{"id":161347,"date":"2026-01-22T09:19:55","date_gmt":"2026-01-22T08:19:55","guid":{"rendered":"https:\/\/stalesia.com\/high-temperature-strength-and-heat-resistance-of-steel\/"},"modified":"2026-03-09T09:04:12","modified_gmt":"2026-03-09T08:04:12","slug":"high-temperature-strength-and-heat-resistance-of-steel","status":"publish","type":"post","link":"https:\/\/stalesia.com\/en\/knowledge-base\/high-temperature-strength-and-heat-resistance-of-steel\/","title":{"rendered":"High-temperature strength and heat resistance of steel"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Maszyny wykorzystywane we wsp\u00f3\u0142czesnym przemy\u015ble ci\u0119\u017ckim charakteryzuj\u0105 si\u0119 du\u017c\u0105 odporno\u015bci\u0105 na dzia\u0142anie wysokich temperatur. Takie w\u0142a\u015bciwo\u015bci zapewnia im stal \u017caroodporna, z kt\u00f3rej wykonane s\u0105 r\u00f3\u017cnego rodzaju\u00a0<a href=\"\/en\/pipes-and-tubes\/\">rury bezszwowe<\/a>, blachy, szyny kolejowe i tramwajowe, hollow bar, kszta\u0142tki, k\u0105towniki oraz inne elementy, stosowane w produkcji urz\u0105dze\u0144 pracuj\u0105cych w wysokich temperaturach, na przyk\u0142ad kot\u0142y czy piece przemys\u0142owe w g\u00f3rnictwie, hutnictwie, transporcie, budownictwie, przemy\u015ble samochodowym, odlewnictwie.<\/p>\n\n<p class=\"wp-block-paragraph\">\u017baroodporno\u015b\u0107 stali zapewnia jej sk\u0142ad chemiczny, kt\u00f3ry cechuje si\u0119 wysok\u0105 zawarto\u015bci\u0105 chromu oraz dodatk\u00f3w stopowych, takich jak: molibden, wolfram, krzem oraz aluminium. Dzi\u0119ki temu stal wzmocniona jest o w\u0142a\u015bciwo\u015bci \u017carowytrzyma\u0142e, przez co jest du\u017co odporniejsza na korozyjne dzia\u0142anie gor\u0105cych gaz\u00f3w, o temperaturze powy\u017cej 550\u00b0C. Ze wzgl\u0119d\u00f3w technologicznych stal wzbogacana jest r\u00f3wnie\u017c o niewielkie ilo\u015bci niklu (maksymalnie 4%), kt\u00f3re mog\u0105 decydowa\u0107 o jej strukturze. Stal najcz\u0119\u015bciej posiada struktur\u0119 ferrytyczno-austenityczn\u0105 lub ferrytyczn\u0105, kt\u00f3ra charakteryzuje si\u0119 wysok\u0105 podatno\u015bci\u0105 na krucho\u015b\u0107, zwi\u0105zan\u0105 z wydzielaniem w\u0119glik\u00f3w w wysokiej temperaturze (350-550\u00b0C).<\/p>\n\n<p class=\"wp-block-paragraph\">W\u015br\u00f3d grupy stali odpornych na korozj\u0119 znajduj\u0105 si\u0119 nie tylko materia\u0142y \u017caroodporne i nierdzewne, ale r\u00f3wnie\u017c kwasoodporne. Ka\u017cdy z tych gatunk\u00f3w ma swoje oznaczenie \u2013 stale \u017caroodporne i \u017carowytrzyma\u0142e posiadaj\u0105 symbole od 1.47\u2026 do 1.48\u2026 Je\u015bli chodzi o spawalno\u015b\u0107 stali \u017caroodpornych, w przypadku gatunk\u00f3w ferrytycznych ca\u0142y proces wymaga wcze\u015bniejszego podgrzania do temperatury 100-300\u00b0C. Dodatkowo, po zako\u0144czeniu spawania wymagana jest obr\u00f3bka, kt\u00f3rej g\u0142\u00f3wnym elementem jest wy\u017carzanie w temperaturze oko\u0142o 750-800\u00b0C. Dotyczy to takich gatunk\u00f3w jak: 1.4742 (X10CrAlSi18), 1.4762 oraz 1.4724 (X10CrAlSi13). S\u0105 jednak materia\u0142y o znacznie lepszych w\u0142a\u015bciwo\u015bciach spawalniczych, dzi\u0119ki czemu po zako\u0144czonym procesie nie nale\u017cy dokonywa\u0107 obr\u00f3bki cieplnej. Takie cechy posiada stal 1.4749 (AlSi446).<\/p>\n\n<p class=\"wp-block-paragraph\">Aby oceni\u0107 stopie\u0144 \u017caroodporno\u015bci danego materia\u0142u, przeprowadza si\u0119 specjalistyczne testy \u2013 przez 24 godziny pr\u00f3bka stali nagrzewana jest do okre\u015blonej temperatury, po czym sch\u0142adzana do 20\u00b0C. Zanim z powierzchni zostanie usuni\u0119ta powsta\u0142a ochronna warstwa zgorzeliny, czynno\u015b\u0107 nagrzewania i ch\u0142odzenia nale\u017cy powt\u00f3rzy\u0107 pi\u0119ciokrotnie. Potem nast\u0119puje wa\u017cenie materia\u0142u, kt\u00f3re pozwala na ustalenie ubytku masy. To w\u0142a\u015bnie ten parametr decyduje o tym, czy poddana pr\u00f3bie stal posiada w\u0142a\u015bciwo\u015bci \u017caroodporne. \u017baroodporno\u015b\u0107 stali mo\u017cna ulepszy\u0107 poprzez dodanie pierwiastk\u00f3w ziem rzadkich (lantan, cer, prazeodym, neodym), dzi\u0119ki czemu tlenki znajduj\u0105ce si\u0119 w warstwie ochronnej b\u0119d\u0105 bardziej odporne na z\u0142uszczanie si\u0119, kt\u00f3re jest bezpo\u015bredni\u0105 przyczyn\u0105 ubytku materia\u0142u podczas u\u017cytkowania.<\/p>\n\n<p class=\"wp-block-paragraph\">Stal \u017caroodporna w wi\u0119kszo\u015bci przypadk\u00f3w ma r\u00f3wnie\u017c w\u0142a\u015bciwo\u015bci nierdzewne. Podstawow\u0105 r\u00f3\u017cnic\u0105 mi\u0119dzy nimi jest ich przeznaczenie. Materia\u0142y nierdzewne mog\u0105 by\u0107 stosowane zar\u00f3wno w temperaturach ujemnych, bardzo wysokich (oko\u0142o 500\u00b0C), jak r\u00f3wnie\u017c w warunkach pokojowych. Takie cechy sprawiaj\u0105, \u017ce s\u0105 to materia\u0142y o wysokiej odporno\u015bci na korozj\u0119. Maj\u0105 wi\u0119c zastosowanie w konstrukcjach budowlanych, np. do zbrojenia \u015bcian betonem. Je\u015bli chodzi o stale \u017caroodporne, s\u0105 one nie tylko wytrzyma\u0142e na temperatur\u0119 powy\u017cej 500\u00b0C, ale charakteryzuj\u0105 si\u0119 r\u00f3wnie\u017c odporno\u015bci\u0105 na pe\u0142zanie, czyli na powoln\u0105 zmian\u0119 kszta\u0142tu materia\u0142u, wynikaj\u0105c\u0105 z napr\u0119\u017ce\u0144, ni\u017cszych od granicy spr\u0119\u017cysto\u015bci materia\u0142u.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Maszyny wykorzystywane we wsp\u00f3\u0142czesnym przemy\u015ble ci\u0119\u017ckim charakteryzuj\u0105 si\u0119 du\u017c\u0105 odporno\u015bci\u0105 na dzia\u0142anie wysokich temperatur. Takie w\u0142a\u015bciwo\u015bci zapewnia im stal \u017caroodporna, z kt\u00f3rej wykonane s\u0105 r\u00f3\u017cnego rodzaju\u00a0rury bezszwowe, blachy, szyny kolejowe i tramwajowe, hollow bar, kszta\u0142tki, k\u0105towniki oraz inne elementy, stosowane w produkcji urz\u0105dze\u0144 pracuj\u0105cych w wysokich temperaturach, na przyk\u0142ad kot\u0142y czy piece przemys\u0142owe w g\u00f3rnictwie, [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":42781,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[2295],"tags":[],"class_list":["post-161347","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-materials"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>High-temperature strength and heat resistance of 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