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大多数名表都注明是防水的，如30M、50M、100M等等。也有一部分注明是不防水的。由于结构上的需要，有的防水有的不防水，并不是说不防水的手表就不是好表，市场上很多十几元的塑料表也能防水，难道它能算是名表吗?其实手表防水主要靠很小的几个橡胶圈起作用，时间一长橡胶圈就会老化，失去弹性后就有缝隙，就可能导致进水，进气，所以要定期更换密封橡胶圈才能保证手表防水。
一、手表密封问题
另外，就是注明是防水的手表，也是指生产出来时经过检验是防水，但不能保证您不保养使用一辈子都防水。比如许多买了萧邦表的顾客戴着表沐浴，偶尔一两次感觉没有进水，但后几次就发现进水了，进了水也不及时处理，时间一长里面开始生锈，去商店告商品质量不好，要退货。另一方面，任何手表都不能戴着去洗浴和热水澡，因为垫胶冷缩后，热空气进入密封囊中，不能出来，造成雾气也不及时处理，造成腐蚀、生锈，所以手表手表只能在正常情况下佩带。
二、机械运作问题
机械手表，是机械手表就都靠齿轮运作，我们看到手表上会标明多少钻的手表，这个多少钻并不是说手表有多少钻石，而是说明手表有多少个齿轮轴是用钻眼的，一般都用人造钻石代替，由于人造钻石耐磨损，所以表的钻眼越多，手表相对走时寿命长一点。但是手表的齿轮不可能用钻石这样硬的物料来加工，它只能用钢料来作为轮轴，手表越小越簿，轮轴越细，每天几万转的转数完全靠在钻眼里面微量的油来降低磨损，一旦油干了，轮轴处于干磨损，几年下来，这个表的寿命也就到了，尽管名表的表油都是非常**的，但是由于量太小，几年下来肯定会挥发完，一根象头发一样细的轮轴能磨损多长时间?以前的表结构没有现在的复杂，且做的比较大，轮轴也比较粗，所以有的顾客说我的表十年没有保养也在走，现在的表越做越小，价格比以前贵几十倍，不能抱不如以前的感慨。
三、外观保养
名表外观一般用K金、K白金，高级动物皮料。K金尽管主要原料是黄金，但人手上的汗是酸性加上空气的腐蚀，时间一长就远没有新的时候漂亮，这就需要经常清洗抛光，使名表保持长新。如果是K白金，时间一长外面银白层磨损，里面黄金暴露，就没有以前那么白，所以也需要定期保养镀白，才能保养长新。皮表带就更不用说了，汗渍的腐蚀会使皮带过早硬化开裂，正常保养应该避免多汗多雨时期戴皮带表。如果手表是用钢做壳带，经常打磨翻新，更能体现其价值。
所以对于名表来说，保养的好坏，将会对其价值有着直接的影响。
Most watches can indicate it is waterproof, such as 30 m and 50 m, 100 m, and so on. There are also part of note is not waterproof. Due to the need of structure, some waterproof or not waterproof, is not to say that is not waterproof watch, it is not good table, on the market many ten yuan plastic table can also waterproof, can is it a watch? Actually watch waterproof mainly by several small rubber ring, a long rubber ring will be aging, there is crack after losing elasticity, can lead to water, air inlet, so be replaced periodically sealing rubber ring can ensure that watch waterproof.
A watch, sealing problem
Is indicated on the other hand, is waterproof watch, but also refers to the production come out after inspection is waterproof, but can't guarantee you don't maintain use waterproof the rest of my life. Such as many customers bought chopard watch wearing table bath, occasionally a two feel there is no water, but after a few times to find water, into the water is not handled in time, begin to rust inside a long time, go to the shop goods quality is bad, want to return. On the other hand, any watches are not wearing a sauna and a hot bath, because mat glue after cold, hot air into the sealing bag, can't come out, cause the fog is not handled in time, caused by corrosion and rust, so watch watch just under normal conditions.
Second, the mechanical operation problem
Watches are generally mechanical watches, mechanical watches is depend on the gear operation, we see the watch will indicate how many drill watch, how many drill is not to say that the watch how many diamonds, but that watch how many gear shaft is made of drilling, with artificial diamond instead of the commonly, because of artificial diamond wear resistance, so the more drilling table, walking watch relatively long life. But watch gear processed by diamond such hard material, it can only use the steel material as a shaft, watch the smaller book, shaft, the more fine, every day tens of thousands of revolutions completely rely on in drilling trace amounts of oil to reduce wear and tear, once the oil is dry, wheel and axle in dry wear and a few years down, the service life of the table is here, although watch table oil is very fancy, but the quantity is too small, a few years down will evaporate over, a thin, like a hair shaft can wear how long? Before the table structure is not complicated, now and do more big, wheel and axle is thick, so some customers say my watch is ten years without maintenance also in walk, now watch more do more small, than your several times before, can't hold the feeling as before.
Three, appearance maintenance
K gold watch general appearance, K platinum, senior animal leather. K gold, though the main raw material is gold, hand the sweat that is acid and corrosion of air, beautiful, over time, far from the new time, which requires regular cleaning and polishing, keep watch new long. If it is K platinum, a long time outside silvery white layer of wear and tear, inside gold exposure, is no longer white, so also need regular maintenance plating white, can maintain long new. Leather strap not to mention, perspiration premature corrosion will make the belt hardening cracking, normal maintenance should avoid wearing sweat rainy period belt table. If the watch is made with steel shell, often grind renovation, more can reflect its value.
So for watches, maintain good or bad, will have a direct impact on its value.
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