Principle Of Operation; General Information; Information On Welding Bends/Tees; Operation - Hürner EasyWeld 110 Mode D'emploi

4

Principle of Operation

4.1

General Information

The heating element butt-welding process is a type of joint in which
two components are plasticized by contact with a heating element
and then pressed together with a defined force. The seamless joint
is achieved through allowing them to cool. It includes the following
operating steps:
• If the components to be jointed are of a smaller diameter than the
size of the clamps, the appropriate reducer inserts are installed
in the clamps.
• The clamps are prepared for the desired joint: straight or elbow
of one of the available angles.
• The components are secured in the clamps and aligned to each
other.
• The butts of the pipes/fittings are faced and when facing is com-
pleted, the butts are checked for proper alignment.
• The butts of the components are pressed against the heating ele-
ment, to be heated as defined by the applicable welding time.
• The heating element is removed from in-between the components
and both, pipes or fittings, are pressed against each other under
the defined force and allowed to cool down.
No external forces must be applied prior to the components
having completely cooled down.
Important
4.2

Information on Welding Bends/Tees

As a preparation of the welding process, the components have to be
cut to the desired angle of the joint. To joint a tee, all three compo-
nents require pre-cutting at a 45 deg. angle. Then the first jointing
operation at an angle can be performed as described above. When
welding a segmented bend, the next joint can be made right after the
first joint, provided the segment pieces were pre-cut at the correct
angle. If not, the next piece has still to be prepared by cutting it at the
angle needed for the joint with the preceding segment, as previously
explained. Then the next segment joint is possible. When jointing
tees, after the firt operation, the elbow jointed at right angles has
to be prepared for the next step by cutting it at a 45 deg. angle (see
figure on the right). When jointing tees or segments, the operation
is performed exclusively on the user's side of the machine.
The general information on the welding process also holds for seg-
mented-bend and tee joint, as described below. However where ap-
propriate, additional information on them has been included below.
5

Operation

5.1

Preparing the Welding Process, Clamping the Components

The butt-welding machine is available in two versions: EasyWeld 100 for
straight and segmented-bend joints and EasyWeld 110 T for straight,
segmented-bend joints, and tees (90 deg. branch-off).
For bend segments, the clamps must be rotated to make the desired
angle (see the angle scale imprinted below the clamps). To change the
angle of the jointing setup, loosen the Allen screw in the top surface
of the base of the clamp, on the outside of the clamp itself, on both
sides, then retighten it.
8
EN
HÜRNER EasyWeld 110 (T) User's Manual
H Ü R N E R S c h w e i ß t e c h n i k G m b H
Nieder-Ohmener Str. 26
35325 Mücke, Deutschland
Version September 2016