豊田電研 List of Products and Services

We accommodate a wide range of requests from prototyping to mass production. 【Features】 ■ Improved characteristics such as corrosion resistance, wear resistance, and thermal radiation ■ High electrical insulation ■ Oxalic anodizing suppresses surface roughening compared to sulfuric anodizing, and provides high film thickness uniformity for aluminum die-cast parts with high Si content ■ Reduced reflectivity (suppresses unwanted reflections in optical devices and sensors) ■ Antibacterial properties ■ By precisely managing anodizing conditions, high uniformity is achieved in characteristics such as film thickness, coating hardness, and surface roughness ■ Widely adopted for functional parts in automobiles with abundant mass production results *Currently, we have multiple technical documents regarding our anodizing treatment available! Please check the materials from the "PDF Download" link below.

• Surface treatment contract service

Our company has a dedicated "development line" for research and development and prototyping. As past examples of research and prototyping, we have antibacterial anodizing, plating on engineering plastics, anodizing of magnesium materials, and various types of electroplating. Customers who are unsure where to request surface treatment prototyping are encouraged to utilize our development line and technical expertise. 【Permanent Processes as of April 2024】 ■ Sulfuric anodizing / Oxalic anodizing / Mixed acid anodizing ■ Low-reflective anodizing *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service
• Contract manufacturing

The jigs used for our anodizing process are manufactured at our Seki factory. We design and produce jigs that conform to the specifications of our customers' products. By accumulating experience from previous anodizing projects, we have developed specialized jigs for each product that ensure stable quality (anodizing specifications, scratch/drop prevention). In addition to mass production jigs, we also manufacture jigs for beaker sizes and small prototype tank sizes, as well as workbenches for handling jigs and carts for storing jigs, and we accept external sales as well. 【Features】 ■ Jigs used for anodizing are manufactured at our Seki factory ■ Jigs are designed and produced to meet the specifications of our customers' products ■ Achieves stable quality (anodizing specifications, scratch/drop prevention) *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing

This document introduces the anodizing treatment and special processes of Toyota Dengen Co., Ltd. As reference material, a comparison of diffuse reflectance rates is included. The anodizing plus special processes enable the reduction of reflectance rates for aluminum parts. Customers who require low reflectance for aluminum parts in optical devices and sensors, or those considering adding anti-glare properties to aluminum parts, are encouraged to consider this. [Contents] ■ Comparison of diffuse reflectance rates *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

This document introduces the anodizing technology of Toyota Denso Corporation. The jigs used for our anodizing treatment are manufactured at our Seki plant, and we design and produce jigs that meet the specifications of our customers' products. The content is explained using images and tables, making it easy to reference, so please feel free to download and take a look. 【Contents (partial)】 ■ For customers troubled by corrosion of aluminum parts ■ For customers troubled by wear of aluminum parts ■ For customers who want to improve the heat dissipation effect of aluminum heat sinks ■ For customers who require low reflectivity for aluminum parts in optical devices and sensors ■ For customers looking for black anodizing that is resistant to fading in outdoor or high-temperature environments *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

This document introduces the anodizing treatment and secondary electrolytic coloring process by Toyota Dengen Co., Ltd. As reference material, we have included a comparison of dyed products and secondary electrolytic colored products. The black anodized finish achieved through the anodizing and secondary electrolytic coloring process exhibits superior light and heat resistance compared to black dyed anodized finishes. Customers looking for black anodized finishes that are resistant to fading in outdoor or high-temperature environments are encouraged to consider this option. [Contents] ■ Comparison of dyed products and secondary electrolytic colored products *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

This document introduces the anodizing + antibacterial sealing treatment by Toyota Dengen Co., Ltd. As reference materials, we have included evaluations of antibacterial effects and test results for E. coli and Staphylococcus aureus. By applying anodizing + antibacterial sealing treatment, antibacterial properties can be imparted. Customers who wish to add antibacterial properties to existing anodized products are encouraged to consider this option. [Contents] ■ Evaluation of antibacterial effects ■ About antibacterial testing ■ Test results *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

This document introduces the anodizing treatment by Toyota Dengen Co., Ltd. As reference material, we have included the results of emissivity measurements. By applying anodizing treatment, thermal emissivity is significantly improved. Customers who wish to enhance the heat dissipation effect of aluminum heat sinks are encouraged to consider this. [Contents] ■ Emissivity Measurement Results *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

This document introduces the anodizing treatment by Toyota Dengen Co., Ltd. It includes information on the types of anodizing and the presence or absence of sealing treatment, as well as their impact on wear resistance. Anodizing treatment significantly improves wear resistance. Customers struggling with wear on aluminum parts and those considering enhancing wear resistance in the design and manufacturing of aluminum parts are encouraged to take this into consideration. 【Contents】 ■ Reference materials ■ Test results *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

This document introduces the anodizing treatment by Toyota Dengen Co., Ltd. The results of the corrosion resistance test (salt spray test) are published along with images. By applying anodizing treatment, corrosion resistance is improved. Customers who are troubled by the corrosion of aluminum parts, as well as those considering improving corrosion resistance in the design and manufacturing of aluminum parts, are encouraged to consider this. [Contents] ■ Results of the corrosion resistance test (salt spray test) *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

Here is an example of "sulfuric acid anodizing." The applications for surface treatment include improving corrosion resistance and dyeing. Compared to oxalic acid anodizing, it can achieve a thicker film (though with lower smoothness) and allows for dyeing. The color tone is dark gray, and it becomes darker as the film thickness increases. 【Example Overview】 ■ Material: ADC12 ■ Surface Treatment Applications: Improving corrosion resistance, dyeing, etc. ■ Type of Anodizing: Sulfuric acid anodizing ■ Features: Can achieve a thicker film compared to oxalic acid anodizing (with lower smoothness), allows for dyeing ■ Color Tone: Dark gray, becoming darker as the film thickness increases *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

Here is an example of "Oxalic Acid Anodizing." The applications of surface treatment include improvements in surface hardness, wear resistance, and corrosion resistance. Compared to sulfuric acid anodizing, it is characterized by a smooth film. The color tone is dark gray, and as the film thickness increases, it tends to take on a brownish hue. 【Example Overview】 ■ Material: ADC12 ■ Surface Treatment Applications: Improvements in surface hardness, wear resistance, and corrosion resistance ■ Type of Anodizing: Oxalic Acid Anodizing ■ Features: Compared to sulfuric acid anodizing, it results in a smooth film ■ Color Tone: Dark gray, tending to become brownish as the film thickness increases *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

Here is an example of "sulfuric acid hard anodizing." The surface treatment application features improved surface hardness and wear resistance, with higher hardness and the ability to create thick films compared to sulfuric anodizing. The color tone becomes darker as the film thickness increases. 【Case Overview】 ■ Material: A6061-T6 ■ Surface Treatment Application: Improved surface hardness, wear resistance, etc. ■ Type of Anodizing: Sulfuric acid hard anodizing ■ Features: Higher hardness and the ability to create thick films compared to sulfuric anodizing ■ Color Tone: Darker as the film thickness increases *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

Here is an example of "sulfuric acid anodizing." The applications for surface treatment include improving corrosion resistance and dyeing. It can be dyed by immersion in dye, and compared to oxalic acid anodizing, it features higher dyeability. The color tone becomes darker as the film thickness increases. 【Overview of the example (partial)】 ■Material: A6061-T6 ■Surface treatment applications: Improving corrosion resistance, dyeing, etc. ■Type of anodizing: Sulfuric acid anodizing ■Features - Dyeable by immersion in dye - Higher dyeability compared to oxalic acid anodizing *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

Here is an example of "Oxalic Acid Anodizing." Compared to sulfuric anodizing, it is characterized by better wear resistance (sliding properties). The applications for surface treatment include improvements in surface hardness, wear resistance, and corrosion resistance. The color tone ranges from light yellow to yellow-brown. As the film thickness increases, the color becomes darker. 【Example Overview】 ■ Material: A6061-T6 ■ Surface Treatment Applications: Improvements in surface hardness, wear resistance, and corrosion resistance ■ Type of Anodizing: Oxalic Acid Anodizing ■ Features: Better wear resistance (sliding properties) compared to sulfuric anodizing ■ Color Tone: Ranges from light yellow to yellow-brown, becoming darker as the film thickness increases *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

We would like to introduce the "Surface Treatment Related Equipment" of Toyota Dengen Co., Ltd. The surface treatment equipment includes "sulfuric acid and sulfuric acid hard anodizing lines" and "oxalic acid anodizing lines," enabling smooth production from prototyping to mass production. Additionally, we have "jigs for small products" and "jigs for medium products," allowing for the development of jigs tailored to our company, ensuring process quality. 【Available Equipment】 ■ Surface Treatment Equipment ・Sulfuric acid and sulfuric acid hard anodizing line ・Oxalic acid anodizing line ・Prototyping line ■ Tools and Jigs (in-house production) ・Jigs for small products ・Jigs for medium products *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service
• Other surface treatment equipment
• Processing Contract

At Toyota Electric Research Co., Ltd., we conduct "prototype and research development." We can assist those facing challenges with surface treatment, such as adding functionality to parts using functional thin films, extending the lifespan of parts, and increasing added value. We will ensure complete confidentiality. Additionally, when responding on the prototype line, the dimensions we can accommodate are approximately 300 mm in width, 300 mm in length, and 100 mm in depth. 【Features】 ■ Complete confidentiality measures ■ Costs for prototype and research development will be quoted on a case-by-case basis ■ When responding on the prototype line, the dimensions we can accommodate are approximately 300 mm in width, 300 mm in length, and 100 mm in depth ■ If using sulfuric anodizing or oxalic anodizing, we can also accommodate prototypes on the mass production line *For more details, please refer to the PDF document or feel free to contact us.

• Prototype Services
• Contract manufacturing
• Processing Contract

We would like to introduce the "measuring instruments" held by Toyota Dengen Co., Ltd. We have a "non-destructive film thickness gauge (anodized)" and a "metal microscope." Additionally, we also have a "microscope" and "SEM" for tissue observation and surface observation. 【Equipment held (partial list)】 ■ Non-destructive film thickness gauge (anodized) ■ Metal microscope ■ Microscope ■ SEM *For more details, please refer to the PDF document or feel free to contact us.

• Coating thickness gauge
• Other microscopes

We would like to introduce the "Quality Assurance" of Toyota Dengen Co., Ltd. In "Process Condition Management," conditions such as processing time and current value settings are automatically controlled to ensure optimal conditions for each product, providing stable quality. Additionally, we have a "Liquid Management System" that is managed daily by dedicated analysts, a "Shipping Inspection System" that corresponds to customer specifications, and a "Quality Assurance System" implemented by dedicated inspectors using measuring instruments. 【Features】 ■ Automatic control of conditions such as processing steps, processing liquid temperature, processing time, and current value settings ■ Ensures optimal conditions for each product, providing stable quality ■ Concentration analysis management of chemical solutions is conducted daily by dedicated analysts in-house ■ Evaluation of coating characteristics according to customer specifications ■ Visual inspections are conducted either as "sampling inspections" or "100% inspections" *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract
• Surface treatment contract service
• Other contract services

We would like to introduce the anodizing process of "sulfuric acid anodizing" conducted by Toyota Dengen Co., Ltd. There is a wealth of adoption results for functional parts due to precise control of coating thickness. The maximum product dimensions are 1,100×900×150mm. Additionally, the compatible aluminum materials include extruded materials, die-cast, and castings. Coating thickness and appearance quality are the main inspection items. 【Performance Evaluation Tests】 ■ Coating Thickness ■ Appearance Quality *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract
• Surface treatment contract service

We would like to introduce the anodizing process of "sulfuric acid hard anodizing" conducted by Toyota Dengen Co., Ltd. We achieve high quality that can stably and accurately produce the film thickness and film hardness required by our customers. The compatible aluminum materials include extruded materials, die-cast, and castings. The maximum product dimensions are 1,100 × 900 × 150 mm. Please feel free to consult us when placing an order. 【Performance Evaluation Tests】 ■ Film Thickness ■ Film Hardness ■ Surface Roughness ■ Dimensional Accuracy ■ Appearance Quality *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract
• Surface treatment contract service

We would like to introduce the anodizing process of "Oxalic Anodizing" conducted by Toyota Dengen Co., Ltd. A highly uniform anodic film is produced on aluminum die-cast containing a high amount of silicon and other elements. The compatible aluminum materials include extrusions, die-casts, and castings, with a maximum product size of 1,100×900×150mm. 【Performance Evaluation Tests】 ■ Film Thickness ■ Film Hardness ■ Surface Roughness ■ Dimensional Accuracy ■ Appearance Quality *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract
• Surface treatment contract service

Leveraging our years of experience in precision anodizing of automotive parts, we will respond to various needs of our customers. The functions that can be enhanced through anodizing include electrical insulation, thermal radiation, corrosion resistance, wear resistance, surface hardening, and decorative properties. Our lineup of anodizing processes includes: - Sulfuric acid anodizing (can also be black dyed) Examples of use: FCV parts, tire valves, ECU cases, robot parts, car air conditioning parts - Hard sulfuric acid anodizing Examples of use: Linear solenoid parts, tool parts - Oxalic acid anodizing (superior in wear resistance compared to sulfuric acid anodizing) Examples of use: Linear solenoid parts, fuel pump parts, SBW parts.

• Processing Contract