lightweight wheels “Super square wheel”
Succeeded in reducing the weight of the disc
In the automobile industry, efforts are being made every day to improve fuel efficiency and reduce the weight of vehicles with the aim of reducing environmental impact. Our steel wheels for passenger cars, ``Super Square Wheels,'' reduce the amount of material used in the disk by approximately 10% by increasing the window area and improving strength by increasing the rigidity by installing a vertical wall on the outer periphery of the disk. This is a lightweight technology that has succeeded in achieving this. We contribute to reducing environmental impact by reducing material usage and improving vehicle fuel efficiency.
non-chrome pre-treatment of aluminum wheel painting
Succeeded in the industry's first chromium-free processing
The surface treatment of Aluminum wheel is designed with a focus on preventing rust and discoloration over the long term, and chromium treatment has been considered essential for rust prevention. However, in response to environmental regulations in Europe, each automobile manufacturer is paying attention to surface treatment technology that does not use heavy metals such as chromium. In response to these needs, we have repeatedly studied alternative metals for chromium and developed technology, utilized our own special treatment, and succeeded in developing chromium-free processing for the first time in the industry.
water-soluble coated tracks
Contributing to significant reduction of environmental impact
環境負荷の大幅な削減に貢献建設機械用の足回りに使われる履帯は防錆などの目的で塗装されて使用されます。従来は溶剤系塗料が用いられてきましたが、2019年に豊橋製造所の新履帯組立ラインが新設されたことに合わせて水溶性塗料に切り替えました。これによりVOC（揮発性有機化合物）の排出量を大きく抑制することができました。また、同所における履帯の素材から製品までの一貫生産を実現し、輸送量を大幅に削減することで、CO_{2}排出量の削減に貢献しています。
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- Left: SGOR® Right: wheels for passenger vehicles
The world's largest wheel for efficient mining and transportation of ore
The world's largest wheel streamlines ore mining and transportation
SGOR ® (Super Giant Off the Road Rim) is ultra-large wheels for mining equipment. This wheel is used at large-scale ore mining sites overseas. The world's largest wheel has a rim diameter of 63 inches (approximately 1.6 meters), a width of 44 inches (approximately 1.1 meters), and weighs 2.83 tons, making it approximately five times larger in diameter than wheels for passenger vehicles. By satisfying both the mobility and transportation power required by mines, we are contributing to reducing the environmental impact associated with ore mining.
We have acquired the EcoLeaf environmental label certified by the Sustainable Management Promotion Organization in our six products, including H section steel. EcoLeaf is Environmental Product Declaration (EPD) certification is one of system that uses the life cycle assessment (LCA) method to quantitatively disclose environmental information for the entire product life cycle, from resource extraction to manufacturing, distribution, use, disposal, and recycling. This enables customers to quantitatively and objectively evaluate the environmental impact of the products they use, which can be used as a basis for making decisions when purchasing environmentally friendly products.
Sophistication of recycling by Akemi Recycling Center
Akemi Recycle Center, a consolidated subsidiary with one of Japan's largest shredding plants, uses a shredder to shred scrapped automobiles and other miscellaneous goods, and recycles them into steel scrap and nonferrous scrap, as well as converting shredder dust made of plastics and rubber into carbonaceous material. We are building a recycling system that minimizes waste generation, such as using it in our electric furnaces as a substitute.
