Overview Of The Welding Process - Hürner CNC ECO 200 Manuel Utilisateur

3.5

Overview of the Welding Process

After the thermoplastic material, the pipe diameter, and the wall
thickness were entered, the machine computes all parameters that
are critical for the welding process, taking into account the selected
welding standard (e.g., DVS, PIPA, NEN). The entire welding process
is automatically controlled, monitored, and its data logged and saved
to a welding report.
The saved welding data can subsequently be downloaded to a USB
mass storage media as a short or extended report in the PDF format
or the HÜRNER database format DataWork. Parameters applicable to
the welded joint and traceability data on the processed parts can be
entered either on the alphanumeric keypad on the front panel or read
from a transponder chip card. Reading bar codes with a scanning pen
or handheld scanner is available optionally.
For your convenience, the machine can be specifically costumized in
a Configuration Menu (see section 4.2).
The welder performs the welding process in the following manner:
• Pipes are clamped into the frame.
If pipes with an outside diameter smaller than the maximum
dimension of the machine are welded, select the reducer set
needed. The 8 individual inserts of the set that matches the out-
side diameter of the pipe to be welded have to be attached to
the clamps of the machine chassis using the provided bolts.
• The mandatory and optional component traceability data and
the data on the components are entered in the screen menus.
• Pipe butts are worked using the pipe facing tool.
• Pipe alignment is checked according to the information displayed
on the screen.
• The technical data on the welding process itself are entered or re-
used from the preceding welding operation, provided the manual
input of these data is enabled in the Configuration Menu.
• The heating element is inserted after cleaning it and checking its
temperature.
• After the heating element was inserted, the pipes close in auto-
matically on it at the predefined build-up pressure.
• During the build-up stage the weld bead builds up. When the
bead size, as required under the selected standard, is achieved,
the welder has to confirm successful bead build-up. (If Automode
(see Section 4.2) is enabled, the successful bead build-up is de-
tected automatically; the machine computes the build-up time
depending on the parameters of the parts to be jointed.)
• The machine then moves on automatically to the heating stage.
• After the heating stage, the machine automatically moves the
movable carriage apart and the welder has to remove the heat-
ing element from in-between the butts.
• After the removal of the heating element, the machine automati-
cally closes the pipes in on each other.
10
EN
HÜRNER CNC ECO 200 User's Manual
H Ü R N E R S c h w e i s s t e c h n i k G m b H
Nieder-Ohmener Str. 26
35325 Mücke, Germany
Version February 2018