The process of producing forging rings involves a base plate that is ready-made and acquired from the steel manufacturer. In order to meet the exact dimensional requirements for the base plate, the material is hot-rolled and formed into the shape of a ring. If you don't know much about forged rings, read on to find the best answers to the most commonly asked questions about them.
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Did you know that the term 'forged' is a classic misnomer? You might be surprised to know that a huge part of the process involved in forging steel rings is actually completed by the hot-rolling method. This method starts with the application of heat on a billet of steel before it is pressed or forged. Next, the ring shape is formed by hot rolling the material in two directions.
In case you're wondering, it takes continuous rolling and casting to produce plates. It's also possible to forge steel into a billet before it is hot rolled until it attains the desired thickness of its final plate. Forged rings are a lot similar to steel plates because the rings go through a forging process from a billet of steel before these are rolled into their required shape. The key difference between both is that forged rings need to be rolled in two directions while rolling the plates only requires a single direction.
Compared to the hot-rolled plate, the lead time for obtaining forged rings of the same thickness is much shorter. In fact, depending on the thickness of the target component, the process of forging rings could be completed several months before the desired ring thickness can be achieved through hot plate rolling.
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If you want to know more about how seamless rolled rings are produced and the common materials that are used to make them, you've come to the right place. The entire process begins with the creation of a preform workpiece via the open die forging method. Through the use of this method, a piece of stock is processed to align the metal's grain flow before a hole is punched in its central part. Creating the hole enables the manufacturer to place the component in the ring mill. Once placed in the ring mill, the workpiece is rotated by an idler roll while it applies pressure to the ring's inside part. At the same time, the driver roll is used to apply pressure to the outside part of the ring. During the process, the ring's diameter increases while the material flattens and two axial rolls control the ring's height. This continues until the desired diameter is attained.
Many manufacturers across the globe turn to alloy steel for projects that require strong, hard, and tough rolled ring forgings. In most cases, the most popular alloy steel options include , , and . It's important to note that you may need to use additional heat treatments for specific types of alloys in order to achieve your desired ring quality.
Stainless steel is widely used for seamless rolled rings because of its physical and chemical properties which include strength, stability, durability, and resistance to heat as well as corrosion.
Carbon is another material that's widely used for rolled ring forgings. However, when more of this material is added, cracks may occur and the material may become more challenging to deform and weld.