Upset Forging is just one of many forging processes available from Brooks Forgings Ltd.
Our forge located in Stourbridge UK produces upset forged components on a daily basis. Please contact us today with your requirements.
Typical examples of upset forged components are Eye Bolts, Holding Down Bolts and Torsion Bars.
Our capabilities include both vertical closed die and horizontal split die upset forging machines.
Capacity from 6mm – 100mm diameter bar stock up to 10 meter lengths, including flat, square and hexagonal material.
We also have the diversity to manufacture forgings from a wide range of materials.
Ranging from carbon steels through to exotic alloys… we can help you with your forging requirements.
We specialise in the Upset Forging of round bar from 6mm up to 100mm diameter. This process is best suited for the production of usages or close net forgings, commonly used by machinists who are proactive in reducing costs, saving material and offering a more reliable component. The above image is a perfect example showing the amount of material that can be saved for a component requiring a reduction in diameter.
• Inherent strength retained by containing metal grain flow.
• No stress areas created where material size needs to be reduced.
• No brittleness or porosity concerns (sometimes prevalent in the casting process).
• No concern of fractures at weld joints (as could occur on fabrications).
Upset Forging is accomplished by holding pre-heated material between grooved dies, commonly known as ‘grip dies’. Pressure is then applied to the end of the bar in the direction of its axis.
The Heading Tool upsets the end of the bar by displacing the heated metal within a cavity. It’s not uncommon to have several upsetting operations on one die set, gradually forming the bar to its required shape.
Directional alignment through the forging process has been deliberately oriented in a direction requiring maximum strength. This also yields ductility and resistance to impact and fatigue.
Unidirectional grain flow has been cut when changing contour, exposing grain ends. This renders the material more liable to fatigue and more sensitive to stress corrosion cracking.
No grain flow or directional strength is achieved through the casting process.
At our manufacturing facility in Lye, West Midlands, we have installed several Horizontal forging lines capable of producing upset forgings.
The walking beam transfer unit makes the use of several compressed air cylinders to transfer the work piece from one die to the next and is easily capable of increasing output by up to 3 times that of conventional manual operation.
The majority of bolting and fastener components used in the industry today are manufactured using the Upset Forging process. There are two types of processes, horizontal split die upset forging and vertical closed die upset forging. The image above shows some of the head styles that can be achieved. Variations of these styles are also common, supplied as forged usages to many machinists and engineers worldwide.
The Multiforge is a unique concept with distinct advantage over conventional hot upsetting forging machines.
One of its main features is the departure from conventional vertical opposed gripping dies and the innovation of the horizontal disposition.
Not only is the weight eliminated but in addition the operator is working at a constant height. Without the need to raise and lower the component between die impressions, as the case on conventional vertical grip die machines.
The generous die width enables five forging stations to be set up in one tool assembly which can often eliminate secondary processing of certain components which require multiple operations.
A brief overview of the Upset Forging process, our capacity and suited products..PDF Format, 394.51Kb.
A brief overview of our Manufacturing Capabilities at Brooks Forgings Ltd..PDF Format, 2753.42Kb.