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Ferrite stainless steel for buildings and preparation method thereof

A manufacturing method and ferrite technology, applied in manufacturing tools, temperature control, elongation control, etc., can solve the problems of easy aging and fading of coatings, large thermal expansion coefficient, easy to rust, etc., and reduce gloss and reflectivity. , the effect of low brittle transition temperature and low cost

Active Publication Date: 2011-11-09
BAOSTEEL DESHENG STAINLESS STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coating of color-coated panels is prone to aging and fading during long-term service, while SUS304 or SUS316L steel is prone to deformation due to its large thermal expansion coefficient when used on the roof of large-span buildings near the sea, and is prone to deformation in a short period of time. Rust occurs

Method used

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  • Ferrite stainless steel for buildings and preparation method thereof
  • Ferrite stainless steel for buildings and preparation method thereof
  • Ferrite stainless steel for buildings and preparation method thereof

Examples

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Embodiment Construction

[0036] The ferritic stainless steel for buildings and its manufacturing method according to the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

[0037] Table 1 is the mass percentage distribution of each chemical element in Examples 1-11 (the balance is Fe and other unavoidable impurities).

[0038] C

Si

mn

P

S

Cr

Mo

Nb

Ti

N

Example 1

0.010

0.16

0.14

0.014

0.008

22.41

1.19

0.35

0.21

0.014

Example 2

0.008

0.18

0.17

0.022

0.001

22.4

1.37

0.39

--

0.010

Example 3

0.008

0.17

0.22

0.029

0.002

22.15

1.48

0.42

--

0.015

Example 4

0.010

0.23

0.16

0.022

0.003

22.75

1.55

0.40

--

0.012

Example 5...

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PUM

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Abstract

The invention discloses ferrite stainless steel for buildings. The ferrite stainless steel comprises the following chemical elements in percentage by mass: less than or equal to 0.015 percent of C, less than or equal to 0.020 percent of N, less than or equal to 0.5 percent of Si, less than or equal to 0.5 percent of Mn, less than or equal to 0.035 percent of P, less than or equal to 0.010 percentof S, more than 21.5 percent and less than 23.5 percent of Cr, more than 1.0 percent and less than 3.0 percent of Mo, more than or equal to 0.35 percent and less than or equal to 0.6 percent of Nb, less than or equal to 0.2 percent of Ti and the balance of Fe and other inevitable impurities, wherein (Nb+Ti) is more than or equal to 16(C+N) and less than or equal to 0.6 percent. Correspondingly, the invention further provides a method for preparing the stainless steel for buildings. Compared with the conventional stainless steel for buildings, the ferrite stainless steel has the advantages of excellent corrosion-resistant effect, low surface gloss, good scattered reflection effect, difficulty in deformation of steel plates, low cost and very good application effect.

Description

technical field [0001] The invention relates to stainless steel and a smelting method thereof in the field of metallurgy, in particular to a corrosion-resistant stainless steel and a manufacturing method thereof. Background technique [0002] With the development of coastal areas and the development of cities, stainless steel has begun to be used as building roofs and curtain wall decoration materials in some landmark buildings such as museums, exhibition halls and sports facilities. The roofs of these large buildings serving in the sea wind erosion environment not only have high requirements for decoration, but also have high requirements for the life of building materials. Stainless steel building materials are required to guarantee a 50-year life in harsh environments, and they do not need to be used for a long time. repair. At present, the steel used in building roof decoration materials is almost all carbon steel color-coated plates, or austenitic SUS304 and SUS316L st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/28C22C38/26B22D11/114C21D9/52C23G1/08B21B37/74B21B37/56
Inventor 董文卜马立袁龙李实方徽源钱春风
Owner BAOSTEEL DESHENG STAINLESS STEEL
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