WO2017154981A1 - マルテンサイト系ステンレス鋼箔およびその製造方法 - Google Patents
マルテンサイト系ステンレス鋼箔およびその製造方法 Download PDFInfo
- Publication number
- WO2017154981A1 WO2017154981A1 PCT/JP2017/009238 JP2017009238W WO2017154981A1 WO 2017154981 A1 WO2017154981 A1 WO 2017154981A1 JP 2017009238 W JP2017009238 W JP 2017009238W WO 2017154981 A1 WO2017154981 A1 WO 2017154981A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steel foil
- stainless steel
- rolling
- less
- martensitic stainless
- Prior art date
Links
- 239000011888 foil Substances 0.000 title claims abstract description 72
- 229910001105 martensitic stainless steel Inorganic materials 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title abstract description 22
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 238000005096 rolling process Methods 0.000 claims description 48
- 238000005097 cold rolling Methods 0.000 claims description 38
- 239000002184 metal Substances 0.000 claims description 10
- 150000001247 metal acetylides Chemical class 0.000 claims description 4
- 230000007547 defect Effects 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 46
- 239000010959 steel Substances 0.000 description 46
- 239000000463 material Substances 0.000 description 17
- 230000003746 surface roughness Effects 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000010731 rolling oil Substances 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 235000019592 roughness Nutrition 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000013000 roll bending Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- 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
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/40—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling foils which present special problems, e.g. because of thinness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
-
- 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
-
- 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
- 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
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—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
- C21D8/0421—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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
- C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/02—Roll dimensions
- B21B2267/06—Roll diameter
-
- 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
- C21D2211/004—Dispersions; Precipitations
-
- 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
-
- 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
- C21D2211/008—Martensite
Definitions
- the present invention relates to an extremely thin martensitic stainless steel foil and a method for producing the same.
- Patent Document 1 discloses an invention of a grain refined martensitic stainless steel that is manufactured by a liquid quenching method and has a thickness of 0.04 mm (40 ⁇ m), which is used for a blade or the like.
- Patent Document 2 describes a razor blade material produced by a rapid solidification method and having an amorphous structure occupied in the structure of 30% or more by volume and a material thickness of 30 ⁇ m to 100 ⁇ m. ing.
- an ultrathin martensitic stainless steel by a conventional manufacturing method in which a steel slab is produced by a melting method, forged, and hot / cold rolled.
- the inventions described in Patent Documents 1 and 2 also achieve ultrathin plate formation by changing the metal structure to an amorphous state using a special manufacturing method such as a liquid quenching method.
- a steel foil of 40 ⁇ m or less can be manufactured by cold rolling, the surface skin can be adjusted and a desired metal structure can be obtained, so that the application can be expanded.
- an object of the present invention is to provide a martensitic stainless steel foil having a thickness of 35 ⁇ m or thinner, which is thinner than before, by cold rolling and a method for producing the same.
- an embodiment of the present invention is a martensitic stainless steel foil having a thickness of 35 ⁇ m or less and a steepness at a length of 650 mm of 0.75% or less.
- the metal structure of the cross section of the martensitic stainless steel foil is preferably a ferrite structure in which carbides are dispersed.
- C 0.25 to 1.5%
- Cr 10 to 18%
- Si 1.0% or less (excluding 0%)
- Mn 1.5% or less (0% Not contained)
- Mo 3.0% or less (including 0%)
- the balance is a martensitic stainless steel foil substantially made of Fe.
- Another embodiment of the present invention is a method for producing a martensitic stainless steel foil,
- the rolling speed in finish cold rolling is 40 to 120 m / min.
- the work roll diameter in the intermediate pass of the finish cold rolling is 50 mm or less,
- the work roll diameter in the final pass of the finish cold rolling is equal to or greater than the work roll diameter in the intermediate pass, and is a method for producing a martensitic stainless steel foil.
- the first feature of the martensitic stainless steel foil of the present invention (hereinafter also simply referred to as “steel foil”) is that the thickness is 35 ⁇ m or less.
- a preferable thickness is 30 ⁇ m or less.
- the lower limit is not particularly limited, but it is preferably set to 10 ⁇ m or more in consideration of the manufacturing limit.
- the martensitic stainless steel in the present invention refers to stainless steel in which the metal structure of the steel strip is transformed into a martensite structure by quenching and the hardness of the steel strip is increased.
- the steel foil of the present invention has a second feature that the steepness in the length of 650 mm in the rolling direction is 0.75% or less. A more preferable steepness is 0.50% or less.
- the steepness in this embodiment can be measured by the following method as an example. First, the steel foil is cut into a certain length (for example, a length of 650 mm in the rolling direction), placed on a horizontal surface plate, and the rising height of the steel foil is measured using a laser displacement meter or the like. In the measurement of the steepness in this embodiment, a width of 320 mm is used, but the width is not particularly specified. A width that can measure the steepness in the length in the rolling direction may be used. At this time, the steepness can be obtained from the data in which the floating heights are recorded in a matrix at every fixed length in the width and length directions of the steel foil. When measuring steepness with high accuracy, it is preferable that the sample has a certain length. Since high reliability can be maintained if the length of the thin plate is 650 mm or more, the length for measuring the steepness is set to 650 mm in the present invention.
- the steel foil of the present invention is formed into an extremely thin shape by cold rolling using, for example, a roll mill in order to finish it extremely thin.
- the surface of the steel foil of the present invention can be adjusted to various surface roughnesses by adjusting the sheet feeding speed and the amount of rolling oil and rolling the steel foil by rolling at a high reduction rate.
- the arithmetic average roughness Ra is adjusted to 0.08 ⁇ m or less and the maximum height Rz is adjusted to 1 ⁇ m or less. Is preferred.
- a more preferable upper limit of Ra is 0.06 ⁇ m, and a more preferable upper limit of Rz is 0.5 ⁇ m.
- streaks transferred from the rolling roll and oil pits formed by biting of the rolling oil may be formed on the surface of the steel foil.
- the effect of suppressing the generation of oil pits and obtaining a steel sheet having a better surface shape can be expected.
- the surface roughness measured in the direction perpendicular to the rolling direction may be adjusted more coarsely than the surface roughness measured in the rolling direction.
- the surface roughness measured in the direction perpendicular to the rolling direction is rougher by 0.005 ⁇ m or more in Ra than the surface roughness measured in the rolling direction.
- the components of the martensitic stainless steel foil of the present invention in addition to those shown in, for example, JIS-G-4303, these improved steels and the conventionally proposed compositions can also be applied. Further, in order to obtain a steel foil with higher strength, C: 0.25 to 1.5% by mass, Cr: 10 to 18%, Si: 1.0% or less (excluding 0%), Mn : 1.5% or less (excluding 0%), Mo: 3.0% or less (including 0%), and the balance is preferably a martensitic stainless steel foil made of Fe and inevitable impurities. Carbide is formed by this composition, and the size and metal structure of the carbide can be changed by heat treatment, and the hardness can be adjusted according to the application.
- the metal structure of the steel foil of the present invention is in a state where carbides are dispersed in the ferrite structure.
- carbides are dispersed in the ferrite structure.
- the width of the steel foil of the present invention is not particularly limited, for example, the width after cold rolling is preferably 100 mm or more. By making the width wide in this way, it can be slit later as a desired product width, and productivity can be improved even when etching is performed.
- the width after cold rolling is preferably 400 mm or less. More preferably, it is 350 mm or less, More preferably, it is 300 mm or less. This is because when a steel foil having a thickness of 35 ⁇ m or less is produced by cold rolling, depending on the type of rolling mill used, a so-called kiss roll is generated, which is in contact with the work roll during rolling. This is because it becomes difficult to obtain a good steepness by roll bending control during hot rolling.
- the hardness of the steel foil of the present invention is preferably 270 to 370 HV in terms of Vickers hardness, for example. Since this hardness is substantially the same as that of a conventional martensitic stainless steel strip having a thickness of 0.1 ⁇ m or more, for example, it is excellent in bending and drawing workability. A more preferable lower limit of the hardness is 290 HV, and a more preferable upper limit of the hardness is 350 HV.
- the tensile strength of the steel foil of the present invention is preferably 880 to 1050 N / mm 2 . This tensile strength is substantially equivalent to that of a conventional martensitic stainless steel strip having a thickness of 0.1 ⁇ m or more, for example.
- a more preferable lower limit of the tensile strength is 900 N / mm 2
- a more preferable upper limit of the tensile strength is 1000 N / mm 2
- the steel foil of this invention can adjust the hardness and tensile strength of steel foil suitably by changing a cold rolling rate and heat processing conditions according to a use. For example, when it is desired to suppress the occurrence of wrinkles or creases during conveyance, the problem can be dealt with by increasing the cold rolling rate of the steel foil to a higher hardness. For example, in order to obtain good workability, it can be dealt with by lowering the cold rolling rate to lower the hardness.
- the steel foil of the present invention is produced, for example, by performing a cold rolling process in which cold rolling and heat treatment are performed on a hot rolled material having a thickness of 3 mm or less.
- the lower limit is not particularly limited, but since the surface of the material after hot rolling has scales and wrinkles, it is preferably 0.5 mm or more for the purpose of removal in a subsequent step. If those defects remain on the surface of the material, there is a possibility that the steel foil having a thickness of 35 ⁇ m or less may be a starting point of fracture during rolling.
- this cold rolling process a polishing process for removing scale on the surface and a cracking process for removing cracks at the edge of the material and correcting the shape may be performed.
- streak-like rolling marks facing the rolling direction may be confirmed on the surface of the steel foil.
- existing cold rolling mills can be used, if a rolling mill having a bending mechanism for intermediate rolls or work rolls is used, the rolling load distribution in the sheet width direction can be adjusted to adjust the sheet width direction. It is preferable because the elongation rate can be controlled and a good shape can be obtained.
- existing furnaces such as vertical furnaces and horizontal furnaces (horizontal furnaces) may be used for the heat treatment process, but in order to prevent sag in the plate and to obtain better steepness It is preferable to use a vertical furnace in which deflection due to its own weight hardly occurs.
- the cold rolling step of the production method of the present invention is performed by cold rolling by a plurality of rolling passes on an intermediate cold rolled material that has been cold rolled at least once and rolled to a thickness of about 0.1 mm. It has a finish cold rolling process to finish a steel foil of 35 ⁇ m or less.
- the rolling reduction of the intermediate cold pass of this finish cold rolling can be set to 35% or less. By setting to this rolling reduction, the rolling load in each rolling pass can be suppressed, and breakage during rolling and rough surface of the material can be suppressed. More preferably, the rolling reduction of each rolling pass is 30% or less.
- middle pass of the said finish cold rolling process is set to 50 mm or less.
- the intermediate pass refers to a finish cold rolling pass excluding the final pass described later.
- the production method of the present invention is characterized in that the work roll diameter used for the final pass of the finish cold rolling is set to be equal to or larger than the work roll diameter used for the intermediate pass.
- the work roll diameter used for the final pass of finish cold rolling is set larger than the work roll diameter used for the intermediate pass.
- the work roll diameter at the final pass is preferably 60 mm or more, more preferably 70 mm or more, and further preferably 80 mm or more. At this time, the rolling reduction of the final pass can be set to 25% or less.
- softening annealing may be performed before the final pass, and final product hardness may be adjusted to desired hardness.
- the rolling speed during finish cold rolling it is preferable to adjust the rolling speed during finish cold rolling to 40 to 120 m / min.
- the rolling speed is excessively low, the rolling load increases, it is difficult to obtain a good shape, and the rolling efficiency tends to deteriorate.
- the rolling speed is excessively high, the rolling oil is taken out more and is being wound up. May cause telescopes. Therefore, by adjusting the rolling speed within this range, the material telescope can be suppressed while obtaining a good shape.
- a more preferable lower limit of the rolling speed is 50 m / min, more preferably 70 m / min.
- the upper limit of a preferable rolling speed is 110 m / min, More preferably, it is 100 m / min.
- the martensitic stainless steel foil of the present invention may be subjected to a slitting process in which a wide steel foil after the cold rolling process is cut into a plurality of strips. Since the steel foil of the present invention has a good steepness, it is possible to obtain an excellent metal strip that hardly causes lateral bending even after slitting.
- the cold rolling of 4 passes is performed at a work roll diameter of 30 mm, a reduction rate per pass of 18 to 30%, and a rolling speed of 40 to 110 m / min (intermediate pass).
- the work roll diameter was changed to 80 mm and cold rolling with a reduction rate of about 17% was performed (final pass).
- Comparative Example No. 11 after producing a steel ingot having the composition shown in Table 1, an intermediate material having a thickness of about 0.11 mm is produced in the same process as the example of the present invention, and then finish cold rolling for one pass is performed.
- a martensitic stainless steel strip having a thickness of 0.1 mm was prepared.
- FIG. 1 shows a surface photograph of the martensitic stainless steel foil of the present invention
- FIG. 2 shows a cross-sectional photograph thereof.
- the surface of the steel foil of the present invention has a smooth rolling surface with streak-shaped rolling marks facing the rolling direction by processing by cold rolling. it can.
- the obtained steel foil was laminated
- the portion shown as the plate thickness direction is one steel foil, and the upper and lower portions are laminated with another steel foil, and the left-right direction in FIG. 2 is the width direction (perpendicular to the rolling direction). Direction).
- the steepness and Vickers hardness of the steel foil of the present invention were measured.
- a test piece having a length of 650 mm and a width of 320 mm is cut out from the martensitic stainless steel foil of the present invention.
- the length direction is the rolling direction.
- the test piece was evaluated by the height of the lift when placed on a horizontal surface plate.
- the Vickers hardness was measured in accordance with the method defined in JIS-Z2244 by measuring the hardness at both ends in the width direction and at the center in the width direction with a load of 0.490 N, and the average value was obtained.
- Tensile strength was obtained by collecting five JIS13B test pieces from the center in the width direction of the steel foil and measuring them according to the method defined in JIS-Z2241 to obtain an average value.
- For the surface roughness a length of 4 mm was measured using a contact-type surface roughness meter, and an arithmetic average roughness Ra and a maximum height Rz were measured.
- the measurement results are shown in Table 2 and Table 3.
- FIG. 3 shows the measurement result of the steepness of the martensitic stainless steel foil of the example of the present invention
- FIG. 4 shows the measurement result of the lifting height of the martensitic stainless steel foil of the present invention. From Table 2, FIG. 3 and FIG.
- the martensitic stainless steel foil of the present invention has a very high value of 0.5 mm or less and a steepness of 0.3% at the maximum from the horizontal surface plate. Indicated. From this result, it was confirmed that the martensitic stainless steel foil of the present invention has a good steepness despite being very thin. On the other hand, the manufacturing method of the present invention was not applied, and it was confirmed that the steel strip of the comparative example thicker than the present invention was inferior to the inventive example in the values of the maximum lift height and the maximum steepness. Moreover, the hardness and tensile strength of the steel foil of the present invention example were almost the same values as in the conventional example, and it was confirmed that the steel foil had a very smooth surface.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Geometry (AREA)
- Metal Rolling (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
そこで本発明の目的は、冷間圧延にて、従来よりも薄い35μm以下のマルテンサイト系ステンレス鋼箔およびその製造方法を提供することである。
そのマルテンサイト系ステンレス鋼箔の断面の金属組織は、炭化物が分散しているフェライト組織であることが好ましい。
好ましくは、質量%でC:0.25~1.5%、Cr:10~18%、Si:1.0%以下(0%を含まない)、Mn:1.5%以下(0%を含まない)、Mo:3.0%以下(0%を含む)、残部は実質的にFeからなるマルテンサイト系ステンレス鋼箔である。
仕上冷間圧延における圧延速度は40~120m/minであり、
前記仕上冷間圧延の中間パスにおけるワークロール径は50mm以下であり、
前記仕上冷間圧延の最終パスにおけるワークロール径は、中間パスにおけるワークロール径以上であることを特徴とする、マルテンサイト系ステンレス鋼箔の製造方法である。
以下に本発明の実施形態を詳しく説明する。本発明のマルテンサイト系ステンレス鋼箔(以下、単に「鋼箔」とも記載する。)は、厚みが35μm以下であることが第一の特徴である。好ましい厚みは30μm以下である。これにより、マルテンサイト系ステンレス鋼箔のプレス、切断性はもとより、エッチングによる貫通加工性の向上が期待できるため、複雑な形状加工や高精度な加工が求められる製品など、多様な用途に適用できる可能性が高まる。なお下限は特に限定しないが、製造限界を考慮して、例えば10μm以上とすることが好ましい。なお本発明におけるマルテンサイト系ステンレス鋼とは、焼入れによって鋼帯の金属組織がマルテンサイト組織に変態し、鋼帯の硬度が硬くなるステンレス鋼を言う。
本発明の鋼箔は、圧延方向の650mm長さにおける急峻度が0.75%以下であることが第二の特徴である。より好ましい急峻度は、0.50%以下である。上記の特徴を備えることで、複雑あるいは精密に加工可能な鋼箔を得ることができる。また、鋼箔を製造する上で、コイル状に巻取る際に鋼箔に発生するしわや、切断時の横曲り等の形状不良を抑制することもできる。なお急峻度の下限は特に規定しないが、完全に平坦な形状(急峻度0.00%)は製造困難なため、例えば0.01%以上であることが好ましい。
なお本実施形態での急峻度の測定は、例として下記に示す方法で測定することができる。まず鋼箔を一定長さ(例えば、圧延方向の長さ650mm)に切断し、水平定盤上に置き、レーザー変位計等を用いて、鋼箔の浮上り高さを測定する。尚、本実施形態での急峻度の測定では、幅は320mmのものを用いたが、幅は特に規定しない。圧延方向の長さにおける急峻度が測定できる幅のものを用いればよい。この際、鋼箔の幅および長さ方向で、一定長さごとで浮上り高さをマトリックス状に記録したデータから、急峻度を求めることができる。なお、精度良く急峻度を測定しようとする際には、ある程度の試料の長さがあったほうが好ましい。650mm以上の薄板の長さがあれば高い信頼性を維持することができるため、本発明では急峻度を測定する長さを650mmと設定している。
また本発明の製造方法では、上記仕上冷間圧延工程の中間パスに使用するワークロール径を、50mm以下に設定する。好ましくは、40mm以下であり、より好ましくは30mm以下である。上記のワークロール径に設定することで、圧延荷重を抑えながら、板厚が薄い鋼箔を効率良く圧延することが可能である。なおここでの中間パスとは、後述する最終パスを除く仕上冷間圧延パスを示す。
表1に示す組成を有するマルテンサイト系ステンレス鋼の鋼塊を作製した後、鍛造、熱間圧延を行い、厚み1.5mmの熱間圧延材を作製した。その後、表面研磨・粗圧延を施し、耳切り加工で素材幅方向の両端部を除去し、冷間圧延用素材を準備した。続いて、前述の冷間圧用素材に対し、冷間圧延と熱処理を繰り返して厚さ約0.1mmの中間冷延素材を作製し、その中間冷延素材に仕上冷間圧延を行って厚さ30μmのマルテンサイト系ステンレス鋼箔を作製して本発明例No.1とした。本発明例の仕上冷間圧延工程は、ワークロール径を30mm、1パス当たりの圧下率を18~30%、圧延速度を40~110m/minとして4パスの冷間圧延を行い(中間パス)、軟化焼鈍後、ワークロール径を80mmに変更して圧下率約17%の冷間圧延を行った(最終パス)。比較例No.11として、表1に示す組成を有する鋼塊を作製した後、本発明例と同様の工程で厚さ約0.11mmの中間素材を作製し、その後1パスの仕上冷間圧延を施して、厚さ0.1mmのマルテンサイト系ステンレス鋼帯を作成した。比較例の仕上圧延工程におけるワークロール径は120mmであり、圧延速度は約180m/minであった。図1に本発明例のマルテンサイト系ステンレス鋼箔の表面写真を、図2にその断面写真を示す。図1に示すように、本発明の鋼箔表面は、冷間圧延により加工をすることで、圧延方向を向いた筋状の圧延痕がある、つやが無い圧延肌となっていることが確認できる。また、図2は金属組織を観察する為、得られた鋼箔を積層させ、断面方向で組織観察を行った。図2より、フェライト組織中に炭化物が分散している金属組織を呈していることが確認できた。尚、図2において、板厚方向として示す部分が一つの鋼箔であり、その上下は別の鋼箔が積層されているものあり、図2の左右方向が幅方向(圧延方向に対して垂直な方向)である。
Claims (4)
- 厚みが35μm以下であり、
650mm長さにおける急峻度が0.75%以下であることを特徴とするマルテンサイト系ステンレス鋼箔。 - 断面の金属組織は、炭化物が分散しているフェライト組織であることを特徴とする請求項1に記載のマルテンサイト系ステンレス鋼箔。
- 質量%でC:0.25~1.5%、Cr:10~18%、Si:1.0%以下(0%を含まない)、Mn:1.5%以下(0%を含まない)、Mo:3.0%以下(0%を含む)、残部はFe及び不純物からなることを特徴とする請求項1または2に記載のマルテンサイト系ステンレス鋼箔。
- マルテンサイト系ステンレス鋼箔の製造方法において、
仕上冷間圧延における圧延速度は40~120m/minであり、
前記仕上冷間圧延の中間パスにおけるワークロール径は50mm以下であり、
前記仕上冷間圧延の最終パスにおけるワークロール径は、中間パスにおけるワークロール径以上であることを特徴とする、マルテンサイト系ステンレス鋼箔の製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018504557A JP6729679B2 (ja) | 2016-03-09 | 2017-03-08 | マルテンサイト系ステンレス鋼箔およびその製造方法 |
EP17763321.1A EP3428298A4 (en) | 2016-03-09 | 2017-03-08 | MARTENSITIC STAINLESS STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME |
US16/081,733 US11098393B2 (en) | 2016-03-09 | 2017-03-08 | Martensitic stainless steel foil and manufacturing method thereof |
KR1020187023559A KR102114022B1 (ko) | 2016-03-09 | 2017-03-08 | 마텐자이트계 스테인리스 강박 및 그 제조 방법 |
CN201780016118.5A CN108713067B (zh) | 2016-03-09 | 2017-03-08 | 马氏体系不锈钢箔及其制造方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016046217 | 2016-03-09 | ||
JP2016-046217 | 2016-03-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017154981A1 true WO2017154981A1 (ja) | 2017-09-14 |
Family
ID=59789694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2017/009238 WO2017154981A1 (ja) | 2016-03-09 | 2017-03-08 | マルテンサイト系ステンレス鋼箔およびその製造方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US11098393B2 (ja) |
EP (1) | EP3428298A4 (ja) |
JP (1) | JP6729679B2 (ja) |
KR (1) | KR102114022B1 (ja) |
CN (1) | CN108713067B (ja) |
WO (1) | WO2017154981A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6319505B1 (ja) * | 2017-09-08 | 2018-05-09 | 凸版印刷株式会社 | 蒸着マスク用基材、蒸着マスク用基材の製造方法、蒸着マスクの製造方法および表示装置の製造方法 |
JP2019049044A (ja) * | 2017-09-08 | 2019-03-28 | 凸版印刷株式会社 | 蒸着マスク用基材、蒸着マスク用基材の製造方法、蒸着マスクの製造方法および表示装置の製造方法 |
CN111372770A (zh) * | 2017-10-30 | 2020-07-03 | 日本制铁株式会社 | 复合板 |
US11390953B2 (en) | 2016-04-14 | 2022-07-19 | Toppan Printing Co., Ltd. | Vapor deposition mask base material, vapor deposition mask base material manufacturing method, and vapor deposition mask manufacturing method |
WO2022210918A1 (ja) * | 2021-03-31 | 2022-10-06 | 日鉄ケミカル&マテリアル株式会社 | 可撓性ステンレス箔および可撓性発光デバイス |
US11499235B2 (en) | 2017-10-13 | 2022-11-15 | Toppan Printing Co., Ltd. | Vapor deposition mask substrate, vapor deposition mask substrate manufacturing method, vapor deposition mask manufacturing method, and display device manufacturing method |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111676421B (zh) * | 2020-05-20 | 2021-09-28 | 樟树市兴隆高新材料有限公司 | 一种马氏体气阀钢轧制坯的轧制方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10263615A (ja) * | 1997-03-25 | 1998-10-06 | Kawasaki Steel Corp | 圧延方法 |
WO2005101551A1 (ja) * | 2004-04-12 | 2005-10-27 | Matsushita Electric Industrial Co., Ltd. | 金属酸化物含有基板とその製造法 |
JP2009302203A (ja) * | 2008-06-11 | 2009-12-24 | Nippon Steel Materials Co Ltd | 磁気シールド板 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH066749B2 (ja) * | 1985-06-28 | 1994-01-26 | 日新製鋼株式会社 | 形状の良好なマルテンサイト系ステンレス鋼薄鋼帯の製造方法 |
DE69129130T2 (de) * | 1990-04-12 | 1998-10-22 | Nippon Steel Corp | Verfahren zum Herstellen doppeltorientierter Elektrobleche mit hoher magnetischer Flussdichte |
JP2955420B2 (ja) * | 1992-01-31 | 1999-10-04 | 日新製鋼株式会社 | 極薄ステンレス鋼帯の製造方法および装置 |
JP3265976B2 (ja) | 1996-04-01 | 2002-03-18 | 日本鋼管株式会社 | 金属の圧延方法 |
JP4048471B2 (ja) | 2001-01-26 | 2008-02-20 | 日立金属株式会社 | カミソリ用刃材およびカミソリ用刃 |
JP2003313612A (ja) | 2002-04-23 | 2003-11-06 | Matsushita Electric Works Ltd | 結晶粒微細化マルテンサイト系ステンレス鋼の製造方法、および同ステンレス鋼を用いた刃物 |
SE527385C2 (sv) * | 2003-11-04 | 2006-02-21 | Sandvik Intellectual Property | Belagd bandprodukt av rostfrit stål för användning i lastbärande applikationer |
SE527386C2 (sv) * | 2003-12-23 | 2006-02-21 | Sandvik Intellectual Property | Belagd rostfri stålbandsprodukt med dekorativt utseende |
DE102004048172A1 (de) * | 2004-10-02 | 2006-04-06 | Ina-Schaeffler Kg | Spanlos hergestelltes dünnwandiges rostfreies Lagerbauteil insbesondere Wälzlagerbauteil |
CN102242860A (zh) * | 2010-05-14 | 2011-11-16 | 吴银森 | 具有防爆填料的民用石油液化气罐及制作方法 |
JP2012214866A (ja) * | 2011-03-30 | 2012-11-08 | Nisshin Steel Co Ltd | ステンレス鋼箔ストリップの連続式光輝熱処理方法および水平型連続光輝焼鈍炉 |
CN102430570B (zh) * | 2011-11-08 | 2013-11-20 | 东北大学 | 一种热辊温轧金属薄带和极薄带的装置及方法 |
JP5598786B1 (ja) * | 2013-04-01 | 2014-10-01 | 日立金属株式会社 | 刃物用マルテンサイト系ステンレス鋼の製造方法 |
KR20150001881A (ko) * | 2013-06-26 | 2015-01-07 | 캠프모바일 주식회사 | 동영상 멀티미디어 링톤을 제공하기 위한 방법 및 시스템 |
JP6369743B2 (ja) | 2014-03-05 | 2018-08-08 | 日立金属株式会社 | ステンレス箔の製造方法 |
-
2017
- 2017-03-08 WO PCT/JP2017/009238 patent/WO2017154981A1/ja active Application Filing
- 2017-03-08 CN CN201780016118.5A patent/CN108713067B/zh active Active
- 2017-03-08 US US16/081,733 patent/US11098393B2/en active Active
- 2017-03-08 KR KR1020187023559A patent/KR102114022B1/ko active IP Right Grant
- 2017-03-08 JP JP2018504557A patent/JP6729679B2/ja active Active
- 2017-03-08 EP EP17763321.1A patent/EP3428298A4/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10263615A (ja) * | 1997-03-25 | 1998-10-06 | Kawasaki Steel Corp | 圧延方法 |
WO2005101551A1 (ja) * | 2004-04-12 | 2005-10-27 | Matsushita Electric Industrial Co., Ltd. | 金属酸化物含有基板とその製造法 |
JP2009302203A (ja) * | 2008-06-11 | 2009-12-24 | Nippon Steel Materials Co Ltd | 磁気シールド板 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3428298A4 * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11390953B2 (en) | 2016-04-14 | 2022-07-19 | Toppan Printing Co., Ltd. | Vapor deposition mask base material, vapor deposition mask base material manufacturing method, and vapor deposition mask manufacturing method |
JP6319505B1 (ja) * | 2017-09-08 | 2018-05-09 | 凸版印刷株式会社 | 蒸着マスク用基材、蒸着マスク用基材の製造方法、蒸着マスクの製造方法および表示装置の製造方法 |
JP2019049044A (ja) * | 2017-09-08 | 2019-03-28 | 凸版印刷株式会社 | 蒸着マスク用基材、蒸着マスク用基材の製造方法、蒸着マスクの製造方法および表示装置の製造方法 |
JP2019049024A (ja) * | 2017-09-08 | 2019-03-28 | 凸版印刷株式会社 | 蒸着マスク用基材、蒸着マスク用基材の製造方法、蒸着マスクの製造方法および表示装置の製造方法 |
US11339465B2 (en) | 2017-09-08 | 2022-05-24 | Toppan Printing Co., Ltd. | Vapor deposition mask substrate, vapor deposition mask substrate manufacturing method, vapor deposition mask manufacturing method, and display device manufacturing method |
US11499235B2 (en) | 2017-10-13 | 2022-11-15 | Toppan Printing Co., Ltd. | Vapor deposition mask substrate, vapor deposition mask substrate manufacturing method, vapor deposition mask manufacturing method, and display device manufacturing method |
CN111372770A (zh) * | 2017-10-30 | 2020-07-03 | 日本制铁株式会社 | 复合板 |
CN111372770B (zh) * | 2017-10-30 | 2021-10-26 | 日本制铁株式会社 | 复合板 |
WO2022210918A1 (ja) * | 2021-03-31 | 2022-10-06 | 日鉄ケミカル&マテリアル株式会社 | 可撓性ステンレス箔および可撓性発光デバイス |
Also Published As
Publication number | Publication date |
---|---|
EP3428298A4 (en) | 2019-10-16 |
JPWO2017154981A1 (ja) | 2019-02-07 |
CN108713067A (zh) | 2018-10-26 |
EP3428298A1 (en) | 2019-01-16 |
KR102114022B1 (ko) | 2020-05-22 |
KR20180104013A (ko) | 2018-09-19 |
JP6729679B2 (ja) | 2020-07-22 |
US20190071758A1 (en) | 2019-03-07 |
CN108713067B (zh) | 2020-11-20 |
US11098393B2 (en) | 2021-08-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2017154981A1 (ja) | マルテンサイト系ステンレス鋼箔およびその製造方法 | |
CN106955892B (zh) | Fe-Ni系合金薄板的制造方法 | |
WO2016047734A1 (ja) | オーステナイト系ステンレス鋼板およびその製造方法 | |
JP2010214447A (ja) | エッチング加工用素材の製造方法及びエッチング加工用素材 | |
JP6646882B2 (ja) | メタルマスク用素材およびその製造方法 | |
JP2018178197A (ja) | 無方向性電磁鋼板及びその製造方法 | |
JP3691341B2 (ja) | 精密打抜き性に優れたオーステナイト系ステンレス鋼板 | |
WO2018150705A1 (ja) | 抵抗材用銅合金材料及びその製造方法並びに抵抗器 | |
JP2017064764A (ja) | Fe−Ni系合金薄板及びその製造方法 | |
KR102294111B1 (ko) | 메탈 마스크용 박판의 제조 방법 및 메탈 마스크용 박판 | |
JP2015193871A (ja) | Fe−Ni系合金薄板及びその製造方法 | |
JP5679580B2 (ja) | 圧延銅箔 | |
JP3723569B2 (ja) | 精密打抜き性に優れたオーステナイト系ステンレス鋼板の製造方法 | |
JP6070616B2 (ja) | 熱延鋼板の製造方法 | |
JP6975391B2 (ja) | Fe−Ni系合金薄板の製造方法およびFe−Ni系合金薄板 | |
JP4650733B2 (ja) | 圧延ロール用外層材および圧延ロール | |
JP4718273B2 (ja) | 強化α黄銅及びその製造方法 | |
JP5683432B2 (ja) | 圧延銅箔 | |
JP3727646B2 (ja) | 精密打抜き性に優れたオーステナイト系ステンレス鋼板の製造方法 | |
JP3670232B2 (ja) | 精密打抜き性に優れたオーステナイト系ステンレス鋼板 | |
JP5060253B2 (ja) | アルミニウム圧延板およびその製造方法 | |
JP2023046294A (ja) | 金属帯材の製造方法および金属帯材 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 20187023559 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020187023559 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2018504557 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2017763321 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2017763321 Country of ref document: EP Effective date: 20181009 |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17763321 Country of ref document: EP Kind code of ref document: A1 |