Plastic Shilp Udyog

Polyacetal (delrin) polymers, properly called polyoxmethylene (pom), are highly crystalline linear thermoplastic, provides predictable mechanical, chemical and electrical properties, over a broad temperature range for long time periods. Polyacetal are hard, strong and stiff, have good toughness, low co-efficient of friction against self and other materials. Polyacetal are non-hygroscopic, maintain good dimensional stability and have excellent machinability, which enhance its application in industrial fields. Some of the wide used components made in polyacetal for industrial applications are valves, impellers, gears, cams, chain links, spray nozzles, seatings, guides etc.      

Availability:

polyacetal materials are available in the forms of stock-shapes like round, rectangular, square bars, tubes, blocks, sheets, chains and in finished molded & machined components as per cliental specifications.

Applications:

• Bushing
• Bearings
• Camshaft
• Chains
• Fasteners
• Wheels
• Spiders
• Guides

Salient Features :

• Excellent dimensional stability
• Crystalline linear molecular structure
• Very tough & strong
• Good dielectric strength
• Excellent machinability
• Hard & smooth surface
• Exceptional dynamic fatigue strength

Physical Properties :

properties	method	unit	value
tensile strength	din 53455	n/mm2	68
elongation at break	din 53455	%	20-30
co-efficient of linear expansion	teitz dilatometer	oc	1. 3 x 10-4
compressive strength	astm d 695	kgf/cm2	320
impact strength (notch)	din 53453	kg/cm2	9
specific gravity	din 53479	gm/cc	1. 41
hardness	astm d 2240	shore d	80-85
service temperature (max)		oc	90 - 130
co-efficient of friction			0. 15 - 0. 50