Vous connaissez ?

[doandmi]

http://cgi.ebay.fr/RICAMBI-SUZUKI-SAMUR ... dZViewItem

[taz]

non mais c'est joli ... en dural apparament

[doandmi]

Et ça vaut quoi au juste le duralluminio ?

[taz]

à vue de pif comme l'alu ... en moins solide ....


à moins que ça soit l'inverse

[ju²]

Je pense que le Duralium est un alliage d'alu et de cuivre de manganèse et de silicium utilisé, entre autre, dnas l'aéronautique mais aussi pour fabriquer des cadres de VTT à cause de son bon rapport rigidité/poids.

Cet alliage est assez cassant.

[taz]

Dural
Z Wikipedie
Dural je slitina hliníku (93,7 %), mědi (4,3 %), hořčíku (1,4 %) a manganu (0,6 %). Dural je lehký, pevný (pevnost se zvyšuje tepelným opracováním a zušlechťováním), nepružný, velmi tuhý. Spojuje se svařováním v ochranné atmosféře nebo lepením. Duralový rám lze většinou poznat podle velkého průměru trubek (oversize), kterým se dosahuje vysoké pevnosti a tuhosti. Nedostatek duralových slitin je v neschopnosti tlumit otřesy a pohlcovat rázy, mají malou anelasticitu.

Používají se následující třídy hliníkových materiálů:

2000 – nesvařitelné, vytvrditelné za tepla, dobrá pevnost; použití na komponenty; duralové slitiny (AlCuMg),
3000 – slitiny AlMn,
5000 – svařitelné, nevytvrditelné,
6000 – svařitelné (musí se ještě ale tepelně upravit), vytvrditelné za tepla. Slitiny AlMgSi,
7000 – svařitelné, vytvrditelné za tepla; slitiny AlZnMg,
7075 – nejpevnější hliníková slitina

[taz]

ou encore ....
Duralumin
From Wikipedia, the free encyclopedia.
Duralumin (also called duraluminum, duraluminium or dural) is an alloy of aluminium (about 95%), copper (about 4%), and small amounts of magnesium (0.5%–1%) and manganese (less than 1%). It is far better in tensile strength than elemental aluminium plus résistant à la traction que l'alu pur, though less resistant to corrosion mais moins à la corrosion. Its heat and electrical conductivity are less than that of pure aluminium but much more than that of steel.

Duralumin was invented in 1908 by Alfred Wilm during research for the German army. Its first use was ridged airship frames. Its composition and heat-treatment were a wartime secret. With this new rip-resistant mixture, duralumin quickly spread throughout the aircraft industry in the early 1930s, where it was well suited to the new monocoque construction techniques that were being introduced at the same time. Duralumin also is popular for use in precision tools such as levels because of its light weight and strength.

To prevent corrosion, alloy sheet can be covered with a thin layer of pure aluminium. Alclad is a common trade name for this material. Another unusually effective way of protecting the surface is Anodising. Both methods can be used at once.

Its use in ground vehicle components has been limited by cost of material and fabrication, relative to mild steel and cast iron, but it has become fairly common, especially in cases where requirements for acceleration, fuel efficiency, etc. demand light weight. là c'est pour nous ... Duralumin components include wheels , cylinder heads, blocks, crank cases, oil sumps, manifolds, bodies or body parts (Land Rover, Honda Insight, Lotus Seven, Austin-Healey), frames (M2 Bradley fighting vehicle, a very high performance Chevrolet Corvette version, Messerschmitt KR200), bumpers and fuel tank (Panhard), differential case (Peugeot), bonnet (hood) and boot cover (trunk lid) (MG A).

Today almost all material that claims to be aluminium is actually an alloy thereof. Pure aluminium is encountered only when corrosion resistance is more important than strength or hardness en fait quand l'on parle aujourd'hui d'alu, c'est presque toujours des alliages. Copper-free aluminium is specified for such uses. Conversely, the term "alloy" usually means aluminium alloy.

In modern aircraft Duralumin has evolved into the alloys known as 2017 2117 and 2024

[doandmi]

[quote="Taz"]Dural
Z Wikipedie
Dural je slitina hliníku (93,7 %), m?di (4,3 %), ho??íku (1,4 %) a manganu (0,6 %). Dural je lehký, pevný (pevnost se zvyšuje tepelným opracováním a zušlech?ováním), nepružný, velmi tuhý. Spojuje se sva?ováním v ochranné atmosfé?e nebo lepením. Duralový rám lze v?tšinou poznat podle velkého pr?m?ru trubek (oversize), kterým se dosahuje vysoké pevnosti a tuhosti. Nedostatek duralových slitin je v neschopnosti tlumit ot?esy a pohlcovat rázy, mají malou anelasticitu.

Používají se následující t?ídy hliníkových materiál?:

2000 – nesva?itelné, vytvrditelné za tepla, dobrá pevnost]

Cooooooooooool : mais tu es bien sûr de ce que tu avances ?

[doandmi]

ou encore ....
Duralumin
From Wikipedia, the free encyclopedia.
Duralumin (also called duraluminum, duraluminium or dural) is an alloy of aluminium (about 95%), copper (about 4%), and small amounts of magnesium (0.5%–1%) and manganese (less than 1%). It is far better in tensile strength than elemental aluminium plus résistant à la traction que l'alu pur, though less resistant to corrosion mais moins à la corrosion. Its heat and electrical conductivity are less than that of pure aluminium but much more than that of steel.

Duralumin was invented in 1908 by Alfred Wilm during research for the German army. Its first use was ridged airship frames. Its composition and heat-treatment were a wartime secret. With this new rip-resistant mixture, duralumin quickly spread throughout the aircraft industry in the early 1930s, where it was well suited to the new monocoque construction techniques that were being introduced at the same time. Duralumin also is popular for use in precision tools such as levels because of its light weight and strength.

To prevent corrosion, alloy sheet can be covered with a thin layer of pure aluminium. Alclad is a common trade name for this material. Another unusually effective way of protecting the surface is Anodising. Both methods can be used at once.

Its use in ground vehicle components has been limited by cost of material and fabrication, relative to mild steel and cast iron, but it has become fairly common, especially in cases where requirements for acceleration, fuel efficiency, etc. demand light weight. là c'est pour nous ... Duralumin components include wheels , cylinder heads, blocks, crank cases, oil sumps, manifolds, bodies or body parts (Land Rover, Honda Insight, Lotus Seven, Austin-Healey), frames (M2 Bradley fighting vehicle, a very high performance Chevrolet Corvette version, Messerschmitt KR200), bumpers and fuel tank (Panhard), differential case (Peugeot), bonnet (hood) and boot cover (trunk lid) (MG A).

Today almost all material that claims to be aluminium is actually an alloy thereof. Pure aluminium is encountered only when corrosion resistance is more important than strength or hardness en fait quand l'on parle aujourd'hui d'alu, c'est presque toujours des alliages. Copper-free aluminium is specified for such uses. Conversely, the term "alloy" usually means aluminium alloy.

In modern aircraft Duralumin has evolved into the alloys known as 2017 2117 and 2024

J'ai trouvé un vieil article de l'Usine Nouvelle qui parle du duralmachin pour la fabrication des bobsleighs de l'équipe de france pour les Jo de 1998 ....

[Banned]

ptain , mortel le truc

il font pas pour les jimny?