{"id":2170,"date":"2017-05-25T11:25:02","date_gmt":"2017-05-25T11:25:02","guid":{"rendered":"http:\/\/pressurediecasting.co.uk\/?page_id=2170"},"modified":"2024-02-01T11:29:16","modified_gmt":"2024-02-01T11:29:16","slug":"concentricity-tolerances","status":"publish","type":"page","link":"https:\/\/staging.norfran.co.uk\/fr\/technical\/concentricity-tolerances\/","title":{"rendered":"Tol\u00e9rances de concentricit\u00e9"},"content":{"rendered":"

\"Concentricity<\/p>\n

Tol\u00e9rances de concentricit\u00e9<\/h1>\n

Concentricit\u00e9<\/h2>\n

La concentricit\u00e9 des surfaces cylindriques est influenc\u00e9e par le dessin de la coul\u00e9e en matrice. Parmi les facteurs impliqu\u00e9s figurent la taille, l’\u00e9paisseur des parois, la forme et la complexit\u00e9 de la pi\u00e8ce coul\u00e9e sous pression.<\/p>\n

La concentricit\u00e9 des surfaces coul\u00e9es sous pression<\/h2>\n

La concentricit\u00e9 des surfaces coul\u00e9es sous pression est influenc\u00e9e par le type des pi\u00e8ces moul\u00e9es sous pression impliqu\u00e9es. Parmi elles il y a des surfaces en relation fixe (form\u00e9es par une pi\u00e8ce moul\u00e9e sous pression) par des sections moul\u00e9es oppos\u00e9es, par des pi\u00e8ces moul\u00e9es auxiliaires, telles que des glissi\u00e8res et des noyaux, ou des combinaisons des deux.<\/p>\n

 <\/p>\n

\"\"1. Tol\u00e9rance de base – surface fixe en relation de moulage sous pression
\n<\/strong>Des surfaces cylindriques A et B sont form\u00e9es par la m\u00eame section de moulage. Si le diam\u00e8tre A est de 178 mm et celui de B est de 102 mm, le diam\u00e8tre A sera concentrique avec celui de B sur une lecture totale de 0,25 mm. [0.10mm + (4 x 0.04)] = 0.26mm.2. Surfaces form\u00e9es par des sections moul\u00e9es oppos\u00e9es
\n<\/strong>Les diam\u00e8tres A et B sont form\u00e9s par des moiti\u00e9s moul\u00e9es oppos\u00e9es. SI la surface projet\u00e9e C de la pi\u00e8ce moul\u00e9e sous pression est de 250 x 380 (950cm2), la surface cylindrique A est de 200mm de diam\u00e8tre et la surface cylindrique B est de 150mm de diam\u00e8tre, le diam\u00e8tre de A sera concentrique avec B sur une lecture totale de 1.06mm.3.Surfaces form\u00e9es par deux membres mobiles
\n<\/strong>Les diam\u00e8tres A et B sont form\u00e9s par des membres moul\u00e9s mobiles. Si le diam\u00e8tre A est de 125mm mm et celui de B est de 50 mm, l’aire projet\u00e9e du membre moul\u00e9 C sera de 160cm2 et l’aire projet\u00e9e du membre moul\u00e9 D est 77cm2, le diam\u00e8tre A sera concentrique avec B sur 0,93 mm.<\/p>\n

 <\/p>\n\n\n\n\n\n\n
Tol\u00e9rance de base pour diam\u00e8tre de 125mm – 0.10+ (2x 0.04)<\/td>\n0.18<\/td>\n<\/tr>\n
Tol\u00e9rance d’aire projet\u00e9e pour membre C (160cm2)<\/td>\n0.45<\/td>\n<\/tr>\n
Tol\u00e9rance d’aire projet\u00e9e pour membre D (77cm2)<\/td>\n0.80<\/td>\n<\/tr>\n
Total <\/strong><\/td>\n0.93<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

<\/p>","protected":false},"excerpt":{"rendered":"

Tol\u00e9rances de concentricit\u00e9 Concentricit\u00e9 La concentricit\u00e9 des surfaces cylindriques est influenc\u00e9e par le dessin de la coul\u00e9e en matrice. Parmi les facteurs impliqu\u00e9s figurent la taille, l’\u00e9paisseur des parois, la forme et la complexit\u00e9 de la pi\u00e8ce coul\u00e9e sous pression. La concentricit\u00e9 des surfaces coul\u00e9es sous pression La concentricit\u00e9 des surfaces coul\u00e9es sous pression est influenc\u00e9e par le type des pi\u00e8ces moul\u00e9es sous pression impliqu\u00e9es. Parmi elles il y a des surfaces en relation fixe (form\u00e9es par une pi\u00e8ce moul\u00e9e…<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":2166,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2170","page","type-page","status-publish","hentry"],"yoast_head":"\nTol\u00e9rances de concentricit\u00e9 - Norfran Limited<\/title>\n<meta name=\"description\" content=\"Concentricity Tolerances: Concentricity of diecast surfaces is affected by the type of die casting elements involved\" \/>\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=\"Tol\u00e9rances de concentricit\u00e9 - Norfran Limited\" \/>\n<meta property=\"og:description\" content=\"Concentricity Tolerances: Concentricity of diecast surfaces is affected by the type of die casting elements involved\" \/>\n<meta property=\"og:url\" content=\"https:\/\/staging.norfran.co.uk\/technical\/concentricity-tolerances\/\" \/>\n<meta property=\"og:site_name\" content=\"Norfran Limited\" \/>\n<meta property=\"article:modified_time\" content=\"2024-02-01T11:29:16+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/staging.norfran.co.uk\/wp-content\/uploads\/2013\/09\/tech-concentricity.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/staging.norfran.co.uk\\\/technical\\\/concentricity-tolerances\\\/\",\"url\":\"https:\\\/\\\/staging.norfran.co.uk\\\/technical\\\/concentricity-tolerances\\\/\",\"name\":\"[:en]Concentricity Tolerances[:de]Konzentrizit\u00e4tstoleranzen[:fr]Tol\u00e9rances de concentricit\u00e9[:es]Tolerancia en los devanados en capas conc\u00e9ntricas[:] - 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