Compare Casting vs Forging
Compare Casting vs Forging - metallurgical defects, dendritic structures, alloy segregations, and Open-die - Queen City Forging - Custom Forging.
Compare Forging...
|
to Casting
|
| Stronger. |
Casting cannot obtain the strengthening effects of hot and cold working. Whether open or closed die forging is used, the forging process surpasses casting in predictable strength properties - producing superior strength that is assured, part to part. |
| Defects refined in preworking. |
A casting has neither grain flow nor directional strength and the process cannot prevent formation of certain metallurgical defects. Preworking forge stock produces a grain flow oriented in directions requiring maximum strength. Dendritic structures, alloy segregations and like imperfections are refined in forging. |
| More reliable, less costly. |
Casting defects occur in a variety of forms. Because hot forging refines grain pattern and imparts high strength, ductility and resistance properties, forged products are more reliable. And they are manufactured without the added costs for tighter process controls and inspection that are required for casting vs forging. |
| Better response to heat treatment. |
Castings require close control of melting and cooling processes because alloy segregation may occur. This results in non-uniform heat-treatment response that can affect straightness of finished parts. Forgings respond more predictably to heat treatment and offer better dimensional stability. |
| Flexible, cost-effective production adapts to demand. |
Some castings, such as special performance castings, require expensive materials and process controls, and longer lead times. Open die forgings are examples of forging processes that adapt to various production run lengths and enable shortened lead times. |