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Austenitic stainless steel with excellent polishing performance and manufacturing method thereof

A technology of austenitic stainless steel and manufacturing method, applied in the field of austenitic stainless steel and its manufacturing, to achieve the effects of improving plasticity and cutting performance, improving polishing performance, and improving surface quality

Active Publication Date: 2014-10-22
BAOSTEEL DESHENG STAINLESS STEEL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] In view of the main problems existing in the current stainless steel polishing, the purpose of the present invention is to provide an austenitic stainless steel with excellent polishing performance and its manufacturing method, so that the surface of the polished stainless steel has no defects and the decorative effect is better

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  • Austenitic stainless steel with excellent polishing performance and manufacturing method thereof
  • Austenitic stainless steel with excellent polishing performance and manufacturing method thereof

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Embodiment Construction

[0032] The present invention will be further described below by embodiment.

[0033] Table 1 is the chemical composition of the examples of the present invention, Table 2 is the process control points of the examples of the present invention, and the comparative example is conventional 304 stainless steel.

[0034] Using low-aluminum hot metal and stainless steel scrap as the main raw materials, it is smelted into conventional 304 stainless steel by electric furnace-AOD, in which the Cu content is controlled to 0.8%, and the deoxidizer in AOD is ferrosilicon; after entering the refining furnace, limestone is used to remake Slag, control the alkalinity at 1.8; in the later stage of refining, add S iron to adjust the S content of the molten steel to 0.003%, and blow argon gas to stir strongly; Protect the molten steel to prevent secondary oxidation, and control the oxygen level at 25ppm; use new rolls to roll the slab after heating, and do not remove phosphorus during the rollin...

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Abstract

The invention relates to an austenitic stainless steel with excellent polishing performance and a manufacturing method thereof. The austenitic stainless steel comprises the following components by weight: 0.03-0.1% of C, 0.3-1.0% of Si, 0.8-2% of Mn, 0-0.045% of P, 0.003-0.008% of S, 16-20% of Cr, 7-12% of Ni, 0.4-2.0% of Cu, 0-0.08% of N, and the balance Fe and unavoidable impurities. According to the invention, by controlling a proper amount of S and adding a small amount of Cu, the plasticity and cutting performance of the matrix are improved, thus being in favor of improving the polishing performance; the intake of Al in raw materials is controlled, and an Al-free deoxidant is employed, thus effectively reducing the generation probability of hard type inclusions; in addition, by controlling a suitable basicity in the smelting process, inevitable hard type inclusions are modified into plastic inclusions, and then through settling, Ar gas stirring and other measures, large inclusions can be removed, thereby effectively purifying the molten steel and improving the inner quality of steel; and non-dephosphorization rolling, a corrosive groove free pickling surface and an appropriate flattening process effectively enhance the final surface quality.

Description

technical field [0001] The invention relates to austenitic stainless steel and a manufacturing method thereof, in particular to an austenitic stainless steel with excellent polishing performance and a manufacturing method thereof. Background technique [0002] With the improvement of people's living standards, more and more industries such as construction / decoration / food hygiene / electronics have adopted stainless steel bright panels and mirror panels, and higher requirements have been placed on the surface quality of materials. 18-8 stainless steel is 304 austenitic stainless steel, because of its excellent corrosion resistance / heat resistance / machinability and other comprehensive properties, it has a wide range of uses and occupies a high market share in stainless steel polishing products. The steel generally used in the above fields is usually 2B or BA cold-rolled plate, or a mirror plate made by polishing on this basis, or a ground plate made by grinding. 2B plate refers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C22C38/42C22C33/04
Inventor 王如萌邵世杰黄俊霞江来珠
Owner BAOSTEEL DESHENG STAINLESS STEEL
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