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Copper-nickel system precision resistor alloy foil and preparation method thereof

A technology of precision resistance and alloy foil, which is applied in the fields of copper-nickel series precision resistance alloy foil and its preparation, sensitive grid of bridge fatigue life meter, precision resistance alloy foil and its preparation, to reduce production cost and lower resistance cumulative strain threshold , Improve the effect of heat resistance

Inactive Publication Date: 2011-08-24
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the application research of fatigue life meter in the field of civil engineering is still in its infancy, and most of the work focuses on the resistance change performance test of the existing fatigue life meter and the research on the method of characterizing structural fatigue accumulation with resistance change characteristics.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Take a copper-nickel series precision resistance alloy casting ingot with a component distribution ratio of 43% Ni, 1.8% Mn, 0.1% Fe, 0.3% Si, and the balance is Cu, heat it to 1100°C, keep it warm for 3.5 hours, cool with the furnace, and carry out uniform After chemical treatment, the ingot is heated to 1000-1005°C, and hot-forged on a 2-roll mill to form a 25×80mm ingot; each surface of the obtained ingot is milled, and the milling thickness is 2.5-5mm / side ; Then, heat the milled ingot to 1100°C, and hot-roll it to a slab with a thickness of 2-3mm; the rolling process is: the starting rolling temperature is 1030°C; the final rolling temperature is 800°C; the pass deformation is 65 ~70%; after pickling the hot-rolled slab for 20 minutes, wash it with cold water and hot water in turn, and then use compressed air to dry it to remove the surface scale; put the pickled slab on 2 rolls at room temperature Rough rolling on the rolling mill into a slab with a thickness of 1...

Embodiment 2

[0051] Take a copper-nickel series precision resistance alloy casting ingot with a component distribution ratio of Ni 40%, Mn 1.4%, Fe 0.3%, Si 0.3%, and the balance is Cu, heat it to 1050°C, keep it warm for 3 hours, cool with the furnace, and carry out uniform After chemical treatment, the ingot is heated to 1020-1025°C, and hot-forged on a 2-roll mill to form a 20×70mm ingot; each surface of the obtained ingot is milled, and the milling thickness is 2.5-5mm / side ; Then, heat the milled ingot to 1050°C, and hot-roll it to a slab with a thickness of 2-3 mm; the rolling process is: the starting rolling temperature is 1020°C; the final rolling temperature is 750°C; the pass deformation is 75 ~80%; After pickling the hot-rolled slab for 30 minutes, wash it with cold water and hot water in turn, and then use compressed air to dry it to remove the surface scale; pickle the slab, and put it on 2 rolls at room temperature Rough rolling on the rolling mill to form a slab with a thick...

Embodiment 3

[0063] Take a copper-nickel series precision resistance alloy ingot with a component distribution ratio of Ni 48%, Mn 1.7%, Fe 0.2%, Si 0.3%, and the balance is Cu, heat it to 1150°C, keep it for 4 hours, and cool it with the furnace. After homogenization treatment, the ingot is heated to 1045-1050°C, and hot-forged on a 2-roll rolling mill to form a 30×90mm ingot; each surface of the obtained ingot is milled, and the milling thickness is 2.5-5mm / Then, heat the milled ingot to 1130°C, and hot-roll it to a slab with a thickness of 2-3mm; the rolling process is: the starting rolling temperature is 1050°C; the final rolling temperature is 850°C; the pass deformation is 80-85%; after pickling the hot-rolled slab for 5 minutes, wash it with cold water and hot water in turn, and then use compressed air to dry it to remove the surface scale; put the pickled slab at room temperature in 2 Rough rolling on a rolling mill to form a slab with a thickness of 1mm; the deformation of each p...

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Abstract

The invention provides copper-nickel system precision resistor alloy foil which comprises the following components in percentage by weight: 40-48% of Ni, 1.4-1.8% of Mn, 0.1-0.3% of Fe, 0.3% of Si and balance of Cu. The preparation method comprises the steps of homogenizing treatment, hot forging, face milling, hot rolling, pickling, cold rolling in steps and annealing of finished products. The technical method is simple and convenient to operate, and the prepared foil is 0.005mm thick, can meet the operating requirements of a sensitive grid of a bridge fatigue life gauge, and can be used as a material of the sensitive grid of a bridge fatigue life gauge.

Description

technical field [0001] The invention relates to a precision resistance alloy foil material with resistance fatigue accumulation performance and a preparation method thereof, in particular to a copper-nickel series precision resistance alloy foil material and a preparation method, which are mainly used in sensitive grids of bridge fatigue life meters. The invention belongs to the technical field of resistance sensor manufacturing. technical background [0002] In 1966, there was a report on the study of fatigue life meter abroad, which immediately attracted great attention. Darrell R. Harting's paper focuses on the automatic accumulation of resistance with the fatigue history-an inherent characteristic of this fatigue life meter. [0003] In 1972, Rober S. Horne and Oscar L. Freyre introduced the resistance fatigue accumulation performance of the fatigue life gauge made of special annealed constantan foil, the construction of the strain multiplier and the resistance fatigue ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22F1/08
Inventor 任伟新肖丹
Owner CENT SOUTH UNIV
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