[TheForge] Oregon fusion blades

[James Binnion]

Particle accelerator :-) But seriously I don't know how they will get  
much tungsten carbide diffusion into the steel. There are ways to  
enhance surfaces but the penetration depth is not all that great.

James Binnion
jbin at well.com



On Aug 10, 2009, at 10:33 PM, Peter Fels & Phoebe Palmer wrote:

> Hard to imagine how that could be done, after tempering, and still get
> significant diffusion of the carbide into the steel.
>
> xlch58 at swbell.net wrote:
>> They state that they are adding Tungsten Carbide to the blade, but  
>> the
>> process results in the TC being diffused in the blade in the cutting
>> area rather than just deposited on the surface, such that  
>> sharpening the
>> blade does not abrade it away, just reveals more.   I searched the
>> patents, but can find nothing.  They (Oregon Cutting Systems) are a
>> wholly owned subsidiary of Blount that does have a lot of patents for
>> cutting (assignee Blount)  but I can find nothing that seems to match
>> this.   It may be they are a licensee of the technology, in which  
>> case
>> it will be harder to find it, since there is nothing to hang a  
>> search on.
>>
>> Charles
>>
>> James Binnion wrote:
>>> Except they say they are not adding a layer to the edge in the  
>>> blurb.
>>> The quote is
>>>
>>>
>>>
>>>> The manufacture of these blades includes an exclusive electrofusion
>>>> process that
>>>> makes the cutting edges extra hard and tough. The process does not
>>>> add a layer to the blade, it
>>>> alters the molecular structure of the steel and becomes an integral
>>>> part of the blade along its
>>>> cutting edge.
>>>>
>>> This almost sounds like some kind of ion implantation process but  
>>> that
>>> seems like a lot of money for just a lawnmower blade. Of course the
>>> information comes from a press release that is full of weasel  
>>> words so
>>> who knows for sure. They claim to have a patent pending which should
>>> be searchable on the USPTO database but you need to know something  
>>> to
>>> identify the inventor or patent owner or other info that would allow
>>> you to find it.
>>>
>>>
>>>
>>> James Binnion
>>> jbin at well.com
>>>
>>
>>
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