{"id":643277,"date":"2026-01-05T20:39:23","date_gmt":"2026-01-05T20:39:23","guid":{"rendered":"https:\/\/www.europesays.com\/fr\/643277\/"},"modified":"2026-01-05T20:39:23","modified_gmt":"2026-01-05T20:39:23","slug":"firminy-quand-les-grands-canons-de-la-marine-nationale-sortaient-de-la-tour-noire","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/fr\/643277\/","title":{"rendered":"Firminy. Quand les grands canons de la Marine nationale sortaient de la tour noire"},"content":{"rendered":"<p>Elle domine ce qui a \u00e9t\u00e9 jadis l\u2019empire m\u00e9tallurgique des AFY dont il reste encore quelques traces. La tour noire abrite un four vertical d\u2019une profondeur de 33\u00a0m, et une b\u00e2che \u00e0 eau d\u2019une dimension identique et d\u2019un diam\u00e8tre int\u00e9rieur de 2,5 m\u00e8tres.<\/p>\n<p>Le four est desservi par un treuil de 150 tonnes de lev\u00e9e, se d\u00e9pla\u00e7ant uniquement sur l\u2019axe d\u00e9fini par le four et la b\u00e2che \u00e0 eau.<\/p>\n<p>Ces installations ont \u00e9t\u00e9 mises en place pour traiter, \u00e0 l\u2019origine, les grands canons des cuirass\u00e9s et leurs arbres porte-h\u00e9lices. Il s\u2019agissait d\u2019une trempe \u00e0 l\u2019eau.<\/p>\n<p>Tour noire et drapeau rouge en 1968<\/p>\n<p>Plus tard, \u00e0 partir des ann\u00e9es 1950, du fait de l\u2019utilisation d\u2019aciers sp\u00e9ciaux (nickel, chrome\u2026), la trempe \u00e0 l\u2019eau a \u00e9t\u00e9 remplac\u00e9e par la trempe \u00e0 l\u2019huile.<\/p>\n<p>Pour des&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"Elle domine ce qui a \u00e9t\u00e9 jadis l\u2019empire m\u00e9tallurgique des AFY dont il reste encore quelques traces. La&hellip;\n","protected":false},"author":2,"featured_media":643278,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9653],"tags":[1111,11,2430,7539,1777,674,10282,10283,1011,27,937,12,25,4001,104],"class_list":{"0":"post-643277","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-saint-etienne","8":"tag-actu","9":"tag-actualites","10":"tag-auvergne-rhone-alpes","11":"tag-edition-loire-sud","12":"tag-eu","13":"tag-europe","14":"tag-firminy","15":"tag-firminy-ville","16":"tag-fr","17":"tag-france","18":"tag-histoire","19":"tag-news","20":"tag-republique-francaise","21":"tag-saint-etienne","22":"tag-societe"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@fr\/115844426268845641","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/posts\/643277","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/comments?post=643277"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/posts\/643277\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/media\/643278"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/media?parent=643277"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/categories?post=643277"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/tags?post=643277"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}