Coltello: differenze tra le versioni

Versione delle 20:55, 10 ott 2006

Versione delle 08:57, 16 ott 2006

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===Lame===

[[Victorinox|Forschner/Victorinox]] costruisce coltelli da cucina economici; costruttori di coltelli di alta qualità sono [[Wüsthof Dreizack|Wüsthof]], [[Global (cutlery)|Global]], [[Henckels]], [[Kershaw Knives]] and Böker (Tree Brand).

====Materiali====

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L'[[acciaio inox]] solitamente contiene particelle di [[cromo]] (o di altre [[lega metallica|leghe metalliche]]) [[carburo]]. Questo spiega la sua reputazione di lunga durata (i [[carburo|carburi]] sono più duri del metallo) and for being harder to sharpen and not taking as good an edge as rustable, low alloy ("carbon") steel (the ceramic particles themselves cannot be sharpened easily.), although tests indicate that stainless steel knives hold an edge better than regular steels.<ref>by Razor Edge Systems, described in their book "The Razor Edge Book of Sharpening".</ref> The bulk hardness and toughness of stainless steel tend to be lower than those of low alloy steel. Stainless and semi-stainless steels include D2, S30V, 154CM, ATS-34, and 440C.

AUna varietybuona ofvarietà exoticdi steelsacciai esotici può essere canusata beper usedla tofabbricazione formdelle bladeslame; otheraltri materialsmateriali maypossono beessere usedutilizzati, althoughnonostante thesequesti aresiano farmolto lessmeno commoncomuni thandelle steellame bladesin acciaio. KnifeFabbricanti manufacturersdi suchcoltelli ascome [[Spyderco]] ande [[Benchmade]] typicallysolitamente useusano 154CM, VG-10, S30V, ande CPM440V (alsoconosciuto knownanche ascome S60V), as well as high-speed high-hardness tool steels like D2 and M2. OtherAltri manufacturersfabbricanti sometimesutilizzano usea titanium,volte cobalttitanio, andcobalto cobalte leghe containingdi alloyscobalto. AllTutti threee aretre moresono ductilepiù thanduttili typicaldei stainlessnormali steelsacciai inossidabili, but have quite a vocal support group despite concerns about health effects of cobalt content.
The original craft of [[Damascus steel]] may be lost, but not being a registered trademark, the name is today used to apply to the equally old but less exotic pattern welding, which creates layered and admired patterns. The cost of the process restricts it to high-end knives. There is typically more demand for exotic alloys in the utility, outdoor, and tactical or combat knife categories than there is in the kitchen knife category.

Vanadium and molybdenum are important alloy metals because they make the grain size smaller, which improves hardness and toughness. Vanadium, and perhaps molybdenum, also increase corrosion resistance, although work by CATRA ( the World's cutlery technology centre) has found no corrosion benefits from vanadium.