spring , Iran

A compression spring is a helical elastic element designed to withstand axial compressive loads and store mechanical energy in industrial systems. Wire diameter typically ranges from 0.3 to 25 millimeters, and outer diameter varies between 3 and 250 millimeters. The spring index, defined as mean diameter over wire diameter, is commonly selected between 4 and 12. The shear modulus of spring steel is approximately 79 gigapascals, and allowable shear stress ranges from 450 to 900 megapascals. The spring rate is calculated using k equals Gd to the fourth power divided by 8nD to the third power. Maximum allowable deflection is generally limited to 25 to 40 percent of free length.

The structure consists of concentric coils with closed or ground ends to ensure uniform load distribution. Free length may vary from 10 to 800 millimeters with 3 to 20 active coils. Stress relief heat treatment is performed between 250 and 450 degrees Celsius. Final hardness of carbon steel after treatment ranges from 42 to 52 HRC. Fatigue life within 10^5 to 10^7 cycles is achieved with a safety factor between 1.2 and 1.8. Quality control includes static load testing and dimensional inspection with 0.01 millimeter accuracy.You can order and buy spring from Iran by contacting us through whatsaap and email.
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