Forming Technology

Adress of plant: Kalteiche-Ring 39 • 35708 Haiger, Germany

Postal address: P.O. Box 100203 • 57002 Siegen, Germany • Hagener Straße 103 • 57072 Siegen, Germany

Phone ++49/0271 401- 4380, - 4387 • Telefax ++49/0271 401-4362 • e-mail: post@dds-forming.com

www.dds-forming.com

ProductsForging and Handling Technologyn Forging Manipulators

n Transport Manipulators

n Tool Manipulators

n Ingot Transport Cars

n Turntables

n Tool Changing Devices

n Handling Machines

n Heavy-Load Robots

Technology for Ferro-Alloy Plantsn Charging Machines

n Stoking and Distributing Machines

n Measuring Technology

Skimming Technologyn Skimming Machines

n Ladle Tilters

Filter Technologyn Filter Automats

n Combi Filters

n Multicartridge Filters

n Separators

Manufacturing Technologyn TMT Tapping Machinery

n TMT Measuring Equipment

n Other Special Equipment

Forming and Bending Technologyn Heavy Duty Plate Forming Machines

n Induction Pipe Bending Machines

n Hydraulic Press Control Change - Retrofitting

n Special Presses – Metal Forming Machines

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Forming of metal...

DANGO & DIENENTHAL Siegen (DDS)

has founded a new devision company,

DANGO & DIENENTHAL Umformtechnik

(DDU). The target being to extend

the group‘s existing range of machine

building capabilities with engineering and

manufacturing of machines for cold and

hot forming of metal plates, warm forming

of pipe (Induction Pipe Bending), as well

as other special forming machines, retrofit,

modification and service of hydraulic and

IHU presses (Hydroforming).

...and Inductive Pipe Bending Machines

• 3 Roll Plate Bending Machines

• 4 Roll Plate Bending Machines

Our range of services:

• Individual consultancy

• Engineering and planning of complete machines and plants

• Manufacturing and erection

• Commissioning

• After sales service

• Manufacturing and erection

• Commissioning

• After sales service

Bends can be manufactured with high precision and minimal tolerances.

DDU IBM 400S

L 16,000 mm

W 6,500 mm

H 2,500 mm

L 12,000 mm

W 7,900 mm

H 7,300 mm

DDU 4RBM 180

...with Heavy Duty Plate Roll Bending Machines...

Our range of services:

• Individual consultancy

• Engineering and planning of complete machines and plants

– for pipe diameter up to 1626 mm

– wall thickness up to 120 mm

– small radius bending

Heavy Duty Plate Roll Bending Machines type DDU 4RBM/DDU 3RBMEngineering and planning of complete ma-

chines and plants. The bearings of our Heavy

Duty Four Roll Plate Bending Machines, due to

the exceptional loads exerted on the rolls,

have been specially simulat-

ed and designed by the world

renowned bearing manufacturer

SKF. The top roll is designed

to absorb forces of up to 4000 t.

With maximum plate width

of 4000 mm, a thickness of

145 mm, with an ID of 1500 mm

can be rolled with yield of 360

N/mm². 3-Roll versions are

also available.

1.1% Top roll dia. bending

Plate width up to 4,000 mm with thickness up to 140 mm

Four - Roll Plate Bending Machine DDU 4RBM for plate up to thickness of 190 mm at 2 m width

Ladle TiltersLadle Tilters Inductive Pipe Bending Machines

The induction bending of pipe is a method of forming pipe using

mostly automated machines, a continuous progressive form-

ing process, whereby a pipe is form bent in a narrow heated

zone. The leading end of the pipe is clamped in the pipe locking

device, fitted to the bending arm. The pipe temperature is in-

creased to a predetermined value by an inductor ring. The axial

bending force is applied to the pipe by the hydro-mechanically

driven clamping stock. During the bending operation the bend-

ing arm rotates around its fulcrum to a preset bending radius.

The force created makes the pipe follow the predetermined radii.

Inductive Bending Machine for pipe-diameters to 1,626 mm, thickness

to 120 mm.

DDUIBM 400S Pipe OD. 114,3

to 457.2mm, Th. max. 60mm

DDUIBM 900s Pipe OD. 406.4 to 914.4mm, Th. max 60mm

Loading

Bending

Rotation

Clamping

S Bending

DDUIBM 800 Pipe OD. 114,3 to 812.8mm, Th. max. 80mm

DDUCIBM 200S Coi l Forming Machine

The

Inductive

Pipe Bend-

ing Machines of

Dango & Dienenthal

are designed to au-

tomatically bend ferrite

as well as austenitic pipe.

They are capable of pro-

ducing single bends, 2 dimensional ‘S’ and 3-dimensional bends.

The advancing clamping stock can be equipped with a pipe clamp

which can be used on a range of pipe diameters without the need for

time consuming tool changes. The machine can also be equipped

with a rear end automated loading system.

Hydraulic Press Retrofitting Modernisation and Control Change

Disassembly and complete re-installation of presses

at new locations can be carried out as a turn-key

operation.

• Hydraulic blocks and control systems as well as

piping and old cable systems can be, if necessary,

completely replaced.

• Overhauling of old, building and installation of new

intensifiers.

• Modernising oil and water systems, is also in our

scope of supply.

• Also included in Dango & Dienenthal modernisa-

tion scope is the replacement of the complete

press control cabinets.

The retrofitting process of Dango & Dienenthal can encompass

from as little as changing cylinder and intensifier seals to the

replacement of the existing “Control“ axis by a newly developed

HydAx16 control and regulation software. This universal soft-

ware package is used for the simultaneous control and regula-

tion of up to 16 hydraulic, electric or pneumatic axes. For pro-

cess control, there is provided a clear display of all axes with

actual position, pressure and force values. All process data can

be displayed in X Y diagram form, thus enabling fast, accurate

and detailed process analysis. This makes it possible to carry

out production steps with across the axes conditions. Work

processes can be stored and called up. Step chains can be

provided with different monitoring and abort criteria. As such,

process safety is warranted with the risk of damage prevented.

Complete mechanic overhauling utilising existing structures

Replacement operator’s panel

Complete control system modernisation and overhauling

Complete hydraulic system modernisation and overhauling

Clad pipe after calibration

Clad Pipe and Clad Tee Technology

Initial situation prior to pipe calibration

Dango & Dienenthal plant in Siegen, Germany

T-piece blank after the hydroforming process

Our pipe calibration machines are designed to

mechanically clad two pipes of different materials,

i.e. one ferritic outer pipe and one austenitic inner

pipe, with or without a two-piece closed tool, by

means of high internal fluid pressure. The pipes

thus produced meet the required diameter, round-

ness and straightness tolerances.

This production method has a considerable cost

advantage over metallurgical clad pipe. Depend-

ing on the pipe diameter, multiples pipes can be

calibrated simultaneously in one tool. For the cali-

bration of non-round hollow components our high

pressure forming machines can also be used.

Dango & Dienenthal Umformtechnik develops and

builds machines for the production of T-fittings and

elbows. In our T-fittings machines the pipe to be

formed is pressed in a tool by means of a cold

forming method with high internal fluid pressure,

into the desired fitting shape.

The requirements of a costly pre-heating, as

required by other production methods, is thus de-

leted.

We offer overhauling and retrofitting of fitting ma-

chines (including those from other makers) to im-

prove the efficiency. We are in addition in a posi-

tion to design and supply tools for the production

of fittings / clad pipe fittings and other hollow com-

ponents.

Clad pipe without full length tool

T-Piece after forming process in the tool