Nippon Steel Sumitomo Metal Corporation

Nippon Steel Corporation

Carl Mahr Holding Gmbh

Tatsuro Honda

Seiji Hiraoka

Chihiro Uematsu

Kenta Sakai

Takanori Tanaka

Naoki Tajima

Koki Tanaka

Yoshihiro Serizawa

Masaki Yamano

Susumu Nakagawa

Shinichi Fukunaga

Toshihiko Murakami

Yutaka Wakasu

Mutsumi Tanida

Yoshito Isei

Yoichi Inoue

Yasuhiro Mizuno

Shota Ishitsuka

Takenori Kuramoto

Manabu Adachi

Shinichi Oshima

Yasuhisa Kasa

Takeshi Okawa

Yohichi Haraguchi

Kenshiro Oie

Hisayoshi Tachibana

Konrad Friedrich

Erhard Gruener

Nozomu Yoshihiro

A thread shape measuring apparatus includes: a first illuminating unit that has an optical axis orthogonal to a cross section including a thread axis, and illuminates the thread portion; a second illuminating unit that has an optical axis that forms an angle &#x3b8; larger than a lead angle &#x3b3; of the thread portion with respect to the direction orthogonal to the cross section and illuminates the thread portion; an image-capturing unit that has a visual axis parallel to the optical axis of the first illuminating unit, includes a telecentric lens, has a focusing position matching the cross section, and detects, out of the light emitted from the first illuminating unit or the second illuminating unit, light that has not been blocked by the thread portion to capture an image of the detected light; and an operation unit that calculates a shape of the thread portion based on the captured image.

Thread shape measuring apparatus and measuring method

A cooling device cooling an undersurface of a hot rolled steel sheet that is being transported on transport rolls after finish rolling of a hot rolling step includes: width divided cooling zones that are a plurality of cooling zones into which a whole cooling zone is divided in a sheet width direction; divided cooling sections that are a plurality of cooling zones into which each of the width divided cooling zones is divided in the rolling direction; a water nozzle spraying cooling water over each of undersurfaces of the divided cooling sections; a switching mechanism switching the cooling water between impinging and not impinging on the divided cooling sections; a width direction thermometer measuring a temperature distribution in the sheet width direction; and a controller controlling operation of the switching mechanism.

Cooling device for hot rolled steel sheet and cooling method for the same

The primary object of the present invention is to provide a mold for continuous casting including a temperature detection unit which can detect the temperature of a copper plate of the mold with high precision, and can be easily inserted into and pulled out of the copper plate. The present invention includes: a main body; and a temperature detection unit which is inserted in an insertion hole in the main body, and detects temperature inside the mold. The temperature detection unit includes: an FBG sensor inserted in a protection tube which can be deformed in a radial direction; and a support member which supports the FBG sensor along the longitudinal direction. At a temperature detection point, the protection tube in which the FBG sensor is inserted is held between a stretched member in the support member and an inner surface of the insertion hole.

Mold for continuous casting

The present invention provides a method for measuring an end portion shape of a threaded pipe or tube P, the method including: a thread axis detection step; a laser light positioning step; a laser light image capture step; and a shape calculation step. In the laser light positioning step, the light sourceand the image capture deviceare moved together so that: the optical axis LA of the light source is located so as to pass through a measurement point D (X1, Y1, Z1) on the thread axis A, the measurement point being located in the measurement target region within a plane NP including the thread axis; and the laser light L extends in a slit-like form within the plane.

Method for measuring end portion shape of threaded pipe or tube

A surface temperature measuring apparatus comprising a radiation thermometer configured to detect thermal radiation light emitted from a surface of a temperature measurement target material in a cooling process with water, a housing having an opening on a temperature measurement target material side, the housing storing, in an inside of the housing, at least a light receiving unit of the radiation thermometer among structural elements of the radiation thermometer, and an optical glass that is fit and sealed in the inside of the housing between the temperature measurement target material and the light receiving unit of the radiation thermometer, the optical glass being configured to transmit the thermal radiation light. The optical glass has, on the temperature measurement target material side, an end surface adjacent to the surface of the temperature measurement target material. A surface temperature measuring method is also provided.

Surface temperature measuring apparatus and surface temperature measuring method

The present invention provides a method for automatically measuring a thread element at an end portion of a pipe or tube P after thread processing, on a thread processing linein which thread processing is performed on the end portion of each pipe or tube P which is successively conveyed, comprising: a cleaning step of cleaning the end portion of the pipe or tube by a thread cleaning apparatusafter the thread processing; a drying step of drying the end portion of the pipe or tube P cleaned in the cleaning step by a thread drying apparatus; and a measuring step of measuring the thread element at the end portion of the pipe or tube P by an automatic thread element measurementafter drying, wherein the end portion of the pipe or tube is put under a clean atmosphere at least in the measuring step.

Method for measuring thread element at end portion of pipe or tube

A main object of the present invention is to provide a method capable of measuring surface temperatures of a plurality of points of cast slab at a secondary cooling zone of a continuous caster with a good accuracy and at low cost. The method comprises the steps of inserting one end of a plurality of optical fibersrespectively to nozzlesand tubes, and installing each nozzle between support rolls that support the cast slab, while spraying purge air from each nozzle toward a surface of the cast slab, receiving a thermal radiation light from the cast slab at the one end of each optical fiber, gathering other ends of the optical fibersin a bundle to take images including a core image of the other end of each optical fibers by an imaging means, and calculating the surface temperature of the cast slab.

Method and apparatus for measuring surface temperature of cast slab

A first thread feature is measured by detecting with an optical sensorlight that reaches from a light sourcelocated on the opposite side of a pipe axis and runs substantially in parallel to thread grooves A. A contact probeof a contact sensoris contacted with a thread flank surface Ato detect the space coordinates of the contact probeat the time of contact, so that a second thread feature is measured. The first and second thread features thus detected are combined with each other by a processor, and thread features of the thread provided as a measurement object are thereby calculated.

Apparatus, system, and method for measuring thread features on pipe or tube end

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Tokyo, Japan

Tatsuro Honda