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A kind of as-cast non-magnetic austenitic stainless steel and preparation method thereof

A technology of austenitic stainless steel and magnetic austenite, which is applied in the field of as-cast non-magnetic austenitic stainless steel and its preparation, can solve the problems of complex alloy composition, difficulty in popularization, and unspecified relative magnetic permeability, etc., to achieve improved Economic benefits, save time-consuming, and reduce the effect of relative magnetic permeability

Active Publication Date: 2021-06-18
襄阳市立强机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Regarding the preparation of non-magnetic austenitic stainless steel, the relevant patent results have problems such as too complex alloy composition and expensive melting equipment, which are not easy to promote, and there is no specific relative magnetic permeability.

Method used

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  • A kind of as-cast non-magnetic austenitic stainless steel and preparation method thereof
  • A kind of as-cast non-magnetic austenitic stainless steel and preparation method thereof
  • A kind of as-cast non-magnetic austenitic stainless steel and preparation method thereof

Examples

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Embodiment 1

[0034] The invention provides a cast non-magnetic austenitic stainless steel, comprising the following components and their mass percentages: C: 0.0347%, Si: 0.290%, Mn: 1.50%, P: 0.045%, S: 0.0063%, Cr : 18.39%, Ni: 9.60%, Mo: 0.0387%, Fe: 69.6903%.

[0035] A preparation method of as-cast non-magnetic austenitic stainless steel (melting in a 150kg intermediate frequency induction furnace), comprising the following steps (percentages are mass fractions):

[0036] (1) Add ordinary austenitic stainless steel scrap, die head material, industrial pure iron and nickel plate whose chemical composition meets the requirements;

[0037] (2) Add required ferromanganese when the molten steel temperature reaches 1560°C;

[0038] (3) Add a deoxidizer to deoxidize at a temperature of 1580°C;

[0039] (4) Sampling under the above-mentioned temperature carries out compositional analysis of molten steel, and correspondingly adjusts, and makes the mass percent of described each element be in...

Embodiment 2

[0045] The invention provides a cast non-magnetic austenitic stainless steel, comprising the following components and their mass percentages: C: 0.0335%, Si: 0.251%, Mn: 1.52%, P: 0.040%, S: 0.0048%, Cr : 18.62%, Ni: 9.80%, Mo: 0.0426%, Fe: 69.6881%.

[0046] A preparation method of as-cast non-magnetic austenitic stainless steel (melting in a 150kg intermediate frequency induction furnace), comprising the following steps (percentages are mass fractions):

[0047] (1) Add ordinary austenitic stainless steel scrap, die head material, industrial pure iron and nickel plate whose chemical composition meets the requirements;

[0048] (2) Add required ferromanganese when the molten steel temperature reaches 1560°C;

[0049] (3) Add a deoxidizer to deoxidize at a temperature of 1580°C;

[0050] (4) Sampling under the above-mentioned temperature carries out compositional analysis of molten steel, and correspondingly adjusts, and makes the mass percent of described each element be in d...

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Abstract

The invention provides a cast non-magnetic austenitic stainless steel, which comprises the following components and their mass percentages: C: 0.03%-0.05%, Si: 0.20%-0.30%, Mn: 1.50%-1.60%, P≤0.045 %, S≤0.03%, Cr: 18.0%-18.5%, Ni: 9.5%-10.0%, Mo≤0.05%, and the balance is Fe. The manufacturing method includes melting in an intermediate frequency induction furnace and investment casting. The advantage is that the relative magnetic permeability of the prepared austenitic stainless steel μ r is 1.01, which can meet the requirements of non-magnetic materials in the cast state (μ r ≤1.02), and has excellent mechanical properties and corrosion resistance, and the cost is low.

Description

technical field [0001] The invention relates to a cast non-magnetic austenitic stainless steel and a preparation method thereof, belonging to the technical field of stainless steel materials. Background technique [0002] Austenitic stainless steel has good mechanical properties, corrosion resistance and easy cold and hot forming properties, and has been widely used in chemical, petrochemical, aerospace, energy, transportation, biomedicine and other industries. With more and more fields of application of austenitic stainless steel, according to the different needs of various industries, it is necessary to study austenitic stainless steel materials that meet different use requirements. [0003] While many industries require the corrosion resistance of materials, they also put forward related requirements for other aspects of performance such as relative magnetic permeability. For example, the nuclear power industry requires the relative magnetic permeability μ of raw materia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/58C22C38/44C22C33/06
CPCC22C33/06C22C38/02C22C38/44C22C38/58
Inventor 陈涛范晓明王信伟李嘉臻文红艳
Owner 襄阳市立强机械有限公司