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#1
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"forged" aluminum alloy?
Whenever I read about a "forged" aluminum alloy part for a
bicycle, my mind balks, my stomach clenches, and I refuse to accept it. A forge is a furnace for heating steel and iron, preperatory to working it. By working I mean hammering, bending, drawing, rolling, twisting, creasing, folding, welding, piercing, crushing, pressing, and the like. Are "forged" aluminum alloy parts actually formed in this fashion? Please humor me in my skepticism; I have heard too much hyperbole and misrepresentation in bicycle marketing to easily set aside my own apprehension of reality. Thank you. -- Michael Press |
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#2
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When the word 'forging' is used in this context, it ususally refers to
forging with a mechanical hammer or a drop forge. Forging actually makes the part stronger than it would be if it were not forged. A good example of a very strong forged aluminum part would be the aluminum frame of a Smith & Wesson AirLite .44 Magnum revolver. Which, by the way, are Scandium. Michael Press wrote: Whenever I read about a "forged" aluminum alloy part for a bicycle, my mind balks, my stomach clenches, and I refuse to accept it. A forge is a furnace for heating steel and iron, preperatory to working it. By working I mean hammering, bending, drawing, rolling, twisting, creasing, folding, welding, piercing, crushing, pressing, and the like. Are "forged" aluminum alloy parts actually formed in this fashion? Please humor me in my skepticism; I have heard too much hyperbole and misrepresentation in bicycle marketing to easily set aside my own apprehension of reality. Thank you. |
#3
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Michael Press wrote: Whenever I read about a "forged" aluminum alloy part for a bicycle, my mind balks, my stomach clenches, and I refuse to accept it. A forge is a furnace for heating steel and iron, preperatory to working it. By working I mean hammering, bending, drawing, rolling, twisting, creasing, folding, welding, piercing, crushing, pressing, and the like. Are "forged" aluminum alloy parts actually formed in this fashion? Please humor me in my skepticism; I have heard too much hyperbole and misrepresentation in bicycle marketing to easily set aside my own apprehension of reality. Thank you. Forging isn't just for steel and iron. See http://www.scotforge.com/sf_alum_forging.asp - Frank Krygowski |
#4
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Michael Press wrote:
Whenever I read about a "forged" aluminum alloy part for a bicycle, my mind balks, my stomach clenches, and I refuse to accept it. A forge is a furnace for heating steel and iron, preperatory to working it. By working I mean hammering, bending, drawing, rolling, twisting, creasing, folding, welding, piercing, crushing, pressing, and the like. Are "forged" aluminum alloy parts actually formed in this fashion? Please humor me in my skepticism; I have heard too much hyperbole and misrepresentation in bicycle marketing to easily set aside my own apprehension of reality. Thank you. you've been taking too much of the paranoia on r.b.t. literally. not every word published by the marketing department of a bike company is a lie. as to the "forge" to which you refer, the type used by a blacksmith & the like, that is lazy use of the word. it /is/ a furnace that allows the smith to forge their wares, but the actual "forging" process itself is the hammering that follows, not the heating. forging can be hot or cold or something in between & and each imparts different properties to the finished product. commonly desired properties of hot forging include densification & redistribution of inclusions. properties of cold forging include increasing yield stress by increasing the dislocation density. |
#5
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Michael, try sustituting the words, 'compacting the molecular
structure' for the word 'forge' and maybe you will be able to relax again and enjoy riding your bike. :-) Lewis. |
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#7
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Michael Press wrote:
In article .com, wrote: Michael, try sustituting the words, 'compacting the molecular structure' for the word 'forge' and maybe you will be able to relax again and enjoy riding your bike. :-) Lewis. Thanks, Lewis, and thanks to all who taught me about forged aluminum. I watch the road and the scenery while up on the bike. Where did you get the idea that I fret about that other stuff? : It is interesting how (we) bicyclists become anal-obsessive about our mounts isn't it? I wonder what brings out that characteristic? |
#8
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"forged" aluminum alloy?
On Tue, 17 May 2005 17:25:09 -0700, "Dave Thompson"
wrote: It is interesting how (we) bicyclists become anal-obsessive about our mounts isn't it? I wonder what brings out that characteristic? I could suggest something involving pipe-style seatposts and saddles falling off, but it'd be in bad taste. Jasper |
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