Anyone send stuff to get melonited on a regular basis?

[ridgeway]

I made a PPC ring die and would like to have it melonited. If anyone sends stuff on a regular basis, drop me line.

 

[RWO]

On the benchrest board, this shop is said to be used by several people:http://www.houstonunlimitedinc.com/
I have not used it, but would not hesitate if I needed the service.

RWO

 

[hogpatrol]

Chuck, check with Rock Creek barrels. They've done well by me on small parts.

 

[Slickrick0999]

So would there be any benefit to sending a bolt from a borden Rimrock to be coated?

 

[GT Accuracy]

Don't Melonite Stainless Steel Borden Products. They used a different steel that BAT does and the Melonite process weakens their 43-44 Rc Rating. If you want protection send it to Jim for the Black Cat product

 

[Slickrick0999]

Don't Melonite Stainless Steel Borden Products. They used a different steel that BAT does and the Melonite process weakens their 43-44 Rc Rating. If you want protection send it to Jim for the Black Cat product

What is the black cat product?
There is nothing wrong with my Borden just wondering if it could improve anything?

 

[butchlambert]

What is the black cat product?
There is nothing wrong with my Borden just wondering if it could improve anything?

slickerick,
Melonite is not a coating.

 

[Slickrick0999]

slickerick,
Melonite is not a coating.

Yeah, I remember that now. Guess I was just using that term wrong

slickerick,
Melonite is not a coating.

Yeah, I remember that now. Guess I was just using that term wrong.

What is the treatment that comes out grey and is supposed to have somewhat of a self lubricating characteristic?

 

[GT Accuracy]

What is the black cat product?
There is nothing wrong with my Borden just wondering if it could improve anything?

Black cat is a PVD coating - 3,500 on the Vickers Hardness Scale

 

[JRS]

Yeah, I remember that now. Guess I was just using that term wrong


Yeah, I remember that now. Guess I was just using that term wrong.

What is the treatment that comes out grey and is supposed to have somewhat of a self lubricating characteristic?

ROBAR's NP3 finish. Unrivaled smoothness, corrosion protection, and guaranteed for life

Edit: Rockwell hardness is 48-51

 

[TAJ45]

And that would be the "C" scale

 

[TAJ45]

Black cat is a PVD coating - 3,500 on the Vickers Hardness Scale

I think you mean 350 Vickers / 36.8 R(C)

 

[LRPV]

I would like to get a Defiance bolt melonited.

 

[GT Accuracy]

I think you mean 350 Vickers / 36.8 R(C)

Nope 3,500.... well over 80 Rockwell. From a PVD providers website:

"The average relative micro-hardness of our PVD coatings go well off the Rc Scale, but can be extrapolated to be well over 80 Rc. When this hardness is compared to 58-62 Rc of tool steel, 62-65 Rc of HSS, or 70-76 Rc of cemented carbide, one gets a clearer picture of the comparative hardness of our coatings. This higher hardness gives cutting tools, forming tools, and wear components much greater protection against abrasive wear."

 

[TAJ45]

Nope 3,500.... well over 80 Rockwell. From a PVD providers website:

"The average relative micro-hardness of our PVD coatings go well off the Rc Scale, but can be extrapolated to be well over 80 Rc. When this hardness is compared to 58-62 Rc of tool steel, 62-65 Rc of HSS, or 70-76 Rc of cemented carbide, one gets a clearer picture of the comparative hardness of our coatings. This higher hardness gives cutting tools, forming tools, and wear components much greater protection against abrasive wear."

Nope 3,500.... well over 80 Rockwell. From a PVD providers website

OK, I did some research and saw where Jim Borden stated 3500 also.
I also saw where Vickers was not linear and topped at 900 = 66.5 R(C). Had more to say but it disappeared somehow.
Now I read "extrapolated". OK, can buy that. But also keyed on the "micro surface" term. Need a tech definition please.

 

[GT Accuracy]

OK, I did some research and saw where Jim Borden stated 3500 also.
I also saw where Vickers was not linear and topped at 900 = 66.5 R(C). Had more to say but it disappeared somehow.
Now I read "extrapolated". OK, can buy that. But also keyed on the "micro surface" term. Need a tech definition please.

Ok so the micro surface term means that unlike melonite product the PVD is actually a coating... microns thick.

Background:

You can protect an action, or any metal by either of 2 ways.

1) you can harden it. Hardening makes it HARDER . However it will still rust or break down and deteriorate. It might take years or decades to do but it will still rust. Yes, melonite will rust. Takes a long time unless salt is present but it can happen. Hardening does not effect tolerances

2) you can coat it. Coatings prevent rust, assuming the coating is intact and applied correctly. However it closes clearances and can cause issues. This is present on Borden's LSR / SSR and Cerakote. Thus the PVD is used Bc it's so thin. It doesn't effect the clearance of a Borden.


Note. PVD will feel rough until it has had oil applied and all the micro surfaces are filled. Then it's like a greased pig ! Slick as hell

 

[GT Accuracy]

One more benefit of PVD is that it is so hard it is preferred when using titanium. The hardness prevents stretching

 

[TAJ45]

One more benefit of PVD is that it is so hard it is preferred when using titanium. The hardness prevents stretching

Greg, please make your last sentence chalk simple for me. Stretching?

 

[GT Accuracy]

Titanium has a tendency to stretch or grow under heat and pressures. This can be seen in not only the gun industry but also golf.

Adding PVD eliminates that growth / stretch of titanium. That is why when Jim first released his titanium actions PVD was required. After lots of calls he softened that stance but now clients who choose to forgo the PVD have to agree that they understand the issues with titanium we have discussed here, stretch, sticky feeling, binding etc. All are tangents of titanium moving / growing / stretching

 

[TAJ45]

Titanium has a tendency to stretch or grow under heat and pressures. This can be seen in not only the gun industry but also golf.

Adding PVD eliminates that growth / stretch of titanium. That is why when Jim first released his titanium actions PVD was required. After lots of calls he softened that stance but now clients who choose to forgo the PVD have to agree that they understand the issues with titanium we have discussed here, stretch, sticky feeling, binding etc. All are tangents of titanium moving / growing / stretching

The things I learn on this board. Thank you Greg for the explanation.