CN85104178A - A kind of high temperature grid base bended strain ga(u)ge and using method thereof - Google Patents
A kind of high temperature grid base bended strain ga(u)ge and using method thereof Download PDFInfo
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- CN85104178A CN85104178A CN 85104178 CN85104178A CN85104178A CN 85104178 A CN85104178 A CN 85104178A CN 85104178 CN85104178 CN 85104178 CN 85104178 A CN85104178 A CN 85104178A CN 85104178 A CN85104178 A CN 85104178A
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- strainometer
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Abstract
A kind of high temperature grid base bended strain ga(u)ge, its substrate is the alloy Gate lattice structure, strain wire grid small part is bonded on the grid base, and major part is exposed in the air, thereby has solved the low major defect that maybe can not carry out pyroprocessing and quality sorting of general high temperature strain gauge crooking ability.A kind of method and a kind of thermopair of measuring this strainometer temperature of this strainometer of installation of uniqueness are provided.
Description
The invention belongs to hot strength detecting element and method of testing.
Multiple high temperature strain gauge and using method thereof have been arranged,, described a kind of method of testing that adopts miniature high temperature free grid strainometer in 174 for example in U.S. Pat 4,115.The user must adopt special support chip and certain operation steps that interim base is removed from strainometer, then the strain wire grid is cleaned, and with pottery glue it is directly sticked on the measured point of member or test specimen.Whole process is very time-consuming, easy breakdown strain wire grid, and simultaneously, because the interim base of the strainometer that it adopts is plastics, heat resistance is poor, thereby makes this strainometer can not carry out pyroprocessing and thermal output sorting, causes serious measuring error.
The purpose of this invention is to provide a kind of strainometer of under the condition of high temperature, measuring member or test piece deformation, can carry out pyroprocessing and thermal output sorting before use, need not remove substrate in use.The using method of this strainometer is provided simultaneously.
Another object of the present invention provides a kind of when using this strainometer, measures the temperature element and the using method of strainometer temperature.
Figure one is a high temperature grid base bended strain ga(u)ge configuration diagram.1 is grizzly bar among the figure, the 2nd, and grid base, the 3rd, pinout connector reinforcing band, the 4th, strain wire grid, the 5th, extension line, the 6th, pottery glue.
Figure two is reticulated film thermocouple structure and installation diagrammatic sketch, and 7 is heat transfer meshes among the figure, and 8 and 9 is two thermocouple material lines, the 10th, and measured body, the 11st, welding bar.
Main points of the present invention are that the substrate of high temperature strain gauge is the grid base of being made by Alloy Foil, and there is the grizzly bar that supports strain silk and lead-out wire the centre. The grid base bending is subjected to the constraint of glue little freely. Can be made into grid around the grid base, good to guarantee stickup. The strain wire grid is adhesive in grid by pottery On the bar, major part is exposed in the air, so as crooked, tight by pottery glue-line parcel after pasting, be combined firmly with test specimen. Grid base can be used Fe-C
r-Al Alloy Foil adopts the photoetching electrolytic etching to be processed into. The strain wire grid can be used Fe-C
r-Al alloy wire adopts automatically or the semiautomatic winding machine coiling forms. Can weld a strip reinforcing band on the base of pinout connector both sides, it is pressed in above the lead-out wire insulating barrier across lead-out wire, thereby makes joint that the protection of reinforcement be arranged. Therefore lead-in wire firmly. Reinforcing band can be with making with the same material of grid base.
When using strain gauge of the present invention, can follow following method, grizzly bar and lead district at the strain gauge back side are coated with last layer pottery glue, air dry is aimed at measuring point with the back side after 1 hour and is sticked in air, and be positioned on the test specimen (be nonmetal or can not welding metal material such as test specimen, then use anchor clamps and be pressed on the test specimen around the strain gauge) with mash welder welding around the grid base; Pottery glue is immersed between grid and the strain wire grid, and cladding thickness exceeds grid base; Vibrate gently test specimen, in order to eliminate as far as possible the gap, make pottery glue be full of densely space between strain wire grid and the testee; Treatment process requirement by pottery glue is cured processing.
When using the present invention to carry out high temperature strain measurement, need carry out the temperature test of strainometer, at this moment, can adopt a kind of novel reticulated film thermopair, its gauge head is made of heat transfer meshes and two thermocouple materials.Heat transfer meshes can be made with Heat Conduction Material, and employing and the same made of strain wire grid are preferred version.The length and width size of heat transfer meshes can be roughly the same with strain wire grid size, and thickness can be between 0.04～0.06mm.Two thermocouple material lines are welded on the both sides of heat transfer meshes respectively.Thermocouple material can be selected Ni-C for use
rAlloy and N
i-S
iAlloy.Can carry out as follows during use, it be connect bar with 2 root beads be pressed on the measured point that scribbles pottery glue, the two-end-point of welding bar is welded on the testee surface; Cover with pottery glue.Adopt above-mentioned thermocouple temperature measurement and since its reflection be with the temperature-averaging value on the same area of strainometer, thereby reduced measuring error.
The present invention compared with the prior art, because substrate becomes lattice-shaped, crooking ability is strong, be subjected to the constraint of glue little, thereby can be installed on the structure and test specimen of small size deep camber, its reinfocing effect is minimum, and it is low to have overcome the tubular type (as the SG series of products of U.S. Eaton company) of selling on the market and grid base formula strainometer (as the KH series of products of Japanese Kgowa company) size macrobending ability, reinfocing effect is big, can not be installed in the member of small size and deep camber or the major defect on the test specimen.Because grid base of the present invention is the permanent ingredient of strainometer, high temperature resistant, anti-oxidant (can reach 800 ℃) makes its strainometer before installation, can carry out various thermal treatments and quality sorting again.Overcome the major defect that interim basic strainometer can not carry out pyroprocessing and quality sorting.Grid base after the installation is not removed, and has avoided removing the sleave that base causes.In addition, the strain wire grid major part of this strainometer is directly to stick on the place, measured point, combines firmly with testee, has overcome the shortcoming that present grid base formula strainometer substrate back is difficult for pasting the jail.Because this strainometer is provided with reinforcing band, overcome the shortcoming that general adhesive type high temperature strain gauge lead-in wire very easily breaks away from again.The present invention is rational in infrastructure, wide accommodation, and available 750 ℃, reach as high as 800 ℃, minimum profile curvature radius can reach the structural member of 8mm and the hot strength of test specimen detects.Easy to use, the measuring accuracy height.
Claims (10)
1, a kind of high temperature strain gauge, it is made up of substrate, strain wire grid (4) and extension line (5), it is characterized in that substrate makes grid base (2) by Alloy Foil, there is the grizzly bar (1) of some support strain wire grids and extension line the centre, the strain wire grid glue (6) of being made pottery is bonded on the grizzly bar, and major part is exposed in the air.
2, as the described strainometer of claim 1., it is characterized in that grid base around become grid.
3, as claim 1,2. described strainometer, it is characterized in that there is a reinforcing band (3) joint of extension line, it be a root bead be connected on the grid base and with the prolate band of extension line insulation.The material that the manufacturing reinforcing band is used is identical with the material of grid base.
4, as claim 1,2 described strainometers, it is characterized in that grid base Fe-Cr-Al Alloy Foil, adopt the photoetching electrolytic corrosion to be processed into.The strain wire grid is the Fe-Cr-Al alloy.
5, as the described strainometer of claim 3., it is characterized in that grid base Fe-Cr-Al Alloy Foil, adopt the photoetching electrolytic corrosion to be processed into.The strain wire grid is the Fe-Cr-Al alloy.Reinforcing band is made with the Fe-Cr-Al alloy.
6, a kind of method of using aforementioned high temperature strain gauge is characterized in that:
(a) grizzly bar at the strainometer back side and lead district, are positioned on the testee with spot welding around the grid base on the measured point with the pottery glue, be can not welding metal material or nonmetallic materials as testee, then with anchor clamps strainometer are fixed on the measured point and locate.
(b) pottery glue is immersed between grid base and the strain wire grid, covering exceeds grid base, vibrates test specimen gently, makes it closely knit.
(c) the treatment process requirement by pottery glue is cured processing.
7, the thermopair of the aforementioned high temperature strain gauge temperature of a kind of special measurement, it is to be made of thermocouple material line (8) (9), and the gauge head that it is characterized in that thermopair is the heat transfer meshes (7) of book membrane type, and two thermocouple material lines are welded on the both sides of heat transfer meshes respectively.
8, as the described thermopair of claim 7., it is characterized in that the length and width size of heat transfer meshes and strain wire grid size are roughly the same, thick about 0.04～0.06mm uses and the same material of strain wire grid is made.
9, as claim 7,8. described thermopair, it is characterized in that the thermocouple material line is N
i-Cr alloy and Ni-Si alloy.
10, use claim 7, the 8. method of described thermopair, it is characterized in that:
(a) welding bar (11) is pressed in thermopair on the measured point that scribbles pottery glue, and welding bar two-end-point is welded on the surface of testee.
(b) cover pottery glue.
(c) solidify processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85104178 CN85104178A (en) | 1985-09-28 | 1985-09-28 | A kind of high temperature grid base bended strain ga(u)ge and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85104178 CN85104178A (en) | 1985-09-28 | 1985-09-28 | A kind of high temperature grid base bended strain ga(u)ge and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN85104178A true CN85104178A (en) | 1987-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 85104178 Pending CN85104178A (en) | 1985-09-28 | 1985-09-28 | A kind of high temperature grid base bended strain ga(u)ge and using method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134417A (en) * | 2011-11-24 | 2013-06-05 | 中国航空工业集团公司沈阳发动机设计研究所 | High-temperature dynamic strain meter |
| CN103615967A (en) * | 2013-11-30 | 2014-03-05 | 中航电测仪器股份有限公司 | High-temperature foil strain gauge and method for manufacturing high-temperature foil strain gauge |
| CN103900460A (en) * | 2012-12-28 | 2014-07-02 | 华东理工大学 | Semiconductor film high-temperature deformation sensor |
| CN109059747A (en) * | 2018-07-04 | 2018-12-21 | 北京科技大学 | A kind of temporary frame work wire grid formula high temperature strain gauge and its manufacture and use method |
| JP7380981B2 (en) | 2019-06-27 | 2023-11-15 | ニデックドライブテクノロジー株式会社 | Torque detection sensor and power transmission device |
-
1985
- 1985-09-28 CN CN 85104178 patent/CN85104178A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134417A (en) * | 2011-11-24 | 2013-06-05 | 中国航空工业集团公司沈阳发动机设计研究所 | High-temperature dynamic strain meter |
| CN103900460A (en) * | 2012-12-28 | 2014-07-02 | 华东理工大学 | Semiconductor film high-temperature deformation sensor |
| CN103615967A (en) * | 2013-11-30 | 2014-03-05 | 中航电测仪器股份有限公司 | High-temperature foil strain gauge and method for manufacturing high-temperature foil strain gauge |
| CN103615967B (en) * | 2013-11-30 | 2016-09-21 | 中航电测仪器股份有限公司 | A kind of high temperature foil strain gauge and manufacture method thereof |
| CN109059747A (en) * | 2018-07-04 | 2018-12-21 | 北京科技大学 | A kind of temporary frame work wire grid formula high temperature strain gauge and its manufacture and use method |
| JP7380981B2 (en) | 2019-06-27 | 2023-11-15 | ニデックドライブテクノロジー株式会社 | Torque detection sensor and power transmission device |
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