{"id":3264,"count":6,"description":"\r\n\r\n\r\n\r\nOBTENEZ DES INFORMATIONS SUR LES FONTES FORG\u00c9ES ET LES FONTES<\/strong><\/a>\r\n\r\n\r\n\r\n\r\n

Forg\u00e9<\/h2>\r\n\r\n\r\n\r\n\r\nLe forgeage fait r\u00e9f\u00e9rence \u00e0 un processus dans lequel un mat\u00e9riau est g\u00e9n\u00e9ralement chauff\u00e9, tout en conservant un \u00e9tat solide, puis forc\u00e9 \u00e0 prendre la forme souhait\u00e9e. Maintenant, pour mieux expliquer, nous devons mettre nos chapeaux d\u2019ing\u00e9nierie des mat\u00e9riaux.\r\n\r\n\r\n\r\n\r\n\r\nLes m\u00e9taux ont une structure cristalline. Vous pouvez le consid\u00e9rer comme du bois. Le bois a des grains et ces grains sont orient\u00e9s selon un certain motif. La r\u00e9sistance du bois d\u00e9pend donc de la fa\u00e7on dont les grains sont orient\u00e9s. Par exemple, il est beaucoup plus facile de briser une b\u00fbche pour faire du bois de chauffage lorsque les grains sont orient\u00e9s verticalement. Le m\u00e9tal est de la m\u00eame mani\u00e8re. Si vous examinez le m\u00e9tal au microscope, il aura les m\u00eames grains que ceux que vous associez au bois.\r\n\r\n\r\n\r\n\r\n\r\nLors de la formation de lingots m\u00e9talliques, une attention particuli\u00e8re est port\u00e9e \u00e0 la cr\u00e9ation d\u2019une structure cristalline uniforme et coh\u00e9rente. Les tailles de grains sont similaires et s'\u00e9coulent ensemble. Comme indiqu\u00e9 pr\u00e9c\u00e9demment, cela maximise la r\u00e9sistance, la consistance et la durabilit\u00e9 du m\u00e9tal.\r\n\r\n\r\n\r\n\r\n\r\nNow when you forge something out of that metal ingot, you heat the ingot to make it malleable but not enough to break apart the crystalline grain structure. Think of a blacksmith. Blacksmiths heat metal till it's red hot and then form it on an anvil. This is forging. You do not see them melting the metal into a liquid. By keeping the metal, solid throughout the entire process, it ends up being a much stronger object. Therefore, swords, knives, etc. have historically been forged.\r\n\r\n\r\n\r\n\r\n

Fers moul\u00e9s<\/h2>\r\n\r\n\r\n\r\n\r\nCouler un objet n\u00e9cessite de construire un moule et d'y verser du m\u00e9tal liquide. Ce proc\u00e9d\u00e9 est g\u00e9nial, car il permet une fabrication facile et la cr\u00e9ation de pi\u00e8ces complexes avec des chambres creuses comme avec un bloc moteur d'un v\u00e9hicule. Le fabricant peut utiliser un mat\u00e9riau fusible tel que de la cire dans un moule en sable pour former ces formes complexes.\r\n\r\n\r\n\r\n\r\n\r\nMalheureusement, une fois que le m\u00e9tal devient liquide, la structure des grains cristallins se d\u00e9compose. \u00c0 mesure qu'un objet moul\u00e9 nouvellement form\u00e9 refroidit et redevient solide, la structure du grain se reforme, mais cette fois de mani\u00e8re beaucoup plus al\u00e9atoire et incoh\u00e9rente. Il existe \u00e9galement un risque que l\u2019air emprisonn\u00e9 cr\u00e9e des points faibles. Le m\u00e9tal ressemble davantage \u00e0 un panneau de particules ou \u00e0 un carton en termes de structure qu'\u00e0 un morceau de bois normal.\r\n\r\n\r\n\r\n\r\n\r\nEst-ce que cela affaiblit les pi\u00e8ces moul\u00e9es\u00a0? Absolument pas. Au cours des deux derniers milliers d\u2019ann\u00e9es, les humains sont devenus tr\u00e8s dou\u00e9s dans la fabrication de pi\u00e8ces en m\u00e9tal moul\u00e9. Les trous de ventilation, la pression sous vide et d'autres avanc\u00e9es augmentent la qualit\u00e9 du m\u00e9tal coul\u00e9. Comme indiqu\u00e9, le m\u00e9tal moul\u00e9 est la mati\u00e8re \u00e0 partir de laquelle les blocs moteurs de v\u00e9hicules sont fabriqu\u00e9s et sont cens\u00e9s r\u00e9sister \u00e0 des contraintes et des contraintes extr\u00eames.\r\n\r\n\r\n\r\n\r\n

Processus de fabrication des fontes forg\u00e9es ou en fonte<\/h2>\r\n\r\n\r\n\r\n\r\nThe first thing to know is that \"cast\" and \"forged\" are nothing more than terms describing the manufacturing process of iron or a set of irons.\r\n\r\n\r\n\r\n\r\n\r\nThe casting process: When a golf iron is cast, the metal used to make the iron is heated to its melting point, becoming a liquid. It is then poured into the molds of the iron heads. When it cools and hardens, voila, you have golf irons.\r\nThe forging process: When a golf iron is forged, the solid metal of the club head is literally pounded or compressed until it takes the desired shape. After that, a number of other drilling and machining steps take place to finish the manufacturing process.\r\n\r\n\r\n\r\n\r\n

Le forgeage est plus fort que le moulage.<\/h2>\r\n\r\n\r\n\r\n\r\nL\u2019une des principales raisons pour lesquelles nous choisissons de fournir des services de forgeage est qu\u2019ils fournissent un produit final plus solide \u00e0 nos partenaires. Selon une \u00e9tude r\u00e9alis\u00e9e par le D\u00e9partement d'ing\u00e9nierie industrielle et manufacturi\u00e8re de l'Universit\u00e9 de Tol\u00e8de\u00a0:\r\n\r\n\r\n\r\n\r\n
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  • Les pi\u00e8ces forg\u00e9es avaient une r\u00e9sistance \u00e0 la traction 26% sup\u00e9rieure \u00e0 celle des m\u00eames pi\u00e8ces moul\u00e9es.<\/li>\r\n \t
  • Les pi\u00e8ces forg\u00e9es avaient une r\u00e9sistance \u00e0 la fatigue 37% sup\u00e9rieure, ce qui se traduisait par une dur\u00e9e de vie beaucoup plus longue que les pi\u00e8ces moul\u00e9es.<\/li>\r\n \t
  • La fonte n'avait que 66% de la limite d'\u00e9lasticit\u00e9 de l'acier forg\u00e9, une mesure qui indique la quantit\u00e9 de charge que le m\u00e9tal peut supporter avant de se d\u00e9former.<\/li>\r\n \t
  • Les pi\u00e8ces forg\u00e9es pr\u00e9sentaient une r\u00e9duction de 58% dans la zone lorsqu'elles \u00e9taient tir\u00e9es jusqu'\u00e0 la rupture, par rapport \u00e0 une r\u00e9duction de 6% pour les pi\u00e8ces moul\u00e9es. Cela signifie que les pi\u00e8ces forg\u00e9es permettent une d\u00e9formation beaucoup plus importante avant rupture que les pi\u00e8ces coul\u00e9es.<\/li>\r\n<\/ul>\r\n","link":"https:\/\/zecovalve.com\/fr\/tag\/forged-vs-cast-irons","name":"Fers forg\u00e9s ou fontes","slug":"forged-vs-cast-irons","taxonomy":"post_tag","meta":[],"yoast_head":"\nForged vs Cast Irons - Forged Irons vs Cast Irons Valve | ZECO Valve<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zecovalve.com\/fr\/tag\/forged-vs-cast-irons\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Forged vs Cast Irons - Forged Irons vs Cast Irons Valve | ZECO Valve\" \/>\n<meta property=\"og:description\" content=\"GET FORGED VS CAST IRONS INFORMATION Forged Forging refers to a process in which a material is usually heated, while maintaining a solid state, and then forced into the shape desired. Now to explain better, we must put on our material engineering hats. Metals have a crystalline structure. You can think of it like wood. Wood has grains and those grains are oriented in a certain pattern. Therefore, the strength of wood depends on how those grains are oriented. For example, it is much easier to splinter a log for firewood when the grains are oriented vertically. Metal is the same way. If you examine metal under a microscope it will have the same grains that you associate with wood. When metal ingots are formed, special attention is made to creating a uniform and consistent crystalline structure. The grain sizes are similar and flow together. As previously stated, this maximizes the strength, consistency, and durability of the metal. Now when you forge something out of that metal ingot, you heat the ingot to make it malleable but not enough to break apart the crystalline grain structure. Think of a blacksmith. Blacksmiths heat metal till it’s red hot and then form it on an anvil. This is forging. You do not see them melting the metal into a liquid. By keeping the metal, solid throughout the entire process, it ends up being a much stronger object. Therefore, swords, knives, etc. have historically been forged. Cast Irons Casting an object requires building a mold and pouring liquid metal into it. This process is great, as it allows for easy manufacturing and the creation of complex parts with hollow chambers such as with an engine block of a vehicle. The manufacturer can use a meltable material such as wax inside a sand mold to form these complex shapes. Unfortunately, once the metal becomes a liquid the crystalline grain structure breaks down. As a newly formed cast object cools down and becomes solid again, the grain structure reforms but this time much more randomly and inconsistently. There also is the potential for trapped air to create weak points. The metal becomes more like particle board or cardboard in terms of structure than a normal piece of wood. Now does this make cast parts weak? Absolutely not. Over the past couple thousand years, humans have gotten pretty good at making cast metal parts. Ventilation holes, vacuum pressure, and other advances increase the quality of cast metal. As stated, cast metal is what vehicle engine blocks are made from those are expected to withstand extreme stress and strain. Manufacturing Process Forged vs Cast Irons The first thing to know is that “cast” and “forged” are nothing more than terms describing the manufacturing process of iron or a set of irons. The casting process: When a golf iron is cast, the metal used to make the iron is heated to its melting point, becoming a liquid. It is then poured into the molds of the iron heads. When it cools and hardens, voila, you have golf irons. The forging process: When a golf iron is forged, the solid metal of the club head is literally pounded or compressed until it takes the desired shape. After that, a number of other drilling and machining steps take place to finish the manufacturing process. Forging is stronger than casting. One of the main reasons we choose to provide forging services is that it provides a stronger end product for our partners. According to a study performed by the Industrial & Manufacturing Engineering Department at the University of Toledo: Forged parts had a 26% higher tensile strength than the same cast parts. Forged parts had a 37% higher fatigue strength resulting in a much longer lifespan than cast parts. Cast iron only had 66% of the yield strength of forged steel, a measurement that indicates the load amount metal can hold before deforming. The forged parts had a 58% reduction in the area when pulled to failure, compared to a 6% reduction for cast parts. 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