Ni-Al exothermic resistance alloy material

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

Active Publication Date: 2013-07-24
CHONGQING CHUANYI AUTOMATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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Embodiment Construction

[0012] The composition ratio of the nickel-aluminum heating resistance alloy material of the present invention is shown in Table 1. The materials according to the ratio of Table 1 are smelted in a vacuum induction furnace and protected by argon (intermediate frequency, intermediate frequency, Electroslag smelting), hot forging---hot rolling---drawing---annealing to obtain the nickel-aluminum heating resistance alloy material of the present invention. The specific preparation method of the heating resistance alloy material is as follows:

[0013] 1) The above alloy is smelted by vacuum induction melting or intermediate frequency + electroslag remelting, and the addition of each element can be added by pure metal or by intermediate alloy.

[0014] 2) The above alloy is drawn after hot forging, hot rolling, and heat treatment, and then repeated heat treatment and drawing to a wire of the required specification.

[0015] Table 1 Composition (content) of the nickel-aluminum heating resis...

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Abstract

The invention discloses a Ni-Al exothermic resistance alloy material. The main components of the Ni-Al exothermic resistance alloy material are composed of Ni, Si, Mn, Al and Ti and separately added with one or more of microelements Fe, Co and rare earth. The high-temperature life of the resistance alloy manufactured from the Ni-Al exothermic resistance alloy material 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 material. Background technique [0002] Nickel-aluminum heating resistor alloys are used in the production of overheating protection and overheating protection components that accurately control current overload, effectively preventing (motors, transformers, etc.) from overheating due to excessive current. Due to a wide range of electric heating appliances such as water dispensers, water heaters, sandwich toasters, dishwashers, dryers, sterilization cabinets, microwave ovens, electric coffee makers, electric cookers, refrigerators, air conditioners, glue machines, office equipment, car seat heaters, etc. use. [0003] The working temperature of the nickel-aluminum heating resistance alloy is about 1200℃, and the alloy material is required to have high high temperature strength, high temperature oxidation resistance, heat corrosion resistance, and good fatigue ...

Claims

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Application Information

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