{"id":12386,"date":"2023-02-21T18:14:56","date_gmt":"2023-02-21T16:14:56","guid":{"rendered":"https:\/\/eurobolt.com.ua\/types-of-fastener-coating\/"},"modified":"2023-02-21T18:14:56","modified_gmt":"2023-02-21T16:14:56","slug":"types-of-fastener-coating","status":"publish","type":"page","link":"https:\/\/eurobolt.com.ua\/en\/main\/useful\/types-of-fastener-coating\/","title":{"rendered":"Types of fastener coating"},"content":{"rendered":"

[vc_row css=”.vc_custom_1658740915266{margin-top: 25px !important;}”][vc_column][vc_single_image image=”7814″ img_size=”full” alignment=”center” style=”vc_box_shadow”][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]When coating fasteners (bolts, nuts, washers, studs, screws, etc.), metal and non-metallic types of coatings are used. The latter, in turn, are divided into single-layer and multi-layer. Multilayer coatings are more popular and outperform single-layer coatings in terms of protective and decorative qualities, as the degree of protection is characterized by lower coating porosity.<\/p>\n

Methods of coating fasteners are:<\/strong><\/p>\n

    \n
  1. CHEMICAL<\/strong> – (metallic and non-metallic) – metal is immersed in a salt solution (phosphotation, chromatization, reduction,
    \nnickel plating, etc.)<\/li>\n
  2. ELECTROCHEMICAL<\/strong> – this method is characterized by immersion of fasteners in dissolved salts with an electrolyte (anode,
    \nelectrochemical galvanizing, cadmium plating). As a result, the fasteners have a coating thickness of 6 to 16 microns.
    \nOn average, the coating is 9 microns thick. Chromatization is performed to improve the appearance.<\/li>\n
  3. In electroplating<\/strong>, the product to be coated is the cathode. This method is used for nickel plating and
    \nchromatization.<\/li>\n
  4. Hot-dip galvanizing<\/strong> is performed by immersing the part in a hot zinc solution. Therefore, the thickness of the coating has
    \naverage value of 40-50 microns. The maximum thickness can reach 120 microns. By processing fasteners
    \nin a centrifuge to remove the excess zinc layer.
    \nThis method requires a preliminary special rolling (cutting) of the thread with a tolerance field different from the standard
    \n7N (for nuts) and 8G (for bolts and studs), which will help to maintain the threaded connection even after such a thick layer of zinc.
    \nHot-dip galvanizing is considered to be one of the most reliable, cost-effective and therefore widespread methods of protecting iron and steel from corrosion.<\/em><\/li>\n
  5. Thermal diffusion<\/strong> galvanizing is characterized by the exchange of the product material with the protective coating composition itself at the molecular level.<\/li>\n<\/ol>\n

    [\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

    [vc_row css=”.vc_custom_1658740915266{margin-top: 25px !important;}”][vc_column][vc_single_image image=”7814″ img_size=”full” alignment=”center” style=”vc_box_shadow”][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text]When coating fasteners (bolts, nuts, washers, studs, screws, etc.), metal and non-metallic types of coatings are used. The latter, in turn, are divided into single-layer and multi-layer. Multilayer coatings are more popular and outperform single-layer coatings in terms of protective and decorative qualities, as the degree of protection […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":12328,"menu_order":34,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ocean_front_end_style_editor":"no","ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"enable","ocean_disable_heading":"enable","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"centered-minimal","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"off","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","footnotes":""},"class_list":["post-12386","page","type-page","status-publish","hentry","entry"],"yoast_head":"\nTypes of fastener coating from \u0404\u0412\u0420\u041e\u0411\u041e\u041b\u0422 \u0423\u041a\u0420\u0410\u0407\u041d\u0410<\/title>\n<meta name=\"description\" content=\"Types of fastener coating from more information on the link to the site \u2794 \u0404\u0412\u0420\u041e\u0411\u041e\u041b\u0422 \u0423\u041a\u0420\u0410\u0407\u041d\u0410.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/eurobolt.com.ua\/en\/main\/useful\/types-of-fastener-coating\/\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" 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