METALMAQ manufactures four special dies with “vee” of 300 m/m at 70º

METALMAQ manufactures four special dies with a “vee” of 300 m/m at 70º, for a customer in the north of Spain who works for the naval sector.

THE PROBLEM OF OUR CUSTOMER

The customer wanted to manufacture new pieces for the naval sector with HARDOX 450 material and thickness of 20 m/m, which is an anti-wear steel material with great resistance and with the ideal hardness characteristics for the pieces that he wanted to build.

HARDOX 450 material offers a lot of resistance when bending and a lot of tonnage is required. This was NOT the problem of our customer, as he has a TRUMPF 800-ton, 7-meter-long press brake at his facilities.

According to our calculations, to bend HARDOX 450 of a thickness of 20 m/m with a die with a “vee” of 300 m/m, about 300 Tons per meter are needed (see HARDOX Material table), as our customer’s piece was almost 2 meters, it would take about 600 Tons to be able to bend the piece without difficulty.

Another feature of the HARDOX 450 is its elastic return, which in a thickness of 20 m/m can reach about 20º. As our client wanted to bend a piece at 90º, the dies were designed with an angle of 70º, to compensate this return.

THE DESIGN OF THE DIES

As we have mentioned previously, the characteristics of the die are the following;

– Lower mooring type “wila” (or also known as Beyeler or Trumpf system), to be able to adapt it without problems to the press brake TRUMPF of our customer

– V with a dimension of 300 m / m (defined by the HARDOX Material tables)

– Angle of the die at 70º to compensate the bending of the material HARDOX 450

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As you can see in the attached photos, all the tools that we manufacture have our logo and their internal order number (to be able to follow their traceability and their main characteristics).

THE MANUFACTURING

The dies were manufactured in C-50 steel tempered by induction in the work areas, to avoid wear and thus prolonging the useful life of these and finally they were rectified.

As can be seen in the images below, the dies were manufactured with threaded holes on the sides to facilitate the assembly operation on the press brake and thus contribute to the safety when changing dies if rings are mounted to move them. We must emphasize that each die of 500 m/m length has a weight of 350 Kg, that is to say, the four dies have a total weight of 1.400 Kg.

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In the photo below you can see the CEO of Metalmaq with the dies manufactured before being sent, where you can check their large dimensions.