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KCC (Chromium Carbide)
KCC (Chromium Carbide):
A process that Chromium Carbide (C-Cr) is chemically formed in the high temperature vacuum device and then in infiltrated into the matrix. Excellence in abrasion resistance with high hardness (> HV 1700), chemical resistance and lubrication with friction coefficient less than 0.5
KCC process in an in-situ CVD process with resource metal reaction in chamber
KCC make Nano carbide dispersion in the coating layer during the process.
KCC was coated 3-dimentional layer including hole and surface of the products.
Mechanical Properties:
Depth of hardened layer: 50㎛
Surface hardness: 1500Hv min.
Friction Coefficient around 0.2 compared to about 0.7~0.8 (Raw Material
Chemical Properties:
Salt spray test 300 hours without pitting
Acid resistance test 100 hours without corrosion
Alkali resistance test 100 hours without corrosion
Applicable Products:
Valves, Pumps, Elbows, Pump Impeller, Ball Valves, Crusher hammer, Sleeve, Bolts & Nuts etc.
Table for Hardness Change:
KCC Treatment SUS304 SUS316 SUS630 SCM440 SUJ2 S45C SKD11 Before Treatment (HV 0.10)
250 400 After Treatment (HV 0.10)
1,250 1000 800 1,700 1,700 1,700 1,100 Salt Spray test of raw material
Corrosion after 3 hours
No Corrosion Corrosion after 3 hours Salt Spray test after KCC Treatment
No Corrosion A tiny corrosion after 60 hours Corrosion does not progress anymore
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KZC (Zinc Ceramic)
KZC (Korean Zinc Ceramic):
Cr ion-free eco-friendly coating with fine Zinc particles
Use of dense-rich flakes over competitors
Enhanced surface quality and corrosion resistant
Eco-friendly/heavy metal free/toxic metals-free
Excellent chemical resistant/heat resistant (600℃)
Corrosion prevention due to dual metal bonding
Over 1500 hrs. corrosion resistant with ultra-thin (6~7㎛) film under salt water test
Sacrificial protection with rich Zinc flakes
Excellent weld ability
Applications:
Valve Refurbishing
Waste Bolt Refurbishing
Surface coating for Heavy Engine Parts
Abrasion resistant coating for cutting disk
Performance improvement for electronic parts
Spec. modification for Deck-unit bolts.
Coating for Oil, Gas, water pipelines.
30% higher hardness and long life time achieved over Powder painting, thus rendering improved cutting disk performance and abrasion resistant by ultra-thin coating capability of ceramic coating.
Replacing hot dip galvanized or SUS bolts for deck-unit application with ceramic coating.
Cost saving by shortening assembly time, not using poor thickness uniformity of galvanized bolts and by replacing expensive SUS bolts.
Classification KZC Hot Dip Zinc Pre-processing Acidizing Blasting Grease removing Acid dip Coating Dip Spin, Drag Spray ZN AL Liquid soak Ferrous & Nonferrous Binding Hardening/Chemical Binding Metallic Binding Film(μm) 10~20μm 50~300μm Corrosion Control (HR/SST) Over 1,500 Hours SST 360 Hours Excess Moisture Tolerance (ASTM D2247) Over 1,000 Hours – Metal Powder Content 70~80% 50% Weldability (Co2, Tig) 10 5 Heat Resistance 450 °C – Environment Regulatory Substances No (Cr6+, VOC) Hydrogen Embrittlement Binding Satisfactory Moderate (over tab) Adhesive Force Excellent (6,000 PSI) –
