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A kind of preparation method of ni-cr-fe electric heating alloy

A ni-cr-fe, electrothermal alloy technology, applied in the field of Ni-Cr-Fe electrothermal alloy preparation, can solve problems such as gaps, uneven product quality, etc., to improve service life, improve mechanical properties, and improve morphology Effect

Inactive Publication Date: 2018-10-30
YANCHENG XINYANG ELECTROTHERMAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are as many as hundreds of manufacturers specializing in the production of electric heating alloys in my country, but the product quality is uneven, and the quality and service life of Cr20Ni35 products are far behind those of imported alloy wires.

Method used

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Effect test

Embodiment Construction

[0007] Further illustrate and understand the present invention through embodiment below.

[0008] The finished Ni-Cr-Fe electrothermal alloy of the embodiment is prepared according to the following method: (1) Ingredients: ingredients are made according to the following composition: C: 0.05%, Si: 1.2%, Mn: 0.7%, Al: 3.8%, Cr: 9.5 %, Ni: 28%, Hf: 1.3%, Zr: 0.9%, Nb: 1.7%, Ti: 3%, V: 1.6%, Ce: 0.07%, La: 0.04%, S≤0.001%, P≤0.001 %, the balance is iron and unavoidable impurities; (2) Smelting: put the above raw materials into an intermediate frequency induction furnace for melting, and refine them at 1750°C for 10 minutes after complete melting; (3) Electroslag refining: use fluorite and Titanium dioxide to prepare arc starter, use CaF 2 、Al 2 o 3 Production of remelting electroslag system; furnace loading, arc slagging, smelting, feeding, cooling, and making ingots; (4) forging: put the above ingots into a box-type resistance furnace at 300°C for heating, within 2 hours Rais...

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Abstract

The invention relates to a preparation method of a Ni-Cr-Fe electrothermal alloy, which comprises the following steps: proportioning, smelting, electroslag refining, forging, hot rolling, post-rolling heat treatment, rinsing, multipass drawing and the like. By optimizing the element composition and proportioning of the Ni-Cr-Fe electrothermal alloy, the method optimizes the technological parameters of the smelting, electroslag refining, forging, hot rolling and post-rolling heat treatment, improves the inclusion shape, enhances the mechanical properties, service temperature and service life of the alloy strip, overcomes the defects in the prior art, and thus, has favorable industrial application prospects.

Description

Technical field: [0001] The invention relates to a preparation method of a Ni-Cr-Fe electric heating alloy. Background technique: [0002] Electrothermal alloy is a functional alloy material that converts electrical energy into heat energy. It is used to manufacture various electric heating elements in the fields of metallurgy, machinery, petrochemical, electrical, construction, and household appliances. At present, electrothermal alloys have become an important engineering alloy material and occupy an important position in the national economy. According to the chemical composition, electrothermal alloys can be divided into three series: nickel-chromium alloy, nickel-chromium-iron alloy and iron-chromium-aluminum alloy. Among them, Cr20Ni35 is a typical representative of nickel-chromium-iron alloy, and its maximum service temperature is 1100 ° C, which belongs to the medium temperature electric heating alloy. There are as many as hundreds of manufacturers specializing in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/50C22C30/00C21D8/02C22F1/00
Inventor 郭健郭小芳郭乃林
Owner YANCHENG XINYANG ELECTROTHERMAL MATERIAL CO LTD
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