Kawasaki Steel Corporation

Other

Jfe Steel Corporation

Makoto Shimura

Tomohiro Ohta

Yoichi Tobiyama

Tadashi Nakano

Kyoko Fujimoto

Hisao Yasuhara

Takashi Saito

Susumu Satoh

Kazuaki Kyono

Kenji Abiko

Masaya Takahashi

Takashi Niida

Yuji Hanawa

Hideo Iwai

A sheet discharging device has a conveying weight for pressing a conveyed sheet to a caterpillar belt. The pressing force of the weight is increased both when the sheet is discharged from the caterpillar belt to a placement tray, and when the sheet is switched back and conveyed to the bottom of the caterpillar belt. The pressing force of the weight is increased concurrently with the driving of a paddle provided at an outlet of the placement tray. The pressing force is increased by a rubber piece provided on a paddle driving shaft that rotates out of phase with the paddle, so as to engage and press the conveying weight at a predetermined time. The device is capable of reliably conveying a wide variety of sheets onto a tray and transferring the conveyed sheets to a predetermined tray position.

Sheet discharging device and sheet postprocess apparatus using the same

An alloyed hot-dip galvanized steel sheet is obtained by forming a hot-dip galvanized layer on the surface of the steel sheet and then alloying the steel sheet. The steel sheet exhibits a potential of &minus;850 mV or less when it is immersed in a zinc sulfate-sodium chloride electrolyte. Alternatively, when it is electrolyzed according to constant potential electrolysis process in a zinc sulfate-sodium chloride electrolyte at a potential in a range from &minus;940 mV to &minus;920 mV, the quantity of electricity consumed is less than or equal to 0.5 C/cm . The steel sheet exhibits excellent processability and particularly excellent sliding property.

Alloyed galvanized steel plate having excellent slidability

A method for determining a quantity of each of alloy phases in the plating layer includes subjecting each alloy phase in the plating layer to constant potential electrolysis in each of a plurality of ranges of potentials obtained on the basis of the immersion potential of each alloy phase and the immersion potential of a basis metal, by using a plated metal material having different kinds of alloy phases in the plating layer as the anode, to determine the quantity of each alloy phase in the plating layer on the basis of the quantity of electricity consumed in each range of the potentials during the electrolysis.

Method for determining alloy phase in plating layer and method for evaluating sliding property of alloy galvanized steel plate

The present invention provides a pre-treatment apparatus for an analytical metal sample, the apparatus including (1) a treatment chamber having a sample charging port which can be opened and closed and provided at the top of the chamber, a sample discharging port which can be opened and closed and provided at the bottom of the chamber, and a gas inlet and gas outlet, (2) a sample carrying bar joined to a sample holder also used as a sputtering electrode, and provided to pass through at least one side wall of the treatment chamber so as to be substantially horizontally movable and axially rotatable, and (3) a sputtering counter electrode at least having portions arranged opposite to each other in a region not inhibiting the charge and discharge of an analytical metal sample so that the sample holder can be arranged in the counter electrode. The present invention also provides a pre-treatment method capable of simply cleaning the surface of the analytical metal sample by using the pre-treatment apparatus and preventing re-contamination of the cleaned sample by exposure to the air or the like. Furthermore, the present invention provides an analysis apparatus provided with the pre-treatment apparatus to permit high-accuracy quantitative determination of trace elements of metals.

Method of treating metal analysis sample and device thereof

Free fluorine is measured in a hydrofluoric acid-containing solution with a coexistent metallic ion based on a total fluorine concentration, a total acid concentration, a metallic ion concentration, the equilibrium constant of hydrofluoric acid, and equilibrium constants of metal fluoride complexes. It is possible to accurately analyze free fluorine in a hydrofluoric acid-containing solution without being affected by a coexistent metal and by the passage of time. This technique may be used to accurately control the concentration of free fluorine in a hydrofluoric acid-containing mixed acid pickling solution at the production site of a stainless steel so that improvement in descaling capability as well as reduction in the amount of chemical materials can be achieved.

Method for analyzing free fluorine in solutions containing hydrofluoric acid solution, and apparatus for practicing the method

A coating solution for forming an insulating film used in production of semiconductor devices includes siloxanes represented by a general formula:

Growing community of inventors

Chiba, Japan

Makoto Shimura