{"id":17010,"date":"2022-01-26T15:08:08","date_gmt":"2022-01-26T15:08:08","guid":{"rendered":"https:\/\/pragmandt.com\/application-automotive\/"},"modified":"2024-01-29T16:12:49","modified_gmt":"2024-01-29T16:12:49","slug":"application-automotive","status":"publish","type":"page","link":"https:\/\/pragmandt.com\/fr\/application-automotive\/","title":{"rendered":"Application – Automobile"},"content":{"rendered":"

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Application<\/span>\u00a0> Automobile<\/a><\/span><\/span><\/p>\n

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Automobile<\/span><\/span><\/h1>\n

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Solutions compl\u00e8tes pour le CND dans l\u2019industrie automobile<\/span><\/h6>\n

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Contexte<\/span><\/span><\/h2>\n

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Les aciers \u00e0 haute et ultra haute r\u00e9sistance sont largement utilis\u00e9s dans la fabrication de composants de carrosserie de voiture, en particulier lorsqu\u2019il est question de s\u00e9curit\u00e9 en cas de collision. De tels composants doivent r\u00e9pondre \u00e0 des exigences \u00e9lev\u00e9es en termes de r\u00e9sistance, et de r\u00e9sistance aux collisions.
\nLa soudure de ces composants est consid\u00e9r\u00e9e comme un d\u00e9fi en raison de leur structure martensitique et de leur rigidit\u00e9 \u00e9lev\u00e9e, ce qui peut entra\u00eener divers d\u00e9fauts dans les joints soud\u00e9s.
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D\u00e9fis<\/span><\/span><\/h2>\n

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Les pi\u00e8ces de voiture qui doivent \u00eatre inspect\u00e9es varient en forme, en \u00e9paisseur et en \u00e9tat de surface. Elles sont g\u00e9om\u00e9triquement complexes, tant \u00e0 l’ext\u00e9rieur qu’\u00e0 l’int\u00e9rieur. De plus, les mat\u00e9riaux et les processus d’assemblage varient \u00e9norm\u00e9ment, ce qui ajoute \u00e0 la complexit\u00e9 des tests de contr\u00f4le de qualit\u00e9.<\/span>
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Soudure par points de r\u00e9sistance<\/span><\/span><\/h2>\n

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Les tests ultrasonores classiques ont \u00e9t\u00e9 un pilier pour l’\u00e9valuation des soudures par points. Cette m\u00e9thode, comme beaucoup d’autres, a ses complexit\u00e9s car elle n\u00e9cessite un plan d’inspection minutieux et un positionnement pr\u00e9cis de la sonde par rapport au noyau de soudure pour une \u00e9valuation correcte. Les ultrasons multi\u00e9l\u00e9ments (Phased Array) simplifient ce processus avec une empreinte plus large et une vue d’ensemble instantan\u00e9e de l’ensemble du noyau de soudure (C-Scan), permettant un dimensionnement correct dudit noyau de soudure. Cela est consid\u00e9rablement moins exigeant pour l’op\u00e9rateur et il est \u00e9galement tout \u00e0 fait possible d’automatiser l’ensemble du processus, ce qui augmente la fiabilit\u00e9 et la coh\u00e9rence des r\u00e9sultats.<\/span><\/p>\n

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