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Resistance material capable of preventing overheat generation caused by excessive current

A resistance material, oversized technology, applied in the field of resistance materials, can solve the problems of not being able to meet the minimum life, can not meet, etc., to achieve the effect of improving strength, improving high temperature life, and prolonging high temperature life

Active Publication Date: 2013-07-24
CHONGQING CHUANYI AUTOMATION
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  • Summary
  • 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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  • Resistance material capable of preventing overheat generation caused by excessive current
  • Resistance material capable of preventing overheat generation caused by excessive current

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Embodiment Construction

[0011] According to the present invention, the proportioning ratio of the component mass percentages of the resistive material that prevents overheating due to excessive current is shown in Table 1. According to the proportioning material in Table 1, the material is smelted in a vacuum induction furnace, and argon is used for protection (also Can adopt intermediate frequency, electroslag smelting), go through hot forging---hot rolling---drawing---annealing, obtain the nickel-aluminum heating resistance alloy of the present invention. The specific preparation method of the heating resistance material is as follows:

[0012] 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.

[0013] 2) Drawing the above alloy through hot forging, hot rolling, and heat treatment, and then repeating heat treatment and drawing ...

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Abstract

The invention discloses a resistance material capable of preventing overheat generation caused by excessive current. The main composition of the resistance material is as follows: one or more of microelements, such as Al, Fe, Co and rare earth are added on the basis of NiSiMnTi. The high-temperature life of the prepared resistance alloy can be increased obviously on the condition of ensuring the resistivity.

Description

technical field [0001] The invention relates to a resistance material, in particular to a resistance material for preventing overheating caused by excessive current. 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...

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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