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A kind of 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: 2021-06-11
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) Rolling sheet: Rolling the pure platinum rolled into a sheet having a length of 500 mm, a width of 300 mm, a thickness of 0.5 mm.

[0022] (2) Preprocessing: The pure platinum sheet obtained by step (1) is subjected to oil and cleaning with alkali, acid, and pure water, and then sandblasts with silicon nitride sand until there is no metal luster surface of the substrate. After treatment, the surface cleaning was performed with anhydrous ethanol and high pressure air gun.

[0023] (3) Cutting: The pretreatment pure platinum plate obtained by step (2) is cut to obtain a number of widths having a width of 3.0 mm.

[0024] (4) Twisted pair: The pure platinum long strip obtained by step (3) is twisted with a stranded type, and the pitch is 10 mm.

[0025] (5) Spraying: The clamp obtained by the step (4) is fixed, sprayed with a plasma automatic spraying device, the spray current is 40 g / min, the spray speed is 50mm / s, and sprayed back and forth 5 Second, the powder used ...

Embodiment 2

[0027] (1) Rolling sheet: The platinum ruthenium 10 is rolled into a sheet having a length of 500 mm and a width of 300 mm, a thickness of 0.5 mm.

[0028] (2) Preprocessing: The platinum ruthenium 10 sheet obtained by step (1) is subjected to oil and cleaning with alkali, acid, and pure water, and then sandblast with silicon nitride sand is performed until there is no metal luster surface of the substrate. After treatment, the surface cleaning was carried out with anhydrous ethanol and high pressure air gun.

[0029] (3) Cutting: The pretreatable platinum ruthenium 10 sheet obtained by step (2) is cut to obtain a number of strips having a width of 3.0 mm.

[0030] (4) Twisted pair: The pure platinum long strip obtained by step (3) is twisted with a stranded type, and the pitch is 10 mm.

[0031] (5) Spraying: The clamp obtained by the step (4) is fixed, sprayed with a plasma automatic spraying device, the spray current is 40 g / min, the spray speed is 50 mm / s, and sprayed back...

Embodiment 3

[0034] (1) Rolling sheet: Rolling the pure platinum rolled into a length of 1000 mm, a width of 500 mm, and a thickness of 1.5 mm.

[0035] (2) Preprocessing: The pure platinum sheet obtained by step (1) is subjected to oil and cleaning with alkali, acid, and pure water, and then sandblasts with silicon nitride sand until there is no metal luster surface of the substrate. After treatment, the surface cleaning was performed with anhydrous ethanol and high pressure air gun.

[0036] (3) Cutting: The preprocessing pure platinum plate obtained by step (2) is cut to obtain a portion of the width of 5.0 mm.

[0037] (4) Twisted pair: The length of the strap obtained by step (3) is twisted with the strand, and the pitch is 20 mm.

[0038] (5) Spraying: The clamp obtained by the step (4) is fixed, sprayed with a plasma automatic spraying device, the spray current is 400A, the powder powder is 50 g / min, the spray speed is 200mm / s, and sprayed back and forth 8 Second, the powder used is...

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Abstract

The application discloses a method for preparing an industrial anti-attenuation platinum and platinum-rhodium thermocouple, the preparation method comprising the following steps: (1) sheet rolling, (2) pretreatment, (3) cutting, (4) stranding , (5) spraying. Its advantages are as follows: this application uses methods such as rolling, cutting, stranding, and spraying to skillfully spray the refractory material on the surface of the platinum material. And after twisting, the platinum material returns to a cylindrical shape, and can also wear zirconia magnetic beads, which does not affect industrial use at all. The method of the present application can effectively slow down the oxidation and volatilization of platinum and rhodium, greatly reduce the attenuation tendency of S, R, and B thermocouples, thereby improving the service life of the thermocouples.

Description

Technical field [0001] The present application relates to the technical field of metallic materials, and more particularly to an industrial anti-failure platinum and a platinum ruthenium thermocouple. Background technique [0002] Thermocouple is a closed circuit in two different metallic or alloy conductors. S, R, B-type thermocoupler coefficient of platinum and platinum ruthenium alloy is large, with stable excellent thermoelectric properties, suitable for continuous temperature measurement in high temperature atmospheres and other oxidative environments. Since most of the channel materials used in large-size ultra-thin substrate glass are platinum and platinum rhodium alloy, S, R, and B-type thermocouples are also used as the same material, and therefore S, R, and B-type thermocouples are widely used in large Temperature measurement material for the manufacture of size ultra-thin substrate glass. At present, the life of TFT substrate production is 36 months or longer. This req...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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