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Richard Mille RM 011 Flyback Chronograph Yellow Storm

  • 10 января 2020 г., 6:28:40 MSK


    audemars piguet concept price At that time, most ordinary timepieces still used traditional low-carbon steel hairsprings, and used the "dual alloy temperature difference automatic compensation balance wheel" to adjust the error caused by the effective length of the hairspring caused by the temperature difference. The copper material and the inner ring are made of steel. When the temperature changes due to thermal expansion and contraction, the error caused by the temperature is automatically adjusted by using the physical characteristics of the outer ring metal expansion coefficient greater than the inner ring.

    As the temperature of ordinary pure metals increases, the bonding force between atoms will gradually decrease, and the constant elasticity of the hairspring made from it will change. The focus of research on constant elastic metals lies in alloys, but there have been no significant results. Until the appearance of French physicist Charles Edouard Guillaume, who was born in Switzerland, he found through a large number of studies that the iron-nickel alloy containing 36% nickel is particularly sensitive to temperature and does not expand significantly with temperature. This is extremely important for isochronous balance springs based on length. He developed the Invar nickel-iron alloy in 1896, named after the abbreviation of "invariable", which means "unchangable". Later, at the request of Paul Perret, a professor of history and nature at the University of Geneva who was also a watchmaker, he began to study the constant elasticity of nickel-iron alloys. In 1904 he discovered that adding chromium to iron-nickel alloys could significantly improve the performance of finished hairsprings.

    best luxury replica watches When chromium is added to an iron-nickel alloy, when the chromium content reaches 12% and the nickel content reaches 36%, the absolute value of the thermal expansion coefficient of the alloy approaches zero and the coefficient change is particularly gentle in the room temperature range. Under the guidance of Guillaume, P. Chevenard perfected the formula, made Elinvar, and finally finalized the production. Guillaume invented the Inver Invar Invariant Alloy, because Guillaume won the Nobel Prize in Physics in 1920 for this cross-generational research, which is currently the only achievement from the field of watchmaking that won the Nobel Prize.

    Because Guillaume was supported by Imphy Alloys, a French professional alloy manufacturer, as a co-inventor of Invar. Yin Fei Company first produced the Elinvar alloy and launched it as a commodity with 1920. It took almost 10 years in the market. The Elinvar alloy replaced nearly 300 years of carbon steel.

    This is a familiar name for watch lovers. When it comes to watchmaking, it's always so easy to come to our minds. Royal Oak is the flagship collection of Audemars Piguet , which has evolved over the past 40 years: different sizes, different materials, different movements . But even if the interpretation is far from the original model, its instinct and recognizable characteristics are always the same.At Baselworld in 1972, Audemars Piguet officially launched the Royal Oak. But in fact, the overall design was completed a year ago and it was launched in Italy to test the water. At that time, Italy was the main market of Audemars Piguet.

    highluxurystore.com The designer, Gérald Genta, is said to have been inspired by the diving helmet worn by maintenance crews on the Rhone dam in Geneva. Audemars Piguet named it after the Royal Navy (HMS), referring to the octagonal portholes on the Royal Oak. For Britain, the "Royal Oak" is also a symbol of the monarchy. In the Battle of Worcester in 1651, the future King Charles II relied on an oak tree to avoid the Round Skull chase, and then he made a comeback, defeated and defeated, and the historical process changed. Therefore, the oak is a symbol of strength, longevity, and majesty ... what better name than Audemars Piguet's latest creation? Royal Oak has achieved results, but it will have to wait a few more years. The Swiss watchmaking industry was facing an uncertain future in the early 1970s, to say the least. The first oil crisis was approaching; more seriously, the quartz revolution had risen. Watchmakers are conservative and stable. Most of the finest watches are petite, with classic designs and made of gold. The introduction of the Royal Oak is a sunny thunderbolt: large size, industrial style, and made of steel, it is a luxury watch! Its fate depends on Italy, a country that is not slow, unhurried. After all, there is too much to consider carefully. The Royal Oak made of steel has earned the reputation of "the first luxury sports watch". Steel generally means robust architecture, but here suddenly it becomes refined and elegant. In addition, creating such a complex structure with high-grade steel was a huge challenge to the processing ability at that time. As for polishing and brushing, Royal Oak is no different from other top-end watches.

    There is no doubt that Royal Oak's pricing has discouraged enthusiasm: steel watches have never been more expensive than gold watches. However, Royal Oak's unexpected success was largely due to the famous collectors. Giovanni Agnelli, head of Fiat, is said to have worn the Royal Oak watch in 1974. The famous French actor Alain Delon also appeared on the screen wearing a Royal Oak watch, "self-reliance" in 1976, "the words of the police" in 1985, u-boat watches replica and "the police who do not sleep" in 1988.