Difficulty melting copper - The Home Foundry
2019年8月26日 · Straight copper sucks to cast with. It helps if you get it started and smash a beer bottle and lay the glass on top of the melt. Add more copper by tucking it under the glass. Before pouring, scrape off the glass and dross. You'll get a cleaner melt this way. What is that thing anyways that requires you to run 100% copper?
Strange crucible issue after first copper melt.
2021年9月25日 · This forces the charcoal to float on the copper and make more contact with the melting copper when starting to float. Then on top of the liquid, it captures the oxygen from the air. And *all* copper has to be molten: unmolten (or re-frozen because of a too cold crucible bum) copper goes unnoticed as it sinks in the liquid, like most substances ...
Difficulty melting copper | Page 2 | The Home Foundry
2019年9月29日 · 6 Lbs Copper and 5 lbs Zinc the extra pound of zinc will be lost in the melting process now place all the Cu in the bottom of the crucible . cover it with Brass small pieces are best of course. the brass will melt covering and protecting the copper .if you have over a half crucible let it run wild til the copper is all melted.
Using wood to refine copper: anyone heard of poling?
2021年1月1日 · Things tend to meander a bit in these discussions. That was a discussion of using wood and sawdust to treat melts of several metals where this is discussing the use wood in processing of copper ore.....but there is there is some connection between brass melting with copper smelting. I questioned the efficacy and chemistry cited in using wood to ...
Induction Melting Furnaces for The Hobbyist - The Home Foundry
2021年12月9日 · It is also recommended that they only be charged 70% of brimful. Problem is the recommended installation procedure semi-permanently installs the crucible in your furnace so it isn't very conducive to crucible swaps for melting different metals. Most things point toward induction furnaces being configured for a particular melting duty.
Arc melting: why don't steel electrones not sustain arc - The Home …
2024年6月30日 · The latter is a cylindrical casting of 2" diameter and 1 1/2" high with a hemispherical cavity in it. There I put pieces of steel to be melted. I got this idea that some commercial lab furnaces have this principle: using a copper crucible for melting metals with a much higher melting point, up till tungsten.
Difficulty melting copper | Page 3 | The Home Foundry
2019年8月26日 · Difficulty melting copper. Discussion in 'General foundry chat' started by FKreider, Aug 26, 2019.
Homemade induction melter. - The Home Foundry
2021年11月21日 · With a DC welder and carbon rods you can also tiny (100g) amounts of (stainless) steel. I alloyed SS 304 my electric arc melting the mild steel, chrome and nickel together and made a few castings. But an induction furnace is on my bucket list when they become affordable and reliable. The latter especially as the DIY kits sold by Amazon or ebay ...
Mixed copper solder fittings - The Home Foundry
2020年4月4日 · Hmm, I would personally use the copper to make aluminum-bronze alloy. Which consists of 90% copper and 10% aluminum. As for the solder I believe it melts at a much lower temperature than the copper, so I would just heat the solder up to melting point and wipe it off with steel wool. By the way aluminum-bronze alloy is supposedly a pretty hard ...
Propane: Forced air is more efficient is my experience
2023年8月26日 · Melting the metal at a faster rate means shorter run times that reduce energy loss and fuel burnt. I find heating the furnace mass is my biggest bottleneck at the moment: it takes 75 minutes to melt three crucibles full of aluminium: the first crucible takes 38 minutes, the second is ready at 22 minutes and the third is ready at 15 minutes.