Parting tool material

[SteviegtrParticipant @steviegtr]

I got this, what appears to be a parting tool with my lathe. Just dug it out. Can anyone tell me the type of holder one would use for it. Also the material they are made from , as it is non magnetic.

Steve.

[SteviegtrParticipant @steviegtr]

[Tony Pratt 1Participant @tonypratt1]

Tungsten Carbide cutting strip at top brazed onto steel blade?

Tony

[David George 1Participant @davidgeorge1]

Is it stelite?

David

Edited By David George 1 on 25/04/2020 19:58:23

[SteviegtrParticipant @steviegtr]

No it is made from 1 piece. & non magnetic.

Steve.

[SteviegtrParticipant @steviegtr]

Posted by David George 1 on 25/04/2020 19:57:57:

Is it stelite?

David

Edited By David George 1 on 25/04/2020 19:58:23

What is stelite,not heard of that.

Steve.

[AdrianRParticipant @adrianr18614]

I would say it is a T shaped parting blade, the odd thing is someone has ground the top. It should be held in an angled cutter to give the top rake.

See **LINK**

Stelite is a really hard alloy, it is sometimes used instead of carbide. I know it most from welding rods that are used to build up the teeth on digger buckets.

Or in my case, It was put on the worn out chines on my canal boat to protect the corner from wearing out.

[Thor 🇳🇴Participant @thor]

Hi Steve,

I agree with Adrian, your T shaped paring blade looks very similar to these blades from Chronos. I use such a parting off blade and it works well

Thor

[not done it yetParticipant @notdoneityet]

I doubt those Chronos parting blades are stellite. They will be magnetic. They are steel, stellite is not quite a steel – unless you consider anything with a minimal ferrous content a steel!

[HopperParticipant @hopper]

They are HSS. Some have a cobalt additive according to the ads.

[David George 1Participant @davidgeorge1]

When I was an apprentice we made parts for nuclear reactors in submarines. These were made from a type of stainless and to protect from contamination which may become radioactive the tooling was all stellite and any mallet etc were lead or lead covered. These were mainly sealing rings which sealed the pipework to the chamber and shaped to fit special seals in compression. The stellite turning bits just looked like HSS tools and drills were more like a spade drill inserted into a steel shank.

David

[SteviegtrParticipant @steviegtr]

I have just had a look on the Chronos site. The blades seem to be 2mm x 8mm x 80 long. Some are 10mm wide.

The one I have is 17mm wide x 3mm thick at narrow section & 80mm long.

The Chronos site says it is a new clamp type parting tool. This looks like it's been in this old box for 20 years or more.

No matter it can go back in the box of bits. Thanks for the help. Just thought someone could identify it. I would not have asked but for the fact it was non magnetic which puzzled me.

Steve.

[HopperParticipant @hopper]

New to Chronos perhaps. Not to the rest of the world. And that blade could be held in a variety of types of holders. I don't know if HSS is magnetic having never tried it. They work very well those T section blades. Dont jam up with swarf on the sides so easily as other types. Have been used on capstan lathes etc in mass production for some years so could come from that sort of background. Often those blades can be fit straight into a holder for a conventional parting blade the same basic dimensions as the gripping is along the top and bottom edges so it does not matter if the side is angled or a T, as long as top width and bottom width are the same.

[SteviegtrParticipant @steviegtr]

Thanks Hopper will look for a holder or have a go at making one. H.S.S is magnetic , I have quite a lot of tools that are, & all are stuck on a magnetic strip on the wall. Kind thanks to Lidl. Bought a few of them & they are great, very strong.

Steve.

[Martin Hamilton 1Participant @martinhamilton1]

I have just tried a Stellite tool on a magnet & it is not magnetic at all, unlike HSS with 8% cobalt.

[mark smith 20Participant @marksmith20]

These are the type of stellite i have , several pieces, but too big for my lathe.

[KWILParticipant @kwil]

Stellite is a hard coating applied to valve stem tips and faces to provide a hard surface, to minimize wear. Stellite alloy is a non-magnetic and non-corrosive cobalt-chromium alloy that may also contain a tungsten element.

 

Was/is used for IC engines

[Michael GilliganParticipant @michaelgilligan61133]

Posted by not done it yet on 26/04/2020 07:44:41:

[…], stellite is not quite a steel – unless you consider anything with a minimal ferrous content a steel!

.

Some relevant numbers here: **LINK**

https://www.azom.com/article.aspx?ArticleID=9857

MichaelG.

[SteviegtrParticipant @steviegtr]

Looks like the nails been hit. So if I don't use it on the lathe I can sell it to someone to make a hip joint.

The dimensions are the same as an eclipse one I have made from HSS. OOps no that's wrong it is H5 Carbide.

I am going to have to make a holder for it to get it as low as it needs to be in the holder. Or would it pay to make a rear one & use it upside down. For a Myford S7.

Steve.

[not done it yetParticipant @notdoneityet]

Looks like the nails been hit. So if I don't use it on the lathe I can sell it to someone to make a hip joint.

Or perhaps thems what is making lithium ion batteries?

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