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When it comes to metalworking, a question often asked is …“casting or forging?”
The discussion around casting conversions has seen greater debate over the past few years as companies start looking for either a better supply-chain solution or stronger, sounder and technically superior components. As engineers begin to evaluate the long term benefits of forgings compared to castings or fabrications, they’ve begun to realize that forgings can be every bit as competitive price-wise while delivering top-quality components. Additionally, (contrary to popular beliefs) with the more recent advances in forging technology, forging facilities are able to produce forgings for applications requiring more complex shapes.
Forging is a viable solution to your problem if you find yourself in any of the below situations:
Today’s high strength material users are increasingly obliged by everyday economic and competitive realities to seek alternatives to their current manufacturing processes. The reality that forgings can be used for more than simple parts (and forged at very large dimensions) is slowly being realized. Companies who are looking for a better competitive advantage have started seeking the help of forging facilities with the metallurgical know-how to deliver improved products, processes and, especially, costs. If you or your company has design control and you are currently using a casting or fabrication for a high-wear or critical component, you are a perfect candidate. However, you must be willing to put resources toward truly finding a new solution. Additionally, your metalworking partner must have the metallurgical and forging knowledge necessary to work closely with your engineering department.
Forgings cannot replace 100% of the steel castings currently or conceivably in the world. Reality is, not every opportunity will result in a conversion. In some situations, castings or fabrications are the best solution. For those reasons, at Scot Forge, conversions are handled on a case-by-case basis. Many factors are considered, including the ability to redesign a product as well as the design requirements (typically shape). Oftentimes, securing engineering’s approval is the key to making an individual conversion actually happen. When reviewing your component, it is helpful to take a step back and ask, “What is the purpose of my design?” Don’t get stuck with a historical design that doesn’t take advantage of today’s technological advancements. The best results occur if you’re willing to think creatively and challenge traditional methods.
Usually, forgings target a lower total cost when compared to a casting or fabrication. When you consider all the costs that are involved in a product’s lifecycle from procurement to lead time to rework, then factor in the costs of scrap, downtime and further quality issues, the long-term benefits of forgings far outweigh the short-term cost-savings that castings or fabrications might offer. Working closely with your forging partner, you should develop a project statement at the beginning of your conversion project which outlines all your related issues. By the end of your discussions, your forging facility should be able to provide a solution that best addresses the problems.
Scot Forge brings the knowledge of engineers, metallurgists and forging experts to work in collaboration with your internal team, helping you to achieve long-term cost reductions and improved lead times through:
More than anything else, our customers ask that their engineers be educated about conversions, about forgings, and about the newly expanded range of product types (complex parts) that can be produced as a forging. Rather than dismissing the idea as impractical or impossible, call on us to help enlighten you and your team of the technical and/or economic merits of any particular conversion project.
We will devote as many resources as needed to provide a thorough review and subsequent proposed solution to your casting or fabrication problems. Collaborating closely with customers, we have a history of success for converting castings and fabrications into forgings and are a recognized leader in providing forged solutions for complex, intricate shapes.
A customer’s product had a long history of issues due to poor casting quality. Working with Scot Forge, they were able to transition the casting to a forging which removed all re-work and weld repair from their process and allowed them to provide a better component to their customer. This saved an average of seven (7) processing hours per piece.
Scot Forge collaborated with a customer to convert a 22 piece fabrication into a two (2) piece forging design, saving over 500 hours in welding costs per unit.
Our customer’s casting supplier was not able to meet their production demand, resulting in a potential loss of a significant amount business. Scot Forge was able to provide a solution that met the customer’s demand and delivery requirements at a lower total cost than the casting, saving money and defending business.
More examples are described in the cases below.
The previous process was a casting.
Today the part is forged as a one-piece forging.
The part was previously centrifugally cast.
Today the part is manufactured as a near net forging.
The part was originally a casting.
Today the part is produced by forging.
With the help of Scot Forge and Scot Forge’s creative engineering, Sloan Industries, Inc (Wood Dale, IL) discovered that using forging, rather than casting on magnesium die casting goosenecks yielded better machine performance and part quality.
Scot Forge worked with Deca Industries to create a highly unusual three-spoke forging. The forging replaced a casting used in the mining industry.
CTI Molecular Imaging (Knoxville, TN), in a joint effort with Scot Forge recently converting a cast component to a forging in the production of steel rings and hubs for its Eclipse Cyclotrons.
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