{"id":57,"date":"2024-09-21T13:57:46","date_gmt":"2024-09-21T13:57:46","guid":{"rendered":"https:\/\/pwhtsolutions.net\/?p=57"},"modified":"2024-09-21T13:57:47","modified_gmt":"2024-09-21T13:57:47","slug":"co-je-tepelne-zpracovani-po-svarovani","status":"publish","type":"post","link":"https:\/\/pwhtsolutions.net\/cs\/what-is-post-weld-heat-treatment\/","title":{"rendered":"Co je tepeln\u00e9 zpracov\u00e1n\u00ed po sva\u0159ov\u00e1n\u00ed?"},"content":{"rendered":"

Tepeln\u00e9 zpracov\u00e1n\u00ed po sva\u0159ov\u00e1n\u00ed je standardn\u00ed a povinn\u00fd proces v ropn\u00e9m, plyn\u00e1rensk\u00e9m a petrochemick\u00e9m pr\u016fmyslu, kter\u00fd sni\u017euje zbytkov\u00e1 nap\u011bt\u00ed vznikaj\u00edc\u00ed p\u0159i sva\u0159ov\u00e1n\u00ed ocelov\u00fdch sou\u010d\u00e1st\u00ed.<\/p>\n

Pr\u016fmyslov\u00e9 p\u0159edpisy mohou vy\u017eadovat testov\u00e1n\u00ed v z\u00e1vislosti na chemick\u00e9m slo\u017een\u00ed a tlou\u0161\u0165ce testovan\u00e9ho materi\u00e1lu, p\u0159i\u010dem\u017e testov\u00e1n\u00ed zaji\u0161\u0165uje tak\u00e9 optim\u00e1ln\u00ed mechanick\u00e9 a metalurgick\u00e9 vlastnosti.<\/p>\n

Definice<\/h2>\n

Tepeln\u00e9 zpracov\u00e1n\u00ed po sva\u0159ov\u00e1n\u00ed (PWHT) je proces, kter\u00fd rozptyluje zbytkov\u00e1 nap\u011bt\u00ed ve sva\u0159ovan\u00fdch konstrukc\u00edch jejich sn\u00ed\u017een\u00edm nebo p\u0159erozd\u011blen\u00edm, zvy\u0161uje tvrdost, zlep\u0161uje ta\u017enost a zm\u00edr\u0148uje k\u0159ehk\u00fd lom. PWHT je ned\u00edlnou sou\u010d\u00e1st\u00ed sva\u0159ovac\u00edch postup\u016f a povinn\u00fdm krokem v mnoha p\u0159edpisech pro tlakov\u00e9 n\u00e1doby a potrub\u00ed; jej\u00ed nezbytnost z\u00e1vis\u00ed na r\u016fzn\u00fdch faktorech v\u010detn\u011b chemick\u00e9ho slo\u017een\u00ed a tlou\u0161\u0165ky materi\u00e1lu; a\u010dkoli nen\u00ed v\u017edy nezbytn\u00e1, m\u016f\u017ee v\u00fdznamn\u011b sn\u00ed\u017eit pravd\u011bpodobnost poruch svar\u016f a z\u00e1rove\u0148 splnit po\u017eadavky p\u0159edpis\u016f.<\/p>\n

sva\u0159ov\u00e1n\u00ed je ned\u00edlnou sou\u010d\u00e1st\u00ed konstrukce za\u0159\u00edzen\u00ed a potrub\u00ed, ale sva\u0159ovac\u00ed operace mohou n\u00e1hodn\u011b vn\u00e9st do kovu zbytkov\u00e1 nap\u011bt\u00ed, kter\u00e1 sni\u017euj\u00ed jeho pevnost, co\u017e vede ke sn\u00ed\u017een\u00ed odolnosti proti po\u0161kozen\u00ed nebo poru\u0161e. Pro zm\u00edrn\u011bn\u00ed tohoto probl\u00e9mu se po sva\u0159ov\u00e1n\u00ed \u010dasto prov\u00e1d\u00ed PWHT (Post Weld Heat Treating), kter\u00e1 zm\u00edr\u0148uje tepeln\u00e1 nap\u011bt\u00ed v oblasti svaru prost\u0159ednictv\u00edm \u0159\u00edzen\u00e9ho \u017e\u00edh\u00e1n\u00ed p\u0159i n\u00edzk\u00e9 teplot\u011b po del\u0161\u00ed dobu. PWHT lze tak\u00e9 pou\u017e\u00edt v z\u00e1vislosti na typu sva\u0159ov\u00e1n\u00ed a materi\u00e1lu ke kontrole tvrdosti nebo zv\u00fd\u0161en\u00ed pevnosti materi\u00e1lu.<\/p>","protected":false},"excerpt":{"rendered":"

Tepeln\u00e9 zpracov\u00e1n\u00ed po sva\u0159ov\u00e1n\u00ed je standardn\u00ed a povinn\u00fd proces v ropn\u00e9m, plyn\u00e1rensk\u00e9m a petrochemick\u00e9m pr\u016fmyslu, kter\u00fd sni\u017euje zbytkov\u00e1 nap\u011bt\u00ed vznikaj\u00edc\u00ed p\u0159i sva\u0159ov\u00e1n\u00ed ocelov\u00fdch sou\u010d\u00e1st\u00ed. Pr\u016fmyslov\u00e9 p\u0159edpisy mohou vy\u017eadovat testov\u00e1n\u00ed v z\u00e1vislosti na chemick\u00e9m slo\u017een\u00ed a tlou\u0161\u0165ce testovan\u00e9ho materi\u00e1lu, p\u0159i\u010dem\u017e testov\u00e1n\u00ed rovn\u011b\u017e zaji\u0161\u0165uje optim\u00e1ln\u00ed mechanick\u00e9 a metalurgick\u00e9 vlastnosti. Definice po sva\u0159ov\u00e1n\u00ed ... <\/p>\n

P\u0159e\u010dt\u011bte si v\u00edce “What Is Post Weld Heat Treatment?”<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-57","post","type-post","status-publish","format-standard","hentry","category-pwht-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/pwhtsolutions.net\/cs\/wp-json\/wp\/v2\/posts\/57","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pwhtsolutions.net\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pwhtsolutions.net\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pwhtsolutions.net\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pwhtsolutions.net\/cs\/wp-json\/wp\/v2\/comments?post=57"}],"version-history":[{"count":1,"href":"https:\/\/pwhtsolutions.net\/cs\/wp-json\/wp\/v2\/posts\/57\/revisions"}],"predecessor-version":[{"id":58,"href":"https:\/\/pwhtsolutions.net\/cs\/wp-json\/wp\/v2\/posts\/57\/revisions\/58"}],"wp:attachment":[{"href":"https:\/\/pwhtsolutions.net\/cs\/wp-json\/wp\/v2\/media?parent=57"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pwhtsolutions.net\/cs\/wp-json\/wp\/v2\/categories?post=57"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pwhtsolutions.net\/cs\/wp-json\/wp\/v2\/tags?post=57"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}