Hitachi Metals, Ltd.

Mitsubishi Heavy Industries Limited

Mitsubishi Power, Ltd.

Ino Graphics, Inc.

Yoshiyuki Inoue

Daisuke Yoshida

Masaki Taneike

Fumio Tohyama

Yasushi Takeuchi

Tadashi Fukuda

Ikuo Okada

Hiroyuki Mitsui

Yoshitaka Uemura

Takanori Matsui

Hidetaka Oguma

Hisashi Kitagaki

Yosuke Kawachi

Masato Itoh

Kenichi Yaguchi

Tetsuji Kawakami

Hisataka Kawai

The present invention provides image processing apparatus, an image processing system and an image processing method, whereby the accuracy of evaluation can be improved. Image processing apparatus for correcting a captured image includes an image acquisition unit that acquires block pixels, an image conversion unit that converts the lightness/darkness, density, luminance and color space of the image based on the RGB values contained in the block pixels, and an output unit that outputs the converted image, and the image conversion unit further includes a binarization processing unit that binarizes the image, calculates the area ration of lightness and darkness in the image, and specifies the light and dark fields, a density conversion unit that performs conversion into wavelengths corresponding to the RGB values, a luminance conversion unit that performs conversion into luminance of the maximum wavelength that is visible to human eye, and a color-space conversion unit that performs conversion into HSV values representing a color space of color tones.

Image processing apparatus, image processing system, and image processing method

A cleaning process (blasted-particles cleaning process) includes performing, a plural number of consecutive cycles, an ultrasonic cleaning treatment including immersing a turbine rotor blade in a water basin and conducting an ultrasonic wave into the water basin to clean the turbine rotor blade, and a pressurized-water cleaning treatment including spraying pressurized water into an internal cooling flow channel after the ultrasonic cleaning treatment is performed. The cleaning process is performed after a bonding coat layer removing process of removing a bonding coat layer (first coating layer) by chemical treatment, and a cleaning process of cleaning the turbine blade by blast treatment. Heat tinging process is then performed.

Turbine blade maintenance method

A method of manufacturing a turbine blade includes a brazing treatment for joining a brazing material to a base material of a turbine blade by heating the base material having the brazing material arranged thereon and melting the brazing material, a stabilizing treatment for heating the base material having been subjected to the brazing treatment; and an aging treatment for heating the base material having been subjected to the stabilizing treatment. The brazing treatment and the stabilizing treatment are performed with a sequential heating treatment.

Method for producing turbine blade

A Ni-based alloy comprises nitrides, of which an estimated largest size is an area-equivalent diameter of 12 &#x3bc;m to 25 &#x3bc;m, the estimated largest size of the nitrides being determined by calculating an area-equivalent diameter D which is defined as D=Ain relation to an area A of a nitride with a largest size among nitrides present in a measurement field of view area Sof an observation of the Ni-based alloy, repeatedly performing this operation for n times corresponding to a measurement field of view number n to acquire n pieces of data of the area-equivalent diameter D, arranging the pieces of data of area-equivalent diameter D in ascending order into D, D, . . . Dto calculate a standardized variable y, plotting the area-equivalent diameter D and the standardized variable yon X and Y axes of an X-Y coordinate system, respectively, to obtain a regression line y=a&#xd7;D+b (wherein a and b are constants) to calculating ywhere a cross-sectional area to be predicted S is 100 mm, and substituting the obtained value of yinto the regression line to obtain the estimated largest size of the nitrides.

Ni-based alloy, ni-based alloy for gas turbine combustor, member for gas turbine combustor, liner member, transition piece member, liner, and transition piece

This method for determining whether an acidic aqueous solution is usable or not comprises: a first detection step (S) in which the solution concentration of an acidic aqueous solution resulting from pickling is determined; a second detection step (S, S) in which the concentration of a specific metal in the acidic aqueous solution resulting from pickling is determined, the metal having been contained in the coating layer; a concentrated-solution addition step (S) in which in cases when the solution concentration is equal to or less than a predetermined first threshold, a concentrated acidic aqueous solution is newly added; and a determination step (S, S) in which in cases when the concentration of the specific metal is equal to or higher than a predetermined second threshold, it is determined that the acidic aqueous solution is unusable.

Method for determining whether acidic aqueous solution is usable

Disclosed is a stainless steel containing, by mass, 0.05% or less carbon, 1.5 to smaller than 3.5% Si, 3.0% or less Mn, 6.0 to 12.0% Cr, 4.0 to 10.0% Ni, 10.0% or less Co, 6.0% or less Cu, 0.5 to 3.0% Ti, 0 to 2.0% Al, less than 0.4% Mo, not more than 0.01% nitrogen, and the balance of Fe and unavoidable impurities. Preferably, it has a hardness of not lower than 59 HRC and may contain not more than 1.0% Nb and/or not more than 1.0% Ta. Alternatively, the stainless steel may further contain not more than 0.1% of Zr. The process for producing the steel includes producing a steel having a composition as described above by a consumable electrode remelting process, and then subjecting the steel to a solution treatment at a temperature of 1000 to 1150&#xb0; C. and an aging treatment at a temperature of 400 to 550&#xb0; C., thereby aging the stainless steel to a hardness of not lower than 59 HRC.

Stainless steel having a high hardness and excellent mirror-finished surface property, and method of producing the same

Disclosed is a stainless steel containing, by mass, 0.05% or less carbon, 1.5 to smaller than 3.5% Si, 3.0% or less Mn, 6.0 to 12.0% Cr, 4.0 to 10.0% Ni, 10.0% or less Co, 6.0% or less Cu, 0.5 to 3.0% Ti, 0 to 2.0% Al, not more than 1.0% Mo, not more than 0.01% nitrogen, and the balance of Fe and unavoidable impurities. Preferably, it has a hardness of not lower than 59 HRC and may contain not more than 1.0% Nb and/or not more than 1.0% Ta. Alternatively, the stainless steel may further contain not more than 0.1% of Zr. The process for producing the steel includes producing a steel having a composition as described above by a consumable electrode remelting process, and then subjecting the steel to a solution treatment at a temperature of 1000 to 1150&#xb0; C. and an aging treatment at a temperature of 400 to 550&#xb0; C., thereby aging the stainless steel to a hardness of not lower than 59 HRC.

Growing community of inventors

Yonago, Japan

Yoshiyuki Inoue