Molybdenum disulfide (MoS2) is included in molybdenite and has the most excellent friction and wear properties among lubricants such as Graphite and WS2.
MoS2 is hexagonal crystal structure superimposed layered with combined number of thin slices as seen in [Figure 1].
This piece is very thin, and layered with 1,600 thin pieces in 1μ thin slice.
| Chemical symbol | MoS₂ |
|---|---|
| Color | black gray |
| Specific gravity | 8.8 |
| Hardness | MOS 1 |
| Operating Temperature Range | In atmosphere - 180 ℃, in hydrogen - up to 700 ℃ In vacuum - Up to 1,100 ℃ inert gas value 1,300 ℃ |
| Pressure resistance limit | 35,000kg/cm 2s |
| Radiation resistance limit | stable up to 5 × 10 9 |
| Chemical resistance | Stable in alkaline water acid except for Strong oxidation acids(aqua regia, nitric acid, concentrated sulfuric acid), and insoluble in organic solvents |
MoS2, as showon in above [Figure 1], is superimposed with adjacent surfur ions with negative charge(Yellow in the figure), and, due to their repulsiveness, its viscosity is excellent in horizontal direction and strongly sticked to metal surface and lubrication film.
The negative surfur ion shows an excellent adhesiveness to a metal surface because it has a strong affinity to a metal. [Figure 2] shows the condition of a MoS₂ film sticked to the metal surface seen through an electron microscope.
Precision instrument gear surface, such as the clock, is found to be irregular if seen through a manifying glass with 350x strength. [Figure 3] shows an imagined lubrication condition of these surfaces.
This is why an excellent lubricant is needed.
PTFE is a registered trademark of DU PONT in the United States, and an industrial material which is an unique carbide-based fluoride material not avilable anywhere. PTFE is a very broad in application range starting from a general industry to smiconductor and aerospace industry, alsmost unlimited.
PTFE (Poly Tetra Fluoro Ethylene), FEP (Flourinated Ethylene Prophylene) and PFA (Per Fluoro Alkoxy), these three form a base, and by adding other specialized organic compounds, other products with various properties such as increased hardness and wear resistance properties, are commercialized.
PTFE (fluorine resin) is used as a paint using its unique properties of non-stick ( release properties), heat resistance, chemical resistance, abrasion resistance, electrical insulation, and applied to conventional materials such as iron, stainless steel, aluminum, copper, glass, rubber, ceramics, and plastics by spraying, powder electrostatic coating, drying, heating and sintering processes.
This PTFE coating has a release property as well as unique chemical resistance, heat resistance, insulation stability and low friction coefficient, which can be considered as ‘ killing many birds with one stone’ because it solves surface treatment problems that can not be done by any other ways.
PTFE coating product is divided into liquid and powder product by its form, and the liquid product is also categorized into an aqueous and oil based product. Depending on a coating method, conventional spary, electrostatic spray and Dip-spin spray is widely used, and special spray method such as Hot flocking, Coil coating, Roller Coating, Fluidized bed, Arc spray is also used. In addition, depending on the number of spray, Two-coat, or Three-coat is popular and Multiple-coat is used for a thick film.
Non-sadhesiveness
Low coefficient of friction
Non-oil
Heat resistance
Unique electrical properties
Low temperature safety
Chemical Resistance| Class / use | Purpose | Application examples | Material |
|---|---|---|---|
| Non-adhesive General industrial | Non-adhesive and abrasion resistance | Drum for cutter fiber, Cutter, farm equipment, toilets, packaging machinery, Bolt, Garden tools, medical tools | PTFE |
| Strong friction resistance, high-temperature non-adhesive | Heating Sealer, woodworking machinery, rubber processing roller, molds, bearings, paper fiber roller, copier and Lbprolleer, drill | Special organic compounds | |
| Strong non-adhesive | Polyurethane, epoxy resin, curing molds, tire molds, and other molds | F.E.P/ P.F.A. | |
| Ice adhesion prevention | Sticker supplies, ice machines | PTFE | |
| Parts requiring low-temperature surface treatment | Wood, rubber, cast mold | Strain T.F.E | |
| Non-adhesive Food industry | Home cooking utensils | Frying pan, keeping warm tubs, seokswae | PTFE |
| powerful non-adhesive of food Industry machinery | Bread, ice cream, sugar, confectionery, meat, flour and other containers, and plastic containers used for transport containers, Roller, packing automatic machine, rice machine | PTFE | |
| For friction reduction of lubricated surfaces | Low weight | Oilring, Shaft, Valve, Automotive Piston Ring, wet and freezing surface of packaging machine, gear, ventilating part of a glass making equipment, vending machine parts, wet and freezing surfaces of various equipment | PTFE |
| Low speed, low weight | Bearing, small Gear, ice machines, wet and freezing surface of machines | PTFE | |
| Electricity related purposes | Insulation | Insulator, terminal boards, wires | P.F.A. |
| Anti-static | Mills, pulp and paper, textile machinery Roller, Conveyor | PTFE | |
| For corrosion resistance | Corrosion protection | Food, fiber paper, chemical industry Pipe, Valve, container Lining, medical machinery, dyeing machinery parts, heat exchangers, Bolt, Nut | F.E.P P.F.A. |
| For non-oil | Water resistance oil removal | Food, textile, paper, tools, electronic component industry, working vessels | Special organic compounds |
HIGH TECH MICRO SURFACE WS2
1. Modified Tungsten Disuifide, 0.5microns(20Millonghs) thick.
2. A prodessionally applied coationg which reduces friction to 0.030 and
Extends wear life.
3. WS2 Reduces Cycle Time, Costly maintenance and Extends Mold Wear Life.
*GURANTEED TO IN CREASE PRODUCTION IMPROVE PRODUCT QUALITY SAVE MONEY
MICRO SURFACE WS2 is a HIGH TECH COATING SYSTEM, and MODIFIED TUNGSTEN DISULFIDE COATING which maximize the lubricity of a surface that is not so far done with a metal surface treatment due to a surface hardening and grinding. It significantly lowers the coefficient of friction on a metal surface and solves the problem of friction, corroision, and wear and tear. It will surely maximize the competitiveness of your company by contributing to an improvement of quality and productivity, and reduction of production cost.
This special coating is developed as a special surface lubrication coating technology for National Aeronautics and Space Administration (NASA), and used in accordance with the defense industry and by companies as GENERAL MOTORS, FORD MOTOE COM-PANY, NASA, IBM, GENERAL ELECTRIC, WHIRLPOOL CORPORATION, POLAROID, RECISION CAST PARTS INC., TRW, BOEING, MCDONNELL COUGLASM LOCKHEED AIRCRAFT, SKF BEARING, SEALMASTER VERING and other GOVERNMENT DOD-L-85685
Thanks to the introduction of new and special dry lubricant coating technology equipment using "MODIFIED TUNGSTEN DISULFIDE", precision injection and mold industry problem(headahache) is completely fully solved.
| Problems | After treatment efficacy |
|---|---|
| 1. Failure of the resin flow inside the mold 2. Reduced life of mold due to galling and friction 3. Increased deffect rate of injection molding product (Sticking phenomenon inside the mold during injection) / (bad EJECT) (Injection mold defects due to poor mold surface) / (decreased work efficiency due to use of heteromorphy) |
1. At least 10% reduction of operation temperature 2. Reduction of an operating pressure by 200 ~ 300LBS 3. Complete removal of friction loss due to a molded parts wear and tear 8. Complete removal of defect due to adhesion between mold sample and resin 5. Reduction of power consumption of injection molding machine(21AMPS→15AMPS) |
A. Cost savings achieved by a surface treatment without a thermal treatment at room temperature(existing black surface and molybdenum products replaceble)
B. Surface treatment can be processed smooth as NO.1 DIAMOND, LENSE
C. Surface treatment also available in microscopic cracks and holes with a minimum (0.060 INCH)
D. Uniform surface coating treatment with 0.5 MICRONS thickness of a metal surface lubricant
| WS2 used industry and product | Overview of WS2 use and its parts | Work environment and issues | WS2 treatment results and efficacy |
|---|---|---|---|
| Plastic casting mold, home appliance and video, advanced molds | CORE, EJECT, PIN, CAVITIES and ETC. of INJETION MOLD BLOW MOLD | Excessive cost due to bad injection, surface defects and wear and tear of mold parts | Productivity increased of more than 60% and the life of parts doubled |
| Automotive Industry | CAM SHAFTS, CRANK SHAFTS, VALVE STEMS BREAKE ASSEY, METAL ROD BEARING, WRIST PIN, PISTON, GEAR ENGIN BORTS FUEL PUMPS, SEAT SLIDE RAILS, ETC |
Overheating and wear and tear when high speeds and abrupt start and driving | Extended life of an engine and parts due to 10% reduction of temperature from partial heating of engine and gear in driving |
| Motorcycle | GEAR, CHAIN PISTONS PARRELS |
overheating and wear and tearWhen driving at a high speed and instant startup driving | POWER increases by lowering the temperature of the HEAD, and protect overheating of a chain |
| Hydraulic pump | PISTON, PISTON BLOCK SPRINGS |
Wear and tear due to high-speed and repeating operation | Smooth hydraulic tripled longer life due to excellent lubrication process |
| Cutting Tools | Super light 880 degree strong stainless drill, ndmills, jinburrs and reamer | Increased frictional heat and wear and tear rate due to high speed cutting | Precision and extended life by 5 times due to excellent lubricity and reduced friction heat |
| Paper Equipment(Paper machine) | CURING ROLLS FEED ROLLS |
High-speed operation and sticking phenomenon in working at about 180 degree temperature | The papermaking raw material of ROLL is eliminated and its life is increased by about 50% |
| Medical Devices | Dental machine DRILL GEAR |
wear and tear of Gears | Removed wear and tear, and lifetime increase by 3 times |
| Blood centrifugal separator ROLLER INDEX SHAFT |
Wear and tear due to high speed revolution operation, sudden stop and start | Removal of wear and tear, and increase of lifetime by 3 times | |
| HP MOTORS | PINS, PINONS GEARS GEARING |
Wear and tear of parts caused by high speed revolution | 2-fold increase in the life of parts without a regular injection of lubricant |
| Food Processing Machinery CANING MACHINE |
GUIDES, MOVING ROLLER SLIDE, VALL VEARING JOURNAL BEARING |
High rate of wear and tear in operation and high temperature sterilization due to a lack of lubricant | Improvement of workability and reduction of high wear and tea maintenace cost |
| Aviation industry | SPLINED SHAFT of a Hydraulic pump, 17-8 STAINLES STEEL, ROOT RIGS, BOLT AND NUTS, COUPLING’S WING FLAPS | High-speed operation under severe vibration and heavy loads | Removal of severe wear and tear, and corrosion |
| Missile system | CHROME cured adjustment valve STAINLESS 880 ℃ | HELIUM atmosphere high-speed vibration and wear and tear caused by and extreme temperature | Removal of friction, wear and tear, and maximization of a life |
| JET ENGINE NOZZLE | CABLE RULLEY CRES321 STEEL |
Extreme temperature revolution and wear and tear caused by repeated intermittent exercise | Removal of friction, wear and tear, and extreme temperatures corrosion |
| General industrial machinery | GEARS, WATERPUMP MOTOR SHAFT & BEARINGS, ETC |
reduction machine life and friction noise caused by high speed revolution, vibration, and wear and tear by abrupt stop and start | Product's life increase and reduction of friction noise and friction heat by 10% due to increased lubricity in high revolution and stopping area |
| Non-metallic products Rubber Products | OIL&WATERS SEAL O-RING |
Damage in rubber product surface and its reduction of durability in an assembly operation | Removal of rubber product surface, doubling life and functions of O-Ring and wear and tear removing SEAL by excellently increasing the surface lubricity |
| ENGINEERING PLASTIC product |
COMPUTER part PLASTIC GEAR |
Wear and tear caused by friction of metal products and plastic gears connection | Reducing maintenance costs of expensive products by maximizing a mutual lubricity without a extra injection of lubricant to a PLASTIC surface |
| ENGINEERING CERAMICS PRODUCT |
Precision instruments and heat- esistant equipment CERAMIC PRODUCT | Burdens of maintenance and replacement cost due to a ceramic wear life problem | Maximizing benefits of dry lubrication in ceramic surface and reducing the cost of maintenance and replacement due to wear and tear |
| What is WS2? | Provides the excellent lubricity as a special lubrication coating of "MODIFIED TUNGSTEN DISULFIDE" and extend the life of a treated product by significantly reducing the coefficient of friction in a metal surface to 0.003. |
|---|---|
| Surface treatment methods | WS2 is used to surfaces of metal, plastic and ceramic without adhesive and chemical catalyst, and, at room temperature, provides a complete metal surface lubrication treatment which never come off ,by alloyng through adhesion to a desired metal surface with a specal method. |
| The thickness of the lubrication coated surface | WS2 is a small partice of a metal in a shape of unique and delicate molecule and processed with an uniform thickness of 0.5MICRONS (0.0008087MM) maintaining coated surface steady. |
| Coefficient of friction | The coefficient of friction of WS2 is 0.030 for a starting coefficient(DYNAMIC COEFFICIENT) and 0.070-0.090 for a static coefficient(STATIC COEFFICIENT) and maintains an excellent lubricating property extending the service life. |
| Application temperature | WS2 is used for the surface treatment of a meatal for a work from the lowest temperature of -273℃ to the highest temperature of 650 ℃ under normal pressure, and up to the upper limit temperature of 1300 ℃ in vaccume for a surface treatment strain. |
| Chemical stability | WS2 is "MODIFIED TUNGSTEN DISULFIDE" of inert, non-toxic, corrosion resistance and capable of treating the surfaces of all stable metals, plastic, and ceramic products. |
| Interactivity | WS2 can be used with general lubricant and grease, and its efficiency is doubled when used with silicone oil and hydraulic oil. In addition it has a high aiifinity with normal lubricant and contributes to an improvement of hydraulic operation capability. |
MICRO SURFACE SPECIFIC TECHNICAL DATA WS2
| Ingredient | thin film form of MODIFIED TUNGSTEN DISULFIDE |
|---|---|
| Coefficient of friction | dynamic friction coefficient of 0.030 / static friction coefficient 0.070 |
| Coating | Molecule bonding on a treatment surface without thermal processing, binding, fusion treatment |
| Temperature range | Lubrication available from the lowest temperature of -273 ℃ to the highest temperature of 650 ℃ in atmosphere |
| Magnetic characteristics | non-magnetic |
| Treatment surface | Treats surfaces of all metal, non-metal, engineering plastic and special rubber product, and significantly improves the surface quality by special lubricating |
| Load capacity | Same as the load capacity of its unique treatment surface, and WS2 itself is 100,000 PSI |
| Thickness | 0.5MICRON(0.000020 INCH) |
| Recovery Time | Recovery time is not required and can be used immediately at ambient temperatures |
| Chemical stability | chemical reation, no toxic and corrosion protection effect |
| Vacuum environment | the lowest temperature of -188 ℃ at TORR , lubricant available at the highest temperature of 1316 ℃ |
| Applicability | Accept all paints and plating, and can be used with solvents, fuels and oils |
| Liquid oxygen compatibility | No explosive for oxygen |
| Density | 7.8GMS/CC |
| Shape | silver gray / rhodium color |
| Product name | Basic configuration | characteristic | Curing condition | Application example |
|---|---|---|---|---|
| SLC 203M | PAI,PTFE,DMAC | Lubricity, low friction, high heat resistance, corrosion resistance, 9H | 220℃ 30min | Brake pad spring, steering parts |
| SLC 203A | EPOXY,PTFE,MIBK, MEK | Lubricity, corrosion resistance, low friction | 180℃ 30min | Seat Belt Parts |
| SLC 901 | EPOXY,MOS2+Graphite,MEK | High-load lubrication, sealing | 180℃ 30min | Gasket coating etc. |
| SLC 306 | PAI,MOS2,DMAC | High-load lubrication, High heat resistance, chemical resistance, abrasion resistance | 220℃ 30min | Heavy duty compressor-High load metal coating |
| SLC 209HM | EPOXY, PTFE,MIBK, MEK | Hardness (9H), lubricity, Abrasion resistance and chemical resistance | 200℃ 30min | Brake pad liner - High hardness metal coating |
| SLC B/N | B/N,DMAC, MEK | Ultra high temperature sealing coating, Lubrication and? Releasability, prevention of sticking | 180℃ 30min | Gasket coating and sealing |
| SLC B/N S | B/N, DMAC, MEK | High temperature sealing coating, lubrication and durability, anti-squeeze | 180℃ 30min | Gasket coating and sealing |
| SLC 501B | Urethane, PTFE,IPA, WATER | Rubber (EPDM, AEM, etc.) Coating - Lubricating, releasing | 150℃ 30min | Rubber O-ring coating (Rubber) |
| SLC 501K-12 | Urethane,PTFE+Graphite, IPA, WATER | Rubber (EPDM, AEM, etc.) Coating - Lubricating, releasing | 150℃ 30min | Rubber |
| SLC 차폐도료 | Silver powder | EMI,EMC | 120℃ 30min | Electromagnetic wave shielding |
| SLC 510 | Urethane | Release | 120℃ 20min | Weather strip |
| SLC 712 | Urethane Graphite water | Lubricity | 120℃ 20min | Lubricating wiper |
| SLC 815 | graphite water,Silicone oil | Water repellency | 120℃ 20min | Water-repellent wiper |
