reminds me of a story about a ship's engine with a broken piston top.. they were far from port..but had a well equipped engine room with a lathe..the chief wondered how they would affect a repair as he made himself a coffee...looking at the oil stove gave him an idea he "chucked up " the piston in the lathe and cut the broken top out leaving as much as he could around the edges he the turned one of the cast iron stove lids down just enough that when the piston was heated and the lid cooled the two fell together in a perfect marriage he said it got them home and to his knowledge was never changed...
You saw "cast iron" and "welding". I am still waiting for the cast iron. He welded that as if he wanted to get home early. He touched the molten pool with the tungsten just before he laid it on it's side. Then he TRIED to melt out the porosity. Did you see the sparks fly. He should have ground it out before finishing . I have no idea what filler rod he used, but it looked a bronze type. I think the piston may have been cast steel, which is why he could weld it the way he did. Should have used stainless steel filler wire, though.
He cut into that piston with a cutoff wheel like a bad ass. He surely has done this type of work before and probably many times. Nice job! That's a real welder.
Yeah I was thinking the same. You're really free handing the cutout with an angle grinder outside in your yard? You're either a moron or a special breed of pro, turns out it was the latter. Awesome video.
Why the negativity in some posts.. This a very difficult repair that is carefully and expertly carried out. In most places this would be death of part failure, here, made to live another day.
Jennifer WhiteWolf I feel like he did an amazing job except for the last 10%. I feel that it would have been very easy for him to fill all those pin holes in especially with Tig.
tig needs the cleanest surfaces - he should have cleaned the area. Sanding, blasting, ... and in the end with aceton. Also clean the bead after each torch turn off. you also have to preheat the thing seems kind of crappy tig work.
lol there is nothing clean about cast.... Someone needs to go back to school or try a weld repair like this for themselves otherwise your comment does not hold any weight.
I have done this myself, I would have done a more thourough cleaning, Then placed it in my oven and pre heated it to 550f over four hours. Kept there over night. After welding replace in oven over night to reduce stress. I would have used my needle gun on the weld before using the hammer also to remove stresses. It works for me. ChiefD
I've done quite a bit of TIG welding of cast iron. I prefer nickel 99 TIG wire. A lot of good welders like brazing cast iron, though. They usually use a torch. A little pre heat and slow cooling seems to help.
Difficult weld at the best of times, but I wouldn't have tig welded that. I've always welded cast iron with standard arc welders using suitable rods. Before welding the item is groved as necessary and heated to a very high temperature, somewhat less than red. The weld is hammered in the same way to stress relieve, then cooled as slowly as possible. I've welded several vises that have broken at the neck very successfully with this method. It is necessary that the item be made of decent quality cast iron.
i dont mean to be off topic but does anyone know of a trick to get back into an instagram account? I somehow forgot the password. I would love any tricks you can give me.
@Jaden Coleman i really appreciate your reply. I got to the site through google and I'm in the hacking process now. I see it takes a while so I will get back to you later with my results.
That was a pleasure to watch, thank you. This weld is going to get a beating with high compression and with the heating and cooling cycles I am really curious how well it holds up.
That is a hard weld to make! That piston top is so impregnated with extra carbon from being in high heat application where soot is produced from burning fossil fuel. That trash boiling out of that piston top will make it fight any filler metal flowing onto it.
TIG weld steel straps on the cam towers for additional strength for bigger camshafts, no preheat. Weld 1 inch then go to furthest tower and weld 1 inch. The idea is to let things cool off before going back to 1st weld. It's closer to TIG brazing than actual welding as the head doesn't actually melt, just "sweats".
Peening is a nice trick :o) I need to get into that sort of weld relief. Although, mag-ally seems to be my thing at the moment. Let the ally rod blob down into the surface and then work it in before the magnesium gets angry and leaves the party.
Weil ich schon schlechte Erfahrungen mit massigen Teilen gemacht habe hätte ich den Kolben auf min. 200 Grad vorgewärmt. Aber er wird das nicht das erste Mal machen.
Soo many internet welders that have never even picked up a torch...First off, Its a 12-50hp engine...there wont be too much stress on this piston. Also, he using aluminum bronze filler which means hes brazing not welding...His goal was to eliminate the crack so it wouldn't spread and fill in the crater he made doing so. Which is why hes brazing in aluminum bronze. Its not a structural repair, that's why there wasn't too much of a need to preheat. It could have been done cleaner and better, but this will do the job just fine for its intended purpose.
Schöner Nasenkolben! ob das die Wärmespannungen später dauerhaft aushält und mitmacht ist bei Krümmern auch oft ein Problem schön geschweißt und reißt dann gern wieder ein
Meine Güte was seid ihr doch alle krümelkacker.lasst doch den Mann seinen Kolben schweißen so wie er es für richtig hält?Der macht das bestimmt nicht zum ersten Mal und wenn dann hat er doch den Schaden und nicht ihr Besserwisser!
This is usually true. A bit of preheat won't do any harm. Just remember that "cast iron" includes many grades. Some are easily weldable with minimal prep and common fillers. Some cannot be fusion welded and will require brazing or silver solder to be repaired or joined.
We used to re-crown pistons for ships and we had to heat them in the furnace for hours then put on our insulated gloves and turn the mig wide open and basically spray arc them. Even with the insulated bunker gloves we would still get huge water blisters on the toos of our hands, sucked but had to be done. Cool video.
actually i did weld it a few times mostly the car Spindles with stick electrode and when i preheated and post heated it it was great but i had the option to preheat with oxy acethylene and then throw it into the owen after the welding. I think the preheat was not introduced because of the size here.
Not badly done, But I think I would have taken out a larger area, I suspect some of the area around the fix is going to fail . I would have ground down all of the orange peel areas and used a light acid to see if I was into good metal or not. Then tig the snot outta it/grind /flap wheel it all out .
I have had much better results by preheating the cast before welding and using a air chisel for shot peaning to help relieve the stress. Not a bad job 👍
Under inspection I’m shore piston is heat warped out of specs, and visually you can see impurities from the main surface and pin holes. This means trap air and impurities under the weld. It’s Going to crack over time.
Better him than me damn I spent an hour after our building aluminum rails back up that were silicone and oil impregnated not something that I like doing nasty smoke stinky yeah miserable
An sich hast du recht. Aber anscheinend auch keine Ahnung. Wenn man Guss schweißen will muss man es Spannungsarm glühen und es wird bei ungefähr 200 Grad Materialtemperatur geschweißt UND auch NICHT mit WIG sondern immer Autogen. Das was dieser Herr da im Video macht ist total falsch. Das hält auch bloß von morgens bis mittags.
@@Nordmanntanne96 Da hast du recht, Ahnung vom Gussschweißen habe ich nicht wirklich, habe ich erst ein Mal gemacht. Aber Do it yourself finde ich immer gut. Danke für die ausgiebige Info, denn das mit dem Glühen wusste ich gar nicht 😊👍
Interesting and cool. Im sure no problem, like the man said another 1000 hrs replace, its not like a motorcycle piston, that is aluminum or zinc, that's iron, more forgiving.
этому двигателю все равно, это двухтактный полудизельный одноцилиндровый мотор в 10л объемом ,работающий на сырой нефти , максимум оборотов 500 в минуту
@@BigBoss-em3bz ну возьми и загугли Lanz Bulldog, древний трактор с одноцилиндровым двухтактным нефтяным двигателем, также керосиновый двигатель, двигатель с калильной головкой, калоризаторный двигатель, полудизель
@@user-mo5vn7jv1i Верное замечание , но , видимо , это делается больше для демонстрации возможности ремонта и вряд-ли этот поршень будет установлен на рабочий двигатель . Хотя , чем черт не шутит ...
I dont know if he did preheat, but he didnt do post-weld cooling procedure....he stopped welding and then started grinding right away...And people there say, we are haters who say fancy shit
To answer the question.. YES! To minimize problems due to stress you must A Pre-Heat over hours, do the repair and then Re-Heat it up to say five hundred hold that for a few hours an then Reduce the temp fifty degrees per hr till you can remove it by hand. It’s little over kill maybe, but it’s always worked for me and my Grandad he was an old school Blacksmith coke forge anvil the works. I was in the Seabees for twenty Five years, you hang around Battalions, CBU’s, and NCTC’s long enough you learn just about everything you need. ChiefD
Great job in saving that part that is now probably irreplaceable but one thing i wanted to say is not to have a cigarette lighter near your welding work why your welding its downright dangerous and i have heard of a welder that was killed from a cigarette lighter exploding in his front shirt pocket after a hot weld specksle had landed on it pleased "BE WARNED" accidents have happened otherwise keep up the great effort of keeping those old tractors alive and they will still be going well and truly after all todays new junk will be on the scrapheap.
Appears no preheat and die grind shaping radices looks like a nickel base filler rod good AC I hope no die grind after passes it's a must to do check temp 450° or so finish grind fill any perocity put back in Kool down oven .Then hope!.
Should have drilled out the end of crack first. This is TIG brazing not welding. He used a bronze rod because it has give while the cast iron does not. This prevents the cast iron from cracking again. No if he used a nickel rod it would of been welding. Nickel also does what bronze does, has give to prevent the cast iron from cracking.
I'm curious too. So no end of crack drilling. Brazing cast iron which you can do. But how is that low melting point bronze going to hold up to the high heat in the cylinder with at least 23 to 1 compression? That is what I am curious about. Not the craftsmanship.
F- No preheat, no holes drilled at the ends of the crack, porosity galore, god knows how many inclusions, and no slow cooling afterwards. That thing will grenade in short order lol.
@@mihailpetrovici5044 when repairing a crack you always find both ends of the crack and drill holes. It's harder to crack the radius of the hole than just leaving it unattended and less likely to crack back out when doing the welding process from the heating and shrinking when being welded and run in the engine.
Моё мнение,что у поршня свойство металла крепче,чем у привариваемой аллюминиевой проволки и шов со временем треснет! Проще новый поставить-на нём выработка есть ещё....
Плохо вы знакомы с теорией сварки, существуют швы, в несколько раз прочнее самого ремонтируемого изделия, тут скорее вопрос в другом, в какой среде проводилась сварка и при помощи каких присадок, в данном случае тиг с омедненным прутком, учитывая геометрию поршня и состояние на момент ремонта, то скажем трещина образовалась от перегрева и детонации, основная юбка осталось целой, во время проходов, он делал конусные швы, тем самым "кернил" шов, выскачить условно не должен, далее граница швов, вот тут сомнительно, зачищать почему то не стал и обезжиривать тоже.. А как же оксидная плёнка? Проще говоря и так сойдёт))) я такое встречал.. Ну так себе занятие, всё это не надолго, при не соблюдении вышеизложенного
reminds me of a story about a ship's engine with a broken piston top.. they were far from port..but had a well equipped engine room with a lathe..the chief wondered how they would affect a repair as he made himself a coffee...looking at the oil stove gave him an idea he "chucked up " the piston in the lathe and cut the broken top out leaving as much as he could around the edges he the turned one of the cast iron stove lids down just enough that
when the piston was heated and the lid cooled the two fell together in a perfect marriage he said it got them home and to his knowledge was never changed...
I'm a simple man. I see "cast iron" and "welding " in one sentence I click like button.
You saw "cast iron" and "welding". I am still waiting for the cast iron. He welded that as if he wanted to get home early. He touched the molten pool with the tungsten just before he laid it on it's side. Then he TRIED to melt out the porosity. Did you see the sparks fly. He should have ground it out before finishing . I have no idea what filler rod he used, but it looked a bronze type. I think the piston may have been cast steel, which is why he could weld it the way he did. Should have used stainless steel filler wire, though.
@@derekhaydon4656 make a video and show us all how it’s done
He cut into that piston with a cutoff wheel like a bad ass. He surely has done this type of work before and probably many times. Nice job! That's a real welder.
Yeah I was thinking the same. You're really free handing the cutout with an angle grinder outside in your yard? You're either a moron or a special breed of pro, turns out it was the latter. Awesome video.
I have been welding near 50 years..and must say that was a excellent fix...
Yep
Love the Chopin in the background makes it so ominous.
Why the negativity in some posts.. This a very difficult repair that is carefully and expertly carried out. In most places this would be death of part failure, here, made to live another day.
Jennifer WhiteWolf I feel like he did an amazing job except for the last 10%. I feel that it would have been very easy for him to fill all those pin holes in especially with Tig.
tig needs the cleanest surfaces - he should have cleaned the area. Sanding, blasting, ... and in the end with aceton.
Also clean the bead after each torch turn off.
you also have to preheat the thing
seems kind of crappy tig work.
lol there is nothing clean about cast.... Someone needs to go back to school or try a weld repair like this for themselves otherwise your comment does not hold any weight.
Well it was a braze...
I have done this myself, I would have done a more thourough cleaning, Then placed it in my oven and pre heated it to 550f over four hours. Kept there over night. After welding replace in oven over night to reduce stress. I would have used my needle gun on the weld before using the hammer also to remove stresses. It works for me. ChiefD
I've done quite a bit of TIG welding of cast iron. I prefer nickel 99 TIG wire. A lot of good welders like brazing cast iron, though. They usually use a torch. A little pre heat and slow cooling seems to help.
That is a massive piston. Lanz Bulldog is another one of my favorite tractors along with International Harvester Cub Cadet and Cub Lo-Boy
My grandfather is 79 yo and still craving about the bulldog he drove to the scrapyard in the late 50s
I would like to have seen the teardown and rebuild of the engine also . That was one heck of a repair 👍👍🇺🇸
Lanz bulldogs are old two stroke single cylinder hot bulb engine powered tractors, repair probably not that hard
Difficult weld at the best of times, but I wouldn't have tig welded that. I've always welded cast iron with standard arc welders using suitable rods. Before welding the item is groved as necessary and heated to a very high temperature, somewhat less than red. The weld is hammered in the same way to stress relieve, then cooled as slowly as possible. I've welded several vises that have broken at the neck very successfully with this method. It is necessary that the item be made of decent quality cast iron.
Interesting, what rods would you suggest, as I am about to embark on a repair to my cast iron wood burner?
Got this reccomended after watching the visio race video on big single cylinder engines
When he holds on to the guard on that grinder gives me chills. My Buddy almost cut his thumb off like that.
i dont mean to be off topic but does anyone know of a trick to get back into an instagram account?
I somehow forgot the password. I would love any tricks you can give me.
@Nicholas Brentley Instablaster :)
@Jaden Coleman i really appreciate your reply. I got to the site through google and I'm in the hacking process now.
I see it takes a while so I will get back to you later with my results.
@Jaden Coleman it did the trick and I now got access to my account again. I am so happy:D
Thanks so much, you saved my ass :D
@Nicholas Brentley Glad I could help :)
Ahh Chopin's Funeral March.... and you are playing it all the way through... I LOVE IT.
That was a pleasure to watch, thank you. This weld is going to get a beating with high compression and with the heating and cooling cycles I am really curious how well it holds up.
Wahnsinn, das weiß aber einer was er macht! Super Arbeit! Respekt! 👌🏼
I thought my diesel engine was over built wow look at that old tractors piston. Great job.
when the hammer sped up I did my woody wood pecker imitation in my living room,I never knew how much my wife hated cartoon characters till now
Good for another 50 years. Excellent welding job. Thanks for sharing this.
Its not. Apparently.
some blind people following the sheeple herd :D
@@rixogtr why
Zemzem Dağdelen watch it again and think
@@rixogtr if you wont explain your words then dont say anything this is internet
Peening the metal to minimize stress cracking.
Peening lol 😉
@@speedy-cc that's the correct term .
That is a hard weld to make! That piston top is so impregnated with extra carbon from being in high heat application where soot is produced from burning fossil fuel. That trash boiling out of that piston top will make it fight any filler metal flowing onto it.
instead of silicon bronze he should use aluminum bronze with ac to cook out the trash..
I use silicon bronze on cast iron Pinto heads.
do they hold? With or without preheat?
TIG weld steel straps on the cam towers for additional strength for bigger camshafts, no preheat. Weld 1 inch then go to furthest tower and weld 1 inch. The idea is to let things cool off before going back to 1st weld. It's closer to TIG brazing than actual welding as the head doesn't actually melt, just "sweats".
Peening is a nice trick :o) I need to get into that sort of weld relief. Although, mag-ally seems to be my thing at the moment. Let the ally rod blob down into the surface and then work it in before the magnesium gets angry and leaves the party.
The fact that it’s cast and it came out that good astonished me
Oh boy do I wanna see that Lanz it belongs to.
A beautiful welding job accomplished. I envy you're talent.
well that's what i'm calling a piston!!
Right do they even make pistons like that anymore
It's a 1 cylinder 10L motor
@@zacharyp10 Its a 2 stroke unit, you shouldnt forget
I also only weld while wearing my Top Gun Jacket! LOL I Love it!!!
😂😂😂👍
Hi im from south africa and do similar tig repairs...i think you did an excellent job sir👍👍👍
Whats the filler rod?
Thumbs up to yay. You did a better job of repair with your grinder than I could have with a milling machine.Very niceRon in Ohio usa
It would be great to be able to see the puddle.
Yes i was hoping to see the puddle aswell
Weil ich schon schlechte Erfahrungen mit massigen Teilen gemacht habe hätte ich den Kolben auf min. 200 Grad vorgewärmt. Aber er wird das nicht das erste Mal machen.
Soo many internet welders that have never even picked up a torch...First off, Its a 12-50hp engine...there wont be too much stress on this piston. Also, he using aluminum bronze filler which means hes brazing not welding...His goal was to eliminate the crack so it wouldn't spread and fill in the crater he made doing so. Which is why hes brazing in aluminum bronze. Its not a structural repair, that's why there wasn't too much of a need to preheat. It could have been done cleaner and better, but this will do the job just fine for its intended purpose.
looks like aluminum bronze filler rod with some awesome tig techniques
Schöner Nasenkolben! ob das die Wärmespannungen später dauerhaft aushält und mitmacht ist bei Krümmern auch oft ein Problem schön geschweißt und reißt dann gern wieder ein
Meine Güte was seid ihr doch alle krümelkacker.lasst doch den Mann seinen Kolben schweißen so wie er es für richtig hält?Der macht das bestimmt nicht zum ersten Mal und wenn dann hat er doch den Schaden und nicht ihr Besserwisser!
Genau!
Gut gemacht.Vielleicht hätte man den Kolben auf einer Herdplatte aufwärmen sollen?
Alle haben gesagt, dass geht nicht. Dann kam einer, der wusste das nicht und hat es einfach gemacht.
And I always thought you had to heat cast iron up to weld it, learn something new every day.
This is usually true. A bit of preheat won't do any harm. Just remember that "cast iron" includes many grades. Some are easily weldable with minimal prep and common fillers. Some cannot be fusion welded and will require brazing or silver solder to be repaired or joined.
We used to re-crown pistons for ships and we had to heat them in the furnace for hours then put on our insulated gloves and turn the mig wide open and basically spray arc them. Even with the insulated bunker gloves we would still get huge water blisters on the toos of our hands, sucked but had to be done. Cool video.
Look at the filler color as he peens... it's a bronze braze
I love the chipping out the crack method. I do the same thing on Alloy 40 HF repairs
That's exactly what I want inside my corolla
To all screaming: how about showing us a video of you guys welding a piece of cast iron?
they cant, they have only googled it. shit ill bet my left nut they had to google the tractor its out of...
actually i did weld it a few times mostly the car Spindles with stick electrode and when i preheated and post heated it it was great but i had the option to preheat with oxy acethylene and then throw it into the owen after the welding. I think the preheat was not introduced because of the size here.
@@dzozepe try to wrap around some copper wire around the electrode. and while youre welding hammer the iron inside the cast iron..that works great
Great video, music which seemed to suit the task rather well. I am curious to know of any pre and post heat treatment used?
😯 heard about this but never seen it done until now
Not badly done, But I think I would have taken out a larger area, I suspect some of the area around the fix is going to fail . I would have ground down all of the orange peel areas and used a light acid to see if I was into good metal or not. Then tig the snot outta it/grind /flap wheel it all out
.
I have had much better results by preheating the cast before welding and using a air chisel for shot peaning to help relieve the stress. Not a bad job 👍
Gute Arbeit mit dieser Pistongen.
Will this fit in my Honda?
+krap101 it will
maybe if you take back seats out
Put Honda engine inside the piston add wheels and drive it arround.
krap101 no it wont!
its bigger than your Honda.
Under inspection I’m shore piston is heat warped out of specs, and visually you can see impurities from the main surface and pin holes. This means trap air and impurities under the weld. It’s Going to crack over time.
It's a frikin Lanz bulldog piston mate. The gap between zylinder and wall is almost a millimeter by factory.. There's not much spec to this after all
МДА. За такую работу гроша жалко.
There was no hole drilled at the beginning and end of the crack it will happen again . That's a lot of work to have happen again .
Better him than me damn I spent an hour after our building aluminum rails back up that were silicone and oil impregnated not something that I like doing nasty smoke stinky yeah miserable
That was some fine dentistry.
Guss schweißen muss man auch erstmal können, also Respekt👍👍👍
Gutes video
An sich hast du recht. Aber anscheinend auch keine Ahnung. Wenn man Guss schweißen will muss man es Spannungsarm glühen und es wird bei ungefähr 200 Grad Materialtemperatur geschweißt UND auch NICHT mit WIG sondern immer Autogen.
Das was dieser Herr da im Video macht ist total falsch. Das hält auch bloß von morgens bis mittags.
@@Nordmanntanne96 Da hast du recht, Ahnung vom Gussschweißen habe ich nicht wirklich, habe ich erst ein Mal gemacht. Aber Do it yourself finde ich immer gut. Danke für die ausgiebige Info, denn das mit dem Glühen wusste ich gar nicht 😊👍
Hey that’s a nice jacket dude, l would totally use it to ride my bike... (which l don’t have) 😰🤷🏽♂️ 🏍
Ur work is undefeated , where is the Ur hand gloves
Interesting and cool. Im sure no problem, like the man said another 1000 hrs replace, its not like a motorcycle piston, that is aluminum or zinc, that's iron, more forgiving.
Перегрев + молоток = привет эллипс и задиры
этому двигателю все равно, это двухтактный полудизельный одноцилиндровый мотор в 10л объемом ,работающий на сырой нефти , максимум оборотов 500 в минуту
Holly bonkers, that's one massive piston.
That is what she said.
+Mno good fusion between metal ( durty job)
...and a looong stroke, too!
Great job! Keep up the good work
Bro what the hell man i though you have sleeping effects
He should have warned me to put on my welding goggles - now I see spots where there are none!
Hope that piece wont fell off
I am not a welder, but wouldn't it be better to heat the Piston with charcoal before welding to avoid embrittlement of the HAZ?
Drill the crack ends to stop it creeping?
Silicone bronze? Preheat, Post heat?
Silicone?
Этот поршень уже видел свет в конце тоннеля .... Но его вернули в эту жестокую реальность .
От чего этот поршень
@@BigBoss-em3bz ну возьми и загугли Lanz Bulldog, древний трактор с одноцилиндровым двухтактным нефтяным двигателем, также керосиновый двигатель, двигатель с калильной головкой, калоризаторный двигатель, полудизель
Температурная жесткость всеравно влияет на месту сварки.будет отхождение, дольго не держить.это точно.
@@user-mo5vn7jv1i Верное замечание , но , видимо , это делается больше для демонстрации возможности ремонта и вряд-ли этот поршень будет установлен на рабочий двигатель . Хотя , чем черт не шутит ...
That piston has seen a lot of work
very nice video. it would be great if you could show us actual torch work with covering camera lens with protective glass...
It also would be great for the camera.... :P
benny hill style hammering
Good in my book! Will last another 100 years, easy...
Just like how I would've done it, awesome work.
Yeah, great job. God help people who go near anything you weld...
So manny questions could be asked
Would you heat the piston to 400'F before welding it and heat afterwards?
I dont know if he did preheat, but he didnt do post-weld cooling procedure....he stopped welding and then started grinding right away...And people there say, we are haters who say fancy shit
To answer the question.. YES! To minimize problems due to stress you must A Pre-Heat over hours, do the repair and then Re-Heat it up to say five hundred hold that for a few hours an then Reduce the temp fifty degrees per hr till you can remove it by hand. It’s little over kill maybe, but it’s always worked for me and my
Grandad he was an old school Blacksmith coke forge anvil the works. I was in the Seabees for twenty Five years, you hang around Battalions, CBU’s, and NCTC’s long enough you learn just about everything you need. ChiefD
10.3 litres and 55 horsepower. Bet it could last another 75 years
Death march is very apt...
This is the real world repair of an obsolete part....
Great job in saving that part that is now probably irreplaceable but one thing i wanted to say is not to have a cigarette lighter near your welding work why your welding its downright dangerous and i have heard of a welder that was killed from a cigarette lighter exploding in his front shirt pocket after a hot weld specksle had landed on it pleased "BE WARNED" accidents have happened otherwise keep up the great effort of keeping those old tractors alive and they will still be going well and truly after all todays new junk will be on the scrapheap.
So ein Teil kalt schweißen ist trotz Abhämmern Murks, und dann die Naht Einschlüsse!
+Faktor Fred und auch noch ohne vorher den Bereich zu schleifen.(Schweißnahtvorbereitung )
Anfänger ! ! !
I am wondering what filler material did you use?? Thank you Kevin
Why the death march music for such a life giving experience?
Well done!
Very well repaired
I'm sure you know what your doing, but I thought you would have warmed the piston in an oven before welding...
Nice work.
Appears no preheat and die grind shaping radices looks like a nickel base filler rod good AC I hope no die grind after passes it's a must to do check temp 450° or so finish grind fill any perocity put back in Kool down oven .Then hope!.
cast iron piston? thats one heavy piston. wonder if Mahle has made a aluminum piston in stock for these ;)
but can you do it with Elektrodenschweissgerät ? 😂
i didn't realize that the bulldog had a two cycle engine. from that piston it look like it
I love that jacket
I hope he cleans off the grinding dust before installing
Doubt it, with the hack up job he did at welding it
Should have drilled out the end of crack first. This is TIG brazing not welding. He used a bronze rod because it has give while the cast iron does not. This prevents the cast iron from cracking again. No if he used a nickel rod it would of been welding. Nickel also does what bronze does, has give to prevent the cast iron from cracking.
I'm curious too. So no end of crack drilling. Brazing cast iron which you can do. But how is that low melting point bronze going to hold up to the high heat in the cylinder with at least 23 to 1 compression? That is what I am curious about. Not the craftsmanship.
That piston is massive!
F- No preheat, no holes drilled at the ends of the crack, porosity galore, god knows how many inclusions, and no slow cooling afterwards. That thing will grenade in short order lol.
And that weld will has the same thermal expand index as the piston?
No but it's that or nothing when those pistons arent made anymore
Schaumschweißung. Schön viele Poren.
A bit of pre-heat wouldn't have gone amiss surely.
Made a huge mistake though. He never drilled holes at either end of the crack. More than likely it will crack in the same spot and even longer
?
@@mihailpetrovici5044 when repairing a crack you always find both ends of the crack and drill holes. It's harder to crack the radius of the hole than just leaving it unattended and less likely to crack back out when doing the welding process from the heating and shrinking when being welded and run in the engine.
@@MrTrevtrev198 I know about that. With the ? I was reffering to ,,why the fuck you give advice to this experienced man?"
@@mihailpetrovici5044 well because he is doing it wrong? are you ok
Fakt dobrá práce !
Похож на старика еврея из ходоссервиса .
Так вот как они движки ремонтируют
Nice work Do You use stainless welding material and how many AMP do you have on the TIG welder👍
Моё мнение,что у поршня свойство металла крепче,чем у привариваемой аллюминиевой проволки и шов со временем треснет! Проще новый поставить-на нём выработка есть ещё....
Плохо вы знакомы с теорией сварки, существуют швы, в несколько раз прочнее самого ремонтируемого изделия, тут скорее вопрос в другом, в какой среде проводилась сварка и при помощи каких присадок, в данном случае тиг с омедненным прутком, учитывая геометрию поршня и состояние на момент ремонта, то скажем трещина образовалась от перегрева и детонации, основная юбка осталось целой, во время проходов, он делал конусные швы, тем самым "кернил" шов, выскачить условно не должен, далее граница швов, вот тут сомнительно, зачищать почему то не стал и обезжиривать тоже.. А как же оксидная плёнка? Проще говоря и так сойдёт))) я такое встречал.. Ну так себе занятие, всё это не надолго, при не соблюдении вышеизложенного
what's the purpose of the weird shaped top of the cylinder?
Gute Arbeit!!