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| CAST NYLON RODS , SHEETS |
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CAST NYLON is generally superior to extruded Nylon-6.Since it is made by direct polymerisation of caprolactam,the polymer has never been melted and thus has been subjected to any thermal degradation.In addition,its molecular weight (up to 10,00,000) is several fold higher than molecular weight of extruded nylon-6(30,000). Since physical properties of Thermoplastics improve with increasing molecular weight ,it has Higher tensile and compressive strength, Greater hardness and modulus of elasticity, Higher wear resistance, Lower distortion at Higher temperatures,Lower moisture,Better dimensional stability, Better resistance to solvents than Extruded Nylon 6.Thus for Bearings,Gears and Structural applications.
CAST NYLON is the result of a new technology in Plastics,which makes available to you any shape or size.No longer are you restricted to the smaller size mady by extrusion or injection molding methods.Any type of heavy component is now within your reach.The casting process upgrades the Nylon 66 but with lower moisture absorption and improved strength,it enables production of stress-free stock shapes of almost unlimited size.
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AVAILABILITY
CAST NYLON
is available in stock mill shapes or custom cast finished products. Stock items are
available in popular shapes such as rods, hollow rods, sheets, blocks, gaskets etc. in
various standard sizes. Stock items can be machined quickly and conveniently into a wide
variety of finished components. Custom cast components can be produced against specific
orders with no limitation of size (geometry) within practicalities of handling and
machining.
MACHINING
CAST
profiles have excellent machinability. Various parts can thus be machined out to strict
tolerance from stocks available in the form of rods, sheets, blocks, etc. Machining of
CAST NYLON does not require expertise other than that required for machining of soft metal
and can be carried out with wood or metal working equipments, such as standard lathes,
milling machines, grinders, drill presses etc. CAST NYLON can be turned, drilled,
tapped, threaded, reamed, milled, planed, sawn and blanked.
A catalogue giving
detailed information on machining can be available on request.
ENGINEERING
CONSIDERATIONS
CAST NYLON products replace metals in various engineering applications on
account of their outstanding characteristics such as:
- Reduction in weight
- Self lubricating
- Economy
- Shock resistance
- Improved dimensional
- stability
- Vibration damping performance
- Excellent chemical resistance
- High wear and abrasion resistance
- Noise reduction
- High service temperature
- High tensile and compressive strengths
- Machining
APPLICATIONS
Some commercial applications of CAST NYLON can be given industry-wise, as under :
| Industry |
Applications |
| Engineering |
Gears, cams, sprockets, bushes,
bearings, gaskets, pulleys, liners. |
| Textile |
Loom pivot bearings, gears for loom
and knitting machines, shuttles, rollers, cams and cam followers. |
| Metal |
Bearings, bearings cages, slipper
pads, gears, bushes, wear strips, rollers, eccentric rollers, wobble box inserts. |
Material Handing
Equipment's
a) Cranes / Fork lifts / Conveyors
b) Ropeways |
Crane sheaves, bearing pads, bushes,
rollers, thrust washers, slides, guides, idle and drive sprockets, gears, wear strips and
plates.
Wheel liners (tyres), wheels, bushes. |
| Automobile |
Wear rings, pads, swivel bushes,
throttle linkages, bushes, shackle pin bushes. |
| Marine |
Bushes, gears, rings, trunnion
bearings, rollers and roller bearings, stern tubes. |
| Paper /Sugar Mill |
Gears, bushes, pulleys,
rollers, bearings. |
| Bottling and Food
Processing |
Starwheels, scrolls, guides, cams,
cam followers, rollers, timing screws. |
| Railways |
Bushes, wear plates. |
| Chemical |
Balls, gaskets, liners, nuts &
bolts. |
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| Melting Temperature |
215oc |
| Density |
1.14 - 1.16 g/cm3 |
| Tensile strength at yield |
750 - 850 kg/cm3 |
| Elongation at yield |
12 - 13% |
| E-modulus |
24,000 to 26,300 kg/cm3 |
| Hardness Rockwell 23oc |
R 107 - 112 |
| Durometre 23oc |
D 82 - 89 |
| Temperature of deflection |
80oc |
| Compression Strength at yield |
940 kg/cm3 |
| Notched impact strength |
5 - 11 kg cm/cm |
| Impact strength at +20oc |
10 kg cm/cm |
| Water absorption at 20oc |
0.3 - 3% |
| Flexural strength |
1000 - 1350 kg/cm2 |
| Resistance to heat (continuous) |
In Air 80oc
In Water 100oc
In Oil 140oc |
| Effect of weak acids |
Resistant |
| Effect of strong acids |
Attacked |
| Effect of weak alkalies |
None |
| Effect of strong alkalies |
None |
| Effect of Organic Solvents |
Resistant to common solvents |
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