DIY Galvanizing Bath: Tub Material, Acid Choice, Transformer Specs, Voltage for 3x2x1m

Hello.
Recently, I have been thinking a lot about the galvanization of metal things, filter baskets to be exact.
I would like to make a home-made galvanizing bath.
Namely, I'm interested in how to go about it.
The question is whether the bathtub can be made of ordinary sheet metal or plastic? What acid should be in the bathtub for the electrolysis to take place?
What transformer power (with what current) should I use in a 3x2x1m tub?
Does the voltage value matter?
The previous design of the machine was successful and thank you all for helping with the previous design.
I would like to ask for your help in this project.
Regards.

If possible, do it with plastic, but you will have to use the second electrode.
Instead of acid, in my opinion, you should use a salt of the metal with which you are coating the element. So in your case, salt containing zinc.
And the value of the current is selected according to the surface of the element, probably 1A / 1dm ^ 2

Get the electroplating guide, there are various recipes for galvanizing baths, they also differ in what is the optimal current density and the quality of the coating obtained, some technologies (e.g. cyanide baths) are unavailable to amateurs, and they are said to give the best results. If you have little, it may be worth looking for the services of professionals.

Listen, the idea is to make a small factory galvanizing plant for your own products because it takes a long time to do it by the company and you have to drive a car and a maximum of 350 cars will be available on the car. With a larger order, if the customer is in a hurry, having 3 bathtubs at the time of processing. And I have such a question. How is it with the liquid with metal elements, is it disposable or what? I am very weak on this subject because I have never had contact with such a thing. You have to take a risk. Oh and one more thing. How long does such a galvanization last?
Regards

A bathtub made of plastic, but not softening above the bathtub, two rails to which you attach ANODE AND SECOND KATODE from the power supply - rectifier. To one rail you give a container with zinc balls in the other basket attached to the other rail, something that you galvanize. . I also assemble a small galvanizing plant, but with the difference - I have to get to all acid polishing solutions, etc. I am at the stage of assembling the rectifier - power supply. Apparently, the current, the less important, is important. Regards

Pawełek and how is the galvanizing plant?

I have some very effective cult lures that are gnawed by the tooth of time and water, so I would like to effectively protect them against corrosion and I just thought about a tiny galvanizing plant for home use because protecting such elements with varnishes does not work at all.

Very good idea

What are the best salts for galvanizing?

Look for the book "House Electroplating" Stefan Sękowski and start with it.

Thanks for the info. I have the entire collection of Sękowski from my childhood.

Galvanizing from Sękowski's books is ok if you want to do it as an experience. You will not get good quality coatings.
Alkaline and slightly acidic baths are the easiest to use. - they are most often used in industry.
For a simple home electroplating plant - I would suggest low-acid baths based on
- zinc chloride - bath conductivity
- potassium chloride - provides metal ions
- boric acid - is a pH buffer
- gloss additives - regulating depth and shine
they work at a pH of 4.5-6
But what about sewage? The element must be degreased and etched to make the surface chemically clean.

If you do it in the proverbial jar - it's ok

But if you are going to run an electroplating plant, I would start with sewage management.

The book is better: Galvanotechnics Guide

Regards
Barnabas

Passivation can also be added as a galvanizing stage. Leakage is the base fact, I have a problem with this conundrum

In general, I use mostostal but I thought that I could have a shine on my own. There, the weight is every 20 kg at receptions. This is a lid, I will get a galvanized 6.

It's a fact better by yourself Some plastic tank, solution a few balls of zinc in baskets with a stainless steel rectifier and only go with galvanization. Of course, etchants before galvanizing

Added after 1 [minutes]:

To degrease the material, I use acid diluted with water, and if it does not work, then ELECTROCHEMISTRY IN MOTION GOES

I zinc as below. Maybe someone will need it:
www.youtube.com/watch?v=7bnaXxt8J04

Added after 2 [minutes]:

If someone was looking for a homemade galvanizing method:

The first fundamental mistake. Copper cannot come into contact with the solution and here I see a copper hanger. The solution and zinc should be done professionally. But for the galvanization of hooks and keys, it will not work. And where is the brightener?

Where the Potassium chloride where the zinc chloride The basic ingredients, and this time is not compatible eh

The easiest way is to buy a ready-made bath, passivation, rinse aid, anodes, eg GALW IMP in Warsaw, for steel, brass, copper, DIAMOND, for ZnAl, alu a bath based on NaOH (you can do it yourself, steel can also be coated). Plastic bathtubs (e.g. building casters - they work great). Degreasing: 70-80 ° C, NaOH, 10%, as an electrode, an ordinary steel sheet (anode and cathode can be used), I recommend the same or higher current as for coating. Etching with HCl 10%, room temperature. Covering 2 to 6 A / dm2 of the coated material. Passivation 5 - 10 sec. Rinsing and drying. The coated details are better to move in the bath while coating. Cycle: degreasing (about 10 minutes), rinsing, etching (depending on the cleanliness of the detail a minute or longer, springs as soon as possible because they will hydrogenate), rinsing, coating, rinsing, passivation, rinsing, drying.

I forgot to add that due to the high conductivity of the bath, the coating voltage will be in the range of a few V max. parunastu V.

Homemade galvanization involves coating iron or steel with zinc to prevent rusting. Steps:
1. Clean metal surface thoroughly.
2. Prepare a zinc solution (zinc sulfate or chloride).
3. Dip or brush metal in solution.
4. Allow to dry and repeat if https://apkmodbit.com.
5. Zinc layer protects metal from corrosion.