Flowforming can achieve a better dimensional accuracy than other methods of shaping can achieve. In this process the tools are subjected to little or no wear, the CNC control process provides a consistent and repeatable precision of one batch to another.
The controls of diameters and wall dimensions that offers flowforming accuracy will reduce or eliminate their need for secondary operations such as polishing or finishing.
The high degree of roundness and concentricity straightness obtainable by the process of flowforming often reduces or eliminates the need to straighten and balance the finished component.
The very fine surface finish generated by flowforming in the inner and outer diameters, in most cases also overrides the requirement of grinding and / or polishing.
flowforming accuracy can economically and easily generate the wall very thin and precise, with thicknesses regardless of the size of the diameter of the component. If you have had to deal with the difficulties and costs of managing the deflection of a thin metal body in turning or grinding operations, will greatly appreciate our precision process.
Unlike any other forming process (ie, extrusion, forging, impact extruding, thermoforming, pilgering, drawn over mandrel, etc.), the flowforming can vary the wall thickness of a component in any place and as often as desired along the length of the component no additional cost.
The Flowforming offers the unique possibility of forming the size of a workpiece pre-hardened, thereby eliminating the difficulties and high costs associated with final machining, polishing and finishing a hard, distorted hollow component. Flowformings accuracy, allows reaching a high dimensional accuracy and at the same time ensuring compliance of required mechanical properties.
As a result of cold working (strain hardening) that occurs during the processing cycle, a component will have considerably higher mechanical properties than those of the starting material. Typically, the preform material is plastically deformed, wall with reductions in excess of 75% of the wall thickness of initiation, causing a substantial refinement of the grain structure and a realignment total grain microstructure of very uniform axial direction . The greater the reduction in the wall of the finished component, the grain microstructure is finer. If necessary, the grain structure can be recrystallized by a post formation annealing cycle.
During the cycle, all the crystals that form the starting grain structure will be displaced and in harmony. The general orientation of these crystals is known as "texture". Almost all mechanical properties are influenced by the texture of the metal. Flowformed components, the overall texture is always uniformly oriented. For example, in the case of closed hexagons bearing materials such as titanium and zirconium, their crystals have flowformed radially oriented basal planes. This condition increases the resistance of the metal biaxial, effectively increasing the circumferential force. The crystallographic texture fluoformada can be enhanced by a post flowforming with annealing cycle. On a micro level, annealing recrystallize the grain structure, while at the atomic level, the textured effect will be magnified.
The Flowforming is a cold working process which, through its work hardening of the base metal, substantially increases the limits of elasticity and tensile material formed. Certain customers they choose to take advantage in improving the mechanical properties effectively, the design of thinner walls for lighter components. Others prefer to post-training for stress relief or solution hybridization component to remove residual stresses. In other cases, the component can be heat treated or aged, to alter the force levels achieved, hardness and ductility in the requirements specification.
One of the main benefits of the flowforming is its seamless construction. Very often, we are also able to integrate more of a different component in the same structure flowformed smoothly.
The flowforming eliminates the manufacturing problems associated with welding, such as heat affected zones, distortion, porosity and welding faults as well as the costs involved in the weld. As there are no welds or seams must be taken into account cost savings when compared to the manufacture of a component flowformed.