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In the past I would purchase low hydrogen rods such as 7018 in ten pound hermitically sealed containers, as shown below. 1. Ten pounds of rods
The problem is that once the container is opened you need to store it in an oven at 250° F, to prevent the rods from absorbing moisture, otherwise the rods couldnt be used for any critical application. I do mostly TIG, MIG and Flux Core welding, so I dont use too many rods in my shop. I have never invested in a shop size rod oven and even if I had one, I would be hesitant to pay for the electricity to keep it powered for months without using any rods. As a result, I decided to purchase my 7018 rods in one pound hermitically sealed containers. I stock 3/32, 1/8 and 5/32 sizes. The rods in these smaller containers are double the cost of rods in the 10 lb containers, but the waste would be much less, especially considering that I only use a few rods for each job.2. One pound rod containers
I have outside job planned, to weld a bracket for a boat hoist, which is located on Lake Saint Claire. I am waiting for a day that isnt raining, has low wind that my friend and customer, Mark is available. I was rusty on out of position stick welding, so I have mocked up and practiced welding the required joints. Between practice sessions I have stored the low hydrogen rods in my portable rod oven. 3. Rod oven closed
4. Rod oven open
Below is a picture of the rod holder that goes into the portable rod oven. I added the ring in the middle to keep the rods together. 5. Rod holder
Smith Oxyacetylene TorchMiller Dynasty 200DXLincoln SP-250 MIG WelderClausing/Coldchester 15" Lathe16" DuAll Saw15" Drill Press7" x 9" Swivel Head Horizontal Band Saw20 Ton Arbor Press BridgeportLincoln LE 31 MP & Lincoln 210 MP
Reply:To make the ring the first step was to bend a bar into a ring.6. Bending bar
7. Ready for welding
8. Ring welded
9. Rod holder complete
I keep my conventional rods (all rods except low hydrogen) in a bun warmer to keep them dry.10. Bun warmer closed
Smith Oxyacetylene TorchMiller Dynasty 200DXLincoln SP-250 MIG WelderClausing/Coldchester 15" Lathe16" DuAll Saw15" Drill Press7" x 9" Swivel Head Horizontal Band Saw20 Ton Arbor Press BridgeportLincoln LE 31 MP & Lincoln 210 MP
Reply:11. Bun warmer open
Here in Michigan, it has been raining almost every day. I left an open package of 6011 rods out for one week, between practice sessions. The rods absorbed moisture and sputtered when I tried to use them. The package says to heat the rods from 70 to 80° C (158 to 176° F) for 30 to 60 minutes before using. My portable rod oven was set to 250° F, because I was storing 7018 rods in it. I figured that the rods contain Cellulose, so the higher temperature should be ok, because paper burns at ~ 480° F. It turns out I was wrong and the rods started to smoke. The baked rods changed to a darker color as shown below. I used the baked rods to complete my practice and they seemed to weld ok. In the future I will re-heat 6010/6011 rods to 160° F as directed.12. New and baked rods
Hopefully I will be able to weld the boat hoist this next weekend.-DonSmith Oxyacetylene TorchMiller Dynasty 200DXLincoln SP-250 MIG WelderClausing/Coldchester 15" Lathe16" DuAll Saw15" Drill Press7" x 9" Swivel Head Horizontal Band Saw20 Ton Arbor Press BridgeportLincoln LE 31 MP & Lincoln 210 MP
Reply:Don, if u add another horiz piece to join, u'll have made a divider for when u got two diff rods in it - 3/32 one side, 1/8 on other
Reply: As a result, I decided to purchase my 7018 rods in one pound hermetically sealed containers.
Reply:
Originally Posted by 123weld
Don, if u add another horiz piece to join, u'll have made a divider for when u got two diff rods in it - 3/32 one side, 1/8 on other
Reply:I would be getting another thermometer, and check that oven,,those rods should not discolor at 250 degrees F.,,Heck, 250 is just barely above the temp to boil water,,
Maybe the thermostat lets the temp run way over-temp before turning off,, or something like that? I thought cellulose burned at Fahrenheit 451?? Fahrenheit 451 was the name of the book about book burning,, IIRC,,(books burn at 451 degrees F. ,,)Parchment paper that we make cookies with does not discolor at 325,, you gotta get closer to 400 for parchment paper to turn color, like those rods.At 400, the oven we bake in is probably overshooting a little,,, https://en.wikipedia.org/wiki/Fahrenheit_451
Reply:
Originally Posted by 12345678910
Those one pound containers are not sealed airtightIf there is no tennis ball pop top, you have to dry the rods.I buy the same ones here, they have a sticker to keep the top and bottom together in handling, but the container is slip fit.If you read the paperwork that comes with 7018, they include instructions on how to redry the rods.Something like 600*F for hours to drive the moisture out.
Reply:
Originally Posted by SweetMK
I would be getting another thermometer, and check that oven,,those rods should not discolor at 250 degrees F.,,Heck, 250 is just barely above the temp to boil water,,
Maybe the thermostat lets the temp run way over-temp before turning off,, or something like that? I thought cellulose burned at Fahrenheit 451?? Fahrenheit 451 was the name of the book about book burning,, IIRC,,(books burn at 451 degrees F. ,,)Parchment paper that we make cookies with does not discolor at 325,, you gotta get closer to 400 for parchment paper to turn color, like those rods.At 400, the oven we bake in is probably overshooting a little,,, https://en.wikipedia.org/wiki/Fahrenheit_451
Reply:Looks great .Wend I was a lot field welding I had one just like one I big fan of hot rods the best welding per spec.Dave
Originally Posted by Don52
In the past I would purchase low hydrogen rods such as 7018 in ten pound hermitically sealed containers, as shown below. 1. Ten pounds of rods
The problem is that once the container is opened you need to store it in an oven at 250° F, to prevent the rods from absorbing moisture, otherwise the rods couldnt be used for any critical application. I do mostly TIG, MIG and Flux Core welding, so I dont use too many rods in my shop. I have never invested in a shop size rod oven and even if I had one, I would be hesitant to pay for the electricity to keep it powered for months without using any rods. As a result, I decided to purchase my 7018 rods in one pound hermitically sealed containers. I stock 3/32, 1/8 and 5/32 sizes. The rods in these smaller containers are double the cost of rods in the 10 lb containers, but the waste would be much less, especially considering that I only use a few rods for each job.2. One pound rod containers
I have outside job planned, to weld a bracket for a boat hoist, which is located on Lake Saint Claire. I am waiting for a day that isnt raining, has low wind that my friend and customer, Mark is available. I was rusty on out of position stick welding, so I have mocked up and practiced welding the required joints. Between practice sessions I have stored the low hydrogen rods in my portable rod oven. 3. Rod oven closed
4. Rod oven open
Below is a picture of the rod holder that goes into the portable rod oven. I added the ring in the middle to keep the rods together. 5. Rod holder
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发表于 2021-9-1 23:14:14