A kind of preparation method of anti-rust and anti-corrosion iron-nickel alloy strip

An iron-nickel alloy and strip technology is applied in the field of preparation of rust-resistant and corrosion-resistant iron-nickel alloy strips, and can solve the problems of poor surface quality of ingots, poor homogeneity of hot-rolled billets, and poor surface quality, etc. Achieve the effect of saving manpower, improving product yield and simplifying production process

Active Publication Date: 2018-08-21
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

3) Coating an organic layer on the surface of the bimetal, such as varnish or polyester plastic, etc., but this method is not effective, because the organic coating tends to become brittle and peel off over time, so it can only be used for lower Operating temperature
In addition, the surface of some alloy forging blanks is uneven after finishing, resulting in defects such as poor uniformity and poor surface quality of hot-rolled blanks
When the traditional method is used to smelt and cast iron-nickel alloy ingots, the injection port of the alloy melt and the pouring mold are fixed. When the alloy melt is poured into the mold, the alloy melt concentrates at the injection port and spreads to both sides. Ingot surface quality is poor

Method used

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  • A kind of preparation method of anti-rust and anti-corrosion iron-nickel alloy strip
  • A kind of preparation method of anti-rust and anti-corrosion iron-nickel alloy strip
  • A kind of preparation method of anti-rust and anti-corrosion iron-nickel alloy strip

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Experimental program
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Effect test

Embodiment 1

[0031] A kind of preparation method of rust-proof and corrosion-resistant iron-nickel alloy strip provided by the present embodiment is implemented according to the following steps:

[0032] S1: Put the raw materials into the vacuum induction smelting furnace according to the proportion of ingredients, heat up to 1510°C under vacuum conditions, melt and refine them into alloy melt; the mass percentages of the raw materials are respectively 16.0% nickel, 8.0% chromium, and 0.6% zirconium. %, manganese 0.3%, silicon 0.15%, carbon 0.01%, iron 74.94%.

[0033] S2: The alloy melt is evenly poured into the flat combined ingot mold, and the pouring temperature is controlled at 1530°C. During the pouring process, the alloy melt is evenly poured into the flat combined ingot mold by reciprocating movement. An alloy slab with a width of 300 mm and a thickness of 70 mm is formed in the flat combined ingot mold, and the alloy slab is partially finished after it is demoulded and cooled.

...

Embodiment 2

[0044] A kind of preparation method of rust-proof and corrosion-resistant iron-nickel alloy strip provided by the present embodiment is implemented according to the following steps:

[0045] S1: Put the raw materials into the vacuum induction smelting furnace according to the proportion of ingredients, heat up to 1530°C under vacuum conditions, melt and refine them into alloy melt; the mass percentages of the raw materials are respectively 18.0% nickel, 9.0% chromium, and 1% zirconium. %, manganese 0.8%, silicon 0.3%, carbon 0.03%, iron 70.87%. ;

[0046] S2: The alloy melt is evenly poured into the flat combined ingot mold, and the pouring temperature is controlled at 1540°C. During the pouring process, the alloy melt is evenly poured into the flat combined ingot mold by reciprocating movement. An alloy slab with a width of 500 mm and a thickness of 50 mm is formed in the slab composite ingot mold, and the alloy slab is partially finished after it is demoulded and cooled.

...

Embodiment 3

[0055] A kind of preparation method of rust-proof and corrosion-resistant iron-nickel alloy strip provided by the present embodiment is implemented according to the following steps:

[0056] S1: Put the raw materials into the vacuum induction smelting furnace according to the proportion of ingredients, heat up to 1580°C under vacuum conditions, melt and refine them into alloy melt; the mass percentages of the raw materials are respectively 17.0% nickel, 8.5% chromium, and 0.8% zirconium. %, manganese 0.5%, silicon 0.2%, carbon 0.02%, iron 72.98%.

[0057] S2: The alloy melt is evenly poured into the flat combined ingot mold, and the pouring temperature is controlled at 1560°C. During the pouring process, the alloy melt is evenly poured into the flat combined ingot mold by reciprocating movement. An alloy slab with a width of 400 mm and a thickness of 40 mm is formed in the flat composite ingot mold, and the alloy slab is partially finished after it is demoulded and cooled.

...

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Abstract

The invention discloses a preparation method of a rust-proof anti-corrosion iron-nickel alloy strip. The method comprises the steps that a vacuum induction smelting furnace is adopted or smelting alloy, wherein the smelting temperature is from 1510 DEG C to 1580 DEG C, and the alloy comprises, by mass, 16.0%-18.0% of nickel, 8.0%-9.0% of chrome, 0.6%-1.0% of zirconium, 0.3%-0.8% of manganese, 0.15%-0.3% of silicon, 0.03% or smaller of carbon and the balance iron; a flat combined ingot mold is moved in a reciprocating mode in a pouring process, alloy smelted liquid is evenly poured into the flat combined ingot mold, and a cooled alloy flat ingot is finished, does not need to be forged and is directly heated and rolled to be a strip blank; and annealing, cleaning, cold rolling and other steps are carried out, and finally the needed alloy strip is obtained. By means of the preparation method, labor and energy consumption can be reduced, the alloy material loss can be reduced, and the production cost can be reduced. The alloy has good rust-proof anti-corrosion properties after nickel, chrome, zirconium and other elements are added into the alloy, the alloy can be subjected to composite rolling to form the hot double metal strip product, and the property meets the using requirements of temperature controller users.

Description

technical field [0001] The invention relates to a method for preparing an anti-rust and corrosion-resistant iron-nickel alloy strip, belonging to the technical field of alloy material preparation. Background technique [0002] In recent years, household and industrial electrical products have been updated and technological progress has been rapid, and the requirements for electrical materials are also getting higher and higher. Especially in some special application environments, when using thermal bimetallic materials as temperature control elements, in addition to requiring stable quality and good consistency in the internal operating characteristics, higher requirements are also put forward for the surface quality of the material, such as anti-corrosion and corrosion resistance. , In recent years, countries have two different approaches in the development of anti-rust and corrosion-resistant thermal bimetals. One is to use a corrosion-resistant alloy as the component lay...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/50C22C38/04C22C38/02C22C33/04C21D1/26C21D8/02C21D1/74
CPCC21D1/26C21D1/74C21D8/0226C21D8/0247C22C33/04C22C38/02C22C38/04C22C38/50
Inventor 刘志坚陈远星何坤宏
Owner SOUTH CHINA AGRI UNIV
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