Stainless steel coloring through oxidation without using any coloring agents.
By further oxidizing the oxide film on the stainless steel surface and thickening it, it appears beautifully colored due to the interference of light. A familiar example of color appearing under similar conditions is soap bubbles. 【Features of Stainless Steel Oxidation Coloring】 ◆ Color is a "light interference phenomenon" Although it appears to be colored, it is due to interference colors and contains no pigment components, making it harmless. ◆ No risk of foreign substance contamination The oxide film does not degrade or peel off, which allows it to be used in medical and food fields where contamination is not permitted. ◆ Excellent design quality Mechanical polishing finishes such as mirror and hairline, as well as embossing and laser marking, can be utilized as they are. ◆ Excellent corrosion resistance and weather resistance The corrosion resistance improves as the oxide film thickens. Additionally, it does not fade due to ultraviolet rays. ◆ Easy to recycle Unlike coatings or plating that must be removed during recycling, it can be recycled as is. ◇◇ For more details, please download the catalog or contact us ◇◇
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basic information
【 Color Lineup 】 Based on five colors: purple, gold, green, blue, and black, the colors that can be produced vary depending on the material of the target product. Additionally, the appearance of the colors also differs based on surface finish and material composition, so we recommend checking the colors with a prototype first. 【 Applicable Materials 】 The two materials that can produce the five colors are basically SUS304 and SUS316. Furthermore, the brighter the surface is polished, the brighter the colors will be. On the other hand, SUS430, SUS410, and SUS420 tend to have darker tones, so we generally recommend the black coloration. ◇◇ For more details, please download the catalog or contact us ◇◇
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Applications/Examples of results
Management nameplates, signboards, nameplates, display boards, name plates, award plaques, tiles and mirrors, lamp shades, fountain monuments, dustbins (Shinkansen), spoons, forks, shakers, trays, knives, scissors, outdoor goods, medical instruments, electrical components, precision machine parts, switch-related components, flower vases, Buddhist utensils, water pitchers, mufflers, wiper parts, license plates, rearview mirrors, etc.
Detailed information
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【Surface Treatment Example】 Oxidation Coloring for Improved Visibility [When the tray remains stainless steel color (left photo)] When white parts, light-colored parts, or small parts are placed in a stainless steel tray, it becomes difficult to see the parts if the tray remains stainless steel in color, making it appear as if no parts are placed at all. [When the tray is colored with oxidation coloring (right photo)] As a result of applying oxidation coloring to the stainless steel tray, even when light-colored parts or small parts are placed inside, the tray has color, making the parts much more visible. In this way, oxidation coloring is utilized in environments that handle light-colored or small parts with the aim of "improving visibility." Additionally, due to the advantages of being a "non-peeling film" and "color without coloring agents," oxidation coloring can be safely used in fields such as food and medical industries, where contamination is a serious concern.
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【Surface Treatment Case】 Oxidation Coloring of Medical Tweezers Oxidation coloring technology is utilized in a wide range of fields such as dentistry, internal medicine, surgery, and orthopedics, and we believe it is a "cutting-edge color treatment technology that is friendly to both people and the environment" that can meet the needs of the medical instrument industry, which requires a small variety of products in small quantities. It is mainly used for purposes such as identification by treatment type and improving corrosion resistance, and it also alleviates the cold feeling of medical instruments with metallic luster by coloring them through oxidation coloring.
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Company information
Our company has been engaged in surface treatment technology for over 60 years, incorporating the philosophies of ISO 14001 and ISO 9001 into our processes, from metal houseware products to semiconductor manufacturing equipment components. Through thorough quality control and technological development, we provide surface treatment processing that meets the demands of the times. Our electrolytic composite polishing has received high praise, including a letter of appreciation for contributing to the completion of the high-intensity proton accelerator facility "J-PARC," which was jointly constructed by the Japan Atomic Energy Agency (JAEA) and the High Energy Accelerator Research Organization (KEK). We perform various surface treatments that maximize the qualities of different metal materials, such as electrolytic polishing, electrolytic composite polishing, coloring of stainless steel and titanium, and pickling. In recent years, we have also been involved in surface treatment processing for materials like magnesium, aluminum, and titanium. Leveraging the expertise in surface treatment that we have cultivated in the Niigata Prefecture Tsubame-Sanjo region, which is well-known for metal processing, we are here to assist you in solving your problems.