Metalworking Hunttalkers!

[np307]

Got a fun one going on currently. Going to be a funnel for salt and sugar at a food plant. Going to put a 3" hole through the point and weld in a fitting that can swing between 4 barrels. Everything has to be seal welded. View attachment 352869View attachment 352870View attachment 352872

Got the frame welded together and then the funnel welded into the frame and all seams sealed up. Next week I'll put the hole in it and then weld up the fittings.

 

[Redmt]

Got the frame welded together and then the funnel welded into the frame and all seams sealed up. Next week I'll put the hole in it and then weld up the fittings. View attachment 352917View attachment 352918

It looks like you passed up a good opportunity for a lot of outside corner fusion welds. I guess that an inside non welded joint could cause product to hang in any weak fit up areas. All in all, it looks pretty nice.

 

[np307]

It looks like you passed up a good opportunity for a lot of outside corner fusion welds. I guess that an inside non welded joint could cause product to hang in any weak fit up areas. All in all, it looks pretty nice.

Are you talking about on the pyramid itself? I did weld the outside corners first on that. Since it's stainless and requires no seams, I welded the outside corners on pulse laying in .045 wire as necessary keeping the penetration minimal so I didn't sugar the inside. Then once the funnel was welded into the frame I came to the inside and welded those, also on pulse but just fusion with no wire.

 

[Redmt]

You fusion welded the inside joints? Good job, abit risky but good job. I probably would have done fusion on the outside and filler on the inside but it doesn't have my name on it! You da man, you do it your way! It looks pretty nice.

 

[np307]

You fusion welded the inside joints? Good job, abit risky but good job. I probably would have done fusion on the outside and filler on the inside but it doesn't have my name on it! You da man, you do it your way! It looks pretty nice.

Thank you. I love using pulse for stuff like that. Gives you all the heat you need but you can sit there for a while before it burns through. I used some scrap to dial in the settings so I was confident I wouldn't burn through.

 

[Redmt]

I was just thinking. I wonder how an added gas shield would work underneath the joint laying the pyramid so the outside joint would all be down hand and then use fusion. Then come back and run a "lay wire" technique on the inside? It would be double expensive on gas but I bet you would have some really attractive welds.

 

[np307]

I was just thinking. I wonder how an added gas shield would work underneath the joint laying the pyramid so the outside joint would all be down hand and then use fusion. Then come back and run a "lay wire" technique on the inside? It would be double expensive on gas but I bet you would have some really attractive welds.

It would work. Definitely would have to burn a lot of gas. Only problem with fusing the outside corners is that the angle they meet at due to being a pyramid isn't 90 degrees. So it really ends up being a groove weld, almost like a bevel you have to fill.

When I weld the tubing in for the 3" connection, I will probably purge through it and tape a box to the inside of the funnel to hold the gas so I can lay a heavy bead on the outside.

 

[Redmt]

Good point on the -90* angle. Holding an appropriate angle overlap would be a bitch. I hadn't thought about that. Carry on! You do nice work. It would be fun to watch over your shoulder, I would probably learn something.