TPT November 2010

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November 2010 85 ›
THE ART OF WELDING
2, rue Paul Beaupère - 44300 Nantes - FRANCE
Tel. +33 (0) 2 40 68 11 00
Worldwide leaders in manufacturing select
Polysoude for mechanised welding
solutions, wherever outstanding quality
and reliability is a must.
We offer technical expertise and a
commitment that guarantees optimum
performance.
Opt imum
perfOrmance
Guaranteed
50 Years of Excellence in Providing
Innovative Weld Technology
and Expertise.
Worldwide Organisation Provides
Support Next to You.
International Sales and Service,
On-Site Training and Maintenance
with Rental Options.
MECHanisEd wElding
MadE BY PolYsoudE
Customised sawing
and milling equipment
MASCHINENFABRIK Liezen und Gießerei GmbH (MFL) provides
customised sawing and milling equipment for tube manufacturers
all over the world. The company’s plate and stripe edge milling
machines are used for the welding seam preparation of ERW and
spiral pipes, containers and rail car construction.
Due to a number of enquiries from large-pipe manufacturers
MFL decided to develop the RFA 24/56 welding seam processing
machine, which mills the inner and outer welding seam of large-
diameter pipes over a length of 400mm. This process offers a
number of advantages compared to the manual grinding process.
The greatest advantage is that the milling process provides a
better quality of welding seam – an important criterion for the
delivery of large diameter tubes to Gazprom and other major
customers. The complete process is fully automatic.
The company’s cold circular sawing machines are used for
cutting stainless steel, high and low alloyed steel, structural
steel and non-ferrous metals in the form of billets, tubes, profiles
and plates. The machines are equipped with carbide tipped saw
blades that ensure high performance and a long service life.
The cutting machines are classified into single cut sawing
machines and layer sawing machines. The single cut sawing
machines are able to cut billets and single tubes with a diameter
from 30 to 800mm. The layer sawing machines are used for cutting
of tubes, I- and U-beams, sheet pilings and angles. The largest
layer sawing machine is equipped with a saw blade diameter of
2,200mm and has a layer width of 1.5m. Smaller layer sawing
machines are available, starting with a layer width of 650mm.
One new invention from MFL is a saw blade with exchangeable
carbide tips. The clamped carbide tips are the special feature of
this novel saw blade. Common saw blades have the carbides
brazed at the tooth. The carbides of the MFL saw blades are
clamped into the gap between the main body and the tooth.
The use of easily exchanged carbide tips removes the need
for investment in expensive grinding centres, and less basic
equipment is required because of the elimination of long transport
times for regrinding of saw blades.
Maschinenfabrik Liezen und Gießerei GmbH – Germany
Fax: +43 7613 8883 30
Email:
Website:
MFL’s HKA 2000
sawing plant