Saldatura
La saldatura consiste nell’assemblare pezzi metallici mediante fusione graduale del metallo di base, garantendo la continuità delle caratteristiche del materiale delle parti unite.
Saldatura ossiacetilenica dell’acciaio dolce
L’acciaio dolce, comunemente chiamato “ferro“, è un metallo duttile, malleabile con un punto di fusione di 1.510° C.
Saldatura ossiacetilenica della ghisa
La ghisa è una lega di ferro e carbonio ed il suo punto di fusione varia da 1.050 a 1.200° C secondo la proporzione di carbonio e di altri elementi che la compongono.
Informazioni: Saldatura
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26 Ott, 2006 alle ore 11:24 pm
[…] La saldobrasatura è una tecnica di assemblaggio con un metallo di apporto, la cui temperatura di fusione è inferiore a quella dei pezzi da assemblare. La tecnica è molto simile a quella della saldatura. […]
28 Ott, 2006 alle ore 12:24 am
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Understanding COSC Certification and Its Importance in Horology
COSC Validation and its Demanding Criteria
COSC, or the Controle Officiel Suisse des Chronometres, is the authorized Switzerland testing agency that attests to the precision and precision of wristwatches. COSC accreditation is a mark of superior craftsmanship and reliability in timekeeping. Not all watch brands seek COSC accreditation, such as Hublot, which instead sticks to its proprietary demanding criteria with mechanisms like the UNICO calibre, reaching equivalent accuracy.
The Science of Precision Chronometry
The central system of a mechanical watch involves the spring, which supplies energy as it unwinds. This system, however, can be vulnerable to external elements that may impact its precision. COSC-accredited mechanisms undergo strict testing—over 15 days in various circumstances (5 positions, 3 temperatures)—to ensure their resilience and reliability. The tests assess:
Typical daily rate precision between -4 and +6 seconds.
Mean variation, peak variation levels, and effects of temperature variations.
Why COSC Certification Matters
For timepiece fans and connoisseurs, a COSC-certified watch isn’t just a piece of tech but a demonstration to enduring quality and accuracy. It represents a timepiece that:
Offers exceptional dependability and accuracy.
Ensures confidence of superiority across the entire construction of the timepiece.
Is apt to retain its worth more efficiently, making it a sound choice.
Well-known Timepiece Manufacturers
Several renowned manufacturers prioritize COSC accreditation for their timepieces, including Rolex, Omega, Breitling, and Longines, among others. Longines, for instance, presents collections like the Record and Spirit, which highlight COSC-accredited mechanisms equipped with advanced substances like silicone equilibrium springs to enhance durability and efficiency.
Historical Context and the Development of Chronometers
The notion of the timepiece originates back to the requirement for accurate timekeeping for navigational at sea, highlighted by John Harrison’s work in the 18th cent. Since the formal foundation of COSC in 1973, the certification has become a benchmark for judging the accuracy of luxury timepieces, maintaining a legacy of superiority in horology.
Conclusion
Owning a COSC-accredited watch is more than an visual selection; it’s a commitment to excellence and accuracy. For those appreciating precision above all, the COSC certification provides peacefulness of mind, ensuring that each certified timepiece will perform dependably under various circumstances. Whether for personal contentment or as an investment decision, COSC-validated timepieces stand out in the world of horology, bearing on a tradition of precise chronometry.
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Brands that manufacture chronometer watches
Understanding COSC Certification and Its Importance in Watchmaking
COSC Validation and its Stringent Criteria
Controle Officiel Suisse des Chronometres, or the Official Swiss Chronometer Testing Agency, is the official Swiss testing agency that verifies the accuracy and accuracy of wristwatches. COSC certification is a symbol of excellent craftsmanship and dependability in chronometry. Not all timepiece brands follow COSC validation, such as Hublot, which instead adheres to its proprietary strict criteria with mechanisms like the UNICO calibre, reaching similar precision.
The Art of Precision Timekeeping
The central mechanism of a mechanical watch involves the spring, which provides power as it unwinds. This mechanism, however, can be susceptible to environmental factors that may influence its precision. COSC-certified movements undergo rigorous testing—over 15 days in various circumstances (five positions, 3 temperatures)—to ensure their durability and reliability. The tests measure:
Mean daily rate precision between -4 and +6 seconds.
Mean variation, maximum variation rates, and impacts of temperature changes.
Why COSC Validation Matters
For watch fans and connoisseurs, a COSC-certified watch isn’t just a piece of technology but a demonstration to lasting excellence and accuracy. It symbolizes a timepiece that:
Presents exceptional dependability and precision.
Ensures guarantee of superiority across the whole construction of the watch.
Is likely to hold its worth better, making it a sound investment.
Popular Chronometer Manufacturers
Several well-known brands prioritize COSC validation for their watches, including Rolex, Omega, Breitling, and Longines, among others. Longines, for instance, provides collections like the Record and Spirit, which highlight COSC-certified movements equipped with innovative substances like silicone balance suspensions to enhance resilience and performance.
Historical Background and the Evolution of Chronometers
The concept of the timepiece dates back to the requirement for exact timekeeping for navigational at sea, highlighted by John Harrison’s work in the 18th cent. Since the official establishment of COSC in 1973, the certification has become a standard for assessing the accuracy of luxury timepieces, continuing a tradition of excellence in horology.
Conclusion
Owning a COSC-certified timepiece is more than an visual selection; it’s a commitment to excellence and precision. For those valuing precision above all, the COSC accreditation offers peacefulness of thoughts, guaranteeing that each validated timepiece will operate reliably under various conditions. Whether for individual contentment or as an investment decision, COSC-certified watches distinguish themselves in the world of watchmaking, bearing on a legacy of meticulous timekeeping.
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Brands that manufacture chronometer watches
Understanding COSC Accreditation and Its Importance in Horology
COSC Accreditation and its Demanding Criteria
Controle Officiel Suisse des Chronometres, or the Controle Officiel Suisse des Chronometres, is the official Switzerland testing agency that certifies the precision and precision of wristwatches. COSC validation is a mark of excellent craftsmanship and trustworthiness in timekeeping. Not all watch brands seek COSC accreditation, such as Hublot, which instead follows to its own stringent criteria with mechanisms like the UNICO calibre, attaining comparable accuracy.
The Art of Precision Timekeeping
The core mechanism of a mechanical timepiece involves the mainspring, which supplies energy as it unwinds. This mechanism, however, can be vulnerable to environmental factors that may impact its accuracy. COSC-certified movements undergo demanding testing—over 15 days in various circumstances (five positions, three temperatures)—to ensure their durability and reliability. The tests measure:
Average daily rate precision between -4 and +6 seconds.
Mean variation, peak variation levels, and effects of thermal variations.
Why COSC Accreditation Is Important
For watch enthusiasts and connoisseurs, a COSC-validated watch isn’t just a item of technology but a demonstration to enduring quality and precision. It represents a watch that:
Presents outstanding reliability and precision.
Ensures confidence of quality across the entire design of the timepiece.
Is probable to retain its worth more effectively, making it a smart choice.
Popular Timepiece Brands
Several well-known manufacturers prioritize COSC certification for their watches, including Rolex, Omega, Breitling, and Longines, among others. Longines, for instance, presents collections like the Record and Spirit, which showcase COSC-certified movements equipped with advanced materials like silicone balance springs to improve durability and efficiency.
Historic Context and the Evolution of Chronometers
The notion of the timepiece originates back to the need for precise chronometry for navigational at sea, emphasized by John Harrison’s work in the eighteenth cent. Since the official foundation of Controle Officiel Suisse des Chronometres in 1973, the validation has become a benchmark for assessing the accuracy of high-end watches, maintaining a legacy of superiority in watchmaking.
Conclusion
Owning a COSC-certified watch is more than an aesthetic selection; it’s a commitment to quality and accuracy. For those appreciating precision above all, the COSC accreditation offers peace of mind, ensuring that each accredited watch will operate dependably under various conditions. Whether for individual contentment or as an investment decision, COSC-accredited watches stand out in the world of watchmaking, bearing on a tradition of careful chronometry.
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