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Application of spiral crystal selector in preparation of thermocouple wire material, thermocouple wire and application of thermocouple wire

A technology of spiral crystal selector and galvanic couple, which is applied in the field of materials, can solve the problems of measurement accuracy error and interference measurement accuracy, and achieve the effects of reducing internal resistance, improving temperature measurement accuracy, and small internal resistance

Pending Publication Date: 2020-05-15
INST OF FLEXIBLE ELECTRONICS TECH OF THU ZHEJIANG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inhomogeneity of the thermocouple wire material will cause its own measurement accuracy error. This is because the positive and negative electrodes are in a temperature gradient field, so this inhomogeneity will generate an additional thermoelectric potential on the thermocouple wire, which will interfere measurement accuracy

Method used

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  • Application of spiral crystal selector in preparation of thermocouple wire material, thermocouple wire and application of thermocouple wire
  • Application of spiral crystal selector in preparation of thermocouple wire material, thermocouple wire and application of thermocouple wire

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preparation example Construction

[0052] According to the second aspect of the present invention, the present invention provides a galvanic wire. According to an embodiment of the present invention, such as figure 1 As shown, the preparation method of the galvanic couple wire includes: (1) adding a seed crystal to a spiral crystal selector and placing it on the crystal starter, and adjusting the temperature of the crystal starter to partially melt the seed crystal; (2) The raw material of the galvanic wire is melted, and the obtained molten liquid is injected into the spiral crystal selector to form a whole with the melting part of the seed crystal, and stand still; (3) The spiral crystal selector obtained in step (2) is vertically immersed in the cooling liquid , In order to cool and crystallize the molten liquid from bottom to top to obtain a single crystal ingot material; (4) stretch the single crystal ingot material to obtain a single crystal wire; (5) perform stress relief annealing on the single crystal w...

Embodiment 1

[0069] An ultra-long T-type single crystal couple wire, and its preparation method includes the following steps:

[0070] 1) Preparation of positive and negative single crystal ingot materials:

[0071] 2.75Kg pure copper powder and 2.25Kg pure nickel powder are uniformly mixed as negative electrode material; 5Kg pure copper powder is used as positive electrode material.

[0072] The seed crystals of the positive electrode and the negative electrode material are prepared separately, and the seed crystals are respectively installed on the crystal starter in the spiral crystal selector. The temperature of the crystal starter is adjusted to partially melt the seed crystals to form a solid-liquid paste zone, and the temperature is maintained for 30 minutes.

[0073] Smelt the negative electrode raw materials in a crucible at 1300°C to obtain a molten alloy melt; after the crystal starter is kept warm, pour the molten superalloy melt into the spiral crystal selector to form a whole with th...

Embodiment 2

[0078] An ultra-long J-type single crystal couple wire, and its preparation method includes the following steps:

[0079] 1) Preparation of positive and negative single crystal ingot materials:

[0080] 2.75Kg pure copper powder and 2.25Kg pure nickel powder are uniformly mixed as negative electrode material; 5Kg pure iron powder is used as positive electrode material.

[0081] The seed crystals of the positive electrode and the negative electrode material are prepared separately, and the seed crystals are respectively installed on the crystal starter in the spiral crystal selector. The temperature of the crystal starter is adjusted to partially melt the seed crystals to form a solid-liquid paste zone, and the temperature is maintained for 30 minutes.

[0082] Smelt the negative electrode raw materials in a crucible at 1300°C to obtain a molten alloy melt; after the crystal starter is kept warm, pour the molten superalloy melt into the spiral crystal selector to form a whole with the ...

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Abstract

The invention discloses an application of a spiral crystal selector in preparing a thermocouple wire material, a thermocouple wire and an application of the thermocouple wire. In the application, thestep of the spiral crystal selector for preparing the thermocouple wire comprises the steps: adding seed crystals into the spiral crystal selector, putting the spiral crystal selector on a crystal opener, and adjusting the heat preservation temperature of the crystal opener so as to partially melt the seed crystals; carrying out melting treatment on a thermocouple wire raw material, injecting theobtained molten liquid into the spiral crystal selector to form a whole with the molten part of the seed crystal, and standing; the spiral crystal selector is vertically immersed into cooling liquid,so that the molten liquid is cooled and crystallized from bottom to top, and a single crystal ingot-shaped material is obtained; carrying out stretching forming treatment on the single crystal ingot-shaped material so as to obtain a single crystal wire; and carrying out stress relief annealing on the single crystal wire so as to obtain the positive electrode and / or negative electrode thermocouplewire. The spiral crystal selector is used for preparing the temperature measuring thermocouple wire material, so that the overall uniformity of the thermocouple wire can be remarkably improved, the internal resistance is reduced, and the temperature measuring precision of the thermocouple is remarkably improved.

Description

Technical field [0001] The invention belongs to the field of materials, and specifically relates to the use of a spiral crystal selector in the preparation of galvanic wire materials, and the galvanic wire and its application. Background technique [0002] Temperature is a very important parameter in industrial production and scientific experiments. Many physical phenomena and chemical properties are related to temperature. Many production processes can only be carried out within a specific temperature range. Therefore, in modern life, accurate temperature is indispensable. information. With the continuous development of science and technology and the in-depth application of temperature sensors, people have put forward higher and higher requirements for the physical structure and measurement accuracy of temperature sensors. Thermoelectric temperature sensor is the most commonly used temperature detection device in daily life, industrial production and scientific research. It us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/02C30B29/52C30B29/06C30B11/00C30B33/02G01K7/02
CPCC30B29/02C30B29/52C30B29/06C30B11/00C30B11/002C30B33/02G01K7/02
Inventor 冯雪傅棋琪
Owner INST OF FLEXIBLE ELECTRONICS TECH OF THU ZHEJIANG
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