{"id":26829,"date":"2023-07-04T03:23:37","date_gmt":"2023-07-04T03:23:37","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=26829"},"modified":"2023-07-04T03:23:37","modified_gmt":"2023-07-04T03:23:37","slug":"ceramic-foam-filter-sprayed-dead-hole","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/ceramic-foam-filter-sprayed-dead-hole\/","title":{"rendered":"Rapport d'enqu\u00eate et d'analyse sur les causes de la formation de zones non impr\u00e9gn\u00e9es, des irr\u00e9gularit\u00e9s et de la formation de scories dans les filtres en mousse c\u00e9ramique"},"content":{"rendered":"<p>Ces derniers temps, le service de contr\u00f4le qualit\u00e9 et le d\u00e9partement qualit\u00e9 ont souvent d\u00fb r\u00e9pondre aux <a href=\"http:\/\/www.adtechamm.com\/portfolio_page\/ceramic-foam-filter\/\">filtre en mousse c\u00e9ramique<\/a> d\u00e9faut de pulv\u00e9risation. Le service qualit\u00e9 a d\u00e9fini plusieurs crit\u00e8res d'\u00e9valuation pour l'atelier, et l'\u00e9quipe de production identifie en interne la cause et analyse l'origine du probl\u00e8me.<\/p>\n<figure id=\"attachment_26830\" aria-describedby=\"caption-attachment-26830\" style=\"width: 513px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-26830\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2023\/07\/IMG_20230510_095244-scaled.jpg\" alt=\"filtre en mousse c\u00e9ramique\" width=\"513\" height=\"385\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2023\/07\/IMG_20230510_095244-scaled.jpg 2560w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2023\/07\/IMG_20230510_095244-300x225.jpg 300w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2023\/07\/IMG_20230510_095244-1365x1024.jpg 1365w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2023\/07\/IMG_20230510_095244-768x576.jpg 768w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2023\/07\/IMG_20230510_095244-1536x1152.jpg 1536w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2023\/07\/IMG_20230510_095244-2048x1536.jpg 2048w\" sizes=\"auto, (max-width: 513px) 100vw, 513px\" \/><figcaption id=\"caption-attachment-26830\" class=\"wp-caption-text\">filtre en mousse c\u00e9ramique<\/figcaption><\/figure>\n<p>Filtre en mousse c\u00e9ramique \u2013 \u00ab trou mort \u00bb lors de la projection \u2013 Probl\u00e8mes li\u00e9s au processus de projection :<\/p>\n<ol>\n<li>Vaporisez le produit A sur la grande surface du <a href=\"https:\/\/www.alalloycasting.com\/fr\/porous-ceramic-filter-product\/\">filtre en c\u00e9ramique poreuse<\/a>Le produit A a toujours \u00e9t\u00e9 pulv\u00e9ris\u00e9 et atomis\u00e9, mais l'effet d'atomisation du produit B pulv\u00e9ris\u00e9 n'est pas satisfaisant. La plaque filtrante permet de contr\u00f4ler la quantit\u00e9 de scories, la taille des pores et l\u2019aspect de la surface de la plaque afin de v\u00e9rifier la qualit\u00e9 de la grande surface ; par cons\u00e9quent, la pulv\u00e9risation A ne doit pr\u00e9senter aucun probl\u00e8me. Or, \u00e0 ce stade, la pulv\u00e9risation A est in\u00e9gale : tant\u00f4t bonne, tant\u00f4t mauvaise, tant\u00f4t abondante, tant\u00f4t clairsem\u00e9e, et la fr\u00e9quence des points de chute est \u00e9lev\u00e9e. Il y a chaque jour des produits mis au rebut, et le taux de r\u00e9ussite des contr\u00f4les al\u00e9atoires de la qualit\u00e9 de la pulv\u00e9risation est faible.<\/li>\n<\/ol>\n<p>Analyse des causes : 1) La conception interne du coulis projet\u00e9 A diff\u00e8re de celle du coulis projet\u00e9 B. Le r\u00e9servoir d\u2019alimentation du coulis projet\u00e9 A a \u00e9t\u00e9 endommag\u00e9 et pr\u00e9sente de nombreuses fissures dues \u00e0 la corrosion, ce qui est la cause directe du point de fuite ; 2) La projection A a toujours \u00e9t\u00e9 moins efficace que la projection B. La raison possible est que la position et la structure de la t\u00eate de projection A diff\u00e8rent de celles de la projection B ; 3) Le remplacement de l\u2019ancien moteur de la projection A n\u2019a pas donn\u00e9 de bons r\u00e9sultats. Le tuyau d\u2019\u00e9coulement du b\u00e9ton projet\u00e9 comporte trop d\u2019ouvertures, est trop long et les ouvertures sont trop grandes. Ce tuyau de fabrication artisanale n\u2019est pas conforme aux normes et n\u2019est pas adapt\u00e9 \u00e0 la roue de projection. La position globale de la roue de projection ne correspond pas \u00e0 la conception d\u2019origine. La cause directe est une projection irr\u00e9guli\u00e8re, avec des zones plus ou moins denses, des points de chute et des irr\u00e9gularit\u00e9s ; 4) La roue de projection est ancienne et us\u00e9e. Apr\u00e8s nettoyage, chaque roue ne peut pas \u00eatre r\u00e9install\u00e9e dans sa position d\u2019origine, et l\u2019espacement entre les roues est diff\u00e9rent, ce qui r\u00e9duit consid\u00e9rablement l\u2019efficacit\u00e9 de la projection ;<\/p>\n<p>Mesures correctives sugg\u00e9r\u00e9es : 1) La solution la plus rapide \u00e0 ce stade consiste \u00e0 inverser les positions des buses A et B, en faisant en sorte que la buse B pulv\u00e9rise la grande surface et que la buse A pulv\u00e9rise la petite surface ; 2) Remplacer les tuyaux d'\u00e9coulement de la buse A par des neufs conformes \u00e0 la norme ; 3) Souder le r\u00e9servoir de r\u00e9ception du produit du pulv\u00e9risateur A pour colmater la fuite, puis comparer les dimensions et l'angle de ce r\u00e9servoir avec ceux du pulv\u00e9risateur B apr\u00e8s r\u00e9paration ;<\/p>\n<ol start=\"2\">\n<li>La transmission infrarouge s'interrompt souvent brusquement. Pour la r\u00e9tablir, il faut couper l'alimentation \u00e9lectrique de l'ensemble de la ligne de pulv\u00e9risation, puis red\u00e9marrer le syst\u00e8me afin que la transmission puisse reprendre. Dans ce cas, les op\u00e9rateurs doivent r\u00e9ajuster le volume de pulv\u00e9risation \u00e0 chaque fois. On observe entre 2 et 4 zones pr\u00e9sentant une pulv\u00e9risation in\u00e9gale ou insuffisante, ce qui a un impact consid\u00e9rable sur la stabilit\u00e9 de la qualit\u00e9 du produit et la continuit\u00e9 de la production.<\/li>\n<\/ol>\n<p>Analyse de la cause : les \u00e9l\u00e9ments de commande affich\u00e9s sur l'\u00e9cran de contr\u00f4le de la ligne de pulv\u00e9risation ne correspondent pas \u00e0 la r\u00e9alit\u00e9. Lorsque l'op\u00e9rateur lance la pulv\u00e9risation A, l'action affich\u00e9e \u00e0 l'\u00e9cran peut d\u00e9clencher la pulv\u00e9risation B ou la mise en marche de la machine de tournage. Ce type de dysfonctionnement au niveau du c\u00e2blage du syst\u00e8me d'exploitation peut provoquer des interf\u00e9rences au sein du syst\u00e8me, entra\u00eenant un mauvais fonctionnement du PRC et des plantages du logiciel syst\u00e8me.<\/p>\n<p>Mesures correctives sugg\u00e9r\u00e9es : 1) R\u00e9tablir le syst\u00e8me de contr\u00f4le op\u00e9rationnel que le fabricant de l'\u00e9quipement vient de commencer \u00e0 d\u00e9boguer et \u00e0 mettre en service, et le synchroniser avec le panneau de commande afin d'\u00e9viter toute erreur humaine ; 2) Si le probl\u00e8me persiste apr\u00e8s le r\u00e9tablissement, v\u00e9rifier s'il existe un dysfonctionnement dans le fonctionnement du syst\u00e8me.<\/p>","protected":false},"excerpt":{"rendered":"<p>Recently, the quality inspection and the quality department have frequently responded to\u00a0the ceramic foam filter sprayed dead hole. The quality department has several assessment items&hellip;<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233,20,138],"tags":[21],"class_list":["post-26829","post","type-post","status-publish","format-standard","hentry","category-blog","category-ceramic-foam-filter","category-seo","tag-ceramic-foam-filter"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Investigation and Analysis Report on Causes of ceramic foam filter sprayed dead hole, Unevenness, and Slagging<\/title>\n<meta name=\"description\" content=\"Investigation and Analysis Report on Causes of ceramic foam filter sprayed dead hole, Unevenness, and Slagging.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link 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