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Preparation method of industrial anti-attenuation platinum and platinum rhodium thermocouple

An anti-attenuation, thermocouple technology, applied in the direction of thermometers using electric/magnetic elements that are directly sensitive to heat, using electrical devices, using electromagnetic means, etc., can solve the problem that the surface of cylindrical wires cannot be sprayed, and achieve improvement The service life and the effect of slowing down oxidation volatilization

Active Publication Date: 2020-03-27
英特派铂业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this application is, in order to slow down the thermoelectric potential attenuation of S, R, and B thermocouples when they are used at high temperatures, cleverly apply the stranding technology, and spray the refractory material on the surface of the material, so as to solve the problem that the surface of the traditional cylindrical wire cannot be sprayed. problem, provide a kind of preparation method of industrial anti-attenuation platinum and platinum-rhodium thermocouple

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Sheet rolling: Pure platinum is rolled into a sheet with a length of 500 mm, a width of 300 mm, and a thickness of 0.5 mm with a rolling mill.

[0022] (2) Pretreatment: degrease and clean the surface of the pure platinum sheet obtained in step (1) with alkali, acid and pure water, and then use silicon nitride sand for sandblasting until the surface of the substrate has no metallic luster, and the roughening is completed After treatment, clean the surface with absolute ethanol and a high-pressure air gun.

[0023] (3) Cutting: cutting the pretreated pure platinum plate obtained in step (2) to obtain several strips with a width of 3.0 mm.

[0024] (4) twisted wire: twist the pure platinum strip obtained in step (3) into a spiral shape with a twisting machine, and the pitch is 10mm.

[0025] (5) Spraying: The screw type obtained in step (4) is fixed with a clamp, and sprayed with a plasma automatic spraying equipment. Second, the powder used is Al 2 o 3 pink.

Embodiment 2

[0027] (1) Sheet rolling: Platinum rhodium 10 is rolled into a sheet with a length of 500 mm, a width of 300 mm, and a thickness of 0.5 mm with a rolling mill.

[0028] (2) Pretreatment: the platinum-rhodium 10 thin plate obtained in step (1) is degreased and cleaned with alkali, acid and pure water on the surface of the plate, and then sandblasting is carried out with silicon nitride sand until the surface of the substrate has no metallic luster, and the rough surface is finished. After chemical treatment, clean the surface with absolute ethanol and high-pressure air gun.

[0029] (3) Cutting: cutting the pretreated platinum-rhodium 10 plate obtained in step (2) to obtain several strips with a width of 3.0 mm.

[0030] (4) twisted wire: twist the pure platinum strip obtained in step (3) into a spiral shape with a twisting machine, and the pitch is 10mm.

[0031] (5) Spraying: The screw type obtained in step (4) is fixed with a clamp, and sprayed with a plasma automatic spray...

Embodiment 3

[0034] (1) Sheet rolling: Pure platinum is rolled into a sheet with a length of 1000 mm, a width of 500 mm, and a thickness of 1.5 mm with a rolling mill.

[0035] (2) Pretreatment: degrease and clean the surface of the pure platinum sheet obtained in step (1) with alkali, acid and pure water, and then use silicon nitride sand for sandblasting until the surface of the substrate has no metallic luster, and the roughening is completed After treatment, clean the surface with absolute ethanol and a high-pressure air gun.

[0036] (3) Cutting: cutting the pretreated pure platinum plate obtained in step (2) to obtain several strips with a width of 5.0 mm.

[0037] (4) twisted wire: the long strip obtained in step (3) is twisted into a spiral shape with a twisting machine, and the pitch is 20mm.

[0038] (5) Spraying: the screw type obtained in step (4) is fixed with a clamp, sprayed with plasma automatic spraying equipment, the spraying current is 400A, the powder feeding speed is ...

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Abstract

The invention discloses a preparation method of an industrial anti-attenuation platinum and a platinum rhodium thermocouple. The preparation method comprises the following steps: (1) rolling, (2) pretreatment, (3) cutting, (4) stranding, and (5) spraying. The method has the advantages that sheet rolling, strip cutting, stranding, spraying and the like are adopted, and the refractory material is ingeniously and successfully sprayed to the surface of the platinum material; and after stranding, the platinum material is recovered to be cylindrical, and zirconium oxide magnetic beads can be penetrated, so that industrial use is not influenced at all. According to the method, oxidative volatilization of platinum and rhodium can be effectively slowed down, the attenuation trend of S, R and B typethermocouples is greatly reduced, and therefore the service life of the thermocouples is prolonged.

Description

technical field [0001] The present application relates to the technical field of metal materials, in particular to a method for preparing industrial anti-attenuation platinum and platinum-rhodium thermocouples. Background technique [0002] A thermocouple is a closed circuit formed by two different metal or alloy conductors. The S, R, and B thermocouples composed of platinum and platinum-rhodium alloys have large Seebeck coefficients and have stable and excellent thermoelectric properties. They are suitable for continuous temperature measurement in high-temperature atmospheric environments and other oxidizing environments. Because most of the channel materials used in the manufacture of large-scale ultra-thin substrate glass are platinum and platinum-rhodium alloys, and S, R, and B thermocouples are also made of the same material, so S, R, and B thermocouples are widely used in large Temperature measuring material in the manufacture of ultra-thin substrate glass. At presen...

Claims

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Application Information

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IPC IPC(8): G01K7/02C23C4/134C23C4/11C23C4/10
CPCG01K7/02C23C4/134C23C4/11C23C4/10
Inventor 熊雅玲金英杰李树屏杨志先尹俊
Owner 英特派铂业股份有限公司
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