{"id":986,"date":"2022-01-12T08:10:55","date_gmt":"2022-01-12T07:10:55","guid":{"rendered":"https:\/\/www.sertompb.com\/en\/?p=986"},"modified":"2022-01-12T15:29:36","modified_gmt":"2022-01-12T14:29:36","slug":"the-production-process-of-plate-rolling-machines-rolls","status":"publish","type":"post","link":"https:\/\/www.sertompb.com\/en\/news-about-sheet-metal-working\/the-production-process-of-plate-rolling-machines-rolls\/","title":{"rendered":"THE PRODUCTION PROCESS OF PLATE ROLLING MACHINES ROLLS"},"content":{"rendered":"<p><strong>The rolls in\u00a0<a title=\"Plate bending machines production\" href=\"https:\/\/www.sertompb.com\/en\/plate-bending-machines-production\/\">hydraulic plate rolling machines<\/a><\/strong>\u00a0are very important components and a lot of attention must be paid\u00a0<strong>in the design and production phase.<\/strong><\/p>\n<p>In fact<strong>, they are the most expensive part of the hydraulic plate roll<\/strong>, and it takes a very long time to be replaced<strong>, causing important production stops<\/strong>\u00a0(for larger rollers they could even take up to a few months). Many manufacturers of hydraulic plate rolls (especially the smaller ones) use rolls obtained from drawn round steel bars, to save on the cost of the roll.<\/p>\n<p>However,\u00a0<strong>laminated round steel products<\/strong>\u00a0<strong>have much problems<\/strong>:<\/p>\n<ul>\n<li>There are often\u00a0<strong>porosities in the steel<\/strong>, which can lead to the initiation of fatigue cracks, with consequent cracking of the roller.<\/li>\n<li>The crystalline grains do not have a precise orientation, and therefore\u00a0<strong>have less resistance capacity.<\/strong><\/li>\n<li>Lower compactness of the roller which translates into<strong>\u00a0lower toughness and lower impact and compression resistance<\/strong><\/li>\n<\/ul>\n<p>WHY CHOOSE US FOR THE PRODUCTION OF ROLLS FOR HYDRAULIC PLATE ROLLER MACHINE<\/p>\n<p>This is why\u00a0<strong>Sertom manufactures rollers for plate rolling machines only from forged pieces<\/strong>, with a high reduction ratio of the starting ingot.<\/p>\n<p>The most used material for our rollers is 42 CrMo4, but\u00a0<strong>the material is chosen according to the customer&#8217;s needs.\u00a0<\/strong>In fact, high-strength steels are often used, such as 40 NiCrMoV 16KU and 65 MnCrMo4 for hot plate rolling.<\/p>\n<p>After forging, the piece is roughed on the lathe and subsequently the quenching treatment (hardening and tempering) and finishing on the lathe. Hardening is a very drastic process and for large pieces it can lead to internal tensions, both thermal and structural. Therefore, the tempering phase after hardening is a fundamental phase for the correct production process of the roller, because it ensures a good compromise between hardness and toughness.<\/p>\n<p>The quenching heat treatment is carried out after the roughing of the roller, to allow the hardened layer to go deeper.<\/p>\n<p><strong>This process guarantees excellent performance of the hydraulic plate rolls for its entire useful life.<\/strong><\/p>\n<p>For more information or to request a quote, please do not hesitate to\u00a0<a href=\"https:\/\/www.sertompb.com\/en\/custom-made-plate-bending-machines-quotation\/\" title=\"Custom made plate bending machines quotation\">contact us.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The rolls in\u00a0hydraulic plate rolling machines\u00a0are very important components and a lot of attention must be paid\u00a0in the design and production phase. In fact, they are the most expensive part of the hydraulic plate roll, and it takes a very long time to be replaced, causing important production stops\u00a0(for larger rollers they could even take &hellip; <a href=\"https:\/\/www.sertompb.com\/en\/news-about-sheet-metal-working\/the-production-process-of-plate-rolling-machines-rolls\/\">Continued<\/a><\/p>\n","protected":false},"author":2,"featured_media":989,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-986","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The production process of plate rolling machines rolls | Sertom PB<\/title>\n<meta name=\"description\" content=\"The rolls in\u00a0hydraulic 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