agent de recouvrement<\/a>, \u00e9vitez de remuer l'aluminium fondu. On laisse ensuite reposer l'aluminium fondu pendant 5 \u00e0 10 minutes afin que les inclusions remontent \u00e0 la surface, et l'aluminium lib\u00e9r\u00e9 de l'\u00e9cume se m\u00e9lange \u00e0 l'aluminium fondu. Enfin, retirez compl\u00e8tement l'\u00e9cume.<\/p>\nLes produits de nettoyage pour fours sont g\u00e9n\u00e9ralement utilis\u00e9s \u00e0 une temp\u00e9rature suffisamment \u00e9lev\u00e9e pour acc\u00e9l\u00e9rer la r\u00e9action et ramollir les agr\u00e9gats. Appliquez le produit de nettoyage sur la paroi du four, allumez le four et fermez la porte. Au bout de 10 \u00e0 15 minutes, retirez les produits de r\u00e9action pr\u00e9sents sur la paroi du four ainsi que les d\u00e9bris \u00e0 la surface de l'aluminium fondu. Le four de maintien doit rester \u00e0 l'arr\u00eat pour permettre aux oxydes qui p\u00e9n\u00e8trent dans l'aluminium fondu de se d\u00e9poser au fond.<\/p>\n
En cas d'utilisation \u00e0 temp\u00e9rature normale, apr\u00e8s la formation de la scorie, l'agent de nettoyage du four doit \u00eatre ajout\u00e9 \u00e0 la surface de l'aluminium fondu, \u00e0 proximit\u00e9 de la paroi du four. Au cours de la coul\u00e9e de l'aluminium fondu, \u00e0 mesure que le niveau de la surface de l'aluminium fondu baisse, l'agent de nettoyage se d\u00e9pose en continu sur la paroi du four. De cette mani\u00e8re, lors de la fusion suivante, les agr\u00e9gats pr\u00e9sents sur la paroi du four peuvent r\u00e9agir avec le fondant et \u00eatre facilement \u00e9limin\u00e9s pendant le processus de scellement.<\/p>\n
Ces derni\u00e8res ann\u00e9es, de nouveaux dispositifs d'ajout de flux ont fait leur apparition, tels que la projection de flux et la projection rotative de flux. Ces m\u00e9thodes pallient les inconv\u00e9nients de la m\u00e9thode traditionnelle d'ajout de flux, qui ne permet pas d'assurer un contact complet entre le flux et l'aluminium fondu. La m\u00e9thode de pulv\u00e9risation de flux utilise un gaz inerte comme vecteur pour projeter une certaine quantit\u00e9 de flux en poudre depuis le tube de soufflage vers le fond du bain d\u2019aluminium fondu. Une fois que le flux quitte la torche, il se fragmente en petites gouttelettes, ce qui lui conf\u00e8re une grande surface sp\u00e9cifique. Cela am\u00e9liore consid\u00e9rablement l\u2019efficacit\u00e9 du flux.<\/p>","protected":false},"excerpt":{"rendered":"
The foundry fluxes and the molten aluminum must be in contact with each other to the greatest extent, so that the flux can exert the…<\/p>","protected":false},"author":1,"featured_media":10356,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[120],"tags":[],"class_list":["post-10355","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fluxes"],"yoast_head":"\n
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