SURFACE TREATMENT METHOD FOR IRON-CAST PRODUCT AND IRON-CAST PRODUCT
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United States of America Patent
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Aug 27, 2015
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Feb 25, 2015
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Feb 26, 2014
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Abstract
A surface treatment method for an iron-cast product, which enables to give an anti-corrosion property to an iron-cast product and to produce a product having a rich texture by using only plant-derived materials suitable to kitchenware. A surface of the iron-cast product is applied with charcoal-containing oil, obtained by adding a plant-derived charcoal powder to vegetable oil, and heated and dried.
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