Melonite temperature and build.

A

alinwa

oft dis'd member
I've been given conflicting information/opinion regarding the operating temperature of the melonite, QPQ or "melonizing" process.

The site here lists the temp as 800F-1075F, this seems close to my median quote of operating temp. http://www.burlingtoneng.com/wear_resistance.html

I'd like to get a bunch of stuff blackened:

I've got several SS barrels to do
I've got a SS BAT thruport
I've got various small SS components like scope base and rings, trigger guard and stock weights, etc.

I've also got two more actions which I'd like to consider, one CM and one SS.


I realize that this process is fairly new. I've heard from Butch Lambert about using it on barrels. I've heard from Stiller and Curtis about using it on bolts. I can't recollect anyone who's done an action. Jim Borden has voiced his concerns to me regarding the possibility of action warpage and the probability of re-heattreat of the action. Several have mentioned buildup rates but again nothing definitive re thickness/surface. I've read a bunch about the process for use on raceguns, those hopped up demons of the IPSC circuit. These guys are all aglow about melonized actions/bbls/slides.


Has anyone here had experience with melonite coating of actions? BOLT actions specifically?


Any and all information regarding this process is appreciated.

Joel Kendrick?? Comments??

Thanxall

al
 
There is no one answer

If the material you process will be softened at 1000 deg F, then it wont work. 4140 bolts are close, 4340 is close, 416R in actions wont work, in a barrel it may. 17-4 probably is ok. I would ask the mfr of the specific part.
 
Melo'ing out..

http://coltcco.blogspot.com/2006/12/black-diamond-1911.html

Hi Al,

I just asked the Burlington guys for a quote on a bolt action rifle. If it is not too much I'll be sending a barreled action down.
It is interesting. Have you checked out the DLC(diamond like coating) type processing?

:)

From Burlington...
"The MELONITE and QPQ process increases fatigue strength about 100% on notched components made from unalloyed steel parts and about 30-80% on parts made of alloyed steels. The hardness is maintained up to about 930?F and extends the surface life of steel tools and components exposed to heat. "

So like Jerry is saying that past 930 degrees all bets are off.
 
Last edited by a moderator:
Spott3r said:
http://coltcco.blogspot.com/2006/12/black-diamond-1911.html

Hi Al,

I just asked the Burlington guys for a quote on a bolt action rifle. If it is not too much I'll be sending a barreled action down.
It is interesting. Have you checked out the DLC(diamond like coating) type processing?

:)

From Burlington...
"The MELONITE and QPQ process increases fatigue strength about 100% on notched components made from unalloyed steel parts and about 30-80% on parts made of alloyed steels. The hardness is maintained up to about 930?F and extends the surface life of steel tools and components exposed to heat. "

So like Jerry is saying that past 930 degrees all bets are off.
Click to expand...

Yo Spott3r,

No I haven't seen the DLC info. I'll Google it up.

al
 
'Morning, alinwa.

Is the main objective for you simply to have the parts blackened?

Be very cautious....... -Al
 
Diamonex..

Hardness (Vickers) 1,000-3,000 (adjust.)
Process Deposition Temperature 150°C
Friction Coefficient 0.1
Coating Thickness 0.001-10 µm
Max. Working Temp. 500°C
Chemical Resistance Chemically inert: does not react with acids or alkali
Electrical Resistivity 106-1012 ohm-cm (insulator)
Coating Finish Identical to Substrate
 
Melonite......

Hey, Al, I talked to Bodycote Int'l, They have a facility in Wisconsin that does F/A components, but I haven't called WI yet. I don't think it will come out a hi-polish, kind of a dull sheen, from what they say. They DID say the finished product was a case that had a penetration of about .030-.040. There was an article on The Gun Zone by a fellow that had it done on a Hi-Power, & it was done in Greensboro, NC, I believe, BUT, that facility is no longer in operation. As I understand it, they are a Canadian Co; but their central office is around Chicago. Good Luck, Brian
 
Alinwa

I was on a website a couple of nights ago and can't find it again.
Will come back once I find it again. It had some great options on color. Matte black was one of them.
 
My Melonite barrel was a polished dark black. I polished the barrel first. The finish will be as you give it to the Melonite people.
Butch
 
Yeahh Butch....... the problem I'm running into is getting the action done.




Butch sent me some pix before, melonite looks absolutely fabulous with a nice polish.


al
 
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