What are the hazards of galvanizing to the human body?

Some metal surfaces are electroplated by machine tapping. And play the role of anti-corrosion and anti-rust. What people call lead poisoning in daily life, zinc is essentially an element that is beneficial to the human body.

People often say calcium, iron, zinc, selenium, vitamins. In this regard, galvanizing only talks about the working environment of factory production and processing, long-term contact, and frequent contact. Harm to the human body refers to:

Respiratory olfactory aspects. It is common to feel that the nose has lost its sense of smell. Some people mistakenly think it's rhinitis.

is wrong. Rhinitis is both dusty and pollen allergies.

A common symptom caused by zinc heavy metal poisoning. Dry cough, chest tightness. I often feel thirsty.

Galvanizing plant is harmful to the human body.

Electroplating is harmful to the human body, using a large number of toxic and harmful materials, such as hydrochloric acid, sulfuric acid, nitric acid.

Phosphoric acid inhales large amounts of chromic acid.

Gas can also cause damage to human organs, and even cancerous galvanization is harmful to the human body, so it is recommended not to work like this for a long time.

It is easy to cause respiratory tract.

Damaged, often working inside the nose with a reduced sense of smell, prone to heavy metal poisoning. It is recommended that you take precautions. Galvanizing is extremely harmful to the body, zinc is a toxic substance, toxic material, is a chemical material, these chemical materials to the human body, all aspects of the human body, have toxin damage.

The harm of galvanizing to the human body.

In the plating tank filled with galvanized liquid, the parts to be plated after cleaning and special pretreatment are used as cathodes, and the anodes are made of coated metal, and the two electrodes are connected with the positive and negative electrodes of the DC power supply respectively. Galvanizing solution consists of an aqueous solution containing metal-coated compounds, conductive salts, buffers, pH adjusters, additives, etc.

After energizing, the metal ions in the galvanizing solution are in the potential difference.

under the action of moving to the cathode to form a coating. The metal of the anode forms metal ions into the galvanizing solution to maintain the concentration of the metal ions being plated.

The galvanized metal surface is non-toxicHowever, the raw material cyanide used in the process of galvanizing is highly toxic and seriously polluting the environment, and in recent years, it has tended to use low-cyanide, micro-cyanide, and cyanide-free galvanizing solutions.

Galvanizing is a surface treatment technology that coats a layer of zinc on the surface of metals, alloys or other materials to play a role in aesthetics and rust prevention. With the development of galvanizing process and the adoption of high-performance galvanizing brightener, galvanizing has moved from a simple protective purpose to a protective-decorative application.

There are two types of galvanizing solutions: cyanide plating solution and cyanide-free plating solution. Cyanide plating solutions are divided into microcyanide, low cyanide, medium cyanide, and high cyanide. Cyanide-free baths include alkaline zincate baths, ammonium salt baths, sulfate baths and ammonia-free chloride baths.

The cyanide galvanizing solution has good uniform plating ability, and the obtained coating is smooth and fine, which has been used for a long time in production.

In the actual production process, the common factors that affect the speed and quality of galvanizing are:

1. The pre-treatment is not thorough. There is an oxide film on the surface of the workpiece, which affects the normal deposition of zinc.

2. Poor electrical conductivity. The current is dissipated on the wire and the current distributed to the surface of the workpiece is too small.

3. The workpiece has high carbon content. High-carbon steel, iron castings, etc. will reduce the hydrogen precipitation potential, accelerate hydrogen evolution on the surface of the workpiece, and reduce the current efficiency.

4. The workpiece is too tightly tied. During galvanizing, the workpiece is partially shielded, resulting in a thin coating.

5. The temperature of the plating solution is low. When the temperature of the plating solution is low, the current density of the distribution decreases correspondingly, and the deposition rate of the plating layer inevitably decreases.

6. The sodium hydroxide content in the plating solution is high. When the sodium hydroxide content is high, the current efficiency decreases accordingly.

7. The content of additives in the plating solution is low. The low content of additives will affect the dispersion ability, and the coating will appear too thin locally.

8. The area of the plated parts is estimated to be insufficient, and the current density distributed during plating is too small.

9. The workpiece suspension method is improper, and the distance between the workpiece and the zinc anode is too large, and the position should be adjusted.

10. The workpiece is overcorroded. Reducing the precipitation potential of hydrogen reduces the efficiency of hydrogen evolution on the surface of the workpiece, which affects the deposition rate of zinc. An appropriate amount of corrosion inhibitor should be added to the pickling solution, and the local oxide scale is too thick to be removed by mechanical method, and more inspections should be made during the pickling process.

Metal galvanized:It plays the role of beauty, rust prevention and so on

Galvanizing refers to the surface treatment technology of coating a layer of zinc on the surface of metal, alloy or other materials to play a role in aesthetics and rust prevention. The main method used is hot-dip galvanizing.

Zinc is easily soluble in acids and alkalis, so it is called an amphoteric metal. Zinc is almost unchanged in dry air. In moist air, a dense basic zinc carbonate film is formed on the zinc surface.

In sulfur dioxide, hydrogen sulfide and marine atmosphere, zinc corrosion resistance is poor, especially in high temperature and high humidity atmosphere containing organic acid, zinc coating is easy to be corroded.

Classification: 1. Electrogalvanizing.

Usually the thickness of the electro-galvanized layer is 5 15 m, while the hot-dip galvanized layer is generally more than 35 m, or even up to 200 m.

2. Hot-dip galvanizing.

Long-lasting and anti-corrosion, the standard quality of hot-dip galvanized anti-rust thickness makes it have excellent durability; The toughness of the plating is strong, and the hot-dip galvanized layer forms a unique smelted metal structure that can withstand mechanical damage during transportation and use.

3. Cold galvanizing.

It has good environmental performance. Most of the solvents and diluents of cold galvanizing do not contain toxic organic solvents, and the cold galvanizing process also reduces the volatilization of organic solvents, reduces drying energy consumption, and is conducive to environmental protection.

Reactivity is galvanized on the surface of the metal after zinc, such as iron, and when electrochemical corrosion occurs, it is the more active zinc that is corroded first, not iron. In addition, because the oxide of zinc is denser, it protects the inner metal from oxidation.

Protect the metal from oxidation and corrosion, such as the galvanizing of the iron sheet of the classroom door, is to protect the iron inside from corrosion.

Anti-corrosion, anti-rust, plus beautiful.

Overall, there is a little, but it does not affect. Now it is plated with environmentally friendly zinc, and the harm to the human body is negligible. It's like the secondary shooting hazard of a mobile phone to the human body. Please don't worry too much.

There is harm, there is harm, this kind of thing, after he has more electricity, he will volatilize, and then after the geographical reaction, it will become small particles, and after being sucked in, it will hurt a lot.

Of course, electrogalvanizing work is harmful to the body, because when the electrogalvanizing princess is working, it will produce some smoke, so only smoke is actually harmful to the body.

It is generally easy to cause respiratory tract damage and decreased sense of smell. It is easy to be poisoned for a long time, and it is recommended not to work for more than five years, which will be harmful to the body.

Electrogalvanizing work is harmful to the body.

Because in the process of electroplating operation, it is necessary to come into contact with a variety of harmful gases and chemicals such as hydrochloric acid and sulfuric acid, etc., if there is no good labor protection, it is easy to bring occupational hazards to the operators, so we must strictly implement labor protection measures, implement various safety rules and regulations, and regularly arrange employees to the health and epidemic prevention department for health examinations.

The traditional electroplating process production will be harmful to the body, the medicine used in the electroplating process will produce a pungent smell when heated, with the improvement of the production process and the improvement of the potion, the smell is much smaller than the previous electroplating work. It can be in the electroplating plant of that kind of automated production equipment, which has no smell. Electroplating itself is a kind of surface treatment process, due to the particularity of the material, a large number of potions need to be used in the production process, resulting in some pungent odors, which is harmful to the body for a long time, and the conditional electroplating enterprises can improve the production process or equipment to maintain good ventilation in the workshop.

It is true that there will be physical injury, if you are exposed to this environment for a long time, it may cause some adverse reactions, but if we can pay attention to the protective measures, it is recommended to avoid repeated contact, or direct contact, which can avoid physical injury, if there is no protective contact for a long time, it may affect the health of the body, it is best to get out of this environment.

In the electroplating production, a large number of chemical drugs such as strong acids, strong alkalis, salts and organic solvents should be used, and a large number of toxic and harmful gases will be emitted during the operation. On the other hand, the working space of the electroplating workshop is damp, and the equipment is susceptible to corrosion, which can also easily lead to electric shock accidents.