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S. K. Das et al.
1.6.1 Linear Welding
1.6.1.1 Dedicated Setups for FSW
Machines for carrying out FSW is available in the market. These setups are equipped
with proper bed, suitable jig and fixtures for fixing the workpieces as well as the
welding tool. The tool can normally be given motion in three directions (X, Y and Z).
There are sensors to measure forces encountered by the tool in various directions and
to monitor temperature (at the weld zone) and a host of other parameters, viz. spindle
speed, displacement of the tool, etc. There is also provision to provide inclination
to the tool. Cooling systems are provided for safeguarding the machine components
which have direct metallic contact with the tool which will be subjected to a very high
temperature. The entire machine is generally controlled numerically by a computer
system. The advantage of using such machines normally reflects in higher quality
welds.
Now, the four important process parameters controlled by FSW are as follows:
(a) Position of the tool
(b) Orientation of the tool
(c) Load applied
(d) Rotational speed of tool
(e) Travel speed of tool
The selection of the equipment is based on the range of these parameters that
are defined for the materials that are planned to be welded. Figure 1.8 displays a
photograph of a linear FSW setup.
Fig. 1.8 Photograph of a linear FSW setup
S. K. Das et al.
1.6.1 Linear Welding
1.6.1.1 Dedicated Setups for FSW
Machines for carrying out FSW is available in the market. These setups are equipped
with proper bed, suitable jig and fixtures for fixing the workpieces as well as the
welding tool. The tool can normally be given motion in three directions (X, Y and Z).
There are sensors to measure forces encountered by the tool in various directions and
to monitor temperature (at the weld zone) and a host of other parameters, viz. spindle
speed, displacement of the tool, etc. There is also provision to provide inclination
to the tool. Cooling systems are provided for safeguarding the machine components
which have direct metallic contact with the tool which will be subjected to a very high
temperature. The entire machine is generally controlled numerically by a computer
system. The advantage of using such machines normally reflects in higher quality
welds.
Now, the four important process parameters controlled by FSW are as follows:
(a) Position of the tool
(b) Orientation of the tool
(c) Load applied
(d) Rotational speed of tool
(e) Travel speed of tool
The selection of the equipment is based on the range of these parameters that
are defined for the materials that are planned to be welded. Figure 1.8 displays a
photograph of a linear FSW setup.
Fig. 1.8 Photograph of a linear FSW setup