Ultimate Surface Performance Oil & Gas Applications www.hefusa.net [email protected]A Subsidiary of HEF Group HEF Group is the only global supplier of both Liquid Nitriding treatments and PVD/DLC coatings for engineered components. HEF Group through its global network of 60+ jobbing facilities in 20 countries, is one of the world’s largest suppliers or wear, friction and corrosion reduction treatments and coatings for precision components utilized for a diverse range of industries, including Automotive; Oil & Gas; Hydraulic and Pneumatic equip- ment; Industrial machinery etc. Liquid Nitriding is a thermo-chemical diffusion treatment that enriches the surface of steels and cast iron with Ni- trogen. The surface Compound Layer is com- posed of iron nitrides + special nitrides. The area below the compound layer, is the Diffusion zone where Nitrogen dif- fuses into the iron lattice to form a solid solution. HEF Group’s trademarked family of Liquid Nitriding processes: ARCOR ® : ARCOR V, ARCOR C, ARCOR N, ARCOR DT, SURSULF ® ,… MELONITE ® : TF1, QP, QPQ, TENIFER ®, TUFFTRIDE ® ,... LIQUID NITRIDING BENEFITS Hard (600-1200 HV) surface layer pro- vides very good wear resistance Good frictional properties Excellent scuffing / seizure protection (adhesive wear) Excellent corrosion protection Good surface fatigue resistance Decorative black surface Liquid Nitriding (LN) / Salt Bath Nitriding (SBN) / Nitrocarburizing
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Ultimate Surface Performance - HEF · 2018. 8. 6. · ARCOR® Liquid Nitriding process from HEF – significantly higher corrosion resistance ARCOR® Liquid Nitriding, coupled with
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HEF Group is the only global supplier of both Liquid Nitriding treatments and PVD/DLC coatings for engineered components.
HEF Group through its global network of 60+ jobbing facilities in 20 countries, is one of the world’s largest suppliers or wear, friction and corrosion reduction treatments and coatings for precision components utilized for a diverse range of industries, including Automotive; Oil & Gas; Hydraulic and Pneumatic equip-ment; Industrial machinery etc.
Liquid Nitriding is a thermo-chemical diffusion treatment that enriches the surface of steels and cast iron with Ni-trogen. The surface Compound Layer is com-posed of iron nitrides + special nitrides. The area below the compound layer, is the Diffusion zone where Nitrogen dif-fuses into the iron lattice to form a solid solution.
HEF Group’s trademarked family of Liquid Nitriding processes: ARCOR® : ARCOR V, ARCOR C, ARCOR N, ARCOR DT, SURSULF®,… MELONITE® : TF1, QP, QPQ, TENIFER®,
TUFFTRIDE®,...
LIQUID NITRIDING BENEFITS
Hard (600-1200 HV) surface layer pro-
vides very good wear resistance Good frictional properties
Excellent scuffing / seizure protection
(adhesive wear)
Excellent corrosion protection
Good surface fatigue resistance
Decorative black surface
Liquid Nitriding (LN) / Salt Bath Nitriding (SBN) / Nitrocarburizing
ARCOR® LIQUID NITIRDING: PROPERTIES
QPQ Liquid Nitriding Process—well established for Oil & Gas applications
This Re-oxidation step can be replaced by
a more cost-effective IMPREGNATION step -
whereby the surface sub-micron porosity is
impregnated with especially formulated
and HEF proprietary oils & polymers, which
significantly improve corrosion protection &
run-in characteristics
ARCOR® Liquid Nitriding process from HEF –
significantly higher corrosion resistance
ARCOR® Liquid Nitriding, coupled with post-nitriding impregna-
tion, can yield 500+ hours of salt-spray resistance - 500% su-
perior than chrome plated & 250% superior than gas nitrided
cylinders and rods
CORROSION RESISTANCE
ARCOR® LIQUID NITRIDING: PROPERTIES
NOTE: Salt Spray tests are suitable only for compara-
tive and relative evaluation of corrosion resistance. The salt spray hours
achieved are a function of several factors, including: steel grade; geometry of the part being test-
ed; and surface treatment/coating.
Impregnation
after ARCOR
process
1045 Steel
4140 Steel
SALT SPRAY Per ASTM B117
CORROSION TESTING RESULTS
– 500 HOURS
ARCOR® LIQUID NITRIDING: PROPERTIES
FRICTION
ARCOR® Liquid
Nitriding process
from HEF – lower
friction coefficient 0
0.1
0.2
0.3
0.4
0.5
Hard Chrome plating Case Hardening ARCOR LiquidNitriding
Fric
tio
n C
oef
fici
ent
No lubrication
SAE 30 lubrication
WEAR RESISTANCE
0
100
200
300
400
500
600
700
800
900
0 500 1000 1500 2000
WEI
GH
T LO
SS (
gms.
)
TEST DISTANCE (cm.)
UNTREATED SAE 1045
PLASMA NITRIDING + OXIDATION
GAS NITRIDING
ARCOR LIQUID NITRIDING (Q)
ARCOR LIQUID NITRIDING QPQ
ARCOR® Liquid Nitriding from HEF – superior wear-resistance
HEF GROUP: GLOBAL SUPPLIER OF A DIVERSE RANGE OF SURFACE
TREATMENT TECHNOLOGIES FOR THE OIL & GAS INDUSTRY
Network of Liquid Nitriding & PVD Coating Facilities: 60 facilities in 20 countries. Capability to replicate technology options and custom-er specific process details across the global network.
Several global facilities certified by major O&G OEMs for various treatments such as QPQ Liquid Nitriding; Industrial fluoropolymer varnishes and coatings; phosphating treatments etc.
Extensive and component-level tribology testing capabilities