Complex shapes can achieve uniform gloss and high precision smoothness through non-contact processing using chemical reactions. There is no concern about deformation, and it can also handle large-scale processing.
Toyo Rika's chemical polishing is a surface treatment technology that dissolves metal surfaces through chemical reactions with chemical solutions, achieving a uniform finish without contact. Since no physical force is applied, there is no concern about deformation or scratches, allowing for stable processing of ultra-thin sheets and complex-shaped parts. It removes fine surface irregularities and burrs, resulting in an appearance that excels in glossiness and cleanliness. The process reaches areas and details that buff polishing cannot, and it is characterized by minimal finish inconsistencies. Dimensional changes are also kept to a minimum, making it ideal for finishing precision parts and products that require assembly and cleanliness in subsequent processes. Additionally, the processing speed is fast, making it suitable for mass production and offering excellent cost performance. The main targets are stainless steel (such as SUS304 and SUS316), with a wealth of application experience in mechanical parts, covers, frames, and sanitary components after cutting, pressing, and welding processes. It is widely adopted in fields where cleanliness and appearance quality are emphasized, such as medical devices, food manufacturing equipment, and precision equipment. At Toyo Rika, we thoroughly design processing conditions and quality control according to applications, allowing for flexible responses from small lots to mass production.
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basic information
Compatible materials: SUS304, SUS316, SUS316L, other stainless steels Target shapes/forms: ultra-thin plates, punching materials, piping, complex shape parts, frames, etc. Processing method: non-contact metal dissolution through chemical reaction (buffless, stress-free treatment) Applicable areas: external surface / internal surface / full surface treatment available (inner diameter, pore areas, around welds, etc.) Smoothness and finish quality: glossy finish / burr removal / fine unevenness removal / uniform surface treatment Dimensional change: minimal (range of several micrometers to several tens of micrometers), adjustable according to part specifications Risk of deformation or scratches: extremely low due to non-contact processing / finishing possible without re-polishing Appearance after processing: mirror finish to semi-gloss (selection required), options for gloss enhancement after oxide film removal Supported lot sizes: can accommodate from small prototype of 1 piece to mass production, regardless of size Quality control measures: visual inspection / dimensional measurement / surface observation (microscope) / record and photo documentation, etc. Options: vacuum packaging / label attachment / inspection certificate attachment / identification marks, etc. Remarks: special requirements, finish specifications, application conditions, requests for prior sample testing, etc.
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Applications/Examples of results
【Target Industries】 Medical devices / Food machinery / Semiconductor manufacturing equipment / Precision machinery / Research and development equipment, etc. 【Target Parts and Product Names】 Piping components, thin sheet covers, enclosures, sanitary parts, pressed products, welded structures, etc. 【Processing Objectives】 Deburring, gloss finishing, improved cleanability, removal of welding discoloration, dimensional stabilization, improved appearance quality. 【Applicable Shapes and Features】 Thin-walled, complex shapes, interior processing desired, small diameter piping, perforated materials, etc. 【Past Delivery and Adoption Achievements】 Sterilization-compatible parts for medical device manufacturers / Cover parts for food filling lines / CVD equipment parts, etc. 【Lot Size and Frequency】 Can accommodate from small-scale prototypes of 1 piece to mass production, regardless of size. 【Remarks and Special Notes】 Request for inspection report attachment, clean packaging, label application instructions, inspection conditions, etc.
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Company information
Toyohashi Chemical Co., Ltd. is a comprehensive technology company that consistently responds to a wide range of needs, from contract processing to the manufacturing of surface treatment agents and processing equipment, the development of automatic inspection devices, and even technical consulting, as a leading company in metal surface treatment. We have established a consistent production system utilizing precise electro-polishing and cleaning technologies, vacuum packaging and assembly in clean rooms, and advanced processing techniques. We have gained high trust in fields where quality is essential, such as semiconductors, medical devices, and food-related equipment. As a partner that responds to all surface treatment challenges with technology and flexible adaptability, we continue to support our customers' manufacturing endeavors.