{"id":883,"date":"2024-02-08T10:48:27","date_gmt":"2024-02-08T09:48:27","guid":{"rendered":"https:\/\/www.jevan.cz\/products\/desatero-bodu-k-praskovemu-lakovani\/"},"modified":"2024-02-24T20:54:20","modified_gmt":"2024-02-24T19:54:20","slug":"ten-points-to-powder-coating","status":"publish","type":"post","link":"https:\/\/www.jevan.cz\/en\/powder-coating\/ten-points-to-powder-coating\/","title":{"rendered":"Ten points to powder coating"},"content":{"rendered":"<p>This article offers a&nbsp;brief overview of several aspects that should not be overlooked when designing and operating a&nbsp;powder coating plant.<\/p>\n<ol>\n<li>Item\n<ul>\n<li>The material must safely withstand the curing temperature (min. 160\u00baC)<\/li>\n<li>Spatially free, not connected to the ground or to materials not complying with (a)<\/li>\n<li>Dimensionally adequate &#8211; operating costs increase significantly with furnace size<\/li>\n<li>Reasonable in weight, with less heat capacity, rather thin-walled<\/li>\n<li>Form-fitting, without deep blind cavities, structurally adapted<\/li>\n<\/ul>\n<\/li>\n<li>Handling\n<ul>\n<li>Manual between processes or on a&nbsp;handling trolley, rotating devices<\/li>\n<li>Hand-held overhead conveyor and marshalling equipment, as a&nbsp;reservoir, ground special<\/li>\n<li>On conveyor with continuous or clocked feed<\/li>\n<li>Suspension method, hanger design, mechanical and chemical maintenance<\/li>\n<li>Binding, masking and blanking consumables<\/li>\n<\/ul>\n<\/li>\n<li>Preparation\n<ul>\n<li>It is based on the stresses of the environment for which it is adapted &#8211; indoor or outdoor<\/li>\n<li>Mechanical &#8211; grinding, polishing, plastering, blasting (hard, soft)<\/li>\n<li>Chemical and electrochemical, by dipping and spraying (pressure), rinsing and drying<\/li>\n<li>Drain holes from cavities, wear and contamination of blasting materials<\/li>\n<li>Ecology, liquidity &#8211; product degradability, cleaning, fumes, wash tables<\/li>\n<\/ul>\n<\/li>\n<li>Area\n<ul>\n<li>Dedicated to splashed dust, extracted for safety and hygiene reasons<\/li>\n<li>Booths are entered \/ sprayed from outside &#8211; protective equipment always<\/li>\n<li>Splashes are captured for reuse (reclaimed), structures to waste<\/li>\n<li>Dust separation from air on filter \/ dynamic separation &#8211; cyclonic<\/li>\n<li>Handling mechanisms separately inside the paint shop \/ integrated into the unit<\/li>\n<\/ul>\n<\/li>\n<li><strong>Technology<\/strong>\n<ul>\n<li>Designed to charge (electrify) powder, transport charged particles to the object<\/li>\n<li>According to charging: by friction &#8211; TRIBO system \/ high intensity field &#8211; STATIC<\/li>\n<li>By method of spraying: by human hand &#8211; manual \/ clamped in holder &#8211; automatic<\/li>\n<li>Support mechanisms: hoppers, pumps, manipulators, control cabinets<\/li>\n<\/ul>\n<\/li>\n<li>Spraying\n<ul>\n<li>Start at the most difficult to reach places of the course<\/li>\n<li>On a&nbsp;mechanised workstation, prespray first, then external ignition<\/li>\n<li>Manual cross-spraying, ringing, optimum spacing, traces<\/li>\n<li>Automatic spraying by spray wall, robot or manipulator<\/li>\n<li>Overall efficiency, adequate pressure (power), abrasiveness (Al<sub>2<\/sub>O<sub>3<\/sub>), wear<\/li>\n<\/ul>\n<\/li>\n<li><strong>Air<\/strong>\n<ul>\n<li>Adjustment to be carried out just before the application area and application technique<\/li>\n<li>Free of water (frozen), oil and mechanical impurities (oil and dust filters)<\/li>\n<li>Stabilized in an air tank of sufficient volume, suitable compressor (screw)<\/li>\n<li>Manifolds graded with skimmers, clearance, pressure drop, pressure required<\/li>\n<\/ul>\n<\/li>\n<li>Curing\n<ul>\n<li>Furnace sufficiently rated, speed of rise of hardening temperature<\/li>\n<li>Temperature fluctuations (leaks) and homogeneity of temperature field (structures, effects)<\/li>\n<li>Exposure (time) of curing is calculated only after reaching the recommended temperature (more)<\/li>\n<li>Point a) is affected by the mass of the charge, leakage from the surface (insulation), volume<\/li>\n<li>Source: electricity, gas, oil &#8211; direct and indirect heating, air circulation<\/li>\n<\/ul>\n<\/li>\n<li>Measurements\n<ul>\n<li>Coating &#8211; thickness gauges, reflective gloss gauges, comparative stencils<\/li>\n<li>Adhesion &#8211; destructive testing by grid, tape tear, impact<\/li>\n<li>Electrical strength &#8211; spark source HV<\/li>\n<li>Durability &#8211; chemical tests &#8211; salt chamber<\/li>\n<li>Powder electrification (REGTEST), leakage resistance and earthing (TESOR)<\/li>\n<\/ul>\n<\/li>\n<li>Safety\n<ul>\n<li>Reduction of explosion risk by permanent cleaning of the spraying area and surroundings<\/li>\n<li>Continuous control of grounding of goods, guns and metal within 6m of the spray<\/li>\n<li>Lighting of spray area, shoes, clothing, no gloves, static floor<\/li>\n<li>Spray blocking in case of insufficient suction, lights and sockets with cover<\/li>\n<li>Control of ignition signalling device, in operation clean, blowdown<\/li>\n<li>Check of fire extinguishing equipment, extinguishing media cartridges<\/li>\n<li>No smoking and handling of open flames, welding and cutting.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p><strong>Ing. Josef Je\u017eek<br \/>\n<\/strong><em>The text was compiled for the training organized in cooperation with \u010cVUT: 2012\/04<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This article offers a&nbsp;brief overview of several aspects that should not be overlooked when designing and operating a&nbsp;powder coating plant. Item The material must safely withstand the curing temperature (min. 160\u00baC) Spatially free, not connected to the ground or to materials not complying with (a) Dimensionally adequate &#8211; operating costs increase significantly with furnace size [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[18],"tags":[],"class_list":["post-883","post","type-post","status-publish","format-standard","hentry","category-powder-coating"],"_links":{"self":[{"href":"https:\/\/www.jevan.cz\/en\/wp-json\/wp\/v2\/posts\/883","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jevan.cz\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jevan.cz\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jevan.cz\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jevan.cz\/en\/wp-json\/wp\/v2\/comments?post=883"}],"version-history":[{"count":4,"href":"https:\/\/www.jevan.cz\/en\/wp-json\/wp\/v2\/posts\/883\/revisions"}],"predecessor-version":[{"id":1151,"href":"https:\/\/www.jevan.cz\/en\/wp-json\/wp\/v2\/posts\/883\/revisions\/1151"}],"wp:attachment":[{"href":"https:\/\/www.jevan.cz\/en\/wp-json\/wp\/v2\/media?parent=883"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jevan.cz\/en\/wp-json\/wp\/v2\/categories?post=883"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jevan.cz\/en\/wp-json\/wp\/v2\/tags?post=883"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}