What Is Pn?
Dear all,
I have come across EP and NN belts. I do not know about PN.
Will be thankful if someone could explain!
Regards, ■
Pn=Ep
Dear Sir,
PN equals din code EP
Carcass material: Polyester+Nylon
About Modulus I am not very sure of the technical data:
MODULUS OF ELASTICITY
The modulus of elasticity () is calculated by dividing the stress by the strain:
where is the modulus of elasticity (or Young's modulus), (P)
F is the force (N)
A is the cross-sectional area through which the force is applied (m)
x is the extension (m)
l is the natural length (m)
Example: A typical for rubber would be 6,9 MPa (1000 psi). For an average strength steel cord conveyor belt the modulus of elasticity would be 200 kN/mm and for an average textile conveyor belt around 7 kN/mm.
In other words: The higher the modulus the lower the elastic elongation per unit stress
Hope it is useful for your question.
Best regards,
Luke
Contact:cnplusu@gmail.com
Attachments
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Re: Pn Belt Modulus
Hello Ranga..
The modulus E for EP belting is taken as 5.5 x belt class in kN/m.
(Incidentally it is taken as 52.6 x St class in steelcord belts)
Cheers
LSL Tekpro ■
Re: Pn Belt Modulus
The elasticity characteristics of a conveyor belt are mostly expressed in permanent elongation and elastic elongation, measured during the Hysteresis test as described in EN ISO 9856.
For some purposes, like the determination of the minimum troughing distance, the Elastic Modulus M of the belt is required.
The determination of the Elastic Modulus is also described in the EN ISO 9856. It can be found by dividing the tension change (N/mm) by the relative elastic elongation.
M = dT /
dT:the tension change from 2 to 10% [N/mm]
:the relative elastic elongation [dimensionless]
= dl / l0 = ee / 100
dl:elastic strain [mm]
l0:original length of the test piece [mm]
ee:elastic elongation [%]
Example:
S 800/4 with an elastic elongation of 0.7%.
=0.7 /100 = 0.007
dT =80 – 16 = 64 N/mm
M = 64 / 0.007 = 9143 N/mm
The exact elastic elongation is typical for various fabrics designs. In general, 0.7% is common for EP and can give you quite a good estimate of M.
Good luck ■
PN Belt Modulus
Hi all,
How can I know what is the belt modulus of PN 1000/4 belt?
I am interested in knowing the amount by which a (newly bought) 1600 mm wide PN 1000/4 (with no material on it) would elongate when I give a pull of say 5 tons.
Thx
-ranga ■