Electroplating Technology Using Solid Electrolyte Membranes for the Realization of Environmentally Harmonized Surface Treatment Processes

Masaaki Nishiyama･Akira Kato (Toyota Motor)･Hitoshi Inoue･Katsuya Houkibara･Hiroki Sato (Mikado Technos)

We have developed a new electroplating process called "Solid Electro-Deposition method" that significantly reduces CO2 emissions and waste liquid, thereby lowering environmental impact. This method features metal ion transport via a cation exchange membrane, achieving high deposition rates and uniform film thickness. With a dedicated hard mask, it enables direct formation of fine wiring, which is expected to reduce production costs. In this presentation, we report the details of the process principles.

Cleaning Technology of Plating Using Ultrasonic Mist for the Realization of Environmentally Harmonized Surface Treatment Processes

Kosei Goto･Takahiro Hiramatsu (TMEIC)･Masaaki Nishiyama･Akira Kato (Toyota Motor)

In recent years, the plating process has required reductions in the high environmental impact caused by the massive use of water and cleaning agents in the plating process and its preceding and following processes, as well as the effluent treatment. In response to this issue, we have developed a new cleaning process using fine mist generated by ultrasonic vibration. We report on the experimental results of the mist cleaning processes for rinsing, degreasing, and acid cleaning, and so on.

Development of mass production process for cold spray valve seat
-Application to the third generation e-POWER engine-

HIROHISA SHIBAYAMA･HIDENOBU MATSUYAMA･DAIKI HIROBE･TAKASHI IZAWA･HIRONAO NETSU･SHOTARO TAKAHASHI･JUNICHI ARAI･HAYATO HIRAYAMA･YOSHINORI IZAWA (Nissan Motor)

Nissan Motor Co., Ltd. had been working on laser cladded valve seat, but many issues such as cracks and porosity caused by cast raw materials made mass production difficult. However, by adopting the cold spray, solid-state bonding process, these issues were able to resolve. Additionally, the mass production system that can be added to the Cylinder Head machining line was developed and applied to the third-generation e-POWER engine.