Is dusting harmful to human body? Price description

Powder spraying is an operation process of spraying powder coating on the surface of workpiece with professional spraying equipment, such as electrostatic plastic spraying machine. Because of their advanced technology, they can make the paint on the surface of instruments or accessories spray evenly, achieving advantages and characteristics that ordinary traditional processes cannot guarantee. We can also know that powder spraying is different from ordinary painting process and has better effect. For example, good anti-corrosion and anti-aging technology and strong adhesion, on the one hand, make its cost lower, on the other hand, can achieve satisfactory results.

First, the price of powder spraying

1, price: ￥27.00/ bag

Powder spraying 304/3 16 stainless steel powder electrostatic spraying low oxygen factory direct powder spraying.

Manufacturer: Shandong LinkedIn New Material Technology Co., Ltd.

2. Price: ￥ 17.00 Yuan/kg

Meilijia brand Meilijia can spray putty powder

Manufacturer: Meilijia Building Materials (Beijing) Co., Ltd.

3. Price: ￥ 19.00/ box

Conductive paint patent formula anti-electromagnetic interference conductive paint conductive powder spraying processing in Shenzhen factory

Manufacturer: Shenzhen Xiate Technology Co., Ltd.

Plastic spraying, also known as electrostatic powder spraying, uses an electrostatic generator to charge plastic powder, adsorb it on the surface of iron plate, and then bake it at 180 ~ 220℃ to melt the powder and attach it to the metal surface. Plastic-sprayed products are mostly used in indoor boxes, and the paint film has a flat or matte effect.

3. Is dusting harmful to human body?

It is very harmful to human body. Working in such an environment, inhaling dust for a long time will cause pneumoconiosis, and there will be health problems, such as zinc and sodium. The paint involved in spraying is very harmful to the metabolism of human brain cells.

Guiding opinions:

Work is to wear a gas mask, pay attention to the use of ventilation facilities and window ventilation, so that harmful substances can be discharged in time and not accumulated indoors. Reduce the stay time in the workshop.

Fourth, the working principle of powder spraying

When working, the spray gun, nozzle plate and nozzle cup are electrostatically sprayed. The coating particles are partially connected to the negative electrode, and the workpiece is connected to the positive electrode and grounded. Under the high voltage of high voltage power supply, an electrostatic field is formed between the end of the spray gun (or nozzle plate and nozzle cup) and the workpiece. The electric field force on paint particles is directly proportional to the voltage of electrostatic field and the charged amount of paint particles, but inversely proportional to the distance between the spray gun and the workpiece. When the voltage is high enough, an air ionization zone is formed near the end of the spray gun, and the air is heated by intense ionization, thus forming a dark red halo around the sharp edge of the spray gun or pole needle, which can be clearly seen in the dark. At this time, the air produces a strong corona discharge.

Film-forming substances in coatings, such as resins and pigments, are mostly composed of polymer organic compounds, mostly conductive dielectrics. Solvent-based coatings include organic solvents, cosolvents, curing agents, electrostatic diluents and other additives. Except benzene, xylene, solvent gasoline, etc. These solvent substances are mostly polar substances with low resistivity and certain conductivity, which can improve the charging performance of coatings.

The molecular structure of dielectric can be divided into polar molecules and nonpolar molecules. When subjected to an external electric field, the dielectric composed of polar molecules shows electrical characteristics; Dielectric composed of nonpolar molecules is good outside.

After the paint is atomized by the nozzle, it will be sprayed out. Atomized paint particles will be charged by contact when passing through the edge of the pole needle, nozzle plate and nozzle cup of the muzzle. When the gas ionization zone is generated by corona discharge, the surface charge density will increase again. Under the action of electrostatic field, these negatively charged coating particles move to the surface of the conductive workpiece and deposit on the surface of the workpiece to form a uniform coating film.

The powder spraying mentioned above is a new processing technology, which is mainly used in the manufacturing process of some mechanical equipment. Because they use powder and work through professional powder spraying equipment, on the one hand, they can make up for the defects of uneven spraying or high cost of traditional painting technology, on the other hand, they can make the powder on the surface of the instrument have strong adhesion and corrosion resistance, and will not be seriously damaged after long-term use. This will not greatly reduce the aesthetic degree of tools and instruments, but also help consumers achieve satisfactory results.