3.3 Technical Specifications; Principle Of Operation; Operation; Preparing The Welding Process, Clamping The Components - Hürner HWT 160-M Manuel Utilisateur

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
3.3 Technical Specifications
HWT 160–M
Operating Range
Suitable Materials
Pwr Supply Heat. Element, Facing Tool
Carriage Stroke
Maximum Power Input
Dimensions of Basic Machine
Dimensions inclusive of stand and
transport box for reducers
Weight inclusive of stand, reducers
and transport box for reducers
4

Principle of Operation

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 straight joints or elbow joints of
15 degrees.
• 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
5

Operation

5.1

Preparing the Welding Process, Clamping the Components

The butt-welding machine can be used for straight and segmented-
bend joints. For bend segments, the clamps must be rotated to make
a 15 degree angle between them. This is achieved by the placing of
the clamp positioning bolts in their fastening slots.
Adjust the clamps as appropriate for the intended jointing operation
and make sure that the bolts are tightly fastened in their slots.
Then secure the components to be worked in the clamps. If their size
is smaller than that of the clamps, use the appropriate reducer inserts
for the clamps prior to clamping them. Pipes will be supported by the
pipe supports at the far ends of the clamps. If the component diameter
is small, the height of these supports must be adjusted.
Version January 2018
32 - 160 mm O.D.
PE, PP, other thermoplastics
230 V, 50/60 Hz
130 mm (5-1/8")
1.8 kW
730 x 430 x 580 mm (2' 4¾" x 1' 5" x 1' 2¾")
730 x 550 x 1200 mm
(2' 4¾" x 1' 9 / " x 3' 11¼")
5
8
62 kg (136 lbs.)
HÜRNER HWT 160–M User's Manual
7
EN