{"id":570,"date":"2019-02-07T21:50:36","date_gmt":"2019-02-07T18:50:36","guid":{"rendered":"https:\/\/metallsmaster.ru\/?p=570"},"modified":"2020-11-02T11:41:08","modified_gmt":"2020-11-02T08:41:08","slug":"legirovannaya-stal","status":"publish","type":"post","link":"https:\/\/metallsmaster.pro\/it\/acciaio-legato\/","title":{"rendered":"Acciaio legato"},"content":{"rendered":"<blockquote><p><strong>Acciaio legato<\/strong> \u2014 \u00e8 un acciaio che comprende vari elementi di lega che conferiscono all&#039;acciaio le propriet\u00e0 meccaniche e fisiche richieste.<\/p><\/blockquote>\n<p>Questi elementi aumentano inoltre significativamente la resistenza alla corrosione, la resistenza alla fragilit\u00e0 e aumentano la robustezza.<\/p>\n<p><strong>Elementi in lega di acciaio<\/strong>\u00a0 pu\u00f2 essere inserito nel seguente elenco:<\/p>\n<ul>\n<li>azoto;<\/li>\n<li>rame;<\/li>\n<li>nichel;<\/li>\n<li>cromo;<\/li>\n<li>vanadio.<\/li>\n<\/ul>\n\n\t<!--<div class='top-banner-pages'>\t\n\n\t<\/div>--->\n\t\n<p>Si tratta di additivi classici ampiamente utilizzati in produzione. Gli acciai legati si dividono in tre classi principali:<\/p>\n<ul>\n<li>bassolegato;<\/li>\n<li>altolegato;<\/li>\n<li>lega media.<\/li>\n<\/ul>\n<p>Gli acciai legati sono classificati in base alla percentuale di elementi di lega. Ciascuno di questi tipi di acciaio \u00e8 prodotto mediante metallurgia, ma in alcuni casi la legatura pu\u00f2 essere eseguita solo su una superficie specifica per conferire le propriet\u00e0 di resistenza richieste a prodotti e componenti. L&#039;acciaio legato acquisisce le sue propriet\u00e0 in varie fasi della produzione del metallo, con l&#039;aggiunta di elementi di lega. L&#039;acciaio legato pu\u00f2 includere uno o pi\u00f9 elementi di lega, che aumentano la resistenza strutturale della lega. L&#039;acciaio legato \u00e8 prodotto in diverse tipologie principali:<\/p>\n<ul>\n<li>strumentale;<\/li>\n<li>strutturale;<\/li>\n<li>acciaio con propriet\u00e0 chimiche e fisiche speciali.<\/li>\n<\/ul>\n<h2>Marcatura degli acciai legati<\/h2>\n\n<!---<div class='top-banner-pages'>\n\n<\/div>-->\n\n\t\n<p>Gli acciai legati sono contrassegnati da lettere che indicano l&#039;elemento di lega contenuto nella lega e da numeri che indicano la percentuale media di tale elemento. I numeri all&#039;inizio del nome del grado indicano il contenuto di carbonio del materiale. Due numeri indicano i centesimi di punto percentuale; un numero indica i decimi. <strong>Marcatura degli acciai legati<\/strong> possono avere designazioni aggiuntive. Ad esempio, sono presenti le seguenti designazioni comuni:<\/p>\n<ul>\n<li>P \u2014 alta velocit\u00e0;<\/li>\n<li>\u0428 \u2013 cuscinetto a sfere;<\/li>\n<li>A - automatico;<\/li>\n<li>L - ottenuto per fusione;<\/li>\n<li>E \u2014 ingegneria elettrica.<\/li>\n<\/ul>\n<p>Il contenuto di azoto \u00e8 indicato dalla lettera A al centro del grado. Due A (AA) indicano la composizione dell&#039;acciaio ultrapuro e compaiono alla fine. L&#039;acciaio di alta qualit\u00e0 termina con la lettera \u0428. Esempi di marcature per acciai legati:<\/p>\n<p>18\u0425\u0413\u0422 significa:<\/p>\n<ul>\n<li>0,18% C;<\/li>\n<li>1% Cr;<\/li>\n<li>1% Mn;<\/li>\n<li>0,1% Ti.<\/li>\n<\/ul>\n<p>L&#039;acciaio 30KhGSA contiene:<\/p>\n<ul>\n<li>0,30% C;<\/li>\n<li>0,8-1,1% Cr;<\/li>\n<li>0,9-1,2% Mn;<\/li>\n<li>0,8-1,25% Si.<\/li>\n<\/ul>\n<h3>Scopo degli acciai legati<\/h3>\n<p><strong>Scopo degli acciai legati<\/strong> La gamma di acciai legati \u00e8 molto diversificata, poich\u00e9, con gli opportuni additivi di lega, questo acciaio \u00e8 in grado di sopportare un&#039;ampia gamma di carichi, a differenza dell&#039;acciaio standard. La maggior parte delle propriet\u00e0 pu\u00f2 essere regolata aggiungendo gli opportuni elementi di lega. Lo scopo principale degli acciai legati \u00e8 la produzione di strumenti chirurgici, attrezzature per gioielleria, varie strutture metalliche, rinforzi per costruzioni, macchinari industriali e meccanismi soggetti a carichi pesanti. Gli acciai legati per utensili vengono utilizzati per la produzione di componenti che operano ad alta pressione, nonch\u00e9 nella produzione di ingranaggi principali, rulli complessi, sezioni di stampi per forgiatura, ecc. Altri tipi vengono utilizzati per componenti che richiedono una maggiore resistenza all&#039;usura, una buona resistenza alla flessione, resistenza al carico di contatto e l&#039;eccellente elasticit\u00e0 richiesta.<\/p>\n<h4>Tipi di acciaio legato<\/h4>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-572 alignleft\" src=\"https:\/\/metallsmaster.pro\/wp-content\/uploads\/2019\/02\/\u0412\u0438\u0434\u044b-\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439-\u0441\u0442\u0430\u043b\u0438.webp\" alt=\"Tipi di acciaio legato\" width=\"997\" height=\"573\" srcset=\"https:\/\/metallsmaster.pro\/wp-content\/uploads\/2019\/02\/\u0412\u0438\u0434\u044b-\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439-\u0441\u0442\u0430\u043b\u0438.webp 997w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2019\/02\/\u0412\u0438\u0434\u044b-\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439-\u0441\u0442\u0430\u043b\u0438-300x172.webp 300w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2019\/02\/\u0412\u0438\u0434\u044b-\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439-\u0441\u0442\u0430\u043b\u0438-768x441.webp 768w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2019\/02\/\u0412\u0438\u0434\u044b-\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439-\u0441\u0442\u0430\u043b\u0438-254x146.webp 254w\" sizes=\"auto, (max-width: 997px) 100vw, 997px\" \/>Gli acciai legati si differenziano in base alla percentuale di elementi di lega presenti nella lega. Si classificano come segue:<\/p>\n<ul>\n<li>bassolegati e contengono fino a 2,5% elementi di lega;<\/li>\n<li>mediamente legato, avente da 2,5 a 10% elementi di lega;<\/li>\n<li>Quelli ad alta lega contengono 10 - 50% di tali elementi.<\/li>\n<\/ul>\n<blockquote><p><strong>Tipi di acciaio legato <\/strong>Variano. Sono classificati in base alla percentuale di componenti ad alte prestazioni, come zirconio, vanadio, tantalio e altri elementi chimici, come il carbonio, nonch\u00e9 in base alle specifiche strutturali:<\/p>\n<ul>\n<li>ledeburite \u2013 presenza di carburi primari;<\/li>\n<li>eutettoide \u2013 la struttura metallica \u00e8 perlitica;<\/li>\n<li>ipereutettoide \u2013 presenza di carburi secondari;<\/li>\n<li>ipoeutettoide: c&#039;\u00e8 un eccesso di ferrite.<\/li>\n<\/ul>\n<\/blockquote>\n<p>A seconda del grado di utilizzo e dello scopo, gli acciai vengono classificati come: strutturali, per utensili e con propriet\u00e0 speciali.<\/p>\n<p><strong>Tipi di acciaio legato<\/strong> Tra questi rientrano anche gli acciai inossidabili, che presentano un&#039;eccellente resistenza alla corrosione chimica ed elettrochimica. Gli acciai speciali resistenti al calore offrono una buona resistenza alla degradazione chimica in un ambiente gassoso a temperature superiori a 500 \u00b0C, ma operano con carichi leggeri o nulli. Gli acciai resistenti al calore operano sotto carichi elevati per un periodo di tempo considerevole, mantenendo una sufficiente resistenza al calore. I tipi di acciaio strutturale legato includono:<\/p>\n<ul>\n<li>alta qualit\u00e0;<\/li>\n<li>alta qualit\u00e0;<\/li>\n<li>qualit\u00e0 molto elevata.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>L&#039;acciaio legato \u00e8 un acciaio che contiene vari elementi di lega che conferiscono all&#039;acciaio le caratteristiche richieste...<\/p>","protected":false},"author":1,"featured_media":571,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-570","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-metalls"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u0430\u044f \u0441\u0442\u0430\u043b\u044c, \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u0430 \u0438 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