In recent years, smart home appliances have developed rapidly. Various smart appliances have been invented to facilitate people’s lives. From the perspective of safety protection and energy saving, attention should be paid to the research and development and manufacturing of temperature control switches in home appliances to improve The quality and stability of the temperature control switch make electrical appliances safer in daily use.
Smart home appliances use temperature control switches, and special consideration should be given to working stability, low cost, small size, easy installation and durability. Therefore, most temperature control switches use thermal bimetal as temperature sensitive components. The bimetal is the most important element of the temperature control switch, which is the lifeblood of the entire temperature control switch. It is composed of two metal sheets with different thermal expansion coefficients. Therefore, the quality, stability, and service life of the temperature control switch are directly related to the bimetal. Therefore, in order to improve the quality of temperature control switches, good raw materials must be selected. Good bimetallic elements move quickly. Generally, materials with high elastic modulus and high strength are used, which have good permanent deformation and fatigue resistance. And the thrust generated by the small displacement is large, which can drive a large work load, and promote the increase of the contact pressure of the thermostat and the high reliability. The thermal bimetal is made by cold rolling, which will affect the stability and reliability of the temperature control switch during rolling, and the influence of good materials will be reduced accordingly. After rolling, heat treatment is required for temperature stabilization.
