{"id":24924,"date":"2019-05-06T16:26:17","date_gmt":"2019-05-06T14:26:17","guid":{"rendered":"http:\/\/136.144.181.85\/~nedzink\/caracteristicile-titan-zincului\/procesul-de-patinare-condensare\/"},"modified":"2019-08-05T15:49:10","modified_gmt":"2019-08-05T13:49:10","slug":"procesul-de-patinare-condensare","status":"publish","type":"page","link":"https:\/\/www.nedzink.com\/ro\/caracteristicile-titan-zincului\/procesul-de-patinare-condensare\/","title":{"rendered":"Procesul de Patinare\/Condensare"},"content":{"rendered":"<h2 class=\"western\">NedZink Natural (zinc natural)<\/h2>\n<p>NedZink NATURAL este un material estetic \u015fi durabil care dezvolt\u0103 de-a lungul timpului un farmec aparte printr-o patinare progresiv\u0103 a suprafe\u021bei pe &icirc;nvelitori \u015fi plac\u0103ri de fa\u0163ad\u0103. Stratul de patin\u0103 provine din formarea pe zinc a unei baze de carbonat de zinc ce formeaz\u0103 un strat de oxid care ac\u0163ioneaz\u0103 ca o protec\u0163ie natural\u0103 a materialului. Acest proces apare sub influen\u0163a condi\u0163iilor meteorologice. Este un proces natural, astfel c\u0103 nuan\u0163a uniform\u0103 de gri este ob\u0163inut\u0103 dup\u0103 un an p&acirc;n\u0103 la patru ani.<\/p>\n<p>Zn + O<sub>2<\/sub>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ZnO + H<sub>2<\/sub>O&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Zn(OH)<sub>2<\/sub> + CO<sub>2<\/sub>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;ZnCO<sub>3<\/sub><\/p>\n<p>zinc&nbsp; +&nbsp; oxygen &nbsp; =&gt;&nbsp;&nbsp; oxid de zinc&nbsp; +&nbsp; ap\u0103&nbsp;&nbsp; =&gt;&nbsp; hidroxide de zinc +&nbsp; dioxid de carbon&nbsp; =&gt;&nbsp; carbonat de zinc<\/p>\n<p>Compozi\u0163ia exact\u0103 a patinei depinde par\u0163ial de mediul &icirc;n care stratul de patin\u0103 se formeaz\u0103. &Icirc;n condi\u0163ii atmosferice normale, ne confrunt\u0103m cu un num\u0103r suplimentar de factori ca:<\/p>\n<p>&#8211; precipita\u0163ii: ploaie, z\u0103pad\u0103, grindin\u0103, cea\u0163\u0103, condens<br \/>\n&#8211;&nbsp;poluarea aerului:<br \/>\n&bull; o mare varietate de emisii de substan\u021be chimice cauzate de industrie, trafic, etc.<br \/>\n&bull; sarea de mare &icirc;n zonele de coast\u0103<br \/>\n&bull; nisip \u015fi praf purtate de v&acirc;nturi puternice<\/p>\n<p>To\u0163i ace\u015fti factori, &icirc;n func\u021bie de loca\u0163ia geografic\u0103, sunt prezen\u0163i &icirc;n diverse varia\u0163ii &icirc;n atmosfera noastr\u0103 \u015fi combinate &icirc;ntre ele, au mai mult\u0103 sau mai pu\u0163in\u0103 influen\u0163\u0103 asupra gradului de coroziune sau uzur\u0103. Sub\u021bierea &icirc;n grosimea materialului este dependent\u0103 de mediul &icirc;nconjur\u0103tor \u0219i difer\u0103 de exemplu &icirc;n zonele rurale fa\u021b\u0103 de cele urbane, de coast\u0103 sau industriale.<\/p>\n<h3 class=\"western\">Zona de coast\u0103<\/h3>\n<p>C&acirc;nd zincul este utilizat &icirc;n zone de coast\u0103, suprafa\u0163a este expus\u0103 aerului s\u0103rat. C&acirc;nd este folosit zincul lucios, natural, la rol\u0103, stratul de patin\u0103 se va forma, &icirc;n condi\u0163ii normale, c&acirc;nd este ad\u0103ugat\u0103 o cantitate adecvat\u0103 de ap\u0103. Pentru p\u0103r\u0163ile care nu sunt udate imediat \u015fi astfel depind de umezeala din aer, procesul de patinare este mai lent. Acest lucru se vede prin decolorarea neregulat\u0103 a materialului \u015fi o perioad\u0103 mai mare a form\u0103rii patinei \u015fi a nuan\u0163ei de gri deschis. Combinarea aerului s\u0103rat cu lipsa apei de ploaie rezult\u0103 &icirc;ntr-o decolorare a suprafe\u0163ei. Aceste efecte vizuale sunt inevitabile \u015fi ireversibile.<\/p>\n<h2 class=\"western\">NedZink NOVA (zinc pre-patinat)<\/h2>\n<p>NedZink NOVA este un titan-zinc de la NedZink supus unui proces de patinare pentru a-i da un aspect complet natural. Suprafa\u0163a uniform\u0103 gri-mediu al NedZink NOVA este ob\u0163inut\u0103 prin aplicarea unor tratamente chimice ale suprafe\u0163ei dup\u0103 procesul de laminare. Nu sunt aplicate straturi de lac sau vopsea. Este astfel simulat\u0103 structura \u015fi compozi\u0163ia stratului de patin\u0103 ce apare &icirc;n mod natural sub influen\u0163a condi\u0163iilor atmosferice, iar propriet\u0103\u0163ile naturale ale titan-zincului sunt p\u0103strate &icirc;n &icirc;ntregime. Deoarece NedZink NOVA este folosit &icirc;n principal pentru aplica\u0163ii estetice de &icirc;nalt\u0103 calitate, de ex. fa\u0163ade, produsul este livrat cu un lac de protec\u0163ie temporar. Aceast\u0103 protec\u0163ie previne deterior\u0103rile minore \u015fi murd\u0103rirea &icirc;n timpul asambl\u0103rii, manipul\u0103rii \u015fi asigur\u0103 un aspect optim dup\u0103 aplicare. Aceast\u0103 protec\u0163ie previne micile deterior\u0103ri \u015fi murd\u0103rirea &icirc;n procesul de asamblare \u015fi asigur\u0103 un aspect optim dup\u0103 punerea &icirc;n oper\u0103.<\/p>\n<h3>Condensare&nbsp;\/ umezeal\u0103<\/h3>\n<p>Stratul de patin\u0103 poate fi afectat sau dizolvat de cauze diverse. O deteriorare posibil\u0103 a stratului de patin\u0103 poate fi cauzat\u0103 de rugina alb\u0103. Aceast\u0103 form\u0103 de coroziune apare de obicei pe intradosul tablei. Expunerea la umezeal\u0103 continu\u0103 duce la formarea hidroxidului de zinc (rugin\u0103 alb\u0103). Astfel de probleme sunt cauzate de expunerea continu\u0103 la umezeal\u0103 a intradosului tablei \u0219i de lipsa ventila\u021biei sub tabl\u0103.<\/p>\n<p>&Icirc;n condi\u0163ii standard de construire, diferen\u0163a de presiune a vaporilor (interni \u015fi externi) cauzeaz\u0103 deplasarea vaporilor prin structur\u0103, din interior c\u0103tre exterior. Ace\u015ftia condenseaz\u0103 pe spatele suprafe\u0163ei de zinc. O cre\u015ftere mare a presiunii vaporilor deterioreaz\u0103 zincul, &icirc;n special c&acirc;nd patina nu este prezent\u0103. &Icirc;n mod normal stratul de patin\u0103 se formeaz\u0103 c&acirc;nd aerul circul\u0103 prin spa\u0163iul de ventilare f\u0103r\u0103 obstacole majore. C&acirc;nd zincul este aplicat pe un acoperi\u015f cald se aplic\u0103 anumite cerin\u0163e &icirc;n ceea ce prive\u015fte condensul.<\/p>\n<p>NedZink NOVA Pro-Tec este un titan-zinc livrat cu un strat de protec\u0163ie pe intrados, fiind folosit pentru construc\u0163ii de acoperi\u015furi calde sau reci. Acest strat de protec\u0163ie const\u0103 &icirc;n aplicarea a dou\u0103 straturi de polimer care protejeaz\u0103 zincul &icirc;mpotriva efectelor d\u0103un\u0103toare ale vaporilor \u015fi a altor substan\u0163e. NedZink NOVA Pro-Tec poate fi utilizat &icirc;n cadrul sistemelor standard, dar se recomand\u0103 &icirc;n special la acoperi\u015furi calde, neventilate \u015fi plac\u0103ri de fa\u0163ade.<\/p>\n<h3 class=\"western\">Pl\u0103ci de fibrociment<\/h3>\n<p>Dac\u0103 zincul este folosit &icirc;n combina\u0163ie cu alte materiale, unele materiale pot cauza daune zincului. Se recomand\u0103 ca atunci c&acirc;nd se folosec pl\u0103ci de fibrociment peste zinc s\u0103 se contacteze produc\u0103torul acelor pl\u0103ci. C&acirc;nd se exclud efectele negative, durata de via\u0163\u0103 a zincului este garantat\u0103.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NedZink Natural (zinc natural) NedZink NATURAL este un material estetic \u015fi durabil care dezvolt\u0103 de-a lungul timpului un farmec aparte printr-o patinare progresiv\u0103 a suprafe\u021bei pe &icirc;nvelitori \u015fi plac\u0103ri de fa\u0163ad\u0103. Stratul de patin\u0103 provine din formarea pe zinc a unei baze de carbonat de zinc ce formeaz\u0103 un strat de oxid care ac\u0163ioneaz\u0103 ca [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"parent":24864,"menu_order":480,"comment_status":"closed","ping_status":"closed","template":"template-import.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-24924","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Procesul de Patinare\/Condensare \u2013 NedZink<\/title>\n<meta name=\"description\" content=\"Titaanzink dankt zijn uitstekende corrosiebestendigheid aan de spontane vorming van een onoplosbare laag op het oppervlak. 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