{"id":8985,"date":"2015-09-01T17:35:22","date_gmt":"2015-09-01T17:35:22","guid":{"rendered":"https:\/\/www.mate.com\/it\/technical-resources\/tips-techniques\/punching\/punch-die-maintenance\/galling-prevention\/"},"modified":"2017-08-16T13:32:57","modified_gmt":"2017-08-16T18:32:57","slug":"galling-prevention","status":"publish","type":"page","link":"https:\/\/www.mate.com\/it\/technical-resources\/punch-press-resources\/tips-techniques\/punching\/punch-die-maintenance\/galling-prevention\/","title":{"rendered":"Prevenzione dell\u2019impastamento"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4437\" src=\"https:\/\/www.mate.com\/wp-content\/uploads\/2015\/09\/diagram03.jpg\" alt=\"diagram03\" width=\"146\" height=\"198\" \/><\/p>\n<p>&nbsp;<\/p>\n<h2>Quando si verifica l\u2019impastamento sulle punte dei punzoni<\/h2>\n<p>L\u2019impastamento \u00e8 un\u2019adesione alla punta del punzone del metallo derivante dalla punzonatura, causato dalla pressione e dal calore.<\/p>\n<p>La migliore tecnica per rimuovere l\u2019impastamento \u00e8 eseguire il rubbing mediante una pietra sottile (STO29911). Il rubbing deve essere eseguito parallelamente alla direzione del movimento di punzonatura. Ci\u00f2 lucider\u00e0 la superficie a contatto con il materiale, diminuendo la possibilit\u00e0 di impastamento futuro. Non ricorrere alla sabbiatura, alla levigatrice a nastro e non usare altri metodi abrasivi. Tali metodi creano una finitura superficiale ruvida che consente una pi\u00f9 facile aderenza del materiale all\u2019utensile.<\/p>\n<p>Se l\u2019impastamento rappresenta un problema (accumulo su un fianco del punzone), ordinare punzoni con conicit\u00e0 totale di 2\u00b0. Se si esamina attentamente un punzone Mate, ci si accorge che il tagliente del punzone \u00e8 pi\u00f9 gande in corrispondenza del bordo di taglio. Ci\u00f2 accade perch\u00e9 di solito prevediamo per il punzone una conicit\u00e0 di 1\/4\u00b0 (1\/8\u00b0 per lato). Questa piccola variazione delle dimensioni facilita l\u2019estrazione: \u00e8 meno probabile che il materiale aderisca al punzone. La parte affilabile non \u00e8 interessata. La riduzione del diametro \u00e8 cos\u00ec piccola che il punzone resta nell\u2019ambito delle tolleranze normali per quanto riguarda la dimensione del foro e il gioco matrice nel corso della sua vita utile. \u00c8 molto probabile che la conicit\u00e0 del punzone passi inosservata quando lo si esamina. Ma comunque c\u2019\u00e8, e rende la punzonatura pi\u00f9 semplice. Se in particolare l\u2019impastamento rappresenta un problema, ordinare un punzone con una conicit\u00e0 totale di 2\u00b0 (1\u00b0 per lato) e una matrice con gioco del 20% &#8211; 30%.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Quando si verifica l\u2019impastamento sulle punte dei punzoni L\u2019impastamento \u00e8 un\u2019adesione alla punta del punzone del metallo derivante dalla punzonatura, causato dalla pressione e dal calore. La migliore tecnica per rimuovere l\u2019impastamento \u00e8 eseguire il rubbing mediante una pietra sottile (STO29911). Il rubbing deve essere eseguito parallelamente alla direzione del movimento di punzonatura. Ci\u00f2 [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"parent":8979,"menu_order":520,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-8985","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Prevenzione dell\u2019impastamento - Mate Precision Technologies<\/title>\n<meta name=\"description\" content=\"&nbsp; Quando si verifica l\u2019impastamento sulle punte dei punzoni L\u2019impastamento \u00e8 un\u2019adesione alla punta del punzone del metallo derivante dalla\" \/>\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.mate.com\/it\/technical-resources\/punch-press-resources\/tips-techniques\/punching\/punch-die-maintenance\/galling-prevention\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Prevenzione dell\u2019impastamento\" \/>\n<meta property=\"og:description\" content=\"&nbsp; 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