Mitsubishi Heavy Industries Limited

Hiroaki Mikawa

Kohei Kawasaki

Hiromitsu Nagayasu

Takumi Sato

Masaru Chiyomaru

Masahiko Nagai

Hidehiko Tajima

Shigehiro Sugiyama

Yusuke Takagi

Mitsuhiro Ishigaki

Yuichi Okuzaki

Taisuke Miyazaki

Koji Imasaka

Akihiro Sakanishi

Kaoru Egawa

Ayako Ureshino

An acidic treatment liquid processing apparatus includes: a tank having an interior space; a diaphragm permeable to a metal cation and separating the interior space of the tank into a first chamber and a second chamber; a first electrode disposed in the first chamber; a second electrode disposed in the second chamber; a power supply configured to apply a voltage while using the first electrode as an anode and the second electrode as a cathode; a first liquid passing part configured to pass an acidic treatment liquid containing a dichromate ion and a metal cation into the first chamber; and a second liquid passing part configured to pass an acid aqueous solution into the second chamber.

Acidic treatment liquid processing apparatus, acidic treatment liquid processing method, surface treatment system, and surface treatment method

Provided is a concentration monitoring system which allows continuous concentration monitoring of a processing tank. The concentration monitoring system is provided with a first cycle in which a sample of a processing liquid to which a chemical has been added is taken from a processing tank in which the processing liquid is stored and supplied to a concentration meter which measures the concentration of the chemical, a second cycle in which a chemical solution having a known concentration of the chemical is supplied to the concentration meter, and a control device which controls the first cycle to evaluate the concentration of the chemical in the processing tank on the basis of the concentration of the sample measured by the concentration meter and controls the second cycle to evaluate the precision of the concentration meter on the basis of the concentration of the chemical solution measured by the concentration meter.

Concentration monitoring system, concentration management system, and concentration monitoring method

A surface treatment apparatus includes a treatment vessel including a treatment space in which a metal component is disposed, a spray nozzle that supplies mist of a non-chromate conversion treatment liquid to the treatment space, and a circulation device that collects the non-chromate conversion treatment liquid from the treatment space and supplies the non-chromate conversion treatment liquid to the spray nozzle.

Surface treatment apparatus and surface treatment method

Growing community of inventors

Tokyo, Japan

Hiroaki Mikawa