Temporary frame wire grid type high-temperature strain gauge and manufacturing and using method thereof

A technology of high temperature strain and manufacturing method, applied in the direction of electric/magnetic solid deformation measurement, electromagnetic measurement device, etc., can solve the problem that no one has set foot in

Inactive Publication Date: 2018-12-21
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional foil-type high-temperature strain gauges with substrates generally can only work in an environment below 350 °C, which is

Method used

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  • Temporary frame wire grid type high-temperature strain gauge and manufacturing and using method thereof

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Embodiment Construction

[0035] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0036] The invention provides a wire grid type high-temperature strain gauge with a temporary frame and a manufacturing and using method thereof.

[0037] Such as figure 1 As shown, the temporary frame wire grid high-temperature strain gauge includes sensitive grid wire 1, lead wire 2, temporary frame 3, and solder joint 4, wherein the sensitive grid wire 1 is fixed on the temporary frame 3 by glue, and the connection between the sensitive grid wire 1 and the lead wire 2 is The solder joints 4 formed by electric welding are connected.

[0038] The manufacturing process of the temporary frame wire grid type high temperature strain gauge is as follows:

[0039] a. Manufacture of grid wire: the metal alloy wire is drawn and annealed several times to make ...

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Abstract

The invention provides a temporary frame wire grid type high-temperature strain gauge and a manufacturing and using method thereof, and relates to the technical field of high-temperature strain testing. The temporary frame wire grid type high-temperature strain gauge comprises sensitive wire grid, lead wires, a temporary frame and welding spots. Wire materials are convoluted and wound into the shape of the sensitive wire grid through winding equipment; the sensitive wire grid and the lead wires are fused and tightly connected through resistance welding; and the sensitive wire grid and the leadwires are fixed on the temporary frame through nitrocellulose glue to form the temporary frame wire grid type high-temperature strain gauge. The high-temperature strain gauge is fixed on the surfaceof a tested piece through surface cleaning during using, primer or coating and curing, primary capping or coating and curing, integral capping or coating and curing. According to the temporary frame wire grid type high-temperature strain gauge and the manufacturing method thereof, resistance values are adjustable, the resistance dispersibility is less than +/-1 omega, and requirements of high-temperature strain measurement of room temperature at -1000 DEG C for a long time and 1000-1200 DEG C for a short time can be met.

Description

technical field [0001] The invention relates to the technical field of high-temperature strain testing, in particular to a temporary frame wire grid type high-temperature strain gauge and a method for manufacturing and using the same. Background technique [0002] The contact high-temperature strain measurement method based on the principle of strain electrical measurement has high reliability, good adaptability, and simple principle, and has always been the main method of high-temperature strain measurement. As a measurement sensitive element, the high temperature strain gauge plays an important role in converting the measured strain signal into an electrical signal, and is the core element in the measurement system. With the rapid development of aerospace, energy, military and other industries, the service environment of its key components is becoming more and more harsh. Accurate measurement of stress and strain in high temperature environments is crucial for material sel...

Claims

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Application Information

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IPC IPC(8): G01B7/16
CPCG01B7/16
Inventor 王文瑞张佳明
Owner UNIV OF SCI & TECH BEIJING
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