WHAT IS THE HYDROFORMING PROCESS
The hydroforming process was invented in the late 1940s or early 1950s as a cost-effective way to produce small quantities of drawn parts or parts with irregular or asymmetrical contours that are not suitable for stamping.
Hydroforming is possible for virtually all metals that can cold form, including aluminum and brass, carbon, stainless steel, and copper, as well as high-strength alloys. You can know more about hydroforming presses online.
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HYDROFORMING PROCESS WORKING PRINCIPLE
Hydroforming presses work in the same way as the female or upper die elements. It consists of an oil pressurized chamber, a rubber diaphragm, and a wear pad. A punch and a ring replace the lower, or male die element. The punch is attached by a hydraulic piston and the blank holder or ring that surrounds it.
Place a blank of metal on the ring to begin hydroforming. After the press has been closed, the oil chamber is placed on top of the blank. While the oil is being pressurized in the forming chamber, the punch is pushed through the ring into the forming chamber. The blank is not damaged by stamping because the rubber female portion of the forming process is used.
The entire blank's surface is supported by the diaphragm. The diaphragm forms the blank around the rising punch and gives the blank the punch's shape. After the hydroforming cycle has ended, the pressure in a forming chamber is released. The punch is then retracted from its finished part.