CN109719410A - TFT path thermocouple welding assembly method - Google Patents
TFT path thermocouple welding assembly method Download PDFInfo
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- CN109719410A CN109719410A CN201811618110.9A CN201811618110A CN109719410A CN 109719410 A CN109719410 A CN 109719410A CN 201811618110 A CN201811618110 A CN 201811618110A CN 109719410 A CN109719410 A CN 109719410A
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- thermocouple
- welding
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Abstract
The present invention relates to a kind of TFT path thermocouple welding assembly methods, belong to technical field of metal material.It realizes effective connection of thermocouple and channel body by techniques such as butt welding, drilling, weldering casing, patches.The problem of even head is not welded in channel body directly by the present invention, but even head is fixed on one piece of patch, patch heat is connect in channel body, and effective solution welding falls off, welding expulsion rate drop within 1% from 35%.Simultaneously by welding protection sleeve pipe on patch; effectively limit the significantly tiring exercises near even head; there is no idol heads when being fixedly connected, therefore being shaken with channel body can slide and rotate for idol head at the same time, effectively raises the fatigue life of thermo wires.
Description
Technical field
The present invention relates to a kind of TFT path thermocouple welding assembly methods, belong to technical field of metal material.
Background technique
Platinum and platinum rhodium thermocouple include S(Pt-PtRh10), R(Pt-PtRh13), B(PtRh6-PtRh30) three kinds of models,
With temperature measurement accuracy height, the clear advantages such as good in oxidation resistance.According to silk material intensity and the difference of the thermometric upper limit, platinum and platinum rhodium heat
Galvanic couple can be applied to various high-temperature measurement fields.
In the channel TFT when thermometric, due to very high to testing temperature, need to use Type B thermocouple.Type B thermocouple it is obvious bad
Gesture is that the mass fraction of its positive rhodium is higher, causes the hardness of silk material high, hardening rate is fast, therefore when silk material is thicker, just
The fatigue strength of pole is very low.Traditional handicraft be when solving the problems, such as this thermocouple is directly welded in channel matrix, but there are still
Wire broken rate is high, welds various difficulties such as easy to fall off.
Summary of the invention
The purpose of the present invention is overcoming above-mentioned shortcoming, the problem of a kind of welding of effective solution falls off is provided
TFT path thermocouple welding assembly method.
Technical solution of the present invention, TFT path thermocouple welding assembly method, steps are as follows:
(1) butt welding: carrying out butt welding for thermocouple wire positive and negative anodes, forms even head；
(2) it drills: taking platinum-rhodium alloy piece, in platinum-rhodium alloy piece center drill two holes, it is described that the diameter in the hole is greater than step (1)
The diameter of thermocouple wire；
(3) it welds casing: using the center in step (2) two hole as the center of circle, welding a platinum-rhodium alloy pipe；
(4) poling: the positive and negative anodes of step (1) described thermocouple wire are passed through into hole described in step (2), obtain patch thermocouple；
(5) the patch thermocouple that step (4) obtains patch: is attached to TFT channels base with the mode that heat connects with oxyhydrogen flame
On body.
Further, step (1) welding manner is argon arc welding or oxyhydrogen welding.
Further, step (1) thermocouple wire is one of S, R, Type B, and even mellow and full, smooth；The thermoelectricity
The diameter of thermo wires is 0.1~3.0mm, and even head outer diameter is not less than 2mm.
Further, the length of platinum-rhodium alloy piece is 30~50mm in step (2), and width is 30~50mm, with a thickness of 0.3
~0.5mm.
Further, the spacing in step (2) between two holes is 0.5 ~ 1.5mm.
Further, the diameter of the diameter in step (2) the described hole thermocouple wire more described than step (1) is 0.05~0.1mm big.
Further, the height of step (3) platinum-rhodium alloy pipe be 8~12mm, internal diameter be 8~12mm, the thickness of pipe be 0.5~
0.8mm。
Further, the mass fraction of the rhodium of step (3) the platinum-rhodium alloy pipe is specially 1%~25%, and brilliant with film
Body tube passage basis material is identical.
Further, the temperature of step (5) described oxyhydrogen flame controls between 1600~1700 DEG C.
Beneficial effects of the present invention: even head is not welded in channel body directly by the present invention, but even head is fixed on
On one piece of patch, patch heat is connect in channel body, the problem of effective solution welding falls off, welding expulsion rate is from 35%
Drop within 1%.Simultaneously by welding protection sleeve pipe on patch, the significantly fatigue fortune near even head is effectively limited
Dynamic, there is no idol heads when being fixedly connected, therefore being shaken with channel body can slide and rotate for idol head at the same time,
Effectively raise the fatigue life of thermo wires.
The present invention can be applied not only to the channel TFT, can also be applied to platinum and platinum under the premise of not considering increase cost
Other fields of rhodium thermocouple thermometric, such as the single crucible of glass fibre bushing, optical glass continuous smelting pot, synthetic cut stone.
With certain application prospect.
Specific embodiment
Embodiment 1
(1) the S type thermocouple wire positive and negative anodes that diameter is 0.5mm are carried out by butt welding by argon arc welding, forms even head, totally two pairs of thermoelectricity
It is even；
It is 300mm that even head is occasionally directly welded on outer diameter with argon arc welding by one pair of them, is managed with a thickness of the large-scale platinum rhodium 20 of 1.0mm
On material；Bending S type anode, i.e. platinum rhodium 10 are removed with Flexing Apparatus, bending angle is 60 °, measures the tired longevity with this condition
Life is 81 times；
(2) one piece is chosen with a thickness of 0.3mm, and length 30mm, width is 30mm platinum rhodium 20, between the center of the piece makes a call to two
Away from for 0.5mm, aperture is the hole of 0.53mm, and using the center in two holes as the center of circle, welding an internal diameter is 8mm, thickness of pipe 0.5mm,
The platinum rhodium 20 that height is 8mm is managed, and thermocouple is passed through two apertures；
It (3) is 300mm in outer diameter with oxyhydrogen flame heat posted by rhodium 20, platinum obtained by step (2), with a thickness of the large-scale platinum rhodium 20 of 1.0mm
On tubing；Bending S type anode, i.e. platinum rhodium 10 are removed with Flexing Apparatus, bending angle is 60 °, measures fatigue with this condition
Service life is 175 times.
Embodiment 2
(1) butt welding: carrying out butt welding for the R type thermocouple wire positive and negative anodes that diameter is 0.5mm by argon arc welding, form even head, and totally two
To thermocouple；
It is 300mm that even head is occasionally directly welded on outer diameter with argon arc welding by one pair of them, is managed with a thickness of the large-scale platinum rhodium 20 of 1.0mm
On material；Bending R type anode, i.e. platinum rhodium 13 are removed with Flexing Apparatus, bending angle is 60 °, measures the tired longevity with this condition
Life is 32 times；
(2) one piece is chosen with a thickness of 0.3mm, and length 30mm, width is 30mm platinum rhodium 20, between the center of the piece makes a call to two
Away from for 0.5mm, aperture is the hole of 0.53mm, and using the center in two holes as the center of circle, welding an internal diameter is 8mm, thickness of pipe 0.5mm,
The platinum rhodium 20 that height is 8mm is managed, and thermocouple is passed through two apertures；
It (3) is 300mm in outer diameter with oxyhydrogen flame heat posted by platinum rhodium 20, with a thickness of on large-scale 20 tubing of platinum rhodium of 1.0mm；With curved
Folding testing machine removes bending R type anode, i.e. platinum rhodium 13, and bending angle is 60 °, and the fatigue life measured with this condition is 105 times.
Embodiment 3
(1) butt welding: carrying out butt welding for the Type B thermocouple wire positive and negative anodes that diameter is 0.5mm by argon arc welding, form even head, and totally two
To thermocouple；
It is 300mm that even head is occasionally directly welded on outer diameter with argon arc welding by one pair of them, is managed with a thickness of the large-scale platinum rhodium 20 of 1.0mm
On material；Bending Type B anode, i.e. platinum rhodium 30 are removed with Flexing Apparatus, bending angle is 60 °, measures the tired longevity with this condition
Life is 10 times；
(2) one piece is chosen with a thickness of 0.3mm, and length 30mm, width is 30mm platinum rhodium 20, between the center of the piece makes a call to two
Away from for 0.5mm, aperture is the hole of 0.53mm, and using the center in two holes as the center of circle, welding an internal diameter is 8mm, thickness of pipe 0.5mm,
The platinum rhodium 20 that height is 8mm is managed, and thermocouple is passed through two apertures.
It (3) is 300mm in outer diameter with oxyhydrogen flame heat posted by platinum rhodium 20, with a thickness of on large-scale 20 tubing of platinum rhodium of 1.0mm.
Bending Type B anode, i.e. platinum rhodium 30 are removed with Flexing Apparatus, bending angle is 60 °, and the fatigue life measured with this condition is 31
It is secondary.
Embodiment 4
(1) butt welding: carrying out butt welding for the Type B thermocouple wire positive and negative anodes that diameter is 0.1mm by argon arc welding, form even head, and totally two
To thermocouple；
It is 300mm that even head is occasionally directly welded on outer diameter with argon arc welding by one pair of them, is managed with a thickness of the large-scale platinum rhodium 20 of 1.0mm
On material；Bending Type B anode, i.e. platinum rhodium 30 are removed with Flexing Apparatus, bending angle is 60 °, measures the tired longevity with this condition
Life is 30 times；
(2) one piece is chosen with a thickness of 0.3mm, and length 30mm, width is 30mm platinum rhodium 20, between the center of the piece makes a call to two
Away from for 0.5mm, aperture is the hole of 0.13mm, and using the center in two holes as the center of circle, welding an internal diameter is 8mm, thickness of pipe 0.5mm,
The platinum rhodium 20 that height is 8mm is managed, and thermocouple is passed through two apertures.
It (3) is 300mm in outer diameter with oxyhydrogen flame heat posted by platinum rhodium 20, with a thickness of on large-scale 20 tubing of platinum rhodium of 1.0mm.
Bending Type B anode, i.e. platinum rhodium 30 are removed with Flexing Apparatus, bending angle is 60 °, and the fatigue life measured with this condition is 66
It is secondary.
Embodiment 5
(1) butt welding: carrying out butt welding for the Type B thermocouple wire positive and negative anodes that diameter is 3mm by argon arc welding, forms even head, and totally two pairs
Thermocouple；
It is 300mm that even head is occasionally directly welded on outer diameter with argon arc welding by one pair of them, is managed with a thickness of the large-scale platinum rhodium 20 of 1.0mm
On material；Bending Type B anode, i.e. platinum rhodium 30 are removed with Flexing Apparatus, bending angle is 60 °, measures the tired longevity with this condition
Life is 3 times；
(2) one piece is chosen with a thickness of 0.5mm, and length 50mm, width is 50mm platinum rhodium 20, between the center of the piece makes a call to two
Away from for 1.5mm, aperture is the hole of 3.3mm, and using the center in two holes as the center of circle, welding an internal diameter is 12mm, thickness of pipe 0.8mm,
The platinum rhodium 20 that height is 12mm is managed, and thermocouple is passed through two apertures.
It (3) is 300mm in outer diameter with oxyhydrogen flame heat posted by platinum rhodium 20, with a thickness of on large-scale 20 tubing of platinum rhodium of 1.0mm.
Bending Type B anode, i.e. platinum rhodium 30 are removed with Flexing Apparatus, bending angle is 60 °, and the fatigue life measured with this condition is 6
It is secondary；
Embodiment 6
(1) butt welding: carrying out butt welding for the Type B thermocouple wire positive and negative anodes that diameter is 1.0mm by argon arc welding, form even head, and totally two
To thermocouple；
It is 300mm that even head is occasionally directly welded on outer diameter with argon arc welding by one pair of them, is managed with a thickness of the large-scale platinum rhodium 25 of 1.0mm
On material；Bending Type B anode, i.e. platinum rhodium 30 are removed with Flexing Apparatus, bending angle is 60 °, measures the tired longevity with this condition
Life is 7 times；
(2) one piece is chosen with a thickness of 0.5mm, and length 50mm, width is 50mm platinum rhodium 25, between the center of the piece makes a call to two
Away from for 1.0mm, aperture is the hole of 1.3mm, and using the center in two holes as the center of circle, welding an internal diameter is 12mm, thickness of pipe 0.8mm,
The platinum rhodium 25 that height is 12mm is managed, and thermocouple is passed through two apertures.
It (3) is 300mm in outer diameter with oxyhydrogen flame heat posted by platinum rhodium 25, with a thickness of on large-scale 25 tubing of platinum rhodium of 1.0mm.
Bending Type B anode, i.e. platinum rhodium 30 are removed with Flexing Apparatus, bending angle is 60 °, and the fatigue life measured with this condition is 16
It is secondary；
Embodiment 7
(1) butt welding: carrying out butt welding for the Type B thermocouple wire positive and negative anodes that diameter is 1.0mm by argon arc welding, form even head, and totally two
To thermocouple；
It is 300mm that even head is occasionally directly welded on outer diameter with argon arc welding by one pair of them, is managed with a thickness of the large-scale platinum rhodium 1 of 1.0mm
On material；Bending Type B anode, i.e. platinum rhodium 30 are removed with Flexing Apparatus, bending angle is 60 °, measures the tired longevity with this condition
Life is 7 times；
(2) one piece is chosen with a thickness of 0.5mm, and length 50mm, width is 50mm platinum rhodium 1, between the center of the piece makes a call to two
Away from for 1.0mm, aperture is the hole of 1.3mm, and using the center in two holes as the center of circle, welding an internal diameter is 12mm, thickness of pipe 0.8mm,
The platinum rhodium 1 that height is 12mm is managed, and thermocouple is passed through two apertures.
It (3) is 300mm in outer diameter with oxyhydrogen flame heat posted by platinum rhodium 1, with a thickness of on large-scale 1 tubing of platinum rhodium of 1.0mm.With
Flexing Apparatus removes bending Type B anode, i.e. platinum rhodium 30, and bending angle is 60 °, and the fatigue life measured with this condition is 17
It is secondary.
Embodiment 8
(1) butt welding: the Type B thermocouple wire positive and negative anodes that diameter is 0.5mm are carried out by butt welding by oxyhydrogen welding, form even head, altogether
Two pairs of thermocouples；
It is 300mm that even head is occasionally directly welded on outer diameter with argon arc welding by one pair of them, is managed with a thickness of the large-scale platinum rhodium 20 of 1.0mm
On material；Bending Type B anode, i.e. platinum rhodium 30 are removed with Flexing Apparatus, bending angle is 60 °, measures the tired longevity with this condition
Life is 9 times；
(2) one piece is chosen with a thickness of 0.3mm, and length 30mm, width is 30mm platinum rhodium 20, between the center of the piece makes a call to two
Away from for 0.5mm, aperture is the hole of 0.53mm, and using the center in two holes as the center of circle, welding an internal diameter is 8mm, thickness of pipe 0.5mm,
The platinum rhodium 20 that height is 8mm is managed, and thermocouple is passed through two apertures.
It (3) is 300mm in outer diameter with oxyhydrogen flame heat posted by platinum rhodium 20, with a thickness of on large-scale 20 tubing of platinum rhodium of 1.0mm.
Bending Type B anode, i.e. platinum rhodium 30 are removed with Flexing Apparatus, bending angle is 60 °, and the fatigue life measured with this condition is 22
It is secondary.
Claims (9)
1.TFT path thermocouple welding assembly method, it is characterized in that steps are as follows:
(1) butt welding: carrying out butt welding for thermocouple wire positive and negative anodes, forms even head；
(2) it drills: taking platinum-rhodium alloy piece, in platinum-rhodium alloy piece center drill two holes, it is described that the diameter in the hole is greater than step (1)
The diameter of thermocouple wire；
(3) it welds casing: using the center in step (2) two hole as the center of circle, welding a platinum-rhodium alloy pipe；
(4) poling: the positive and negative anodes of step (1) described thermocouple wire are passed through into hole described in step (2), obtain patch thermocouple；
(5) the patch thermocouple that step (4) obtains patch: is attached to TFT channels base with the mode that heat connects with oxyhydrogen flame
On body.
2. TFT path thermocouple welding assembly method as described in claim 1, it is characterized in that: step (1) described welding manner is
Argon arc welding or oxyhydrogen welding.
3. TFT path thermocouple welding assembly method as described in claim 1, it is characterized in that: step (1) described thermocouple wire is
S, one of R, Type B, even mellow and full, smooth；The diameter of the thermocouple wire is 0.1~3.0mm, and even head outer diameter is not less than
2mm。
4. TFT path thermocouple welding assembly method as described in claim 1, it is characterized in that: platinum-rhodium alloy piece in step (2)
Length is 30~50mm, and width is 30~50mm, with a thickness of 0.3~0.5mm.
5. TFT path thermocouple welding assembly method as described in claim 1, it is characterized in that: in step (2) between two holes between
Away from for 0.5 ~ 1.5mm.
6. TFT path thermocouple welding assembly method as described in claim 1, it is characterized in that: the diameter ratio in step (2) described hole
Big 0.05~the 0.1mm of diameter of step (1) described thermocouple wire.
7. TFT path thermocouple welding assembly method as described in claim 1, it is characterized in that: the height of step (3) platinum-rhodium alloy pipe
Degree is 8~12mm, and internal diameter is 8~12mm, and the thickness of pipe is 0.5~0.8mm.
8. TFT path thermocouple welding assembly method as described in claim 1, it is characterized in that: step (3) the platinum-rhodium alloy pipe
The mass fraction of rhodium be specially 1%~25%, and it is identical as TFT channels basis material.
9. TFT path thermocouple welding assembly method as described in claim 1, it is characterized in that: the temperature of step (5) described oxyhydrogen flame
Degree control is between 1600~1700 DEG C.
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Application publication date: 20190507 |