Version February 2018
10 EN HÜRNER CNC ECO 315 User’s Manual
HÜRNER Schweisstechnik GmbH
Nieder-Ohmener Str. 26
35325 Mücke,
Germany
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:
• Pipesareclampedintotheframe.
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.
• Themandatory and optionalcomponent traceabilitydata and
the data on the components are entered in the screen menus.
• Pipebuttsareworkedusingthepipefacingtool.
• Pipealignmentischeckedaccordingtotheinformationdisplayed
on the screen.
• Thetechnicaldataontheweldingprocessitselfareenteredorre-
used from the preceding welding operation, provided the manual
input of these data is enabled in the Configuration Menu.
• Theheatingelementisinsertedaftercleaningitandcheckingits
temperature.
• Aftertheheatingelementwasinserted,thepipescloseinauto-
matically on it at the predefined build-up pressure.
• Duringthebuild-upstagetheweldbeadbuildsup.Whenthe
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.)
• Themachinethenmovesonautomaticallytotheheatingstage.
• Aftertheheatingstage,themachineautomaticallymovesthe
movable carriage apart and the welder has to remove the heat-
ing element from in-between the butts.
• Aftertheremovaloftheheatingelement,themachineautomati-
cally closes the pipes in on each other.
Movement Pushbutton on Machine Chassis
This pushbutton that allows moving the carriage of the machine makes
welding easier for the operator when the hydraulic and control unit
is not next to the basic machine chassis. The pushbutton enables the
welder, without leaving the chassis during the welding process, to
confirm various states (e.g., end of butt facing, pipe offset check, bead
build-up, heating element insertion) that otherwise would have to be
confirmed by pressing the START/SET key on the control unit.
