WO2011122513A1 - 表面光沢と耐銹性に優れたフェライト系ステンレス鋼板およびその製造方法 - Google Patents
表面光沢と耐銹性に優れたフェライト系ステンレス鋼板およびその製造方法 Download PDFInfo
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- WO2011122513A1 WO2011122513A1 PCT/JP2011/057512 JP2011057512W WO2011122513A1 WO 2011122513 A1 WO2011122513 A1 WO 2011122513A1 JP 2011057512 W JP2011057512 W JP 2011057512W WO 2011122513 A1 WO2011122513 A1 WO 2011122513A1
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- stainless steel
- weather resistance
- surface gloss
- ferritic stainless
- steel sheet
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 49
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 230000007797 corrosion Effects 0.000 title description 5
- 238000005260 corrosion Methods 0.000 title description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 238000000137 annealing Methods 0.000 claims abstract description 26
- 238000005098 hot rolling Methods 0.000 claims abstract description 18
- 239000010935 stainless steel Substances 0.000 claims abstract description 12
- 238000004804 winding Methods 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 238000005097 cold rolling Methods 0.000 claims description 14
- 238000000605 extraction Methods 0.000 claims description 9
- 238000001953 recrystallisation Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000037303 wrinkles Effects 0.000 claims 1
- 229910052719 titanium Inorganic materials 0.000 abstract description 9
- 229910052758 niobium Inorganic materials 0.000 abstract description 7
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 6
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 6
- 229910052804 chromium Inorganic materials 0.000 abstract description 5
- 229910052718 tin Inorganic materials 0.000 abstract description 5
- 229910052748 manganese Inorganic materials 0.000 abstract description 3
- 229910052710 silicon Inorganic materials 0.000 abstract description 3
- 229910052717 sulfur Inorganic materials 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 17
- 230000007423 decrease Effects 0.000 description 11
- 230000003647 oxidation Effects 0.000 description 9
- 238000007254 oxidation reaction Methods 0.000 description 9
- 238000007670 refining Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000005554 pickling Methods 0.000 description 6
- 230000000087 stabilizing effect Effects 0.000 description 6
- 239000010960 cold rolled steel Substances 0.000 description 5
- 238000005868 electrolysis reaction Methods 0.000 description 4
- 238000007654 immersion Methods 0.000 description 4
- 229910052750 molybdenum Inorganic materials 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- DXHPZXWIPWDXHJ-UHFFFAOYSA-N carbon monosulfide Chemical compound [S+]#[C-] DXHPZXWIPWDXHJ-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 235000013619 trace mineral Nutrition 0.000 description 3
- 239000011573 trace mineral Substances 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 159000000011 group IA salts Chemical class 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 206010039509 Scab Diseases 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
Definitions
- the present invention relates to an alloy-saving ferritic stainless steel sheet excellent in surface gloss and weather resistance and a method for producing the same.
- Ferritic stainless steel sheets are widely used in fields that require weather resistance and surface quality in indoor environments such as home appliances and kitchen equipment.
- Examples of these ferritic stainless steel plates include SUS430LX and SUS430J1L in JIS standards.
- Non-Patent Document 1 describes typical examples of SUS430LX and SUS430J1L, which have excellent weather resistance. These ferritic stainless steels reduce C and N, Cr: 16 to 20%, Nb: 0.3 to 0.6%, and addition of Ti, trace amounts of Cu and Mo, resulting in pitting and rusting Deterioration of surface properties is prevented.
- Patent Document 1 discloses a method for producing a cold-rolled steel strip excellent in surface gloss by controlling the amount of oxide scale generated during annealing in ferritic stainless steel to which Ti, Nb, etc. are added.
- Patent Document 2 discloses a method for descaling a cold-rolled steel strip, a method for producing a stainless cold-rolled steel strip excellent in gloss and corrosion resistance that defines a neutral salt electrolysis-nitric acid electrolysis process, and Patent Document 3 describes a cold A method for producing a high-gloss stainless steel strip in which the roughness and lubrication conditions of a rolling work roll are controlled is disclosed.
- the above-mentioned ferritic stainless steel sheet is more economical than an austenitic stainless steel sheet containing a large amount of Ni, whose price has been increasing rapidly in recent years.
- SUS430LX and SUS430J1L have sufficient economic efficiency in the future against the backdrop of price fluctuations of Cr, which is a constituent element of stainless steel, and soaring Nb, which is a rare element.
- Patent Documents 4 and 5 disclose ferritic stainless steels that are positively added with P to improve weather resistance, weather resistance, and crevice corrosion resistance.
- Patent Document 4 is a high Cr, P-added ferritic stainless steel with Cr: more than 20% to 40% and P: more than 0.06% to 0.2% or less.
- Patent Document 5 is a P-added ferritic stainless steel having Cr: 11% to less than 20% and P: more than 0.04% to 0.2% or less.
- P is a factor that impedes manufacturability, workability, and weldability.
- an object of the present invention is to provide an alloy-saving ferritic stainless steel sheet and a method for producing the same.
- a Cr amount of 12% or more is required to exhibit the effect of improving weather resistance by adding a small amount of Sn.
- it is effective to reduce the C, N, Si, Mn, P, and S and to add a stabilizing element such as Nb or Ti to maintain the soundness of the passive film composed of Cr and a small amount of Sn. It is.
- Nb is an effective stabilizing element that exhibits an effect of improving surface gloss in addition to weather resistance. In a small amount of Sn-added steel, the effect appears from 0.05%. However, when 0.3% or more is added, the surface gloss due to the oxide scale is lowered due to the increase in the hot rolling heating temperature and the annealing temperature of the steel material.
- Ti In addition to the action as a stabilizing element that fixes C and N, Ti generates Ti-based carbon sulfide (for example, Ti 4 C 2 S 2 ) during hot rolling and becomes a starting point. Suppresses the generation of MnS and CaS. In a small amount of Sn-added steel, the action starts from 0.03%. However, if added in an amount of 0.15% or more, the surface gloss is lowered due to the haze caused by inclusions and the concentration of Ti in the oxide film.
- Ti-based carbon sulfide for example, Ti 4 C 2 S 2
- Nb and Ti in the above-described small amount of Sn-added steel are manifested when they are added together in the range of 1 ⁇ Nb / Ti ⁇ 3.5.
- Nb which has a large effect of improving the surface gloss, is mainly added to suppress the starting point and maintain the soundness of the passive film. It has been found that the combined addition with Ti is effective.
- the extraction temperature after hot-rolling heating ensures the amount of scale generation for removing inclusions on the slab surface layer that induces glazing from the viewpoint of improving surface gloss, and Ti-based carbon sulfide (for example, Ti 4 C 2 S 2 ) is generated, and the temperature is set to suppress the generation of MnS and CaS as starting points.
- Ti-based carbon sulfide for example, Ti 4 C 2 S 2
- the winding after hot rolling is performed at a temperature that suppresses surface wrinkling during winding and suppresses internal oxides and grain boundary oxidation that cause a decrease in gloss.
- a temperature that suppresses surface wrinkling during winding and suppresses internal oxides and grain boundary oxidation that cause a decrease in gloss In a small amount of Sn-added steel with a Cr content of less than 16%, it is effective to set the temperature to 500 to 700 ° C.
- the annealing temperature is 980 ° C. or less from the viewpoint of ensuring gloss.
- the gist of the present invention based on the above findings (a) to (g) is as follows.
- the stainless steel plate is further in mass%, Ni: 0.01 to 0.5%, Cu: 0.01 to 0.5%, Mo: 0.01 to 0.5%, V: 0.01 to 0.5%, Zr: 0.01 to 0.5%, Co: 0.01 to 0.5% Mg: 0.0001 to 0.005%, B: 0.0003 to 0.005%, Ca: 0.0003 to 0.005%.
- a slab of stainless steel having the steel component described in (1) or (2) above is heated and hot rolled after extraction from a heating furnace at an extraction temperature of 1080 to 1190 ° C., and the winding temperature is set to 500
- the hot-rolled sheet annealing is performed at an annealing temperature of a recrystallization temperature or higher and 1050 ° C. or lower after the hot rolling and before cold rolling, as described in (4) or (5) Of ferritic stainless steel sheet with excellent surface gloss and weather resistance.
- the surface gloss and the weather resistance are excellent, which is excellent in economic efficiency without causing an increase in alloy costs and manufacturing costs, has a weather resistance comparable to SUS430LX and SUS430J1L, and has dramatically improved the surface gloss. It is possible to obtain a remarkable effect that an alloy-saving ferritic stainless steel sheet having excellent resistance can be obtained.
- the reason for limiting the component [I] will be described below.
- C degrades weather resistance, so the upper limit of its content is 0.03%. From the viewpoint of weather resistance, the lower the content, the better.
- the upper limit is preferably 0.02%, more preferably 0.01%, and even more preferably 0.005%. Moreover, since excessive reduction leads to the increase in refining cost, the minimum of the content shall be 0.001%. In consideration of weather resistance and production cost, the lower limit is preferably 0.002%.
- Si may be added as a deoxidizing element.
- Si is a solid solution strengthening element, and the upper limit is set to 1.0% in order to suppress a decrease in workability. From the viewpoint of workability, the lower the content, the better.
- the upper limit is preferably 0.6%, more preferably 0.3%, and even more preferably 0.2%.
- the minimum of Si content shall be 0.01%.
- the lower limit is preferably 0.05%.
- the upper limit of the content is set to 1.5% from the suppression of deterioration of weather resistance. From the viewpoint of weather resistance, the lower the content, the better.
- the upper limit is preferably 1.0%, more preferably 0.3%, and even more preferably 0.2%.
- the minimum of content of Mn shall be 0.01%.
- the lower limit may be 0.05%.
- the upper limit of the content is set to 0.05% in order to suppress the decrease in manufacturability and weldability. From the viewpoint of manufacturability and weldability, the smaller the content, the better.
- the upper limit is preferably 0.04%, more preferably 0.03%.
- the lower limit of the P content is set to 0.005%. More preferably, it is good to set it as 0.01% in consideration of manufacturing cost.
- the S is an impurity element and hinders weather resistance and hot workability, so the smaller the content, the better.
- the upper limit of the S content is 0.01%.
- the content is preferably as small as possible from the viewpoint of weather resistance and hot workability, and the upper limit is preferably 0.005%, more preferably 0.003%, and even more preferably 0.002%.
- the minimum of the content shall be 0.0001%. More preferably, the content is 0.0002% in consideration of weather resistance and manufacturing cost.
- Cr is a constituent element of ferritic stainless steel and an essential element for ensuring weather resistance.
- the lower limit is 12%.
- the upper limit is 16% from the viewpoint of economy compared with SUS430LX. Considering weather resistance and Sn addition amount, it is preferably 13 to 15%.
- the upper limit is made 0.03%. From the viewpoint of weather resistance, the lower the content, the better.
- the upper limit is preferably 0.02%, more preferably 0.012%.
- a minimum is made into 0.001%. More preferably, the content is 0.005% in consideration of weather resistance and manufacturing cost.
- Nb is an essential element for improving the surface gloss in addition to improving the weather resistance in the trace amount Sn-added steel of the present invention.
- the above effect is manifested from 0.05% or more.
- excessive addition raises the recrystallization temperature of the steel and conversely causes a reduction in surface gloss. Therefore, the upper limit is made 0.3%.
- the content is made 0.1 to 0.2%.
- Ti is an essential element for improving weather resistance in addition to the action as a stabilizing element for fixing C and N.
- the above effect is manifested from 0.03%.
- excessive addition leads to a decrease in surface gloss due to the haze caused by inclusions and Ti concentration in the oxide film. Therefore, the upper limit is made 0.15%.
- the content is made 0.05 to 0.1%.
- the lower limit of its content was set to 0.005%.
- the upper limit of the Al content is set to 0.5%. From the viewpoint of workability, toughness and weldability, the lower the content, the better.
- the upper limit is preferably 0.1%, more preferably 0.05%, and even more preferably 0.03%.
- the lower limit of the content is more preferably 0.01%.
- Sn is an indispensable element for ensuring the target weather resistance of the present invention without resorting to alloying of Cr and Mo and addition of rare elements such as Ni and Co.
- the lower limit of the Sn content was set to 0.01%.
- it is preferably 0.05% or more, more preferably 0.1% or more.
- the upper limit was made 1.0%.
- the upper limit of the content is 0.5% or less, more preferably 0.3%, and still more preferably 0.2%.
- Nb and Ti are added in the above-described range, and the addition amount satisfies 1 ⁇ Nb / Ti ⁇ 3.5 in order to obtain the target weather resistance and surface gloss of the present invention.
- Nb / Ti ⁇ 1 the surface gloss due to Ti inclusions and Ti oxides is reduced.
- 3.5 ⁇ Nb / Ti the surface gloss is reduced due to internal oxidation or grain boundary oxidation due to an increase in hot rolling heating temperature and annealing temperature.
- a more preferable range is 1.5 ⁇ Nb / Ti ⁇ 3 in consideration of the target weather resistance and surface gloss of the present invention.
- Ni, Cu, Mo, V, Zr, and Co are elements that improve weather resistance by a synergistic effect with Sn, and may be added as necessary.
- the effect is 0.01% or more, preferably 0.02% or more. More preferably, it is made 0.05% or more at which the effect expression becomes remarkable. However, if it exceeds 0.5%, the material cost increases and the surface gloss decreases, so the upper limit of each content is set to 0.5%. Since these elements are rare, when added, the preferable range of Ni and Cu is 0.1 to 0.4%, and the preferable range of Mo is 0.1 to 0.3%. A preferable range of V, Zr, and Co is 0.02 to 0.3%.
- Mg forms Mg oxide together with Al in molten steel and acts as a deoxidizer, and also acts as a crystallization nucleus of TiN.
- TiN becomes a solidification nucleus of the ferrite phase in the solidification process, and by facilitating crystallization of TiN, the ferrite phase can be finely formed during solidification.
- the content is made 0.0001% or more to express these effects. However, if it exceeds 0.005%, manufacturability deteriorates, so the upper limit is made 0.005%.
- the content is made 0.0003 to 0.002%.
- B is an element that improves hot workability and secondary workability, and since addition to ferritic stainless steel is effective, it may be added as necessary. When adding, it is made 0.0003% or more to express these effects. However, excessive addition causes a decrease in elongation, so the upper limit is made 0.005%. Preferably, the content is made 0.0005 to 0.002% in consideration of material cost and workability.
- Ca is an element that improves hot workability and steel cleanliness, and may be added as necessary. When adding, it is made 0.0003% or more to express these effects. However, excessive addition leads to a decrease in manufacturability and a decrease in corrosion resistance due to water-soluble inclusions such as CaS, so the upper limit is made 0.005%. Preferably, the content is made 0.0003 to 0.0015% in consideration of manufacturability and weather resistance.
- a steel slab having the component shown in [I] above is inserted into a hot rolling furnace and heated.
- the extraction temperature of the slab from the hot-rolling furnace is set to 1080 ° C. or more in order to secure a scale generation amount for removing inclusions on the surface of the slab that induces scabs.
- the scale generation amount may be 0.2 mm or more in terms of scale thickness.
- the upper limit of the extraction temperature is set to 1190 ° C. in order to stabilize the Ti-based carbon sulfide (for example, Ti 4 C 2 S 2 ) by suppressing the generation of MnS and CaS as starting points.
- the extraction temperature is preferably 1140 to 1180 ° C.
- the reason for setting the winding temperature after hot rolling to 500 ° C. or more is to suppress surface flaws during winding.
- the hot-rolled steel strip causes poor shape of the hot-rolled steel strip, and induces surface flaws when the coil is unfolded or passed.
- the reason why the coiling temperature is set to 700 ° C. or lower is to suppress the growth of internal oxides and grain boundary oxidation that cause a reduction in gloss. If the temperature exceeds 700 ° C., precipitates containing Ti and P are likely to precipitate, which may lead to a decrease in weather resistance.
- the winding temperature is preferably 550 to 650 ° C.
- hot-rolled sheet annealing may be performed before cold rolling. Further, the cold rolling may be performed once or twice or more. However, when performing cold rolling twice or more, intermediate annealing is performed between each cold rolling.
- the annealing temperature is preferably set to 1050 ° C. or lower in order to suppress the growth of internal oxides and grain boundary oxidation that cause a decrease in gloss.
- the lower limit of the annealing temperature is preferably the steel recrystallization temperature (about 850 ° C.).
- the recrystallization temperature is a temperature at which new crystal grains having no distortion are formed from a rolled processed structure. The same temperature range is preferable when performing the intermediate annealing at the time of cold rolling.
- the conditions for cold rolling are not particularly limited.
- the finish annealing after cold rolling is preferably 980 ° C. or lower in consideration of surface gloss.
- the lower the annealing temperature the more the internal oxidation and grain boundary oxidation are suppressed, which is advantageous for improving the surface gloss.
- the lower limit is preferably set to 850 ° C. which is the recrystallization temperature.
- the pickling method is not particularly defined, and there is no problem even if it is carried out by a method commonly used in industry. For example, there are alkaline salt bath immersion + electrolytic pickling + nitric hydrofluoric acid immersion, alkaline salt bath immersion + electrolytic pickling, and the electrolytic pickling may be performed by neutral salt electrolysis or nitric acid electrolysis.
- a ferritic stainless steel having the components shown in Table 1 is melted and hot rolled at an extraction temperature of 1150 to 1220 ° C., and a hot rolled steel sheet having a coil thickness of 4.0 to 6.0 mm at a winding temperature of 480 to 750 ° C. did.
- the hot-rolled steel sheet was subjected to hot-rolled sheet annealing or omitted, and cold-rolled steel sheet having a thickness of 0.4 to 1.0 mm was manufactured by performing cold rolling twice or once with intermediate annealing.
- Each of the obtained cold-rolled steel sheets was finish-annealed at a temperature of 870 to 1020 ° C. at which recrystallization was completed, subjected to a regular pickling treatment, and the surface specification was No.
- the common pickling treatment may be, for example, a neutral salt electrolysis (50 ° C., Na 2 SO 4 ) treatment after immersion in an alkali salt bath (430 ° C.).
- the components of the steel were also carried out in the range specified in the present invention and other cases.
- the manufacturing conditions were the same as those defined in the present invention and other conditions.
- SUS430LX (17% Cr-0.3% Ti) was used as a comparative steel.
- the surface glossiness was measured by measuring the glossiness 45 ° Gloss value (Gs45 °) defined in JIS Z 8741 in the rolling direction (0 °) and the perpendicular direction (90 °) of the steel sheet.
- the weather resistance is No.
- Steel sheet samples (plate thickness x 100 mm square) on the 2B surface and # 600 polished surface were prepared and immersed in a 168 hr in 0.5% NaCl aqueous solution at 80 ° C. and a salt spray test in accordance with JIS Z 2371 (168 hr continuous spray test) It was evaluated by.
- the degree of rusting is “ ⁇ ” when it is good without stains or spots, “ ⁇ ” when it is comparable and inferior, ".
- Table 2 summarizes the test results.
- Test Nos. 8, 9, 15, and 16 have components specified in the present invention, but deviate from the manufacturing method (extraction temperature, winding temperature) according to the present invention. These steel sheets satisfied the target weather resistance and glossiness according to the present invention, but the glossiness was slightly inferior to those of the other examples of the present invention.
- Test Nos. 22 to 29 are not included in the components of the present invention, although the production method defined in the present invention is being carried out. These steel sheets could not have both the surface gloss and weather resistance targeted by the present invention.
- 1 and 2 show the relationship between the Nb / Ti amount and the surface glossiness in the examples.
- the component range specified in the present invention is 1 ⁇ Nb It is important that /Ti ⁇ 3.5.
- the surface gloss and the weather resistance are excellent, which is excellent in economic efficiency without causing an increase in alloy costs and manufacturing costs, has a weather resistance comparable to SUS430LX and SUS430J1L, and has dramatically improved the surface gloss. It is possible to obtain an alloy-saving ferritic stainless steel with excellent resistance.
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Abstract
Description
そこで本発明は、省合金型のフェライト系ステンレス鋼板において、Cr量16%未満でSUS430LXやSUS430J1Lと遜色ない耐銹性を有し、表面光沢を飛躍的に向上させることを課題とし、これを実現化した省合金型のフェライト系ステンレス鋼板とその製造方法を提供することを目的とする。
C:0.001~0.03%、
Si:0.01~1.0%、
Mn:0.01~1.5%、
P:0.005~0.05%、
S:0.0001~0.01%、
Cr:12~16%、
N:0.001~0.03%、
Nb:0.05~0.3%、
Ti:0.03~0.15%、
Al:0.005~0.5%、
Sn:0.01~1.0%、
残部がFeおよび不可避的不純物からなり、
1≦Nb/Ti≦3.5の関係を満たすことを特徴とする表面光沢と耐銹性に優れたフェライト系ステンレス鋼板。
Ni:0.01~0.5%、
Cu:0.01~0.5%、
Mo:0.01~0.5%、
V:0.01~0.5%、
Zr:0.01~0.5%、
Co:0.01~0.5%、
Mg:0.0001~0.005%、
B:0.0003~0.005%、
Ca:0.0003~0.005%
の1種または2種以上含有していることを特徴とする(1)に記載の表面光沢と耐銹性に優れたフェライト系ステンレス鋼板。
Cは、耐銹性を劣化させるため、その含有量の上限を0.03%とする。耐銹性の観点からその含有量は少ないほど良く、その上限は、好ましくは0.02%、より好ましくは0.01%、さらに好ましくは0.005%とするとよい。また、過度の低減は精錬コストの増加に繋がるため、その含有量の下限を0.001%とする。耐銹性や製造コストを考慮すると、その下限は、好ましくは0.002%とするとよい。
前記[I]項で示した成分を有し、SUS430LXやSUS430J1Lと遜色ない耐銹性ならびにそれを凌駕する表面光沢を得るために必要な製造方法の一例を示す。
熱延板焼鈍を実施する場合は、光沢低下を招く内部酸化物や粒界酸化の成長を抑制するため、焼鈍温度は1050℃以下とすることが好ましい。また焼鈍温度の下限は鋼の再結晶温度(850℃程度)とすることが好ましい。ここで再結晶温度とは、圧延された加工組織から歪の無い新しい結晶粒が形成される温度のことである。
冷間圧延時の中間焼鈍を実施する場合も同様の温度範囲とすることが好ましい。
鋼の成分は、本発明で規定する範囲とそれ以外でも実施した。製造条件は、本発明で限定する条件とそれ以外でも実施した。比較鋼には、SUS430LX(17%Cr−0.3%Ti)を使用した。
Claims (6)
- 質量%にて、
C:0.001~0.03%、
Si:0.01~1.0%、
Mn:0.01~1.5%、
P:0.005~0.05%、
S:0.0001~0.01%、
Cr:12~16%、
N:0.001~0.03%、
Nb:0.05~0.3%、
Ti:0.03~0.15%、
Al:0.005~0.5%、
Sn:0.01~1.0%、
残部がFeおよび不可避的不純物からなり、
1≦Nb/Ti≦3.5の関係を満たすことを特徴とする表面光沢と耐銹性に優れたフェライト系ステンレス鋼板。 - 前記ステンレス鋼板が、さらに質量%にて、
Ni:0.01~0.5%、
Cu:0.01~0.5%、
Mo:0.01~0.5%、
V:0.01~0.5%、
Zr:0.01~0.5%、
Co:0.01~0.5%、
Mg:0.0001~0.005%、
B:0.0003~0.005%、
Ca:0.0003~0.005%
の1種または2種以上含有していることを特徴とする請求項1に記載の表面光沢と耐銹性に優れたフェライト系ステンレス鋼板。 - 請求項1または2に記載の鋼成分を有するステンレス鋼のスラブを加熱して、抽出温度1080~1190℃で加熱炉から抽出後熱間圧延をし、巻取り温度を500~700℃で巻き取ることを特徴とする表面光沢と耐銹性に優れたフェライト系ステンレス鋼板の製造方法。
- 前記熱間圧延の巻取り後、冷間圧延を行い、その後、850~980℃で仕上げ焼鈍を行うことを特徴とする請求項3に記載の表面光沢と耐銹性に優れたフェライト系ステンレス鋼板の製造方法。
- 前記熱間圧延の巻取り後、中間焼鈍を挟む2回以上の冷間圧延を行い、その後、850~980℃で仕上げ焼鈍を行うことを特徴とする請求項3に記載の表面光沢と耐銹性に優れたフェライト系ステンレス鋼板の製造方法。
- 前記熱間圧延の巻取り後、冷間圧延の前に、熱延板焼鈍を再結晶温度以上1050℃以下の焼鈍温度で行うことを特徴とする請求項4または5に記載の表面光沢と耐銹性に優れたフェライト系ステンレス鋼板の製造方法。
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Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61288021A (ja) | 1985-06-13 | 1986-12-18 | Kawasaki Steel Corp | 表面光沢に優れたフエライト系ステンレス冷延鋼帯の製造方法 |
JPH04232297A (ja) | 1990-12-28 | 1992-08-20 | Kawasaki Steel Corp | 光沢、白色度および耐食性に優れたステンレス冷延鋼帯の製造方法 |
JPH06172935A (ja) | 1992-02-25 | 1994-06-21 | Kawasaki Steel Corp | 耐候性、耐銹性に優れた高Cr,P添加フェライト系ステンレス鋼 |
JPH0734205A (ja) | 1993-05-19 | 1995-02-03 | Kawasaki Steel Corp | 耐候性、耐隙間腐食性に優れたフェライト系ステンレス鋼 |
JPH08243603A (ja) | 1995-03-07 | 1996-09-24 | Kawasaki Steel Corp | 高光沢ステンレス鋼帯の製造方法 |
JPH10280035A (ja) * | 1997-04-11 | 1998-10-20 | Nippon Steel Corp | 加工性と耐熱性に優れた高純フェライト系ステンレス熱延鋼帯の製造方法 |
JP2001288543A (ja) * | 2000-04-04 | 2001-10-19 | Nippon Steel Corp | 表面特性及び耐食性に優れたフェライト系ステンレス鋼及びその製造方法 |
JP2004060009A (ja) * | 2002-07-30 | 2004-02-26 | Nippon Steel Corp | プレス成形性に優れたフェライト系ステンレス鋼板及びその製造方法 |
JP2009174036A (ja) | 2008-01-28 | 2009-08-06 | Nippon Steel & Sumikin Stainless Steel Corp | 耐食性と加工性に優れた高純度フェライト系ステンレス鋼およびその製造方法 |
JP2010031315A (ja) * | 2008-07-28 | 2010-02-12 | Nippon Steel & Sumikin Stainless Steel Corp | 加熱後耐食性に優れた自動車排気系部材用省合金型フェライト系ステンレス鋼 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07150288A (ja) * | 1993-10-05 | 1995-06-13 | Nippon Steel Corp | 表面性状の良好なSn含有高強度熱延鋼板およびその製造方法 |
JP2001288533A (ja) * | 2000-03-31 | 2001-10-19 | Nippon Steel Corp | 溶接熱影響部の硬化および軟化が小さい鋼材およびその製造方法 |
JP4519505B2 (ja) * | 2004-04-07 | 2010-08-04 | 新日鐵住金ステンレス株式会社 | 成形性に優れるフェライト系ステンレス鋼板およびその製造方法 |
KR20080110662A (ko) * | 2006-05-09 | 2008-12-18 | 닛폰 스틸 앤드 스미킨 스테인레스 스틸 코포레이션 | 내식성이 우수한 스테인리스 강, 내간극 부식성, 성형성이 우수한 페라이트계 스테인리스 강 및 내간극 부식성이 우수한 페라이트계 스테인리스 강 |
CN101397638A (zh) * | 2007-09-25 | 2009-04-01 | 宝山钢铁股份有限公司 | 一种汽车尾气排放系统用铁素体不锈钢 |
JP5274074B2 (ja) * | 2008-03-28 | 2013-08-28 | 新日鐵住金ステンレス株式会社 | 耐酸化性に優れた耐熱性フェライト系ステンレス鋼板 |
-
2011
- 2011-03-22 WO PCT/JP2011/057512 patent/WO2011122513A1/ja active Application Filing
- 2011-03-22 KR KR1020127025734A patent/KR101536291B1/ko active IP Right Grant
- 2011-03-22 CN CN201180017606.0A patent/CN102822373B/zh active Active
- 2011-03-22 BR BR112012024625A patent/BR112012024625B1/pt active IP Right Grant
- 2011-03-22 JP JP2012508270A patent/JP5709845B2/ja active Active
- 2011-03-22 US US13/638,108 patent/US20130017116A1/en not_active Abandoned
- 2011-03-22 EP EP11762738.0A patent/EP2554701B1/en active Active
- 2011-03-22 ES ES11762738.0T patent/ES2581315T3/es active Active
- 2011-03-25 TW TW100110342A patent/TWI461547B/zh active
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61288021A (ja) | 1985-06-13 | 1986-12-18 | Kawasaki Steel Corp | 表面光沢に優れたフエライト系ステンレス冷延鋼帯の製造方法 |
JPH04232297A (ja) | 1990-12-28 | 1992-08-20 | Kawasaki Steel Corp | 光沢、白色度および耐食性に優れたステンレス冷延鋼帯の製造方法 |
JPH06172935A (ja) | 1992-02-25 | 1994-06-21 | Kawasaki Steel Corp | 耐候性、耐銹性に優れた高Cr,P添加フェライト系ステンレス鋼 |
JPH0734205A (ja) | 1993-05-19 | 1995-02-03 | Kawasaki Steel Corp | 耐候性、耐隙間腐食性に優れたフェライト系ステンレス鋼 |
JPH08243603A (ja) | 1995-03-07 | 1996-09-24 | Kawasaki Steel Corp | 高光沢ステンレス鋼帯の製造方法 |
JPH10280035A (ja) * | 1997-04-11 | 1998-10-20 | Nippon Steel Corp | 加工性と耐熱性に優れた高純フェライト系ステンレス熱延鋼帯の製造方法 |
JP2001288543A (ja) * | 2000-04-04 | 2001-10-19 | Nippon Steel Corp | 表面特性及び耐食性に優れたフェライト系ステンレス鋼及びその製造方法 |
JP2004060009A (ja) * | 2002-07-30 | 2004-02-26 | Nippon Steel Corp | プレス成形性に優れたフェライト系ステンレス鋼板及びその製造方法 |
JP2009174036A (ja) | 2008-01-28 | 2009-08-06 | Nippon Steel & Sumikin Stainless Steel Corp | 耐食性と加工性に優れた高純度フェライト系ステンレス鋼およびその製造方法 |
JP2010031315A (ja) * | 2008-07-28 | 2010-02-12 | Nippon Steel & Sumikin Stainless Steel Corp | 加熱後耐食性に優れた自動車排気系部材用省合金型フェライト系ステンレス鋼 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2554701A4 * |
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JP2013001962A (ja) * | 2011-06-16 | 2013-01-07 | Nippon Steel & Sumikin Stainless Steel Corp | 熱間加工性と耐銹性に優れたフェライト系ステンレス鋼板及びその製造方法 |
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CN104093871A (zh) * | 2012-03-30 | 2014-10-08 | 新日铁住金不锈钢株式会社 | 耐热铁素体系不锈钢冷轧钢板、冷轧基材用铁素体系不锈钢热轧钢板及其制造方法 |
US10260134B2 (en) | 2012-03-30 | 2019-04-16 | Nippon Steel & Sumikin Stainless Steel Corporation | Hot rolled ferritic stainless steel sheet for cold rolling raw material |
JP2014077202A (ja) * | 2012-09-24 | 2014-05-01 | Jfe Steel Corp | フェライト系ステンレス鋼 |
JP5590255B1 (ja) * | 2012-09-24 | 2014-09-17 | Jfeスチール株式会社 | フェライト系ステンレス鋼 |
JPWO2014069543A1 (ja) * | 2012-10-30 | 2016-09-08 | 新日鐵住金ステンレス株式会社 | 耐熱性に優れたフェライト系ステンレス鋼板 |
CN104769144A (zh) * | 2012-10-30 | 2015-07-08 | 新日铁住金不锈钢株式会社 | 耐热性优良的铁素体系不锈钢板 |
US20160053353A1 (en) * | 2013-03-27 | 2016-02-25 | Nippon Steel & Sumikin Stainless Steel Corporation | Hot-rolled ferritic stainless-steel plate, process for producing same, and steel strip |
US10385429B2 (en) | 2013-03-27 | 2019-08-20 | Nippon Steel & Sumikin Stainless Steel Corporation | Hot-rolled ferritic stainless-steel plate, process for producing same, and steel strip |
JP2016041834A (ja) * | 2014-08-14 | 2016-03-31 | Jfeスチール株式会社 | フェライト系ステンレス鋼板 |
JP2016069677A (ja) * | 2014-09-29 | 2016-05-09 | 新日鐵住金ステンレス株式会社 | 穴広げ性に優れたフェライト系ステンレス鋼鈑及びその製造方法 |
WO2016052528A1 (ja) * | 2014-09-29 | 2016-04-07 | 新日鐵住金ステンレス株式会社 | 穴拡げ性に優れたフェライト系ステンレス鋼鈑及びその製造方法 |
JP2016156072A (ja) * | 2015-02-25 | 2016-09-01 | 新日鐵住金ステンレス株式会社 | 穴拡げ性に優れたフェライト系ステンレス鋼鈑及びその製造方法 |
JP2020100866A (ja) * | 2018-12-21 | 2020-07-02 | 日鉄ステンレス株式会社 | 耐水素脆性と耐低温脆性に優れたCr系ステンレス鋼 |
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JPWO2011122513A1 (ja) | 2013-07-08 |
EP2554701A4 (en) | 2015-04-29 |
EP2554701B1 (en) | 2016-06-29 |
US20130017116A1 (en) | 2013-01-17 |
TWI461547B (zh) | 2014-11-21 |
KR101536291B1 (ko) | 2015-07-13 |
ES2581315T3 (es) | 2016-09-05 |
BR112012024625B1 (pt) | 2019-01-08 |
JP5709845B2 (ja) | 2015-04-30 |
CN102822373B (zh) | 2016-07-06 |
BR112012024625A2 (pt) | 2016-05-31 |
TW201139698A (en) | 2011-11-16 |
CN102822373A (zh) | 2012-12-12 |
EP2554701A1 (en) | 2013-02-06 |
KR20120127737A (ko) | 2012-11-23 |
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