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Difference between Casting and Forging

The above presentation is a brief explanation of casting and forging. Have a look to know more about it.

AmandaConroy
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Difference between Casting and Forging

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  1. Difference between Casting and Forging

  2. Casting Casting is the process where metal is heated until molten. While in the molten or liquid state it is poured into a mold or vessel to create a desired shape.

  3. Forging Forging is the application of thermal and mechanical energy to steel billets or ingots to cause the material to change shape while in a solid state.

  4. Why use Casting? • The advantages of casting include: • No real upper size limit in casting weight • Large range of alloy choices • As forgings remain solid, custom alloys are far more difficult to get into production whereas with casting, alloys including Chrome, Nickel and Moly can be added at the molten stage. • Tooling is often less expensive than forge dies • Smaller production “runs” required • Complicated/complex parts are no problem

  5. Why use Forging? • The advantages of forging include: • Generally tougher than alternatives • Will handle impact better than castings • The nature of forging excludes the occurence of porosity, shrinkage, cavities and cold pour issues. • The tight grain structure of forgings making it mechanically strong. There is less need for expensive alloys to attain high strength components. • The tight grain structure offers great wear resistance without the need to make products “superhard” We have found that, on a blank HRC 38-42 forged grinder insert wear/wash is about the same as a high alloy HRC 46-50 cast grinder insert. The difference being a HRC 46-50 casting does not have the ductility to handle high impact grinding.

  6. How better is Forging than Casting Based on a Study conducted: Forged parts had a 26% higher tensile strength than the cast parts. This means you can have stronger shackles at a lower part weight. Forged parts have a 37% higher fatigue strength resulting in a factor of six longer fatigue life. This means that a forged shackle is going to last longer. Cast iron only has 66% of the yield strength of forged steel. Yield strength is an indicator of what load a shackle will hold before starting to deform. The forged parts had a 58% reduction in area when pulled to failure. The cast parts only had a 6% reduction in area. That means there would be much greater deformation before failure in a forged part.

  7. Thank You For Watching Hope You Like It Wish to know more? Visit us at: http://www.patriotforge.com/

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