Nihon Ruspert Co. Ltd. will be exhibiting Lafre, an innovative rustproof technology that combines three types of metals (zinc, aluminium and tin) at the optimum rate and achieves extremely thin film and superior anti-corrosion performance.
The company says it is only 5 microns by twice coating and twice baking, but the anti-corrosion performance is outstanding. Lafre can pass the salt spray test for 2,000 hours and the combined cycle corrosion test for 200 cycles. It allows bolts and nuts to fit smoothly without over-tapping, and a low baking temperature protects the products from metallographic changes. Energy consumption is reduced by low temperature processing, and pickling and electrolytic processes are not necessary, so Lafre is free from hydrogen embrittlement, Nion says. Lafre doesn't contain the six hazardous substances such as lead, cadmium or mercury of RoHs directive.
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