What happens when you stretch a spring?

What happens when you stretch a spring?

The more you stretch a spring, the longer it gets, the more work you do, and the more energy it stores. If you pull a typical spring twice as hard (with twice the force), it stretches twice as much—but only up to a point, which is known as its elastic limit.

How do you harden spring?

Spring Hardening

1. How. When you heat up metal it softens. And when it reaches a specific temperature it’s structure changes.
2. Heating the metal to critical temperature. To do this step you must heat a part of the spring.
3. Cooling the spring. When you have heated the spring to near red hot, the rate of cooling will determine the hardness.

How do you harden and temper spring steel?

The hardening and tempering treatment consists of heating the work-piece to an appropriate hardening temperature, which is dependant upon the particular steel analysis involved, holding for sufficient time to ensure the whole work-piece is at temperature, and then rapidly quenching it in a suitable medium, cooling the …

How do you harden and temper?

Steels are heated to their appropriate hardening temperature {usually between 800-900°C), held at temperature, then “quenched” (rapidly cooled), often in oil or water. This is followed by tempering (a soak at a lower temperature) which develops the final mechanical properties and relieves stresses.

What is difference between hardening and tempering?

As the names imply, hardening makes the metal more rigid but more brittle, and tempering (from “temperate”, moderate), forgoes some hardness for increased toughness. It is done to relieve internal stresses, decrease brittleness, improve ductility and toughness.

Do you quench after tempering?

Don’t quench after tempering. If you do, you just have quenched steel. Whenever you heat steel above the critical point “around a cherry red color” you are austinizing the steel, changing its form. This “resets” any heat treating completely.