三和産業 List of Products and Services

If you have concerns related to polishing, such as "not enough manpower, not enough technology, no time," please consider using our "On-Site Polishing Service." We accommodate one-day use, emergency requests, and long-term use on a monthly basis. We dispatch highly trained polishing professionals anywhere in the country. Rest assured that the personnel we send are all skilled individuals who have honed their techniques at Sanwa Sangyo and are well-versed in various polishing processes. We respond to any request with reliable technology. 【Services Offered (Partial)】 ■ Service Area: Nationwide in Japan and overseas ■ Applicable Equipment: Supports non-mobile equipment and super-large equipment ■ Personnel: Operated by workers with various licenses and safety training ■ Work Content: Buff polishing, electro-polishing, electro-composite polishing ■ Surface Treatment: Low to high grit polishing, ultra-mirror finishing, hairline processing, sludge removal *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

"Electrolytic Polishing of Titanium" is a technology developed by Sanwa Industry that enables electrolytic polishing and mirror finishing of titanium materials, which has been considered difficult until now. The research and practical application of this technology have been achieved through a collaborative team between Sanwa Industry, Yamaguchi University Faculty of Engineering, Kyushu Dental University, and the Yamaguchi Prefectural Industrial Technology Center. Due to its lightweight, durability, high design potential, and non-allergenic properties, titanium is a material with demand in various fields, and it is believed that this technology will further advance its application and dissemination. [Issues and Solutions for Mirror Finishing of Titanium through Electrolytic Polishing] ■ Issues - The insulating viscous film generated on the material surface during electrolytic polishing interrupts the current and stops the electrolytic action. ■ Solutions - Use an alcohol-based electrolytic polishing solution that does not produce a viscous film even when current is applied. - The alcohol-based electrolytic polishing solution is neutral, non-toxic, and does not pose an explosion risk. *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

The reason stainless steel is resistant to rust is thanks to the "passivation film" that covers its surface. This thin film prevents oxygen from penetrating to the interior, protecting the material from rust and corrosion caused by oxidation. "Passivation treatment" refers to the process of artificially enhancing the passivation film that stainless steel possesses, and it occupies an important position in metal finishing alongside polishing. Additionally, there are no changes in the appearance or dimensions of the material, allowing for long-term quality maintenance. 【Features】 ■ By artificially enhancing the oxide film, the inherent rust resistance of stainless steel is dramatically improved. ■ It protects the material not only from corrosion but also from corrosion due to high oxidative environments in steam conditions. ■ There are no changes in the appearance or dimensions of the material, enabling long-term quality maintenance. *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

This document is a list of new materials for electrolytic polishing. It includes comparisons of #600 wet polishing and electrolytic polishing for steel, stainless steel, and pure metals. Polishing is performed by preferentially dissolving protruding parts by passing electricity through the product in a solution, thereby smoothing the surface. [Items included] ■ Steel ■ Stainless steel ■ Pure metals *For more details, please refer to the PDF document or feel free to contact us.

• Other abrasives

This document presents a comparison of test results for new passivation treatments. It compares data from SUS304 and SUS303, which underwent tests such as "hydrochloric acid immersion test" and "pitting test," along with data from the new passivation treatment of SUS303. Each test type is introduced by category. [Items Included] ■ Hydrochloric Acid Immersion Test (4% Acetic Acid 1% NaCl) ■ Elution Test (4% Acetic Acid 1% NaCl) ■ Cr/Fe ■ Pitting Test (3.5% NaCl) *For more details, please refer to the PDF document or feel free to contact us.

• Other surface treatment equipment

"Electrolytic composite polishing" is a surface polishing method that combines the "metal dissolution effect" through electrolysis and the "mechanical abrasion effect" through abrasives. The construction method involves removing only the film formed on the convex parts of the workpiece (anode) due to the passivation layer generated by the electrolytic phenomenon, and selectively concentrating the electrolysis dissolution effect on this area to achieve a metallic mirror finish. It is applied to resin stirring layers, powder equipment, and chemical industrial equipment, among others. 【Effects】 ■ Adhesion suppression ■ Improved degassing properties ■ Prevention of metal dissolution and suppression of bacterial and microbial retention ■ Light reflection, thermal radiation, degassing ■ Aesthetic appeal, high quality *For more details, please refer to the PDF document or feel free to contact us.

• Wafer processing/polishing equipment

This document is a table comparing electrolytic composite polishing materials. It introduces items such as A5052, TP340 (Ti2 type), and HASTELLOY (C-22) one by one. Electrolytic composite polishing can achieve a smooth surface at the nano level, resulting in an ultra-precise mirror finish. Diagrams are also included. Please take a look. [Contents] ■A5052 ■TP340 (Ti2 type) ■HASTELLOY (C-22) ■SUS304 *For more details, please refer to the PDF document or feel free to contact us.

• Other abrasives

Electrolytic polishing is a method of polishing the surface of products (such as metals like stainless steel) by dissolving it electrochemically in an electrolyte solution (primarily acidic solution). It simultaneously smooths out small irregularities of about 0.01 to 0.1 μm and removes relatively larger irregularities of several micrometers, resulting in a glossy finish. It can be consistently implemented alongside buff polishing, and on-site construction is possible within the country. Additionally, our company will be exhibiting at "SEMICON JAPAN 2024" held at Tokyo Big Sight. We sincerely look forward to your visit. 【Features (especially for stainless steel)】 ■ Improved cleanability ■ Difficulty of fine powder adhesion ■ Strong rust prevention effect ■ Removal of the altered layer from processing *For more details, please refer to the PDF document or feel free to contact us.

• Wafer processing/polishing equipment

This document is a list of available surface treatments. It introduces buff polishing, electro-polishing, electro-composite polishing, and passivation treatment for materials such as austenitic and ferritic stainless steels, as well as iron and light metals. There are size restrictions for items handled in the laboratory. Additionally, there are currently some items that we do not support, but please feel free to consult with us. 【Items Listed】 ■ Stainless Steel ■ Iron and Steel ■ Nickel-based Alloys ■ Nickel-Iron Alloys ■ Light Metals ■ Other Pure Metals *For more details, please refer to the PDF document or feel free to contact us.

• Other surface treatment equipment

This document presents the characteristics of the thermal desorption of titanium with surface treatment. Using pure Ti of two types as materials, we introduce various items such as surface roughness and oxide layer thickness based on different surface treatments, as well as the relative ratio of H2 release amounts. You can also view photos of untreated and electropolished samples. We encourage you to read it. 【Items Included】 ■ Surface Treatment ■ Surface Roughness - Laser Ra (μm) measurement length 282.348 (μm) - Laser Ra relative ratio - AFM Ra (nm) measurement length 10 (μm) *For more details, please refer to the PDF document or feel free to contact us.

• Wafer processing/polishing equipment

Sanwa Sangyo Co., Ltd. conducts polishing work and precision cleaning in metal surface treatment, as well as outfitting work for railway vehicles. Since 2017, we have strengthened our production system in response to the increasing demand for electrolytic polishing for semiconductor manufacturing equipment. We have extensive experience in polishing semiconductor-related components and can provide a consistent process up to passivation. Please feel free to contact us when needed. 【Business Activities】 ■ Buff Polishing ■ Electrolytic Polishing ■ Electrolytic Composite Polishing ■ Passivation Treatment ■ Pickling *For more details, please refer to the PDF document or feel free to contact us.

• Wafer processing/polishing equipment

"Buff polishing" is one of the physical polishing methods that has been used for a long time, and we carry it out using cloth or paper polishing materials. Buff polishing has a wide range of applications and requires speedy and high-level techniques. Our company responds to various demands with the skills and expertise accumulated over many years by our skilled technicians. Additionally, we perform mirror polishing of complex shapes, HL processing, and removal of surface defects (such as scratches, rust, burrs, and pits). 【Features】 ■ Improvement of glossiness ■ Improvement of smoothness ■ Removal of weld beads ■ Removal of scratches and pits ■ Removal of contaminants ■ Removal of burrs *For more details, please refer to the PDF document or feel free to contact us.

• Other abrasives

"Electrolytic Composite Polishing" is a nano-order polishing method that combines the electrolytic dissolution of metals (such as stainless steel, aluminum, and titanium) with mechanical abrasion using polishing materials. Liquid polishing abrasives are supplied from a pump to a rotating tool, applied to the workpiece while being energized during the process. This method accommodates not only flat plates but also products with three-dimensional shapes. The polished surfaces of products treated with electrolytic composite polishing (especially stainless steel products) achieve an ultra-precise mirror finish, enhancing their aesthetic appeal. Furthermore, our company has developed a surface treatment technology called "SUSECP" to further improve the corrosion resistance of electrolytic composite polishing, achieving a surface roughness of Ra=2.7nm with enhanced corrosion resistance. 【Features】 ■ Complex shape processing ■ Ultra mirror finish ■ High uniformity ■ High corrosion resistance ■ High vacuum compatibility *For more details, please refer to the PDF document or feel free to contact us.

• Wafer processing/polishing equipment

Sanwa Sangyo Co., Ltd.'s "Electropolishing" is a method of polishing the surface of products (such as stainless steel) by electrochemically dissolving it in an electrolyte solution (primarily acidic solution). It simultaneously smooths out tiny irregularities of about 0.01 to 0.1 micrometers and removes relatively larger irregularities of several micrometers, resulting in a glossy finish. Thanks to our unique technology and years of experience and achievements, we provide high-quality electropolishing services for both large and small items. 【Features】 ○ Improved cleanability ○ Difficulty in adhesion of fine powders ○ Strong rust prevention effect ○ Enhanced chemical resistance ○ No processing alteration layer For more details, please contact us or download the catalog.

• Hand polishing and filing