{"id":6218,"date":"2019-10-14T17:34:13","date_gmt":"2019-10-14T15:34:13","guid":{"rendered":"https:\/\/polariseskola.eus\/la-corrosion-galvanica\/"},"modified":"2019-10-24T19:38:04","modified_gmt":"2019-10-24T17:38:04","slug":"korrosio-galbanikoa","status":"publish","type":"post","link":"https:\/\/polariseskola.eus\/eu\/korrosio-galbanikoa\/","title":{"rendered":"Korrosio galbanikoa"},"content":{"rendered":"<p>Kasko metalikoek, eta bereziki altzairuzkoek, korrosio galvanikoaren eraginak jasaten dituzte. Gure ontzi gehienak zuntzaz egin dira, eta arazo hori dute zati metalikoetan (helizea nahiz horren ardatza, lemako pala, abortza, etab.).<\/p>\n<p>Baina zer da korrosio galvanikoa? Xehetasun gehiegi eman barik azaltzen ahaleginduko gara: bi metal kontaktuan jartzen ditugunean, prozesu elektrokimiko bat gertatzen da, zeinetan metal batek elektroiak ematen dizkion metal nobleenari; hala, lehenengoak anodo gisa jardungo du eta bigarrenak, berriz, katodo gisa. Metalak elektroi bat galtzen duenean, sortzen den hutsunea oxigenoko beste elektroi batek beteko du; horrek metala hondatuko du, oxidazioaren bidez. Prozesu hori inguru gazietan (ur gazian) bizkortzen da; izan ere, eroankortasun elektriko handia dute eta, ondorioz, elektroiak erraztasunez mugitzen dira.<\/p>\n<p>Hala, inguru gazietan metalak elkarren arteko kontaktuaz babeste aldera, isolatu beharko ditugu. Gogoan izan behar dugu balizko kontaktu hori ez dela bakarrik gure ontziko zati metalikoen artean gertatzen: gertu porturatu diren ontziei ere eragiten die, baita portuko instalazioei ere.<\/p>\n<p>Nola babestu behar ditugu zati metalikoak? Urpeko aldean (murgilduta) dauden gure ontziko zati metalikoak korrosio galvanikotik babesteko, balizko eragin galvanikoa murriztuko duen pintura babesgarria eman behar dugu alde horietan, eta anodo galvanikoak jarri.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-6122 alignleft\" src=\"https:\/\/polariseskola.eus\/wp-content\/uploads\/2019\/10\/67573600-d38d-4863-b4f3-690387e4c217-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/polariseskola.eus\/wp-content\/uploads\/2019\/10\/67573600-d38d-4863-b4f3-690387e4c217-300x225.jpg 300w, https:\/\/polariseskola.eus\/wp-content\/uploads\/2019\/10\/67573600-d38d-4863-b4f3-690387e4c217-600x450.jpg 600w, https:\/\/polariseskola.eus\/wp-content\/uploads\/2019\/10\/67573600-d38d-4863-b4f3-690387e4c217-768x576.jpg 768w, https:\/\/polariseskola.eus\/wp-content\/uploads\/2019\/10\/67573600-d38d-4863-b4f3-690387e4c217-1024x768.jpg 1024w, https:\/\/polariseskola.eus\/wp-content\/uploads\/2019\/10\/67573600-d38d-4863-b4f3-690387e4c217-850x638.jpg 850w, https:\/\/polariseskola.eus\/wp-content\/uploads\/2019\/10\/67573600-d38d-4863-b4f3-690387e4c217.jpg 1600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>Anodo galvanikoak zinkezko pieza batzuk dira, urpeko aldean dauden gure ontziko pieza metalikoetatik gertu jartzen direnak. Zinka ez da kirol-ontzietan egon ohi diren metalak bezain noblea eta, hortaz, anodo gisa arituko da, elektroiak askatuz eta guztiz hondatu arte galvanizatuz.<\/p>\n<p>Anodo horiek helizearen kaskoan zein ardatzean eta lemaren palan egon ohi dira; hala ere, anodo gehigarriak egon daitezke, ontziaren eraikuntzaren arabera.<\/p>\n<p>Zein da anodo horiek izan behar duten pisua? Formula hau erabiliz kalkulatzen da pisua:<\/p>\n<p>P=K*L*(B+D)\/34,39<img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-6120 alignright\" src=\"https:\/\/polariseskola.eus\/wp-content\/uploads\/2019\/10\/2ee4a547-d781-4cb7-aada-15429068bebe-225x300.jpg\" alt=\"\" width=\"225\" height=\"300\" srcset=\"https:\/\/polariseskola.eus\/wp-content\/uploads\/2019\/10\/2ee4a547-d781-4cb7-aada-15429068bebe-225x300.jpg 225w, https:\/\/polariseskola.eus\/wp-content\/uploads\/2019\/10\/2ee4a547-d781-4cb7-aada-15429068bebe-600x800.jpg 600w, https:\/\/polariseskola.eus\/wp-content\/uploads\/2019\/10\/2ee4a547-d781-4cb7-aada-15429068bebe-768x1024.jpg 768w, https:\/\/polariseskola.eus\/wp-content\/uploads\/2019\/10\/2ee4a547-d781-4cb7-aada-15429068bebe-638x850.jpg 638w, https:\/\/polariseskola.eus\/wp-content\/uploads\/2019\/10\/2ee4a547-d781-4cb7-aada-15429068bebe.jpg 1200w\" sizes=\"auto, (max-width: 225px) 100vw, 225px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Ikur horiek honako balio hauei dagozkie:<\/p>\n<p>P: Anodoen pisua, kilotan<br \/>\nK: Kaskoaren materialaren araberako koefizientea<\/p>\n<p>0,165 Zuntza<br \/>\n0,625 Aluminioa<br \/>\n1,000 Altzairua<\/p>\n<p>L: Esloia, oinetan<br \/>\nB: Zabalera, oinetan<br \/>\nD: Zingoa, oinetan<\/p>\n<p>Horren arabera, Polaris Bat ontzirako behar diren anodoen pisua kalkulatuko dugu; honako neurri hauek ditu: 11\u00a0metroko esloia, 3,72\u00a0metroko zabalera eta 1,82\u00a0metroko zingoa. Emaitza 3\u00a0kg baino zertxobait gehiago da.<\/p>\n<p>Kalkulua egin ostean ateratzen den pisua urtebetez baino zertxobait gehiago eten barik eta segurtasun-marjinarekin nabigatzeko behar den pisua da. Horrenbestez, pisu hori egokitu eta murriztu ahalko dugu, aurreikusitako mantentze-lanen arabera.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Kasko metalikoek, eta bereziki altzairuzkoek, korrosio galvanikoaren eraginak jasaten dituzte. Gure ontzi gehienak zuntzaz egin dira, eta arazo hori dute zati metalikoetan (helizea nahiz horren ardatza, lemako pala, abortza, etab.). Baina zer da korrosio galvanikoa? Xehetasun gehiegi eman barik azaltzen ahaleginduko gara: bi metal kontaktuan jartzen ditugunean, prozesu elektrokimiko bat gertatzen da, zeinetan metal batek elektroiak ematen dizkion metal nobleenari; hala, lehenengoak anodo gisa jardungo du eta bigarrenak, berriz, katodo gisa. Metalak elektroi bat galtzen duenean, sortzen den hutsunea oxigenoko beste elektroi batek beteko du; horrek metala hondatuko du, oxidazioaren bidez. Prozesu hori inguru gazietan (ur gazian) bizkortzen da; izan [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":6128,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[76,77],"tags":[],"class_list":["post-6218","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-escuela-eu","category-navigacion-eu"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Korrosio galbanikoa - Polaris Eskola<\/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:\/\/polariseskola.eus\/eu\/korrosio-galbanikoa\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Korrosio galbanikoa - Polaris Eskola\" \/>\n<meta property=\"og:description\" content=\"Kasko metalikoek, eta bereziki altzairuzkoek, korrosio galvanikoaren eraginak jasaten dituzte. Gure ontzi gehienak zuntzaz egin dira, eta arazo hori dute zati metalikoetan (helizea nahiz horren ardatza, lemako pala, abortza, etab.). Baina zer da korrosio galvanikoa? Xehetasun gehiegi eman barik azaltzen ahaleginduko gara: bi metal kontaktuan jartzen ditugunean, prozesu elektrokimiko bat gertatzen da, zeinetan metal batek elektroiak ematen dizkion metal nobleenari; hala, lehenengoak anodo gisa jardungo du eta bigarrenak, berriz, katodo gisa. Metalak elektroi bat galtzen duenean, sortzen den hutsunea oxigenoko beste elektroi batek beteko du; horrek metala hondatuko du, oxidazioaren bidez. Prozesu hori inguru gazietan (ur gazian) bizkortzen da; izan [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/polariseskola.eus\/eu\/korrosio-galbanikoa\/\" \/>\n<meta property=\"og:site_name\" content=\"Polaris Eskola\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/polariseskola\/\" \/>\n<meta property=\"article:published_time\" content=\"2019-10-14T15:34:13+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-10-24T17:38:04+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/polariseskola.eus\/wp-content\/uploads\/2019\/10\/2fb7950c-6430-4195-94b1-34e767ecf75f.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"1200\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Polaris Eskola\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@Eskolapolaris\" \/>\n<meta name=\"twitter:site\" content=\"@Eskolapolaris\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Polaris Eskola\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutua\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/polariseskola.eus\\\/eu\\\/korrosio-galbanikoa\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/polariseskola.eus\\\/eu\\\/korrosio-galbanikoa\\\/\"},\"author\":{\"name\":\"Polaris Eskola\",\"@id\":\"https:\\\/\\\/polariseskola.eus\\\/eu\\\/#\\\/schema\\\/person\\\/151108a274eff779ca2ec559c36c6b90\"},\"headline\":\"Korrosio galbanikoa\",\"datePublished\":\"2019-10-14T15:34:13+00:00\",\"dateModified\":\"2019-10-24T17:38:04+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/polariseskola.eus\\\/eu\\\/korrosio-galbanikoa\\\/\"},\"wordCount\":351,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/polariseskola.eus\\\/eu\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/polariseskola.eus\\\/eu\\\/korrosio-galbanikoa\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/polariseskola.eus\\\/wp-content\\\/uploads\\\/2019\\\/10\\\/2fb7950c-6430-4195-94b1-34e767ecf75f.jpg\",\"articleSection\":[\"Eskola\",\"Nabigazio-berriak\"],\"inLanguage\":\"eu\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/polariseskola.eus\\\/eu\\\/korrosio-galbanikoa\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/polariseskola.eus\\\/eu\\\/korrosio-galbanikoa\\\/\",\"url\":\"https:\\\/\\\/polariseskola.eus\\\/eu\\\/korrosio-galbanikoa\\\/\",\"name\":\"Korrosio galbanikoa - 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Gure ontzi gehienak zuntzaz egin dira, eta arazo hori dute zati metalikoetan (helizea nahiz horren ardatza, lemako pala, abortza, etab.). Baina zer da korrosio galvanikoa? Xehetasun gehiegi eman barik azaltzen ahaleginduko gara: bi metal kontaktuan jartzen ditugunean, prozesu elektrokimiko bat gertatzen da, zeinetan metal batek elektroiak ematen dizkion metal nobleenari; hala, lehenengoak anodo gisa jardungo du eta bigarrenak, berriz, katodo gisa. Metalak elektroi bat galtzen duenean, sortzen den hutsunea oxigenoko beste elektroi batek beteko du; horrek metala hondatuko du, oxidazioaren bidez. 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