TICN coating reamers

redrockranger said:
Does TICN coating a chamber reamer make them cut any smoother ? Is there any draw backs to coating ? Opinions please.

Thanks
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I don't ever remember being offered TiCN on a reamer. Of all the reamer makers I've ever done business with none of them ever tried to up sell any coating service to me.
 
The reason is quite simple..
TICN coating is only used on inserts and cutting edges that don't need to be razor sharp. That's because the coating will not bond to a razor sharp honed cutting edge. The TiCN needs a very small radius on the cutting edge to form a constant coating film.
Reamers in out inductry need to be RAZOR sharp to give the best finish..

Cheers
Leeroy
 
Leroy has it right. Slick coatings on cutting tools usually either "soften" the edge in the application process or require a slightly dull edge to adhere properly. On mill cutters and single point tools, they work best at faster cutting speeds and require a consistent depth of cut. In short, the very large cutting surface area of a chamber reamer combined with the typical hand feeding we use to cut chambers with an engine lathe is just not a good application for coatings. The cutting tool world is evolving, and some tool makers are developing new coatings all the time, so there is probably something like this coming along in the near future.
 
TIN and TINC

SGS said:
Leroy has it right. Slick coatings on cutting tools usually either "soften" the edge in the application process or require a slightly dull edge to adhere properly. On mill cutters and single point tools, they work best at faster cutting speeds and require a consistent depth of cut. In short, the very large cutting surface area of a chamber reamer combined with the typical hand feeding we use to cut chambers with an engine lathe is just not a good application for coatings. The cutting tool world is evolving, and some tool makers are developing new coatings all the time, so there is probably something like this coming along in the near future.
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I'm thinking TINC is different than the Tin coating used on Redding bushings for example. Thanks SGS.
 
I have some punches that have been TICN coated. Yes, it is a little different than TIN. I believe the coating is to allow long wear time. I don't chamber enough to need it. If I did, I would buy carbide reamers.
 
I've used a couple coated reamers, they cut just fine but as they were just used once and returned I can't say if how long they last although I would think it would be better. One reamer was a 338-408 Chey Tac and it did cut incredibly smooth for the size of the body and material removed.
 
Most of out cutting tools and taps in our shop are coated. The coating helps them against the Heat, I doubt it makes them cut any better.

I have never seen a chamber reamer coated.
 
Here's what Dave Manson has to say. I get all my reamers coated. I've had PT&G reamers supplied by customers that were TiN coated.


TiCN Coating

Posted on September 13, 2015


Titanium CarboNitride (TiCN) coating is a process that infuses a very thin (.0001”-.0002”) layer of TiCN into the surface of high speed steel tools. The coating is extremely hard and “slippery”. Because of these characteristics, it offers better surface finishes and at least twice the tool life of uncoated high speed steel.

Titanium Nitride (TiN), “gold” coating, has also been used for years in this role, but isn’t as useful for cutting tools as TiCN. TiCN is a light-to-dark grey coating, sometimes with a pink tint.

We offer TiCN coating of individual reamers @ $18.00 each, with discounts available for higher volumes.

Doubling the life of a $100.00 reamer for an additional $18.00 seems a good bargain to us, but may not be appropriate if you’ll only use a reamer a few times. If, however, you cut a lot of, say, 308 Win chambers, the extra cost begins to make sense. (For more information see FAQ “High Speed Steel, Carbide and TiCN Coating”).
 
Mr Tooley

Dave Tooley said:
Here's what Dave Manson has to say. I get all my reamers coated. I've had PT&G reamers supplied by customers that were TiN coated.


TiCN Coating

Posted on September 13, 2015


Titanium CarboNitride (TiCN) coating is a process that infuses a very thin (.0001”-.0002”) layer of TiCN into the surface of high speed steel tools. The coating is extremely hard and “slippery”. Because of these characteristics, it offers better surface finishes and at least twice the tool life of uncoated high speed steel.

Titanium Nitride (TiN), “gold” coating, has also been used for years in this role, but isn’t as useful for cutting tools as TiCN. TiCN is a light-to-dark grey coating, sometimes with a pink tint.

We offer TiCN coating of individual reamers @ $18.00 each, with discounts available for higher volumes.

Doubling the life of a $100.00 reamer for an additional $18.00 seems a good bargain to us, but may not be appropriate if you’ll only use a reamer a few times. If, however, you cut a lot of, say, 308 Win chambers, the extra cost begins to make sense. (For more information see FAQ “High Speed Steel, Carbide and TiCN Coating”).
Click to expand...


Thank you Dave. I've been toying with this idea. Need to get this barrel done so i can put this project in your MBR design.
 
Goes to show what happens when you aren't paying attention. I just received a dasher reamer from Dave Manson and I overlooked the information about TiCN coating right there on his web site. I will surely ask for it on my next order. I would expect it would be even more helpful for a guy that cuts chambers with CNC and can run faster.
 
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