Christian Bentzen Skrev:martinissing Skrev:Men spændende er det dog... jeg håber at det holder trykket og ikke bliver en bommert ligesom IWC's Aquatimer ref. 3536, der fejlede ved tryktest til 2000m, på trods af IWC ellers havde garanteret dette
Martin har du ikke et link til dette?
Hej Christian
Jeg har ikke umiddelbart et link (kan ikke finde det), men kan huske at jeg på et tidspunkt har læst i et eksemplar af Watchtime at glasset flækkede da de testede det til 2000m.
Men... har dog dette link der beskriver at IWC bund Ocean 2000 urene og IWC AT 3536 faktisk blev testet til 3200m og klarede testene fint:
"Hi,
Very good posts Subkrawler, I totally agree with you. I also have the utmost confidence in IWC’s doing exactly what they say they'll do.
When IWC introduced its titanium Ocean 2000 in 1982 with WR of 2,000m, the Ocean 2000 actually exceeded easily the pressure ratings of Rolex SD (1,200m WR), Omega Ploprof (600m WR) and Seiko PD (600m WR). While IWC was officially claiming 2000m WR, Ocean 2000 watches were actually tested to 3,200m WR. The very same thing happened with GST Aquatimers introduced in 1997; officially rated as 2,000m WR, but actually tested to 3,200m WR.
Noteworthy issue is that IWC pioneered the use of titanium in dive watches to a totally new level and standard. In the late 1990’s (1997) IWC achieved a very high level of Vickers Hardness of 2,400 HV for the bezel of titanium GST Aquatimer (3536-01) using nitriding process for hardening titanium. In addition to that IWC was able to harden the case (grade 5 titanium alloy) of the titanium GST Aquatimer up to 360 HV on a Vickers Hardness scale. However, the bracelet (grade 1 titanium alloy) of the titanium GST Aquatimer has only 180 HV on a Vickers Hardness scale (180 HV is a typical Vickers Hardness for titanium watches even currently). IWC’s titanium alloys contained vanadium and aluminium with a tensile strength of 1,000 MPa plus an extreme high temperature stability. At the same time IWC developed techniques for polishing and abrasive blasting of titanium with sapphire beads.
Anyway, IWC was truly losing money on each Ocean 2000 produced, hence plus due to the end of collaboration with Porsche, the Ocean 2000 and the IWC/Porsche Design lineup was phased out in 1996-97. Similarly, IWC was still losing money on each titanium GST Aquatimer produced and this in turn ultimately led to the discontinuing the GST Aquatimer lineup in 2002. With current lineup of titanium and stainless steel Aquatimers IWC isn’t losing money anymore, as the R&D costs have already been covered and lessons learnt, but it has been a very long road, over 30 yrs, for IWC to develop technology involved (e.g. IWC began to develop titanium technology in 1977). BTW AFAIK all current Aquatimer 2000s and 2009 Aquatimer 2000s are tested to 3,200m WR, even though the stated WR is 2,000m.Actually, 2009 Aquatimer 2000s have a family resemble with GST Aquatimers, don’t they.
Every dive watch is resistant to external overpressure (WR), but often forgotten fact is that IWC’s dive watches are also resistant to internal overpressure similar way as IWC’s Pilot watches. IWC’s with 200 bar WR can withstand internal case pressure at least 60 bar. Therefore, these IWCs don’t need helium escape valves, as they can withstand internal case pressure for maximum safe saturation diving depths. IWC also mentions that if a saturation diver worries about internal case overpressure, he or she needs to unscrew the internally threaded crown in order to release any build up of helium during the rather prolonged decompression cycle.
IWC could develop an extremely deep automatic diver that would break all existing automatic diver WR records, if IWC just wanted to. There’s no doubt about it. IWC does have the knowledge, technology and capability for that. Maybe IWC does it again…who knows, only time will tell…"
[url]"http://forums.watchuseek.com/showthread.php?p=1921953" o
nclick="window.open(this.href);return false;">http://forums.watchuseek.com/showthread.php?p=1921953[/url]