{"id":1575,"date":"2024-09-23T14:35:52","date_gmt":"2024-09-23T13:35:52","guid":{"rendered":"https:\/\/www.belzona.nl\/be-fr\/?post_type=toepassingen&#038;p=1575"},"modified":"2025-12-02T15:56:20","modified_gmt":"2025-12-02T14:56:20","slug":"reparation-de-corrosion-par-piqures","status":"publish","type":"applications","link":"https:\/\/www.belzona.be\/fr\/applications\/reparation-de-corrosion-par-piqures\/","title":{"rendered":"R\u00e9paration de corrosion par piq\u00fbres"},"content":{"rendered":"\n<p>La corrosion d\u00e9signe la d\u00e9t\u00e9rioration progressive de mat\u00e9riaux due \u00e0 des r\u00e9actions chimiques ou \u00e9lectrochimiques avec leur environnement. Il existe plusieurs types de corrosion. Le pr\u00e9sent article aborde un type sp\u00e9cifique\u00a0: <strong>la corrosion par piq\u00fbres<\/strong>. La corrosion est un probl\u00e8me dangereux et co\u00fbteux dans de nombreux secteurs. Elle peut, dans les cas les plus graves, entra\u00eener l&rsquo;effondrement de b\u00e2timents et de ponts, la rupture d&rsquo;ol\u00e9oducs et l&rsquo;apparition de fuites dans des usines chimiques. Comment effectuer une r\u00e9paration de corrosion par piq\u00fbre ?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Tout d&rsquo;abord, qu&rsquo;est-ce que la corrosion par piq\u00fbres&nbsp;?<\/strong><\/h2>\n\n\n\n<p>La corrosion par piq\u00fbres, aussi appel\u00e9e corrosion ponctuelle, est une forme de corrosion localis\u00e9e qui provoque la formation de petites cavit\u00e9s localis\u00e9es (piq\u00fbres) p\u00e9n\u00e9trant en profondeur. Ce type de corrosion est particuli\u00e8rement insidieux, car souvent difficile \u00e0 rep\u00e9rer. Malgr\u00e9 la petite surface apparemment touch\u00e9e, le ph\u00e9nom\u00e8ne peut causer des d\u00e9g\u00e2ts consid\u00e9rables.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" width=\"1024\" height=\"771\" data-src=\"https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/Reparation-de-corrosion.webp\" alt=\"\" class=\"wp-image-1577 lazyload\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/771;width:483px;height:auto\" data-srcset=\"https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/Reparation-de-corrosion.webp 1024w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/Reparation-de-corrosion-300x226.webp 300w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/Reparation-de-corrosion-768x578.webp 768w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/Reparation-de-corrosion-416x313.webp 416w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>Caract\u00e9ristiques de la corrosion par piq\u00fbres<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>La corrosion par piq\u00fbre provoque des dommages localis\u00e9s, contrairement \u00e0 la corrosion uniforme, qui se r\u00e9pand de mani\u00e8re homog\u00e8ne sur toute la surface.<\/li>\n\n\n\n<li>La corrosion par piq\u00fbres se traduit par des cavit\u00e9s profondes et \u00e9troites qui p\u00e9n\u00e8trent la surface du m\u00e9tal. Ces cavit\u00e9s affaiblissent consid\u00e9rablement la structure m\u00e9tallique.<\/li>\n\n\n\n<li>Les piq\u00fbres sont g\u00e9n\u00e9ralement de petite taille, et donc difficiles \u00e0 rep\u00e9rer. En outre, elles se cachent souvent sous des contaminants recouvrant la surface. Ainsi, la corrosion par piq\u00fbres est difficile \u00e0 d\u00e9tecter visuellement sans une inspection minutieuse.<\/li>\n\n\n\n<li>Une fois le ph\u00e9nom\u00e8ne amorc\u00e9, la corrosion par piq\u00fbres \u00e9volue rapidement et peut s&rsquo;aggraver en peu de temps, notamment en pr\u00e9sence d&rsquo;ions sp\u00e9cifiques tels que les chlorures.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Causes de la corrosion par piq\u00fbres<\/strong><\/h2>\n\n\n\n<p>La corrosion par piq\u00fbres est fr\u00e9quemment d\u00e9clench\u00e9e par des ions corrosifs, tels que les chlorures, qui peuvent p\u00e9n\u00e9trer la couche d&rsquo;oxyde protectrice des m\u00e9taux, comme l&rsquo;acier inoxydable.<\/p>\n\n\n\n<p>Un dommage m\u00e9canique peut alt\u00e9rer la couche passive ou le rev\u00eatement protecteur<\/p>\n\n\n\n<p>Le contact entre deux m\u00e9taux diff\u00e9rents dans un environnement \u00e9lectrolytique peut \u00e9galement entra\u00eener une corrosion galvanique, acc\u00e9l\u00e9rant la corrosion par piq\u00fbres.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Cons\u00e9quences de la corrosion par piq\u00fbres<\/strong><\/h2>\n\n\n\n<p>La corrosion par piq\u00fbre peut compromettre gravement la r\u00e9sistance structurelle du mat\u00e9riau. Celui-ci s&rsquo;affaiblit en cons\u00e9quence. Des fuites, voire m\u00eame une d\u00e9faillance critique, peuvent survenir dans des tuyaux, r\u00e9servoirs et autres r\u00e9cipients sous pression sous l&rsquo;effet de la corrosion par piq\u00fbres. La d\u00e9tection et la r\u00e9paration de la corrosion par piq\u00fbres peuvent s&rsquo;av\u00e9rer co\u00fbteuses et n\u00e9cessiter beaucoup de temps. Il est donc important de veiller \u00e0 une <a href=\"https:\/\/www.belzona.nl\/toepassingen\/corrosie-bescherming\/\">protection anti-corrosion<\/a> pr\u00e9ventive.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Mat\u00e9riel n\u00e9cessaire pour traiter la corrosion par piq\u00fbres&nbsp;:<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Spatule Belzona<\/li>\n\n\n\n<li>Applicateur Belzona<\/li>\n\n\n\n<li>Belzona Surface<\/li>\n\n\n\n<li>Bol de m\u00e9lange Belzona<\/li>\n\n\n\n<li><a href=\"https:\/\/www.belzona.nl\/product\/vloeibaar-en-kneedbaar-metaal\/belzona-1111-vloeibaar-metaal\/\">Belzona 1111<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.belzona.nl\/product\/coatings\/belzona-1321-ceramic-s-metal\/\">Belzona 1321<\/a><\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" width=\"1024\" height=\"768\" data-src=\"https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-4.png\" alt=\"\" class=\"wp-image-1579 lazyload\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/768;width:440px;height:auto\" data-srcset=\"https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-4.png 1024w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-4-300x225.png 300w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-4-768x576.png 768w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-4-416x312.png 416w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>R\u00e9paration de corrosion par piq\u00fbres&nbsp;: les diff\u00e9rentes \u00e9tapes<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img decoding=\"async\" width=\"1024\" height=\"576\" data-src=\"https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-5.png\" alt=\"\" class=\"wp-image-1580 size-full lazyload\" data-srcset=\"https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-5.png 1024w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-5-300x169.png 300w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-5-768x432.png 768w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-5-416x234.png 416w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/576;\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p>Brossez toutes les contaminations non adh\u00e9rentes et nettoyez la zone avec Belzona 9111. Aucun r\u00e9sidu ne doit encore \u00eatre pr\u00e9sent. Rugosifiez la surface par grenaillage (Pinovo), rainurage ou meulage (Allmet Safety Tools), puis nettoyez \u00e0 nouveau avec 9111.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text has-media-on-the-right is-stacked-on-mobile\"><div class=\"wp-block-media-text__content\">\n<p>Utilisez une de nos <a href=\"https:\/\/www.belzona.nl\/product-category\/vloeibaar-en-kneedbaar-metaal\/\">p\u00e2tes m\u00e9talliques<\/a>. Par exemple Belzona 1111. Appliquez la totalit\u00e9 du contenu des modules de base et de durcissement sur la surface de travail Belzona (plaque orange). M\u00e9langez soigneusement pour obtenir une mati\u00e8re lisse sans stries.<\/p>\n<\/div><figure class=\"wp-block-media-text__media\"><img decoding=\"async\" width=\"1024\" height=\"576\" data-src=\"https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-6.png\" alt=\"\" class=\"wp-image-1581 size-full lazyload\" data-srcset=\"https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-6.png 1024w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-6-300x169.png 300w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-6-768x432.png 768w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-6-416x234.png 416w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/576;\" \/><\/figure><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img decoding=\"async\" width=\"1024\" height=\"576\" data-src=\"https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-7.png\" alt=\"\" class=\"wp-image-1582 size-full lazyload\" data-srcset=\"https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-7.png 1024w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-7-300x169.png 300w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-7-768x432.png 768w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-7-416x234.png 416w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/576;\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p>Appliquez Belzona 1111 directement sur la surface pr\u00e9par\u00e9e \u00e0 l&rsquo;aide de l&rsquo;applicateur en plastique accompagnant le produit. Appuyez fermement pour combler toutes les fissures, \u00e9vacuer l&rsquo;air emprisonn\u00e9 et garantir un contact optimal avec la surface. Ensuite, reprofilez la zone r\u00e9par\u00e9e au Belzona 1111 selon le profil d\u2019origine ou laissez-le durcir avant de l&rsquo;usiner (consultez les instructions d&#8217;emploi pour les temps de durcissement).<\/p>\n<\/div><\/div>\n\n\n\n<p>Laissez la p\u00e2te Belzona 1111 atteindre son degr\u00e9 de polym\u00e9risation. Pass\u00e9 ce d\u00e9lai, la surface doit \u00eatre rendue rugueuse par pon\u00e7age ou grenaillage pour obtenir un profil de surface de 40 \u00b5m avant d&rsquo;\u00eatre recouverte de Belzona 1321.<\/p>\n\n\n\n<div class=\"wp-block-media-text has-media-on-the-right is-stacked-on-mobile\"><div class=\"wp-block-media-text__content\">\n<p>M\u00e9langez le <a href=\"https:\/\/www.belzona.nl\/product-category\/coatings\/\">rev\u00eatement<\/a> anti-corrosion (Belzona 1321). Commencez par ajouter le contenu entier du durcisseur au module de base. M\u00e9langez soigneusement pour obtenir une mati\u00e8re lisse et \u00e9gale.<\/p>\n<\/div><figure class=\"wp-block-media-text__media\"><img decoding=\"async\" width=\"1024\" height=\"576\" data-src=\"https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-8.png\" alt=\"\" class=\"wp-image-1583 size-full lazyload\" data-srcset=\"https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-8.png 1024w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-8-300x169.png 300w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-8-768x432.png 768w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-8-416x234.png 416w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/576;\" \/><\/figure><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img decoding=\"async\" width=\"1024\" height=\"576\" data-src=\"https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-9.png\" alt=\"\" class=\"wp-image-1584 size-full lazyload\" data-srcset=\"https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-9.png 1024w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-9-300x169.png 300w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-9-768x432.png 768w, https:\/\/www.belzona.be\/fr\/wp-content\/uploads\/sites\/4\/2024\/09\/image-9-416x234.png 416w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/576;\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p>Appliquez Belzona 1321 directement sur la surface pr\u00e9par\u00e9e \u00e0 l&rsquo;aide d&rsquo;une brosse dure ou de l&rsquo;applicateur en plastique accompagnant le produit. D\u00e8s que la premi\u00e8re couche est appliqu\u00e9e, appliquez une deuxi\u00e8me couche de Belzona 1321. (Consultez les instructions d&#8217;emploi de Belzona 1321 pour les pourcentages de couverture et les temps de durcissement.) V\u00e9rifiez ensuite s&rsquo;il y a des trous ou des parties manquantes et brossez imm\u00e9diatement l\u00e0 o\u00f9 vous en trouvez.<\/p>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Besoin de conseils techniques pour une r\u00e9paration corrosion ?<\/strong><\/h2>\n\n\n\n<p>Contactez un de nos conseillers. Ils sont joignables par e-mail, mais en cas d&rsquo;urgence, il est pr\u00e9f\u00e9rable de les appeler. Vous pouvez nous joindre au 00 31 078 3031920.<\/p>\n\n\n<script>\nvar gform;gform||(document.addEventListener(\"gform_main_scripts_loaded\",function(){gform.scriptsLoaded=!0}),document.addEventListener(\"gform\/theme\/scripts_loaded\",function(){gform.themeScriptsLoaded=!0}),window.addEventListener(\"DOMContentLoaded\",function(){gform.domLoaded=!0}),gform={domLoaded:!1,scriptsLoaded:!1,themeScriptsLoaded:!1,isFormEditor:()=>\"function\"==typeof InitializeEditor,callIfLoaded:function(o){return!(!gform.domLoaded||!gform.scriptsLoaded||!gform.themeScriptsLoaded&&!gform.isFormEditor()||(gform.isFormEditor()&&console.warn(\"The use of gform.initializeOnLoaded() is deprecated in the form editor context and will be removed in Gravity Forms 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d=gform.hooks[o][r];null==n&&(n=r+\"_\"+d.length),gform.hooks[o][r].push({tag:n,callable:e,priority:t=null==t?10:t})},doHook:function(r,o,e){var t;if(e=Array.prototype.slice.call(e,1),null!=gform.hooks[r][o]&&((o=gform.hooks[r][o]).sort(function(o,r){return o.priority-r.priority}),o.forEach(function(o){\"function\"!=typeof(t=o.callable)&&(t=window[t]),\"action\"==r?t.apply(null,e):e[0]=t.apply(null,e)})),\"filter\"==r)return e[0]},removeHook:function(o,r,t,n){var e;null!=gform.hooks[o][r]&&(e=(e=gform.hooks[o][r]).filter(function(o,r,e){return!!(null!=n&&n!=o.tag||null!=t&&t!=o.priority)}),gform.hooks[o][r]=e)}});\n<\/script>\n\n                <div class='gf_browser_gecko gform_wrapper gravity-theme gform-theme--no-framework' data-form-theme='gravity-theme' data-form-index='0' id='gform_wrapper_2' >\n                        <div class='gform_heading'>\n                            <h2 class=\"gform_title\">Envoyer un message<\/h2>\n                            <p 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