Jfe Steel Corporation

The Furukawa Electric Co., Ltd.

Yukihiro Matsubara

Hiroshi Matsuda

Yoshimasa Funakawa

Takeshi Yokota

Yoshiyasu Kawasaki

Masataka Yoshino

Ayako Ta

Yukio Kimura

Yoshimitsu Harada

Noriki Fujita

Hiroki Ota

Kazuhiro Seto

Keisuke Nakazono

Hirotoki Yokoi

Mitsuyuki Fujisawa

Akito Mizutani

Yuta Tamura

Hiroto Goto

Tomoyoshi Ogasahara

Sumio Kaiho

Hideto Yamaguchi

Mitsutoshi Kemmochi

Tetsuya Arakawa

Saiichi Murata

Yu Nagai

Goki Yamada

Nobukazu Kitagawa

Kazuhisa Iwanaga

Takahiro Takatsu

Yuu Nagai

Daiki Hioka

Masaki Hirai

Yoshiki Ikoma

A meandering amount arithmetically operating device of a meandering amount measurement device calculates the meandering amount of a steel sheet using a drive side edge site z(N) and a work side edge sites z(N) at a current time when a measurement reliability determination unit determines that both the drive side edge site z(N) and the work side edge sites z(N) at the current time have high reliability. When only one of the drive side edge site z(N) and the work side edge site z(N) at the current time is determined to have high reliability, the other edge site is calculated by interpolation using the number of pixels W from a sheet width updating unit with the drive side edge sites z(N) or the work side edge site z(N) at the current time having high reliability as a reference.

Steel-sheet meandering amount measurement device, steel-sheet meandering amount measurement method, hot-rolling equipment for hot-rolled steel strip, and hot-rolling method of hot-rolled steel strip

A cold-rolled steel strip manufacturing facility includes: a joining device configured to join a trailing end of a preceding steel strip and a leading end of a following steel strip to form a joined steel strip; a looper configured to store the joined steel strip; a heating device configured to heat a joint portion between the preceding steel strip and the following steel strip over an entire width direction; and a cold rolling mill configured to cold-roll the joined steel strip for which the joint portion was heated by the heating device, wherein the heating device is switchable between an output state and a non-output state, and during a period in which the joint portion passes through the heating device, is switched to the output state.

Cold-rolled steel strip manufacturing facility and method for manufacturing cold-rolled steel strip

A semiconductor-processing tape, for use in dividing an adhesive layer along semiconductor chips by expansion, having a base material film, a removable adhesive layer, and an adhesive layer, in this order, wherein the base material film has the stress values in MD and TD at the time of 5%-elongation of 5 MPa or, more, the tensile strength values in MD and TD at the time of 5%-elongation of 10 to 30 N/25 mm, and the thickness of from 70 to 150 μm, and wherein the adhesive layer has a thickness of 40 μm or more and the storage elastic modulus at 25° C. of 2000 MPa or less.

Semiconductor-processing tape

Provided is a hot-band annealing method comprising subjecting a Si-containing hot rolled steel sheet, having an oxidized scale formed on a surface of the steel sheet by hot rolling, to hot-band annealing with a hot-band annealing equipment provided with a heating zone, a soaking zone, a cooling zone, and a rapid heating device at an upstream side of the heating zone and/or in an inlet side of the heating zone, wherein the hot rolled steel sheet is heated by not lower than 50&#xb0; C. at a heating rate of not less than 15&#xb0; C./s by using the rapid heating device to improve a descaling property. Also, provided is a descaling method characterized by subjecting the Si-containing hot rolled steel sheet, after the hot-band annealing, to descaling only by pickling without requiring mechanical descaling or heating the steel sheet in the pickling process.

Hot-band annealing equipment, hot-band annealing method and descaling method for Si-containing hot rolled steel sheet

A rolling oil supply system is configured to supply rolling oil to a rolling stand selected from a plurality of rolling stands included in a tandem rolling mill, a first rolling oil supply system configured to circulate and supply rolling oil after removing wear powder generated by rolling, and a second rolling oil supply system configured to supply rolling oil containing the wear powder generated by rolling are provided. Mixed rolling oil in which the rolling oil supplied from the first rolling oil supply system and the rolling oil supplied from the second rolling oil supply system are mixed is supplied to selected fourth and fifth rolling stands.

Rolling method, production method for metal sheet, and rolling device

A mask-integrated surface protective tape with a release liner, containing: a base film, a temporary-adhesive layer, a release film, a mask material layer, and a release liner, in this order,

Mask-integrated surface protective tape with release liner

Notching equipment for a steel strip, a method of notching a steel strip, a cold rolling equipment, and a method of cold rolling that make it possible to perform cold rolling on a material without weld breaks, even if the material is a brittle material or a high alloy material such as a silicon steel sheet or a high-tensile steel sheet with high Si and Mn contents. The notching equipment includes a shearing device and a grinding device. The shearing device performs shearing on both edge portions in the steel-strip width direction including the joint to form a first notch. The grinding device grinds end surfaces of both the edge portions of the joint in the steel-strip width direction to form a second notch.

Notching equipment for steel strip, method of notching steel strip, cold rolling facility, and method of cold rolling

Provided is a material for a cold-rolled stainless steel sheet having a chemical composition containing, by mass %, C: 0.01% to 0.05%, Si: 0.02% to 0.75%, Mn: 0.1% to 1.0%, P: 0.04% or less, S: 0.01% or less, Cr: 16.0% to 18.0%, Al: 0.001% to 0.10%, N: 0.01% to 0.06% and the balance being Fe and inevitable impurities. The material has a metallographic structure including a martensite phase having an area ratio of 5% to 50% and the balance being a ferrite phase. A ferrite phase in portions extending from surface layers of front and back surfaces of a steel sheet has an average grain diameter of 20 &#x3bc;m or more and 50 &#x3bc;m or less, and a ferrite phase in a central portion of the sheet includes an unrecrystallized ferrite phase.

Material for cold-rolled stainless steel sheet

Provided is a cold-rolled ferritic stainless steel sheet having a chemical composition that contains, by mass %, C: 0.01% or more and 0.05% or less, Si: 0.02% or more and 0.75% or less, Mn: 0.1% or more and 1.0% or less, P: 0.04% or less, S: 0.01% or less, Al: 0.001% or more and 0.10% or less, N: 0.01% or more and 0.06% or less, Cr: 16.0% or more and 18.0% or less, and the balance being Fe and inevitable impurities. The metallographic structure includes a ferrite phase, in which the average grain diameter is 10 &#x3bc;m or less, in which the proportion of ferrite grains having a grain diameter of 10 &#x3bc;m or more and less than 40 &#x3bc;m is 60% or more, and in which the proportion of ferrite grains having a grain diameter of less than 5 &#x3bc;m is less than 20%.

Cold-rolled ferritic stainless steel sheet

A material for stainless steel cold rolling suitable for producing a cold-rolled stainless steel sheet that has sufficient corrosion resistance and ridging resistance as well as excellent formability and surface properties is provided. The material for stainless steel cold rolling according to the present invention contains, in terms of % by mass, C: 0.007% to 0.05%, Si: 0.02% to 0.50%, Mn: 0.05% to 1.0%, P: 0.04% or less, S: 0.01% or less, Cr: 15.5% to 18.0%, Al: 0.001% to 0.10%, N: 0.01% to 0.06%, and the balance being Fe and unavoidable impurities, wherein the material has a microstructure that includes 10% to 60% of a martensite phase in terms of area fraction, with the remainder being a ferrite phase, and the martensite phase has a hardness of HV500 or less.

Material for cold-rolled stainless steel sheet and production method therefor

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Kurashiki, Japan

Yukihiro Matsubara