As I understand it, cold formed steels (cold-rolled) have inherent stresses, as do extruded aluminum/brass/etc... and as such, they will warp due to material removal alone.
Hot rolled do not, or at least to much, much smaller degree.
I would expect that your annealed holders will not warp a measurable amount due to machining (so you can likely take all the material off of one side without worrying about it).
I have not gotten around to machining them yet, but I would expect
some warping after hardening. Being that it is an insert holder, any
warping should not matter as the QCTP holder can be adjusted
accordingly. It is hard to imagine that warping could cause the
insert to not fit, which is the only thing that I see as a problem.
I will chase the retaining screw threads to clear out the scale.
One point regarding warping: Machining can cause warping too. I do
not know if hardened steel is more or less likely to warp when
machined compared to low carbon (I would guess less likely), but I
have seen low carbon bow or twist while machining it. I think there
is some sort of stress relief process to prevent it that I have
never investigated.
On 4/28/2024 11:20 AM, Andrei via
wrote:
Mike, did they warp at all during annealing or subsequent
machining?
I am also curious whether they will warp when you harden them
back.?
If they do, you will have to grind them back to straight.?
They stayed in the oven at 1550 about an hour. I shut the
oven off and left them in overnight to cool slowly. I did clean
the scale off before testing hardness, but I am still skeptical
of it being softer than 1018. An online source claims 4140
annealed is 12 HRC, so maybe it is plausible.
I have used carbide to cut hardened steel, but it is not very
enjoyable to do on a Clausing 8520 without coolant. The mill
does not have the girth to support the necessary tool pressure.
The risk of breaking endmills is high. I would rather save my
carbide for when I have no other options.
On 4/28/2024 12:16 AM, mike allen
via wrote:
Good deal . How long did ya cook them ?
thanks
animal
On 4/27/24 8:45 PM, Mike Poore
wrote:
Just an update in case anyone is
interested. I annealed the tool holders at 1550 F. Before
annealing, they tested at 45 HRC. After annealing, they
tested at 8 HRC. I have read I should use a B scale tester,
but I do not have one. A scrap piece of 1018 tested at 15
HRC, so these holders should be easy milling.
On 4/25/2024 11:37 AM, Mike
Poore via wrote:
I did a search for that number. The
indicates that is the Swedish equivalent to
4340.
Sorry for wasting everyone's time. I hate when people ask
easily answered questions and I am guilty. I found this
that lists the HT specs for most alloys.
1550F is within the annealing range of almost every alloy
on the list. 1500F is within the hardening range for
almost all alloys. I will have to do more research on
tempering, but for an insert holder there should be a wide
tolerance.
On 4/25/2024 1:17 AM,
Andrei via wrote:
Found a reference online to SS2541 being
used for tool bit holders. Maybe check that.?
The problem is I do not know the alloy. I guess I
will use the 4140 specs.
On 4/25/2024 12:59
AM, Andrei via wrote:
That is definitely a great option. I
don't have one so my go-to was carbide and
coolant.youbare in great shape with the oven
I have a heat treating oven right next to my
mill, so I would rather use the oven.
On 4/24/2024
11:02 PM, Andrei via wrote:
Are short of squirter bottles or
endmills?
Not an option for me.
On
4/24/2024 9:43 PM, Andrei via
wrote:
Use a carbide endmill and
coolant. No need to anneal
Anyone happen to know the alloy most
likely to be used for carbide insert tool
holders? My guess is 4140. I have four
that I need to mill down to work in an AXA
holder. They test at 45 HRC. Thinking
about annealing them before milling and
then heat treating again, so I would like
specs to use.
|
I have not gotten around to machining them yet, but I would expect
some warping after hardening. Being that it is an insert holder, any
warping should not matter as the QCTP holder can be adjusted
accordingly. It is hard to imagine that warping could cause the
insert to not fit, which is the only thing that I see as a problem.
I will chase the retaining screw threads to clear out the scale.
One point regarding warping: Machining can cause warping too. I do
not know if hardened steel is more or less likely to warp when
machined compared to low carbon (I would guess less likely), but I
have seen low carbon bow or twist while machining it. I think there
is some sort of stress relief process to prevent it that I have
never investigated.
On 4/28/2024 11:20 AM, Andrei via
groups.io wrote:
toggle quoted message
Show quoted text
Mike, did they warp at all during annealing or subsequent
machining?
I am also curious whether they will warp when you harden them
back.?
If they do, you will have to grind them back to straight.?
They stayed in the oven at 1550 about an hour. I shut the
oven off and left them in overnight to cool slowly. I did clean
the scale off before testing hardness, but I am still skeptical
of it being softer than 1018. An online source claims 4140
annealed is 12 HRC, so maybe it is plausible.
I have used carbide to cut hardened steel, but it is not very
enjoyable to do on a Clausing 8520 without coolant. The mill
does not have the girth to support the necessary tool pressure.
The risk of breaking endmills is high. I would rather save my
carbide for when I have no other options.
On 4/28/2024 12:16 AM, mike allen
via groups.io wrote:
Good deal . How long did ya cook them ?
thanks
animal
On 4/27/24 8:45 PM, Mike Poore
wrote:
Just an update in case anyone is
interested. I annealed the tool holders at 1550 F. Before
annealing, they tested at 45 HRC. After annealing, they
tested at 8 HRC. I have read I should use a B scale tester,
but I do not have one. A scrap piece of 1018 tested at 15
HRC, so these holders should be easy milling.
On 4/25/2024 11:37 AM, Mike
Poore via groups.io wrote:
I did a search for that number. The
indicates that is the Swedish equivalent to
4340.
Sorry for wasting everyone's time. I hate when people ask
easily answered questions and I am guilty. I found this
that lists the HT specs for most alloys.
1550F is within the annealing range of almost every alloy
on the list. 1500F is within the hardening range for
almost all alloys. I will have to do more research on
tempering, but for an insert holder there should be a wide
tolerance.
On 4/25/2024 1:17 AM,
Andrei via groups.io wrote:
Found a reference online to SS2541 being
used for tool bit holders. Maybe check that.?
The problem is I do not know the alloy. I guess I
will use the 4140 specs.
On 4/25/2024 12:59
AM, Andrei via groups.io wrote:
That is definitely a great option. I
don't have one so my go-to was carbide and
coolant.youbare in great shape with the oven
I have a heat treating oven right next to my
mill, so I would rather use the oven.
On 4/24/2024
11:02 PM, Andrei via groups.io wrote:
Are short of squirter bottles or
endmills?
Not an option for me.
On
4/24/2024 9:43 PM, Andrei via groups.io
wrote:
Use a carbide endmill and
coolant. No need to anneal
Anyone happen to know the alloy most
likely to be used for carbide insert tool
holders? My guess is 4140. I have four
that I need to mill down to work in an AXA
holder. They test at 45 HRC. Thinking
about annealing them before milling and
then heat treating again, so I would like
specs to use.
|
Mike, did they warp at all during annealing or subsequent machining?
I am also curious whether they will warp when you harden them back.?
If they do, you will have to grind them back to straight.?
toggle quoted message
Show quoted text
From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Mike Poore <mpoore10@...>
Sent: Sunday, April 28, 2024 11:10 AM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Insert Holder Alloy
?
They stayed in the oven at 1550 about an hour. I shut the oven off and left them in overnight to cool slowly. I did clean the scale off before testing hardness, but I am still skeptical of it being softer than 1018. An online source claims 4140 annealed
is 12 HRC, so maybe it is plausible.
I have used carbide to cut hardened steel, but it is not very enjoyable to do on a Clausing 8520 without coolant. The mill does not have the girth to support the necessary tool pressure. The risk of breaking endmills is high. I would rather save my carbide
for when I have no other options.
On 4/28/2024 12:16 AM, mike allen via groups.io wrote:
Good deal . How long did ya cook them ?
thanks
animal
On 4/27/24 8:45 PM, Mike Poore wrote:
Just an update in case anyone is interested. I annealed the tool holders at 1550 F. Before annealing, they tested at 45 HRC. After annealing, they tested at 8 HRC. I have read I should use a B scale tester, but I do not have one. A scrap
piece of 1018 tested at 15 HRC, so these holders should be easy milling.
On 4/25/2024 11:37 AM, Mike Poore via groups.io wrote:
I did a search for that number. The indicates that is the Swedish equivalent to 4340.
Sorry for wasting everyone's time. I hate when people ask easily answered questions and I am guilty. I found this
that lists the HT specs for most alloys. 1550F is within the annealing range of almost every alloy on the list. 1500F is within the hardening range for almost all alloys. I will have to do more research on tempering, but for an insert holder there
should be a wide tolerance.
On 4/25/2024 1:17 AM, Andrei via groups.io wrote:
Found a reference online to SS2541 being used for tool bit holders. Maybe check that.?
The problem is I do not know the alloy. I guess I will use the 4140 specs.
On 4/25/2024 12:59 AM, Andrei via groups.io wrote:
That is definitely a great option. I don't have one so my go-to was carbide and coolant.youbare in great shape with the oven
I have a heat treating oven right next to my mill, so I would rather use the oven.
On 4/24/2024 11:02 PM, Andrei via groups.io wrote:
Are short of squirter bottles or endmills?
Not an option for me.
On 4/24/2024 9:43 PM, Andrei via groups.io wrote:
Use a carbide endmill and coolant. No need to anneal
Anyone happen to know the alloy most likely to be used for carbide insert tool holders? My guess is 4140. I have four that I need to mill down to work in an AXA holder. They test at 45 HRC. Thinking about annealing them before milling and then heat treating
again, so I would like specs to use.
|
They stayed in the oven at 1550 about an hour. I shut the oven off
and left them in overnight to cool slowly. I did clean the scale off
before testing hardness, but I am still skeptical of it being softer
than 1018. An online source claims 4140 annealed is 12 HRC, so maybe
it is plausible.
I have used carbide to cut hardened steel, but it is not very
enjoyable to do on a Clausing 8520 without coolant. The mill does
not have the girth to support the necessary tool pressure. The risk
of breaking endmills is high. I would rather save my carbide for
when I have no other options.
On 4/28/2024 12:16 AM, mike allen via
groups.io wrote:
toggle quoted message
Show quoted text
Good deal . How long did ya cook them ?
thanks
animal
On 4/27/24 8:45 PM, Mike Poore wrote:
Just an update in case anyone is interested. I annealed the tool
holders at 1550 F. Before annealing, they tested at 45 HRC.
After annealing, they tested at 8 HRC. I have read I should use
a B scale tester, but I do not have one. A scrap piece of 1018
tested at 15 HRC, so these holders should be easy milling.
On 4/25/2024 11:37 AM, Mike Poore
via groups.io wrote:
I did a search for that number. The indicates that is the
Swedish equivalent to 4340.
Sorry for wasting everyone's time. I hate when people ask
easily answered questions and I am guilty. I found this that lists the HT specs
for most alloys. 1550F is within the annealing range of almost
every alloy on the list. 1500F is within the hardening range
for almost all alloys. I will have to do more research on
tempering, but for an insert holder there should be a wide
tolerance.
On 4/25/2024 1:17 AM, Andrei via
groups.io wrote:
Found a reference online to SS2541 being
used for tool bit holders. Maybe check that.?
The problem is I do not know the alloy. I guess I will
use the 4140 specs.
On 4/25/2024 12:59 AM,
Andrei via groups.io wrote:
That is definitely a great option. I
don't have one so my go-to was carbide and
coolant.youbare in great shape with the oven
I have a heat treating oven right next to my mill,
so I would rather use the oven.
On 4/24/2024 11:02
PM, Andrei via groups.io wrote:
Are short of squirter bottles or
endmills?
Not an option for me.
On 4/24/2024
9:43 PM, Andrei via groups.io wrote:
Use a carbide endmill and
coolant. No need to anneal
Anyone happen to know the alloy most likely
to be used for carbide insert tool holders? My
guess is 4140. I have four that I need to mill
down to work in an AXA holder. They test at 45
HRC. Thinking about annealing them before
milling and then heat treating again, so I
would like specs to use.
|
I did not have any problems machining my insert holders, I did nothing to them and used a carbide cutter.
Gary
|
Good deal . How long did ya cook them ?
thanks
animal
On 4/27/24 8:45 PM, Mike Poore wrote:
toggle quoted message
Show quoted text
Just an update in case anyone is interested. I annealed the tool
holders at 1550 F. Before annealing, they tested at 45 HRC. After
annealing, they tested at 8 HRC. I have read I should use a B
scale tester, but I do not have one. A scrap piece of 1018 tested
at 15 HRC, so these holders should be easy milling.
On 4/25/2024 11:37 AM, Mike Poore via
groups.io wrote:
I did a search for that number. The indicates that is the Swedish
equivalent to 4340.
Sorry for wasting everyone's time. I hate when people ask easily
answered questions and I am guilty. I found this that lists the HT specs
for most alloys. 1550F is within the annealing range of almost
every alloy on the list. 1500F is within the hardening range for
almost all alloys. I will have to do more research on tempering,
but for an insert holder there should be a wide tolerance.
On 4/25/2024 1:17 AM, Andrei via
groups.io wrote:
Found a reference online to SS2541 being used
for tool bit holders. Maybe check that.?
The problem is I do not know the alloy. I guess I will
use the 4140 specs.
On 4/25/2024 12:59 AM, Andrei
via groups.io wrote:
That is definitely a great option. I don't
have one so my go-to was carbide and coolant.youbare in
great shape with the oven
I have a heat treating oven right next to my mill, so
I would rather use the oven.
On 4/24/2024 11:02 PM,
Andrei via groups.io wrote:
Are short of squirter bottles or
endmills?
Not an option for me.
On 4/24/2024 9:43
PM, Andrei via groups.io wrote:
Use a carbide endmill and coolant.
No need to anneal
Anyone happen to know the alloy most likely
to be used for carbide insert tool holders? My
guess is 4140. I have four that I need to mill
down to work in an AXA holder. They test at 45
HRC. Thinking about annealing them before
milling and then heat treating again, so I would
like specs to use.
|
Just an update in case anyone is interested. I annealed the tool
holders at 1550 F. Before annealing, they tested at 45 HRC. After
annealing, they tested at 8 HRC. I have read I should use a B scale
tester, but I do not have one. A scrap piece of 1018 tested at 15
HRC, so these holders should be easy milling.
On 4/25/2024 11:37 AM, Mike Poore via
groups.io wrote:
toggle quoted message
Show quoted text
I did a search for that number. The indicates that is the Swedish
equivalent to 4340.
Sorry for wasting everyone's time. I hate when people ask easily
answered questions and I am guilty. I found this that lists the HT specs for
most alloys. 1550F is within the annealing range of almost every
alloy on the list. 1500F is within the hardening range for almost
all alloys. I will have to do more research on tempering, but for
an insert holder there should be a wide tolerance.
On 4/25/2024 1:17 AM, Andrei via
groups.io wrote:
Found a reference online to SS2541 being used
for tool bit holders. Maybe check that.?
The problem is I do not know the alloy. I guess I will use
the 4140 specs.
On 4/25/2024 12:59 AM, Andrei
via groups.io wrote:
That is definitely a great option. I don't
have one so my go-to was carbide and coolant.youbare in
great shape with the oven
I have a heat treating oven right next to my mill, so I
would rather use the oven.
On 4/24/2024 11:02 PM,
Andrei via groups.io wrote:
Are short of squirter bottles or
endmills?
Not an option for me.
On 4/24/2024 9:43
PM, Andrei via groups.io wrote:
Use a carbide endmill and coolant.
No need to anneal
Anyone happen to know the alloy most likely to
be used for carbide insert tool holders? My guess
is 4140. I have four that I need to mill down to
work in an AXA holder. They test at 45 HRC.
Thinking about annealing them before milling and
then heat treating again, so I would like specs to
use.
|
I’ve found that the generic carbide endmills in smaller sizes available on Amazon are not only cheap but completely satisfactory for most hobbyist uses. In fact, they’re way better than expected…
Gary
|
Cheaper to get a carbide endmill than to risk losing 4 holders to heat treat problems.
toggle quoted message
Show quoted text
From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Mike Poore <mpoore10@...>
Sent: Thursday, April 25, 2024 12:09 AM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Insert Holder Alloy
?
The problem is I do not know the alloy. I guess I will use the 4140 specs.
On 4/25/2024 12:59 AM, Andrei via groups.io wrote:
That is definitely a great option. I don't have one so my go-to was carbide and coolant.youbare in great shape with the oven
I have a heat treating oven right next to my mill, so I would rather use the oven.
On 4/24/2024 11:02 PM, Andrei via groups.io wrote:
Are short of squirter bottles or endmills?
Not an option for me.
On 4/24/2024 9:43 PM, Andrei via groups.io wrote:
Use a carbide endmill and coolant. No need to anneal
Anyone happen to know the alloy most likely to be used for carbide insert tool holders? My guess is 4140. I have four that I need to mill down to work in an AXA holder. They test at 45 HRC. Thinking about annealing them before milling and then heat treating
again, so I would like specs to use.
|
??? Aloris are? case hardened .
animal
On 4/25/24 8:37 AM, Mike Poore wrote:
toggle quoted message
Show quoted text
I did a search for that number. The indicates that is the Swedish
equivalent to 4340.
Sorry for wasting everyone's time. I hate when people ask easily
answered questions and I am guilty. I found this that lists the HT specs for
most alloys. 1550F is within the annealing range of almost every
alloy on the list. 1500F is within the hardening range for almost
all alloys. I will have to do more research on tempering, but for
an insert holder there should be a wide tolerance.
On 4/25/2024 1:17 AM, Andrei via
groups.io wrote:
Found a reference online to SS2541 being used
for tool bit holders. Maybe check that.?
The problem is I do not know the alloy. I guess I will use
the 4140 specs.
On 4/25/2024 12:59 AM, Andrei
via groups.io wrote:
That is definitely a great option. I don't
have one so my go-to was carbide and coolant.youbare in
great shape with the oven
I have a heat treating oven right next to my mill, so I
would rather use the oven.
On 4/24/2024 11:02 PM,
Andrei via groups.io wrote:
Are short of squirter bottles or
endmills?
Not an option for me.
On 4/24/2024 9:43
PM, Andrei via groups.io wrote:
Use a carbide endmill and coolant.
No need to anneal
Anyone happen to know the alloy most likely to
be used for carbide insert tool holders? My guess
is 4140. I have four that I need to mill down to
work in an AXA holder. They test at 45 HRC.
Thinking about annealing them before milling and
then heat treating again, so I would like specs to
use.
|
SACRILEDGE !? .. ok, an answer to a question not asked ... but I have made insert holders from bar 2024 aluminum ...? special limited use yes but up to the chip forces I was creating.??
be more than ok for threading, finishing, etc. ... also using up a few odd inserts you might find ...
ken, going where no real muchinust would dare to go ...
|
I did a search for that number. The
indicates that is the Swedish equivalent to 4340.
Sorry for wasting everyone's time. I hate when people ask easily
answered questions and I am guilty. I found this that lists the HT specs for most alloys. 1550F is within the
annealing range of almost every alloy on the list. 1500F is within
the hardening range for almost all alloys. I will have to do more
research on tempering, but for an insert holder there should be a
wide tolerance.
On 4/25/2024 1:17 AM, Andrei via
groups.io wrote:
toggle quoted message
Show quoted text
Found a reference online to SS2541 being used for
tool bit holders. Maybe check that.?
The problem is I do not know the alloy. I guess I will use
the 4140 specs.
On 4/25/2024 12:59 AM, Andrei via
groups.io wrote:
That is definitely a great option. I don't
have one so my go-to was carbide and coolant.youbare in
great shape with the oven
I have a heat treating oven right next to my mill, so I
would rather use the oven.
On 4/24/2024 11:02 PM,
Andrei via groups.io wrote:
Are short of squirter bottles or endmills?
Not an option for me.
On 4/24/2024 9:43 PM,
Andrei via groups.io wrote:
Use a carbide endmill and coolant. No
need to anneal
Anyone happen to know the alloy most likely to be
used for carbide insert tool holders? My guess is
4140. I have four that I need to mill down to work
in an AXA holder. They test at 45 HRC. Thinking
about annealing them before milling and then heat
treating again, so I would like specs to use.
|
It could be something such as 1045. Tool holders don’t need to be 4140. That doesn’t mean for certain that they aren’t, but medium carbon steel is fine. 1045 hardens to RC 45 after tempering at 375-400.
Mel
toggle quoted message
Show quoted text
On Apr 25, 2024, at 1:09?AM, Mike Poore <mpoore10@...> wrote:
?
The problem is I do not know the alloy. I guess I will use the 4140
specs.
On 4/25/2024 12:59 AM, Andrei via
groups.io wrote:
That is definitely a great option. I don't have
one so my go-to was carbide and coolant.youbare in great shape
with the oven
I have a heat treating oven right next to my mill, so I would
rather use the oven.
On 4/24/2024 11:02 PM, Andrei via
groups.io wrote:
Are short of squirter bottles or endmills?
Not an option for me.
On 4/24/2024 9:43 PM,
Andrei via groups.io wrote:
Use a carbide endmill and coolant. No need
to anneal
Anyone happen to know the alloy most likely to be
used for carbide insert tool holders? My guess is 4140.
I have four that I need to mill down to work in an AXA
holder. They test at 45 HRC. Thinking about annealing
them before milling and then heat treating again, so I
would like specs to use.
|
Found a reference online to SS2541 being used for tool bit holders. Maybe check that.?
toggle quoted message
Show quoted text
From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Mike Poore <mpoore10@...>
Sent: Thursday, April 25, 2024 1:09:21 AM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Insert Holder Alloy
?
The problem is I do not know the alloy. I guess I will use the 4140 specs.
On 4/25/2024 12:59 AM, Andrei via groups.io wrote:
That is definitely a great option. I don't have one so my go-to was carbide and coolant.youbare in great shape with the oven
I have a heat treating oven right next to my mill, so I would rather use the oven.
On 4/24/2024 11:02 PM, Andrei via groups.io wrote:
Are short of squirter bottles or endmills?
Not an option for me.
On 4/24/2024 9:43 PM, Andrei via groups.io wrote:
Use a carbide endmill and coolant. No need to anneal
Anyone happen to know the alloy most likely to be used for carbide insert tool holders? My guess is 4140. I have four that I need to mill down to work in an AXA holder. They test at 45 HRC. Thinking about annealing them before milling and then heat treating
again, so I would like specs to use.
|
It is a reasonable assumption?
toggle quoted message
Show quoted text
From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Mike Poore <mpoore10@...>
Sent: Thursday, April 25, 2024 1:09:21 AM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Insert Holder Alloy
?
The problem is I do not know the alloy. I guess I will use the 4140 specs.
On 4/25/2024 12:59 AM, Andrei via groups.io wrote:
That is definitely a great option. I don't have one so my go-to was carbide and coolant.youbare in great shape with the oven
I have a heat treating oven right next to my mill, so I would rather use the oven.
On 4/24/2024 11:02 PM, Andrei via groups.io wrote:
Are short of squirter bottles or endmills?
Not an option for me.
On 4/24/2024 9:43 PM, Andrei via groups.io wrote:
Use a carbide endmill and coolant. No need to anneal
Anyone happen to know the alloy most likely to be used for carbide insert tool holders? My guess is 4140. I have four that I need to mill down to work in an AXA holder. They test at 45 HRC. Thinking about annealing them before milling and then heat treating
again, so I would like specs to use.
|
The problem is I do not know the alloy. I guess I will use the 4140
specs.
On 4/25/2024 12:59 AM, Andrei via
groups.io wrote:
toggle quoted message
Show quoted text
That is definitely a great option. I don't have
one so my go-to was carbide and coolant.youbare in great shape
with the oven
I have a heat treating oven right next to my mill, so I would
rather use the oven.
On 4/24/2024 11:02 PM, Andrei via
groups.io wrote:
Are short of squirter bottles or endmills?
Not an option for me.
On 4/24/2024 9:43 PM,
Andrei via groups.io wrote:
Use a carbide endmill and coolant. No need
to anneal
Anyone happen to know the alloy most likely to be
used for carbide insert tool holders? My guess is 4140.
I have four that I need to mill down to work in an AXA
holder. They test at 45 HRC. Thinking about annealing
them before milling and then heat treating again, so I
would like specs to use.
|
That is definitely a great option. I don't have one so my go-to was carbide and coolant.youbare in great shape with the oven
toggle quoted message
Show quoted text
From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Mike Poore <mpoore10@...>
Sent: Thursday, April 25, 2024 12:57:57 AM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Insert Holder Alloy
?
I have a heat treating oven right next to my mill, so I would rather use the oven.
On 4/24/2024 11:02 PM, Andrei via groups.io wrote:
Are short of squirter bottles or endmills?
Not an option for me.
On 4/24/2024 9:43 PM, Andrei via groups.io wrote:
Use a carbide endmill and coolant. No need to anneal
Anyone happen to know the alloy most likely to be used for carbide insert tool holders? My guess is 4140. I have four that I need to mill down to work in an AXA holder. They test at 45 HRC. Thinking about annealing them before milling and then heat treating
again, so I would like specs to use.
|
I have a heat treating oven right next to my mill, so I would rather
use the oven.
On 4/24/2024 11:02 PM, Andrei via
groups.io wrote:
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Are short of squirter bottles or endmills?
Not an option for me.
On 4/24/2024 9:43 PM, Andrei via
groups.io wrote:
Use a carbide endmill and coolant. No need to
anneal
Anyone happen to know the alloy most likely to be used
for carbide insert tool holders? My guess is 4140. I have
four that I need to mill down to work in an AXA holder. They
test at 45 HRC. Thinking about annealing them before milling
and then heat treating again, so I would like specs to use.
|
Are short of squirter bottles or endmills?
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Show quoted text
From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Mike Poore <mpoore10@...>
Sent: Wednesday, April 24, 2024 10:38:03 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Insert Holder Alloy
?
Not an option for me.
On 4/24/2024 9:43 PM, Andrei via groups.io wrote:
Use a carbide endmill and coolant. No need to anneal
Anyone happen to know the alloy most likely to be used for carbide insert tool holders? My guess is 4140. I have four that I need to mill down to work in an AXA holder. They test at 45 HRC. Thinking about annealing them before milling and then heat treating
again, so I would like specs to use.
|
You can use a squit bottle to send coolant to the cut
toggle quoted message
Show quoted text
From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Mike Poore <mpoore10@...>
Sent: Wednesday, April 24, 2024 10:38:03 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Insert Holder Alloy
?
Not an option for me.
On 4/24/2024 9:43 PM, Andrei via groups.io wrote:
Use a carbide endmill and coolant. No need to anneal
Anyone happen to know the alloy most likely to be used for carbide insert tool holders? My guess is 4140. I have four that I need to mill down to work in an AXA holder. They test at 45 HRC. Thinking about annealing them before milling and then heat treating
again, so I would like specs to use.
|
