5. Welding machines
At first glance, a friction machine is characterized by the maximum forging force it can produce. This parameter provides an indication of machine size and capacity. When welding low-alloy steels, the average unit forging force is 8 to 12 daN /mm 2 (table 2 ).
This allows us to deduce :
the maximum solid or tubular cross-section that can be welded by the machine;
power and spindle speed for a corresponding full section.
By way of example, table 6 shows the characteristics of a number of piloted friction-welding machines....
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Welding machines
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