{"id":2777,"date":"2026-04-23T18:59:30","date_gmt":"2026-04-23T15:59:30","guid":{"rendered":"https:\/\/usarolls.eu\/produse\/cilindri-caliti-cu-flacara-din-otel-4140\/"},"modified":"2026-06-22T14:24:31","modified_gmt":"2026-06-22T11:24:31","slug":"role-4140-calite-cu-flacara","status":"publish","type":"page","link":"https:\/\/usarolls.eu\/ro\/produse\/role-4140-calite-cu-flacara\/","title":{"rendered":"Cilindri C\u0103li\u021bi cu Flac\u0103r\u0103 din O\u021bel 4140"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"2777\" class=\"elementor elementor-2777 elementor-695\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1863a5e e-flex e-con-boxed e-con e-parent\" data-id=\"1863a5e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-397b3cc elementor-widget elementor-widget-heading\" data-id=\"397b3cc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Rezisten\u021b\u0103 ridicat\u0103 \u0219i rezisten\u021b\u0103 la uzur\u0103 pentru procese solicitante.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b5a3915 e-flex e-con-boxed e-con e-parent\" data-id=\"b5a3915\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5395e09 elementor-widget elementor-widget-text-editor\" data-id=\"5395e09\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Pentru aplica\u021bii \u00een regim greu, unde suprafe\u021bele suport\u0103 \u00eenc\u0103rc\u0103ri repetate \u0219i abraziune, val\u021burile noastre din o\u021bel 4140 c\u0103lite prin flac\u0103r\u0103 ofer\u0103 o rezisten\u021b\u0103 \u0219i o durabilitate excep\u021bional\u0103. C\u0103lirea prin flac\u0103r\u0103 \u00eenc\u0103lze\u0219te suprafa\u021ba val\u021bului la aproximativ 870\u2013925 \u00b0C, apoi o r\u0103ce\u0219te brusc pentru a forma un strat martensitic cu o duritate de 50\u201360 HRC, p\u0103str\u00e2nd \u00een acela\u0219i timp un miez tenace. <\/p><h3>C\u00e2nd s\u0103 alege\u021bi acest cilindru<\/h3><ul><li>Atunci c\u00e2nd procesa\u021bi metale, h\u00e2rtie sau mase plastice care abrazeaz\u0103 suprafa\u021ba val\u021bului.<\/li><li>Atunci c\u00e2nd sarcinile ridicate de presare (nip) necesit\u0103 at\u00e2t duritate, c\u00e2t \u0219i tenacitate.<\/li><li>Atunci c\u00e2nd opera\u021biunile implic\u0103 temperaturi ridicate, dar coroziunea nu este principala preocupare.<\/li><li>Atunci c\u00e2nd val\u021bul trebuie s\u0103 \u00ee\u0219i men\u021bin\u0103 stabilitatea dimensional\u0103 sub stres repetat.<\/li><li>Atunci c\u00e2nd c\u0103uta\u021bi o alternativ\u0103 rentabil\u0103 la o\u021belul de scule sau la cromare.<\/li><\/ul><h3>Cum func\u021bioneaz\u0103<\/h3><p>Val\u021burile noastre 4140 sunt prelucrate la dimensiunile finale, apoi suprafa\u021ba este c\u0103lit\u0103 prin flac\u0103r\u0103 prin \u00eenc\u0103lzire cu flac\u0103r\u0103 oxi-gaz \u0219i r\u0103cire imediat\u0103 \u00een ap\u0103 sau polimer. Acest proces transform\u0103 suprafa\u021ba \u00eentr-o structur\u0103 martensitic\u0103 cu duritate ridicat\u0103, \u00een timp ce interiorul r\u0103m\u00e2ne ductil. Ad\u00e2ncimea stratului c\u0103lit variaz\u0103 de obicei \u00eentre 1\u20135 mm. Dup\u0103 c\u0103lire, rectific\u0103m sau lustruim suprafa\u021ba la toleran\u021ba \u0219i rugozitatea solicitate.   <\/p><h3>Unde este rentabil \/ Aplica\u021bii<\/h3><p>Val\u021buri pentru formarea metalelor, procesarea h\u00e2rtiei, extrudarea plasticului, produse din lemn, linii de acoperire a rulourilor de o\u021bel \u0219i orice proces care necesit\u0103 o suprafa\u021b\u0103 de val\u021b tenace \u0219i rezistent\u0103 la uzur\u0103.<\/p><h3>Specifica\u021bii \/ Capacit\u0103\u021bi<\/h3><p>Diametru: 940 mm x 8000 mm lungime total\u0103. Greutate: 5000 kg.<\/p><p>Duritatea suprafe\u021bei: 50\u201355 HRC.<\/p><p>Ad\u00e2ncimea stratului c\u0103lit: 1\u20135 mm tipic.<\/p><p>Material: o\u021bel aliat AISI 4140.<\/p><p>Finisaj: rectificat sau lustruit; acoperiri suplimentare disponibile.<\/p><h3>Conformitate \u0219i op\u021biuni<\/h3><p>Pot fi produse conform PED 2014\/68\/UE atunci c\u00e2nd sunt utilizate ca val\u021buri de \u00eenc\u0103lzire sau r\u0103cire. Op\u021bional, cromare sau acoperiri prin pulverizare termic\u0103 pentru rezisten\u021b\u0103 la coroziune. Fusurile pot fi prelucrate pentru a se potrivi cu rulmen\u021bii existen\u021bi.  <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-09a9fb5 e-flex e-con-boxed e-con e-parent\" data-id=\"09a9fb5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-35737d6 elementor-widget elementor-widget-heading\" data-id=\"35737d6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Produse \u00eenrudite<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-21cb262 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"21cb262\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/usarolls.eu\/ro\/produse\/cilindri-cu-carcasa-dubla-si-deflectoare-spiralate\/\">\n\n\t\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<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-right\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M285.476 272.971L91.132 467.314c-9.373 9.373-24.569 9.373-33.941 0l-22.667-22.667c-9.357-9.357-9.375-24.522-.04-33.901L188.505 256 34.484 101.255c-9.335-9.379-9.317-24.544.04-33.901l22.667-22.667c9.373-9.373 24.569-9.373 33.941 0L285.475 239.03c9.373 9.372 9.373 24.568.001 33.941z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Role cu manta dubl\u0103 \u0219i \u0219icane spirale \u2013 pentru r\u0103cire \u0219i \u00eenc\u0103lzire general\u0103 unde nu este necesar\u0103 o uniformitate de \u00b10,5 \u00b0C.<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/usarolls.eu\/ro\/produse\/role-de-calandrare\/\">\n\n\t\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<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-right\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M285.476 272.971L91.132 467.314c-9.373 9.373-24.569 9.373-33.941 0l-22.667-22.667c-9.357-9.357-9.375-24.522-.04-33.901L188.505 256 34.484 101.255c-9.335-9.379-9.317-24.544.04-33.901l22.667-22.667c9.373-9.373 24.569-9.373 33.941 0L285.475 239.03c9.373 9.372 9.373 24.568.001 33.941z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Role de calandrare \u2013 pentru calandrare de precizie cu suprafe\u021be mai moi.<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/usarolls.eu\/ro\/produse\/miezuri-pentru-cilindri-de-cauciuc\/\">\n\n\t\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<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-right\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M285.476 272.971L91.132 467.314c-9.373 9.373-24.569 9.373-33.941 0l-22.667-22.667c-9.357-9.357-9.375-24.522-.04-33.901L188.505 256 34.484 101.255c-9.335-9.379-9.317-24.544.04-33.901l22.667-22.667c9.373-9.373 24.569-9.373 33.941 0L285.475 239.03c9.373 9.372 9.373 24.568.001 33.941z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Corpuri metalice pentru role de cauciuc \u2013 pentru aplicarea \u00eenveli\u0219urilor de cauciuc pe miezuri c\u0103lite.<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-daea247 e-flex e-con-boxed e-con e-parent\" data-id=\"daea247\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c1f6ad2 elementor-widget elementor-widget-text-editor\" data-id=\"c1f6ad2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/usarolls.com\/\" target=\"_blank\" rel=\"noopener\">Pentru \u00eentreb\u0103ri din S.U.A., asisten\u021b\u0103 pentru produse \u0219i informa\u021bii de contact locale, v\u0103 rug\u0103m s\u0103 vizita\u021bi <span style=\"color: #003366;\">site-ul nostru american.<\/span><\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Rolele 4140 c\u0103lite prin flac\u0103r\u0103 sunt val\u021buri de transfer termic, cunoscute \u0219i sub denumirea de cilindri calandru sau cilindri de r\u0103cire, fabricate din o\u021bel aliat 4140 \u0219i c\u0103lite prin flac\u0103r\u0103 pentru a atinge o duritate cuprins\u0103 \u00eentre 50 \u0219i 55 Rc.<\/p>\n","protected":false},"author":1,"featured_media":2776,"parent":2707,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"page-tag":[8],"class_list":["post-2777","page","type-page","status-publish","has-post-thumbnail","hentry","page-tag-product"],"acf":[],"_links":{"self":[{"href":"https:\/\/usarolls.eu\/ro\/wp-json\/wp\/v2\/pages\/2777","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/usarolls.eu\/ro\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/usarolls.eu\/ro\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/usarolls.eu\/ro\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/usarolls.eu\/ro\/wp-json\/wp\/v2\/comments?post=2777"}],"version-history":[{"count":9,"href":"https:\/\/usarolls.eu\/ro\/wp-json\/wp\/v2\/pages\/2777\/revisions"}],"predecessor-version":[{"id":4043,"href":"https:\/\/usarolls.eu\/ro\/wp-json\/wp\/v2\/pages\/2777\/revisions\/4043"}],"up":[{"embeddable":true,"href":"https:\/\/usarolls.eu\/ro\/wp-json\/wp\/v2\/pages\/2707"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/usarolls.eu\/ro\/wp-json\/wp\/v2\/media\/2776"}],"wp:attachment":[{"href":"https:\/\/usarolls.eu\/ro\/wp-json\/wp\/v2\/media?parent=2777"}],"wp:term":[{"taxonomy":"page-tag","embeddable":true,"href":"https:\/\/usarolls.eu\/ro\/wp-json\/wp\/v2\/page-tag?post=2777"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}