{"id":560,"date":"2019-02-05T00:12:31","date_gmt":"2019-02-04T21:12:31","guid":{"rendered":"https:\/\/metallsmaster.ru\/?p=560"},"modified":"2020-11-02T11:41:50","modified_gmt":"2020-11-02T08:41:50","slug":"stykovaya-svarka","status":"publish","type":"post","link":"https:\/\/metallsmaster.pro\/it\/saldatura-di-testa\/","title":{"rendered":"Saldatura di testa"},"content":{"rendered":"<p><strong>Saldatura di testa <\/strong>Si tratta di un tipo di saldatura a resistenza che utilizza calore e pressione per unire le superfici da unire. L&#039;effetto termico di una corrente elettrica riscalda notevolmente la superficie metallica, facendo s\u00ec che le superfici vengano premute insieme per formare un legame forte a livello interatomico. Questo metodo di saldatura \u00e8 emerso oltre 100 anni fa. Un esempio specifico di questo tipo di connessione \u00e8 la saldatura di testa a condensatore. <strong>Saldatura di testa <\/strong>Viene utilizzato nelle condutture, nei lavori di riparazione in cui \u00e8 necessario saldare tubi filettati a un&#039;asta di perforazione, ecc.<\/p>\n<h2>Tecnologia di saldatura di testa<\/h2>\n<p><strong>\n\t<!--<div class='top-banner-pages'>\t\n\n\t<\/div>--->\n\t<\/strong><\/p>\n<p><strong>Tecnologia di saldatura di testa \u00a0<\/strong>comporta un intenso riscaldamento della superficie da saldare e un&#039;azione meccanica sulla parte per ottenere un giunto saldato. I requisiti sono <strong>tecnologia di saldatura di testa \u00a0<\/strong>ha avuto successo, include:<\/p>\n<ul>\n<li>Preparazione accurata delle estremit\u00e0 della superficie metallica. Devono essere montate il pi\u00f9 uniformemente possibile. Questo garantir\u00e0 una giunzione resistente. La rimozione di contaminanti e ossidi superficiali migliora anche la qualit\u00e0 della saldatura. Questo \u00e8 particolarmente importante quando la superficie \u00e8 di 200 millimetri quadrati;<\/li>\n<li>fissaggio delle parti da saldare nella saldatrice, regolazione del loro allineamento;<\/li>\n<li>passando una corrente elettrica ad alta frequenza, che riscalda e fonde le superfici da unire;<\/li>\n<li>compressione meccanica dei pezzi lavorati, che provoca deformazione plastica, distruzione degli ossidi rimanenti e legame atomico di due superfici;<\/li>\n<li>il processo di cristallizzazione e formazione del reticolo cristallino del giunto saldato.<\/li>\n<\/ul>\n<p><strong><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-561 aligncenter\" src=\"https:\/\/metallsmaster.pro\/wp-content\/uploads\/2019\/02\/\u0421\u0442\u044b\u043a\u043e\u0432\u0430\u044f-\u0441\u0432\u0430\u0440\u043a\u0430-\u0444\u043e\u0442\u043e.webp\" alt=\"\" width=\"363\" height=\"257\" srcset=\"https:\/\/metallsmaster.pro\/wp-content\/uploads\/2019\/02\/\u0421\u0442\u044b\u043a\u043e\u0432\u0430\u044f-\u0441\u0432\u0430\u0440\u043a\u0430-\u0444\u043e\u0442\u043e.webp 363w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2019\/02\/\u0421\u0442\u044b\u043a\u043e\u0432\u0430\u044f-\u0441\u0432\u0430\u0440\u043a\u0430-\u0444\u043e\u0442\u043e-300x212.webp 300w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2019\/02\/\u0421\u0442\u044b\u043a\u043e\u0432\u0430\u044f-\u0441\u0432\u0430\u0440\u043a\u0430-\u0444\u043e\u0442\u043e-254x180.webp 254w\" sizes=\"auto, (max-width: 363px) 100vw, 363px\" \/><\/strong><\/p>\n<p>Come <strong>tecnologia di saldatura di testa \u00a0<\/strong>Permette di collegare componenti per scopi diversi. La qualit\u00e0 della connessione garantisce una lunga durata.<\/p>\n<h3>Metodi di saldatura di testa<\/h3>\n<p>SU <strong>metodi di saldatura di testa \u00a0<\/strong>influenza:<\/p>\n<ul>\n<li>grado del metallo da saldare, sua composizione;<\/li>\n<li>qual \u00e8 l&#039;area della sezione trasversale nella giunzione metallica;<\/li>\n<li>Quali sono i requisiti di qualit\u00e0 di un giunto saldato?<\/li>\n<\/ul>\n\n<!---<div class='top-banner-pages'>\n\n<\/div>-->\n\n\t\n<p>Il primo metodo \u00e8 la saldatura a resistenza.<\/p>\n<p>Viene utilizzata per unire componenti con una sezione trasversale fino a 200 millimetri quadrati. A tale scopo, i componenti vengono saldamente fissati in appositi morsetti della saldatrice. Le superfici da saldare vengono pressate saldamente l&#039;una contro l&#039;altra. Una corrente elettrica di 1.000-10.000 A viene quindi fatta passare attraverso il componente. La temperatura di riscaldamento alle estremit\u00e0 del componente \u00e8 inferiore al punto di fusione del metallo. Dopo il riscaldamento, i componenti vengono compressi mentre la corrente \u00e8 interrotta. La saldatura a resistenza viene utilizzata per unire barre e tubi in acciaio a basso tenore di carbonio di piccola sezione, nonch\u00e9 fili.<\/p>\n<p>Il secondo metodo \u00e8 la saldatura per fusione.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-562 alignleft\" src=\"https:\/\/metallsmaster.pro\/wp-content\/uploads\/2019\/02\/\u0421\u0442\u044b\u043a\u043e\u0432\u0430\u044f-\u0441\u0432\u0430\u0440\u043a\u0430.webp\" alt=\"\" width=\"556\" height=\"300\" srcset=\"https:\/\/metallsmaster.pro\/wp-content\/uploads\/2019\/02\/\u0421\u0442\u044b\u043a\u043e\u0432\u0430\u044f-\u0441\u0432\u0430\u0440\u043a\u0430.webp 556w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2019\/02\/\u0421\u0442\u044b\u043a\u043e\u0432\u0430\u044f-\u0441\u0432\u0430\u0440\u043a\u0430-300x162.webp 300w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2019\/02\/\u0421\u0442\u044b\u043a\u043e\u0432\u0430\u044f-\u0441\u0432\u0430\u0440\u043a\u0430-254x137.webp 254w\" sizes=\"auto, (max-width: 556px) 100vw, 556px\" \/>Il processo di saldatura di questo metodo \u00e8 simile al primo. Tuttavia, con questo metodo, la corrente viene applicata prima, quindi si uniscono i pezzi. Solo uno dei pezzi viene mosso a bassa velocit\u00e0. La temperatura media di fusione aumenta gradualmente, ottenendo uno strato uniforme di metallo fuso. Questo metodo pu\u00f2 essere continuo o intermittente. La sezione trasversale del pezzo saldato pu\u00f2 raggiungere i 100.000 millimetri quadrati. I pezzi saldati con questo metodo includono ruote, anelli, tubi, rotaie, ecc.<\/p>\n<p>Come <strong>metodi di saldatura di testa \u00a0<\/strong>consentono di ampliare la gamma di materiali saldabili.<\/p>\n<h4>Saldatura di testa del metallo<\/h4>\n<p><strong>Saldatura di testa del metallo \u00a0<\/strong>\u00c8 un metodo pratico per unire le rotaie ferroviarie creando un giunto senza soluzione di continuit\u00e0. Permette la produzione di lunghi pezzi grezzi in acciaio, metalli non ferrosi e loro leghe. <strong>Saldatura di testa del metallo <\/strong>Viene utilizzato per produrre catene di ancoraggio, utensili da taglio e bobine per grandi unit\u00e0 di refrigerazione. Nel complesso, questo metodo di saldatura ha una gamma di applicazioni molto ampia.<\/p>","protected":false},"excerpt":{"rendered":"<p>La saldatura di testa \u00e8 un tipo di saldatura a resistenza che utilizza calore e pressione per creare una superficie di giunzione. Il calore\u2026<\/p>","protected":false},"author":1,"featured_media":561,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-560","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-svarka-metallov"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0441\u0442\u044b\u043a\u043e\u0432\u043e\u0439 \u0441\u0432\u0430\u0440\u043a\u0438, \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438, \u0442\u0435\u0445\u043d\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0445\u0430\u0440\u0430\u043a\u0442\u0435\u0440\u0438\u0441\u0442\u0438\u043a \u0438 \u0443\u0441\u043b\u043e\u0432\u0438\u0439 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f\" \/>\n\t<meta name=\"robots\" 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