Nihon Shinkan Co., Ltd.

Japanese

Products

Alumite

In addition to high-reliability extruded aluminum piping and machine tooled products, Nihon Shinkan offers high-quality products treated with hard alumite. There are few companies in the business that can handle everything from metal machining to surface treatment. Our total production system including drawing, machining and alumite treatment has earned us the trust of users. Besides hard alumite, we also offer regular alumite and black alumite treatment. "Ultrahard" 500 micrometer barrier coating is a result of high technology born of experience and know-how accumulated over many years in the business.

New technology: Ultrahard (200 micrometer, Hv500)

Ultrahard is an ultra-hard coating anodized by mixed organic acids having superior characteristics.

The high-quality product is abrasion resistant, can withstand high voltage, and is not subject to cracking and distortion after machine tooling.

Ultrahard is also proven to offer five time the wear resistance of SUS303.

Specimen used for wear resistance test (Ultrahard)

Ultrahard has superior hardness and voltage-resistances characteristics to alumite sulfate.

Material Treatment method Hardness Voltage resistance

(Hv) AC(KV)

JIS A5052 Ultrahard 491 2.1 - 3.3 Alumite sulfate 401 1.0 - 1.5 JIS A6063 Ultrahard 497 2.0 - 3.4 Alumite sulfate 411 1.4 - 1.7

Specimen used for wear resistance test (SUS)

Approximately five times more resistance to wear than stainless steel.

No cracking or distortion observed for thick coating of over 50 micrometer. Thicker coating of over 100 micrometer is made possible than by sulfuric acid method.
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Material                   Wear resistance (mg/ds)A5056 Ultrahard treatment  0.010
SUS303                     0.056
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Hard alumite treatment (30 - 50 micrometer)

Applications
Cylinders with fins for small compressors

Fully automatic production line realizes uniform product quality. Only titanium tools are used to improve yield. Enables high-quality production.
Partial hard alumite treatment

Applications
Shafts used for farming equipment

Special technology enables partial hard alumite treatment. Enhances partial wear resistance. Large tanks enable large-lot treatment.
Chemical polishing and black alumite treatment

Applications
Parts for radio control equipment

Chemical polishing and black alumite treatment
Alumite treatment is also available in other colors. Fast production of products with superior hardness is made possible by our powerful cooling equipment.

Special alumite coating (teflon)

Special coating
Provides coating surface with lubricity.

Offers superior initial wear resistance. Offers superior moisture resistance because it possesses superior water repellency. Offers better corrosion resistance than conventional hard alumite coating.

                                   Coefficient of   Coefficient of
                                   static friction  dynamic frictionSpecial alumite coating            0.09 - 0.10      0.11 - 0.12
Conventional hard alumite coating  0.30 - 0.38      0.46 - 0.54

Thick coating of hard alumite

Applications
Belt pulleys

Offers better wear resistance than stainless steel. Thick coating treatment made possible by fast treatment.
Specimen

Thorough quality control
A specimen can be fabricated to measure coating thickness. We are fully equipped with a Vickers hardness tester, wear resistance tester, roughness tester and other inspection equipment to provide our customers with the finest quality available.