| Gallery, Projects and General > How do I?? |
| Temper steel dowel pins |
| (1/2) > >> |
| doubleboost:
Hi Lads I have some parallel steel dowel pins They are that hard if you put one in a vice and hit it with a hammer it will snap I put a few in the log burner last nite , (also great for drying welding electrodes) this morning they can be filed and machined :drool: :drool: :drool: :drool: Would I just re temper it with water like silver steel (drill Rod) Or do I need Sperm oil :jaw: :jaw: (10 40) I am wanting to make a centre punch for a video project Regards John |
| philf:
--- Quote from: doubleboost on December 28, 2013, 04:17:37 PM ---Hi Lads I have some parallel steel dowel pins They are that hard if you put one in a vice and hit it with a hammer it will snap I put a few in the log burner last nite , (also great for drying welding electrodes) this morning they can be filed and machined Would I just re temper it with water like silver steel (drill Rod) Or do I need Sperm oil 10 40 I am wanting to make a centre punch for a video project Regards John --- End quote --- John, I think oil hardening would be safer. I use old vegetable oil with silver steel and similar steels and it gets plenty hard enough for making cutting tools. (I usually temper them in the deep fat fryer! but I think you would need to temper at a higher temp for a centre punch or else it would be too brittle.) I have found some hardened dowel pins which are in 100CR6 steel. This needs heating to 840C before quenching in oil. Hope this helps. Cheers. Phil. |
| mattinker:
John, you have several, why not experiment, test in water and oil? Regards, Matthew |
| krv3000:
hi john if its the ones from me witch i think they are you need oil to put them in we just reharden them the same as silver steel |
| doubleboost:
Thanks Bob I have put a few more in the fire Like Mathew suggests I will have a bit experiment John |
| Navigation |
| Message Index |
| Next page |