Auger has broken in our biomass boiler
35mm centre shaft
Flights are 90mm od
Approx 1500mm long
The main stress point is where the flights reverse so this is constantly twisting the shaft every time it starts-runs for 4 seconds every 20 seconds so a lot of stop/starts
I think the original shaft is mild steel just doing a spark test doesn't seem very hard
I have welded it back together twice and built the flights up with weld several times so think its now time for a whole new unit
I've had the flights made for the new auger out of stainless to hopefully improve wear resistance a bit but not sure if stainless would be good for the shaft due to the constant twisting force would it work harden and snap?
En8?
Needs to have a keyway machined in the one end for the drive gear and be suitable for welding
35mm centre shaft
Flights are 90mm od
Approx 1500mm long
The main stress point is where the flights reverse so this is constantly twisting the shaft every time it starts-runs for 4 seconds every 20 seconds so a lot of stop/starts
I think the original shaft is mild steel just doing a spark test doesn't seem very hard
I have welded it back together twice and built the flights up with weld several times so think its now time for a whole new unit
I've had the flights made for the new auger out of stainless to hopefully improve wear resistance a bit but not sure if stainless would be good for the shaft due to the constant twisting force would it work harden and snap?
En8?
Needs to have a keyway machined in the one end for the drive gear and be suitable for welding