Induction heatable stainless steel sheet having excellent corrosion resistance and method of manufacturing the same
A stainless steel plate, corrosion-resistant technology, applied in the direction of manufacturing tools, heat treatment furnaces, metal rolling, etc., can solve the problems of high processing cost, increased bonding process, complexity, etc., and achieve the effect of excellent corrosion resistance
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example 1
[0072] Prepare 90 tons of molten steel with the composition described in Table 1 for use figure 1 The twin-roll belt casting machine shown is used for casting to produce thin steel plates. In this case, the casting width is 1300 mm and the casting thickness is 4.0 mm.
[0073] As described above, immediately after the steel sheet is cast, the steel sheet is hot rolled at a high temperature to continuously manufacture a hot rolled sheet having a thickness of about 2.5 mm. The hot-rolled sheet was cold-rolled at a reduction ratio of 50% to 70% and annealed at a temperature of 1150°C.
[0074] Figure 2A and Figure 2B is a photograph in which microstructures of representative examples of conventional austenitic stainless steel (SUS 304 stainless steel) and ferritic stainless steel (SUS 430 stainless steel) are shown by way of example.
[0075] image 3 is a picture in which the microstructure of Inventive Example 1 in Table 2 is visible, Figure 4 The relative magnetic per...
example 2
[0094] Steel sheets were produced under the same conditions as Inventive Example 1 of Example 1 except that the content of ferrite was changed, and changes in the content of ferrite and relative magnetic permeability were investigated. exist Image 6 The results are shown in . In addition, induction heating characteristics with respect to relative magnetic permeability were investigated.
[0095] like Image 6 As shown, when the content of ferrite is 30% to 70%, 20μ r to 80μ r relative magnetic permeability. As a result of the research on the induction heating characteristics of the relative magnetic permeability, when the relative magnetic permeability is 20μ r and 80μ r Between, the induction heating characteristic is good. When the relative permeability is less than 20μ r When , the induction heating characteristic is weak, so that the induction heating is not efficient. When the relative permeability exceeds 80μ r , the induction heating properties are too high a...
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Abstract
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