Precision forging is an advanced forming technique used to high-strength components with high dimensional accuracy and surface finish. Precision forging produces shaped pieces of metal, which require little to no machining compared to standard forging techniques. Industries such as automotive, aerospace, oil and gas, industrial engineering, and machine building prefer using this technology because of its advantages over other methods, including consistency and low cost.
What is Precision Forging?
Precision forging is a near-net-shape and/or net-shape forming process for metal. The metal, either heated or cold, is formed within the dies (the tool used to shape the product) at precise pressures under the control of an external force. The process produces parts with very close tolerances and a controlled, uniform grain flow and mechanical property consistency. Due in part to the shortened operation time and the reduction of wasted material, precision forging allows for increased efficiency and higher quality than traditional forging processes.
Key Features of Precision Forging
Precision forging produces components with complex geometries and high dimensional accuracy . Components produced through Precision Forging are produced from a pre-controlled flow of metallic material into a die. This controlled flow results in the development of higher strengths and fatigue resistance in comparison to components produced with standard forging techniques. Components produced via Precision Forging also tend to have superior surface finishes compared to parts produced via conventional methods. Because of this, less post-processing is needed to achieve an acceptable quality finish on components manufactured with Precision Forging. Precision Forging provides uniform dimensions and repeatability of parts manufactured in this manner, therefore making it an ideal tooling process for large-scale manufacturing of critical component parts.
Precision Forging Process
Precision forged products are made using specific raw materials that may be made from Carbon Steel, Alloyed Steel, Stainless Steel, and Non-ferrous metals. The raw materials must be heated to a specific temperature depending on the processes used to forge them (i.e. Hot Forging vs Cold Forging). Once all the pieces of the assembly are created with the Precision Forging process they will go through the Precision forging process before being assembled for use in manufacturing (such as Heating, Trimming, and Minimal Machining). Precise Simulation and CNC systems have been developed that allow for the design of the Die Set, the flow of material through the Die, and the pressure applied to the parts during manufacturing to be accurately designed.
Advantages of Precision Forging
Many advantages come with precision forging as opposed to casting and traditional forging. Precision forging results in the maximum mechanical strength of the material, by using a continuous flow of grains in alignment with the forging shape. The amount of material needed to create the component is reduced, in turn decreasing the amount of waste created during the manufacturing process, therefore reducing costs associated with production. Dimensional accuracy is greatly increased in precision forging, which results in faster assembly and enhanced performance of the finished product. Components manufactured through the precision forging process are typically known for their superior wear resistance and impact resistance, which generally leads to an extended service lifetime for these components.
Applications of Precision Forged Components
In the automotive sector, precision forging is employed extensively in creating components such as crankshafts, connecting rods, gears, shafts, and steering parts; whereas in aerospace and defense industries, it is applied to produce structural elements that require high levels of strength (high-stress components), as well as engine parts. In the oil and natural gas sectors, precision-forged flanges, fittings, and valves meet the demands of high-pressure conditions. Furthermore, industrial equipment like machinery used in the generation of power and those utilized in the fields, etc., all profit from using precision-forged parts due to the increased reliability and sturdiness of these items compared with others made from alternative materials.
Precision Forging vs Conventional Forging
When compared against traditional processes of forming metal, the precision forming of metal creates parts that are produced with tighter tolerances and improved surface finish. A large portion of the traditional forming process requires extensive post-processing of parts to attain the finished dimensions, which ultimately results in increased cost and time. However, because precision formed parts require a significantly reduced amount of time spent on machining, it creates improved efficiencies throughout the entire process. Therefore, this process is optimal for any industry that requires the highest levels of accuracy, consistency and performance.
Future of Precision Forging
Industries are demanding more lightweight, high-strength and precisely engineered components every day, which means Precision Forging has become an important contributor to current manufacturing processes. With continued advancements in industry technologies (i.e., Industry 4.0), precision forging processes are evolving rapidly through digital simulation tools, automated forging presses, externally mounted robots and in-process Quality Control (QC) tools. These tools improve both the accuracy and efficiency of producing precision-forged parts.
Conclusion
Precision forging is a critical component of a successful manufacturing process by utilizing accurate, strong, and efficient technologies to manufacture components very close to the final product shape with the maximum available mechanical properties and lowest amount of material wasted. Manufacturers utilizing precision forging have developed a competitive edge relative to other manufacturing methods, allowing them to secure market share due to the advances in manufacturing technology. Manufacturing technologies will evolve and continue to provide a vehicle for establishing new standards of quality, dependability and performance for all forged components.
