{"id":415,"date":"2020-07-01T09:00:30","date_gmt":"2020-07-01T07:00:30","guid":{"rendered":"http:\/\/www.jureknawrocki.com\/?p=415"},"modified":"2026-03-14T08:15:28","modified_gmt":"2026-03-14T07:15:28","slug":"jak-pekaja-sciany-szczelne-kotlow","status":"publish","type":"post","link":"https:\/\/jureknawrocki.com\/en\/jak-pekaja-sciany-szczelne-kotlow\/","title":{"rendered":"Jak p\u0119kaj\u0105 \u015bciany szczelne kot\u0142\u00f3w"},"content":{"rendered":"<p>Zjawisko krucho\u015bci i p\u0119kanie \u015bcian szczelnych kot\u0142\u00f3w wodnorurkowych jest trudnym do opanowania zagadnieniem technicznym cz\u0119sto analizowanym w literaturze. W niekt\u00f3rych warunkach eksploatacyjnych mo\u017ce doj\u015b\u0107 do gwa\u0142townego, trwaj\u0105cego kilka do kilkunastu godzin ataku wodorowego ko\u0144cz\u0105cego si\u0119 kruchym p\u0119kni\u0119ciem. Skutkiem tego zjawiska jest wyrwanie znacznych fragment\u00f3w \u015bciany szczelnej bez wcze\u015bniejszych oznak odkszta\u0142cenia plastycznego.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1841\" src=\"https:\/\/jn.proklik.pl\/wp-content\/uploads\/Jak-pekaja-sciany-szczelne-kotlow-4.webp\" alt=\"\" width=\"511\" height=\"289\" srcset=\"https:\/\/jn.proklik.pl\/wp-content\/uploads\/Jak-pekaja-sciany-szczelne-kotlow-4.webp 511w, https:\/\/jn.proklik.pl\/wp-content\/uploads\/Jak-pekaja-sciany-szczelne-kotlow-4-480x271.webp 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 511px, 100vw\" \/><\/p>\n<p style=\"text-align: center;\">\n<p>Badania mikroskopowe wykaza\u0142y, \u017ce kszta\u0142ty zaobserwowanych przekroj\u00f3w p\u0119cherzy, znacznie odbiega\u0142y od idealnych &#8211; ko\u0142a lub elipsy. Posta\u0107 ich by\u0142a nieregularna z fraktalnym rozwini\u0119ciem powierzchni obwodowej. Ponadto zaobserwowano liczne p\u0119kni\u0119cia rozwijaj\u0105ce si\u0119 od powierzchni tych p\u0119cherzy.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1843\" src=\"https:\/\/jn.proklik.pl\/wp-content\/uploads\/Jak-pekaja-sciany-szczelne-kotlow-2.webp\" alt=\"\" width=\"619\" height=\"742\" srcset=\"https:\/\/jn.proklik.pl\/wp-content\/uploads\/Jak-pekaja-sciany-szczelne-kotlow-2.webp 619w, https:\/\/jn.proklik.pl\/wp-content\/uploads\/Jak-pekaja-sciany-szczelne-kotlow-2-480x575.webp 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 619px, 100vw\" \/><\/p>\n<p style=\"text-align: center;\">\n<p>Krucho\u015b\u0107 wodorowa zwi\u0105zana jest z wnikaniem wodoru do metalu w postaci atomowej, gdzie na \u015bciankach mikroszczelin np. powierzchni mi\u0119dzyfazowych siarczek\/osnowa, ulega on rekombinacji w wod\u00f3r cz\u0105steczkowy. Generuje to\u00a0 znaczne ci\u015bnienie dochodz\u0105ce do 1 GPa. W materiale uszkodzonych rur oszacowana zawarto\u015b\u0107 wodoru dochodzi niekiedy do 100 mg\/dm<sup>3<\/sup>. Rozpuszczony w \u017celazie wod\u00f3r dyfunduj\u0105c mo\u017ce reagowa\u0107 z zawartym w stali cementytem. Reakcja ta przebiegaj\u0105ca w nast\u0119puj\u0105cy spos\u00f3b: Fe<sub>3<\/sub>C+ 4H = CH<sub>4 <\/sub>+ 3Fe powoduje otrzymanie metanu. Wytworzone cz\u0105steczki metanu ze wzgl\u0119du na swoj\u0105 wielko\u015b\u0107 nie mog\u0105 dyfundowa\u0107 w stali. Metan gromadz\u0105c si\u0119 w p\u0119cherzach powstaj\u0105cych na granicach ziaren powoduje powstanie wysokich napr\u0119\u017ce\u0144, kt\u00f3re doprowadzaj\u0105 do powstania p\u0119kni\u0119\u0107 na granicach ziaren.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1844\" src=\"https:\/\/jn.proklik.pl\/wp-content\/uploads\/Jak-pekaja-sciany-szczelne-kotlow-1.webp\" alt=\"\" width=\"440\" height=\"475\" srcset=\"https:\/\/jureknawrocki.com\/wp-content\/uploads\/Jak-pekaja-sciany-szczelne-kotlow-1.webp 440w, https:\/\/jureknawrocki.com\/wp-content\/uploads\/Jak-pekaja-sciany-szczelne-kotlow-1-278x300.webp 278w\" sizes=\"(max-width: 440px) 100vw, 440px\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>Zjawisko krucho\u015bci i p\u0119kanie \u015bcian szczelnych kot\u0142\u00f3w wodnorurkowych jest trudnym do opanowania zagadnieniem technicznym cz\u0119sto analizowanym w literaturze. W niekt\u00f3rych warunkach eksploatacyjnych mo\u017ce doj\u015b\u0107 do gwa\u0142townego, trwaj\u0105cego kilka do kilkunastu godzin ataku wodorowego ko\u0144cz\u0105cego si\u0119 kruchym p\u0119kni\u0119ciem. Skutkiem tego zjawiska jest wyrwanie znacznych fragment\u00f3w \u015bciany szczelnej bez wcze\u015bniejszych oznak odkszta\u0142cenia plastycznego. Badania mikroskopowe wykaza\u0142y, \u017ce [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1842,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[124,125,15],"tags":[12],"class_list":["post-415","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mechanika-pekania","category-mes","category-projekty","tag-awarie"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Jak p\u0119kaj\u0105 \u015bciany szczelne kot\u0142\u00f3w - Jerzy Nawrocki<\/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:\/\/jureknawrocki.com\/en\/jak-pekaja-sciany-szczelne-kotlow\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jak p\u0119kaj\u0105 \u015bciany szczelne kot\u0142\u00f3w - Jerzy Nawrocki\" \/>\n<meta property=\"og:description\" content=\"Zjawisko krucho\u015bci i p\u0119kanie \u015bcian szczelnych kot\u0142\u00f3w wodnorurkowych jest trudnym do opanowania zagadnieniem technicznym cz\u0119sto analizowanym w literaturze. W niekt\u00f3rych warunkach eksploatacyjnych mo\u017ce doj\u015b\u0107 do gwa\u0142townego, trwaj\u0105cego kilka do kilkunastu godzin ataku wodorowego ko\u0144cz\u0105cego si\u0119 kruchym p\u0119kni\u0119ciem. Skutkiem tego zjawiska jest wyrwanie znacznych fragment\u00f3w \u015bciany szczelnej bez wcze\u015bniejszych oznak odkszta\u0142cenia plastycznego. 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W niekt\u00f3rych warunkach eksploatacyjnych mo\u017ce doj\u015b\u0107 do gwa\u0142townego, trwaj\u0105cego kilka do kilkunastu godzin ataku wodorowego ko\u0144cz\u0105cego si\u0119 kruchym p\u0119kni\u0119ciem. Skutkiem tego zjawiska jest wyrwanie znacznych fragment\u00f3w \u015bciany szczelnej bez wcze\u015bniejszych oznak odkszta\u0142cenia plastycznego. 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