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Novel nickel-chromium-iron electrothermal alloy

An electrothermal alloy, nickel-chromium-iron technology, applied in the field of new-type nickel-chromium-iron electrothermal alloy, can solve the problems of high price, high nickel content, and application field restrictions, and achieve low price, low density, improved high temperature creep performance and resistance Oxidative effect

Active Publication Date: 2017-05-31
JINCHUAN GROUP LIMITED +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Jinchuan Group Co., Ltd. Nickel Alloy Company is the main domestic Cr20Ni80 alloy production unit, but due to its high nickel content, the price is expensive, and the application fields of the products are limited

Method used

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  • Novel nickel-chromium-iron electrothermal alloy

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Embodiment 1

[0021] The invention provides a technical solution: a novel nickel-chromium-iron electric heating alloy, which is made of the following raw materials in various mass percentages: Si: 0.7%, Mn: 0.3%, Cr: 20%, Ni: 41%, and the rest The amount is iron and unavoidable trace elements; the weight percentage of unavoidable trace elements is 0.05%.

[0022] In this embodiment, a variety of rare trace elements, including cobalt, niobium, aluminum, molybdenum, rhenium, titanium, and yttrium, are added to the raw materials, which can improve the high-temperature creep performance and oxidation resistance of the nickel-chromium-iron electric heating alloy.

[0023] The preparation method of the present embodiment comprises the following steps:

[0024] A. Prepare and mix all the raw materials and put them into a non-vacuum induction melting furnace for vacuum induction melting. The melting temperature is 1580°C and the refining time is 30 minutes;

[0025] B. Analyze the composition of t...

Embodiment 2

[0032] The invention provides a technical solution: a novel nickel-chromium-iron electric heating alloy, which is made of the following raw materials in various mass percentages: Si: 1.6%, Mn: 0.6%, Cr: 23%, Ni: 43%, and the rest The amount is iron and unavoidable trace elements; the weight percent content of unavoidable trace elements is 0.06%.

[0033] In this embodiment, a variety of rare trace elements, including cobalt, niobium, aluminum, molybdenum, rhenium, titanium, and yttrium, are added to the raw materials, which can improve the high-temperature creep performance and oxidation resistance of the nickel-chromium-iron electric heating alloy.

[0034] The preparation method of the present embodiment comprises the following steps:

[0035] A. Prepare and mix all the raw materials and put them into a non-vacuum induction melting furnace for vacuum induction melting. The melting temperature is 1520°C and the refining time is 20 minutes;

[0036] B. Analyze the composition...

Embodiment 3

[0043] The invention provides a technical solution: a novel nickel-chromium-iron electric heating alloy, which is made of the following raw materials in various mass percentages: Si: 0.9%, Mn: 0.4%, Cr: 21%, Ni: 42%, and the rest The amount is iron and unavoidable trace elements; the weight percentage of unavoidable trace elements is 0.1%.

[0044] In this embodiment, a variety of rare trace elements, including cobalt, niobium, aluminum, molybdenum, rhenium, titanium, and yttrium, are added to the raw materials, which can improve the high-temperature creep performance and oxidation resistance of the nickel-chromium-iron electric heating alloy.

[0045] The preparation method of the present embodiment comprises the following steps:

[0046] A. Prepare and mix all the raw materials and put them into a non-vacuum induction melting furnace for vacuum induction melting. The melting temperature is 1540°C and the refining time is 25 minutes;

[0047] B. Analyze the composition of th...

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Abstract

The invention discloses a novel nickel-chromium-iron electrothermal alloy. The novel nickel-chromium-iron electrothermal alloy is prepared from, by mass percent, 0.7%-1.6% of Si, 0.3%-0.6% of Mn, 20%-23% of Cr, 41%-43% of Ni and the balance iron and inevitable microelements. According to the alloy, due to the fact that the low-price and low-density iron element is adopted for replacing a high-price and high-density nickel element, compared with an original Cr20Ni80 alloy, the novel nickel-chromium-iron electrothermal alloy is low in density and low in price, plastic machinability, weldability, high-temperature mechanical performance, the service life and other main performance indexes remain unchanged, and the Cr20Ni80 alloy can be completely replaced.

Description

technical field [0001] The invention relates to the technical field of electrothermal alloys, in particular to a novel nickel-chromium-iron electrothermal alloy. Background technique [0002] Electrothermal alloys refer to resistance alloys that use the resistance properties of substances to manufacture heating elements, and are alloy materials used to manufacture electric heating elements. When an electric current passes through the alloy element, the Joule effect is generated, which converts electrical energy into heat energy. Electrothermal alloy products are generally made into thin wire (heating wire), round wire, and flat strip (resistance strip). Under special requirements, they can also be made into pipes and castings. They are widely used in various aspects of the national economy and daily life. [0003] Nickel-chromium electric heating alloys represented by Cr20Ni80 alloys are widely used in high-temperature heating components around 1100 °C due to their good pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/00C22C1/02C22F1/16
CPCC22C1/023C22C19/058C22C30/00C22F1/10C22F1/16
Inventor 孙光曦王晓军夏天东南宏强
Owner JINCHUAN GROUP LIMITED
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