Jump to content
I Forge Iron

Tips to get furnace hotter?

Recommended Posts

Hey all, I’ve built a gas cylinder foundry furnace and a burner.  It works great for melting Aluminum, but I want to melt copper. I ran it for like an hour and a half. The copper got bright orange and shimmery and very soft, but didn’t quite melt.  I feel like I was very close to melting temp and just need a few (hundred) more degrees.  I’ve adjusted the color in my photo to more accurately show the color (though it was glowing brighter). What can I do to eek some more heat from my burner?  I ran it up to 20 psi. My burner is using a .023 mig tip. The burner is 3/4 pipe. Should I use a mig tip with a bigger hole? A wider diameter pipe? Higher psi?  Should I add a blower to blow air down the pipe? Will any of those things help?  Anything else I should consider?  9A934F28-27C6-4389-ACF4-49E9256FA043.thumb.jpeg.0f3a65c131905b4065e0565c41e0adf5.jpeg849452D9-FA2F-4830-AC92-25B27B4F1F37.thumb.jpeg.0c4c7b22d64e61740fb94222458d7389.jpeg

Link to comment
Share on other sites

 Have you asked the person who designed the burner? If you didn't follow proven burner plans you should, they've already made the big mistakes so you don't have to. 

The mixing tube looks too long, a 3/4" dia. mixing tube should be 6" long and linear burners benefit from an output nozzle flare.

However, before you start rebuilding anything I recommend you do a little reading in the propane burner section specifically Burners 101. It'll give you a handle on what's what and the terminology we use so you can ask good questions and understand the answers. Saves a LOT of time.

Frosty The Lucky.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...