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what do you guys think?
Heat treatment is another option to achieve the same thing but requires equipment not normally found in a home workshop. i.e. something to bring it to 600C and hold it there for a while to ensure all of it is at that temperature and most importantly allow it to cool down evenly. Usually done by allowing it to cool inside the furnace as the furnace cools down.
Sticking it in the centre of a bonfire can work, and provides a long cooling time. Jo
What does it actually do to the metal by allowing it to oxidize?
Hi Guys,Without getting at all technical...............no major company seeking to maximise their profit margin is going to adopt a process which is not going to give a positive benefit, be it buying a field, producing parts 5 years in advance of them being required; etc.For the technically minded.http://www1.eere.energy.gov/manufacturing/resources/metalcasting/pdfs/age_strengthening.pdfBest RegardsBob
I have been told that the carbon will precipitate and be dispersed in solution over time.
Trim>The carbon lowers the melting temperature, that's a wanted property. <trim
The Iron Carbon phase diagram seems to contradict that statement.
QuoteThe Iron Carbon phase diagram seems to contradict that statement.Not that much.Not so much, because carbon steels stops at 2.06% of carbon. Not so much, because the diagram is misleading. Right of the eutectic, the solid line going upwards is NOT where you have molten metal. The dashed line that stops at 1253 °C and the solid horizontal line is liquid too."L + C(graphite) is liquid plus primary Fe3C.The section (roughly) lined out by 0.16, 2.1 and 4.2 is liquid too (liquid + gamma-mc (mixed crystals)).So above 2.06 % C, you have won and a constant melting temperature of 1153 °C.Nick
All of these numbers are a bit technical for me busy relaxing at home... All I can say is the latest two sash weight have been recovered from the ashes of the bonfire and they cut on the mechanical hacksaw like butter Which is some what different from when they started Jo
what do you guys think?John.