Rolling process and stamping & forging process are both forming processes which modify metal by deforming it with mechanical force and heat. This article will show you the similarities and differences between them.
 
Definitions
Rolling process is a metalworking process of plastically deforming, in which metal stock passes between a pair of rolls. Stamping & forging process, as its name implies, refers to all the processes producing metal products by forging and stamping. Sand Casting and stamping & forging process are both based on the deformability of metals, which achieve the desired shape by redistribution of metal rather than removal of excess metal.
 
Advantages and Disadvantages
Rolling process is a very effective metalworking with relatively low cost, which is especially suitable for mass production. However, the application of rolling is clearly limited, which is usually preparing stock for the following process. Stamping is an effective, accurate and economical process, which can produce both simple and Municipal OEM Parts with stable quality. The shortcoming is that the process produces excessive vibration and noise. Forging can achieve much stronger parts than most other processes. And in recent years, new method and modern forging equipment are introduced into forging industry, which make the application range of forging process incredibly wide. In addition, a combination of stamping and forging further expands the scope of the application. But the significant initial cost due to dies and related design work make forging economical merely with more volume.
 
Equipments
A rolling machine usually contains work rolls and backup rolls which can make metal pass through the rolls to change the sectional shape. For stamping, stamping press is the most common equipment, which contains tool and die to form parts. In forging industry, the traditional equipment is hammer and anvil. Although, with the development of forging technology, hammer and anvil are replaced by modern drop hammer equipment, the principle of the machine is still as the same as the hammer and anvil.
 
Applications
Automobile Parts is mainly used to reduce the cross sectional area of the metal stock and increase the length of the metal stock, which is the most common method to produce steel products. According to statistics, about 90% steel is processed by rolling. Stamping is often used to process sheet metal through punching, blanking, embossing, bending, flanging, and coining, which is greatly common in car factories, aircraft factories and other similar factories. Forging process is a method to produce much stronger parts, most of which are used in automotive and tool industries.