CPM 154-CM oil quench question ????

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chad2

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i am making a folding knife and have resently learned that there are some pretty good oils out there that do much better then motor oil. the steel is cpm 154cm.

my question is i went to mcmaster carr and found that they have quenching oils well they have 2 of them one is a 28 sec quench time and the other is a 11 sec quench time. my question is which one would do best for cpm 154cm ???

or any other suggestion on some really good cheap oil to use for 154cm i know about canola oil and vegetable oil but out of the four oils i have mentioned which one would give me the best results???:confused:
 
AIR....

you're also going to need some type of oven that can hold very high temps ( 1900+ )
 
Why on earth would you pay good money for an excellent steel like CPM-154, then look for a cheapest way to quench it? :confused: You don't NEED oil to quench it, anyway. In knife-type thicknesses plain air is probably fast enough.

If cost is that big a factor just send one or two blades to Texas Knifemaker Supply for heat-treating and cryo. If you have several, it will be worth it to send them in batches to Peters' HT.
 
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SShepherd said:
AIR....

you're also going to need some type of oven that can hold very high temps ( 1900+ )
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Hesparus said:
154cm is air-hardening.

- Chris
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so is it not reccomended to use oil there are a lot of people i have talked to and the crucible website also recommends using oil and freeze treatment i was just wondering what oil is best. am i and a lot of other people wrong i know that you can air quench it but i have heard that oil gives best results.
 
SShepherd said:
AIR....

you're also going to need some type of oven that can hold very high temps ( 1900+ )
Click to expand...

alright now is it best to air quench 154 or oil quench 154???

i know that 154 can be air quenched but like i said i have heard oil quench gives better results is this wrong???:confused:
 
SShepherd said:
AIR....

you're also going to need some type of oven that can hold very high temps ( 1900+ )
Click to expand...

12345678910 said:
What are you using to heat the CPM-154?
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paragone kiln! i will be bringing the steel to 1950 for 1 hour then quench in what ever now lol then dry ice over night then tempering at 600 for 2 hours twice, for a 59-61 HRC. is this wrong this is what justin gingrich told me to do and his words follow very closely to the crucible website heat treating for cpm 154cm.
 
SShepherd said:
AIR....

you're also going to need some type of oven that can hold very high temps ( 1900+ )
Click to expand...


lol i read a little further and it also says that vaccum or ATMOSPHERE quenching may result in up to 1-2 HRC points lower.

who is wrong here you guys or a well known steel manufacturer???
 
12345678910 said:
If you have your own Paragon, then I would foil wrap it and plate quench it.
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so is it wrong that the crucible website says that Salt or oil quenching will give maximum response. Vacuum or atmosphere cooling may result in up to 1-2 HRC points lower. that is copied and pasted from there page for heat treating of cpm 154cm stainless steel???? i just want to know if they are wrong.
 
SShepherd said:
This is the second time you have accused someone of being rude. Tell you what, you seem to know how do do things already. Figure it out for yourself.
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who's most people ?

I'm curious, how long have you been making knives?

i find this kind of rude when i am asking simple questions and this is what you say first i was being nice and asking if i was wrong or crucible is wrong and this is what you said. to me that is rude .

a nice and respectable answer would have been hey chad2 i get best results by air hardening my 154cm steel.
 
SShepherd said:
This is the second time you have accused someone of being rude. Tell you what, you seem to know how do do things already. Figure it out for yourself.
Click to expand...
:thumbup:


I'm sure a detailed answer will follow from somebody who knows better than me to help you understand why oil quenching is inferior to plate quenching CPM-154 and other stainless alloys.... all I wanted to say was if you took the time to look at Sean's website you'd see he uses CPM-154 and you lost out on a great opportunity for help in your learning curve by being rude to him...Don't confuse blunt with rude...Remember, there's no inflection in text. :D
 
chad2 said:
there is a thread i can not remember exactly the name of it but just about everyone who has used 154cm said the used a two bar or oil quench also i talk to justine gingrich from ranger kinves my self he also said oil is the way to go here is the crucible website that shows rockwell hardnesses after oil queches

http://www.trugrit.com/CPM154HeatTreatSpecs.pdf

chad2 said:
the funny thing about the crucible website is that in the quenching section it says nothing about air quenching!?
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how long have you been making knves? jess some of you guys can be pretty effing rude! i am asking a question and no one is giving an answer just bashing me for what i have heard i am not a lier.
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I don't understand this obsession with being right or wrong.
Instead of accusing everyone who responds of being rude, you may be better served by reading and understanding the responses.
The more info you can give in your questions, the better responses you will receive.


I perceive your responses as rude, not the ones who reply to you.

The more we know about your knowledge and experience, the better we are able and willing to help you

A 2 bar quench refers to air pressure.
From the way you quoted the crucible data sheet above, it seems that you should have understood that.

The crucible data sheets are for general industrial use.

The thin sections have good results with plate quenches.
It's not all about a point of hardness.
The plate quench, and air quench are less susceptible to warping.



Seriously send it to Texas Knifemaker for HT.
 
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