How to Make Hydraulic Press Plates

Hydraulic presses are one of the most versatile and efficient materials shaping tools available, being used to bend, form, punch through metal sheeting or coin metal pieces.

This system features a solid steel frame into which is placed the hydraulic ram. There are two cylinders on this frame; with the smaller one housing the plunger.

Material

Hydraulic presses are large machines used for mass production of components requiring both temperature-controlled process environments and high forming pressure, such as ceramics. These presses can also be found in scrap baling equipment and scrap ceramic manufacturing processes - and even be utilized to prepare samples for X-ray fluorescence spectroscopy (XRF) analysis.

Hydraulic presses consist of three core elements: the frame, power system and hydraulic pistons. These pistons may be manually, pneumatically or electrically operated to produce various degrees of mechanical pressure that is measured in tons.

To assemble the frame, scavenge for pieces of heavy steel like "U" or "IL" channels shaped like letters U or L and long enough to accommodate the height of your hydraulic ram or jack. Drill four holes in each side piece before cutting threaded stock to length and welding these together to form the press' base plate.

Tools

Making use of the rosin press can be straightforward, but to get the best out of it you should use only high quality plates such as these JEGS shop press plates made of solid steel that will withstand high-pressure usage over time. They come sold as pairs and come in multiple sizes.

Once the frame is assembled and you have checked to make sure everything is level, it is time to fully weld all of its seams using symmetrical welds in order to minimize heat distortion and ensure safe welding conditions.

Once that is completed, the ram cylinder and hydraulic system must be set up. This should not be an intricacie task as most H-frame presses will come with an instruction manual to guide you through. You will require a hand pump capable of producing hydraulic pressure that drives down on top of the plate to create pressure between plate and anvil; an online chart can help determine how much force will be necessary depending on material and size requirements.

Measurements

Finding the ideal size press is vital to its effectiveness, whether you are working with a small, portable unit or large industrial machine. Your press must meet the pressure needs you intend to apply.

If plates are too big, this could result in structural failure and cause serious injury to those inside. Therefore, it is essential that material measurements be accurately documented prior to being placed into the press.

Along with platens, you'll require a hydraulic power unit (HPU) to supply oil to motors and cylinders to create pressure. An HPU typically comprises of a tank with electric pump, motor, hoses and chillers to create this hydraulic pressure. A load cell on a hydraulic press converts mechanical force into electrical signals to monitor force applied by its piston ram or rod end.

Cutting

Hydraulic press plates are cut and shaped to form the basic frame that houses a hydraulic pressing mechanism, while also being made larger and heavier to support workpiece pressure exerted upon them by their hydraulic pressing mechanism. This step is critical, as its cylinders produce maximum force throughout each stroke of pressing action.

After being formed, the press plate is placed onto its baseplate and connected to a hydraulic power unit via hoses and piping, for testing and adjustment for accuracy - this includes making sure that there are no leaks in its hydraulic system.

PGI Steel also manufactures other parts for hydraulic presses, such as sub-plates, parallels, risers and press side frames that can be customized to the part being pressed. They may even come patterned or sized specifically to fit. Bouldron plates are adaptor pieces used to reinforce or augment pressure exerted by hydraulic press machines; often these bolster plates feature T-slotted lines or other specific markings to enhance pressure exerted from them.