Max Hardness of Hydraulic Hammer Chisel I can get in the market 1

[tarekzad]

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Dear Expert in rock-breaking

What is the maximum hardness of Hydraulic Hammer Chisel I can get in the market? from where ? and how much will cost?


is there any ready-made solution for re-shaping the tip ( H or V Wedge Shape )?

What is the easiest solution for tempering, annealing, and hardening at the site?

Tarek Barham
+971563188219
tarek@zadconsult.com

 

[dik]

I'm out of my league here... but, it might not be hardness you are looking for, but toughness, and wearability. I think they use a high manganese steel for toughness, and wearability.

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-Dik

 

[tarekzad]

Dear Dik

Thanks for your elaboration, I totally agree with you.

Is there any material crossing your mind?

Tarek Barham
+971563188219
tarek@zadconsult.com

 

[dik]

I'm not into materials (other than on the periphery). Your equipment supplier should be able to provide you with the necessary information. Check with several suppliers... they will likely have similar answers. It's their job... and the construction industry will quickly 'weed out' inferior products, I suspect.

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

[IRstuff]

Hardness tends to go with brittleness, so the hardest material might not be particularly durable.

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[DAVIDSTECKER]

You might want to look at ASTM A128, Austenitic Manganese. Also known as Hadfield Manganese.
It is used in things like ball mills, AR plate, and railroad switches.
It work hardens like crazy, but still can be softened and re-worked.

 

[dik]

Thanks, David... nice to know...

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

[EdStainless]

These alloys that work harden will retain a softer core for good toughness.
Many of the Mn steel parts will be pre-hardened by working the surface.
Depending on the parts this can be anything from a cold forge to explosives.
There are some tool steels that when you use a high temperature tempering have a good balance of hardness and toughness.
The combination of abrasion and impact loading is a difficult one.

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[LittleInch]

There is a mining forum which could be good to search or ask a similar question?

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[DAVIDSTECKER]

Dik, oddly enough the reason we use it is to make non-magnetic boat anchors for the navy.

 

[EdStainless]

I visited a foundry once that cast various frogs for railroads.
After they were roughly cleaned up they were hardened by using some rough forms, a layer of ANFO, and a bunch of gravel on top as ballast.
It was fun.
They cast other items as well, wear plates, fittings, and stuff that I couldn't describe.
Lots of mining related parts.

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P.E. Metallurgy, consulting work welcomed

 

[tarekzad]

Dear EdStainless

Please share the name of the FOUNDRY

Tarek Barham
+971563188219
tarek@zadconsult.com

 

[EdStainless]

If I could recall it I would. This was 30 years ago.

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P.E. Metallurgy, consulting work welcomed

 

[tarekzad]

EdStainless

I think you have Stainless memory not a rusty one.

thanks for your support

Tarek Barham
+971563188219
tarek@zadconsult.com

 

[DAVIDSTECKER]

EdStainless' foundry was most likely casting the Hadfield Manganese.
If I recall correctly, it will reach almost Rc 80 by work hardening.

 

[DAVIDSTECKER]

The foundry I use is Monnett Steel in Southern Missouri.
I get bar and plate from Stulz-Sickles our of NJ.

 

[kingnero]

How about the "S" tool steel series? S1 => S7
That's the material you're looking for. Should be easy enough to find out the max. hardness using google or a phone call to a supplier.
As said, max. hardness might not be the best fit for your application.