Hot Dip Galvanizing- Dipping Process....... in action
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- Опубліковано 26 жов 2016
- Watch the actual dipping process in Hot Dip Galvanizing.
The formation of galvanized coating on the steel surface is process of metalurgically bonding of iron and zinc during this hot dipping process. Thereby forming zinc-iron alloy layer protecting the steel from corrossion.
This is another great vlog about another technique, WITHOUT MUSIC! Thanks for posting and sharing!
Antonmursid🙏🙏🙏🙏🙏🇮🇩🇮🇩🇮🇩🇮🇩🇮🇩
I've been doing this for the last year and even though I've already seen a couple big explosions due to missing vent holes, this whole process is fun to me. It's like an art making the steel look as good as possible. I always joke with my manager "Hey how much more is chrome than galvanizing? Our customer might not pay for this if chroming is more costly". I can suggest as well, maybe bringing the racks up a little slower.. It gives more time for the zinc to run and you won't have heavy lips or nearly as many drips in the end. Love seeing other shops setups.
Chrome plating is inferior to galv for corrosion protection, even though it looks pretty. As soon as any water and oxygen gets underneath, the chrome bubbles because it's only a barrier. Galv protects steel electrochemically and alloys at the surface so it won't peel off.
true, galvanizing is an art and it involves a lot of skills and strategies especially on challenging multi dimensional item
It depresses me about place ha
Could you please tell me what was the solution that the pipes were dipped in after zinc bath?
Thank you very much sir for uploading this video .My teacher suggested me your video . THANKS TO BOTH OF YOU .LOVE FROM BANGLADESH.
@@tabassum9209 yes. but who are you?
This is the best quality I’ve seen
HDG Works!
I have just witnessed extraction of a Galvanized Helical Pier that was placed in-ground to a depth of 33'Ft. 28 years ago.
So after a quick rinse with the hose, the pile looks as the day it was installed. Pretty amazing!
the benefit of HDG
❤ so zS, we ²@@boyetlucas2466zZzz😂wxz3 and add z
I work maintenance in a galvanizing factory its a really cool process.
I just got hired at the galvanizing facility here in Washington. Saw then most the material to be lowered into the kiln and then the tour proceeded 😐😐 Cool to see what I missed in person. Can't wait to get my hands dirty in the business.
Brandon Atkinson how is it so far? Any 3rd degree burns as of yet
Mən də Azərbaycanda - Bakıda qaynar sinkləmə zavodunda texnoloq işləyirəm. Çox maraqlı prosesdir!
Damn you lads are some kings. I only electroplate zinc, and the 200 degree dryers i work next to make me sweat bullets enough. big ups
Awesome dtuff. I seen a similar place In Taunton Massachusetts. Impressive.
You SAW a similar place
You didn't seen't it
That's an involved process that should be explained to the viewer. Just a thought for those of us who aren't enraptured by shinny pieces of metal.
it s an easy procedure i can explain to you.
For burners what you suggest which is better either c9 or gas
Thanks for uploading such a knowledgeable video...
Thank you.
thank you for watching
what percentage of metals lik zinc, aluminium and lead does bath contains?
What a process fun watching this stuff
thank you. Though the comments here made us do some more improvements
Is it a type of thermal spray coating?
I worked in hanjin 2 yrs in galva
Good work
👌good working
I built a pedestrian overpass bridge and had this done to all of the parts.
Thanks for that information, the great gatsby
Wow that very dangerous & very interesting
Wow so cool!!
Not cool to Hot 460°c temp of this zincbath
_Couple questions. Has the crane or wires ever failed above the molten metal?_
_What is the brown bath following the galvanic dip? Thanks!_
1. The crane has wires, but the heat dont demage the wires.
2. The brown stuff is ash, from the ammonium-zinc chloride, that burns in contact with the zinc.
Sink vannasından sonrakı qəhvəyi məhlul - Na2Cr2O7 duzunun zəif məhluludur. Həm soyutma, həm də sink örtüyünün passivasiyası üçün nəzərdə tutulmuşdur. Azərbaycandan salamlar!
@@hannesbarfu7295 you mean quench?
I work at a Valmont galvanizing plant in Alabama and it's not uncommon to see a pole or product fall off the wire into the kettle or chemical bath tanks. We have an extraction process using long chains that generally takes 10-20 minutes whenever that does happen. I've never seen anyone get hurt from it.
may i know what type of material u use to remove the ash from the upper bath?the one which follow the galvanized item?aluminium?ss? or just normal mild steel?
just normal MS
normal mild steel scrapper will do
INCREDIBLE!!!
Gayet başarılı ve farklı bir tarz 👏👏👏
So I bought some to spray on the inside of an old galvanized trashcan what do you suggest i spray in it for drinks that wont hurt us
a trashcan im sure has a thin galvanized coating any spray will not provide any longer lasting benefit on the surface of the can
Amazed at all the different variations on comments of the way it’s done.
This oven system uses oil transfer heating using electricity or a steam boiler?
We use lpg and automotive diesel for heating
An explanation of the process anf what was going on would make this clip a lot more meaningful.
This is what we use for
Our push piers for my company. This steel is used to
Ships!
First dip after zinc: Is that just cooling or is it passivation? Looks just like chromic acid.
Passivation tank, incidentally, this is the second kettle wherein the only space we can put it is after the passivation tank. Due to limited space thats why its there. ALthough a process with one step back.
Kaun sa jagah hai
Question, are zinc fumes created in the process? I work in a galvanizing facility and was wondering if breathing protection should be used around the pot.
I think you have to inhale a lot of one time. But milk will help if you feel sick from it
Yes you should be wearing a respirator
I dip the products at a Valmont kettle and it all depends on which side of the kettle the smoke is blowing. The smoke at my kettle rises straight up, but breathing in a shit ton of it at one time might hurt you. Other than that it's not that bad. Just let the product cook off and by the time the sweepers walk out to sweep the ash back most of the smoke is already gone
Never thought I'd see "inhaling metal vapors" and "it's not that bad" in the same sentence, but here we are
@@hadlock
Lol 😂
Mind if I asked what you guys used for rigging? Looks like hooks.
hooks and annealed wires depending on the items sir
Nice shining in the Product, what does the Metal consist of, apart from Zinc??
Zinc and nickel if I remember correctly
Yes, primarily special high grade zinc. With infusion of right amount of nickel and zinc aluminium alloy
Thanks, few more info, please.
1. Do you add Nicket in Pure form, as the Melting point is high? If no then how you add Nickel & what is the Percentage of n=Nickel you Maintain in Liquid.
2. What is the Percentage of Aluminium in Liquid you maintain?
@@rajibchatterjee3031 nickel powder needs an injector to infuse it to the kettle but wtih downtime. Another option we use is Nickel alloy. The percentage of Ni. ideally at .055% and Alum. at .002%
What is the bath after the hot zinc tank? A cooling rinse or passivating bath?
It’s a chemical coating to stop white rust
It does both. The passivating is mild.
Nice
It's weird the differences in how the process is done although the process yields the same result. The kettle I work on is its own structure and the cranes ride an oval rail setup. The top of the kettle closes the side doors close, the end doors close. Wish they were able to keep it recording for the actual dipping. The popping and exploding of cold steel against that hot zinc is pretty entertaining lol and for those wondering, the zinc is about 830-850°F.
this is the old design wherein there was no fume capboard then. We have to improvised the fume collector on a plant with horizontal design. its a plant 2003. But our totally new plant has vertical design and permanent fume capboard as you were saying.
Перед цинкованием детали ведь сушатся... И они при этом нагревается. Значить вы недостаточно сушили стальные детали... Гоняясь за количеством, вы теряете в качестве...
I have some question regarding your processes. Do you hang the poles on the beam starting from pre treatment? If so, how do you transport the beams back to the start of the processes?
there are poles that can be hang on a jig but the bigger ones are jigged seperately and tied both ends because the beam jig is small. For bigger heavier ones, we use chain
@@philgalvindustrial9381 هل لديك فكرة على العمل فيها انا اشتغلت مدة 15,سنة في مثلها في المغرب وقفات الشركة وانا ابعث عن عمل خارج المغرب
At our plant (Valmont) we rig the product onto crane jigs with either wire or chains and from there it goes to a caustic bath, acid bath, flux bath, and then to the kettle. After the product is extracted from the kettle the jigs get placed on top of a transfer cart which transfer the product to the final inspection department dress/inspect the product. After the product is approved a "Combi-Lift" moves the product to shipping and receiving.
wow beautiful and shiny
What makes it stick? And can you dip things in tin? I wish it would stay that shiny. And what makes The crystals big or small?
Metallurgical bond which forms between Fe-Zn, through the electrochemical process.
In hot dip galvanising you dip the item to be galvanised into a flux tank before putting into the galvanising pot. That makes the zinc stick to the metal.
best video！
Question to the experts! Whats happen when hit dip galvanize parts which are already hot dip galvanized??
2nd Qestion. My client requesting to confirm min 100um HDG thickness. (100um min, doestn matter the sheet thickness). Is his request legit??
WHen you dip again a galvanized product, you either strip off the original coating until the bare steel appears or if you just dip it without strippinng off, it will be very rough. We discourage regalva because if it is stripped off, the acid fumes will be thick
THe zinc coating thickness cannot just be dictated arbitrarily. The ASTM A-123 (2015) or any related BS?JS/ASNZ standards should be the guide for the zinc coating minimum thickness compliance. It will be impossible for a sheet to have 100u coating thickness. Use the International Standard in matter of min. zinc coating thickness compliance
Nice PPE guys!
what country is this?
@Norm T "He who thinks safety is expensive should try an accident"
@Norm T ppe is not just safety shoes and reflective vest. I can think of something more here such as face shield, respirator, gloves and coverall. Most importantly, remember ppe is the last defence.
@@abdulwahabkhan4675 The zinc is at 834 degrees and when it's 100 degrees outside it's 120 inside. who wants to wear coveralls? When you do this job the motto is "learned to get burned"!!!!
Philippines sir
Where from?
I wonder if it would be a good idea to dip a vehicle frame.
Yes indeed, companies do that, they do hot dip galvanization to give best results and corrosion protection to vehicle chasis. It can protect your vehicle chasis from rust / corrosion for a long time.
What is the maximum coating in microns that can be achieved on steel tubes as thick as 3 mm ?
65mi
What is the cost per kG for mild steel and what should be the minimum production for 6mtrs tank
22rs /kg 100 mt Daily
The first step is to submerge the iron parts into the molten zinc, what is the temperature of the hot zinc? The second step is to put the galvanized parts into the cold water? Is it to just cool down?
First step is to prepare the steel to be galvanized.. check for holes or gaps as needed then we do degreasing, acid pickling and fluxing
@@junlucas1216 and drying
We send pipes for galvaniaztion in Cavite. Now the flange seration of the pipes was covered with galvanized. HOW TO REMOVE THE GALVANIZED ON THE SERATION?
Retapping sir and thread allowance to allow zinc coating to dry on threaded surface
Its hazardous waste..very difficult to work with..but hardwork pays
Thought that fumes from molten zink are kind of toxic?
its better to be safe and wear mask and protective face cover
Are car body parts also galvanized the same way ??
No, car body parts are usually electro-galvanized or galvannealed (often stamped from such a processed sheet) and then covered in a phosphate conversion coating and paints. The entire process is water-based and allows entire assemblies to be dipped into tanks and get any complex geometries that a hot-dip process would struggle to deal with.
What is the one thing keeping the entire industry from switching to Zn-Mg-Al ternary baths? The galvanic protection offered by those are up to a few hundred times greater than normal hot dip Zn.
Go on then, what is the one thing? My guess is money.
donde es esta planta
When we can dipping iron in zinc molten ??
Yep, that's galvanising.
At one of the valmont plants someone was in a kettle explosion that guy lost his leg and over 90% of his body was burned he survived but the only thing that saved him was his face shield
District of Baroda in Gujarat, India has the most galvanizing plants, 26 HDG Plants within a Radius of 30 kms, Bath Length ranging from 10 mtrs to 2 mtrs
Yep,and we pay carbon taxes as the rest of the world pollutes with no consequences.
@@moultonditcher6187 with all this you are still the leading polluters in the world.
I personally would recommend them to galvanize the beam that the crane holds ;-)
Sometimes our clients doesnt want chain marks thats why we have to use the wires.
thanks,
He probably used Google translate
Gil Fischer
You are right it looks ugly
lol!!!
Gil Fischer.....WOW PEOPLE ARE TAKING YOUR COMMENT A LITTLE TOO SERIOUS. I LAUGHED AT THE COMMENT YOU POSTED
After completing galvanising on pole zink line produced how it avoid
#HeyDharMannFam !
Does anyone know any forum of galvanizers? I have recently started working at such Plant but still face some problems while making a desicion at certain points. I need suggestion from an experienced people. I'm ready to share with my experience as well!
you can try finishing.com. People there are very quick to response and are very experienced
email us , we try to help sales@philgalv.com
اريد عمل مصنع للجلفنه
We used to have all this shit here in America. The environmentalist made it prohibitive with regulations so the crony capitalists took advantage of that and had all this shit shipped overseas.
About the only thing we make here in America is food that makes you fat.
food that makes you fat and sick.
What protectsThe zinc from the atmosohere
Flux of ammonium chloride
Hi,
Looking help from experienced people in Hot galvanise
We have started Hot Galvanise process in San Luis Potosi, Mexico and are having many troubles in getting the perfect final product. sometimes either zinc is getting burnt or sometimes the finishing is not coming properly. We know that we are missing many things to make it work.
Is any there anyone who could help us with this? Help will be much appreciated!
Hey .
I can help
Any news ?
@@jbiloajbiloa your email or Whatsapp?
What was the second dip, hexavalent chrome?
Lhong Kho typically it’s a sodium dichromate “quench” mostly used for cooling
mm hexa chrome is prohibed now, yeah there are some who use trivalent chrome as final step, or just water
Oil dipping
Wot is the orange liquid in the second dip?
@Fred-fen Spinerir Thx
you'd think they might spare a bit on their own equipment
no safety catches on crane hooks?
What it is raw material..? Tin SN or zinc alloy?
Usually pure zinc. Also done with aluminium added for better properties in some cases like roofing sheets.
SPecial high grade zinc 99.99%
Imagine one of those wires bracking and a pole falls into the galv and it spalshes onto the poor workers, crazy crazy saftey issues here!!
Well.. you'll got yourself a rust proof armor
@@zeezeazee omw to apply for a job in galvanizing plant
We opened the fume en splatter board for video purposes only.. which slides during galvanizing
Normally it is enclosed to avoid splattering workers.. no workers within 15mtrs of the galva tank during galva
good system
How much zinc is used in 1 kg of metal?
Around 4-6 percent
Depending on the reaction of the steel. Usually 3-6% of the steel’s wt..
Yeah health and safety what about splash from zinc if. A piece of steel falls off or the crane brake fails
In our 25yrs in the industry we never encountered such a problem, double checking during jigging is the key
Second check of jigs are done after acid pickling and before galvanizing itself
This is just to show dipping en pullout of items for video
Usually the fume/splatter capture board is enclosed.. so no workers are near the galvanizing tank during dipping
azz galvanizing Beaumont tx here
Terrance Guillory they have the best loads (I'm a trucker)
Philippines is the location of this plant
Kennedale
Metal Plate Galvanizing Louisiana here
Indiana galvanizing Middlebury
How often do you folks have problems with stickers or paint being left on the steel? It isn't much of an issue with our plant, but sometimes I still grind off those leftovers. If you've got no issue at all, please indulge me lol
chalumeau pas d autre solution
Everyday almost 20% of all stell deliveries with markings stickers and paints
I grind off the stickers and lettering that doesn't come off in the acid when I inspect the product before I dip it in the kettle and it normally comes out fine. If I miss a spot we have a metalizer guy that dresses it before it's shipped
ola sou brasileiro e zincador profissional com a estrutura certa vocês podem dobra a produtividade
ZhongyunTech Double wall corrugated pipe machine
flange side would be more important to not have bumps or drips, who's gonna see a drip at the top of a 20 foot poll, but the guy installing those is gonna notice a his flange not sitting level, flip the angle
gravity, mate. no matter how it's hung, it's gonna have a titty on the base.
@@KeoN710 if they flipped it, the bottom of the flang would be a smoother finish, yes there will still be some build up and drips near the edges but on no critical surfaces, with a flip it can be can be cleaned up with a hammer, nothing to grind that way
@@Kyle_Harding Bro i'm a crane operator at the kettle, trust me.
@@KeoN710guy I've poured maple syrup on my pancakes once or twice, trust me, a flange doest help aunt jemima have less drips
If it was flipped it would have a few drips on the top edge of the flange, but it would be much better then a large build up of zinc on the bottom mounting surface, this way it would need to be ground back to being flat.
Thx
Wow
nice！
How many ° (Degree) Zink 🔥 heat
419.5 is the melting point in celsius
Good job this location is in BEKASI..Indonesia
Valenzuela City, Philippines
pinas pala to, minimum lang ba sahod ng ganyang trabaho?
Salah mba..
So why is welding galvanized so dangerous? I thought theyd be wearing respirators and such!
Antiquated equipment, slow processes. Are they making any money?
wait until you see my new plant this year. it is doing good , at the end of the day, its the quality that counts and the bottomline is good too
Can someone explain what they are doing with the poles at 6:15?
They're removing the excessive zinc which forms on bottom edges of the hanged elements. It's much easier to do it while it's still hot and fresh out of the dip, than afterwards when it solidifies (might rupture the coating around it when trying to remove it).
What are the components of galvanizing
zinc
Why would you skip over the ACTUAL DIPPING part?
Missed the explosive sounds dropping into dip
I wanted to see this as well. My brother told me this story he was told, where they'd drop the metal parts in quickly when they had visitors just because it was impressive.
@@jonwelch564 we cant do that tho. Would blow of the whole company with our material and bath sizes
Not a respirator in sight. RIP workers
Missed the acid bath first to clean them.
they were sand blasted bro so don't need to go in acid only the flux
So you don't use EPP for the toxins
Brothers give me location
niec
Just as long as the process is not done in China.
They do not do the quality of plating US companies do.
The coating the Chinese use on the inside of galvanized pipe wears off quick, 2 years from domestic water and as well as inside when used outside for gas piping, the coating flakes and gets into gas regulators, gas valves, orfices etc.
The Chinese pipe is usually sold at box stores.
@TheSushiraw than why so many other countries copy our engineering?
Lol. Lol. Lol. Lol. Lol. Lol. Lp
Lol.
China sure does not engineer ANYTHING. LOL LOL.
If you call copying something engineering?
@TheSushiraw than why to our country for school?
Stay home
@TheSushiraw wasnt aware other countries were civilised yet?
Must have stold our engineering and ideas
@TheSushiraw the only engineering China has done is cv-19 and chicken fried rice with egg roll
if am not wrong in hot dip galvanizing process the entire metal has to dip in one go not like up and down coz It might get crumble on the long type metals due to hot dip in one side and cold on the other side
It depends on the part. Some parts like handrails you have to stop occasionally while going down with them otherwise air builds up too fast and they float. Then they REALLY look bad. But on the way up its much preferred to do it without stopping. Otherwise you get those horrid flaky lines across the parts.
Qual contato de vcs
Should have provided more information.
...Looks hot...what is that 150-160 degrees....!!
its usually around 350 degrees
420
That was a joke...more like 449C....840F...
450 °C
425-430 C as per text book😃