{"id":12987,"date":"2022-01-27T16:33:56","date_gmt":"2022-01-27T15:33:56","guid":{"rendered":"https:\/\/www.evirtitalia.com\/faq\/"},"modified":"2022-01-29T16:10:15","modified_gmt":"2022-01-29T15:10:15","slug":"faq","status":"publish","type":"page","link":"https:\/\/www.evirtitalia.com\/en\/faq\/","title":{"rendered":"FAQ"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"12987\" class=\"elementor elementor-12987 elementor-12749\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e253ede qodef_elementor_container_inner elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-height-default parallax_section_no\" data-id=\"e253ede\" data-element_type=\"section\" data-e-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-100 elementor-top-column elementor-element elementor-element-1632497\" data-id=\"1632497\" data-element_type=\"column\" data-e-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-e150c42 elementor-widget elementor-widget-qodef_accordion\" data-id=\"e150c42\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"qodef_accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n        <div class=\"qodef-accordion-holder clearfix qodef-toggle qodef-boxed \">\n            <h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhat is forming process?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<p>Forming process is a cold forming operation standardly generated by hydraulic, mechanical and\/or electromechanical forces.<\/p>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhat is Thread Rolling?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<p>Thread rolling is a type of threading process which involves deforming a metal stock by rolling it through dies.<\/p><p>This process forms external threads along the surface of the metal stock. Internal threads can be formed using the same principle, specifically termed thread forming.<\/p><p>In contrast with other widely used threading processes such as thread cutting, thread rolling is not a subtractive process.<\/p><p>This means it does not remove metal from the stock.<\/p><p>The rolled threaded fasteners offer advantages such as stronger threads, precise final dimensions, good surface finish, and a lower coefficient of friction.<\/p>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhich Threads can be realized by Thread Rolling Processes?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\tThe threads which can be realized using thread rolling operations are normally classified according to their shape.\n\n<img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-12785 size-medium\" src=\"https:\/\/www.evirtitalia.com\/wp-content\/uploads\/2022\/01\/FAQ-Figura1-600x338.jpg\" alt=\"\" width=\"600\" height=\"338\" srcset=\"https:\/\/www.evirtitalia.com\/wp-content\/uploads\/2022\/01\/FAQ-Figura1-600x338.jpg 600w, https:\/\/www.evirtitalia.com\/wp-content\/uploads\/2022\/01\/FAQ-Figura1-768x432.jpg 768w, https:\/\/www.evirtitalia.com\/wp-content\/uploads\/2022\/01\/FAQ-Figura1-1536x864.jpg 1536w, https:\/\/www.evirtitalia.com\/wp-content\/uploads\/2022\/01\/FAQ-Figura1-100x56.jpg 100w, https:\/\/www.evirtitalia.com\/wp-content\/uploads\/2022\/01\/FAQ-Figura1.jpg 1600w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\n<ul>\n \t<li><strong>V-Thread<\/strong>: triangular threads with flanks that typically form 60\u00b0 with each other. The crests and roots are sharp, but in some cases, as a small flat portion due to limitations in fabrication.<\/li>\n \t<li><strong>American National Thread<\/strong>: formerly known as the United States Standard Screw Thread, the American National Thread is a more standardized version of the V-thread which has specific dimensions to the flatness of the crests and roots of the threads.<\/li>\n \t<li><strong>British Whitworth Thread<\/strong>: British counterpart of the American National Thread.<\/li>\n \t<li><strong>Unified Thread<\/strong>:\u00a0the thread form replaced the American National Thread along with thread standards from Canada and Britain. Developed to allow interchangeability of parts, Unified Threads still have the V-shape profile but with rounded or flat crests and roots. The Unified Thread Standard (UTS) consists of series, namely, Unified Fine (UNF), Unified Coarse (UNC), Unified Extra Fine (UNEF), and Unified Special (UNS).<\/li>\n \t<li><strong>Metric Thread<\/strong>: developed to transition from the imperial-based measurement into the metric system. This was brought by the ISO, displacing the UTS thread form.<\/li>\n \t<li><strong>Square Thread<\/strong>: special-purpose threads used for power transmission. Theoretically, they are the ideal thread for mechanisms and drive applications due to the perpendicularity of the load-bearing faces or flanks with the axis. However, this form is not practical due to manufacturing limitations.<\/li>\n \t<li><strong>Acme Thread<\/strong>: the thread form is a variation of the square thread. The acme thread is characterized by having a trapezoidal form with a narrower root than its crest. Acme threads are stronger and easier to machine than square threads.<\/li>\n \t<li><strong>Buttress Thread<\/strong>: in questo tipo di filettatura, un fianco \u00e8 perpendicolare o leggermente inclinato rispetto all'asse mentre l'altro ha un angolo di 45\u00b0. Questa geometria del filetto \u00e8 progettata per trasmettere carichi elevati in una direzione.<\/li>\n \t<li><strong>Filettatura rotonda<\/strong>: in questo caso i filetti hanno creste e radici molto arrotondate con un angolo del fianco pari a 30\u00b0. Il profilo arrotondato consente di spostare i detriti per evitare la loro interferenza con l'ingranamento dei filetti.<\/li>\n<\/ul>\n<strong>Altri tipi di profili rullati:<\/strong>\n<ul>\n \t<li>Tirante.<\/li>\n \t<li>Ingranaggio a vite senza fine.<\/li>\n \t<li>Profilo BSPT per collegamenti di tubazioni.<\/li>\n \t<li>Filettaure tonde.<\/li>\n \t<li>Dentature.<\/li>\n \t<li>Viti per il fissaggio delle rotaie.<\/li>\n \t<li>Zigrinature.<\/li>\n<\/ul>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhich ones are the most used thread rolling methods?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<li><a href=\"https:\/\/www.evirtitalia.com\/en\/thread-rolling\/#infeed-rolling\" target=\"_blank\" rel=\"noopener\">In-feed<\/a>.<\/li>\n<li><a href=\"https:\/\/www.evirtitalia.com\/en\/thread-rolling\/#through-feed\" target=\"_blank\" rel=\"noopener\">Through - feed<\/a>.<\/li>\n<li><a href=\"https:\/\/www.evirtitalia.com\/en\/thread-rolling\/#through-feed-rolling\" target=\"_blank\" rel=\"noopener\">Rullatura in passata<\/a> \u2013 Corrected Angle through feed.<\/li>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhat is the difference between thread rolling machine and thread cutting?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<ol><li>The rolled thread is 30-40% more durable.<\/li><li>The rolled thread surface is much stronger and smoother reducing as well the surface friction. <a href=\"https:\/\/www.evirtitalia.com\/wp-content\/uploads\/2022\/01\/FAQ-Figura2.jpg\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-12788\" src=\"https:\/\/www.evirtitalia.com\/wp-content\/uploads\/2022\/01\/FAQ-Figura2-600x338.jpg\" alt=\"\" width=\"600\" height=\"338\" srcset=\"https:\/\/www.evirtitalia.com\/wp-content\/uploads\/2022\/01\/FAQ-Figura2-600x338.jpg 600w, https:\/\/www.evirtitalia.com\/wp-content\/uploads\/2022\/01\/FAQ-Figura2-768x432.jpg 768w, https:\/\/www.evirtitalia.com\/wp-content\/uploads\/2022\/01\/FAQ-Figura2-1536x864.jpg 1536w, https:\/\/www.evirtitalia.com\/wp-content\/uploads\/2022\/01\/FAQ-Figura2-100x56.jpg 100w, https:\/\/www.evirtitalia.com\/wp-content\/uploads\/2022\/01\/FAQ-Figura2.jpg 1600w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><br \/>Thread rolling inherently imparts smooth and burnished threads without the need for secondary polishing processes. The high compressive forces that deform the metal remove any unevenness on the surface of the thread. Rolled surfaces have a surface roughness of approximately 8 to 24 microinches Ra while cut threads typically have 64 to 125 microinches Ra.<\/li><li>Rolling process is more suitable for threading materials that do not respond to heat treatment.<\/li><li>The thread rolling dimensional accuracy is higher, indeed the dies used in thread rolling are mirror images of the threads to be generated and there is no material being removed from the stock, the process can produce parts with high precision and accuracy over long runs.<\/li><li>The threading time is shorter compared to the machining method.<\/li><li>The thread rolling process have a lower cost brought by the efficient use of material. This also leads to better energy utilization since there is no need to collect and recycle wasted materials.<\/li><li>More delicate and compatible thread\u00a0structure is obtained by thread rolling.<\/li><li>In major sectors like goods, automotive, aerospace, construction, etc...) the thread formed by thread rolling method is preferred.<\/li><\/ol>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhich information are required to determine the capacity of the thread rolling machine?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<p>9. Disegno tecnico del componente da produrre.<\/p><p>10. Flusso del processo produttivo.<\/p><p>11. Durezza del materiale.<\/p>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tAre thread rolling dies supplied together with the thread rolling machine?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<p>With the aim to provide a complete key-hand solution, EVIRT ITALIA is standardly providing the tools together with machines.<\/p>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhat is in-feed process?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<p>When the thread\u00a0length is shorter than the die length, the type of rolling\u00a0process is defined as\u00a0infeed\u00a0process.<\/p><p>During the infeed Thread Rolling process the workpiece is formed by a simple rotation\u00a0while the workpiece is not moving backward or forward.<\/p><p>The in-feed rolling method is mandatory for those pieces which have a step in the front or behind the threaded section.<\/p>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhat is the meaning of Stud Bolt?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<p>Stud bolt is a type of fasteners which present different lengths and fully threaded solid bars.<\/p><p>The Stud bolts were previously produced with standard thru-feed dies, while nowadays they can be produced faster and more precisely using the speed controlled thru feed dies thanks to the EVIRT ITALIA Smart Rolling Machines inclining heads.<\/p><p>Stud bolts are commonly used in construction, furniture and white goods industries.<\/p>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\t EVIRT Mono &amp; PlanWhat means 2 Die Cylindrical Thread Rolling Machinear Series?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<p>The two dies\u00a0cylindrical\u00a0machines\u00a0transmit the rolling force to material using two dies.<\/p><p>The two dies cylindrical thread rolling machines can produce a large variety of parts like splines, tie rods, etc. with the\u00a0support of necessary equipment.<\/p>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhat means 3 die Cylindrical Rolling Machine - EVIRT Radial Series?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<p>The three dies cylindrical Smart Rolling machines\u00a0are the thread rolling machines whose pressure is conducted to the workpiece by three rolling dies.<\/p><p>The three dies cylindrical thread rolling machines can process hollow components or pipe similar shaped components.<\/p><p>What\u2019s more, these series of machines are commonly used to roll different profiles on adjustment props as well as in scaffolding industries.<\/p>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhat is the Thread Rolling Machine?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<p>The Thread Rolling Machine is a machine that can cold form circular cross sectioned materials like threads, knurls, splines, tie rods can be formed.<\/p><p>These machines performs faster and better products than cutting machining.<\/p><p>By rolling\u00a0the material, the molecular structure of the material is oriented, causing a durable product with increased quality.<\/p>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhat is the Thread Rolling Die?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<p>The thread rolling dies are as the tools used on the thread rolling machines.<\/p><p>Thread rolling dies material type is chosen according to workpiece material.<\/p>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhat is the life of Thread Rolling Die?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\tEsistono utensili di rullatura in grado di rullare diecimila pezzi cos\u00ec come esistono utensili che possono processare fino a centinaia di migliaia di operazioni di rullatura.\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhat is the meaning of Speed control thru-feed dies?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<p>Speed controlled thru-feed dies are used for threads longer than die length using inclined spindles.<\/p><p>These kinds of dies are also able to perform faster process than rolling through-feed dies.<\/p><p>Another difference compared with through-feed dies is the absence of connection between dies shape and thread shape.<\/p><p>Watching at the profile, the main difference is the fact that dies present grooves on thread cross section instead of helical thread.<\/p><p>Using ring dies make available faster thread rolling production.<\/p>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhat is the meaning of Ball Joint?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<p>All vehicles steering and front alignment systems requires mobile cardan parts which are called Ball joint (ball pin).<\/p><p>It exists an enormous kind of types, shapes and sizes related with vehicle brand and vehicle's system.<\/p><p>These parts are forged with multiple station cold forging machines, then machined with lathes and finally the ball side of part is burnished and straightened by rolling machines.<\/p><p>In last decades EVIRT ITALIA developed special purpose machines for burnishing and rolling operation on ball joints in order to maximize their operation efficiency.<\/p>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhat is the difference between Single ended or Double ended studs?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<p>The single ended studs are threaded on one single side while the double ended studs are rolled on both sides of the bolts.<\/p><p>EVIRT ITALIA innovative double station thread rolling machines made the double studs rolling process simple and intuitive like never before.<\/p>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhat is the meaning of cold forming processes?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<p>Cold forming processes are shape deformation processes which exceed the plastic limits of material deformation by using a certain amount of rolling force.<\/p><p>The structure of the material obtained as a result of cold forming, unlike the state before the rolling process, is in the direction of the thread rolling force application.<\/p><p>This oriented structure is then much more durable and harder than its original state.<\/p><p>As a consequence of this process, as much as the cold forming force increases, the depth and stiffness of the resistant structure increases at the same rate.<\/p>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhat is the meaning of Spline Rolling Process?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<p>Spline Rolling Process is a kind of fastener process which needs both high torque and high rolling force.<\/p><p>The splines can be\u00a0produces\u00a0by EVIRT ITALIA Smart Rolling Machines which are able to thread up 1.95 module with reference\u00a0DIN 5480 standard.<\/p>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhat is the definition of Tie Rod?\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<p>Tie Rod is a material which has a special profile.<\/p><p>It\u2019s normally produced to be used in the construction sector, in mold binding as well as in anchoring operations.<\/p><p>Tie Rod can be produced using EVIRT ITALIA Smart Rolling Machines.<\/p><p>Tie Rod is mostly produced with the following diameters: \u00d8 17, \u00d8 22, \u00d8 24, \u00d8 27 and \u00d8 32 mm.<\/p>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhich ones are Common Defects of Thread Rolling Processes:\t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<p>Though the thread rolling process offers higher precision than others, upsets and irregularities in the operation will inevitably create defects.<\/p><p>Most of the defects arise from the out-of-tolerance stock dimensions, worn-out or misaligned rollers, and improper stock feeding.<\/p><p>Below are the most common defects seen in thread rolling.<\/p><ul><li><strong>Truncated Thread Crest:<\/strong><\/li><\/ul><p>This defect is described by a non-fully formed crest or an excessively truncated crest.<\/p><p>One reason could be an undersized stock where there is insufficient material to flow and create the crests.<\/p><p>This is fixed by gradually increasing the size of the stock. If the pitch diameter is oversized, then the more probable root cause is a loose threading head which is solved by sizing-in.<\/p><p>If not, then the defect is possibly caused by too much hardness of the material.<\/p><p>Thus, it is then necessary to change into a softer material.<\/p><ul><li><strong>Flaking:<\/strong><\/li><\/ul><p>Flaking or slivers causes unusual roughness on the surface of the threads.<\/p><p>This is usually caused by the incompatibility of the material for rolling.<\/p><p>The root causes can be excessive lead and sulfur content, inconsistent grain structure, and sometimes cold working before rolling.<\/p><p>If the material being used already has a good rollability, then other possible causes can be mismatched rollers or dies, rough roller surface, overfilling, or slow rolling speeds.<\/p><ul><li><strong>Drunken Threads:<\/strong><\/li><\/ul><p>This defect is seen as wavy or uneven thread crests.<\/p><p>This is a result of mismatched dies, misaligned feeding of the stock, or poor die construction.<\/p><p>The best solution is to check the condition of the rolls and their bushings.<\/p><ul><li><strong>Curved Pitch Line:<\/strong><\/li><\/ul><p>This is viewed as the tapering of the threads towards the ends of the threaded segments of the bolt or screw.<\/p><p>The curvature can be concave or convex.<\/p><p>Its root causes are inconsistent stock diameter, misaligned stock relative to the roller, wearing of rollers, or too much deformation of the material causing it to flow towards the end of the stock.<\/p><p><img decoding=\"async\" class=\"alignnone wp-image-12785 size-medium\" src=\"https:\/\/www.evirtitalia.com\/wp-content\/uploads\/2022\/01\/FAQ-Figura4-600x338.jpg\" alt=\"\" width=\"600\" height=\"338\" \/><\/p><ul><li><strong>Out-of-tolerance Helix Angle:<\/strong><\/li><\/ul><p>This can be a result of a variety of causes such as unsynchronized rollers, imperfect rollers, incorrect feeding of the stock, or screw jacking.<\/p><p>This can be solved by correctly timing and aligning the rollers, proper stock feeding, and optimizing the rolling speed.<\/p><ul><li><strong>Poor Finish:<\/strong><\/li><\/ul><p>Poor finish is a result of factors such as worn-out dies, high material hardness, oversized stock diameter, or presence of contaminants in the coolant supply.<\/p><ul><li><strong>Cupped End:<\/strong><\/li><\/ul><p>A cupped end appears as a concave-end caused by forcing the metal to flow over an insufficient chamfer.<\/p><p>This is more evident on softer metals.<\/p><p>The defect is solved by properly chamfering the stock, usually about 30\u00b0.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-12785 size-medium\" src=\"https:\/\/www.evirtitalia.com\/wp-content\/uploads\/2022\/01\/FAQ-Figura5-600x338.jpg\" alt=\"\" width=\"600\" height=\"338\" \/><\/p>\t<\/div>\n<\/div>\n<h6 class=\"clearfix qodef-title-holder\" >\n\t<span class=\"qodef-accordion-mark qodef-left-mark\">\n\t\t<span class=\"qodef-accordion-mark-icon\">\n\t\t\t<span class=\"icon_plus\"><\/span>\n\t\t\t<span class=\"icon_minus-06\"><\/span>\n\t\t<\/span>\n\t<\/span>\n\t<span class=\"qodef-tab-title\">\n\t\t<span class=\"qodef-tab-title-inner\">\n\t\t\tWhich ones are the most famous thread Rolling Machines? \t\t<\/span>\n\t<\/span>\n<\/h6>\n<div class=\"qodef-accordion-content\">\n\t<div class=\"qodef-accordion-content-inner\">\n\t\t<p>Thread rolling process summary is true to any type of thread rolling.<\/p><p>There are different types of thread rolling machines that vary according to the type of die used.<\/p><p>Thread rolling machines can be a flat-die, planetary, or cylindrical-die type.<\/p><ul><li><strong>Flat-die Type:<\/strong><\/li><\/ul><p>\u2022 this type of thread rolling machine consists of two rectangular dies where one is stationary while the other is reciprocating.<\/p><p>The reciprocating die moves parallel to the stationary die.<\/p><p>The surface of the dies contains ridges representing the profile of the thread to be produced.<\/p><p>These ridges are inclined at an angle equal to the helix angle of the thread.<\/p><p>The distance between the crests of the dies is equal to the minor diameter of the thread.<\/p><p>The threads are formed typically in one passage only.<\/p><p>The length of the die allows the stock to be rolled around six to eight times.<\/p><p>The stock is inserted on one end, either manually or automatically.<\/p><p>The dies roll the stock tangentially which carries it up to the opposite end by friction.<\/p><ul><li><strong>Segment or Planetary Type:<\/strong><\/li><\/ul><p>A planetary type operates by rolling the stock through one stationary and one moving surface.<\/p><p>However, this machine uses rotating motion instead of translation.<\/p><p>This type involves stationary curved dies and a central rotating die.<\/p><p>One or more stationary dies can be matched with a single rotating die. A stationary die rolls one stock at a time.<\/p><p>Similar to the flat-die type, the planetary machine has a finite rolling surface that forms the thread through one passage.<\/p><p>The stock is inserted on one end of the curved die.<\/p><p>The rotating die then rotates a full arc of the curved die revolving the stock until ejected on the opposite end.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-12785 size-medium\" src=\"https:\/\/www.evirtitalia.com\/wp-content\/uploads\/2022\/01\/FAQ-figura7-600x338.jpg\" alt=\"\" width=\"600\" height=\"338\" \/><\/p><ul><li><strong>Cylindrical-die Type:<\/strong><\/li><\/ul><p>Cylindrical dies or rollers are regarded as dies with infinite work surfaces.<\/p><p>These machines, for which EVIRT ITALIA is the most trustable brand in the world, are usually operate through the combination of radial and through feeding.<\/p><p>Unlike the flat-die and planetary types, the cylindrical-die type deforms the metal through multiple passes as it rolls.<\/p><p>Cylindrical-die type machines can be further divided into two major categories: two-die (Planar series) and three-die machines (Radial series).<\/p><ul><li><strong>Two-die (serie Planar):<\/strong><\/li><\/ul><p>This type of threading machine has two parallel rollers wherein one or both can move radially to accept and penetrate the stock.<\/p><p>The stock is positioned with a slight offset from the plane of the centerline of the dies to prevent it from rising out.<\/p><p>A smooth roller support or rest bar is located in the middle to hold the stock as it is being threaded.<\/p><ul><li><strong>Three-die (serie Radia):<\/strong><\/li><\/ul><p>This machine has three rollers positioned 120\u00b0 from each other.<\/p><p>Typically, all rollers can move radially wherein the position of the stock is maintained at the center during penetration.<\/p><p>Compared with two-die machines, three-die types have better force balance but are more difficult and complex to adjust.<\/p>\t<\/div>\n<\/div>\n        <\/div>\n\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\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>What is forming process? Forming process is a cold forming operation standardly generated by hydraulic, mechanical and\/or electromechanical forces. What is&#8230;<\/p>\n","protected":false},"author":1,"featured_media":13122,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_joinchat":[],"footnotes":""},"class_list":["post-12987","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.0 (Yoast SEO v28.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>FAQ - Evirt Italia<\/title>\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.evirtitalia.com\/en\/faq\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"FAQ\" \/>\n<meta property=\"og:description\" content=\"What is forming process? 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