"Cryogenics we utilize a proprietary 60 hour freezing process"
"although we try to ship on the same day."
I think this is bullsh*t, any molecular changes would be set at
molten heat while being cast or forged.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Dave Milne wrote:
>
> wow, you even get cryogenically frozen ones now.
> (http://www.frozenrotors.com/brakefaq.shtml)
> I guess the science is good ( it gets done on high end knives ), but whether
> it makes a practical difference I know not.
>
> Dave Milne, Scotland
> '91 Grand Wagoneer, '99 TJ

 

"Cryogenics we utilize a proprietary 60 hour freezing process"
"although we try to ship on the same day."
I think this is bullsh*t, any molecular changes would be set at
molten heat while being cast or forged.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Dave Milne wrote:
>
> wow, you even get cryogenically frozen ones now.
> (http://www.frozenrotors.com/brakefaq.shtml)
> I guess the science is good ( it gets done on high end knives ), but whether
> it makes a practical difference I know not.
>
> Dave Milne, Scotland
> '91 Grand Wagoneer, '99 TJ

 

"Cryogenics we utilize a proprietary 60 hour freezing process"
"although we try to ship on the same day."
I think this is bullsh*t, any molecular changes would be set at
molten heat while being cast or forged.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Dave Milne wrote:
>
> wow, you even get cryogenically frozen ones now.
> (http://www.frozenrotors.com/brakefaq.shtml)
> I guess the science is good ( it gets done on high end knives ), but whether
> it makes a practical difference I know not.
>
> Dave Milne, Scotland
> '91 Grand Wagoneer, '99 TJ

 

Here's a rational quote from one of the sword sites:

"I really wish this would just go away, but obviously it is not going to
anytime soon. The cryogenic (subjecting it to severe cold, as in LN2
or -290F) treatment of blades is not a new thing, and it is also not a magic
thing.

"There are two potential changes that can occur. The first is dimensional
stability can be improved. This is what happens to the rifle barrel. By
being subjected to severe cold, the barrel now no longer changes dimension
as much as it used to when it heats up from repeated firing. Gauge block
standards have been cryogenically treated for years for this reason, it
reduces the margin of error induced by changes in temperature.

"The second possible thing that can happen is the change to martensite if
there was retained austenite in the microstructure of the material. This is
applicable to blades, but only if retained austenite is present. If the heat
treating is done well, then there is no retained austenite present, i.e. no
benefit to the cryogenic treatment. Retained austenite can be a problem with
high alloy steels (stainless steels with high carbon are particularly
susceptible, but still only if the heat treatment was not optimal in the
first place). Low alloy and simple steels (likely what your kukri is made
from a 10xx steel) are extremely unlikely to benefit from a cryogenic
treatment, as they are unlikely to have any retained austenite to convert to
martensite in the first place."


Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ

"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:41508499.994C741E@***.net...
> "Cryogenics we utilize a proprietary 60 hour freezing process"
> "although we try to ship on the same day."
> I think this is bullsh*t, any molecular changes would be set at
> molten heat while being cast or forged.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Dave Milne wrote:
> >
> > wow, you even get cryogenically frozen ones now.
> > (http://www.frozenrotors.com/brakefaq.shtml)
> > I guess the science is good ( it gets done on high end knives ), but
whether
> > it makes a practical difference I know not.
> >
> > Dave Milne, Scotland
> > '91 Grand Wagoneer, '99 TJ

 

Here's a rational quote from one of the sword sites:

"I really wish this would just go away, but obviously it is not going to
anytime soon. The cryogenic (subjecting it to severe cold, as in LN2
or -290F) treatment of blades is not a new thing, and it is also not a magic
thing.

"There are two potential changes that can occur. The first is dimensional
stability can be improved. This is what happens to the rifle barrel. By
being subjected to severe cold, the barrel now no longer changes dimension
as much as it used to when it heats up from repeated firing. Gauge block
standards have been cryogenically treated for years for this reason, it
reduces the margin of error induced by changes in temperature.

"The second possible thing that can happen is the change to martensite if
there was retained austenite in the microstructure of the material. This is
applicable to blades, but only if retained austenite is present. If the heat
treating is done well, then there is no retained austenite present, i.e. no
benefit to the cryogenic treatment. Retained austenite can be a problem with
high alloy steels (stainless steels with high carbon are particularly
susceptible, but still only if the heat treatment was not optimal in the
first place). Low alloy and simple steels (likely what your kukri is made
from a 10xx steel) are extremely unlikely to benefit from a cryogenic
treatment, as they are unlikely to have any retained austenite to convert to
martensite in the first place."


Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ

"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:41508499.994C741E@***.net...
> "Cryogenics we utilize a proprietary 60 hour freezing process"
> "although we try to ship on the same day."
> I think this is bullsh*t, any molecular changes would be set at
> molten heat while being cast or forged.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Dave Milne wrote:
> >
> > wow, you even get cryogenically frozen ones now.
> > (http://www.frozenrotors.com/brakefaq.shtml)
> > I guess the science is good ( it gets done on high end knives ), but
whether
> > it makes a practical difference I know not.
> >
> > Dave Milne, Scotland
> > '91 Grand Wagoneer, '99 TJ

 

Here's a rational quote from one of the sword sites:

"I really wish this would just go away, but obviously it is not going to
anytime soon. The cryogenic (subjecting it to severe cold, as in LN2
or -290F) treatment of blades is not a new thing, and it is also not a magic
thing.

"There are two potential changes that can occur. The first is dimensional
stability can be improved. This is what happens to the rifle barrel. By
being subjected to severe cold, the barrel now no longer changes dimension
as much as it used to when it heats up from repeated firing. Gauge block
standards have been cryogenically treated for years for this reason, it
reduces the margin of error induced by changes in temperature.

"The second possible thing that can happen is the change to martensite if
there was retained austenite in the microstructure of the material. This is
applicable to blades, but only if retained austenite is present. If the heat
treating is done well, then there is no retained austenite present, i.e. no
benefit to the cryogenic treatment. Retained austenite can be a problem with
high alloy steels (stainless steels with high carbon are particularly
susceptible, but still only if the heat treatment was not optimal in the
first place). Low alloy and simple steels (likely what your kukri is made
from a 10xx steel) are extremely unlikely to benefit from a cryogenic
treatment, as they are unlikely to have any retained austenite to convert to
martensite in the first place."


Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ

"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:41508499.994C741E@***.net...
> "Cryogenics we utilize a proprietary 60 hour freezing process"
> "although we try to ship on the same day."
> I think this is bullsh*t, any molecular changes would be set at
> molten heat while being cast or forged.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Dave Milne wrote:
> >
> > wow, you even get cryogenically frozen ones now.
> > (http://www.frozenrotors.com/brakefaq.shtml)
> > I guess the science is good ( it gets done on high end knives ), but
whether
> > it makes a practical difference I know not.
> >
> > Dave Milne, Scotland
> > '91 Grand Wagoneer, '99 TJ

 

Whether or not you think anything is BS is unimportant Bill since you think
most things you don't understand are BS. Cyrogenically treated parts do
indeed change their metalurgy and do pick up tensile strength and hardness
in the process.

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:41508499.994C741E@***.net...
> "Cryogenics we utilize a proprietary 60 hour freezing process"
> "although we try to ship on the same day."
> I think this is bullsh*t, any molecular changes would be set at
> molten heat while being cast or forged.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Dave Milne wrote:
>>
>> wow, you even get cryogenically frozen ones now.
>> (http://www.frozenrotors.com/brakefaq.shtml)
>> I guess the science is good ( it gets done on high end knives ), but
>> whether
>> it makes a practical difference I know not.
>>
>> Dave Milne, Scotland
>> '91 Grand Wagoneer, '99 TJ

 

Whether or not you think anything is BS is unimportant Bill since you think
most things you don't understand are BS. Cyrogenically treated parts do
indeed change their metalurgy and do pick up tensile strength and hardness
in the process.

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:41508499.994C741E@***.net...
> "Cryogenics we utilize a proprietary 60 hour freezing process"
> "although we try to ship on the same day."
> I think this is bullsh*t, any molecular changes would be set at
> molten heat while being cast or forged.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Dave Milne wrote:
>>
>> wow, you even get cryogenically frozen ones now.
>> (http://www.frozenrotors.com/brakefaq.shtml)
>> I guess the science is good ( it gets done on high end knives ), but
>> whether
>> it makes a practical difference I know not.
>>
>> Dave Milne, Scotland
>> '91 Grand Wagoneer, '99 TJ

 

Whether or not you think anything is BS is unimportant Bill since you think
most things you don't understand are BS. Cyrogenically treated parts do
indeed change their metalurgy and do pick up tensile strength and hardness
in the process.

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"L.W. ("ßill") ------ III" <----------@***.net> wrote in message
news:41508499.994C741E@***.net...
> "Cryogenics we utilize a proprietary 60 hour freezing process"
> "although we try to ship on the same day."
> I think this is bullsh*t, any molecular changes would be set at
> molten heat while being cast or forged.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Dave Milne wrote:
>>
>> wow, you even get cryogenically frozen ones now.
>> (http://www.frozenrotors.com/brakefaq.shtml)
>> I guess the science is good ( it gets done on high end knives ), but
>> whether
>> it makes a practical difference I know not.
>>
>> Dave Milne, Scotland
>> '91 Grand Wagoneer, '99 TJ

 

Jerry Bransford did pass the time by typing:
> Whether or not you think anything is BS is unimportant Bill since you think
> most things you don't understand are BS. Cyrogenically treated parts do
> indeed change their metalurgy and do pick up tensile strength and hardness
> in the process.
>L.W. ("ßill") ------ III wrote:
>> "Cryogenics we utilize a proprietary 60 hour freezing process"
>> "although we try to ship on the same day."
>> I think this is bullsh*t, any molecular changes would be set at
>> molten heat while being cast or forged.

I dunno. Tend to agree with Bill on this. From my classes in material
science a metal (liquid) only changes its properties based on how long
it's kept at how high (not low) a temperature and how quickly you quench it.

When I first saw that site it rang my -------- detector loud enough to wake
the dead in five states.

Somewhere out there there is a study on cryogenics vs non and they show
no difference in wear at all. If I find that link I'll post it.

--
DougW