Nippon Steel Sumitomo Metal Corporation

Nippon Steel Corporation

Renesas Electronics Corporation

Toyo Engineering Corporation

Asahi Denka Kogyo Kabushiki Kaisha

Toray Opelontex Co., Ltd.

Koji Hirano

Hirofumi Imai

Tatsuhiko Sakai

Hideyuki Hamamura

Satoshi Arai

Yasushi Hasegawa

Atsushi Sugihashi

Yoshiyuki Ushigami

Shohji Nagano

Yoshio Nakamura

Kakeru Kimura

Shoichi Hamada

Shuichi Yamazaki

Yasushi Sasaki

Shinji Takeda

Toshihiro Tanaka

Yasushi Fujita

Hisashi Miyakawa

Kazuyuki Tashiro

Osamu Nittani

Masahito Kajiwara

Fumitake Mori

Takuro Ichikawa

Naoki Mizutani

Kazuoki Urabe

Kageo Yoshida, Deceased

Seiichiro Cho

In a laser processing apparatus for refining magnetic domains of a grain-oriented electromagnetic steel sheet by setting a laser beam to be focused on the grain-oriented electromagnetic steel sheet and scanned in a scanning direction, the laser beam focused on the grain-oriented electromagnetic steel sheet is linearly polarized light, and an angle between a linear polarization direction and the scanning direction is higher than 45&#xb0; and equal to or lower than 90&#xb0;.

Laser processing apparatus

A semiconductor device includes: a sensor detecting electric capacitance of a touch key group comprising a plurality of touch keys arranged in a matrix; and a control device configured to perform character recognition based on a change in the electric capacitance of the plurality of touch keys detected by the sensor and on a sampling pattern that is time-series data of a loci.

Semiconductor device, character recognition device, and character recognition methods

An ultrasonic receiver receives ultrasonic waves reflected at a plurality of portions of the body of a person to be measured, and thus the person to be measured needs to input the approximate height of himself/herself. An electrostatic capacitance sensor includes a transmission electrode and a reception electrode. The electrostatic capacitance sensor measures a mutual capacitance between the transmission electrode and the reception electrode by a mutual capacitance method. A variable frequency pulse generator generates a pulse supplied to the transmission electrode. A control apparatus allows the variable frequency pulse generator to sweep the frequency of the pulse and allows the electrostatic capacitance sensor to measure the mutual capacitance to identify a frequency at which the measured mutual capacitance is minimized. The control apparatus obtains the height of a person to be measured on the basis of the identified frequency.

Height measuring apparatus, health care device, and rotary gate

In a laser processing apparatus for refining magnetic domains of a grain-oriented electromagnetic steel sheet by setting a laser beam to be focused on the grain-oriented electromagnetic steel sheet and scanned in a scanning direction, the laser beam focused on the grain-oriented electromagnetic steel sheet is linearly polarized light, and the angle between the linear polarization direction and the scanning direction is equal to or higher than 0&#xb0; and lower than 45&#xb0;.

A method of manufacturing a grain-oriented electrical steel sheet, includes: a laser processing process of forming a laser processed portion by irradiating a region on one end side of a steel sheet in a width direction after being subjected to a cold rolling process with a laser beam along a rolling direction of the steel sheet; and a finish annealing process of coiling the steel sheet with the laser processed portion formed thereon in a coil shape and performing a finish annealing on the coil-shaped steel sheet. In the laser processing process, a melted-resolidified portion having a depth of greater than% and equal to or less than% of a sheet thickness of the steel sheet is formed by the irradiation of the laser beam at a position corresponding to the laser processed portion.

Grain-oriented electrical steel sheet and method of manufacturing grain-oriented electrical steel sheet

A grain-oriented magnetic steel sheet includes grooves each of which extends in a direction intersecting a transportation direction, the grooves being formed at predetermined pitches PL in the transportation direction by laser beam irradiation, in which a relationship between a standard deviation value D and the pitch PL satisfies the following expression (1), the standard deviation value D being a standard deviation of distances between a linear approximation line, which is obtained from a center line of each of the grooves in a groove width direction by a least-squares method, and respective positions on the center line, and an average angle formed between tangent lines of the respective positions on the center line and a direction perpendicular to the transportation direction is more than 0&#xb0; to 30&#xb0;.[Expression 1]0.02&#x2264;()&#x2003;&#x2003;(1)

Grain-oriented magnetic steel sheet and method of producing the same

Provided is a fragrance-retaining fiber that, after absorption of a fragrance component, retains the fragrance even though a long period of time has passed. In particular, provided is a fragrance-retaining polyurethane-based fiber having, 48 hours after absorption of a fragrance component, a total fragrance component emission of from 0.1 &#x3bc;g/g&#xb7;h to 1000 &#x3bc;g/g&#xb7;h.

Polyurethane fiber

A silicon steel sheet () containing Si is cold-rolled. Next, a decarburization annealing () of the silicon steel sheet () is performed so as to cause a primary recrystallization. Next, the silicon steel sheet () is coiled so as to obtain a steel sheet coil (). Next, an annealing () of the steel sheet coil () is performed through batch processing so as to cause a secondary recrystallization. Next, the steel sheet coil () is uncoiled and flattened. Between the cold-rolling and the obtaining the steel sheet coil (), a laser beam is irradiated a plurality of times at predetermined intervals on a surface of the silicon steel sheet () from one end to the other end of the silicon steel sheet () along a sheet width direction (). When the secondary recrystallization is caused, grain boundaries passing from a front surface to a rear surface of the silicon steel sheet () along paths of the laser beams are generated.

Grain-oriented electrical steel sheet and manufacturing method thereof

A laser processing apparatus includes a laser irradiation unit has a structure providing an intensity distribution of the laser beam focused on the grain-oriented electrical steel sheet on a cross-section in a direction perpendicular to the scanning direction on the grain-oriented electrical steel sheet so as to satisfy Ib/Ia&#x2266;2, where Raand Raare distances between the centroid of the intensity distribution and positions at which the intensity integration value from the centroid of the intensity distribution is 43% of the total intensity integration value, beam intensities Iaand Iaare intensities of the laser beam corresponding to Raand Ra, respectively, Ia is the average value of Iaand Iaand Ib is the beam intensity at the centroid of the intensity distribution.

Laser processing apparatus and laser irradiation method

This invention relates to a method producing a common rail excellent in fatigue strength from an inexpensive steel which uses as the material of the common rail a steel for high-strength liquid phase diffusion bonding having good toughness and fatigue strength, which steel contains, in mass %, C: 0.01 to 0.3%, Si: 0.01 to 0.5%, Mn: 0.01 to 3.0%, Cr: 1.0 to 12.0% and Mo: 0.1 to 2.0%, further contains, in mass %, V: 0.01 to 1.0%, B: 0.0003 to 0.01%, Ti: 0.01 to 0.05% and N: 0.001 to 0.01%, has P content limited to 0.03% or less, S content to 0.01% or less and O content to 0.01% or less, further has total content of grain boundary segregated embrittling elements As, Sn, Sb, Pb and Zn limited to 0.015% or less, and a balance of unavoidable impurities and Fe.

Method of producing common rail and locally reinforced common rail

[Object] To provide a laser processing apparatus and a laser processing method which are capable of reducing roughness of a cut surface in laser cutting using laser beams transmitted through optical fibers. [Solution] A laser processing apparatus according to the present invention includes at least one laser oscillator configured to emit laser beams, a plurality of optical fibers configured to transmit the emitted laser beams, and at least one optical element configured to focus the laser beams emitted from the optical fibers and irradiate a surface of a workpiece with the focused laser beams. At output ends of the optical fibers, the output ends of the plurality of optical fibers are placed in one or a plurality of ring shapes. Laser beams transmitted through the plurality of optical fibers placed on at least an outermost ring of the ring shapes each have a linear polarization, and polarization directions of the linearly polarized laser beams emitted from the output ends of the plurality of optical fibers are arranged radially around a center of the outermost ring.

Laser processing apparatus and laser processing method

A laser apparatus of the present invention has a first laser oscillator that emits a first laser beam; a passive fiber that is a double-clad fiber that transmits the first laser beam through a core; and a second laser oscillator that emits a second laser beam that is coupled into inner cladding of the passive fiber. Additionally, a laser materials processing apparatus of the present invention is provided with the laser apparatus; and an irradiation optical system having a collimating lens and a condenser lens.

Laser apparatus and laser materials processing apparatus provided with same

To provide a grain oriented electrical steel sheet that can securely suppress propagation of lateral strain, and can make a product even from a portion where the lateral strain occurs. A grain oriented electrical steel sheet of the present invention has a linearly altered portiongenerated in a glass coating filmat one of side edges of a steel sheet, in a continuous line or in a discontinuous broken line in a direction parallel with a rolling direction of the steel sheet, and having a composition different from a composition in other portions of the glass coating film. An average value of a deviation angle of a direction of an axis of easy magnetization of crystal grains relative to the rolling direction is 0&#xb0; or more and 20&#xb0; or less in a base metal iron portion of the steel sheetat a position along a width direction of the steel sheet, the position corresponding to the linearly altered portion

Grain oriented electrical steel sheet and method of producing grain oriented electrical steel sheet

The present invention provides a method of producing a common rail having a common rail body and a holder which include chemical components of 0.01-0.3 mass % of C, 0.01-0.5 mass % of Si, 0.01-3.0 mass % of Mn, 0.0003-0.01 mass % of B, 0.001-0.01 mass % of N, over 0.01-0.5 mass % of Al, 0.01-0.05 mass % of Ti, P limited to 0.03 mass % or less, S limited to 0.01 mass % or less, O limited to 0.01 mass % or less, a total content of As, Sn, Sb, Pb, and Zn limited to 0.015 mass % or less, the balance including Fe and inevitable impurities, in which the TLB value is 0.001% or more, the method including: inserting an insert metal; performing liquid phase diffusion bonding; performing laser-peening; and removing a surface layer.

Growing community of inventors

Tokyo, Japan

Koji Hirano