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With ever increasing need for bottled LPG, the automation in
conveying and Palletizing empty and filled cylinders has become industry standard. Many of
the LPG bottling Plants across the world has put in use such systems.
The essential components that are used for the purpose, like chain, sprockets and anti
static wear resistant lining strips for movement of cylinders and Fiber reinforced Plastic
Closing Bar, Wire pallet for palletizing, for Handling and Transportation, calls for
frequent replacements.
We at Jasma Engineering , after extensively working on materials and processes, have
developed all these components to give the user, its most optimum working life and trouble
free working.
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The Spares and Components for Bottling
Plant
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Chain Link - Pin
The Chain Links are manufactured in specially
developed grades of Ductile Iron casting, appropriately alloyed, and Heat treated to
achieve good wear and abrasion resistance characteristics.
The use of Shell or Lost wax process ensures very close and consistent tolerances.
The Link Pins are machined from Drawn Alloy Carbon Steel and are duly Heat Treated.
Chains are available in Cylindrical Pin and Oval Pin Design.
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Sprockets The sprockets are also ductile iron cast to close
tolerances and heat treated to achieve most optimum wear and abrasion resistance
properties. The bore is machined to required mounting details.
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| Material properties
of chain Link |
UTS: Over
700 N / Sq. mm
Elongation: Min. 2%
Hardness: 320 – 345 BHN |
| Material properties
of Link Pin |
Hardness:
280- 320 BHN |
| Material properties
of Sprocket |
UTS: Over
700 N / Sq. mm
Elongation: Min. 2%
Hardness: 320 – 345 BHN |
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The Antistatic Wear and Abrasion
Resistance Liners
These liners are mounted on the
tracks over which the chain travels. Special Antistatic grade of Ultra High Molecular
Weight Polyethylene (UHMWPE) material is used for its manufacture. The antistatic property
ensures its suitability for LPG installations. Various profiles of the section like
“C”, rectangular, Special shapes, Curves etc. are available. The salient
features of the material are:
- Excellent wear resistance
- Excellent Abrasion resistance
- High impact strength
- Very low coefficient of friction
- Self-lubricating Property
- Variety of sizes and profiles
- Comparison of dynamic coefficient of friction on polished steel, dry:
- Mild Steel : 2.50 – 3.50
- Nylon : 0.15 – 0.40
- UHMWPE : 0.12 – 0.20
- PTFE : 0.04 – 0.25
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Major Properties of UHMWPE and Test Methods
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Test
Method |
| Density |
0.93 –
0.94 gm /cc |
DIN 53479 |
| Av.
Molecular wt |
> 4
million g/mol |
NA |
| Melt index |
Nil |
DIN 53735 |
| Yield
Stress |
> 22
N/sq. mm |
DIN 53455 |
| Tensile
modulus |
720 N/ sq.
mm |
DIN 53547 |
| Share
Hardness D |
> 65 |
DIN 53505 |
| IZODIC
notch impact |
mJ/sq. mm :
Nil |
DIN 53453 |
| Dielectric
strength |
45 kV/mm |
DIN 53481 |
| Arc
resistance |
L4 rating |
DIN 53481 |
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Spares for Palletizing
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Fiber Reinforced
Plastic, FRP Closing Bar
Special grades of FRP, having glass content over 65%
and special resins are pulltruded in form of rods. They are cut to required lengths and
fitted with carbon steel sheet metal fabricated end pieces at both ends by special
adhesive resins and SS dowel pins.
The end pieces are fabricated from Sheet metal and are welded by spatter free TIG or CO2
process. The assembly and doweling is done with use of jigs to control the center
distances of the mounting holes on end pieces to suit the Pallet size.
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FRP Properties (as per ASTM Test Procedures)
| Max.
Tensile strength (D-5083 - 94) |
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4385 kg. /
Sq. cm @ Test Speed 5 mm/min. |
| Flexural
Strength at break (D-790) |
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6900 Kg. /
sq. cm |
| Compressive
strength at break (D-695) |
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500 Kg/sq.
cm |
| Izod Impact
Strength (D-256) |
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No
breakage, up to 25 J |
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The Closing Mechanism Spares
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Holding Parts - Lower and Upper,
Cable, Spring and Spacer.
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Forged and machined Carbon Steel
Holding Parts, Upper and Lower are welded on the pallet frame. The Cable Assembly is
mounted between them with use of spring and spacer, for FRP Closing Bar to operate through
it.
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The Upper and Lower Holding
Parts: Manufactured in Carbon Steel in Closed die forging, duly heat-treated and
machined.
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The Wire Strand:
Manufactured on high-speed machines from High Carbon Zinc plated wire. Cable: Strand is
cut to size and assembled with Cold Forged pre machined and zinc plated end pieces and
crimped to make Cable Assembly. The cable is tested to withstand pull of load of 700 kg.
Spacers: Machined and zinc plated carbon steel material. Spring: Stainless steel or
Green Zinc plated spring steel material
Specifications :
| Wire |
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0.8 mm,
High Carbon, Tensile 180 kg/ sq. mm |
| Strand |
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Diameter
4.0 mm, and 1 x 6 x 12 construction. |
| Pull off
Load |
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700 kg.
between two crimped ends. |
| Springs |
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Material of
Construction En42J or SS AISI 304 |
| Spacers,
End Pieces and Holing Parts |
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Carbon
Steel |
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For
further details on Components for
LPG & Palletising Plant,contact marketing |
©
August 2000,Jasma Engineering |
