{"id":2191,"date":"2021-07-21T14:05:56","date_gmt":"2021-07-21T14:05:56","guid":{"rendered":"https:\/\/wldstainless.com\/?p=2191"},"modified":"2021-07-21T14:05:56","modified_gmt":"2021-07-21T14:05:56","slug":"whats-dss","status":"publish","type":"post","link":"https:\/\/wldstainless.com\/cs\/whats-dss\/","title":{"rendered":"Co je DSS?"},"content":{"rendered":"

DSS, zkratka Duplex nerezov\u00e9 oceli, je klasifikace nerezov\u00fdch ocel\u00ed slo\u017een\u00fdch ze dvou ocel\u00ed, p\u0159i\u010dem\u017e st\u0159edn\u00ed je tvo\u0159ena bu\u010f austenitizovanou nebo \u017eelezitou. Tyto oceli jsou tak\u00e9 zn\u00e1m\u00e9 jako duplexn\u00ed oceli, proto\u017ee jejich chemick\u00e1 struktura m\u00e1 dv\u011b odli\u0161n\u00e9 f\u00e1ze, z nich\u017e ob\u011b jsou obvykle reprezentov\u00e1ny martenzitem. Tyto oceli jsou velmi u\u017eite\u010dn\u00e9 v aplikac\u00edch vy\u017eaduj\u00edc\u00edch extr\u00e9mn\u00ed hou\u017eevnatost, proto\u017ee ob\u011b f\u00e1ze lze aplikovat spole\u010dn\u011b p\u0159i vysok\u00fdch teplot\u00e1ch a tlac\u00edch. Duplexn\u00ed nerezov\u00e1 ocel je schopna z\u00edskat dostate\u010dnou tvrdost jak ve sv\u00e9 austenitick\u00e9, tak martenzitick\u00e9 f\u00e1zi d\u00edky p\u0159\u00edtomnosti zna\u010dn\u00e9ho mno\u017estv\u00ed zbytkov\u00e9ho austenitu. B\u011b\u017en\u011b pou\u017e\u00edvan\u00e9 t\u0159\u00eddy DSS jsou S31803, S32750 a SS32550.<\/p>\n

Duplexn\u00ed t\u0159\u00eddy nerezov\u00e9 oceli<\/em><\/h2>\n\n\n\n\n\n\n\n
Typ<\/td>\nUNS<\/td>\n\u0160v\u00e9dsko<\/td>\nN\u011bmec<\/td>\nFrancie<\/td>\nJaponsko<\/td>\n<\/tr>\n
N\u00edzk\u00e1 slitina<\/td>\nUN23 (SAF2304)<\/td>\nSS232 (SAF2304)<\/td>\nW.Nr.1.4362<\/td>\nUR35N<\/td>\nDP11<\/td>\n<\/tr>\n
St\u0159edn\u00ed slitina<\/td>\nUNS S31500<\/p>\n

UNS S31803<\/a><\/td>\n

SS2376(3RE60)<\/p>\n

SS2377(SAF2205)<\/td>\n

W.Nr.1.4417<\/p>\n

W.Nr.1.4462<\/td>\n

UR45N<\/td>\nDP1<\/p>\n

DP8<\/td>\n<\/tr>\n

Vysok\u00e1 slitina<\/td>\nUNS S32900<\/p>\n

UNS S31260<\/td>\n

SS2324(10RE51)<\/td>\nW.Nr.1.4460<\/p>\n

W.Nr.1.4501<\/td>\n

 <\/td>\n329J1<\/p>\n

329J2L<\/td>\n<\/tr>\n

Super duplex<\/td>\nUNS S32750<\/a><\/p>\n

UNS S32550<\/td>\n

SS2328(SAF2507)<\/td>\nW.Nr.1.4410<\/p>\n

W.Nr.1.4507<\/td>\n

UR47N+<\/p>\n

UR52N+<\/td>\n

 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

Krom\u011b samotn\u00e9 slitiny je dal\u0161\u00edm d\u016fle\u017eit\u00fdm faktorem, kter\u00fd p\u0159isp\u00edv\u00e1 k jej\u00ed korozn\u00ed odolnosti, obsah niklu. Nikl se b\u011b\u017en\u011b vyskytuje ve vy\u0161\u0161\u00edch procentech ve v\u011bt\u0161in\u011b slitin, co\u017e z n\u011bj \u010din\u00ed extr\u00e9mn\u011b u\u017eite\u010dnou slo\u017eku. Ve srovn\u00e1n\u00ed s niklem, kter\u00fd se \u010dasto pou\u017e\u00edv\u00e1 ve vysoce v\u00fdkonn\u00fdch slitin\u00e1ch pro svou elektrickou vodivost a schopnost vytv\u00e1\u0159et kvalitn\u00ed slitiny, nen\u00ed nikl tak \u010dasto pou\u017e\u00edv\u00e1n p\u0159i v\u00fdrob\u011b vysoce kvalitn\u00ed duplexn\u00ed nerezov\u00e9 oceli. Jedn\u00edm z nejzaj\u00edmav\u011bj\u0161\u00edch aspekt\u016f slitin niklu je jejich odolnost proti korozi, co\u017e z nich d\u011bl\u00e1 nejlep\u0161\u00ed alternativu pro vysoce v\u00fdkonn\u00e9 materi\u00e1ly. Po sm\u00edch\u00e1n\u00ed s ocel\u00ed vytv\u00e1\u0159\u00ed nikl stabiln\u011bj\u0161\u00ed slitinu, kter\u00e1 m\u016f\u017ee zv\u00fd\u0161it odolnost slitiny proti opot\u0159eben\u00ed a mechanickou pevnost.<\/p>\n

Dal\u0161\u00ed v\u00fdznamnou vlastnost\u00ed t\u00e9to slitiny je jej\u00ed vysok\u00e1 odolnost proti tepeln\u00e9 rozta\u017enosti. Vykazuje vysokou \u00farove\u0148 odolnosti proti tepeln\u00e9 rozta\u017enosti navzdory schopnosti austenitick\u00fdch nerezov\u00fdch ocel\u00ed v\u016f\u010di rozta\u017enosti d\u00edky sv\u00fdm vynikaj\u00edc\u00edm mechanick\u00fdm vlastnostem. Tato vlastnost mu d\u00e1v\u00e1 vynikaj\u00edc\u00ed schopnost ochrany proti korozi, zejm\u00e9na b\u011bhem cyklu temperov\u00e1n\u00ed \/ odstra\u0148ov\u00e1n\u00ed skvrn. Vynikaj\u00edc\u00ed odolnost proti korozi duplexn\u00ed nerezov\u00e9 oceli j\u00ed umo\u017e\u0148uje odolat \u0161irok\u00e9mu spektru chemik\u00e1li\u00ed. M\u00e1 tak\u00e9 vysokou \u00farove\u0148 odolnosti v\u016f\u010di olej\u016fm, tuk\u016fm a jin\u00fdm kapalin\u00e1m s vysokou \u00farovn\u00ed viskozity.<\/p>\n

Krom\u011b v\u00fd\u0161e uveden\u00fdch vlastnost\u00ed je duplexn\u00ed nerezov\u00e1 ocel obl\u00edben\u00e1 tak\u00e9 pro svou vysokou pevnost a odolnost. Jeho vysok\u00e1 pevnost a\u017e 300 kg je umo\u017en\u011bna jeho schopnost\u00ed vyu\u017e\u00edvat dvousm\u011brn\u00e9 trnov\u00e9 v\u00e1lce. Skl\u00e1d\u00e1 se z tvrd\u00fdch uhl\u00edkov\u00fdch vl\u00e1ken svinut\u00fdch do p\u00e1s\u016f, kter\u00e9 jsou na obou stran\u00e1ch propleten\u00e9 a zformovan\u00e9 do ty\u010de s trnem. Dal\u0161\u00ed vlastnost\u00ed, kter\u00e1 z n\u011bj d\u011bl\u00e1 vynikaj\u00edc\u00ed slitinu, je to, \u017ee jeho povrch je zcela hladk\u00fd bez r\u00fdh.<\/p>\n

Jedn\u00edm z nejd\u016fle\u017eit\u011bj\u0161\u00edch faktor\u016f, kter\u00e9 p\u0159isp\u00edvaj\u00ed k trvanlivosti duplexn\u00edch nerezov\u00fdch ocel\u00ed, je jejich n\u00edzk\u00e1 odolnost proti d\u016flkov\u00e9 korozi. Tyto oceli vykazuj\u00ed n\u00edzkou rychlost tvorby krystalick\u00fdch zrn uvnit\u0159 hork\u00e9 slitiny. Lze je pou\u017e\u00edt pro stavbu velk\u00fdch i mal\u00fdch staveb v r\u016fzn\u00fdch pr\u016fmyslov\u00fdch odv\u011btv\u00edch. Pro svou odolnost v\u016f\u010di krystalick\u00fdm zrn\u016fm jsou vysoce cen\u011bny ve stavebnictv\u00ed.<\/p>\n

Mechanick\u00e9 vlastnosti duplexn\u00ed nerezov\u00e9 oceli nab\u00edzej\u00ed \u0159adu v\u00fdhod, kter\u00e9 z nich d\u011blaj\u00ed vynikaj\u00edc\u00ed volbu pro \u0161irokou \u0161k\u00e1lu aplikac\u00ed. Tyto vlastnosti umo\u017e\u0148uj\u00ed pou\u017eit\u00ed t\u011bchto ocel\u00ed pro r\u016fzn\u00e9 aplikace, v\u010detn\u011b v\u00fdroby sou\u010d\u00e1st\u00ed p\u0159esn\u00e9ho stroj\u00edrenstv\u00ed, v\u00fdm\u011bn\u00edk\u016f tepla a v\u00fdroby plech\u016f. N\u011bkter\u00e9 dal\u0161\u00ed d\u016fle\u017eit\u00e9 vlastnosti tohoto typu slitiny zahrnuj\u00ed vysokou tepelnou toleranci, n\u00edzkou hustotu a vynikaj\u00edc\u00ed odolnost proti korozi. Nab\u00edzej\u00ed tak\u00e9 \u0159adu mechanick\u00fdch vlastnost\u00ed, kter\u00e9 p\u0159isp\u00edvaj\u00ed k celkov\u00fdm vlastnostem slitiny. Pat\u0159\u00ed mezi n\u011b extr\u00e9mn\u00ed tvrdost, hou\u017eevnatost, chemick\u00e1 odolnost a odolnost proti te\u010den\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"

DSS, zkratka Duplex nerezov\u00e9 oceli, je klasifikace korozivzdorn\u00fdch ocel\u00ed slo\u017een\u00fdch ze dvou ocel\u00ed, p\u0159i\u010dem\u017e st\u0159edn\u00ed je tvo\u0159ena bu\u010f austenitizovanou nebo \u017eelezitou. Tyto oceli jsou tak\u00e9 zn\u00e1m\u00e9 jako duplexn\u00ed oceli, proto\u017ee jejich chemick\u00e1 struktura m\u00e1 dv\u011b odli\u0161n\u00e9 f\u00e1ze, z nich\u017e ob\u011b jsou obvykle reprezentov\u00e1ny martenzitem. Tyto oceli jsou velmi [\u2026]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2191","post","type-post","status-publish","format-standard","hentry","category-social-activities"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/wldstainless.com\/cs\/wp-json\/wp\/v2\/posts\/2191","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wldstainless.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wldstainless.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/cs\/wp-json\/wp\/v2\/comments?post=2191"}],"version-history":[{"count":1,"href":"https:\/\/wldstainless.com\/cs\/wp-json\/wp\/v2\/posts\/2191\/revisions"}],"predecessor-version":[{"id":2192,"href":"https:\/\/wldstainless.com\/cs\/wp-json\/wp\/v2\/posts\/2191\/revisions\/2192"}],"wp:attachment":[{"href":"https:\/\/wldstainless.com\/cs\/wp-json\/wp\/v2\/media?parent=2191"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wldstainless.com\/cs\/wp-json\/wp\/v2\/categories?post=2191"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wldstainless.com\/cs\/wp-json\/wp\/v2\/tags?post=2191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}