Principle of Hydraulic Press
A hydraulic press is a machine press using a hydraulic cylinder to generate a compressive force. The hydraulic press operates by forcing hydraulic fluid into a double-acting piston. The compressive force generated within the smaller hydraulic cylinder pushes the fluid into a larger cylinder, where greater force and pressure are applied. As the larger piston moves, it forces the fluid back into the smaller piston cylinder.
Technolgy of Hydraulic Press
Hydraulic presses are a very cost-effective and highly productive option when manufacturing small and medium batches of stamped parts compared to other equipment, but the cost ratio is higher and it is an unnecessary and unjustified additional cost, because it is impossible to generate profits. The profitability of hydraulic presses is improved by the access to new energy efficiency technologies that can be used for hydraulic presses.
In addition, the technical characteristics of hydraulic presses guarantee the forming quality of certain complex parts (due to their geometry, the hardness of the steel used, the process - especially the hot forming process, the required materials - especially those required for SMC, composite materials or IMC), making them the most ideal choice in most cases.
Application of Hydraulic Press
Blanking
Blanking is a process used to cut a specific shape or form from a coil, sheet, strip, or billet of metal. The resulting cut shape is then sent for further processing. The most common method of blanking involves feeding a coil of metal into a hydraulic press.
Drawing
Metal drawing is a process that deforms a workpiece by reducing its cross-sectional area using a mold or die with a smaller cross section. Unlike extrusion, where the workpiece is pushed through a die, metal drawing involves pulling the workpiece through the die. The drawing process can require forces as high as 150 tons to complete.
Extrusion
The cold extrusion process involves forcing a billet of material through a die at room or slightly elevated temperatures, producing a continuous product of constant cross-section. Numerous metals are suitable for cold extrusion, including lead, tin, aluminum alloys, copper, titanium, molybdenum, vanadium, and steel.