wyn
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- Cardiff
I've been interested in having a go at a bit of metal forging for a while, so with a couple of days off have started with a propane burner. I think this type is called a jet ejector...... naturaly aspirated (no blowers).
I have some refractory bricks ordered, so when they arrive i can just arrange them to give a forging chamber, bung the burner in and start heating stuff up.
The burner took about 8 hours to make but was pretty straight forward with a lathe.
Here are a couple of pics...
The burner is made from a 3/4" I.D. tube about 9" long with a 0.8 mig tip centred down the tube to deliver the gas. 4 slots are cut to allow air in. The tube in the background is the air choke that fits over the air slots and can be adjusted up and down to control air flow.
The three bolts are used to align the mig tip centraly down the burner tube. And you can see the choke covering the air slots.
The burner fixed in the vice ready for a test out. I bought a new regulator, hose and flash back to make things a bit safer. The regulator also has a pressure gauge to allow me to keep a track on settings and what works best. The "flare" on the end of the burner prevents the flame from "detatching" from the end of the burner. These are supposed to wear out pretty quick and should really be stainless.
Test fire
The finished burner.
Seems to work ok for a first go. I may then machine one out of some round bar once it's all adjusted and i then know the ideal dimentions.
A couple more pics here.
I have some refractory bricks ordered, so when they arrive i can just arrange them to give a forging chamber, bung the burner in and start heating stuff up.
The burner took about 8 hours to make but was pretty straight forward with a lathe.
Here are a couple of pics...
The burner is made from a 3/4" I.D. tube about 9" long with a 0.8 mig tip centred down the tube to deliver the gas. 4 slots are cut to allow air in. The tube in the background is the air choke that fits over the air slots and can be adjusted up and down to control air flow.
The three bolts are used to align the mig tip centraly down the burner tube. And you can see the choke covering the air slots.
The burner fixed in the vice ready for a test out. I bought a new regulator, hose and flash back to make things a bit safer. The regulator also has a pressure gauge to allow me to keep a track on settings and what works best. The "flare" on the end of the burner prevents the flame from "detatching" from the end of the burner. These are supposed to wear out pretty quick and should really be stainless.
Test fire
The finished burner.
Seems to work ok for a first go. I may then machine one out of some round bar once it's all adjusted and i then know the ideal dimentions.
A couple more pics here.
.....handy for a bit of casting though.
