frozen forging?

Phil,
If the phrase was "Forged and Frozen', you would be correct, but Frozen Forged" cannot be read that way. The word frozen modifies forged.
In "Heat Treat(ment)", the word HEAT correctly modifies TREATMENT, as the process uses heat to create the changes. Cryo is part of heat treatment for the same reason, as it is part of the cooling process.

Daniel,
1095 gains nothing from cryo, so I would not suspect that it is done to these blades. Maybe the catch phrase came up because the shop is below freezing all winter ( as mete suggested).

The only similar phrase I can think of is COLD FORGED, which normally refers to drop forging low carbon steel at room temperature. While this works fine for nuts and bolts, it isn't good for shaping high carbon blades.

A few smiths have tauted this as a superior method. Here is a read on one;
http://www.navaching.com/forge/coldforge.html
 
Rick Marchand said:
My guess is that some new hotshot in publications/promotions sat down with the manufacturing crew (5mins, tops) and asked what it is they do... then flew with it. I'm also fairly certain that the guys on the shop floor are probably roll their eyes at the catch phrases, too.
Click to expand...

That's a very reasonable guess. :thumbup:
 
bladsmth said:
A few smiths have tauted this as a superior method. Here is a read on one;
http://www.navaching.com/forge/coldforge.html
Click to expand...

I don't know whether to laugh or cry.... I should have never clicked on that link.... thanks, Stacy.:confused:

There's no grain growth as there's no opportunity for grain growth. Just the opposite occurs--grain reduction. An 80% cold work reduction make the grains five times smaller. And even after a sub-critical anneal the grains remain more than twice as small.

If a fine-grained edge is important to you, cold forging is the way to go.
Click to expand...


For Stacy's next prank, he will link us to the Flat Earth Society site.:p



Rick
 
it sounds like controlled forge progress. tough i am not sure if they are the same.

using the REMAINING HEAT of the forging process to get a quench immeditly after forging into the shape. then tempering at certain temperature to refine carbide. when its done, quench, cryro, tempering and such. some factory are using this progress to replace the forge->anneal->quench->cyro->temper progress.

carefully controll the deformation rate of the forging progress, finish forging just above a3, oil quench or salt bath before recrystalization. then tempering at certain temperature, usually above 700 to get supper refined VC NbC such MC type carbide. thus double refine the carbide and grain.

also it does not need hours of anneal and slow cool, so i think saving money and improve the producting rate is the biggest benifition.

some important truck spring made of 60Si2Mn(similar to aisi s5) over here are product in this way. tough i am not sure if this progress has singnifcant improvement on knife making.
 
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