spring , Iran

A torsion spring is a helical elastic component designed to withstand torque and generate angular restoring force. Wire diameter typically ranges from 0.3 to 15 millimeters, and inner diameter varies between 3 and 150 millimeters. The shear modulus of spring steel is approximately 79 gigapascals, and allowable bending stress is defined between 600 and 1200 megapascals. The permissible working angle is commonly up to 90 or 180 degrees depending on geometric design. Torque is calculated as k multiplied by angular deflection in radians. The spring index is generally selected between 4 and 10 to reduce stress concentration.

The structure consists of a helical body and two legs with lengths from 5 to 200 millimeters for torque transmission. The number of active coils is typically designed between 2 and 12 to achieve precise angular stiffness. Stress relief heat treatment is performed within 250 to 400 degrees Celsius. Final hardness of carbon steel after treatment is adjusted between 44 and 52 HRC. Fatigue life within 10^5 to 10^7 cycles is ensured with a safety factor from 1.5 to 2. Quality control includes torque angle testing and leg angle tolerance measurement with ±1 degree accuracy.You can order and buy spring from Iran by contacting us through whatsaap and email.
WEBSITE: spring Iran