A kind of preparation method of tin-containing ferritic stainless steel thin strip of reverse segregation tin
A technology of tin ferrite and reverse segregation of tin, which is applied in the field of preparation of tin-containing ferritic stainless steel strips, to achieve the effects of improving stability and regeneration ability, enhancing product competitiveness, and reducing price fluctuations
Active Publication Date: 2011-12-14
NORTHEASTERN UNIV
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Problems solved by technology
Aiming at the problems existing in the existing ferritic stainless steel, the present invention provides a method for preparing a tin-containing ferritic stainless steel strip with reverse segregation tin, and the tin-containing ferritic stainless steel strip with reverse segregation tin is obtained by the method of the present invention. strip, which significantly improves the corrosion resistance of thin strips and helps reduce the need for rare metals such as Mo, Cu, Ni and Cr that have improved matrix corrosion resistance
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Abstract
The invention relates to the technical field of ferrite stainless steel thin tapes, in particular to a method for preparing a ferrite stainless steel thin tape containing inversion segregation stannum. The method comprises the following steps of: smelting ferrite stainless steel which contains 0.1 to 0.8 weight percent of stannum and serves as a raw material in a medium frequency induction furnace in a high vacuum environment to obtain molten steel; casting and rolling by using double-roller thin tape casting and rolling equipment to obtain ferrite stainless steel tape blank which contains the inversion segregation stannum and has the thickness of between 1.0 and 3.2 millimeters, wherein the pouring temperature is between 1,550 and 1,640 DEG C, the speed of casting and rolling is between 2 and 80 meters per minute, and a preset gap between rollers is between 0.0 and 2.2 millimeters; performing follow-up rolling and annealing to finally obtain the ferrite stainless steel thin tape containing the inversion segregation stannum. By the ferrite stainless steel thin tape containing the inversion segregation stannum, the strength and the plastic performance of the thin tape are ensured, the corrosion resistant performance of the thin tape is greatly improved, the production cost is stabilized and reduced, and rare metal resources are saved.
Description
technical field [0001] The invention relates to the technical field of preparation of ferritic stainless steel thin strips, in particular to a method for preparing tin-containing ferritic stainless steel thin strips of reverse segregated tin. Background technique The chromium content of ferritic stainless steel is 11-30wt%. It is a stainless steel with a body-centered cubic crystal structure and a ferrite-based structure. Ferritic stainless steel has excellent corrosion resistance, low cold hardening tendency, high thermal conductivity, small linear expansion coefficient, etc., but at the same time has a large tendency to resist intergranular corrosion, high brittle transition temperature, low toughness and poor cold forming performance, etc. shortcoming. With the great progress of iron and steel smelting technology, the industrialization of ultra-purification (C+N≤150ppm) technology and the addition of stabilizing elements Nb and Ti have reduced the content of solid solu...
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Login to View More IPC IPC(8): B22D11/06C22C38/28
Inventor 刘振宇高飞李成刚
Owner NORTHEASTERN UNIV