|
Correct
fitting
Rivets
should be fitted and clenched in a planned sequence, commencing
at the centre of the shoe and working to a pattern towards
the ends of the shoe.
When
using a riveting machine, the actual air pressures used
have to be adjusted in the light of experience to accommodate
variation of rivet diameter and materials, but will typically
be between 4 and 6.2 bar (45 - 90 p.s.i).
Once
fitted, the rivet shank should have expanded to fill the
hole in the shoe platform. The rivet hole drilling in
the lining however is designed to be slightly oversize
in order to avoid this expansion of rivet shank stressing
the lining, the clamping of the lining being achieved
by trapping it between the shoe and the rivet head. To
this end a final inspection should be carried out to ensure
that not only are the rivet ends rolled over correctly
and neatly without cracking but that the whole clamped
assembly is tight and without any significant gaps between
shoe and lining. (Rivet tightness can be assessed by
lightly tapping the installed rivets with an inspection
hammer and the gaps by feeler gauge: These gaps should
be zero around the rivets between lining and shoe and
no more than 0.015mm (0.006") elsewhere.
Range
list
We
have over 300 BFMC (WVA Ref) of ready linings and over
200 reference unfinished Billets of commercial linings
in stock. We can also supply any size of rivets for the
the above range. Please feel free to ask us for our complete
range of linings and rivets. |
