{"id":6109,"date":"2020-12-21T18:01:54","date_gmt":"2020-12-21T17:01:54","guid":{"rendered":"https:\/\/www.visaf.com\/production\/finishing-and-processing\/"},"modified":"2020-12-25T14:56:44","modified_gmt":"2020-12-25T13:56:44","slug":"finishing-and-processing","status":"publish","type":"page","link":"https:\/\/www.visaf.com\/en\/production\/finishing-and-processing\/","title":{"rendered":"Finishing and Processing"},"content":{"rendered":"
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Visaf performs further processes on screws, bolts and nuts, such as heat and galvanizing treatments, based on the customer\u2019s requirements. These additional procedures give the finished product greater resistance and a different look.<\/p>\n<\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Heat treatment<\/h2>\n<\/div>
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Visaf makes use of qualified and selected suppliers to perform hardening or carbonitriding treatments with or without tempering on its products. Tempering is a metallurgic process consisting of immersing steel pieces, heated at high temperatures (ranging from 721\u00b0C to 910\u00b0C), in a liquid or gaseous mixture that can separate carbon and nitrogen (UNI 5479-70). This process is performed at a temperature of about 775\u00b0C. The metals immersed in the mixture for about 3\/4 hours generate a 0.10\/0.15 mm deep cemented layer. The thickness obtained varies from 0.05mm to 0.55mm. Carbonitriding, which is performed by using low carbon steel pieces, produces screws with resistance class up to 8.8. <\/span><\/p>\n<\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Galvanizing treatment<\/h2>\n<\/div>
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Visaf also sells unprocessed products, although most customers prefer our company to deal with galvanization. Thanks to specialized suppliers, we can ensure all the main galvanizing processes, including nickel-plating, zinc-nickel-plating, brass plating, white zinc plating, high-resistance white zinc plating, black zinc plating and silver plating. At the end of the production cycle, Visaf monitors products by means of specific quality and thickness control equipment.<\/span><\/p>\n<\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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