Traditionally, flame cutting a ring from plate is not always adoptable or economical if there are specific material requirements. However, a custom forged ring can solve the problems. It allows greater versatility and improved quality while reducing material cost. First of all, the forging process moves and shapes material to fixed ring size with little material lost. Secondly, the required ring thickness has no effect on the virtually limitless combinations of sizes and grades available. In addition, with a custom forged ring, the porosity and laminations encountered in plate can be eliminated. Finally, the forged ring embodies the features of strength, toughness, and fatigue resisitance.
Forging is a manufacturing process involving the shaping of metal using localized compressive forces. Forging is often classified according to the temperature at which it is performed: '"cold," "warm," or "hot" forging. Forged parts such as forged ring can range in weight from less than a kilogram to 580 metric tons. Forged parts usually require further processing to achieve a finished part.
Forging can produce a piece that is stronger than an equivalent cast or machined part. As the metal is shaped during the forging process, its internal grain deforms to follow the general shape of the part. As a result, the grain is continuous throughout the part, giving rise to a piece with improved strength characteristics. Some metals may be forged cold, but iron and steel are almost always hot forged. Hot forging prevents the work hardening that would result from cold forging, which would increase the difficulty of performing secondary machining operations on the piece. Also, while work hardening may be desirable in some circumstances, other methods of hardening the piece, such as heat treating, are generally more economical and more controllable. Alloys that are amenable to precipitation hardening, such as most aluminium alloys and titanium, can be hot forged, followed by hardening.
No comments:
Post a Comment