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Ni-Al exothermic resistance alloy wire

A technology of heating resistors and alloy wires, applied in the field of resistance materials, can solve the problems of not being able to meet the minimum service life, and can not meet the requirements, and achieve the effects of improving strength, improving high-temperature life, and improving high-temperature stability

Active Publication Date: 2012-02-01
CHONGQING CHUANYI AUTOMATION
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  • Abstract
  • Description
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Problems solved by technology

There are generally two types of nickel-aluminum heating wires commonly used at present, corresponding to different types of overheating protection components. The first type is Ni-Si-Mn-Al alloy, and the resistivity at 20°C is 0.31μΩ.m, although the The resistivity of one type of material meets the above requirements, but its life is only 30min at 1250°C, which cannot meet the minimum life of 1.5h; the other is Ni-Si-Mn ternary alloy, and its resistivity at 20°C is 0.23μΩ. m, the life of this material is 10h at 1200°C, which cannot meet the minimum life of 15h required by the overheating protection element

Method used

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  • Ni-Al exothermic resistance alloy wire

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Embodiment Construction

[0010] The proportioning ratio of the heating resistance alloy wire component mass percentage of the present invention is shown in Table 1, and the material according to the proportioning in Table 1 is smelted in a vacuum induction furnace, and argon is used for protection (also can use intermediate frequency, electroslag smelting), through hot forging---hot rolling---drawing---annealing, the nickel-aluminum heating resistance alloy wire of the present invention is obtained. The specific preparation method of the heating resistance material wire is as follows:

[0011] 1) Vacuum induction smelting or intermediate frequency + electroslag remelting is used to smelt the above-mentioned alloys. The addition of various elements can be added in pure metals or in the form of intermediate alloys.

[0012] 2) Drawing the above alloy through hot forging, hot rolling, and heat treatment, and then repeating heat treatment and drawing to the wire material of the required specification.

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Abstract

The invention discloses a Ni-Al exothermic resistance alloy wire. The main components of the Ni-Al exothermic resistance alloy wire are Ni, Si, Mn, Al and Ti. The high-temperature life of the resistance alloy wire is obviously improved when the resistivity is guaranteed.

Description

technical field [0001] The invention relates to a resistance material, in particular to a nickel-aluminum resistance alloy wire. Background technique [0002] Nickel-aluminum heating resistance alloys are used in the production of overheating protection and overheating protection components for precise control of current overload, effectively preventing (motors, transformers, etc.) from overheating due to excessive current. Due to the wide range of electric heating appliances such as water dispensers, water heaters, sandwich toasters, dishwashers, dryers, disinfection cabinets, microwave ovens, electric coffee pots, electric cookers, refrigerators, air conditioners, gluing machines, office equipment, and car seat heaters use. [0003] The working temperature of the nickel-aluminum heating resistance alloy is about 1200°C, and the alloy material is required to have high high-temperature strength, high-temperature oxidation resistance, and heat-corrosion resistance when worki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/03
Inventor 冯蔓李联文
Owner CHONGQING CHUANYI AUTOMATION
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