The SR20 Stud Welding Kit is packed complete with a slide hammer and various electrodes. The kit is ideal for fast, efficient body repairs. Removes
dents quickly, without holes, or the need to remove interior trim. The gun is suitable for welding a wide range of nails, washers, screws and rivets. The SR20 (in
conjunction with electrodes 7 and 8) may also be used for heat shrinking to remove small dents and pimples in panels. The welder is for professional use
only in an industrial environment. It must not be used for any other purpose, as there could be serious difficulties in assuring the electromagnetic
compatibility in other environments. Further supplies of nails, washers etc. are available from your local dealer.
Contents:
1. Welding Gun.
2. Side Handle.
3 - 5. Nail, Screw & Rivet Electrodes.
6. Washer Electrode.
7. Heating Electrode.
8. Extension Electrode for use with items 6 & 7.
9. Washer Hook.
10. Slide Hammer.
11. Nails - Ø2mm.
13. Screws - M4.
12. Rivets.
14. Washers.
2. INTRODUCTION & CONTENTS
Power supply . . . . . . . . . . . . . . . . . . .230v 1ph
Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16A
Power at 50% . . . . . . . . . . . . . . . . . . . .0.8kVA
Max. welding power . . . . . . . . . . . . . . .2.5kVA
Max. short circuit current . . . . . . . . . . . .2500A
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . .5kg
Airborne noise level . . . . . . . . . . . . . .<70dB(A)
Vibration level . . . . . . . . . . . . . . . . . .< 2.5m/s
2
3. TECHNICAL SPECIFICATION
4. APPLICATIONS
SR20 - 3 - 010503
fig. 1
fig. 3
fig. 2
4.1.
Nails and washers
A nail or washer, depending on accessibility, is welded to damaged panel to enable the panel to be pulled back into shape with the
slide hammer. See figs. 5 & 6. The washer electrode (fig.1.6) has a magnet to hold the washer in place prior to welding
and should be used in conjunction with extension electrode (fig.1.8 & fig.4). When reshaping is completed, cut and grind
off nail or washer to give a smooth finish.
4.2.
Rivets
Rivets are used for attaching mouldings or similar items to panels. The rivet electrode has a magnet to hold the rivet in place
prior to welding (fig.2).
4.3.
Screws
Screws are welded to panels to provide mounting points for other equipment (fig.3).
4.4.
Heating
The heating electrode (fig.1.7) is used to locally heat and shrink out minor panel defects.
This electrode should be used in conjunction with extension electrode (fig.1.8).
5. OPERATING INSTRUCTIONS
p
WARNING! Ensure that you read and understand the safety instructions in Section 1.
Introduction
If you are not familiar with the SR20 or with stud welding, we recommend that you practice the following procedure before attempting any actual
task. When welding, you will find that the trigger operation time is very short. We recommend a period of 0.5 - 1 second. Leave approximately
1 minute between each use to allow gun to cool. Practice on a scrap panels before attempting the actual work. Proceed as follows:
5.1.
Welding
5.1.1. Disconnect from power supply. Screw side handle (fig.1.2) to left or right side of gun, as required.
5.1.2. Attach appropriate electrode for task (see Section 4). If using either of electrodes fig.1.6 and 7, also fit extension electrode fig.1.8, see fig. 4.
Note: Electrodes are copper, DO NOT over tighten or threads will be damaged.
5.1.3. Ensure that you check the following before you start:
a). Electrodes and extension electrode must be clean and without defect. Carefully remove any defect with a fine file or abrasive paper.
b). If the electrode is too worn and cannot be repaired, replace with a new one.
c). The panel to be welded must be clean and free from paint, grease or rust.
IMPORTANT! If the electrode, electrode holder, carrier contact face (fig. 4.A) and panel are not clean, dry and free from paint, grease,
rust etc. the weld will be poor and the welder may overheat, causing irrepairable damage to the casings.
fig. 4
