{"id":1254,"date":"2025-02-06T12:54:49","date_gmt":"2025-02-06T11:54:49","guid":{"rendered":"https:\/\/srsc.rs\/fr\/?page_id=1254"},"modified":"2025-03-25T13:48:03","modified_gmt":"2025-03-25T12:48:03","slug":"texturation-au-rouleau-technologie","status":"publish","type":"page","link":"https:\/\/srsc.rs\/fr\/texturation-au-rouleau-technologie\/","title":{"rendered":"Texturation au rouleau Technologie"},"content":{"rendered":"\t\t
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\n\t\t\tServices<\/span>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Texturation au rouleau<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Le service de texturation des rouleaux repr\u00e9sente un processus de modification de la structure interne du mat\u00e9riau m\u00e9tallique ou de la structure de surface du mat\u00e9riau de la pi\u00e8ce (rouleau de travail des lignes de laminoir de finition) par des d\u00e9charges \u00e9lectriques contr\u00f4l\u00e9es o\u00f9 des impulsions \u00e9lectriques sont g\u00e9n\u00e9r\u00e9es entre une \u00e9lectrode et un rouleau de travail, ce qui entra\u00eene la formation de crat\u00e8res microniques et de creux sur sa surface.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tTechnologie<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tCaract\u00e9ristiques techniques<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tTypes de machines EDT<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Technologie<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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En g\u00e9n\u00e9ral, aujourd’hui, on utilise dans le monde quatre techniques de base de texturation, respectivement de modification de la texture de la surface du m\u00e9tal, ou plus pr\u00e9cis\u00e9ment des cylindres de travail en acier :<\/p>

1. Texturation par grenaillage \/ SBT<\/strong> \u2013 le cylindre de travail tourne autour de son axe et est plac\u00e9 dans une chambre ferm\u00e9e o\u00f9 il est expos\u00e9 au bombardement de billes d’acier (appel\u00e9es chevrotine) sous l’influence d’une roue de rotation centrifuge, provoquant ainsi une d\u00e9formation plastique de la structure de surface du cylindre de travail. La rugosit\u00e9 est obtenue dans la plage de Ra=1,5\u20136,0 microns et peut \u00eatre contr\u00f4l\u00e9e par la vitesse de rotation de la roue centrifuge ou par la vitesse de rotation du cylindre lui-m\u00eame, mais la qualit\u00e9 de cette m\u00e9thode d\u00e9pend en grande partie de la duret\u00e9 du cylindre.<\/p>

2. EDT \/ Electro Discharge Texturing<\/strong> \u2013 dans cette m\u00e9thode dite de Modifications de Textures par D\u00e9charges \u00c9lectriques, le rouleau de travail tourne autour de son axe et est plac\u00e9 dans un r\u00e9servoir avec une huile di\u00e9lectrique qui est sur un c\u00f4t\u00e9 ou sur les deux c\u00f4t\u00e9s longitudinaux du rouleau plac\u00e9 un ensemble d’\u00e9lectrodes \u00e0 travers lesquelles l’\u00e9nergie \u00e9lectrique avec une force ad\u00e9quate passe et devient expos\u00e9e \u00e0 une influence des impulsions \u00e9lectriques sous forme d’\u00e9tincelles qui \u00e9rodent la surface du rouleau en formant des micro-crat\u00e8res qui sont caract\u00e9ris\u00e9s par la forme et la hauteur des pics respectivement les pics et les creux du crat\u00e8re. Par rapport \u00e0 la m\u00e9thode de grenaillage du m\u00e9tal, la m\u00e9thode EDT permet d’obtenir un nombre de pics plus \u00e9lev\u00e9 ainsi qu’une fr\u00e9quence de r\u00e9p\u00e9tition du processus plus \u00e9lev\u00e9e et une large gamme de rugosit\u00e9 de surface (Ra = 0\u201315 microns).<\/p>

3. LT \/ Texturation par laser<\/strong> \u2013 le faisceau laser est dirig\u00e9 par le foyer sur le cylindre du cylindre de travail, de sorte qu’une roue rotative h\u00e9lico\u00efdale, par sa rotation et le positionnement des lames, interrompt le faisceau de sorte que le laser fonctionne par intermittence et ainsi, dans un environnement contr\u00f4l\u00e9, fait fondre un point d’impact sur la surface du cylindre en cr\u00e9ant des crat\u00e8res appropri\u00e9s avec des pics et des creux. Le m\u00e9tal qui est fondu sous l’influence du laser est drain\u00e9 par le plasma et sous l’influence du gaz inerte (O2, CO2, Ar). Cette technologie permet de contr\u00f4ler la disposition des crat\u00e8res ainsi que diverses combinaisons de taille des pics et de forme des creux, ce qui permet d’obtenir diff\u00e9rentes combinaisons contr\u00f4l\u00e9es de valeurs de rugosit\u00e9.<\/p>

4. EBT \/ Texturation par faisceau d’\u00e9lectrons<\/strong> \u2013 cette m\u00e9thode utilise un faisceau d’\u00e9lectrons tr\u00e8s puissant qui, dans un environnement sous vide \u00e0 travers la lentille correspondante, agit sur un cylindre de travail qui tourne autour de son axe et avance progressivement, cr\u00e9ant ainsi des microcrat\u00e8res avec un bord m\u00e9tallique. Le proc\u00e9d\u00e9 peut \u00eatre r\u00e9p\u00e9t\u00e9 ind\u00e9finiment avec une pr\u00e9cision extr\u00eamement \u00e9lev\u00e9e, ce qui permet de cr\u00e9er les deux types de textures \u2013 texture d\u00e9terministe et texture pseudo-stochastique.<\/p>

5. ECD \/ Electro Chemical Deposition<\/strong> \u2013 cette m\u00e9thode brevet\u00e9e par la soci\u00e9t\u00e9 germano-suisse TOPOCROM\uf0ae est en fait bas\u00e9e sur un proc\u00e9d\u00e9 \u00e9lectrochimique classique d’application de chromage dur, \u00e0 la diff\u00e9rence qu’ici les param\u00e8tres du processus de chromage sont contr\u00f4l\u00e9s par un ordinateur en combinant la rugosit\u00e9 requise et le nombre de pics correspondant. Avec cette m\u00e9thode, il est possible d’obtenir une rugosit\u00e9 dans la plage Ra = 0,5 \u2013 12 microns ou un nombre de pics Pc = 100 l\/cm.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Les m\u00e9thodes telles que SBT, EDT et ECD appartiennent au groupe des m\u00e9thodes \u00ab stochastiques \u00bb qui permettent d’obtenir des crat\u00e8res microm\u00e9triques de forme irr\u00e9guli\u00e8re sur le cylindre de travail, tandis que les m\u00e9thodes telles que LT et EBT appartiennent au groupe des m\u00e9thodes \u00ab d\u00e9terministes \u00bb qui permettent d’obtenir des crat\u00e8res microm\u00e9triques de forme r\u00e9guli\u00e8re et appropri\u00e9e.<\/p>

En fait, de toutes les m\u00e9thodes ci-dessus, seules les m\u00e9thodes EDT, EBT et LT repr\u00e9sentent une am\u00e9lioration significative de la m\u00e9thode SBT, d\u00e9sormais obsol\u00e8te, du point de vue de la stabilit\u00e9 de la rugosit\u00e9, de la qualit\u00e9 de la texture ondulante, puis du haut niveau de formage dans les presses d’emboutissage profond, ainsi que de l’aspect de la couleur appliqu\u00e9e \u00e0 la t\u00f4le d’acier lamin\u00e9e \u00e0 froid qui est obligatoirement trait\u00e9e par les cylindres de travail textur\u00e9s utilis\u00e9s pour fabriquer des bandes d’acier pour le formage de carrosseries automobiles.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Services Texturation au rouleau Le service de texturation des rouleaux repr\u00e9sente un processus de modification de la structure interne du mat\u00e9riau m\u00e9tallique ou de la structure de surface du mat\u00e9riau de la pi\u00e8ce (rouleau de travail des lignes de laminoir de finition) par des d\u00e9charges \u00e9lectriques contr\u00f4l\u00e9es o\u00f9 des impulsions \u00e9lectriques sont g\u00e9n\u00e9r\u00e9es entre une […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"rank_math_lock_modified_date":false,"footnotes":""},"class_list":["post-1254","page","type-page","status-publish","hentry"],"rankMath":{"parentDomain":"srsc.rs","noFollowDomains":[],"noFollowExcludeDomains":[],"noFollowExternalLinks":false,"featuredImageNotice":"L\u2019image en vedette devrait \u00eatre au moins 200 par 200 pixels pour \u00eatre utilis\u00e9 par Facebook et d\u2019autres sites de 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