Discovering shadow-hardened mainsprings generally is a troublesome activity, however a number of strategies can be utilized.
Shadow-hardened mainsprings are product of metal that has been hardened by heating it to a excessive temperature after which quenching it in oil. This course of offers the metal a martensitic microstructure, which may be very arduous and wear-resistant. Shadow-hardened mainsprings are usually utilized in high-performance purposes, comparable to firearms and racing engines.
