中国電化工業 List of Products and Services

China Electric Chemical Industry has dedicated production equipment for parts used in semiconductor manufacturing equipment. This allows for the avoidance of issues such as metal contamination. One of our strengths is the ability to handle large sizes suitable for anodizing treatment. The anodizing treatment can accommodate sizes up to 500mm × 1700mm × 1000mm. We have two types of sealing treatment equipment: boiling water sealing equipment and steam sealing equipment, allowing for processing tailored to the required film performance. Boiling water sealing can handle sizes up to 500mm × 1700mm × 1000mm, while steam sealing treatment operates at 100 to 150°C, also accommodating sizes up to 500mm × 1700mm × 1000mm. Our anodized coatings include three types of treatment solutions: hard anodizing, sulfuric anodizing, and chromic anodizing. By uniquely innovating the chromic anodizing coating, we have equipment capable of processing special anodized coatings that excel in particle prevention, such as Yagimite coating, which is excellent in heat resistance; Kunimite coating, which excels in both heat and corrosion resistance; and Kawamite coating, which has ten times the corrosion resistance of conventional coatings, as well as other unique anodized coatings not available from other companies.

• Surface treatment contract service

Are you experiencing any troubles or concerns with your current anodized coating? - Weak against acids and alkalis... - Corroding in a plasma environment... - Need both heat resistance and corrosion resistance... - Looking for anodizing that can withstand high temperatures... Chugoku Denka Kogyo will solve your anodizing concerns with our unique technology! We offer anodizing that meets various needs with our proprietary processing technology, achieving even higher heat and corrosion resistance than standard anodizing. 【Proprietary Processing Technology】 - Kunimite Processing: Achieves heat resistance of 400°C - Yagimite Processing: Achieves approximately 5 times the corrosion resistance of conventional methods - Rolomite Processing: Balances high heat resistance and high corrosion resistance

• Surface treatment contract service

1. A dense layer of approximately 1μm is formed on the surface of the film. 2. The dense layer acts as a cover that seals the pore surfaces, protecting the film from etching gases and corrosive solutions within semiconductor manufacturing equipment. 3. It has about five times the corrosion resistance of oxalic acid anodized (our treatment). 4. Due to its excellent sealing properties, there is no mass loss even after anodizing. 5. It has over 400 times the corrosion resistance compared to oxalic acid anodized (our treatment) when immersed in hydrochloric acid. 6. It excels in plasma resistance, resulting in over 10% less etching compared to oxalic acid anodized (our treatment). 【Features】 ■ Improved durability ■ Cost reduction ■ Reduced internal corrosion ■ Reduced particle generation *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

Using Kunimite in semiconductor manufacturing equipment: 1. No cracks occur even when heated to over 350°C. 2. No particles are generated due to cracks. 3. No corrosion occurs from cracks. 4. A 50μm thick film shows excellent corrosion resistance against physical etching by plasma. 5. The gas release rate is ten times faster than that of typical anodized coatings, quickly reaching the processing vacuum environment. 【Features of Kunimite】 - Reduction of particles - Crack-free coating - Fast reach to processing vacuum levels - Shortened processing time - Long product lifespan with a 50μm thick film *For more details, please refer to the PDF document or feel free to contact us. *Currently, a patent is pending.

• Surface treatment contract service

"Hard anodizing" is a coating characterized by its hardness compared to sulfuric anodizing and oxalic anodizing. It is processed in a low-temperature electrolytic bath to produce a thick and hard coating. It is widely used in sliding parts of mechanical components. With a hardness of 400 to 450 Hv and good wear resistance, the coating thickness generation speed is 32 to 80 μm in 40 minutes, and the film thickness is 30 to 60 μm. 【Specifications (partial)】 ■ Processing Overview: Processed in a low-temperature electrolytic bath to produce a thick and hard coating. ■ Main Purpose and Characteristics: - Wear resistance, corrosion resistance, insulation - Film thickness: 30 to 60 μm - Color: Gray to brown ■ Economic Efficiency: High electricity costs, high utility costs ■ Transparency: The coating varies depending on the material but generally turns black. *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

"Oxalic anodizing" refers to a coating that is denser than sulfuric anodizing and has high corrosion resistance. It possesses properties such as rust prevention, wear resistance, and insulation, with a hardness of 300 to 350 Hv. The film thickness ranges from 5 to 40 μm. It is used in mechanical parts and semiconductor device components. 【Specifications (partial)】 ■ Treatment Overview: Can be processed at higher temperatures than sulfuric baths, with higher voltage. ■ Main Purpose and Characteristics - Rust prevention, wear resistance, insulation - Film thickness: 5 to 40 μm ■ Economic Factors: High chemical costs, high electricity costs, high wastewater treatment costs ■ Transparency: The coating is yellow. *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

"Sulfuric anodizing" refers to a coating that has a silver metallic color and features the ability to be dyed in various colors due to the pores formed on its surface. Many aluminum products, such as the exterior colors of iPhones and aluminum sashes, utilize this coating. It has economic advantages, such as low chemical costs and low wastewater treatment costs. 【Specifications (partial)】 ■ Treatment Overview: A general treatment performed in a sulfuric acid bath ■ Main Purpose and Characteristics - Corrosion resistance, decorative (coloring) - Coating thickness: 5–20μm - Color: Colorless to gray ■ Economic Efficiency: Low chemical costs, low wastewater treatment costs ■ Transparency: Transparent coating (colored depending on the alloy) *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

Our company specializes in "hard anodizing for precision equipment." Aluminum materials are lightweight and have excellent machinability, allowing for complex shapes to be processed. However, compared to iron, aluminum is softer, which raises concerns about deformation due to wear in areas like flexing parts. By utilizing the hardness of hard anodizing to improve wear resistance, the use of aluminum materials becomes feasible. 【Features】 ■ A coating characterized by hardness compared to sulfuric anodizing and oxalic anodizing ■ Processed in a low-temperature electrolytic bath to produce a thick, hard coating ■ Improved wear resistance by utilizing the hardness of hard anodizing ■ Enables the use of aluminum materials *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

Our company proposes the "Yagimite Coating," which is suitable for sterilization and disinfection measures for medical devices. By using a highly corrosion-resistant Yagimite coating, it is less likely to corrode from sterilants used in medical settings, and it can also be used with strong disinfectants, making it effective in preventing infections caused by medical devices. It is particularly recommended for the use of surgical instruments and implants. Please feel free to contact us if you have any inquiries. 【Features】 ■ Highly corrosion-resistant Yagimite coating ■ Less likely to corrode from sterilants used in medical settings ■ Can also be used with strong disinfectants ■ Effective in preventing infections caused by medical devices *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

Our company conducts "semiconductor Kunimite processing." It is effective in reducing the amount of particles generated within semiconductor manufacturing equipment that uses corrosive gases. One of the causes of particle generation is known to be the occurrence of cracks due to thermal effects from plasma, which leads to corrosion and subsequently particle generation. "Kunimite" does not generate cracks due to heat, so particles do not occur even after long-term use in plasma etching equipment. 【Features】 ■ Effective in reducing the amount of particles ■ No occurrence of cracks due to heat ■ No particles generated even after long-term use in plasma etching equipment *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

Our company is engaged in "semiconductor Yagimite processing." "Yagimite" is used in the chambers of etching equipment that utilize chlorine-based gases, leading to cost reductions through improved durability and decreased internal corrosion, while also minimizing the generation of particles. Please feel free to contact us when you need our services. 【Features】 ■ Improved durability ■ Cost reduction ■ Reduced internal corrosion ■ Minimized particle generation *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

"Thermalite processing" is a technology that forms a highly corrosion-resistant coating on aluminum alloys through a special treatment, even on the inner surfaces of curved pipes and difficult-to-treat small parts. It has excellent alkali resistance and no mass loss. Please feel free to contact us when you need our services. 【Features】 ■ Technology that forms a highly corrosion-resistant coating on aluminum alloys through a special treatment ■ Excellent alkali resistance ■ No mass loss *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

"Yagimaito processing" is our patented technology that ensures ultra-corrosion resistance by forming a new layer approximately 1μm thick on the surface of the anodized coating. It exhibits excellent alkali resistance, with corrosion resistance about five times greater than conventional products. Additionally, the etching depth has decreased by 10.6% at an acceleration voltage of 1.5KV, 12.0% at 2.0KV, and 21.2% at 2.5KV compared to conventional products. This indicates that Yagimaito has superior plasma resistance compared to traditional products. Furthermore, in anodizing processes for semiconductor manufacturing equipment, Yagimaito is used in chambers of etching devices that utilize chlorine-based gases. Yagimaito enhances durability, leading to cost reductions, reduced internal corrosion, and effective suppression of particle generation.

• Surface treatment contract service

China Electric Chemical Industry Co., Ltd. conducts metal surface treatment, including anodizing. The anodizing process known as "Kunimite processing" features a coating that is resistant to high temperatures, with a thickness of 50μm that does not develop cracks even after being heated at 500°C for 3 hours. Additionally, since the coating does not develop cracks even when heated above 500°C, it can be used for components that experience high temperatures. This processing is recommended for important parts of semiconductor manufacturing equipment and electronic components. Furthermore, in the Kunimite processing for semiconductor manufacturing equipment, Kunimite is effective in reducing the amount of particles. Since semiconductor manufacturing equipment typically uses corrosive gases, cracks can occur due to thermal effects from plasma, leading to corrosion and the generation of particles. Because Kunimite does not develop cracks due to heat, particles do not form even after prolonged use in plasma etching equipment.

• Processing Contract

We would like to introduce the "Kawamite processing" that we conduct. The characteristics of Kawamite include a dense layer on the surface of the coating that is 1 to 10 μm thick, providing excellent alkali corrosion resistance. It has excellent sealing properties, and in the phosphoric acid-chromic acid solution immersion test, there was no mass loss. 【Features】 ■ Excellent alkali resistance ■ Superior sealing properties with no mass loss ■ Excellent breakdown voltage ■ Dense layer on the surface of the coating is 1 to 10 μm ■ A hydrated oxide layer is formed within the fine pores and in the upper layer, which is 5 μm thick *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

China Electric Chemical Industry Co., Ltd. has developed a sealing treatment layer (Yagimite) with high hardness and remarkable corrosion resistance, applied on anodized coatings used in semiconductor manufacturing equipment's vacuum components. The formation of this sealing treatment layer has dramatically improved the performance of the anodized coating. Yagimite, which excels in alkali resistance, has about five times the corrosion resistance of conventional materials and also shows a 1.3 times improvement in plasma resistance compared to traditional anodized coatings. Additionally, due to its excellent sealing properties, there is no mass reduction. 【Features】 ○ Sealing treatment layer (Yagimite) ○ Dramatic improvement in anodized coating performance ○ Excellent alkali resistance with about five times the corrosion resistance of conventional materials ○ 1.3 times improvement in plasma resistance ○ No mass reduction due to excellent sealing properties For more details, please contact us or download the catalog.

• Processing Contract

China Electric Chemical Industry Co., Ltd. is a company located in Hofu City, Yamaguchi Prefecture, engaged in metal surface treatment businesses including plating and anodizing. Thermite processing creates a highly corrosion-resistant film on aluminum alloys through special treatment, even on the inner surfaces of curved pipes and difficult-to-treat small items. Additionally, Yagimite processing forms a new layer approximately 1μm thick on the surface of the anodized film under special electrolytic conditions, ensuring ultra-corrosion resistance. 【Our Unique Processing Technologies】 ○ Thermite Processing ○ Yagimite Processing ○ Kunimite Processing ○ Precious Metal Plating (Re-plating) ○ Granular Plating For more details, please contact us or download the catalog.

• Processing Contract

The "replating process for the gold-plated pattern parts of contact substrates for electronic component testers" conducted by China Electric Chemical Industry Co., Ltd. (CDK) allows for the repair of fine details without being affected by shape, and it can be done reliably and at a low cost compared to traditional metallurgical repairs. By selecting the plating film, it is possible to achieve higher hardness characteristics. The "cleaning and replating process for pogo pins used in testers at IC and LSI production factories" can remove dirt more smoothly and uniformly compared to mechanical polishing alone. Due to a special chemical treatment, it hardly affects the underlying metal or guide pins. 【Processing Technology】 ○ Gold plating pattern replating technology for contact substrates for electronic component testers ○ Cleaning and replating process for pogo pins used in testers at IC and LSI production factories For more details, please contact us or download the catalog.

• Processing Contract