CN204203141U - A kind of device measuring Plate Welding thermal cycling temperature curve - Google Patents
A kind of device measuring Plate Welding thermal cycling temperature curve Download PDFInfo
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- CN204203141U CN204203141U CN201420591041.8U CN201420591041U CN204203141U CN 204203141 U CN204203141 U CN 204203141U CN 201420591041 U CN201420591041 U CN 201420591041U CN 204203141 U CN204203141 U CN 204203141U
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Abstract
The utility model discloses a kind of device measuring Plate Welding thermal cycling temperature curve, belongs to material engineering field.This device is made up of a clapboard and a run-on tab, and described clapboard has the face of weld and measuring surface that intersect by certain angle; Described run-on tab is rectangular parallelepiped, the thickness of run-on tab and clapboard consistency of thickness; Along run-on tab length direction, the end face of run-on tab and the face of weld of clapboard are closely conjointly fixed in same level, and the measuring surface of clapboard is positioned at the below of face of weld.This apparatus structure is simple and easy to processing, can fast, accurately, reliably measure the device of Plate Welding thermal cycling curve, and the formulation for welding condition provides important foundation.
Description
Technical field
The utility model discloses a kind of device measuring Plate Welding thermal cycling temperature curve, belong to material engineering field, relate to the Thermal Cycle determinator of metal material.
Background technology
Welding is local melting by junction or phase counterdiffusion, simple parts is spliced into a kind of manufacturing process of complex parts or component.In welding process, fusing is become weld seam by the position being in electric arc thermal source central area, and from the position away from arcing distance in welding joint, although be solid-state always, but still be subject to the impact of sweating heat and form heat-affected zone, and different parts is according to different from electric arc thermal source centre distance distance.In welding joint, be subject to welding heat affected mother metal and all have intensification and cooling two processes, and heating rate is high, cooling velocity fast, form a kind of special Thermal Cycling differed widely with common heat treatment, this special Thermal Cycling is described by welding thermal cycle curve.In welding process, Thermal Cycle directly has influence on the comprehensive mechanical property of welding joint, so welding thermal cycle curve formulates the key reference foundation of rational welding technology.
Because Thermal Cycle process has heating and cooling time short, the singularity such as peak temperature is high, the method measuring welding thermal cycle curve at present is both at home and abroad less: one is contactless thermal imagery method, and another kind is that thermopair flush type is measured.But above two kinds of methods all exist a lot of problem: measuring equipment needed for contactless thermal imagery method is expensive, simultaneously because image taking speed cannot meet the rate temperature change of Thermal Cycle, its test result and actual welding thermal cycle often have huge difference.And traditional thermocouple method needs buried for the thermopair inside in test piece for welding, need to carry out repeatedly Drilling operation, operability is poor and workload is huge, and because thermopair engages with test plate (panel), situation cannot be observed, test zone measuring position is difficult to shortcomings such as controlling, cause measurement success ratio very low, and test error is comparatively large, the thermopair used in process of the test is platinum-rhodium alloy material, and testing expenses are expensive.Such as, Chinese Patent Application No. 200810041083.3 discloses " a kind of method of testing of thermal circulation parameters of laser welding and device thereof ", a wedge-shaped bar is placed between two block welding test plate (panel)s, the end face of the test piece for welding corresponding with wedge-shaped bar inclined-plane is as thermometric face, along the uniform some through holes for placing thermopair of this test piece for welding end face, and relative set thermopair, adopt the method implanting thermopair to record Thermal Cycle process; At " heat processing technique " " the 35th interim employing local of volume the 7th was adopted and was a little measured Welding Heat Cycle of Thin-wall Plate 2006 years; 60mm super-thick steel plate double V-groove Thermal Cycle is measured at " University Of Science and Technology of the Inner Mongol's journal " interim employing thermopair flush type of the 28th volume the 1st in 2009.Above document all adopts thermopair flush type to carry out the mensuration of Thermal Cycle, and need to hole onboard, workload is huge and loaded down with trivial details.
Summary of the invention
The purpose of this utility model is to provide a kind of structure and is simple and easy to processing, can fast, accurately, reliably measure the device of Plate Welding thermal cycling curve, and the formulation for welding condition provides important foundation.
The utility model specifically adopts following technical scheme:
For measuring a device for Plate Welding thermal cycling curve, it is characterized in that being made up of a clapboard and a run-on tab, described clapboard has the face of weld and measuring surface that intersect by certain angle; Described run-on tab is rectangular parallelepiped, the thickness of run-on tab and clapboard consistency of thickness; Along run-on tab length direction, the end face of run-on tab and the face of weld of clapboard are closely conjointly fixed in same level, and the measuring surface of clapboard is positioned at the below of face of weld.
Wherein, clapboard angle
abe 5 ~ 45 °, clapboard hypotenuse length
lbe 100 ~ 800mm, clapboard height
h>=50mm, clapboard thickness
d>=30mm; Run-on tab length
l>=50mm, run-on tab height
h>=50mm.
In said apparatus the Application Range of important parameter and reason as follows:
(1) clapboard and run-on tab dimensions
In the utility model, clapboard length and height dimension have influence on welding heat affected zone thermal cycle test specification, will reserve sufficient breath arc region, so clapboard hypotenuse length simultaneously
lbe 100 ~ 800mm, clapboard height
h(face of weld terminal is to the distance of hypotenuse)>=50mm.Less clapboard angle is conducive to test accuracy, but too small clapboard angle causes test plate (panel) oversize, is unfavorable for test operation, so clapboard angle
ait is 5 ~ 45 °.For ensureing the motion of welding arc and the flowing of weld metal, weldering clapboard thickness
d>=30mm.
(2) clapboard and run-on tab surfaceness
The roughness of clapboard measuring surface has influence on combining closely thus having influence on thermometric accuracy of thermocouple wire and measuring surface, so the surface roughness requirements of measuring surface is Ra3.2 and following.The degree of roughness of clapboard and run-on tab face of weld has influence on the stability of electric arc, so its surface roughness requirements is Ra25 and following.
(3) spacing is measured
Measure spacing and will have influence on accuracy of measurement, the too intensive meeting in measuring position has influence on the accuracy of measurement result, so measuring position interval >=0.5mm.Should arrange test position according to the dimensions of wedge shape test block and test request, test position is tightr, and the thermal cycling curve of welding heat affected zone is more detailed simultaneously.
The utility model tool has the following advantages:
1, the utility model structure is simple and easy to processing, can measuring the welding thermal cycle curve of steel plate quickly and accurately, providing important evidence for formulating scientific and reasonable welding technology.
2, experiment material needed for the utility model and testing equipment less, low cost, the process utilizing this device to carry out testing is comparatively simple, and success of the test rate is high, and operability is stronger.
3, the utility model has wider applicability, can measure the actual welding thermal cycling curve of the welding method lower steel plates such as GMAW, GTAW, SMAW.
Accompanying drawing explanation
Wedged plate structure schematic diagram involved by Fig. 1 the utility model;
Run-on tab structural representation involved by Fig. 2 the utility model;
Measuring position schematic diagram involved by Fig. 3 the utility model;
Clapboard involved by Fig. 4 the utility model and run-on tab are assembled and direction of welding schematic diagram;
The welding heat affected zone curve map of Fig. 5 the utility model one embodiment.
Embodiment
Below in conjunction with specific embodiment, the utility model is further detailed.
As Figure 1-Figure 4, the device of mensuration Plate Welding thermal cycling curve of the present utility model is made up of clapboard 1 and run-on tab 2, and clapboard 1 has angularly
athe face of weld 1-1 intersected and measuring surface 1-2, face of weld 1-1 and measuring surface 1-2 are rectangle.Run-on tab 2 is the thickness of rectangular parallelepiped, run-on tab 2
dwith the thickness of clapboard 1
dunanimously.Along run-on tab length direction, the end face 2-1 of the run-on tab 2 and face of weld 1-1 of clapboard 1 is closely conjointly fixed in same level, and the measuring surface 1-2 of clapboard is positioned at the below of face of weld 1-1.Clapboard 1 angle
abe 5 ~ 45 °, clapboard 1 hypotenuse length
lbe 100 ~ 800mm, clapboard 1 height
h>=50mm, clapboard 1 thickness
d>=30mm; Run-on tab 2 length
l>=50mm, run-on tab 2 height
h>=50mm.Measuring surface 2 is provided with the multiple measuring positions for pasting thermocouple wire measuring junction.Measuring position interval >=0.5mm.The measuring surface roughness of clapboard is Ra3.2 and following, and the face of weld of clapboard and the end face roughness of run-on tab are Ra25 and following.
Be determined as example to carry out welding thermal cycle curve to yield strength 890MPa high-strength steel Q890 below, application of the present utility model is described.
(1) device preparation, as shown in Figure 4, device is made up of clapboard 1 and run-on tab 2.Steel plate to be measured is used to make clapboard 1 by Fig. 1, the clapboard angle formed between face of weld 1-1 and measuring surface 1-2
ait is 15 °; Hypotenuse length
l(i.e. the length of measuring surface 2) is 400mm, clapboard thickness
d(i.e. the width of face of weld) is 40mm; Make run-on tab by Fig. 2, run-on tab is rectangular parallelepiped, and wherein one side 2-1 is used for welding, run-on tab length
l(namely for welding the length of one side) is 100mm, highly
hfor 100mm, thickness
d(namely for welding the width of one side) is 40mm, equal with clapboard thickness.Clapboard measuring surface roughness is Ra3.2, and the face of weld roughness of clapboard and run-on tab is Ra12.5.
(2) thermocouple wire is connected: select diameter to be that 0.3mm thermocouple wire carries out temperature measuring, with thermopair welding machine by welded together for the measuring junction of thermocouple wire, and use the high temperature glue of resistance to 1400 DEG C thermocouple wire measuring junction to be firmly pasted on respectively measuring position A ~ D that distance face of weld vertical range is 0.5mm, 1.0mm, 1.5mm and 2.0mm, as shown in Figure 3.
(3) run-on tab and clapboard is assembled: according to shown in Fig. 4, run-on tab and clapboard are carried out gapless assembling, namely along run-on tab length direction, closely conjointly be fixed in same level by the face of weld of the end face of run-on tab and clapboard, the measuring surface of clapboard is positioned at the below of face of weld; And carry out electric welding in package assembly both sides and fix.
(4) welding heat affected zone temperature measuring: use GMAW welding method, direction to clapboard from run-on tab is welded, the top of run-on tab end face is starting the arc end, the terminal of clapboard face of weld is breath arc end, welding condition is: welding current 270A, weldingvoltage 27V, speed of welding 36cm/min, use flame gun preheating 60 DEG C before weldering.FK-1000 selected by welding material, and diameter is Φ 1.2mm, and blanket gas selects composition to be 80%Ar and 20%CO
2mixed gas.
(5) draw welding thermal cycle curve: the Time-temperature data measured according to registering instrument, draw different welding heat affected zones welding thermal cycle curve.The welding heat affected zone curve of final acquisition is shown in Fig. 5.
As seen from the above, the device utilizing the utility model to provide can well measure the GMAW welding thermal cycle curve of Q890 high strength steel plate 12kJ/cm, method of testing simple and fast, has good using value, can provide reliable foundation for the formulation of welding condition.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (5)
1. for measuring a device for Plate Welding thermal cycling curve, it is characterized in that being made up of a clapboard and a run-on tab, described clapboard has the face of weld and measuring surface that intersect by certain angle; Described run-on tab is rectangular parallelepiped, the thickness of run-on tab and clapboard consistency of thickness; Along run-on tab length direction, the end face of run-on tab and the face of weld of clapboard are closely conjointly fixed in same level, and the measuring surface of clapboard is positioned at the below of face of weld.
2. as claimed in claim 1 for measuring the device of Plate Welding thermal cycling curve, it is characterized in that clapboard angle
abe 5 ~ 45 °, clapboard hypotenuse length
lbe 100 ~ 800mm, clapboard height
h>=50mm, clapboard thickness
d>=30mm; Run-on tab length
l>=50mm, run-on tab height
h>=50mm.
3. as claimed in claim 1 for measuring the device of Plate Welding thermal cycling curve, it is characterized in that described measuring surface is provided with the multiple measuring positions for pasting thermocouple wire measuring junction.
4. as claimed in claim 3 for measuring the device of Plate Welding thermal cycling curve, it is characterized in that measuring position interval >=0.5mm.
5. as claimed in claim 1 for measuring the device of Plate Welding thermal cycling curve, it is characterized in that: the measuring surface roughness of clapboard is Ra3.2 and following, the face of weld of clapboard and the end face roughness of run-on tab are Ra25 and following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420591041.8U CN204203141U (en) | 2014-10-13 | 2014-10-13 | A kind of device measuring Plate Welding thermal cycling temperature curve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420591041.8U CN204203141U (en) | 2014-10-13 | 2014-10-13 | A kind of device measuring Plate Welding thermal cycling temperature curve |
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| CN204203141U true CN204203141U (en) | 2015-03-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267061A (en) * | 2014-10-13 | 2015-01-07 | 南京钢铁股份有限公司 | Method and device for measuring weld thermal cycle temperature curve of steel plate |
| CN110398511A (en) * | 2019-08-02 | 2019-11-01 | 肖薇薇 | A kind of welding thermal cycle curve analyzer |
-
2014
- 2014-10-13 CN CN201420591041.8U patent/CN204203141U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267061A (en) * | 2014-10-13 | 2015-01-07 | 南京钢铁股份有限公司 | Method and device for measuring weld thermal cycle temperature curve of steel plate |
| CN104267061B (en) * | 2014-10-13 | 2017-01-25 | 南京钢铁股份有限公司 | Method and device for measuring weld thermal cycle temperature curve of steel plate |
| CN110398511A (en) * | 2019-08-02 | 2019-11-01 | 肖薇薇 | A kind of welding thermal cycle curve analyzer |
| CN110398511B (en) * | 2019-08-02 | 2022-11-04 | 徐州创之社通用技术产业研究院有限公司 | Welding thermal cycle curve tester |
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