{"id":1399,"date":"2023-08-11T03:57:01","date_gmt":"2023-08-11T03:57:01","guid":{"rendered":"https:\/\/prototekparts.com\/?p=1399"},"modified":"2024-01-25T07:17:14","modified_gmt":"2024-01-25T07:17:14","slug":"advantages-of-cold-extrusion-process","status":"publish","type":"post","link":"https:\/\/prototekparts.com\/it\/vantaggi-del-processo-di-estrusione-a-freddo\/","title":{"rendered":"Vantaggi del processo di estrusione a freddo"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"1399\" class=\"elementor elementor-1399\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4526133f elementor-section-height-min-height elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-items-middle wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-equal-height-no\" data-id=\"4526133f\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-42580a73\" data-id=\"42580a73\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-75a3fa5e elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"75a3fa5e\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Dettagli del blog<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5bde5f9d elementor-section-boxed elementor-section-height-default elementor-section-height-default wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-equal-height-no\" data-id=\"5bde5f9d\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-463f3a10\" data-id=\"463f3a10\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-648d3918 elementor-widget elementor-widget-image\" data-id=\"648d3918\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/prototekparts.com\/wp-content\/uploads\/elementor\/thumbs\/Cold-Extrusion-11-qa23zzstaotr02dw9lrmckziilk4lj4d49f3v0d2tk.jpg\" title=\"Estrusione a freddo-11\" alt=\"Estrusione a freddo-11\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-499c5844 elementor-invisible elementor-widget elementor-widget-post-info\" data-id=\"499c5844\" data-element_type=\"widget\" data-settings=\"{&quot;_animation_tablet&quot;:&quot;fadeInUp&quot;,&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"post-info.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-63bb4ef elementor-inline-item\" itemprop=\"author\">\n\t\t\t\t\t\t<a href=\"https:\/\/prototekparts.com\/it\/author\/suey\/\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"jki jki-user-light\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-author\">\n\t\t\t\t\t\t\t\t\t\tSuey\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-c6ed1e9 elementor-inline-item\" itemprop=\"datePublished\">\n\t\t\t\t\t\t<a href=\"https:\/\/prototekparts.com\/it\/2023\/08\/11\/\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-calendar\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-date\">\n\t\t\t\t\t\t\t\t\t\t<time>11 agosto 2023<\/time>\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3f274f34 elementor-invisible elementor-widget elementor-widget-theme-post-title elementor-page-title elementor-widget-heading\" data-id=\"3f274f34\" data-element_type=\"widget\" data-settings=\"{&quot;_animation_tablet&quot;:&quot;fadeInUp&quot;,&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"theme-post-title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Vantaggi del processo di estrusione a freddo<\/h1>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5fc8acc5 elementor-widget elementor-widget-text-editor\" data-id=\"5fc8acc5\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>L'estrusione a freddo consiste nell'inserire lo spezzone di metallo nella cavit\u00e0 di estrusione a freddo, a temperatura ambiente, attraverso il punzone fisso della pressa per applicare pressione allo spezzone, in modo che lo spezzone di metallo produca una deformazione plastica e un metodo di lavorazione dei pezzi.<\/p>\n<p>La Cina \u00e8 stata in grado di estrudere a freddo il piombo,<strong><b> stagno, alluminio, rame, zinco e loro leghe, acciaio a basso tenore di carbonio, acciaio a medio tenore di carbonio, acciaio per utensili, acciaio a bassa lega e acciaio inossidabile, nonch\u00e9 acciaio per cuscinetti, acciaio per utensili ad alto tenore di carbonio e ad alta lega di alluminio, acciaio ad alta velocit\u00e0 e altri metalli.<\/b><\/strong> Nelle apparecchiature di estrusione, il nostro Paese ha la capacit\u00e0 di progettare e produrre presse di estrusione.&nbsp;<\/p>\n<p>Oltre alla pressa meccanica generale, la pressa idraulica, la pressa per estrusione a freddo, la pressa a frizione e le apparecchiature ad alta velocit\u00e0 e ad alta energia sono state utilizzate con successo per la produzione di estrusione dura.<\/p>\n<h2><strong><b>Definire<\/b><\/strong><\/h2>\n<p>L'estrusione \u00e8 un processo che forza i frammenti d'oro a produrre <strong><b>flusso di plastica<\/b><\/strong> attraverso lo spazio tra il punzone e la matrice o l'uscita della matrice, per realizzare le parti cave o le parti la cui sezione \u00e8 pi\u00f9 piccola della sezione del pezzo grezzo. Se il pezzo grezzo viene estruso senza calore, si parla di estrusione a freddo. L'estrusione a freddo \u00e8 una delle tecnologie di lavorazione delle parti senza truciolo e con meno truciolo, quindi \u00e8 una tecnologia avanzata nella lavorazione della plastica dei trucioli d'oro. Se il grezzo viene pressato riscaldandolo a una temperatura inferiore alla temperatura di ricristallizzazione, si parla di estrusione a caldo. L'estrusione a caldo ha ancora il vantaggio di avere meno trucioli.<\/p>\n<h2><strong><b>Vantaggi<\/b><\/strong><\/h2>\n<ol>\n<li><strong><b>Dimensionamento accurato<\/b><\/strong><\/li>\n<\/ol>\n<p>La precisione dimensionale generale dei pezzi estrusi a freddo sviluppati nel nostro Paese \u00e8 fino a 8 ~ 9 gradi. Se si utilizza una lubrificazione ideale, \u00e8 seconda solo alla superficie di lucidatura fine. Pertanto, i pezzi prodotti con il metodo dell'estrusione a freddo in genere non hanno bisogno di essere rilavorati e un piccolo numero deve solo essere rifinito (rettifica). Risparmia i materiali.<\/p>\n<ol start=\"2\">\n<li><strong><b>Risparmia i materiali<\/b><\/strong><\/li>\n<\/ol>\n<p>Il tasso di utilizzo dei materiali estrusi a freddo pu\u00f2 solitamente raggiungere pi\u00f9 di 80%. Ad esempio, il tasso di utilizzo del materiale per il taglio dinamico del perno del pistone dell'automobile del marchio Jiefang era di 43,3%, e con l'estrusione a freddo il tasso di utilizzo del materiale \u00e8 salito a 92%; ad esempio, dopo che il manicotto del cuscinetto del giunto universale \u00e8 passato all'estrusione a freddo, il tasso di utilizzo del materiale \u00e8 aumentato da 27,8% a 64%. Si pu\u00f2 notare che il metodo di estrusione a freddo pu\u00f2 far risparmiare molto acciaio e materiali metallici non ferrosi nella produzione di parti di macchine.<\/p>\n<ol start=\"3\">\n<li><strong><b>Alta efficienza produttiva<\/b><\/strong><\/li>\n<\/ol>\n<p>L'efficienza della produzione di pezzi meccanici mediante estrusione a freddo \u00e8 molto elevata, soprattutto nella produzione di pezzi di grandi dimensioni. La produzione mediante estrusione a freddo \u00e8 di diverse volte, decine di volte o addirittura centinaia di volte rispetto al taglio. Ad esempio, i pistoni estrusi a freddo per le automobili sono 3,2 volte pi\u00f9 produttivi di quelli lavorati a macchina, e gli automi per pistoni estrusi a freddo sono ora utilizzati per aumentare ulteriormente la produttivit\u00e0. La produttivit\u00e0 di un automa di estrusione a freddo \u00e8 equivalente a quella di 100 torni normali o di 10 torni automatici a quattro mandrini.<\/p>\n<ol start=\"4\">\n<li><strong><b>Ampia applicazione<\/b><\/strong><\/li>\n<\/ol>\n<p>Ad esempio, sezioni di forma speciale, denti interni, fori di forma speciale e fori ciechi, Questi pezzi sono difficili da completare con altri metodi di lavorazione, ma \u00e8 molto conveniente lavorarli con l'estrusione a freddo.<\/p>\n<ol start=\"5\">\n<li><strong><b>Alta resistenza<\/b><\/strong><\/li>\n<\/ol>\n<p>Poich\u00e9 l'estrusione a freddo adotta la caratteristica di rafforzamento della deformazione a freddo dei materiali metallici, cio\u00e8 il pezzo grezzo di metallo si trova in uno stato di tensione di compressione a tre vie durante il processo di estrusione, e il materiale \u00e8 compatto e ha una direzione di flusso continuo delle fibre dopo la deformazione, quindi la resistenza dei pezzi \u00e8 notevolmente migliorata. In questo modo, si possono utilizzare materiali a bassa resistenza al posto di quelli ad alta resistenza. Ad esempio, in passato, l'acciaio 20Cr veniva utilizzato per produrre gli spinotti dei pistoni del marchio di liberazione mediante taglio. Ora, l'acciaio 20 viene utilizzato per produrre gli spinotti dei pistoni mediante estrusione a freddo. Dopo il test delle prestazioni, il metodo di estrusione a freddo \u00e8 superiore al metodo di taglio per la produzione di pistoni.<\/p>\n<p>Se ha qualche esigenza di estrusione a freddo, non esiti a contattare Prototek,<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-12e63a6 elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-height-default wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-equal-height-no elementor-invisible\" data-id=\"12e63a6\" data-element_type=\"section\" data-settings=\"{&quot;animation_tablet&quot;:&quot;fadeInUp&quot;,&quot;animation&quot;:&quot;fadeInUp&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-5bc2d835\" data-id=\"5bc2d835\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-56c8abd4 elementor-widget__width-auto elementor-widget-mobile__width-inherit elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"56c8abd4\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Tags:    <\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2a19fd5c elementor-widget__width-auto elementor-invisible elementor-widget elementor-widget-post-info\" data-id=\"2a19fd5c\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" data-widget_type=\"post-info.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-bf2a931 elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"far fa-tags\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-custom\">\n\t\t\t\t\t\t\t\t\t\testrusione a freddo, impatto a freddo\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-74bd8cd1\" data-id=\"74bd8cd1\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element 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class=\"elementor-button-text\">CONTATTO<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Blog Details Cold extrusion is to put the metal blank in the cold extrusion cavity, at room temperature, through the press fixed punch to apply pressure to the blank, so that the metal blank to produce plastic deformation and parts processing method. China has been able to cold extrusion of lead, tin, aluminum, copper, zinc and their alloys, low carbon steel, medium carbon steel, tool steel, low alloy steel, and stainless steel, and even bearing steel, high carbon and high aluminum alloy tool steel, high-speed steel, and other metals can be cold extrusion of a certain amount of deformation.In extrusion equipment, our country has the ability to design and manufacture extrusion presses.&nbsp; In addition to the general mechanical press, hydraulic press, cold extrusion press, friction press,, and high-speed high-energy equipment have been successfully used for hard extrusion production. Define Extrusion is a process that forces the gold chips to produce plastic flow through the gap between the punch and the die or the die outlet to make the hollow parts or the parts whose section is smaller than the blank section.If the blank is extruded without heat, it is called cold extrusion.Cold extrusion is one of the processing technology of no chip and less chip parts, so it is an advanced technology in the plastic processing of gold chips. If the blank is pressed by heating it to a temperature below the recrystallization temperature, it is called warm extrusion. Warm extrusion still has the advantage of fewer chips. Advantages Accurate sizing The general dimension accuracy of cold extruded parts developed in our country is up to 8 ~ 9 grades. If ideal lubrication is used, it is second only to the fine polishing surface. Therefore, parts manufactured by the cold extrusion method generally do not need to be reworked, and a small number only need to be finished (grinding). Save materials. Save materials The utilization rate of cold extruded materials can usually reach more than 80%. Such as the Jiefang brand automobile piston pin dynamic cutting material utilization rate of 43.3%, and with cold extrusion material utilization rate increased to 92%; For example, after the universal joint bearing sleeve is changed to cold extrusion, the material utilization rate is increased from 27.8% to 64%. It can be seen that the cold extrusion method can save a lot of steel and non-ferrous metal materials in the production of machine parts High production efficiency The efficiency of producing mechanical parts by cold extrusion is very high, especially in the production of large batch parts. The production by cold extrusion is several times, dozens of times, or even hundreds of times as compared with cutting. For example, cold-extruded piston pins for automobiles are 3.2 times more productive than machined ones, and cold-extruded piston pin automatons are now used to further increase productivity. The productivity of one cold extrusion automaton is equivalent to that of 100 regular lathes or 10 four-spindle automatic lathes. Wide application Such as special-shaped sections, internal teeth, special-shaped holes, and blind holes, These parts are difficult to complete by other processing methods, but it is very convenient to process with cold extrusion. High strength Because the cold extrusion adopts the cold deformation strengthening characteristic of metal materials, that is, the metal blank is in the state of three-way compressive stress during the extrusion process, and the material is compact and has continuous fiber flow direction after deformation, so the strength of the parts is greatly improved. In this way, low-strength materials can be used instead of high-strength materials. For example, in the past, 20Cr steel was used to manufacture liberation brand piston pins by cutting. Now, 20 steel is used to manufacture piston pins by cold extrusion. After the performance test, the cold extrusion method is higher than the cutting method to manufacture piston pins. If&nbsp; you have any needs for cold extrusion, ple feel free to contact Prototek, Tags: Social Network: Recently Posts Online Help! +(86) 0791-86372550 WANT TO DISCUSS IN DETAIL Contact Our Consultant Now CONTACT NOW<\/p>","protected":false},"author":1,"featured_media":781,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1399","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Advantages Of Cold Extrusion Process - Prototek Parts<\/title>\n<meta name=\"description\" content=\"Advantages Of Cold Extrusion Process\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/prototekparts.com\/it\/vantaggi-del-processo-di-estrusione-a-freddo\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Advantages Of Cold Extrusion Process - 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