WO2010016447A1 - 外観に優れた高強度溶融亜鉛めっき鋼板およびその製造方法 - Google Patents
外観に優れた高強度溶融亜鉛めっき鋼板およびその製造方法 Download PDFInfo
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- WO2010016447A1 WO2010016447A1 PCT/JP2009/063715 JP2009063715W WO2010016447A1 WO 2010016447 A1 WO2010016447 A1 WO 2010016447A1 JP 2009063715 W JP2009063715 W JP 2009063715W WO 2010016447 A1 WO2010016447 A1 WO 2010016447A1
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- Prior art keywords
- rolling
- appearance
- heated
- under
- steel sheet
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- 229910000831 Steel Inorganic materials 0.000 title abstract description 17
- 239000010959 steel Substances 0.000 title abstract description 17
- 238000000034 method Methods 0.000 title abstract description 15
- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title abstract 4
- 229910052725 zinc Inorganic materials 0.000 title abstract 4
- 239000011701 zinc Substances 0.000 title abstract 4
- 238000005096 rolling process Methods 0.000 claims description 29
- 238000007747 plating Methods 0.000 claims description 17
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims description 13
- 239000001257 hydrogen Substances 0.000 claims description 13
- 238000005098 hot rolling Methods 0.000 claims description 12
- 238000005097 cold rolling Methods 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 5
- 238000005554 pickling Methods 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 229910001234 light alloy Inorganic materials 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 16
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 10
- 229910052717 sulfur Inorganic materials 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 229910000859 α-Fe Inorganic materials 0.000 abstract 1
- 238000000137 annealing Methods 0.000 description 20
- 230000000694 effects Effects 0.000 description 16
- 238000000465 moulding Methods 0.000 description 16
- 150000001875 compounds Chemical class 0.000 description 7
- 230000007423 decrease Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000005275 alloying Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005246 galvanizing Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 1
- 238000001467 acupuncture Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- RCCPEORTSYDPMB-UHFFFAOYSA-N hydroxy benzenecarboximidothioate Chemical compound OSC(=N)C1=CC=CC=C1 RCCPEORTSYDPMB-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0405—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing of ferrous alloys
-
- 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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
- C21D8/0426—Hot rolling
-
- 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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
- C21D8/0436—Cold rolling
-
- 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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0447—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
- C21D8/0473—Final recrystallisation annealing
-
- 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
- C22C38/04—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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- 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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
- C23C2/0222—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating in a reactive atmosphere, e.g. oxidising or reducing atmosphere
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
- C23C2/0224—Two or more thermal pretreatments
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/024—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by cleaning or etching
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
- C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
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- 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 excellent appearance suitable for an automobile and a manufacturing method thereof.
- Scaling can be suppressed by controlling the element concentration during annealing and by controlling the element concentration of annealing.
- TS tensile
- the mounting board is characterized in that it further includes a deviation of Sb00030-0.050 Sn 0020-0.050.
- TS is 0a or higher, and it is a method of a board with excellent appearance.
- Thrust made up of 2 or 3 is subjected to hot rolling.
- the lower is more advantageous for molding, and the amount of T, etc., which is determined as a chemical compound increases according to the amount, so the upper limit is 0.0000, but is preferably 0.0000. Lower is better, but if the amount is extremely low, the steelmaking will increase, so the lower limit is set to 0.5.
- the lower limit is set to 0 ⁇ . If it is added excessively, the formation of S-oxide on the surface of the slurry will be significant, and N hot rolling Even with this scaling, S chemicals are not sufficiently removed and plating occurs, so the upper limit is set to 0. In terms of quality, the preference is below 0.7. No 0 ⁇ 2 5
- No. is effective as a solidifying element. More: ⁇ 5 Above. If it is added excessively, the upper limit is set to 2.5 because the moldability is reduced. It is under 22.
- P is effective as a solidifying element and has the effect of increasing the value. To get this result, it is necessary to go up 0.0. It is above 0.03. If it is added to the surplus, the boundary will become prominent, and it will be easy to change or center, so the upper limit is set to 0.20. It is below 0 ⁇ 0.
- a lower N is more advantageous for molding, and the amount of T determined as a compound increases according to the amount of N, so the upper limit is set to 0.0007.
- a lower value is better, but if the N content is extremely low, the steelmaking stroke will rise, so the lower limit is set to 0.0005.
- T and N are set as T T N to improve molding. In order to obtain this result, it is necessary to add over 0.00, and in order to sufficiently fix and N, it is necessary to change according to the amount of N and to satisfy the following) There is a need to.
- Acupuncture is an important element for obtaining a clear and excellent appearance.
- N By simultaneously adding N to the plate, it is possible to suppress annealing even in an atmosphere with a high hydrogen concentration, and to suppress the occurrence of a plastic shape. This is thought to be because the formation of C and N on the surface effectively suppresses chemical conversion. Also in the slab
- the upper limit is set to 050 because not only a rise is caused, but also micro-surfaces are generated at the time of hot rolling to deteriorate the surface quality.
- N is an important element for obtaining a clear and excellent appearance. By simultaneously adding them to the plate, annealing can be suppressed even in an atmosphere with a high hydrogen concentration, and the occurrence of a plastic shape can be suppressed. This is thought to be due to the fact that the oxidization of N and N is effectively suppressed. Also,
- the lower limit is set to 0.0005. If it exceeds 0.0000, the lower part of the molding is significant, so the upper limit is 20000.
- the deviation of b00030 to 0 ⁇ 0 50 Sn 0020 to 0 ⁇ 0 50, No. 0 0 00 0 to 0 ⁇ 08 o 00 0 ⁇ 0 may be added for the following reasons.
- Sb00030-0005 Sb is an element that suppresses oxidation by the surface, and by increasing the value to 0.0030, it is possible to further suppress the generation of press defects due to annealing. Even if the value is increased by 0.0.50, the effect is not only reduced, but also the stock is increased, and the upper limit is set to 0.0.50.
- No. has the effect of improving the molding by fixing solid C and N as well as T, and also has the effect of increasing strength with fine grains. In order to obtain this result, an addition of 0 ⁇ 0 is necessary. Even if it is added to the surplus, not only these results will be added, but also nitridation is likely to occur during annealing, and a plastic defect is generated. Therefore, the upper limit is set to 0.08.
- V like T, has the effect of fixing solid C and N to improve molding, and also has the effect of increasing strength with fine grains.
- an addition of 0 ⁇ 0 is necessary. Even if it is added to the surplus, not only these results will be added, but also nitridation is likely to occur during annealing, and a plastic defect is generated. Therefore, the upper limit is set to 0.08.
- No. is effective as a solidifying element and also has the effect of improving the duality.
- an addition of 0 ⁇ 0 is necessary. Even if the value is increased by 0 ⁇ 0, the result is not only the sum but it is also increased and the upper limit is set to 0 ⁇ 0.
- the slab having the above composition is subjected to heating, roughing, and finish rolling in the hot rolling process, and after removing the hot-rolled steel sheet surface skel in the pickling process, cold rolling and annealing processes are performed. Manufactured by annealing, plating, or further alloying.
- the slurry manufacturing method is not particularly limited.
- the up-rolling Prior to the up-rolling, scaling on collision 0a is performed and the up-rolling is performed. In order to remove the layer S from the plate and make a crack, it is necessary to perform a squeeze over 0 a before finish rolling. From the viewpoint of further improving the quality, it is preferable that the collision is 1.5 a. .
- Hot rolling and acid treatment are performed to remove the hot-rolled steel sheet surface.
- the process is not particularly limited. By the law.
- the degree is set to 700 s and 30 s.
- 850C the diameter increases and the strength decreases, so 850 is the upper limit.
- the holding interval is extended for a long time, the particle size is increased and the strength is lowered, and the productivity is also lowered.
- the hydrogen concentration is preferably set to 5.0 or lower.
- the steel is made by melting the amount of steel shown in Fig. 23.
- JS5 was taken from the direction of the rolling angle and was subjected to a tensile test, and the appearance quality was evaluated at. In addition, we investigated the absence of glaring and glazing, and found that the appearance was good () and the appearance was brilliant (X). Furthermore, in order to evaluate the quality of the press, cut a 300x70 claw short sump with the rolling angle direction as the longitudinal direction, add zero work with a tensile tester, and grind the surface of the plate with stone to investigate the absence of a shape defect. did. The appearance of molding was good () with no defects in shape (), and the appearance of molding with defects in shape was poor X). In addition, the machine and (nighter) were performed on the plate surface parallel to the rolling direction, and the texture was observed with an optical microscope. All of the obtained board was light weave.
- Table 2 shows the properties, appearance, and results.
- N are inventions, and the appearance and appearance are important. Also, the degree is low because N conversion cannot be used. It can be seen that Cu is an invention of 8 and 9, respectively, and the quality of appearance is as high as 7 and N is necessary on the quality of appearance. No. 0 is an invention of the amount of T, and the appearance is good, but a shape defect occurs in the molding, and the appearance of the molding is high. 2
- the tensile strength is low. H has a high finish, so the tensile strength is low and the hydrogen concentration is low. Since the hydrogen concentration is low, the appearance and appearance of the film are low, and because the degree of annealing is low, the degree is obtained, but the elongation is low. The tensile strength is low because the annealing is high, but the tensile strength is low because the cold rolling is low.
- the light board can be used as a method for producing the above-mentioned paper board.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2729790A CA2729790C (en) | 2008-08-05 | 2009-07-28 | High strength galvannealed steel sheet with excellent appearance and method for manufacturing the same |
CN200980131038.XA CN102119235B (zh) | 2008-08-05 | 2009-07-28 | 外观优良的高强度热镀锌钢板及其制造方法 |
EP09804930.7A EP2309015B1 (en) | 2008-08-05 | 2009-07-28 | Procee for the production of a HIGH-STRENGTH HOT-DIP ZINC-COATED STEEL SHEET HAVING EXCELLENT SURFACE APPEARANCE |
US13/057,331 US9200352B2 (en) | 2008-08-05 | 2009-07-28 | High strength galvannealed steel sheet with excellent appearance and method for manufacturing the same |
KR1020137026278A KR101467727B1 (ko) | 2008-08-05 | 2009-07-28 | 외관이 우수한 고강도 용융 아연 도금 강판 및 그 제조 방법 |
KR1020117002230A KR101358567B1 (ko) | 2008-08-05 | 2009-07-28 | 외관이 우수한 고강도 용융 아연 도금 강판 및 그 제조 방법 |
MX2011001273A MX2011001273A (es) | 2008-08-05 | 2009-07-28 | Chapa de acero recocida y galvanizada de alta resistencia con excelente apariencia y metodo para fabricar la misma. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008-201736 | 2008-08-05 | ||
JP2008201736A JP5391607B2 (ja) | 2008-08-05 | 2008-08-05 | 外観に優れた高強度溶融亜鉛めっき鋼板およびその製造方法 |
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US (1) | US9200352B2 (ja) |
EP (1) | EP2309015B1 (ja) |
JP (1) | JP5391607B2 (ja) |
KR (2) | KR101358567B1 (ja) |
CN (1) | CN102119235B (ja) |
CA (1) | CA2729790C (ja) |
MX (1) | MX2011001273A (ja) |
TW (1) | TWI396754B (ja) |
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Cited By (1)
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JP2011219845A (ja) * | 2010-04-14 | 2011-11-04 | Nippon Steel Corp | 耐食性に優れたプレス加工用Sn−Znめっき高強度鋼板およびその製造方法 |
Families Citing this family (6)
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DE102011056846B4 (de) * | 2011-12-22 | 2014-05-28 | Thyssenkrupp Rasselstein Gmbh | Verfahren zur Herstellung eines Aufreißdeckels sowie Verwendung eines mit einer Schutzschicht versehenen Stahlblechs zur Herstellung eines Aufreißdeckels |
BR112014027992B1 (pt) | 2012-05-08 | 2019-09-17 | Tata Steel Ijmuiden Bv | Chapa de aço laminada à quente e método de fabricação da mesma |
JP5826321B2 (ja) * | 2013-03-27 | 2015-12-02 | 日新製鋼株式会社 | めっき密着性に優れた溶融亜鉛系めっき鋼板の製造方法 |
CN105297033A (zh) * | 2014-05-30 | 2016-02-03 | 宝山钢铁股份有限公司 | 热轧免酸洗直接冷轧还原退火热镀产品的生产方法 |
CN104233068B (zh) * | 2014-09-22 | 2016-08-24 | 武汉钢铁(集团)公司 | 抗拉强度440MPa级轿车内部结构件用热镀锌高强钢及其生产方法 |
CN111926252B (zh) * | 2020-07-31 | 2022-01-18 | 马鞍山钢铁股份有限公司 | 一种深冲用途的热轧酸洗钢板及其生产方法 |
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- 2009-07-28 MX MX2011001273A patent/MX2011001273A/es active IP Right Grant
- 2009-07-28 WO PCT/JP2009/063715 patent/WO2010016447A1/ja active Application Filing
- 2009-07-28 EP EP09804930.7A patent/EP2309015B1/en not_active Not-in-force
- 2009-07-28 US US13/057,331 patent/US9200352B2/en not_active Expired - Fee Related
- 2009-07-28 KR KR1020117002230A patent/KR101358567B1/ko active IP Right Grant
- 2009-07-28 KR KR1020137026278A patent/KR101467727B1/ko active IP Right Grant
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Also Published As
Publication number | Publication date |
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CN102119235A (zh) | 2011-07-06 |
EP2309015A4 (en) | 2012-08-01 |
TWI396754B (zh) | 2013-05-21 |
KR101358567B1 (ko) | 2014-02-04 |
CA2729790A1 (en) | 2010-02-11 |
JP5391607B2 (ja) | 2014-01-15 |
KR20110023911A (ko) | 2011-03-08 |
EP2309015B1 (en) | 2013-09-11 |
KR101467727B1 (ko) | 2014-12-01 |
KR20130122012A (ko) | 2013-11-06 |
US9200352B2 (en) | 2015-12-01 |
EP2309015A1 (en) | 2011-04-13 |
MX2011001273A (es) | 2011-03-29 |
CN102119235B (zh) | 2014-07-02 |
JP2010037596A (ja) | 2010-02-18 |
TW201012946A (en) | 2010-04-01 |
US20110139316A1 (en) | 2011-06-16 |
CA2729790C (en) | 2014-10-21 |
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