Hayden
Fly Reels used the Type III Hard Anodising process to protect
your new Spey/Fly Reel.
MILITARY
GRADE - TYPE III HARD ANODIZING
All
Hayden Reels are available in Military Grade, Type III Hard
Anodising. This coating is far more durable than Type II
Anodising and eliminates "Boat Rash" (scratching
of the surface) and the need for regular servicing.
What
is the best protection for the aluminum?
Type
II Anodising is done by dipping the aluminum in an acid
bath which is at room temperature and then introducing an
electrical charge to the bath. The process "corrodes"
the surface of the aluminum and leaves it a dull silver
colour.
This
Anodizing process gives a protection to approximately 25
microns. The product is then dipped in a colour until the
required shade is achieved and then boiled to "set"
the colour. The problem is that the colour can be scratched
easily but this does not necessarily mean that the protective
coating is depleted.
By far
the best protection and hardest is to elect to use a Type
III Hard Anodise.
By using
a different acid and then reducing the temperature of the
bath to minus 6 degrees Celsius and increasing the electrical
charge, the process grows Aluminum Oxide into and onto the
surface of the aluminum and it has a minimum depth of 30
microns (Hayden reels are done to Military Grade, at 60+
microns) and a Rockwell C Impact Test of 60 gives an indication
as to the hardness of the coating. A hand file, which is
made from tool steel has a Rockwell C test of 72, therefore
this coating is very abrasive resistant.
The
only disadvantage is that it cannot be coloured. Depending
on the grade of aluminum, (6061 will always be grey) the
colour will be from grey to black and will be a soft satin
finish - anti flash.
Hayden
Reels are then polished to a beautiful soft shine, but this
is a time consuming process due to the hardness of the coating.