{"id":764,"date":"2015-05-08T06:23:32","date_gmt":"2015-05-08T06:23:32","guid":{"rendered":"http:\/\/www.h-metal.ro\/blog\/?p=764"},"modified":"2023-04-22T14:23:43","modified_gmt":"2023-04-22T14:23:43","slug":"grunduirea-suprafetei-metalului","status":"publish","type":"post","link":"https:\/\/www.h-metal.ro\/blog\/ro\/grunduirea-suprafetei-metalului\/","title":{"rendered":"Grunduirea suprafetelor metalice"},"content":{"rendered":"<p><strong>Grunduirea\u00a0<\/strong>este operatia prin care se aplica suprafetei metalului prima pelicula de material, ce constituie baza acoperirilor ulterioare.<\/p>\n<p>Pelicula de grund are rolul de a realiza o buna legatura intre suprafata metalului si pelicula urmatoare care se suprapune peste cea de grund. Acesta pelicula de grund poate indeplini mai multe functii:\u00a0de izolare a metalului fata de mediu (prin liant), de colorare (prin pigment) si de <strong>protejare anticorosiva<\/strong>.<\/p>\n<p>Procesul de grunduire poate fi aplicat atat pe suprafetele metalice din aliaje din font\u0103, otel sau <a title=\"inox\" href=\"http:\/\/www.metal-online.ro\/inox&amp;103\" target=\"_blank\" rel=\"noopener\">inox<\/a>, cat si pe suprafetele metalice neferoase (aliaje ale Cu, Al, Zn etc.)<\/p>\n<p>Frecvent apare urmatoarea intrebare: &#8222;De ce este necesara grunduirea suprafetelor metalice, nu este suficienta vopsirea?&#8221;<\/p>\n<p>Raspunsul la aceasta intrebare este dat de <strong>avantajele pe care le prezinta grundul<\/strong>:<\/p>\n<p>&#8211; protejeaza metalul de rugina;<\/p>\n<p>&#8211; ajuta straturile decorative (email sau vopsea lucioasa) sa se prinda mai bine;<\/p>\n<p>&#8211; evita exfolierea si fisurarea peliculei de email\/vopsea;<\/p>\n<p>&#8211; ofera peliculei de vopsea un aspect uniform, neted.<\/p>\n<h2>Grunduirea suprafetei metalului &#8211; Metode de aplicare a stratului de grund:<\/h2>\n<p>&#8211; cu pensula;<\/p>\n<p>&#8211; prin pulverizare;<\/p>\n<p>&#8211; prin imersie.<\/p>\n<p>Fiecare metoda poate da rezultate bune daca este aplicata corect.\u00a0Imersia este metoda cea mai eficienta si economica, obtinandu-se o calitate superioara a suprafetei.<\/p>\n<p>Stratul de grund poate fi utilizat atat\u00a0pentru protectia suprafetelor metalice noi, cat si pentru intretinerea suprafetelor care au mai fost vopsite, astfel:<\/p>\n<p>&#8211; in cazul in care suprafata metalica este noua:<b>\u00a0<\/b>se indeparteaza oxizii metalici, se degreseaza suprafata, dupa care se aplica un strat sau doua de grund respectand timpii de uscare dintre satraturi recomandati de producator<\/p>\n<p>&#8211; pentru suprafetele metalice care au mai fost vopsite:\u00a0se indeparteaza vopseaua veche care nu mai are aderenta: mecanic sau chimic, dupa care se urmeaza aceeasi pasi ca mai sus<\/p>\n<p>Grundul este ales in functie de metalul care trebuie acoperit si dupa natura vopselei. De asemenea, a lacului ce se aplica peste stratul de grund.<\/p>\n<h3>Tipuri de grunduri:<\/h3>\n<p>&#8211; grund epoxidic bogat in Zinc care se preteaza la suprafetele zincate;<\/p>\n<p>&#8211; grund care se preteaza pe suprafetele ruginite si este si sudabil;<\/p>\n<p>&#8211; grunduri cu uscare rapida rosu, gri si negru \u2013 este un grund anticoroziv pe baza de rasina sintetica.<\/p>\n<p>Este ideal pentru protectia anticotoziva a suprafetelor metalice, a pieselor metalice, structuri.<\/p>\n<p>De cele mai multe multe ori, grundurile protejeaza suprafata metalica impotriva coroziunii, dar ajuta si la nivelarea suprafetei si la imbunatatirea vopselei finale.<\/p>\n<p>Articole similare:<\/p>\n<p><a title=\"zincare\" href=\"http:\/\/www.h-metal.ro\/blog\/zincare-termica-vs-electro-galvanizare\/\" target=\"_blank\" rel=\"noopener\">Zincare termica vs electro-galvanizare<\/a><\/p>\n<p><a title=\"tabla zincata\" href=\"http:\/\/www.h-metal.ro\/blog\/cum-depozitezi-tabla-zincata\/\" target=\"_blank\" rel=\"noopener\">Cum protejam tabla zincata<\/a><\/p>\n<p><a title=\"tabla zincata\" href=\"http:\/\/www.h-metal.ro\/blog\/cum-depozitezi-tabla-zincata\/\" target=\"_blank\" rel=\"noopener\">\u00a0<\/a><\/p>\n<div style=\"padding-bottom:20px; padding-top:10px;\" class=\"hupso-share-buttons\"><!-- Hupso Share Buttons - http:\/\/www.hupso.com\/share\/ --><a class=\"hupso_toolbar\" href=\"http:\/\/www.hupso.com\/share\/\"><img src=\"https:\/\/static.hupso.com\/share\/buttons\/share-medium.png\" style=\"border:0px; padding-top:5px; float:left;\" alt=\"Share\"\/><\/a><script type=\"text\/javascript\">var hupso_services_t=new Array(\"Twitter\",\"Facebook\",\"Google Plus\",\"Linkedin\",\"StumbleUpon\",\"Digg\",\"Reddit\",\"Bebo\",\"Delicious\"); var hupso_toolbar_size_t=\"medium\";var hupso_url_t=\"\";var hupso_title_t=\"Grunduirea suprafetelor metalice\";<\/script><script type=\"text\/javascript\" src=\"https:\/\/static.hupso.com\/share\/js\/share_toolbar.js\"><\/script><!-- Hupso Share Buttons --><\/div>","protected":false},"excerpt":{"rendered":"<p>Grunduirea\u00a0este operatia prin care se aplica suprafetei metalului prima pelicula de material, ce constituie baza acoperirilor ulterioare. Pelicula de grund are rolul de a realiza o buna legatura intre suprafata metalului si pelicula urmatoare care se suprapune peste cea de grund. Acesta pelicula de grund poate indeplini mai multe functii:\u00a0de izolare a metalului fata de [&hellip;]<\/p>\n<div style=\"padding-bottom:20px; padding-top:10px;\" class=\"hupso-share-buttons\"><!-- Hupso Share Buttons - http:\/\/www.hupso.com\/share\/ --><a class=\"hupso_toolbar\" href=\"http:\/\/www.hupso.com\/share\/\"><img src=\"https:\/\/static.hupso.com\/share\/buttons\/share-medium.png\" style=\"border:0px; padding-top:5px; float:left;\" alt=\"Share\"\/><\/a><script type=\"text\/javascript\">var hupso_services_t=new Array(\"Twitter\",\"Facebook\",\"Google Plus\",\"Linkedin\",\"StumbleUpon\",\"Digg\",\"Reddit\",\"Bebo\",\"Delicious\"); var hupso_toolbar_size_t=\"medium\";var hupso_url_t=\"\";var hupso_title_t=\"Grunduirea suprafetelor metalice\";<\/script><script type=\"text\/javascript\" src=\"https:\/\/static.hupso.com\/share\/js\/share_toolbar.js\"><\/script><!-- Hupso Share Buttons --><\/div>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[5],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.6 - 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