FIELD OF INVENTION
The present invention generally relates to sub-merged arc welding machine for
making pressure part pipe through butt joint for high pressure boiler
applications. More particularly, the invention relates to an automated flux
handling device in a sub-merged arc welding machine.
BACKGROUND OF THE INVENTION
In the process of sub-merged arc welding, a flux covers a weldment. The
molten flux is then transformed into a solid slag. However, a portion of the flux
remains unaltered. The solid slag including the portion of non-transformed flux is
usually collected in a tray. After a sieving of the mixture, the usual flux is
collected and reused. In this process, the wastage of flux material is more, and
creates an un-safe condition in the working environment. One manpower is
exclusively required for flux and slag handling.
OBJECTS OF THE INVENTION
It is therefore an object of the invention to propose an automated flux device in
a sub-merged arc welding machine.
A further object of the invention is to propose an automated flux handling device
in a sub-merged arc welding machine, which is economic, easy to operate, and
keeps the environment safe and clean.
SUMMARY OF THE INVENTION
Accordingly, the flux handling device in a sub-merged arc welding machine
allows collection of the slag and flux in separate trays. Mix-up of the flux and
slag material is totally avoided by the device. There is no need for pre-heating of
the flux material so collected, being in the form of fine flux and instantly usable.
The present invention also provides clean environment and eliminate
engagement of man power for cleaning the surroundings. The manual particle of
separation according to the prior art is totally eliminated by the present
invention.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Figure 1 - shows a prior art flux handling device in a sub-merged arc welding
machinefor particle separation.
Figure2 - shows an improved flux handling device in a sub-merged arc welding
machinefor particle separation accordingto the invention.
DETAILED DESCRIPTION OF THE INVENTION
The device of figure 2, consists of a plate (01) located at 60 deg taper to a top
vertical plane provided with a gap of 25 mm in respect of a welded mesh (02)
located 65 deg taper to a horizontal plane. The mesh (02) having a sliding
movement to remove any sticking material from the mesh. During welding
operation, the flux material and the slag material are allowed to fall on a
structural body (05). Dueto an opening configured in the welded mesh (02),
only flux material is allowed to fall towards a first outlet pipe (03) which is
collected in a container (not shown). Due to the gap of 25 mm, the slag material
alone falls towards a second outlet pipe (04) which is collected separately. The
flow of flux and slag material is further smoothened by providing at least two
numbers of additional taper plates (06). This also ensures prevention of any mix
up of the unused portion of the flux and the slag.
WE CLAIM:
1. An automated flux handling device in a sub-merged arc welding machine,
comprising:
- a substantially square type hollow structural body (5) with a plurality of
support legs, the structural body allowing the slag material and flux
material to fall on the inner surface during opening mode of the
welding machine;
a plate (01) located at a position tapered to a vertical plane;
a welded mesh (2) slidably movable and disposed at a location tapered
to a horizontal plane;
a first outlet pipe (3) and a second outlet pipe (4) provided to the
structural body (5),
characterized in that a gap of about 25 mm is maintained between the plate
(01) and the welded mesh (2) and in that an opening is configured in the
welded mesh (2) so that the flux material exit via the first outlet pipe (3), and
the slag material flow through the second outlet pipe (4).
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2. An automated flux handling device in a sub-merged arc welding machine
substantially as herein described and as illustrated in the accompanying
drawings.