{"id":2181,"date":"2017-05-25T11:37:52","date_gmt":"2017-05-25T11:37:52","guid":{"rendered":"http:\/\/pressurediecasting.co.uk\/?page_id=2181"},"modified":"2024-02-01T15:31:40","modified_gmt":"2024-02-01T15:31:40","slug":"ejector-pins-and-draft","status":"publish","type":"page","link":"https:\/\/staging.norfran.co.uk\/fr\/technical\/ejector-pins-and-draft\/","title":{"rendered":"Tiges d’\u00e9jection et D\u00e9pouille"},"content":{"rendered":"

\"Ejector<\/p>\n

Tiges d’\u00e9jection et D\u00e9pouille<\/h1>\n

Marques de tiges d’\u00e9jection<\/h2>\n

Les marques de tiges d’\u00e9jection sur les pi\u00e8ces moul\u00e9es sous pression sont form\u00e9es par des tiges amovibles qui \u00e9jectent les pi\u00e8ces moul\u00e9es du moule. Le nombre et l’emplacement des tiges d’\u00e9jection requis, pour la production \u00e9conomique, varieront en fonction de la taille et de la complexit\u00e9 de la pi\u00e8ce moul\u00e9e ainsi que d’autres facteurs.<\/p>\n

Emplacement des tiges d’\u00e9jection<\/h2>\n

L’emplacement des tiges d’\u00e9jection est choisi par le technicien responsable du moulage et soumis \u00e0 l’accord du client, lorsque cela est requis.<\/p>\n

Marques de tiges d’\u00e9jection acceptables<\/h2>\n

Les marques des tiges d’\u00e9jection peuvent atteindre une hauteur maximale de 0.38mm ou peuvent \u00eatre en creux de profondeur maximale de 0.38mm. Les marques de tiges d’\u00e9jection sont entour\u00e9es de bavures de m\u00e9tal.
\nSi l’utilisation finale de la pi\u00e8ce le permet, les marques des tiges d’\u00e9jection ne seront pas \u00e9loign\u00e9es. Lorsque cela ne convient pas, les bavures des marques des tiges d’\u00e9jection seront \u00e9cras\u00e9es ou aplaties.<\/p>\n

Note – <\/span> L’\u00e9limination totale des marques des tiges d’\u00e9jection et des bavures par usinage ou par op\u00e9rations de grattage \u00e0 la main devra \u00eatre demand\u00e9e uniquement lorsque les exigences justifient la d\u00e9pense suppl\u00e9mentaire que repr\u00e9sentent ces op\u00e9rations.<\/p>\n

Exigences en mati\u00e8re de d\u00e9pouilles<\/h2>\n

Les parois des pi\u00e8ces moul\u00e9es qui sont perpendiculaires au plan de s\u00e9paration du moule requi\u00e8rent une d\u00e9pouille ou un effilage. La d\u00e9pouille n’est pas toujours la m\u00eame. Elle variera en fonction de l’alliage utilis\u00e9 et de la profondeur de la paroi, comme indiqu\u00e9. La d\u00e9pouille requise sur les parois externes est la moiti\u00e9 de celle requise pour les parois internes.<\/p>\n

C’est une bonne politique que de sp\u00e9cifier un grand angle de d\u00e9pouille lorsque cela est possible, mais les angles d’un degr\u00e9 ou moins sont acceptables.<\/p>","protected":false},"excerpt":{"rendered":"

Tiges d’\u00e9jection et D\u00e9pouille Marques de tiges d’\u00e9jection Les marques de tiges d’\u00e9jection sur les pi\u00e8ces moul\u00e9es sous pression sont form\u00e9es par des tiges amovibles qui \u00e9jectent les pi\u00e8ces moul\u00e9es du moule. Le nombre et l’emplacement des tiges d’\u00e9jection requis, pour la production \u00e9conomique, varieront en fonction de la taille et de la complexit\u00e9 de la pi\u00e8ce moul\u00e9e ainsi que d’autres facteurs. Emplacement des tiges d’\u00e9jection L’emplacement des tiges d’\u00e9jection est choisi par le technicien responsable du moulage et soumis…<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":2166,"menu_order":6,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2181","page","type-page","status-publish","hentry"],"yoast_head":"\nEjector Pins and Draft | Ejector Pin Marks | Norfran<\/title>\n<meta name=\"description\" content=\"Location of Ejector pins shall be at the option of the die caster subject to the customer's agreement where required.\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ejector Pins and Draft | Ejector Pin Marks | Norfran\" \/>\n<meta property=\"og:description\" content=\"Location 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