ADVANTAGE

Compared to the traditional drawing technology foreseeing the auxilium of a punch and of a matrix, the hydroforming process needs only using one part of the traditional die.
The economic advantage arising from this technology permits to low the investments cost for the equipment of about 60÷70% if compared to the traditional drawing system.
The die consists of the matrix (female) of the geometry of the piece to be drawed. Once such shape has been obtained by using a CNC machine it is possible to mount it directly into the hydroforming plant and to draw immediately the pieces required.
Therefore every die adjustment activity is eliminated as well as the following optimization tests.
The series SLC can be equipped with a particular die hooking system which allows for its being equipped in a few minutes. This system solves the problem of the frequent production shifts and permits to the user to be very flexible and competitor in shifting from one manufacturing lot to the other, taking into account that a lot consists sometimes only of five/ten units.
Die hooking is carried out by electro-permanent magnets having a lifting capacity of up to 100 ton.
It is enough to position the die on the front machine feeding shuttle and the automatic system can then set the die in the proper site without it being necessary any further adjustment and therefore the proper alignment with the machine get assured.

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QUALITY

The hydroformed product reaches quality levels quite superior than those ones which can be get by the product drawed by the traditional system.
Hydrostatic pressure which forms the sheet permits the drawed piece to be stretched uniformly in every direction and therefore assures a bigger rigidity.
The part being in contact with the fluid does not present any scratch, therefore results to be very suitable for every part requiring to be painted or which however must comply with some very strict quality standards.
In traditional drawing the products generally speaking, after their deep-drawing undergo some other adjustment phases, in order to compensate annoying elastic returns of the material.
The hydroformed product on the contrary, thanks to the starting uniform stretching, results to be not sensitive to the phenomenon of the elastic returns. Thence any further working is avoided and a huge manufacturing cycle saving is obtained.

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COMPONENTS DRILLING

Hydroforming is not only a process suitable for sheet and pipes forming, as a matter of fact it permits a series of drillings to be carried out at the same time during the drawing cycle and in an absolutely controlled manner.
Holes are not carried out by mechanic punches, thence the corresponding saving as far as maintenance and warrantee are concerned together with an absolute repetitiveness of the drilling itself.

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SLC PLANTS

Since hydroforming requires uniform pressure across the whole piece, the corresponding necessary clamping force results to be elevated.

It was clear then that in order to exploit at the best every benefit from the hydroforming process it was necessary to study a new plant typology which would assure: a higher compactness, an elevated force-weight ratio and which would be very convenient from an economical point of view. The strict specifications imposed to our technical dept. did require also a machine practically without any elastic movement, which would have entailed a notable waste of energy, and whose light must be the most possible reduced in order to increase its rigidity.

Following to this careful and deep study the SLC series machines were born, they are characterised by a max height of about 4 meters and do require foundations not deeper than 1 meter.
It was possible thanks to the particular cylindrical shape characterising their building philosophy.

To get the maximum speed of drawing process a pressure intensifier has been conceived for the series SLC which allows to get to elevated pressures, several thousand bar and to feed the process by elevated quantities of fluid.
By this system the process time periods result to be absolutely comparable to the traditional drawing tecnique and in certain instances even quicker.

Self-learning, indispensable in hydroforming, which can be get by the most sophisticated hardware and software systems installed in command panels and command pulpits designed and realized by us permits to vary at the same time and in a controlled manner the pressure of the fluid as well as the clamping force of the machine.

Sheet, as a matter of fact, must slip in a controlled manner, as in traditional process, into the die in order to feed the material deformations during the drawing cycle.
This control is carried out in traditional technology by the blankholder.In Hydroforming the blankholder's function is managed, without the blankholder, by the software foreseen in the SLC series.
The program modules the clamping force of the machine, thus assuring that the sheet will be sliding at the proper speed during the drawing cycle.
Thanks to this device it is possible to simplify drastically the construction of the dies.
As a matter of fact the Hydroforming die consists only of a single element.

The software mentioned above is installed in the PC of the machine in complete Windows © operative system.
In addition to that, every data of the machine is managed by a relational Database, Microsoft SQL ©, which interfaces easily with the management part of the company.

SLC series foresees the possibility to activitate the failure a/o alarm tele service, directly from the site of Muraro.

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