Boldrini POCC flanging and dishing machines

BOLDRINI flangíng machínes díshíng presses

PORTAL AND GAP The main frame of the machine is a rigid construction of welded steel plate.
FRAME HYDRAULIC ALL welded parts are stress-relíeved in a normalizing furnace, and the press structure is such that aLL stresses are accommodated within the frame so that only a moderate found- D1SHING PRESSES
ation is required.

FOR COLD D1SHING
To facilitate transportation and handling, the larger presses are built on a composite
AND DRAW1NG construction basis and assembled on site.
The pumps, motors, hydraulic reservoir and associated equipment are housed in the upper
frame of the press so as to provide easy access for serciving.
A T-slotted table is welded to the bed of the machine to provide simple location of the
bottom bolster. ALL cylinders are made from highest quality steel and the shaft of the main cylinder is chromium plated and ground.

τype POCC
Capacity: 50 to 600 ton
Gap: up to 3000 mm - 117
Length o1 stroke: up to 1200 mm - 48
W/TH OR WITHOUT SIDE CYLINDERS

seaiing rings are of first class quality, to withstand high pressure. Standard sizes are used so that replacement rings are readily available.
The hydraulic unit comprises: the oiL reservoir
an oiL cooling coil for the variable capacity pumps

a pílot pump
a solenoid valve.
The fíllíng vaive is fixed to the cylinder with tensile strength a11oy steel screws.
Return cycle ís automatEc.

Type pA0
Capacity 50 to 3000 ton
Distance between columns:
up to 8000 mm - 27
Length of stroke: up to 1200 mm - 48
WiTH OR WITHOUT BLANK HOLDER
WiTH OR WITHOUT SIDE CYLINDERS
The píston stroke can be readiły adjusted by limit switch; this adjustment can be manuai or serva-assisted.
The press may be pre-set to perform any of the followíng operations:
the piston descends and remains under pressure for as long as requíred
the píston descends at the requíred pressure preselected by a dífferential pressure switch and then returns as above, but functíoníng on a continuous repeat cycie for tool setting, the píston can be advanced and stopped at any position.
All operatíng cyc es aгe preselected and controlled from a controi desk whích may be located to aliow the operator to conveníentiy check instruments and pressure reguiating valves, in smailer size machines the control panel is fitted to the side coiumn of the press.
Electrícaf: the e ectrics are generaily provided to suit 380 V. 50 c/s or, if required, 400 440 V. 50 c/s oг 60 c/s. The main electrical components are: enc osed motors externally ventilated for the pump drive, a control desk, connection hoses, a control cabinet containing all remote controls and relays, safety and protection devices.
D1SHING PRESS Throught the world, the effective production of dished ends has beeп largely based upo  the complementary use of a Portal Press and a Flanging Machine: the former to produc AND FLANGING the Crown Radíus and the latter ;he knuckle Radlus. Boldríni Dishing Presses have
MACHINE COMBINATION been specially designed to ensure:
Low cost of toolíng: one set of dies ís used to dish blanks of any diameter or thickness provided they are to be formed to an identicai dishing radius.
Mínimum díshing time: the rigid press construction ensures minimus deflectíon of the press frame and consequently fuly effective working strokes.
Automatíc dishíng cycie: is províded by means of hydraulic/mechanical manipulators to allow one man operatíon.
FORMING it is possible to flange ends of any kind of inetal - Al and Cu alloys,  carbon steel, stainless steel, high proof stainless steel and a11oy steel of high yield strength.

ACCORDING TO DIFFERENT KIND OF MATERIALS ASME HEADS FLANGED HEADS OD OD. IKR. T
CONICAL HEA05
REVERSE HEADS
FLARED HEADS
HEMISPHERICAL HEADS
HEM 1SPHERI CAL HEADS
Close to/erance can be obtaíned,
lower than in the hot torming.
RiBO Oпce the blank has been díshed on the press, a knuckie radíus must be formed on the períphery in order to obtaín a toro-spherícal section. Thís ís done on R1B0 Flanging
FLANGING Machínes having the followíng exciusíve features:
MACHINE = Gradual, stepiess fiangíng of any materíal thíckness.
- Flanging of thin ends under 3 mm - 1/8 for all materials íncludíng high yield strength alloys.
Automatic fianging cycies over entire capacíty of machine.
= Mínimal thínning considerably lower than ín hot forming processes.

Type RIB0 10/S
Diameter : 300 to 4000 mm - 11 3/4 to 160 -
Knuck/e radius: 20 to 300 mm - 3/4 to 12 -
Thickness : 1,5 to 13 mm - 5/64 to 1/2 -
HigM fianging speeds are achíeved by regulatíon of workíng pressure to suit the materíal yíeid strength.
Fíne surface finísh is achíeved because the m ınimum of operator manípulation ís requíred.

τype R1B0 18/N - R1B0 18/NSF
Diameter : 400 to 5000 mm - 16 to 200 -
Knuck/e radius: 20 to 400 mm - 3/4 to 16 -
Thickness . 3 to 18 mm - 1/8 to 3/4 -
τyPe R1B0 24 >
Diameter : 500 to 5000 mm - 20 to 200 -
Knuckle radius: 20 to 500 mm - 314 to 20 -
Thíckness . 3 to 22 mm - 1/8 to 7/8 -
тype R1B0 25 SF
Diameter 750 to 6000 mm - 30 to 240 -
Knuck/e radius: 30 to 600 mm - 12 to 24 -
Thickness 4 to 25 mm - 5/32 to 1 -
Diameter : 800 to 6000 mm - 32 to 240 -
Knuckle radius: 25 to 1200 mm - 1 to 48 -
Thíckness . 4 to 30 mm - 5/32 to 1 1 /4 -
Type R BO 45
Diameter : 1000 to 6000 mm - 39 to 240 -
Knuckle radius: 30 to 1500 mm - 1 1/4 to 60 -
Thickness . 4 to 45 mm - 5/32 to 1 3/4 -
R1B0 The machine frame is of robust welded corstruction, and the maín components are as follows:

FLANGING MACHINES
The machine bed: the lower work carriage slides in ways welded to the machine bed, FOR FLAT, DISHED, and all the parts comprísing the machíne bed and the s iding carriage are normalized
CONlCAL FLARED AND after welding.
HEM1ãPHER1CAL ENDS Uprights: fully machíned heavy steel plates, cross-braced to ensure strength and stabílíty
the formíng roll: ís províded with selectíve speed control to suit the range of thicknesses, díameters and knuckle radií the machíne can fiange; a special low speed ís provided on request for use when chamferíng. Tooi changíng ís minimal, ínvolvíng oniy a change of formíng roll to suít the particular knuckte radius requíred to be flanged the flanging roli: is provided wíth a patented compound movement which forms the end beíng flanged to the required radíus of the formíng roll two guíde rolls: support the end firm y agaínst the forming гc .
Upper beam: carríes the guideways for the top slíding carriage incorporatíng the end lockíng cylínder.
Checkíng the díameter: a graduated scale and adjustable pointer are províded to positíon the carriage correctly to suit the diameter of the end beíng flanged.Hydraulic system: electríc pumps are mounted on a bed plate integral with the oil reservoír whích is complete wíth fílter and heat exchanger, and these supply the cylinders operatíng all rollers.
Electríc system: on the machine is housed separately in an encIosed cabinet which contains all adjustable remote contro s and the maín swítch.
Controls: all hydraulic and electric controls are grouped within conveníent reach of the operator.
Iilumination: the workíng area is illuminated.

SFECІAL FOR ENDS WITHOUT A CENTRE HOLE: A great number of tanks and pressure vessels requíre ends without a centre hole. A modified version of the standard flangíng machíne FLANGING designated the type R1Bo/sF permits the end to be clamped wíthout ocation 
MACHINES tre hole.
The machine capacities are ídentícal to the standard models

AUTOMATIC FLANGING CYCLE: This method minimizes operator skill and thereby ensures a smoother finish and reduced thinning. The automatic cycle is pre-set to suit the particular thickness and yield strength of the material being flanged. A pre-setting chart is provided and manual intervention may be used at any point in the cycle.

EDGE PREPARATION FOR WELDING: A trimming attachment is available which includes a tool holder adjustable in any direction.

FLANGING ENDS OF SMALL DIAMETER: A supplementary attachment can be fitted for flanging ends of very small diameter. The end is supported on an offset workholder which in turn is located on the main center-pin support.

FLANGING FLAT ENDS: Suitable support rolls can be supplied in place of the standard guide rolls to carry out this operation. Finished ends are perfectly flat.

GUIDE ROLLS FOR STAINLESS AND ALLOY STEELS: To prevent marking of ends made from expensive materials, special plastic guide rolls can be supplied.

FORMING THIN ENDS: To facilitate flanging of thin ends, a special flanging roll is available which minimizes thinning of the end.

FORMING ROLLS: A complete range of rolls of different radii is available to obtain toroidal and spherical shapes.

SPECIAL PROFILE ENDS: Machines can be equipped if required with suitable forming rolls to suit special profiles; quoted on request.

HOT FLANGING: The dished end is heated to a suitable temperature according to material specifications and then placed on the flanging machine in the same way as for cold ends. Adequate protection against heat radiation must be provided both for the machine and the operator. Successful hot flanging is achieved with the use of the automatic cycle employing one or more passes, depending on the material thickness and temperature. In general, the hot flanging capacity is 50% higher than the cold flanging capacity.

PRODUCTION OF ENDS FOR FUEL CONTAINERS: For fuel containers up to a maximum size of 2500 x 7 mm (diameter x thickness). Cold pressed from a square blank in a single stroke, the ends are then trimmed on a special circle cutting shear. Quantity production is highly automated.

INSTALLATION FOR THE PRODUCTION OF ENDS FOR FUEL CONTAINERS:

WELDING TABLE: Maximum plate width: 8000 mm; maximum thickness: 50 mm for carbon and alloy steel.

PORTAL FRAME PRESS WITH BLANK-HOLDER: Special design for forming circular shapes, heads, hemispheres, etc.

SPECIAL VERTICAL TYPE CIRCLE CUTTING SHEAR: Special model for trimming circular and hemispherical shapes from blanks.

ATTACHMENT FOR FORMING ROLL INCLINATION: Small diameter adjustment useful for radius correction and increasing the existing radius.

ENDS OF DIFFERENT DIAMETER AND SHAPE: Formed with one roll.

EDGE PREPARATION: Produced with an attachment which can be fitted to all R180 machines.

FORMING HEMISPHERICAL ENDS: Hemispherical ends can be produced in two or more pieces from a dished cap which is welded to a frustum of a cone, and then flanged.

PRODUCTION OF THICKNESS DIAMETER HEADS: For the automatic pressing of dished ends. The unit consists of a main frame structure on which the support rolls may be displaced in three directions. The rolls are actuated by hydraulic motors, and their lift and rotate movements are synchronized with those of the ram of the press. The unit supports the blank throughout the entire dishing cycle, and no center hole is required for the location of the disc or other shape of plate being handled. The manipulator is designed for one-man operation and can be fitted to any make of hydraulic press.

The automatic manipulator provides the following advantages:

a. Reduced dishing time: The dishing time can be pre-determined in relation to the press strokes and the indexing of the blank, so that a consistent high performance is achieved by the press. Additionally, further major reductions in cycle time are obtained through pressing multiple blanks up to the maximum thickness capacity of the machine.

b. Reduced surface finishing times: During indexing, the blank is lifted clear of the lower die, thus preventing rubbing during rotation so that the finished end requires less polishing, etc.

c. Reduced contamination: When handling materials subject to contamination, this risk is considerably reduced for the reasons outlined under point b. Where dies of suitable material are available, contamination can be totally eliminated.

Manipulators are available for maximum weight of blanks up to 6000 Kgs.

ACCESSORIES AVAILABLE ON REQUEST FOR ALL FLANGING MACHINES
maximum díameter 8000 mm. - 27 -
WE MANUFACTURE Section Bending machines.
ALS : Bending rolls.

The original leaflets are for sale. A preview is shown. The price of the leaflet is on request.
Boldrini POCC flanging and dishing machines
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