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New high-resistance electrical heating alloy material and preparation method thereof

An electrothermal alloy and high-resistance technology, applied to high-resistivity electrothermal alloy materials, Cr20Ni80Zr materials, new high-resistance electrothermal alloy materials and their preparation fields, can solve the problem that the mechanical performance requirements of industrial electrothermal elements cannot be met, and the service life can only reach 2000 hours, affecting the service life of the finished product, etc., to achieve the effect of excellent anti-oxidation performance, reasonable component design, and ensuring safety and reliability

Active Publication Date: 2012-07-04
JIANGSU XINHUA ALLOY ELECTRIC
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Problems solved by technology

Although the widely used nickel-chromium alloy Cr20Ni80 has the advantages of high melting point, small thermal expansion coefficient and good oxidation resistance, it still has the disadvantages of poor high-temperature strength and short service life. 0 C, its anti-oxidation performance is significantly reduced, and its service life can only reach 2000 hours
In addition, in the process of producing Cr20Ni80, due to the unreasonable design of the preparation process, sometimes the ingot breaks and cracks during the forging process, which seriously affects the service life of the finished product and is far from meeting the mechanical properties of industrial heating elements. Require

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  • New high-resistance electrical heating alloy material and preparation method thereof
  • New high-resistance electrical heating alloy material and preparation method thereof
  • New high-resistance electrical heating alloy material and preparation method thereof

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Embodiment Construction

[0049] The present invention is further described and understood by non-limiting examples below.

[0050] A new type of high-resistance electrothermal alloy material of the present invention has prepared 5 sets of examples, and the furnace numbers are: 113-0006, 0007, 0008, 0009, and 0010. The composition and content of the new high-resistance electric heating alloy material of embodiment 1-5 are calculated by weight %, as follows:

[0051] The first group: furnace number: 113-0006 C:0.04%; Si:1.35%; Mn:0.20%; P:0.010%; S:0.006%; Cr:22.5%; Ni:75.0%; Al:0.20%; Fe: 0.2%; Ti: 0.10%; Zr: 0.50%; RE: 0.30%.

[0052] The second group: furnace number: 113-0007 C:0.03%; Si:1.20%; Mn:0.30%; P:0.008%; S:0.005%; Cr:22.0%; Ni:75.0%; Al:0.22%; Fe: 0.3%; Ti: 0.10%; Zr: 0.45%; RE: 0.25%.

[0053] The third group: furnace number: 113-0008 C:0.05%; Si:1.25%; Mn:0.25%; P:0.008%; S:0.004%; Cr:21.5%; Ni:75.5%; Al:0.15%; Fe: 0.5%; Ti: 0.10%; Zr: 0.30%; RE: 0.20%.

[0054] The fourth group: fur...

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Abstract

The invention discloses a new high-resistance electrical heating alloy material and a preparation method thereof. The material comprises the following components by weight percent: 0.01-0.06% of C, 1.0-1.5% of Si, 0.1-0.6% of Mn, less than or equal to 0.02% of P, less than or equal to 0.015% of S, 20-23% of Cr, 74.0-78.0% of Ni, 0.1-0.25% of Al, 0.2-1.0% of Fe, 0.01-0.2% of Ti, 0.2-0.8% of Zr and the balance of inevitable impurities. The preparation method comprises the steps of smelting, forging, wiring, annealing, rinsing, drawing and the like. Compared with Cr20Ni80, the prepared new high-resistance electrical heating alloy material has better oxidation resistance and is an electrical heating alloy material with low thermal expansion coefficient, good high temperature strength, long service life and high resistivity.

Description

technical field [0001] The invention relates to a high-resistivity electrothermal alloy material in the technical field of metal materials, in particular to a novel high-resistance electrothermal alloy material and a preparation method thereof. It specifically relates to a Cr20Ni80Zr material, which is mainly used as an electrothermal alloy material for household appliances, industrial electric furnaces and heating elements. Background technique [0002] Electrothermal alloy is a functional material that converts electrical energy into heat energy. Its maximum service temperature can reach 1400 ° C. It is used to manufacture various electric heating elements in the fields of metallurgy, machinery, petrochemical, electrical, construction, military industry, and household appliances. At present, electrothermal alloy materials have become an important engineering alloy material and occupy an important position in the national economy. With the development of the household app...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/05
Inventor 华大凤王树平
Owner JIANGSU XINHUA ALLOY ELECTRIC
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