TPT July 2007

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Technology Update
34 July /August 2007
Braude, UK, is a specialist manufacturer
of non-corrodable heating and cooling
equipment for the highly corrosive liquids
found typically in pickling, plating, anodising
and other chemical processing operations.
The company’s expertise is in heating
aggressive and corrosive solutions that
conventional equipment cannot withstand.
All products are manufactured from high
integrity chemically inert fluoropolymers
(ie Teflon™), and have been designed to
ensure long life in aggressive solutions.
They are all manufactured to the highest
quality standards: Braude is an ISO 9001
registered company
Braude manufactures the Nautilus range
of tank heaters and Jet Stream external
heating and cooling systems. These
systems are particularly suitable for larger
scale pickling and processing operations.
The Nautilus tank heater consists of a
fluoropolymer element mounted on a
strong polymer frame for good chemical
resistance. The heater is immersed at a
suitable location within the process tank
and easily connected to the heating source
by means of sturdy flexible connections.
The Jet Stream is a complete system
comprising a non-corrodable fluoropolymer
heating/cooling element, external tank,
recirculation pumps and controllers for
temperature and system operation. It is
ideal for arduous heavy industrial pickling
and process applications where the heat
exchanger requires protection from damage
by the workload. This is often the case in the
steel, tube, wire and galvanising industries.
Both systems are suitable for use with
steam, hot water, and in some cases
thermal fluid. The element can also be used
with chilled water for cooling applications.
Each heat exchanger is made to suit the
tank in which it will be installed and the
company calculate the size of each unit
based on information supplied by the end
user.
Other Braude products include the Polaris
non-corrodable electric immersion tank
heaters, and the Thermaster, Levelmaster
and Tankmaster range of temperature and
liquid level controllers sealed to IP65.
Braude also produces a range of self-
priming chemical service pumps, suitable
for use with highly corrosive solutions such
as hydrochloric, hydrofluoric and sulphuric
acids – with flow rates up to 35m3/hr.
E Braude Ltd – UK
Fax: +44 1252 875281
Email:
Website:
Meeting precise requirements
for DOM mechanical tubing
Due to the increased requirements of
manufacturing on higher-value precision
engineered components, tube and pipe
specialist distributor Van Leeuwen Wheeler
is predicting a resurgence in the usage of
DOM mechanical precision tubing.
DOM mechanical is made from high quality
flat rolled steel which is formed, electric
welded and fully normalised with the inside
and outside welding flash removed during
the process. The inherent precision is
achieved when the tube is cold drawn over
a mandrel (hence DOM) which converts
the as-welded tube into a uniform precision
product with substantially improved
tolerances, surface finish, tensile strength,
increased hardness and good machinability.
› Mr Trevor Desmond of Van Leeuwen Wheeler
predicts the resurgence of DOMMechanical to meet
the needs of precision engineered components
Van Leeuwen Wheeler’s mechanical tube
specialist Mr Trevor Desmond says: “With
much of the traditional UK high volume
manufacturing moving to countries with
lower manufacturing cost bases, our
own manufacturing industry is much
more focused on added-value precision
engineered products. These place far higher
demands on the dimensional accuracy of the
feedstock and this is where DOMmechanical
really scores. In comparison to conventional
seamless tube, DOM mechanical offers
accuracy in terms of concentricity and
straightness. We are definitely starting to
see a migration of business from cold drawn
to DOM mechanical.”
Van Leeuwen Wheeler offers a full range
of DOM mechanical in both imperial and
metric sizes from 6mm to 200mm in various
grades and thicknesses, including heat
treated materials for bending applications.
Random off-the-shelf sizes can be supplied,
while the company also offers a specialist
cut-to-length service.
Van Leeuwen Wheeler Ltd – UK
Fax : +44 1384 487619
Email:
Website:
Heating solutions for corrosive liquids
Latest digital flaw detector for good signal to noise testing
Sonatest has launched the Powerscan 450P digital flaw detector, the next in the family
of new generation digital flaw detectors from Sonatest Ltd. Powerscan 450P is designed
to meet the needs of high penetration and good signal to noise testing requirements.
It has already received approval from Serco
Assurance in the UK for rail axle testing
and has been accepted by a world leading
forging company for critical inspection.
Evolving from the very successful
Powerscan 400, this model has been
enhanced with a new 450 volt square wave
pulser, improved low frequency filter bands
for 0.25MHz transducers and standard AVG
& DAC software.
Additional benefits are the new user interface, full screen expand mode and a lower
PRF setting. The ‘single shot’ acquisition processing enhances screen update speed
on low PRF, resulting in improved hand scanning response. The unit is housed in a
high strength lightweight plastic enclosure and uses lightweight batteries to significantly
reduce weight over the Powerscan 400.
Sonatest Ltd – UK
Fax: +44 1908 321323
Email: • Website:
› The new Powerscan 450P digital flaw detector