameter pressure vessels, pressure pipeline, extra-supercritical unit the workpiece such as header in order to
Improve the stress level of welding point, the structural stress generated due to reducing the mutation of the shape caused by weld reinforcement, thus will weldering
Stitch reinforcement removal.The later period is given in this way, brings big inconvenience especially with the non-destructive testing work in maintenance process.
Weld seam is position most weak in workpiece, and the non-destructive testing of workpiece works primarily directed to weld seam, and is detecting
In need to position weld seam, if position while welding is unclear, position inaccurate, non-destructive testing work can not just carry out.
Therefore how the technical issues of weld seam is current those skilled in the art's urgent need to resolve is accurately found.
Summary of the invention
The purpose of the present invention is to disclose a kind of workpiece weld seam device for searching, so as to weld seam is quick and precisely found, with
Facilitating subsequent is that weld seam does non-destructive testing.
In order to achieve the above objectives, workpiece weld seam device for searching provided by the invention, comprising:
It is capable of fixing in being provided on the main board on workpiece, the main board at the top and bottom of the perforation main board
Escape groove；
It is symmetrically distributed in escape groove length direction two sides guide groove；
Sliding support, the sliding support include being located at the mounting base at middle part and being symmetricly set on the mounting base two sides
Sliding rail, the sliding rail are embedded in the guide groove, and a through-hole is offered in the middle part of the mounting base；
Across the thimble of the through-hole and the escape groove, the upper end of the thimble exposes to the top of the mounting base,
And the upper end of the thimble is provided with external screw thread, lower end exposes to the bottom of the main board；
The hardness test head of the lower end of the thimble is mounted on by spring；
It is threaded in the force nut of the thimble upper end.
Preferably, the bottom of the main board is provided with the adsorption magnet for being adsorbed on ferromagnetic workpiece.
Preferably, the adsorption magnet is electromagnet or permanent magnet.
Preferably, device fixation hole is also provided on the main board, described device fixation hole for lash rope for wearing
It crosses and the main board is fixed on the workpiece.
Preferably, the diameter of the through-hole is equal with the diameter of the thimble.
Preferably, pressure test device is additionally provided between the force nut and the mounting base.
Preferably, the pressure test device is strain gauge pressure sensor.
Preferably, scale is additionally provided with along the length direction of the guide groove.
Preferably, the hardness test head includes sleeve and sintered carbide ball, and the sintered carbide ball is arranged in the set
One end of cylinder, the other end of the sleeve is set in the lower end of the thimble, and the sleeve inner is provided with the first limit convex
It rises and the installation of the first spring is raised；
The lower end of the thimble is provided with the second retention bead and second spring installation protrusion；
Behind the lower end that the sleeve is inserted in the thimble, first retention bead and the second limit convex card lifting
Connect, to prevent the sleeve from falling off, and one end of the spring and first spring installation protrusion offset, the other end with it is described
Second spring installation protrusion offsets.
Preferably, the sintered carbide ball rolls one end that the sleeve is arranged in.
Due to the special process of appearance of weld, weld seam and the difference of substrate metallographic structure are very big, performance macroscopically
Be exactly weld seam and substrate difference in hardness it is very big, identical pressure is applied on substrate and is applied to by hardness test device
Generated dent depth just has apparent difference on weld seam, if the pressure that hardness test device remains unchanged, moves from substrate
Position while welding is moved, then can be mutated in the depth of weld seam and the boundary line position dent of substrate, by monitoring the mutation
Journey can accurately find toe of the weld.
Workpiece weld seam device for searching disclosed in this invention is namely based on above-mentioned principle and designs, and main board is capable of fixing
On workpiece, thimble penetrates the through-hole opened up in mounting base, and passes through escape groove, and hardness test head is installed by spring
In the lower end of thimble, thimble can be made to apply pressure to workpiece by tightening force nut, then be driven and pushed up by sliding support
Needle is slided along guide groove, when hardness test head by workpiece substrate and weld seam line of demarcation when, due to the change of dent depth
Change, hardness test head can beat, which can intuitively be found by observing spring, can find weldering by the bounce
Line of demarcation between seam and substrate, and then position while welding is determined according to the line of demarcation, it is provided conveniently for subsequent non-destructive testing.
Detailed description of the invention
Fig. 1 is the operation schematic diagram of the workpiece weld seam device for searching disclosed in an embodiment of the present invention；
Fig. 2 is the schematic top plan view of the workpiece weld seam device for searching disclosed in Fig. 1.
Wherein, plate based on 1,2 be device fixation hole, and 3 be adsorption magnet, and 4 be workpiece, and 5 be weld seam, and 6 be hard alloy
Ball, 7 be hardness test head, and 8 be sliding rail, and 9 be mounting base, and 10 be force nut, and 11 be thimble, and 12 be spring, and 13 be escape groove,
14 be guide groove, and 15 be scale.
Specific embodiment
Core of the invention is to provide a kind of workpiece weld seam device for searching, so as to weld seam is quick and precisely found, with
Facilitating subsequent is that weld seam does non-destructive testing.
Incorporated by reference to Fig. 1 and Fig. 2, disclosed in this invention workpiece weld seam device for searching include main board 1, sliding support,
Thimble 11, hardness test head, force nut 10, main board 1 are capable of fixing on workpiece, and perforation main body is provided on main board 1
The escape groove of the top and bottom of plate 1 is also symmetrically distributed with two guide grooves in the two sides of 13 length direction of escape groove on main board 1
14, sliding support includes the mounting base 9 and the sliding rail 8 for being symmetricly set on 9 two sides of mounting base positioned at middle part, and sliding rail 8, which is embedded into, leads
Into slot 14, to realize entire sliding support being slidably installed on main board 1, the middle part of mounting base 9 offers a through-hole, top
Needle 11 passes through through-hole and escape groove 13, and the upper end of thimble 11 exposes to the top of mounting base 9, and the upper end of thimble 11 is provided with
External screw thread, 11 lower end of thimble expose to the bottom of main board 1, and hardness test head is resiliently mounted under thimble 11 by spring 12
End.
It needs to be illustrated, in embodiments of the present invention, the bottom of so-called main board 1 refers to main board 1 and workpiece 4
Close to the side of (or corresponding), the top of main board 1 is away from the side of workpiece 4, and the lower end of thimble 11 refers to that thimble 11 closes on
One end of workpiece 4, the upper end of thimble 11 refer to the one end of thimble 11 far from workpiece 4.
Due to the special process of appearance of weld, weld seam 5 and the difference of substrate metallographic structure are very big, performance macroscopically
It is exactly that weld seam 5 and the difference in hardness of substrate are very big, identical pressure is applied on substrate and is applied to by hardness test device
Generated dent depth just has apparent difference on weld seam 5, if the pressure that hardness test device remains unchanged, moves from substrate
5 position of weld seam is moved, then can be mutated in weld seam 5 and the depth of the boundary line position dent of substrate, by monitoring the mutation
Process can accurately find toe of the weld.
Based on the above principles, when in use, mainboard is fixed for the workpiece weld seam device for searching disclosed in above-described embodiment
On workpiece, thimble 11 penetrates the through-hole opened up in mounting base 9, and passes through escape groove 13, and hardness test head passes through spring 12
It is resiliently mounted on the lower end of thimble 11, thimble 11 can be made to apply pressure to workpiece 4 by tightening force nut 10, then passed through
Sliding support drives thimble 11 to slide along guide groove 14, when hardness test head is by the substrate of workpiece 4 and the line of demarcation of weld seam 5
When, due to the variation of dent depth, hardness test head can beat, which can intuitively be found by observing spring, lead to
Line of demarcation between weld seam 5 and substrate can be found by crossing the bounce, and then determine position while welding according to the line of demarcation, be subsequent
Non-destructive testing provides convenient.
If weld seam 5 be it is regular, if pressure pipeline, pressure vessel girth joint section be circle, longitudinal seam is straight line
Type need to be in two position detections to weld seam for this kind of weld seam, and then the line of demarcation of two positions, which is connected, can seek whole
Position while welding such as the piece of pressure vessel head, then answers the several positions of multiselect to be confirmed if weld seam is irregular shape.
Fixed form of the main board 1 on workpiece 4 is unrestricted, as long as guaranteeing the fastening force between main board 1 and workpiece 4
It is able to bear the pressure that thimble 11 is applied to workpiece 4, in order to improve safety, can also be made between main board 1 and workpiece 4
Fastening force be that thimble 11 is applied to 1.2 times of 4 maximum pressure of workpiece, when workpiece 4 is ferrimagnet, in the present embodiment
The bottom of main board 1 is provided with the adsorption magnet 3 for being adsorbed on workpiece 4, as shown in fig. 1, if the main board 1 is in rule
Rectangle, then adsorption magnet 3 may be provided at the four corners position of the main board 1, which can be for by being driven by electricity
Generate magnetic electromagnet, or permanent magnet.
And for the workpiece of nonferromugnetic material, workpiece weld seam device for searching can not just be consolidated using adsorption magnet 3
It is scheduled on workpiece 4, for this purpose, being also provided with device fixation hole 2 in the present embodiment on main board 1, device fixation hole 2 is for supplying
Binding rope (such as steel wire) passes through, and main board 1 is fixed on workpiece 4, and fastening force caused by binding rope equally should be big
The pressure of workpiece 4 is applied in thimble 11.
In with sliding support sliding process, it is especially desirable to avoid thimble 11 from generating shaking relative to sliding support, because
This will lead to position record and deviation occurs, eventually results in 5 position of weld seam sought and deviation occurs, in the present embodiment, excellent
The diameter by through-hole of choosing with the diameter design of thimble 11 be it is equal, this make thimble 11 just can by through-hole, and with
There is gap small as far as possible between through-hole, thimble 11 is avoided to generate shaking when sliding with sliding support, guarantee position record
Accuracy.
It, can also be further between force nut 10 and mounting base 9 other than length in addition to directly observing spring changes
Pressure test device is set, once dent change in depth, then the length of spring 12 will change, and 12 elastic force of spring is consequently also
It changes, this will lead to the pressure between force nut 10 and mounting base 9 and generates variation, and pressure test device is applied by monitoring
Pressure change between power nut 10 and mounting base 9 can accurately obtain the boundary line position between substrate and weld seam 5.
In order to guarantee the accuracy and timeliness of pressure monitoring, the pressure test device in the present embodiment is strain chip pressure
Force snesor.Certainly, the other kinds of pressure sensor that those skilled in the art can also be met the requirements using precision.
In order to further increase the accuracy of boundary line position record, along guide groove 14 on main board 1 in the present embodiment
Length direction be additionally provided with scale 15, by the scale on scale 15 can accurate recording dent depth generate variation position,
So that it is determined that position while welding.
Hardness test head 7 specifically includes sleeve and sintered carbide ball 6, and one end of sleeve, sleeve is arranged in sintered carbide ball 6
The other end be set in the lower end of thimble 11, and sleeve be internally provided with the first retention bead and the installation of the first spring is convex
It rises；The lower end of thimble 11 is provided with the second retention bead and second spring installation protrusion, and in the case where sleeve is inserted in thimble 11
Behind end, the first retention bead and the second retention bead are clamped, and to prevent sleeve from falling off, one end of spring 12 and the first spring are installed
Protrusion offsets, and the other end offsets with second spring installation protrusion, and when sleeve compression moves up, compressed spring 12 is made spring
12 length shortens.
It is closed to reduce the hard in the frictional force in sliding process between hardness test head 7 and workpiece 4, the present embodiment
Gold goal 6 rolls one end that sleeve is arranged in, and the diameter of sintered carbide ball 6 is 5mm.
Since sliding speed will affect the quality of object, since the change in depth of dent itself is smaller, in order to as far as possible
Guarantee the accuracy for the position while welding sought, sliding support preferably at the uniform velocity slides.
The present apparatus by physical method seek workpiece weld seam, there is no asked what workpiece damaged using chemical method
Topic, for thickness of workpiece, generated dent be can be ignored during finding weld seam, belong to non-destructive testing.
It needs to be illustrated, before use of the device, can come by searching for data such as the original plan sheets of workpiece
It determines the Position Approximate of weld seam for needing to check, which is slided as weld seam domain of the existence, is then removed with grinding wheel
The impurity such as greasy dirt, oxide skin, the iron rust on weld seam domain of the existence surface, with coarse sandpaper (being not more than No. 60), there are areas for polishing welding seams
Then domain is polishing to coarse sandpaper trace with No. 200 sand paper and disappears, for convenience, can select until grinding wheel trace disappears
No. 200 whetslates replace sand paper, and whetslate can cooperate angle grinder to use, fast and easy, finally will be disclosed in above-described embodiment
Workpiece weld seam device for searching be fixed on weld seam domain of the existence find workpiece weld seam.
According to substrate material and weld seam material, hardness level relationship between weld seam and substrate is determined, if weld hardness is greater than
Substrate hardness, then, if dent depth becomes larger, showing that hardness test head is moved from weld seam in sliding support moving process
To substrate, it is therefore desirable to moved in the opposite direction to find an other line of demarcation and record position；If dent depth becomes
It is small, then show that hardness test head is to have shifted to weld seam from substrate, needs the glide direction for keeping hardness test head at this time, find another
Line of demarcation and record position；Weld hardness is less than the case where substrate hardness, and those skilled in the art can be according to above-mentioned original
Reason voluntarily derives.
Workpiece weld seam device for searching provided by the present invention is described in detail above.It is used herein specifically a
Principle and implementation of the present invention are described for example, and it is of the invention that the above embodiments are only used to help understand
Method and its core concept.It should be pointed out that for those skilled in the art, not departing from the principle of the invention
Under the premise of, it can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the claims in the present invention
Protection scope in.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811330136.3A CN109253936A (en) | 2018-11-09 | 2018-11-09 | A kind of workpiece weld seam device for searching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811330136.3A CN109253936A (en) | 2018-11-09 | 2018-11-09 | A kind of workpiece weld seam device for searching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109253936A true CN109253936A (en) | 2019-01-22 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811330136.3A Pending CN109253936A (en) | 2018-11-09 | 2018-11-09 | A kind of workpiece weld seam device for searching |
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