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Electroless Nickel Plating
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Our Company and its activities : |
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| Chetana Capacitor is a job shop where we do Electroless Nickel Plating on customer parts / equipment. We are the pioneers in this field and besides being the most experienced, have one of the largest plating facilities in India. |
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| About our facility
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We are a quality process house for Electroless Nickel Plating. |
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• With technical know how from Elnico.
• One of the largest process house in India.
• Can handle jobs up to 1500 mm in length and up to 1.5 Tons by weight.
• Thickness testing instrument.
• Can check various other qualities of the deposit such as bonding, porosity, nitric acid test etc. |
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Features at a Glance : |
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• Totally uniform plating thickness on the entire part without any limitations of complexity of the component
• Plating thickness can be controlled in micron tolerances.
• Grinding after plating is not required because of it’s uniformity in the deposit.
• Can be done on practically all metals. |
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Advantages at a Glance : |
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• Superior corrosion protection
• High Surface Hardness
• Excellent wear resistance
• Non sticking – Self polishing surface
• Consistency in deposit characteristics. |
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Electroless nickel plating is an alloy of nickel and phosphorous. |
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There are three types of Electroless Nickel Coatings available depending on the phosphorous content in the deposit namely… |
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• Low Phosphorous Electroless Nickel
• Medium Phosphorous Electroless Nickel
• High Phosphorous Electroless Nickel
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Technical Information on Electroless Nickel Plating |
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Our plating - called 'Pepcoat' and technically known as Electroless Nickel - is an unusual plating because it does no require electrical current for deposition. Hence it does not have the handicaps of conventional Electroplating, and offers the following advantages:
• Totally uniform plating thickness on the entire part
• Plating thickness that can be controlled in micron tolerances
• Grinding after plating not required because of uniform plating thickness
• Plating can be done on any metal
• HCHCr S.S. Gun metal, Copper, Brass etc. |
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PEPCOAT has a unique combination of engineering properties and is widely used for:
• Superior corrosion protection
• High surface hardness - 48 HRC to 62 HRC
• Excellent wear resistance - reduces friction
• Non - sticking, self - polishing surface
• Stability |
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Typical parts routinely plated with PEPCOAT are
• Plastic Moulds, Extruder Screw, Spider spiral, Die/Punch
• Valves - Ball, Butterfly, Gate Valve seats, Pumps - Impellers, castings, and shaft, bushes
• Hydraulic and Pneumatic cylinder, Piston rods, Pharma and Food Machinery
• Textile parts - Thread rollers, Thread guides
• Complicated parts that cannot be electroplated
• Mismachined and worm parts for all salvage |
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There are probably a number of applications where our plating can be of use to you. Write to us and we will send you our Technical Bulletin describing PEPCOAT in detail. We look forward to generating your interest in PEPCOAT. |
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PEPCOAT is a functional engineering coating with a unique and unusual combination of properties. It is commonly used for a number of different, but often complementary reasons, such as to:
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The Phosphorus - nickel deposit is resistant to attack by almost all chemicals except strong oxidizing acid and salts. |
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PEPCOAT is superior to electrolytic, especially in outdoor exposure, because of its perfect coating coverage, low porosity, uniform thickness, and amorphous deposit. |
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PEPCOAT can be heat treated to equal hard-chrome and wear resistance : in many applications. It is superior because it is highly corrosion resistant and requires no post-finishing operation such as grinding which can possibly impair the fatigue strength of the coated object. |
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PEPCOAT has natural lubricity and its smoothness minimizes wear and prevented by coating one of the two mating surface. |
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The surface properties and uniform deposition characteristic make PEPCOAT superior to any other metal finish for moulds and dies. |
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In moulding of plastics like ABS and PVC, PEPCOAT provides far better protection than hard-chrome against the generated corrosive fumes. |
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PEPCOAT is extensively used in the electronics industry-on semi-conductor and thermoelectric devices a layers of PEPCOAT provides a low-resistance solder able contact. |
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Many products, such as solvent, though not corrosive to steel, are contaminated or discolored by iron oxides. |
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PEPCOAT prevents rusting of steel and ensures products purity. Phosphorus-nickel coating, approved by foreign regulatory Agencies such as FDA and USDA for direct contact with sensitive products, is extensively used in the Dairy Food and Pharmaceutical Industry. |
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There are numerous engineering examples where expensive materials are used solely to obtain specific properties. In such applications a cheaper base metal coated with PEPCOAT offers an economical alternative. |
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PEPCOAT can be used to salvage worn and mismachined parts at substantial cost saving. |
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PEPCOAT is a very hard, highly corrosion and wear resistant deposit of phosphorus Nickel metal alloy. The hardness of coating is 45-50 Rockwell C and heat treatment compares with that of hard chorme. PEPCOAT has excellent adhesion to base metal and not flake off.
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PEPCOAT is deposited on the metal surface by an autocatalytic reduction process, which does not the process, which does not depend on the presence of galvanic action. Thus by varying the operating parameters the desired physical properties of the coating cab be obtained. This process is often referred to as ELECTROLESS NICKEL because, unlike Electroplating, no electric current is required for deposition. |
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PEPCOAT deposits uniformly on all areas of the substrate because no electric current is required in the process. Thus geometry of the part is not a limitation and intricate parts with holes and deep recesses can be uniformly coated. The electroless coating leaves no rack marks, and the deposit thickness is even on all surfaces of the part. Tolerance measurable in microns can be maintained. |
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PEPCOAT can be selectively deposited by masking off desired areas. |
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PEPCOAT reproduces the finish of the substrate, and in apperance is similar to semi-polished to polished Stainless steel. No post-finishing operation such as grinding is required and the deposit can be polished or buffed to obtain mirror finish. |
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PEPCOAT can be applied to almost any substrate including : Cast Iron, Steels, Stainless Steel, Copper, Aluminium, Nickel, Brass, Bronze, Titanium |
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Alloy of Phosphorus-Nickel |
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Density |
7.9 gm/cc |
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Melting point |
880oC |
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Hardness |
480-500 Vickers Hardness No. |
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Maximum Hardness |
Over 1000 VHN |
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Wear Resistance |
After heat treatment compares with hard-chrome |
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Corrosion Resistance |
Resistant to many organic and inorganic environment. Retards stress corrision |
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Ductility |
This foil of coating can be bent 300o around a 3 mm Mandrel without breaking |
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Tensile Strength |
Around 1000,000 psi |
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Adhesion |
30,000 to 60,000 psi to steel |
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Thermal Conductivity |
0.01 cal/cm/sec/oC |
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Electrical Resistance |
75 micro ohm-cm as deposited. Reduce able to less than 20 micro ohm-cm |
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Thermal Expulsion |
12-13 micron/m/oC |
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Magnetic Susceptibiliry |
Non-magnetic, can be made magnetic |
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Vickers Hardness
In VHN |
100oC |
200oC |
300oC |
400oC |
500oC |
With Heat Treatment |
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1100 |
1000 |
900 |
800 |
700 |
600 |
500 |
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PEPCOAT |
HARD CHROME |
ELECTRO-PLATING NICKEL |
TRUCTURE
HARDNESS AS DEPOSITED |
Amorphous 500-VHN |
Crystalline Porous deposit With micro crack network 1000-1100 VHN |
Crystalline 160-180 VHN |
HEAT TREATED |
Over 1000 VHN |
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WEAR RESISTANCE |
Excellent |
Excellent |
Poor |
CORROSION PROTECTION |
Excellent |
Poor beam of micro |
Good |
THROWING POWER |
Infinite |
Very Poor |
Fair |
UNIFORMITY OF DEPOSIT |
Excellent |
Very Poor |
Fair |
POST FINISHING |
None |
Essential |
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LIMITATION ON OBJECTS |
None |
Yes, Severe Limitation |
Yes |
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| PEPCOAT is a cost-effective answer to many engineering needs, and finds applications in Numerous industries and areas such as : |
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Chemical |
Petroleum |
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Automobile |
Marine-Sea Water |
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Food Processing |
Dairy Equipments |
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Textile |
Printing |
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Pharmaceutical |
Medical |
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Electronics |
Computer |
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Moulds & Dies |
Aerospace |
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Typical objects than can be coated are :
Needles, fastener, heat-sinks, Threaded fittings, valves, glass, pump. Impellers adn castings, blowers, shafts, glass and plastic moulds, dies, textile, rollers, piping, Screw conveyers, pneumatic cylinders, heat exchnagers and chemical vessels.
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| Regardless of the application, the primary benefit of PEPCOAT is to allow superior Perfomance at reduced costs. The incentives PEPCOAT offers are : |
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---- Lower capital investment
---- Reduced operating cost
---- Lower maintenance cost
---- Improved equipment operability
---- Increased machine reliability |
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| PEPCOAT is the trade name of our quality Phosphorus-Nickel metal alloy coating. We undertake coating of customer of customer parts ranging form small fasteners to large rollers and chemical equipment. For Further details on our product and service capabilities, please contact. |
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