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Method for preparing nickel/chromium/iron multi-component high-resistance electrothermal alloy strip

An electrothermal alloy, nickel-chromium-iron-based technology, applied in the field of preparation of nickel-chromium-iron-based multi-component high-resistance electrothermal alloy strips, can solve problems such as gaps and uneven product quality

Active Publication Date: 2014-07-23
YANCHENG XINYANG ELECTROTHERMAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] Further illustrate and understand the present invention through embodiment below.

[0009] Prepare the alloy strip of the embodiment according to the following method: (1) ingredients: according to C: 0.0001%, Si: 0.5%, Mn: 1.1%, Al: 1%, Cr: 13%, Ni: 32.6%, Co: 3.2 %, Hf: 1.5%, Zr: 2.8%, Nb: 1.4%, Ti: 4.3%, Mo: 0.7%, Tb: 0.08%, Dy: 0.05%, Ce: 0.05%, B: 0.01%, S≤0.0001 %, P≤0.0001%, the balance is iron and unavoidable impurities for batching; (2) melting: put the above raw materials into a magnetic levitation vacuum induction melting furnace, and vacuumize to 1×10 -3 Pa, filled with high-purity argon to 1×10 4 Pa, melted above 2800°C and then cooled with the furnace to form an alloy ingot; (3) Forging: put the above alloy ingot into a box-type resistance furnace at 300°C for heating, heat up to 1350°C within 2 hours, keep it warm for 25 minutes, and put it into the isothermal Forging in the forging machine, the total deformation is greater than 50%, the opening forging...

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Abstract

The present invention relates to a method for preparing a nickel / chromium / iron multi-component high-resistance electrothermal alloy strip. The method comprises the steps of preparing the raw materials, melting, forging, rolling, carrying out heat treatment after rolling and the like. According to the method disclosed by the invention, the morphology of inclusions is improved by optimizing the elements composition and proportion of nickel / chromium / iron electrothermal alloy and optimizing process parameters of melting, forging, rolling and heat treatment to further improve the mechanical properties, use temperature and service life of the alloy strip. The deficiencies in the prior art are overcome and good industrial application prospects are achieved.

Description

Technical field: [0001] The invention relates to a preparation method of nickel-chromium-iron multi-element high-resistance electrothermal alloy strip. 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. Its maximum service temperature is 1100 ℃, which belongs to the medium temperature grade electrothermal alloy. There are as many as h...

Claims

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Application Information

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IPC IPC(8): C22C30/00C22F1/00
Inventor 郭健郭小芳郭乃林
Owner YANCHENG XINYANG ELECTROTHERMAL MATERIAL CO LTD