Ultra-thin film coating "Rafure treatment" for high-strength bolts and high-carbon steel materials.
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Ultra-thin film, high corrosion resistance - a dream hybrid collaboration! Chrome-free surface treatment - Lafre (LAFRE)
- Ultra-thin film with a thickness of 5 microns - high corrosion resistance with a durability of 2000 hours in salt spray testing! - Complies with environmental measures without the use of the six substances restricted by the RoHS Directive! - No acid pickling or electroplating processes, preventing hydrogen embrittlement! - High coating hardness that suppresses coating damage during screwing! (For details, please inquire or refer to the catalog.)
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basic information
**Features** - Contains three types of metals: zinc, tin, and aluminum, and despite having a film thickness of 5 microns, it boasts high corrosion resistance with no rust occurring even after 2000 hours in a unique salt spray test, achieving an excellent adhesive film. The coating is flat and smooth, allowing for smooth fitting of bolts, nuts, etc., and reducing damage to the coating during screwing. - Generally, during surface treatment processes such as pickling or electroplating, hydrogen is absorbed into the steel, causing hydrogen embrittlement. This treatment does not cause hydrogen embrittlement, making it suitable for high-strength bolts and high-carbon steel materials. - No harmful substances listed in the RoHS Directive, including hexavalent chromium, lead, cadmium, and mercury, are used at all, and it complies with REACH regulations, making it an environmentally friendly treatment. **Specifications** **Process**: Pre-treatment → 1st coat → Baking treatment → 2nd coat → Baking treatment **Treatment Method** - Dipping treatment *For spray treatment, the maximum processable dimension is up to 600 mm square.* (For details, please refer to the inquiry or catalog.)
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Applications/Examples of results
[Usage] High-strength bolts, hex socket bolts, etc.
Company information
Takashima Co., Ltd. celebrated its 90th anniversary in 2019. Our role has consistently been to streamline our customers' procurement processes. In response to changes in our customers' environments, we will continue to assist in enhancing corporate value by creating new value through "reducing procurement operations." We will solve our customers' "efforts and problems related to procurement operations," including centralized management of manufacturing processes, improving operational efficiency, deadline management, inventory management, and acting as an agent for overseas imports and exports.
![[Information] About the strength classification differences of hexagon socket bolts (steel/raw).](https://image.mono.ipros.com/public/product/image/2059700/IPROS8054387468743752567.jpg?w=280&h=280)
