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Welding Equipment
E.Mail
E N G I N E E R I N G
M A N A G E M E N T
S E R V I C ES s.r.l.
Via B. De Osa 6/8 – 24124 BERGAMO (ITALY)
Tel. ++39-035-21.10.19 Telefax ++39-035-22.31.03
THE LEADING INDEPENDENT
ENGINEERING
MANAGEMENT
SERVICES s.r.l. EMS
CONSULTING COMPANY FOR
SEAMLESS AND WELDED PIPE PLANT
PROJECTS – NEW AND REVAMPING
ALMOST 30 YEARS WORLDWIDE
EXPERIENCE IN THE PIPE PLANT
PROJECT SECTOR
ADVISOR OF THE MAIN STEEL PIPE
PRODUCERS IN THE WORLD
ENGINEERING, DESIGN AND TOP
MANAGEMENT ADVISORY SERVICES:
RELIABLE, EFFICIENT AND
RESPECTFUL OF TIMES AND COSTS
MAIN SERVICES:
9 BUSINESS PLANNING
9 MARKET STUDIES
9 FEASIBILITY STUDIES
(TECHNICAL / ECONOMICAL)
9 PLANT CONSTRUCTION BUDGET
9 ECONOMIC FINANCIAL ASSESSMENT
FOR BANKABILITY
9 PROJECT MANAGEMENT / CONTROL
9 PLANT ERECTION ENGINEERING
9 PLANT ELECTRO-MECHANICAL DESIGN
9 EQUIPMENT SPECIFICATION AND
ASSISTANCE TO EQUIPMENT
PROCUREMENT
9 QUALITY MANUALS AND PROCEDURES
9 TRAINING FOR PRODUCTION AND
QUALITY MANAGERS
9 EVALUATION OF COMPANY ASSETS
(INDUSTRIAL / INTANGIBLE)
9 EVALUATION OF THE
ECONOMIC VALUE OF COMPANIES /
BUSINESS UNITS
Larikka CylinWeld –
orbital welding the
other way around
A COMMON problem for all manufacturers is the geometry of the
joining point of two tubular parts. This joining point turns into a
continuously changing arc, which follows the surface of the main
pipe. The arc of cutting branch pipe is identical to the arc of the
main pipe. These arcs joined together form the joining surface
which is to be welded. In addition to continuously changing arc
the joining point of pieces to be welded form an angle which
changes between 0-90°. Controlling the full penetration of the
weld and smoothness of the inner surface is difficult causing lots
of expensive after-work.
In order to eliminate the welding and after-work problem
several pipe branching methods have been developed where
a collar is formed to the branch’s joining point and this way the
branch location resembles the end of a straight pipe. This type
of joint is easily welded manually and for this kind of welding
there are several good orbital welding equipment which produce
qualitative results on-site.
However, as the pipe
diameters get smaller and
the wall thickness in relation
to pipe’s diameter grows, ie
becomes thicker, there are
no working collaring methods
(for branching) available. For
manufacturing this kind of
“small” Tees a new welding
method has been developed.
This welding method is
named Larikka CylinWeld.
The name is derived from
the words cylinder internal welding, which describes the internal
approach to welding process. Larikka CylinWeld is excellent for
manufacturing tubular parts. As the joining surfaces of two round
parts form a mathematical pattern the simplest approach is from
inside and on the central line of either tubular part.
Larikka CylinWeld utilises the TIG-welding method and the
welding takes place inside the tubular part. The welding process
is fully automatic and the inner surface quality of the weld area is
smooth. This is the result of the light arc travelling over the sharp
corners of the joining point – the corners melt forming a round
corner. Further, the root is on the part’s outer surface making the
visual check of full penetration of the weld easier.
Larikka CylinWeld is also very suitable for welding of collared
and straight seams. Larikka CylinWeld is applicable for the welding
of single parts where the part rotates and the welding is down-hand
welding, which is theoretically the most ideal welding situation. With
Larikka CylinWeld it is also possible to weld long manifolds. The
equipment’s functions can be applied so that the pipe is stationary
and the electrode rotates inside the pipe. The operating range of
Larikka CylinWeld is wide. The smallest diameter is 4mm and the
largest 200mm, and in special cases can be even larger.
Larikka Ltd – Finland
Fax: +358 20 712 1449
Email:
Website:
The Larikka CylinWeld