Hi.
I have this compression spring:
d = 7.50 mm
Nt = 5.5 REF.
ID = 84 mm
L0 = 130.60 mm REF.
Material SAE 1070; Tensile strength Sut = 1410 MPa (reported by the wire supplier).
L1 = 94 mm; F1 = 422 N +/- 10 %; corrected stress: 260 MPa (18.4 % Sut)
L2 = 58 mm; F2 = 837 N +/- 10 %; corrected...
Hello, Engineers.
Presetting is a process by the spring manufacturer in order to increasing the ability of the wire to withstand higher stresses.
The spring will be compressed to max deflection in the final device. So, is it allowable for the manufacturer omit this process? (Will lead the set...
thread404-351326
Thank you very much to all by the help.
I just talked to my friend. The springs are working fine today.
I have gotten this information of Carlson, in Springs magazine, courtesy of Spring Manufacturers Institute, confirming your suggestions:
"When to Use:
The stress...
Hi, I'm a mechanical engineer from Venezuela. I'm helping to my friend with his seats factory. He need to improve an extension spring.
The current spring has the following characteristics:
- Material: EN 10270-1 Grade SM
- Tensile Strength, Rm: 1690 N/mm² minimum.
- Wire diameter, d: 2,50 mm...
