jamesp
Cave Dweller
Member since October 2012
Posts: 36,561
|
Post by jamesp on Dec 15, 2017 23:45:59 GMT -5
opening size? This one is 4". Can build 4" - 5" - 6". OK for 14 pound Vibrasonic hopper. Got other parts for easy 6" opening. To fit future 5+" opening on a soon to be built larger Vibrasonic hopper.
|
|
quartz
Cave Dweller
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,352
|
Post by quartz on Dec 15, 2017 23:56:21 GMT -5
Interesting video, sure tells a tale.
|
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,561
|
Post by jamesp on Dec 16, 2017 6:47:45 GMT -5
Interesting video, sure tells a tale. Note the 3 dashes on the outside of the barrel showing the constant slippage of the batch on the barrel. Pretty sure that is the primary source of barrel wear. The rip off selling those thin wall SDR barrels told me to run them at 60 RPM to reduce slippage wear after I told him his barrels wore out in 2 months. Not before I commissioned them. They wore thru in 2 months at 30 RPM. Too late, and he did not want to replace them with his junk. Damned if I were going to buy another from him.
|
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,561
|
Post by jamesp on Dec 16, 2017 8:20:35 GMT -5
This was a 3 minute weld. Simply stuck the corners on the frying pan and stuck them together. Had to use a bit of strength to break them apart. Look Mom, no glue !
|
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,561
|
Post by jamesp on Dec 16, 2017 8:53:35 GMT -5
And these thick wall 6" end caps will be welded together with a plate between them for a divider. This is a thicker wall version. To be made into a dual compartment Vibrasonic barrel for doing up to two 5 inch rocks on the Vibrasonic. Super thick walls chosen for being able to screw into if need be. Or making some deep welds. Plenty thick enough to thread and screw a drain into the bottom. Handy feature for a vibe. No problem running SiC 30 in this one. A drain would expedite daily clean outs if coarse grinding in it. Can weld a lip around it out of 1/4" thick HDPE for cover to mate to. Will have to have a big mouth for dropping a 5 inch rocks into it. If this works a step up to the next size pipe - 8 inch for running yet bigger rocks.
|
|
|
Post by youp50 on Dec 16, 2017 9:04:31 GMT -5
Back to the corner welded plates. Only about half the melt zone was fused. Are you using alcohol wipes to degrease the area to be fused?
|
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,561
|
Post by jamesp on Dec 16, 2017 9:42:24 GMT -5
Back to the corner welded plates. Only about half the melt zone was fused. Are you using alcohol wipes to degrease the area to be fused? Your timing is perfect - great minds. I am prepping for the big weld youp as we type. Was getting ready to go back to the youtube video and find the proper solvent. Will rubbing alcohol work ? #1 - Wife is out of town - mandatory. Her big teflon frying pan... I took notjustone's advice and used a tank head for the other heating pan. Only one big enough frying pan available. I will set the fittings to be welded on the pan for 15-20 minutes at 200F to do a deep pre-heat. #2 - A dog food bowl to set rounded end into so I can bare down hard with a stable base. Better to put a dish rag over the dog bowl so it won't slide around when pushing down.
|
|
|
Post by youp50 on Dec 16, 2017 9:55:06 GMT -5
I recall isopropyl alcohol wipes. 99% alcohol iso vs 70% alcohol rubbing.
|
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,561
|
Post by jamesp on Dec 16, 2017 10:08:43 GMT -5
I recall isopropyl alcohol wipes. 99% alcohol iso vs 70% alcohol rubbing. Figured you were going to say that. Moonshine ? ha kidding Thought about that teflon frying pan having oil. Used Dawn and very hot water and rubbed her down hard. Then alcohol.
|
|
|
Post by captbob on Dec 16, 2017 10:16:23 GMT -5
jamesp if wife sees this thread
|
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,561
|
Post by jamesp on Dec 16, 2017 10:20:08 GMT -5
jamesp if wife sees this thread She will know. I cleaned the stove up real nice for photos. First thing, why is the stove so clean ? Guarantee she will notice. Friggin master detectives.
|
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,561
|
Post by jamesp on Dec 16, 2017 10:25:55 GMT -5
I recall isopropyl alcohol wipes. 99% alcohol iso vs 70% alcohol rubbing. youp, this guy was not too particular. I went with the 70%. Pre-heat below boil for 15 to 20 minutes. Pans carefully centered about burners, pipes carefully centered in pans. There is a variable temperature profit from center to edge of pan...
|
|
|
Post by HankRocks on Dec 16, 2017 11:28:41 GMT -5
Hmmmm.... I can hear it now, "this bacon has a funny taste to it, almost like a plastic"..... Of course the fact that you're posting pictures of the crime on a public forum pretty much makes this a slam dunk for the Prosecution.
|
|
|
Post by captbob on Dec 16, 2017 11:36:21 GMT -5
Tell her your hot chocolate boiled over, so you cleaned the stove.
|
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,561
|
Post by jamesp on Dec 16, 2017 11:39:30 GMT -5
Hmmmm.... I can hear it now, "this bacon has a funny taste to it, almost like a plastic"..... Of course the fact that you're posting pictures of the crime on a public forum pretty much makes this a slam dunk for the Prosecution. Living dangerously over here in Georgia Henry. Getting ready to stick them together shortly. Kinda like cooking a roast. I notice one is starting to stick to the pan a bit so I upped the temp on the other to keep them as close as possible in heat level. I like the teflon pan better. Next step is to look for a small bead around the full perimeter of both of them.
|
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,561
|
Post by jamesp on Dec 16, 2017 11:41:41 GMT -5
Tell her your hot chocolate boiled over, so you cleaned the stove. May look closer to licorice. I already melted some samples onto the oven parts and pans and found easy to remove with a bit of scrubbing. Gotta prepare for forensic analysis.
|
|
|
Post by Rockoonz on Dec 16, 2017 12:52:57 GMT -5
I wonder if any of the teflon will migrate and spoil your bond? I helped my employer to develop processes for splicing tpv extrusions several years back, borrowed a splicer then built our own. The Santoprene tpv is a PP base, don't know how that compares to PE, but in my experience getting a lot of heat to the surface to be welded in a hurry, before the heat breaks down the polymer, yields the most durable splice. Never tried to do the kind of cross sections you're looking at though.
Since your pieces were originally molded there were possibly mold release agents with either a silicone emulsion or teflon used, don't know if there are others specific to PE as my experience is rubber and TPE's. Either will kill a splice and will require a little mechanical removal, sanding is best(solvent clean, sand, solvent clean again, >70% isopropyl SB fine). If your material has any vinyl in it, sanding will be necessary immediately before splicing to prevent vinyl migration and splice failure. The interesting thing about vinyl migration failures is they can occur over time, a previously tested splice can just fall apart on it's own as the vinyl replaces the bond.
|
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,561
|
Post by jamesp on Dec 16, 2017 13:30:49 GMT -5
I wonder if any of the teflon will migrate and spoil your bond? I helped my employer to develop processes for splicing tpv extrusions several years back, borrowed a splicer then built our own. The Santoprene tpv is a PP base, don't know how that compares to PE, but in my experience getting a lot of heat to the surface to be welded in a hurry, before the heat breaks down the polymer, yields the most durable splice. Never tried to do the kind of cross sections you're looking at though. Since your pieces were originally molded there were possibly mold release agents with either a silicone emulsion or teflon used, don't know if there are others specific to PE as my experience is rubber and TPE's. Either will kill a splice and will require a little mechanical removal, sanding is best(solvent clean, sand, solvent clean again, >70% isopropyl SB fine). If your material has any vinyl in it, sanding will be necessary immediately before splicing to prevent vinyl migration and splice failure. The interesting thing about vinyl migration failures is they can occur over time, a previously tested splice can just fall apart on it's own as the vinyl replaces the bond. This may be the best way to answer your question Lee. The weld on the right was done in a teflon pan parts sitting down on faces to be bonded. No solvent and a rough cut with a skill saw with no surface prep. Apparently this HDPE is specifically targeted for heat bonding. I beat this bond on concrete with the claw side of a 16 ounce hammer as hard as I could hit it. Tried my best to break the weld: I'll go ahead and show you my process for the first full circle weld: Set up. Pre heated for 20 minutes(actually over an hour because people stopped by) Be sure to center pans over burner and pipe over burner: Then electric burner was cranked up to cherry red till bead formed Then I went to the floor with both and pushed them together hard. Line them up well !! Bead looks just short of machine made 200 psi weld. Inside of barrel has full circle bead the same The dogs didn't seem to interested. Grind bead off and cut snout shorter. Hols 3 gallons. So about a 35 pound barrel.
|
|
|
Post by Rockoonz on Dec 16, 2017 14:01:48 GMT -5
Looks like you have a process, and mad skills with a skil saw, my results on trying to cut straight lines differ considerably. I imagine the high density will hold up for a long time, your splice looks like a goodun too. Were the fail barrels from the guy in WA state, he just kinda disappeared a while back.
|
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,561
|
Post by jamesp on Dec 16, 2017 14:37:15 GMT -5
Looks like you have a process, and mad skills with a skil saw, my results on trying to cut straight lines differ considerably. I imagine the high density will hold up for a long time, your splice looks like a goodun too. Were the fail barrels from the guy in WA state, he just kinda disappeared a while back. No way I could cut a pipe that big that square with a skill saw Lee. But I can cut it dead square with this little table saw with a clamped cutting fence. Easy to do. Keep in mind the saw cuts quickly melt into oblivion when this pipe ends hit the frying pan.
|
|