Re: Steel Cord Rating Specifications
ST1000 = 1000 kN/m (similar to 1000/4 = 1000 kN/m).
Regards,
Lyle ■
Re: Steel Cord Rating Specifications
Dear Mr.Lyle,
Please consider 1400 mm fabric belt & 1400 mm steel cord belt. Fabric belt specification is 1000/4. Steel cord belt is ST1000.
So the fabric belt total tensile load will be = (1000 KN/1 m) x 1.4 m = 1400 KN.
But in steel cord belt it directly given as 1000 KN for the above 1400 mm belt. ( It is not 1400 KN ). Why ?
Regards, ■
Re: Steel Cord Rating Specifications
Suggest the following:
XX1000/4
and
ST1000
1400 mm wide
For both:
UTS = 1000 x 1.4 = 1400 kN.
Regards,
Lyle ■
Re: Steel Cord Rating Specifications
I do not know the details for the question. Fabric belt needs a higher safety factor usually 10: while conventional steel cord is 6.7:1. Thus, a fabric belt needs to be 10/6.7 = 1.49 times stronger for the same belt tension rating.
There are many reasons for the higher safety margins on fabric. Some have to do with the splice fatigue endurance. Which is complex subject. Some have to do with the fabric construction and tensioning techniques used during manufacturing, another complex subject. Third, there are substantial differences between technologies of manufacturers, that are dumbed-down by standards to make everybody appear to be equal in the eyes of the standards. To bad for technology improvements and advancement in "fit-for-purpose". ■
Re: Steel Cord Rating Specifications
A slight correction. When I referred to belt tension rating I was referencing the apply belt tension vs. the belt rating. Sorry. ■
Re: Steel Cord Rating Specifications
Safety factor of fabric belt=10
Safety factor steelcord =6.7
Take a 3 ply fabric belt and splice it in normal way. You get only two junctions between adjacent plies. as the plies butt up to each other. So effectivelt you get two plies that are actually taking the load out of the three.. so.. 2/3 x sf of 10 = 6.7 i.e. same as steelcord.
Cheers
LSL Tekpro ■
Steel Cord Rating Specifications
Steel cord rating specifications are different from Fabric belts
Dear experts,
When the fabric belts ratings are mentioned as 1000/4 or 500/3 etc in KN/m, why steel cord belts are simply as ST1000, ST2500 etc.,?
Why KN/m is not applicable to them?
Regards, ■