Metalworking presses

What matters when choosing a press?

Deep Drawing Press

• Adjustable speed and blank holder forceDrawing speed and counter-holding force are set to suit the part in order to keep wrinkling under control. As the sheet gains depth, material builds up at the edge; the blank holder holds it down and eliminates wrinkling.
• Blank holder pressure is decisiveIf the pressure is too low the sheet wrinkles, if it is too high the flow is choked and the part tears; the window between them is narrow.
• Seamless vessels and bodies, multi-stage drawing

Hydraulic Forming Press

• Single-acting · no blank holderThere is no counter-holding; the form is not deep and there is little or no wrinkling — a blank holder is not needed.
• Shallow forming, bending, embossing, coiningAs long as the depth of the shape stays shallow the job is finished with a single action and no cushion setting is required.
• A frame that does not deflect is decisiveIf the frame deflects the embossing does not come out fully, and the die gets the blame.
• Standard sizes and tonnages

Hydroforming Press (T-Fitting Press)

• Tube in, T outIt does not join separate parts; it produces the finished fitting from a single tube in a single cycle.
• Weld-free, seamless fittingA weld seam is the weak point for both sealing and fatigue; here there is no joint at all.
• Axial feeding under matched controlInternal pressure and end feeding are set together; wall thinning stays under control.
• Short cycle timeAgainst cheap equivalents, the purchasing decision is made by output per hour.

Coining Press

• Work hardening through cold coiningThe grain structure is compacted and the yield strength rises; the part comes out stronger.
• A rigid frame at high tonnageA frame that deflects loses the dimension and wears the die.
• Shock-free force transitionsApproach, coining and decompression pass smoothly through a proportional valve; there is no impact.

Hydraulic Casting Press

• It works with an open mouldNo air bubbles are trapped inside the aluminium.
• Half the tonnage of die castingThere is no need to push molten metal through narrow channels; mould cost and floor space also come down by half.
• Around 1% scrap rateThe scrap rate for the same job in die casting is in the tens of per cent.
• A design developed by Özkoç itself

Laboratory Press

• It does not test, it produces the specimenIt is not a testing machine; it presses the part to be tried under controlled conditions.
• It records the process and delivers the recipeHow many degrees, what pressure, how long — which process gave the best part is read off the data.
• Precise temperature and cooling controlFor composites, air, air+water or hot oil cooling solutions are built into the machine.
• Time-based recording with a Siemens S7-1200 PLC and SCADA

Hydraulic Cutting Press

• Cutting is the real purposeBending and flange trimming are done on the same press too; but the machine is built for cutting.
• The counter-pressure cylinders take the shock, not the frameAt the end of the cut the counter-pressure cylinders come in and absorb the sudden release of load.
• The compact alternative to a mechanical pressAt high tonnage the frame of a mechanical (eccentric) press grows and becomes expensive; a hydraulic press does the same job in a smaller package.
• Longer die life, cleaner cut edgeThe counter-pressure cylinders also help parallelism, and the impact does not pass into the die.

Hydraulic Transfer Press

• One finished part per press strokeAll the steps are pressed in the same cycle; the part is passed automatically between stations.
• No press, operator or die per stepOne machine gathers work spread over separate presses; intermediate handling and work in progress disappear.
• Not just a press, an automation lineThe trimming, cutting and piercing needed between the steps are applied on the same line.
• With sheet cutting or blank feeding, loading and transfer units

Powder Compacting Press

• Dry powder, compacted in the dieThe powder fills the die cavity and interlocks under pressure; the part comes out hard enough to be handled.
• Even density at every pointA difference in density changes shrinkage in the kiln locally; distortion and cracking arise from this.
• Staged pressure, ramped releaseTrapped air that is not vented raises blisters; if the pressure is released suddenly the green body cracks.
• The same principle, different automationSalt cores, zirconia blocks and glass mosaics are the same compaction; what changes is the die and the feeding.