12 |
THIELE
Chain Company
|
Drop Forging
THIELE corrosion protection
As Tectyl and Corostar are not permanent coatings they do not provide suffcient protection for underground use,
especially when aggressive mine water is present. This is why THIELE has developed hot-dip galvanising (TZN)
technology for chains intended for operating conditions of this type.
During the hot-dip galvanising process a permanent corrosion-proof coating is formed on the surface of the
chain. This coating comprises two layers: an iron-zinc intermetallic phase and a solid zinc surface coating. This
protective layer is smooth, non porous, highly adherent and therefore abrasion resistant. Even those surfaces that
are exposed during underground service are still protected from corrosive attack. The phenomenon on which this
observation is based is known as electrochemical or cathodic galvanising protection.
Long-term observations show that hot-dip galvanised chains have a greatly improved service life and chain
failures are reduced dramatically.
3. Hot-dip galvanising (TZN)
Chain size
d x t [mm]
Article No.
Round Link
Chain
Article No.
Flat Type
Chain
Article No.
DUALINK-
Chain
14 x 50
F13195
--
--
18 x 64
F13212
--
--
19 x 64,5
F13350
--
--
22 x 86
F13402
--
--
24 x 86
F13483
--
--
26 x 92
F13499
F14971
--
30 x 108
F13657
F13773
--
34 x 126
F13820
F13808
--
38 x 126
--
F15052
--
38 x 137
F138972
F13893
F13917
42 x 146
--
F15040
F15015
48 x 144/160
--
F14951
--
48 x 152
--
F14957
F14954
Hot-dip galvanising is the only
effective and proven form of
corrosion protection for mining
chains.