Upset forging is a process that involves heating metal while holding it, applying pressure to the end of a long bar in the same direction as its axis to form it into shape. This process will allow the production of forming long parts with a forged end.
What type of products can be made using upset forging?
The type of products that can be made by using upset forging are bolts, insulator pins, engine valves, and various screws.
What are the advantages of upset forging?
There are many advantages in upset forging, it offers greater strength and piercing and trimming operations, contributing to component weight reduction, and eliminating machining operations. In upset forging, there are no stress areas and no concerns about the brittleness of the forged metal. It is also an economical production, fewer operations are used in upset forging, it has lower scrap costs so this can result in a more cost-efficient production.
What materials can be used in upset forging?
There are many types of materials that can be used in upset forging- Stainless steel, carbon steel, and titanium. Brass, copper, and aluminum can also be used in forging.
The rules of upset forging
When the process of upset forging is being carried out there are a few rules that must be followed.
Lengths of stock that are more than three times the diameter may be upset successfully if the diameter of the upset is no more than 1.5 times the diameter of the stock.
The length of metal that can be upset unsupported in one blow without buckling should be limited to three times the diameter of the bar.
In an upset requiring stock, in length that is more than three times the diameter of the stock, and then the diameter of the cavity is not more than 1.5 times the diameter of the stock, the length of unsupported metal beyond the face of the die must not be greater the diameter of the bar.