What Efforts Have Watches Made For Anti-magnetic

Among the many test items, the antimagnetic performance is one of the more critical ones, and it is also an important indicator for predicting the life of a mechanical watch.

The current diamagnetic standards for watches are: when the watch is accidentally exposed to a magnetic field with a strength of 4800A/m, the residual effect of the quartz watch does not exceed 1.5 seconds, the residual effect of the mechanical male watch does not exceed 30 seconds, and the residual effect of the mechanical female watch does not exceed 45 seconds. , such a watch is antimagnetic. (According to international standards, if the watch can continue to operate under a magnetic field of 4800A/m, and the maximum error does not exceed 30 seconds one day after the test, it meets the anti-magnetic standard.)

At the beginning of the birth of mechanical watches, the error was very large, because the materials and technology at that time were not as advanced and developed as they are now, and the governors of watches were basically made of the most basic steel and a small amount of precious metals, which were easily affected by magnetic fields. . Until 1920, the Nobel Prize winner, Charles-Edouard Guillaume from Fleurier, Switzerland, invented an iron-nickel alloy, which watchmakers applied to the watch hairspring, which greatly enhanced the watch’s performance. Antimagnetic effect.

The advantages of the hairspring made of iron-nickel alloy are very obvious: it can reduce the influence of the magnetic field on the watch governor to a negligible level, it is not easy to rust when wet, and it is not easy to be affected by temperature.

In addition to changing the material of the hairspring, watchmakers have also increased the anti-magnetic properties of the watch by adding a metal cover and a metal compartment on the bottom cover to the watch, but the problem with this design is that it makes the watch thicker and affects the beauty of the watch. When the watch becomes heavier, it increases the burden on the wrist, which is obviously not the result that consumers want, so this method is quickly eliminated, and watchmakers have to do more research on the material of the watch.

From the early steel hairspring to the nickel-chromium alloy hairspring at the back to Nivarox alloy, the material of the hairspring was upgraded step by step, but there was no qualitative change until Rolex launched the innovative Parachrom Blu blue niobium hairspring, breaking the Swatch The monopoly of Nivarox alloy hairspring is of epoch-making significance. Best cheap watches online, discover our affordable replica Rolex watches collection. Wide range of luxury watches brands.

Rolex invented the unique ratio of niobium-zirconium alloy Parachrom, which has a very low expansion coefficient, Young's modulus does not change with temperature, and has strong corrosion resistance. Of course, it is composed of paramagnetic elements and naturally has anti-magnetic properties! In addition, it has greater flexibility, making the impact resistance of the balance spring ten times higher.