Wrap Around Dies
are available in three types:
Fine Toothed Steel Dies:
For low to ultra high torque applications on carbon steel
tubulars including tubing, casing, and drill pipe.
Smooth Faced Aluminum Dies:
For low to moderate torque applications
on fiberglass and corrosion resistant alloy (stainless steel)
tubulars.
GRIT FACE Dies: For
low to high torque applications on fiberglass and corrosion
resistant alloy (stainless steel) tubulars where the use
of steel dies is prohibited as well as on carbon steel tubulars
where reduced marking is desired.
Valuable: Used
to protect CRA and expandables tubulars from damage and
corrosion.
Innovative: Continuous
research and development keeps pace with advancing technology
in the field.
Universal: The
ONLY dies and inserts that are adapted to allow any handling
tool to be used with expandables or CRA tubulars in compliance
with API, ISO and NACE recommendations.
Field tested:
• Used on tubulars from 1.06”
to 24”.
• Heaviest string run to date weighs in excess of
400 tons.
• More than a decade of proven experience.
GRIT FACE™ die
and insert coating system combines the use of extremely
hard granular particles, high strength corrosion resistant
brazing materials and application processes which insure
optimum dimensional control.
Tungsten Carbide granular particles are graded
by size and shape to provide uniform granules with desired
geometry. Different particle sizes are selected based upon
application. Coatings on smooth surface dies use larger
particles than the coatings applied to dies which have machined
teeth. Coating thicknesses for small particles are approximately
0.010". Thicknesses for large particle coatings is
approximately 0.025" thick.
Use of grade C-4 tungsten carbide refractory
material controls the chemistry of the granular particles
to prevent iron contamination. The Tungsten Carbide particles
are metallurgically bonded to the die substrate using a
high strength Nickel/Chrome brazing compound containing
83% nickel, 6.8% Chromium, 4.2% Silicon and 3% Boron. The
remaining 3% balance of materials consists of a variety
of trace elements including a small percentage of iron.
It is important to note these materials are alloyed together
at extremely high temperatures so there is no free iron
available to contaminate CRA tubulars.
The Tungsten Carbide granular particles and
brazing material are applied in controlled quantities using
proprietary dispersion processes which align the particles
and insure uniform distribution of materials in a single
layer. The quantities of materials used insure the particles
are securely fixed to the substrate but left with enough
exposed surface to precisely grip oilfield tubulars.
Brazing of the components takes place
at 1800 degrees Fahrenheit in a controlled atmosphere furnace
where temperatures and times are precisely controlled. Mechanical
properties of the die or insert substrate are controlled
using a combination of pre and post-brazing heat treatment
processes.
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