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Preparation technology of high-performance thermoelectric coupling metal wire

A preparation process and technology for thermocouples, which are used in thermometers that use electrical/magnetic components directly sensitive to heat, measure heat, and use electrical devices, etc., can solve material waste, high production costs, and nickel-titanium-magnesium-nickel thermocouples. Alloy wire hit rate is low and other problems, to achieve the effect of reducing production cost, prolonging service life and improving production efficiency

Inactive Publication Date: 2019-05-14
张王震
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  • Application Information

AI Technical Summary

Problems solved by technology

In the production process of various other production plants in my country, due to the limitation of the process, the hit rate of the nickel-titanium-magnesium-nickel thermocouple alloy wire produced is very low, and it can reach "high precision", that is, only a few can reach the I level. a part
In order to meet the needs of customers, it can only be selected, which results in the production of a lot of products to select a part, which makes the production cost very high and causes waste of materials

Method used

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Embodiment Construction

[0011] The present invention will be further described in conjunction with preferred embodiments now.

[0012] A preparation process of a high-performance thermoelectric coupling metal wire, which has a positive conductor and a negative conductor, the positive conductor is a nickel-titanium alloy wire, and its chemical composition weight percentage is: titanium 9.5±0.02%, cobalt 1.0±0.02%, indium 0.40±0.02 %, iron 0.05±0.005%, yttrium 0.05±0.005%, mixed rare earth 0.05±0.005%, carbon not greater than 0.04%, sulfur not greater than 0.005%, iron not greater than 0.05% and nickel in the balance; The negative electrode conductor is a magnesium-nickel alloy wire, and its chemical composition weight percent is: nickel 43.5±0.02%, manganese 0.4±0.01%, magnesium 0.16±0.01%, iron 0.05±0.01%, carbon not greater than 0.1%, carbon not greater than 0.01% of sulfur and the balance of magnesium.

[0013] The preparation process steps of the above-mentioned high-performance thermoelectric co...

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Abstract

The invention discloses a preparation technology of a high-performance thermoelectric coupling metal wire. Constituents of a nickel-titanium alloy wire comprise titanium, cobalt, indium, iron, yttrium, carbon, sulfur, iron and nickel elements and misch metal; constituents of a magnesium -nickel alloy wire comprise nickel, manganese, magnesium, iron, carbon, sulfur and magnesium elements, and the technology comprises the following technical steps: a, preparing raw materials; b, vacuum melting; c, hot rolling; d, wire drawing, annealing; e, detecting finished product, packaging and delivering. The nickel-titanium -magnesium -nickel thermoelectric coupling metal wires produced through unique product formula and production technology of the invention can all reach high-precision I-class level.

Description

technical field [0001] The invention relates to the application field of alloys, in particular to a preparation process of a high-performance thermoelectric coupling metal wire. Background technique [0002] Nickel-titanium-magnesium-nickel thermocouple alloy wire is mainly used to manufacture E-type thermocouples. The stability of the E-type thermocouple and the temperature measurement deviation mainly depend on the thermal electromotive force accuracy grade of the nickel-titanium-magnesium-nickel alloy wire. "Wire" divides the thermal electromotive force accuracy grades into I, II, and III. The E-type thermocouple made of high-precision grade I nickel-titanium-magnesium-nickel thermocouple alloy wire has the best stability and the smallest temperature measurement deviation. In the production process of various other production plants in my country, due to the limitation of the process, the hit rate of the nickel-titanium-magnesium-nickel thermocouple alloy wire produced i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/02C22C19/03C22C23/00
Inventor 张王震
Owner 张王震
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