Why Consider Forging for Ring Rolling

Ram Prakash By Ram Prakash, 13th Nov 2014 | Follow this author | RSS Feed
Posted in Wikinut>Business>Selling A Business

Forging has some obvious benefits to offer as compared to other metalworking processes, strength and reliability being the most significant. Ring rolled forgings are the most widely used forgings and this article discusses how considering forging for rolled rings can be beneficial for the production of some of the most critical capital equipment parts. Read on to know.

Why Consider Forging for Ring Rolling

The metalworking industry has evolved with the introduction of new metalworking processes, each offering a new set of capabilities, advantages and costs. That said buyers today, face wide array of alternatives, when they are looking for a supplier for producing a metal part significant for their own product development.

However, forging though ages old continues to be the ideal metalworking process for the manufacture of part applications. To be able to understand the suitability of forging for application parts manufacture, it’s important for buyers to know the benefits that forging has to offer.

Forging: Process & Benefits

Forging refers to the process of pressing, pounding or squeezing metal under high pressure to yield high strength parts known as forgings. While most forged parts are manufactured by the hot forging process, where the ingot is heated to re-crystallization points before being worked on, certain forged parts can also be manufactured using cold forging as well.

Quite a number of buyers confuse forging with casting which is completely different because casting entails melting and pouring the metal into casts to form parts. Forging however does not involve melting of the metal.

There are broadly three types of forging processes, namely:

Ring Rolling Forging
Open Die Forging
Impression Die Forging

There are many other forging processes besides the above three like closed die, extrusion, etc. However, we’ll be talking about Ring Rolled forgings in particular only.

Rolled Ring Forgings

Rolled ring forgings are formed using the ring rolling process on the rolling mills. The mill sizes can vary in size, so as to facilitate production of rings with outside diameters measuring a few inches to over 3000 inches and weights ranging from a pound to over 300,000 pounds. Although the simplest shape that can be produced by the forging process is a rectangular cross-section ring, shaped tooling can be leveraged to produce rings in custom, complex shapes with contours on the outside and/or inside of the diameters.

The process involves piercing a circular ingot to make it into a donut shape. Next its heated to re-crystallization temperatures and then placed over a idler also known as the mandrel roll. The mandrel then begins rotating, and with simultaneously applied pressure the thickness of the walls of the ingot is then reduced. Its an extremely controlled process.

Forged rolled rings can be manufactured in different configurations ranging from cylindrical shapes that span heights of a few inches to over 9 feet to washer-like flat parts. The ratio of wall thickness to height can range from 1:16 – 16:1. In fact, greater proportions can also be achieved by using special manufacturing processes and tools.

Do you consider forging to be a you-can’t-go-wrong metal parts production process? Share your thoughts and opinions with us below.


Ring Rolled Forgings, Rolled Rings

Meet the author

author avatar Ram Prakash
I am a columnist and blogger, loves discovering and writing about high quality carbon steel forge, stainless steel and duplex steel forgings.

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