{"id":8862,"date":"2021-05-22T07:04:06","date_gmt":"2021-05-22T07:04:06","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=8862"},"modified":"2021-05-22T07:04:06","modified_gmt":"2021-05-22T07:04:06","slug":"degassing-equipment-slag","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/degassing-equipment-slag\/","title":{"rendered":"\u00c9quipement de d\u00e9gazage des scories"},"content":{"rendered":"

Pourquoi l'\u00e9quipement de d\u00e9gazage semble-t-il produire des scories pendant son utilisation ? Concernant les trois cas de formation de scories survenus sur l'\u00e9quipement de d\u00e9gazage, l'\u00e9quipe technique de notre entreprise va en analyser les causes :<\/p>\n

1. On constate la pr\u00e9sence d'importants d\u00e9p\u00f4ts de scories sur le manchon de protection et au niveau de l'interface avec la tige rotative.<\/p>\n

Motif :
\nLe unit\u00e9 de d\u00e9gazage<\/a>\u00a0adopte le principe de la suspension gazeuse dans le processus de d\u00e9gazage. Les scories d\u2019alumine adsorb\u00e9es par le gaz au cours du processus de flottation exploseront et seront projet\u00e9es sur le couvercle de la cuve \u00e0 mesure que les bulles remontent \u00e0 la surface du liquide. En raison de d\u00e9fauts de qualit\u00e9 cach\u00e9s du rotor, les pales de celui-ci produiront des scories pendant leur utilisation. Si elles ne sont pas nettoy\u00e9es \u00e0 temps pendant le fonctionnement, elles provoqueront des perturbations plus ou moins importantes du niveau de liquide lors d\u2019une rotation \u00e0 grande vitesse. Au fil du temps, le niveau de liquide turbulent s\u2019oxydera au contact de l\u2019air, provoquant des projections de scories et un effet d\u2019aspiration autour du manchon de protection du rotor, ce qui entra\u00eenera le blocage du rotor et endommagera le manchon de protection.<\/p>\n

2. Le trou de gaz de couverture est obstru\u00e9, la formation de scories est importante au niveau de ce trou et la masse de scories s'\u00e9tend \u00e0 l'emplacement du trou de scories.<\/p>\n

Motif :
\nL'ajout de gaz de couverture froid dans le couvercle provoque une circulation d'air inverse \u00e0 l'int\u00e9rieur de celui-ci, alternant le froid et la chaleur ; l'aluminium vaporis\u00e9 et projet\u00e9 sera adsorb\u00e9 autour de la buse du gaz de couverture puis se diffusera, ce qui entra\u00eenera l'obstruction de la conduite de gaz de couverture et augmentera la formation de scories sur le rev\u00eatement du couvercle du bac.<\/p>\n

3. Pr\u00e9sence de scories d'aluminium \u00e0 la surface du couvercle du bo\u00eetier.<\/p>\n

Motif :
\nLe r\u00e9glage du processus de d\u00e9gazage effectu\u00e9 par l'utilisateur est inappropri\u00e9 : le d\u00e9bit est trop \u00e9lev\u00e9 et la vitesse n'est pas ajust\u00e9e \u00e0 temps, ce qui provoque l'\u00e9bullition de l'aluminium liquide jusqu'au sommet du couvercle de la cuve, entra\u00eenant ainsi la formation de d\u00e9p\u00f4ts d'aluminium et de scories.<\/p>\n

Suggestions pour r\u00e9soudre les probl\u00e8mes li\u00e9s aux scories dans les \u00e9quipements de d\u00e9gazage<\/strong><\/p>\n

1. Adapter le mode d'injection du gaz d'atmosph\u00e8re afin de r\u00e9duire la diff\u00e9rence de temp\u00e9rature \u00e0 l'int\u00e9rieur de la chambre.
\n2. Adapter le mat\u00e9riau de rev\u00eatement du couvercle du bo\u00eetier et du manchon de protection en utilisant un mat\u00e9riau en aluminium antiadh\u00e9sif, hautement r\u00e9sistant \u00e0 l'usure et aux temp\u00e9ratures \u00e9lev\u00e9es.
\n3. Am\u00e9liorer l'\u00e9tanch\u00e9it\u00e9 entre le couvercle et le corps de la bo\u00eete.
\n4. Il est recommand\u00e9 \u00e0 l'utilisateur de contr\u00f4ler le processus, de r\u00e9gler le d\u00e9bit de gaz et la vitesse, et de r\u00e9duire la hauteur d'\u00e9bullition du gaz de traitement dans l'aluminium en fusion.<\/p>","protected":false},"excerpt":{"rendered":"

Why does the degassing equipment appear slagging during use? For the three Degassing Equipment Slag situations that occurred, our company\u2019s technical staff will analyze the…<\/p>","protected":false},"author":1,"featured_media":8863,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-8862","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nDegassing Equipment Slag,How to Used Degassing Unit<\/title>\n<meta name=\"description\" content=\"Suggestions for Solving Degassing Equipment Slag: Adjust the way of adding the covering gas to reduce the temperature difference.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.alalloycasting.com\/fr\/degassing-equipment-slag\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta 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