The heat treatment of alloy watch hairspring adopts high frequency induction heating machine

I believe everyone is familiar with watches, which have particularly high requirements for precision. In the manufacture of watches, there is an indispensable part, which is specially used to control the reciprocating movement of the balance wheel at the same time, which determines the accuracy of the watch's travel time and plays a very important role in the speed regulation structure of the watch. This part is the watch hairspring, which is a small spiral spring. When the width and thickness of the hairspring are the same as the rotational inertia of the balance wheel, the only factors that affect the vibration cycle of the watch are the length of the hairspring and the material used to make it. Therefore, when making hairsprings, you should choose a constant elastic alloy material. This alloy has high elasticity and fatigue resistance, and the temperature coefficient and expansion coefficient of elasticity are small and low, which are in line with the characteristics of watches. In addition, during the production process of the hairspring, it needs to be heat-treated by a high-frequency induction heating machine to further improve the performance of the hairspring and meet production needs.

First of all, the hairspring needs to be cold-rolled and forged, then heated and annealed, placed in an environment of 1000°C for further heating, kept for 30 minutes, and then cooled in cold water. During the heating process, it needs to go through rough drawing, middle drawing, etc., repeat the heating process twice, and finally carry out the shaping treatment, heat at the temperature of 750 ℃ in the high-frequency induction heating machine, keep warm for 15 minutes, and then slowly cool down to 100 ℃ just download it. In the heat treatment process, to avoid decarburization, the tempering temperature should be adjusted according to the hardness. The toughness of the hairspring will increase with the tempering temperature, so the tempering temperature should be appropriately increased to this increases toughness.