{"id":5449,"date":"2023-08-01T11:27:30","date_gmt":"2023-08-01T09:27:30","guid":{"rendered":"https:\/\/test.lang-und-heyne.de\/craftsmanship\/bluing\/"},"modified":"2025-04-07T12:15:42","modified_gmt":"2025-04-07T10:15:42","slug":"bluing","status":"publish","type":"page","link":"https:\/\/luh.zzagenturweb.de\/en\/craftsmanship\/bluing\/","title":{"rendered":"Bluing"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"","protected":false},"author":5,"featured_media":1132,"parent":3025,"menu_order":45,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-5449","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":{"slide":[{"bild__video":true,"bild":{"ID":4876,"id":4876,"title":"LH_Header_Schrauben","filename":"LH_Header_Schrauben.jpg","filesize":378266,"url":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Header_Schrauben.jpg","link":"https:\/\/luh.zzagenturweb.de\/en\/craftsmanship\/bluing\/lh_header_schrauben-2\/","alt":"","author":"5","description":"","caption":"","name":"lh_header_schrauben-2","status":"inherit","uploaded_to":5449,"date":"2023-08-01 08:23:06","modified":"2024-02-05 11:10:32","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/luh.zzagenturweb.de\/wp-includes\/images\/media\/default.png","width":1920,"height":1000,"sizes":{"thumbnail":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Header_Schrauben-150x150.jpg","thumbnail-width":150,"thumbnail-height":150,"medium":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Header_Schrauben-300x156.jpg","medium-width":300,"medium-height":156,"medium_large":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Header_Schrauben-768x400.jpg","medium_large-width":768,"medium_large-height":400,"large":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Header_Schrauben-1024x533.jpg","large-width":1024,"large-height":533,"1536x1536":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Header_Schrauben-1536x800.jpg","1536x1536-width":1536,"1536x1536-height":800,"2048x2048":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Header_Schrauben.jpg","2048x2048-width":1920,"2048x2048-height":1000,"post-thumbnail":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Header_Schrauben-150x150.jpg","post-thumbnail-width":150,"post-thumbnail-height":150,"wide":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Header_Schrauben-1400x729.jpg","wide-width":1400,"wide-height":729}},"video":false,"texte":{"text":"Hardening and Tempering of Steel","subline":"The Magic of Fire"}}],"start":[{"acf_fc_layout":"textbild","header":"Hardening: A Step Toward Durability","anchor":false,"order":false,"bigtext":false,"bild":{"ID":4923,"id":4923,"title":"LH_Kachel_Georg-Schrauben","filename":"LH_Kachel_Georg-Schrauben.jpg","filesize":313965,"url":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_Georg-Schrauben.jpg","link":"https:\/\/luh.zzagenturweb.de\/en\/craftsmanship\/bluing\/lh_kachel_georg-schrauben-2\/","alt":"","author":"5","description":"","caption":"","name":"lh_kachel_georg-schrauben-2","status":"inherit","uploaded_to":5449,"date":"2023-08-01 11:01:55","modified":"2024-02-05 11:10:32","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/luh.zzagenturweb.de\/wp-includes\/images\/media\/default.png","width":1000,"height":705,"sizes":{"thumbnail":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_Georg-Schrauben-150x150.jpg","thumbnail-width":150,"thumbnail-height":150,"medium":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_Georg-Schrauben-300x212.jpg","medium-width":300,"medium-height":212,"medium_large":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_Georg-Schrauben-768x541.jpg","medium_large-width":768,"medium_large-height":541,"large":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_Georg-Schrauben.jpg","large-width":1000,"large-height":705,"1536x1536":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_Georg-Schrauben.jpg","1536x1536-width":1000,"1536x1536-height":705,"2048x2048":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_Georg-Schrauben.jpg","2048x2048-width":1000,"2048x2048-height":705,"post-thumbnail":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_Georg-Schrauben-150x150.jpg","post-thumbnail-width":150,"post-thumbnail-height":150,"wide":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_Georg-Schrauben.jpg","wide-width":1000,"wide-height":705}},"sub":"","text":"The targeted heat treatment of steel alloys opens fascinating possibilities for increasing hardness. In traditional watchmaking, hardening carbon steel through annealing and quenching is a proven process. At Lang & Heyne, we celebrate this traditional technique that our ancestors mastered.","link":"","target":"","zusatzbild":false,"bild2":false,"ausrichtung":false,"sub2":""},{"acf_fc_layout":"text","text":"

The Process of Hardening<\/h2>\n

The journey begins with heating the steel part until it glows cherry red. In the past, this heat was generated by a charcoal fire, often accompanied by a blowpipe to achieve the required temperature. Rapid cooling through water, oil, or even mercury imparts the steel with its characteristic glass hardness.<\/p>\n

Modern times have brought forth special electric furnaces that, under a protective gas atmosphere, ensure even glowing and prevent scaling. The final quenching process typically uses oil.<\/p>\n"},{"acf_fc_layout":"testimonial","bild_links":{"ID":5429,"id":5429,"title":"LH_MA_MarkE","filename":"LH_MA_MarkE.jpg","filesize":440935,"url":"https:\/\/luh.zzagenturweb.de\/dateien\/2024\/02\/LH_MA_MarkE.jpg","link":"https:\/\/luh.zzagenturweb.de\/en\/craftsmanship\/bluing\/lh_ma_marke-2\/","alt":"","author":"5","description":"","caption":"","name":"lh_ma_marke-2","status":"inherit","uploaded_to":5449,"date":"2024-02-05 08:36:28","modified":"2024-02-05 11:10:32","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/luh.zzagenturweb.de\/wp-includes\/images\/media\/default.png","width":860,"height":1000,"sizes":{"thumbnail":"https:\/\/luh.zzagenturweb.de\/dateien\/2024\/02\/LH_MA_MarkE-150x150.jpg","thumbnail-width":150,"thumbnail-height":150,"medium":"https:\/\/luh.zzagenturweb.de\/dateien\/2024\/02\/LH_MA_MarkE-258x300.jpg","medium-width":258,"medium-height":300,"medium_large":"https:\/\/luh.zzagenturweb.de\/dateien\/2024\/02\/LH_MA_MarkE-768x893.jpg","medium_large-width":768,"medium_large-height":893,"large":"https:\/\/luh.zzagenturweb.de\/dateien\/2024\/02\/LH_MA_MarkE.jpg","large-width":860,"large-height":1000,"1536x1536":"https:\/\/luh.zzagenturweb.de\/dateien\/2024\/02\/LH_MA_MarkE.jpg","1536x1536-width":860,"1536x1536-height":1000,"2048x2048":"https:\/\/luh.zzagenturweb.de\/dateien\/2024\/02\/LH_MA_MarkE.jpg","2048x2048-width":860,"2048x2048-height":1000,"post-thumbnail":"https:\/\/luh.zzagenturweb.de\/dateien\/2024\/02\/LH_MA_MarkE-150x150.jpg","post-thumbnail-width":150,"post-thumbnail-height":150,"wide":"https:\/\/luh.zzagenturweb.de\/dateien\/2024\/02\/LH_MA_MarkE.jpg","wide-width":860,"wide-height":1000}},"zitat":"Precision and timing transform functional screws into aesthetic masterpieces.","autor":"Mark E., Finisher","seitenverkehrt":false,"smalltext":true,"bild_oder_animiertes_gif":false,"bild_rechts":false,"bild_rechts_gif":{"ID":5533,"id":5533,"title":"LH_Kachel_Blaeuen","filename":"LH_Kachel_Blaeuen.mp4","filesize":1400128,"url":"https:\/\/luh.zzagenturweb.de\/dateien\/2024\/02\/LH_Kachel_Blaeuen.mp4","link":"https:\/\/luh.zzagenturweb.de\/en\/craftsmanship\/bluing\/lh_kachel_blaeuen-2\/","alt":"","author":"5","description":"","caption":"","name":"lh_kachel_blaeuen-2","status":"inherit","uploaded_to":5449,"date":"2024-02-28 08:47:27","modified":"2024-02-28 08:47:27","menu_order":0,"mime_type":"video\/mp4","type":"video","subtype":"mp4","icon":"https:\/\/luh.zzagenturweb.de\/wp-includes\/images\/media\/video.png","width":850,"height":600},"extrabild":false,"detail":false,"additionalinfo":false,"zusatzinfo":{"text":"","link":null,"linktext":""}},{"acf_fc_layout":"text","text":"

Tempering: Between Hardness and Toughness<\/h2>\n

After hardening, the steel becomes glass-hard and too brittle for most applications. Reheating reduces its hardness while increasing toughness, a process known as tempering. When done manually over a flame, patience is required to ensure even heat distribution within the material. If the surface has been previously ground or polished, an oxide layer forms in the air, changing color with temperature. As the temperature rises, the steel initially turns yellow, then transitions through brown, violet, cornflower blue, to light blue and gray. Today, industrial hardening and tempering often occur under protective gas, preventing discoloration.<\/p>\n"},{"acf_fc_layout":"textbild","header":"The Technique of Bluing Screws","anchor":false,"order":true,"bigtext":false,"bild":{"ID":4892,"id":4892,"title":"LH_Kachel_Schrauben-Messingplatte","filename":"LH_Kachel_Schrauben-Messingplatte.jpg","filesize":186302,"url":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_Schrauben-Messingplatte.jpg","link":"https:\/\/luh.zzagenturweb.de\/en\/craftsmanship\/bluing\/lh_kachel_schrauben-messingplatte-2\/","alt":"","author":"5","description":"","caption":"","name":"lh_kachel_schrauben-messingplatte-2","status":"inherit","uploaded_to":5449,"date":"2023-08-01 09:26:36","modified":"2024-02-05 11:10:32","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/luh.zzagenturweb.de\/wp-includes\/images\/media\/default.png","width":1000,"height":705,"sizes":{"thumbnail":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_Schrauben-Messingplatte-150x150.jpg","thumbnail-width":150,"thumbnail-height":150,"medium":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_Schrauben-Messingplatte-300x212.jpg","medium-width":300,"medium-height":212,"medium_large":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_Schrauben-Messingplatte-768x541.jpg","medium_large-width":768,"medium_large-height":541,"large":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_Schrauben-Messingplatte.jpg","large-width":1000,"large-height":705,"1536x1536":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_Schrauben-Messingplatte.jpg","1536x1536-width":1000,"1536x1536-height":705,"2048x2048":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_Schrauben-Messingplatte.jpg","2048x2048-width":1000,"2048x2048-height":705,"post-thumbnail":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_Schrauben-Messingplatte-150x150.jpg","post-thumbnail-width":150,"post-thumbnail-height":150,"wide":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_Schrauben-Messingplatte.jpg","wide-width":1000,"wide-height":705}},"sub":"","text":"Bluing screws is a specialized step in the manufacture of mechanical watches. Before the screws are blued, they undergo several finishing steps, including a meticulous tin polish. They are then thoroughly cleaned to remove all residues, as even the smallest impurities can impair the final outcome. After this careful preparation, we achieve the desired blue hue through controlled heating. High precision and exact timing are crucial to achieve the perfect shade and to conclude the process at the optimal moment.","link":"","target":"","zusatzbild":false,"bild2":false,"ausrichtung":false,"sub2":""},{"acf_fc_layout":"galerie","galerie":[{"bild":{"ID":5416,"id":5416,"title":"LH_Bildergalerie_Schrauben-schlitz","filename":"LH_Bildergalerie_Schrauben-schlitz.jpg","filesize":386875,"url":"https:\/\/luh.zzagenturweb.de\/dateien\/2024\/02\/LH_Bildergalerie_Schrauben-schlitz.jpg","link":"https:\/\/luh.zzagenturweb.de\/en\/craftsmanship\/bluing\/lh_bildergalerie_schrauben-schlitz-2\/","alt":"","author":"5","description":"","caption":"","name":"lh_bildergalerie_schrauben-schlitz-2","status":"inherit","uploaded_to":5449,"date":"2024-02-05 08:21:33","modified":"2024-02-05 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Brass Plate and Brass Shavings<\/h2>\n

In our manufacture, we employ two methods for finishing steel parts: using brass shavings or brass plates with indentations. The method with brass plates is often referred to as the “bluing table” or “bluing plate.” Similar to the method with brass shavings, the brass plate is heated, and the components are placed flat on the indentations. Heating leads to the controlled oxidation of the components, giving them their characteristic blue color.<\/p>\n"},{"acf_fc_layout":"testimonial","bild_links":{"ID":4912,"id":4912,"title":"LH_Kachel_GeorgNah","filename":"LH_Kachel_GeorgNah.jpg","filesize":371763,"url":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_GeorgNah.jpg","link":"https:\/\/luh.zzagenturweb.de\/en\/craftsmanship\/bluing\/lh_kachel_georgnah-2\/","alt":"","author":"5","description":"","caption":"","name":"lh_kachel_georgnah-2","status":"inherit","uploaded_to":5449,"date":"2023-08-01 09:49:34","modified":"2024-02-05 11:10:32","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/luh.zzagenturweb.de\/wp-includes\/images\/media\/default.png","width":860,"height":1000,"sizes":{"thumbnail":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_GeorgNah-150x150.jpg","thumbnail-width":150,"thumbnail-height":150,"medium":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_GeorgNah-258x300.jpg","medium-width":258,"medium-height":300,"medium_large":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_GeorgNah-768x893.jpg","medium_large-width":768,"medium_large-height":893,"large":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_GeorgNah.jpg","large-width":860,"large-height":1000,"1536x1536":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_GeorgNah.jpg","1536x1536-width":860,"1536x1536-height":1000,"2048x2048":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_GeorgNah.jpg","2048x2048-width":860,"2048x2048-height":1000,"post-thumbnail":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_GeorgNah-150x150.jpg","post-thumbnail-width":150,"post-thumbnail-height":150,"wide":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel_GeorgNah.jpg","wide-width":860,"wide-height":1000}},"zitat":"Bluing the hands also enhances the contrast with the white enamel dial for optimal readability.","autor":"","seitenverkehrt":false,"smalltext":true,"bild_oder_animiertes_gif":false,"bild_rechts":false,"bild_rechts_gif":{"ID":4916,"id":4916,"title":"LH_Kachel-Blaeuen-Zeiger","filename":"LH_Kachel-Blaeuen-Zeiger.mp4","filesize":1435871,"url":"https:\/\/luh.zzagenturweb.de\/dateien\/2023\/08\/LH_Kachel-Blaeuen-Zeiger.mp4","link":"https:\/\/luh.zzagenturweb.de\/en\/craftsmanship\/bluing\/lh_kachel-blaeuen-zeiger-2\/","alt":"","author":"5","description":"","caption":"","name":"lh_kachel-blaeuen-zeiger-2","status":"inherit","uploaded_to":5449,"date":"2023-08-01 09:58:50","modified":"2024-02-05 11:10:32","menu_order":0,"mime_type":"video\/mp4","type":"video","subtype":"mp4","icon":"https:\/\/luh.zzagenturweb.de\/wp-includes\/images\/media\/video.png","width":1000,"height":704},"extrabild":false,"detail":false,"additionalinfo":true,"zusatzinfo":{"text":"Hands and hand bushing are finished separately.","link":"","linktext":""}},{"acf_fc_layout":"textbild","header":"Masterful Finishing","anchor":false,"order":true,"bigtext":false,"bild":false,"sub":"","text":"In finishing, the watchmaker's pride and skill shine\u2014his work is an expression of quality. 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