|
|
I got a 4x3 open root pass I need to copper in with 1/16 dualshield mild steel wire any ideas
Reply:Purpose of open root is to achieve reinforcement on the back side. If you have a copper backing plate you prevent reinforcement which means you don't need open root. If you have an open root with copper backing, fluxcore on copper is going to be nasty with smoke, spatter, etc.I think you need to revisit the joint design and process.
Reply:I agree 👍 Dave
Originally Posted by Woznme
Purpose of open root is to achieve reinforcement on the back side. If you have a copper backing plate you prevent reinforcement which means you don't need open root. If you have an open root with copper backing, fluxcore on copper is going to be nasty with smoke, spatter, etc.I think you need to revisit the joint design and process.
Reply:
Originally Posted by smithdoor
I agree 👍 Dave
Reply:I typically do not use a backing bar.About only time I used was on thin gauge. Please post a photo?Dave
Originally Posted by thruwall
This open root is the bottom of a defect cavity so you have no option to redesign anything. As for the copper backing you have a 3/8 piece of round stock welded to the backside of the copper because your coming in a flanged opening in which you had to bend that 3/8 round stock 3 different ways just to get to the backside of the defect cavity
Reply:
Originally Posted by thruwall
This open root is the bottom of a defect cavity so you have no option to redesign anything. As for the copper backing you have a 3/8 piece of round stock welded to the backside of the copper because your coming in a flanged opening in which you had to bend that 3/8 round stock 3 different ways just to get to the backside of the defect cavity
Reply:
Originally Posted by 12V71
Have the "engineers" designed a WPS for this repair? 3"x4" hole is good sized, depending on the position it could be a biotch to float that much slag out. It could be better to put a couple of layers of appropriate hardwire in first? And that backer better be thick on a hole that size. They might have to suck it up and allow a reasonable steel backer that becomes part of the repair. I have done heavy steel casting repair that way (2-1/2" to 3" thick) but the steel backer wasn't an issue because it was only a heavy equipment part. Quite the quandary here.
Reply:Do you have a drawing?Dave
Originally Posted by thruwall
100% x-ray with no access to back weld or arc steel backing plate
Reply:
Originally Posted by thruwall
100% x-ray with no access to back weld or arc steel backing plate
Reply:OP,Aren't you this guy who has mostly done it all?Why are you asking for advice here? You should be the one giving out advice.The first part of that post seems to say you are an expert in copper backing welds.
Sent from my SM-G996U using TapatalkMillermatic 252 MIGMiller Dynasty 200DX TIGMiller Spectrum 625 PlasmaAltas 12x36 Metal LatheBridgeport Milling Machinewww.psacustomcreations.com
Reply:You would think the " expert" on air arc gouging knows about " carbons", which are actually graphite. Use a graphite plate( also known as a carbon plate) as a backer instead of copper .
Reply:I have given the problem some thought. I think your best solution would be to hire me to come and fix it for you.
Reply:A few of us may not be a one inch arc gouging, nuclear submarine welding experts........... But we know what the white stuff on chicken shiit is.Last edited by Freebirdwelds; 3 Weeks Ago at 09:59 AM.Reason: SpeelingLincoln 330MPXLincoln Power Mig 256Lincoln LN-25X Wire FeederMagnum PRO 250LX GT Spool GunModified Lincoln 225¼ Ton of Torches OFC-A OFG-AAir Carbon Arc GougingEverlast 62i Plasma CutterIngersoll Rand Type 30 14hpInstagram: #Freebird Welds
Reply:I would be interested in learning about the mild steel casting.www.urkafarms.com
Reply:I agree with you.I have ask for drawings or photos to see what problem. Dave
Originally Posted by psacustomcreations
OP,Aren't you this guy who has mostly done it all?Why are you asking for advice here? You should be the one giving out advice.The first part of that post seems to say you are an expert in copper backing welds.
Sent from my SM-G996U using Tapatalk
Reply:Yes I know all about carbons, I've had to use them to at times to weld on when I could not get to certain parts of the opening or if I couldnt get a good fit with a piece of copper
Reply:Yes I am done it for over 15 yrs how can one give advice without finding out if there is a need for advice
Reply:
Originally Posted by smithdoor
i agree with you.I have ask for drawings or photos to see what problem. Dave
Reply:How do you weld copper and steel together. Might be a skill I need.Last edited by tapwelder; 3 Weeks Ago at 02:42 PM.
Reply:From your description you do need a backing bar.Need a photo or drawing to see the problem. Dave
Originally Posted by thruwall
i thought it was pretty self explanatory. Take away the problem of coming in from a flange opening amd having to bend 3/8 rod 3 directions to get to the backside of cavity opening. Get 2 pieces of 4" thick plate fit up for open root test. Now air arc a cavity 6x4 at the top of the plate with a root opening of 4x3, copper in root pass to pass x-ray with no backweld. If you want to make it interesting arc or grind backside of plate, 1 plate only so you cant just hold a flat pieces of copper on the root opening. Most people cant or dont know how to even weld the 3/8 round stock to the copper without destroying it or they cant it welded to the copper.
Reply:Ok pick your filler 5/32 rod or 1/16 dual shield, inconel 112,182 monel 190, 7018, 71t1, 8018b2, 8018b2l, 9018b3, 9018b3l, 10018, 10018d2, 11018, 12018,630, ferralium 255, 308,309,316,320,347, 68.55, 41, or some mokb stuff
Reply:In this case you must use a torch to heat the copper till it starts to glow then you should be able to weld the 3/8round stock to the back of the copper wIth a good weld then dip it into a Bucket of water. Dipping the Copper in a bucket of water after every pass is one of the most important factors when Welding on copper if you dont you overheat the copper and have a mess to deal with becauseYou just welded it to the backside of the open cavity
Reply:Are we ready to start welding
Reply:
Originally Posted by thruwall
Are we ready to start welding
Reply:Ya I figured as much just a bunch of drunk mr know it alls.that really know nothing, se yaBuuurp!
Reply:I guess no photo. Dave
Originally Posted by thruwall
Ya I figured as much just a bunch of drunk mr know it alls.that really know nothing, se ya
Reply:
Originally Posted by thruwall
Ya I figured as much just a bunch of drunk mr know it alls.that really know nothing, se ya
Reply:
Originally Posted by thruwall
Ya I figured as much just a bunch of drunk mr know it alls.that really know nothing, se ya
Reply:
Originally Posted by thruwall
I got a 4x3 open root pass I need to copper in with 1/16 dualshield mild steel wire any ideas
Reply:
Originally Posted by thruwall
Ya I figured as much just a bunch of drunk mr know it alls.that really know nothing, se ya
Reply:I agreeDave
Originally Posted by Woznme
Instead of being a braggin smart a. Why don't you post up a pic of what you're doing so we can understand.We can't all be super geniuses like you.
Reply:
Originally Posted by smithdoor
I agreeDave
Reply:For me? you shouldn't have. I mean really, I don't like flowers, you should have saved them for your mama. Although she doesn't deserve them either because she couldn't see you taught English very well.
Reply:I never knew why exactly but we used to use copper backers on full penetration moment connections and beam splices where the backer had the be removed as in bridge code then we were told we couldn't use copper anymore and for a while we use ceramic chiclets which cams on foil with adhesive. The ceramic work great except i alway clamped something under because sometime the glue got to hot and the weld could suddenly fall out on you. Then we couldn't use the ceramic any more and had to use compatible steel backing bars which had to be gouged off after. I assumed the copper got prohibited because it might alloy somehow with the root pass, it was a shame because that stuff worked well - this was all flux core no gas. i got really sick of carbon arcing backing bars with crap access and then having to fill tiny digs with stick where use couldn't see it let alone get a grinder to it - so all tedious die grinding and little fill until the inspector gets tired. Would ceramic work in this situation? The dual shield wire can weld over it's own slag somewhat because the flux does not gasify to create a shield. I too would like to see a picture and a weld procedure.
Reply:I do disagree with Woznme on school or books. The rest time we are same page. It education is need in this field.Dave
Originally Posted by thruwall
JUST GOT BACK FROM THE STORE BOUGHT SO,E MOTHERS DAYS GIFTS FOR woznme, smithdoor, psacustomcreations, villageblacksmith,and freebirdwelds I GUESS BETWEEN ALL OF YOU SINCE THEY HAD A SPECIAL ON A 6-ROLL PACK MAYBE BETWEEN THE FIVE 5 OF YOU YOU COULD FIGURE IT OUT. I WILL NOT MAKE IT ANY MORE DIFFICULT AT THE BOTTOM OF THE OPEN CAVITY NOT ADDING THAT IT OPENS UP ON TOP OF A DIVIDING WALL, DIVIDING TWO PASSAGES WITH 1/2 INCH RADIUS THAT MUST BE COPPERED IN ALSO? HERES YOUR FIRST CLUE-EMPLOYER WOULD NOT LET YOU DO IT OR ATTEMPT TO DO IT WITH 1/16 DUAL SHIELD WIRE. 5/32 SMAW ON 1/4 INCH THICK PIECE OF COPPER WELDED TO A 3/8 IN STEEL ROD AMD 1 HELPER IS ALL YOU GET. YOU DONT NEED NO DAM PICTURE NO PHOTO, 4X3 OPEN ROOT BOTTOMLESS CAVITY 4" DEEP!
Reply:
Originally Posted by thruwall
Ya I figured as much just a bunch of drunk mr know it alls.that really know nothing, se ya
Reply:Here's the real thing the original poster did not describe the field conditions with enough specificity. Presumably there is print maybe not because it's a defect but in such a case most of the time there would be a request for information (RFI) submitted so an engineer could specify a weld procedure in consultation with welding contractor with full knowledge of the field conditions which here appear to include limited or no access to the back side of the weld. The stubborn refusal to provide information after you ask a question is a little strange. Weld procedure = fill up the hole with weld metal flush to the back of the hole that's one giant stress riser in what may be a crack prone section "cast mild steel" 3-Ps preheat post-heat & Pray.
Reply:
Originally Posted by thruwall
JUST GOT BACK FROM THE STORE BOUGHT SO,E MOTHERS DAYS GIFTS FOR woznme, smithdoor, psacustomcreations, villageblacksmith,and freebirdwelds I GUESS BETWEEN ALL OF YOU SINCE THEY HAD A SPECIAL ON A 6-ROLL PACK MAYBE BETWEEN THE FIVE 5 OF YOU YOU COULD FIGURE IT OUT. I WILL NOT MAKE IT ANY MORE DIFFICULT AT THE BOTTOM OF THE OPEN CAVITY NOT ADDING THAT IT OPENS UP ON TOP OF A DIVIDING WALL, DIVIDING TWO PASSAGES WITH 1/2 INCH RADIUS THAT MUST BE COPPERED IN ALSO? HERES YOUR FIRST CLUE-EMPLOYER WOULD NOT LET YOU DO IT OR ATTEMPT TO DO IT WITH 1/16 DUAL SHIELD WIRE. 5/32 SMAW ON 1/4 INCH THICK PIECE OF COPPER WELDED TO A 3/8 IN STEEL ROD AMD 1 HELPER IS ALL YOU GET. YOU DONT NEED NO DAM PICTURE NO PHOTO, 4X3 OPEN ROOT BOTTOMLESS CAVITY 4" DEEP!
Reply:
Originally Posted by Lis2323
Wow. Just like the crazyazz girlfriend that keeps coming back
.Sent from my iPad using Tapatalk
Reply:
Originally Posted by tapwelder
How do you weld copper and steel together. Might be a skill I need.
Reply:I think (RFI) he talking is Radio France Internationale or Radio Frequency Interference.CG stands for crazyazz girlfriend or center of gravity. Dave
Originally Posted by Lis2323
Wow. Just like the crazyazz girlfriend that keeps coming back
.Sent from my iPad using Tapatalk
Reply:Maybe this book will help you find the answer. https://www.amazon.ca/How-Win-Friend...45153110&psc=1
Sent from my iPad using Tapatalk:
Reply:
Originally Posted by Lis2323
Maybe this book will help you find the answer. https://www.amazon.ca/How-Win-Friend...45153110&psc=1
Sent from my iPad using Tapatalk
Reply:There is no three abbreviations. Just a real wordy boring book too. Dave
Originally Posted by Lis2323
Maybe this book will help you find the answer. https://www.amazon.ca/How-Win-Friend...45153110&psc=1
Sent from my iPad using Tapatalk
Reply:
Originally Posted by Lis2323
Maybe this book will help you find the answer. Sent from my iPad using Tapatalk
Reply:Doughnuts work too.Next you pull over just box of Doughnuts 🍩 and coffee ☕. Unless you are good looking girl 👧 then just show will do.Dave
Originally Posted by 12V71
Beer and good Brisket works too.
Reply:I think the OP has discovered that he's a "WELDER MY A$$!" He had to ask about the open weld with a copper backer, but in the other thread or on the other site said he was an expert, expert is defined as "EX" is a has been, and a "SPURT" is a drip under pressure, The drip has dropped!NRA LIFE MEMBERUNITWELD 175 AMP 3 IN1 DCMIDSTATES 300 AMP AC MACHINELET'S GO BRANDON!"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety. BENJAMIN FRANKLIN
Reply:
Originally Posted by thruwall
Ya I figured as much just a bunch of drunk mr know it alls.that really know nothing, se ya
Reply:
Originally Posted by smithdoor
Doughnuts work too.Next you pull over just box of Doughnuts and coffee ☕. Unless you are good looking girl then just show will do.Dave |
|
发表于 2022-5-19 11:02:18