Re: [Emc-users] OT: Question about steel for cold forming
On 07/11/2018 02:52 PM, Leonardo Marsaglia wrote: Hello Ed, I plan to thread the bolts with rollers. Axial or radial? Axial would be awkward if they are already headed. The main concern for me was if the 1045 steel can be cold forged for this purpose of making the head of the bolts. I would look for Youtube videos, there should be several videos on cold heading that would explain different materials and methods. I used to have one bookmarked that showed how you placed the blank in a guide, the rolls came in from the side, the blank rolled a few times, and the rolls retracted. I use axial rollers which have the blank rotating and the rolls are fed onto the part. Ed. -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: Question about steel for cold forming
Hello Ed, I plan to thread the bolts with rollers. The main concern for me was if the 1045 steel can be cold forged for this purpose of making the head of the bolts. I've machined forged camshafts of 1045 steel but they were made with the hot forging method. I must say I have zero experience in the process of forging, we only machined and heat treated the camshafts but the forging process was made by another company. 2018-07-10 13:25 GMT-03:00 Leonardo Marsaglia : > Hello Dave. > > The idea is to achieve a maximum hardness 25 HRc after cold forging with > heat treatment. Before the forging I would like the less hardness possible > of course. > > These values are arbitrary and are subject to change, but to start the > idea is that. > > > 2018-07-10 13:15 GMT-03:00 Dave Cole : > >> So these need to be hardened after cold forging ? >> >> You want them to have a max 25 HRc after forging and prior to heat >> treatment? >> >> Dave >> >> >> >> On 7/10/2018 11:54 AM, Leonardo Marsaglia wrote: >> >>> Hello to all. >>> >>> I'm trying to figure out wich is the best material for making cold formed >>> bolts wich need to have 25 HRc of maximum hardness. >>> >>> I was thinking about using 1022 steel wich is suitable for cold forging >>> but >>> I'm afraid the hardness process will be much more complicated than just >>> quenching and tempering. >>> >>> Then I was thinking about 1045 steel but I'm not sure how good it would >>> be >>> for the cold forging process. >>> >>> Do you have any hints or advices about this? >>> >>> Thank you as always! >>> >>> Leonardo. >>> >>> -- >>> Check out the vibrant tech community on one of the world's most >>> engaging tech sites, Slashdot.org! http://sdm.link/slashdot >>> ___ >>> Emc-users mailing list >>> Emc-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/emc-users >>> >> >> >> -- >> Check out the vibrant tech community on one of the world's most >> engaging tech sites, Slashdot.org! http://sdm.link/slashdot >> ___ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > > -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: Question about steel for cold forming
Hello Dave. The idea is to achieve a maximum hardness 25 HRc after cold forging with heat treatment. Before the forging I would like the less hardness possible of course. These values are arbitrary and are subject to change, but to start the idea is that. 2018-07-10 13:15 GMT-03:00 Dave Cole : > So these need to be hardened after cold forging ? > > You want them to have a max 25 HRc after forging and prior to heat > treatment? > > Dave > > > > On 7/10/2018 11:54 AM, Leonardo Marsaglia wrote: > >> Hello to all. >> >> I'm trying to figure out wich is the best material for making cold formed >> bolts wich need to have 25 HRc of maximum hardness. >> >> I was thinking about using 1022 steel wich is suitable for cold forging >> but >> I'm afraid the hardness process will be much more complicated than just >> quenching and tempering. >> >> Then I was thinking about 1045 steel but I'm not sure how good it would be >> for the cold forging process. >> >> Do you have any hints or advices about this? >> >> Thank you as always! >> >> Leonardo. >> >> -- >> Check out the vibrant tech community on one of the world's most >> engaging tech sites, Slashdot.org! http://sdm.link/slashdot >> ___ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > > > -- > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: Question about steel for cold forming
On 07/10/2018 10:54 AM, Leonardo Marsaglia wrote: Hello to all. I'm trying to figure out wich is the best material for making cold formed bolts wich need to have 25 HRc of maximum hardness. I was thinking about using 1022 steel wich is suitable for cold forging but I'm afraid the hardness process will be much more complicated than just quenching and tempering. 1022 steel will not harden using the ordinary methods, but it is nice to cold head. Then I was thinking about 1045 steel but I'm not sure how good it would be for the cold forging process. 1045 is much more useful for threaded screw use, cold heads well and hardens well. Do you have any hints or advices about this? How do you plan to thread them? Cut thread is more difficult chucking. Thread rolling is the standard procedure. Thank you as always! Leonardo. -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: Question about steel for cold forming
So these need to be hardened after cold forging ? You want them to have a max 25 HRc after forging and prior to heat treatment? Dave On 7/10/2018 11:54 AM, Leonardo Marsaglia wrote: Hello to all. I'm trying to figure out wich is the best material for making cold formed bolts wich need to have 25 HRc of maximum hardness. I was thinking about using 1022 steel wich is suitable for cold forging but I'm afraid the hardness process will be much more complicated than just quenching and tempering. Then I was thinking about 1045 steel but I'm not sure how good it would be for the cold forging process. Do you have any hints or advices about this? Thank you as always! Leonardo. -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
