Alloy material with high temperature coefficient of resistance and preparation method thereof

Abstract

The invention provides an alloy material with high temperature coefficient of resistance. The alloy material is prepared by adding six metal components as the additives to nickel-ferrum alloy, and smelting same to obtain the product, wherein the six metal components are respectively germanium, zirconium, cerium, titanium, aluminum and ferrum; and the alloy material comprises the following components in percentage by weight: 50-65% of component Ni, 14-21% of component Cr, 0.1-0.9% of component Ge, 0.15-0.5% of component Ce, 0.2-1% of component Zr, 1.1-3.5% of component Ti, 0.5-2% of component Al, and the balance of component Fe. The invention also provides a preparation method of the alloy material. The alloy material prepared by the preparation method provided by the invention is of 8.2g / cm<3> based on the density, and has the resistivity of 1.53 (microhm.megabyte.20 DEG C); and the alloy material has temperature coefficient of resistance of 240aR / *10<-6>DEG / C under 100-800 DEG C; and the temperature is in good linear relation to the resistivity.

Description

technical field [0001] The invention relates to a heating resistance wire material, specifically a heating body material suitable for various heating tools and equipment that need to automatically control the heating temperature; especially suitable for high requirements on temperature control and not suitable for A high-resistivity, high-temperature-coefficient alloy material on equipment and tools equipped with temperature sensors; the invention also provides a preparation method for the above-mentioned material. technical background [0002] In the field of hardware tools, especially in electric soldering irons, the requirements for heating wires are very high. Not only are heating wires required to be small in size, light in weight, and fast in heating speed, but they also need to be able to accurately display and control the temperature of the soldering iron tip. Ordinary electric soldering irons only use resistance wires to generate heat, and rely on the experience of ...

AI Technical Summary

Problems solved by technology

The disadvantages of the most traditional electric soldering iron are obvious, but for the modern controllable soldering station with ceramic heating core, the disadvantages mainly focus on the following aspects: 1. Due to the external heating method, the temperature conduction distance is long, and the soldering iron It takes a long time for the temperature of the head to reach the working temperature, and the loss of heat energy is large during the long-distance conduction of the temperature, and its working efficiency is low and energy consumption is high.

2. Due to the use of a temperature sensor, and the sensor is close to the ceramic heating core, there will be a large gap between the detected temperature and the actual temperature due to environmental temperature, wind speed, etc., although these can be adjusted by detecting the temperature of the soldering iron tip , but it is difficult to grasp the environmental changes in the work engineering, such results will lead to the instability of welding weight and the burning of electronic components

3. Because the temperature sensor is close to the heating element, the temperature sensor is very easy to age and fail in a high-temperature and aerobic environment for a long time

So far, there is no effective way to solve the problem of electric soldering iron heating. It can reach the working temperature within 1~2 seconds from the start of power on. It is small in size, light in weight and easy to operate; accurate in temperature control; internal heating material with long service life

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