Pioneers of Polishing: Introduction to Tohken's Technology [New Era of Polishing EGR]
EGR
We deliver stainless steel, high alloy, titanium, and other steel materials with the highest quality polishing finish.
We would like to introduce Tokyo Stainless Polishing Industry Co., Ltd.'s original polishing technology, EGR (Electrolytic Grinding Reducing). EGR is an original polishing technology that combines grinding with abrasive wheels and neutral salt electrolytic polishing. [PR Points] ★ With EGR, hot-rolled materials are finished to a surface roughness equivalent to cold-rolled material 2B. Furthermore, the surface is polished even smoother than cold-rolled material 2B, significantly reducing pinholes. ★ By utilizing EGR as a base polishing method, the quality of subsequent diverse polishing finishes is greatly improved. We deliver surface quality suitable for materials used in food, sake storage, and medical tanks that require stringent surface quality. ★ EGR achieves scale removal and high-quality finishing for difficult-to-grind materials such as duplex steel, high-alloy steel, and titanium. * Please feel free to contact us for more details. * For information on polishing finish types, EGR, and finishing polishing technology, please refer to the PDF.
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basic information
【EGR (Electrolytic Grinding Reducing)】 〇 The high-temperature oxidation scale on materials after hot rolling and annealing can be descaled with low environmental impact without using acids. 〇 Regardless of whether the surface has high-temperature oxidation scale or is pickled, a reduction of about 30μm per pass of the head can be achieved. EGR grinding is applicable to all stainless steel grades and can also achieve polishing effects on high-alloy and pure titanium, among others. *For more details, please feel free to contact us.
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Applications/Examples of results
Grinding of difficult-to-grind materials: thick stainless steel, duplex steel, high alloys, titanium. Pre-polishing for high-end finish products: mirror-polished items, construction materials, monuments, street furniture, signs. Products that cannot have pit residues: materials for food, wine storage, and medical tanks, with significantly improved corrosion resistance. We provide polishing and thickness adjustment tailored to your application. Please feel free to contact us. - Japan Society of Metals and Materials, "37th Technology Development Award" - Domestic patents: "Method for manufacturing stainless steel plates" and 2 others, totaling 3. - EP patents: "Stainless Steel and surface treatment method for stainless steel" and 2 others, totaling 3. - Chinese patent: "Method for manufacturing steel materials." - Korean patent: "Method for manufacturing steel materials."
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Company information
Founded as Tokyo Stainless Polishing Industry in Minamisenju, Tokyo in 1951. In 1960, it was reorganized into a corporation and adopted its current name. Since then, it has expanded its factories to include the Tokyo headquarters, as well as locations in Chiba (74 employees), Fukuoka (65 employees), and Sapporo (31 employees), continuing to this day. We provide stainless steel processing with the industry's leading equipment and a consistent quality control system from polishing to cutting through our unique production line. We take pride in our long-standing contract processing achievements directly from stainless steel manufacturers and respond to our customers' diverse needs for stainless steel with the knowledge, experience, and technology developed over our 71 years of operation. With excellent logistics access to various cities, we offer service center functions tailored to the regions from our bases in Chiba, Fukuoka, and Sapporo. As a company specializing in polishing and refining processing, we are committed to challenging ourselves to contribute to society in ways that only we can.
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