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High-Power Flame Spray Coating Equipment

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Standards:

Applications:

Directly applies various acid-, alkali-, and salt-resistant plastic coatings without the need for a heating or curing system. It is particularly suitable for large-area on-site flame spray coating applications. In terms of corrosion resistance, operating process, and working conditions, it can partially replace heavy-duty anti-corrosion coatings and fiberglass linings.

Product Information:

This equipment adopts a unique trolley-type stainless steel large-capacity powder feeder, which allows two spray guns to operate simultaneously.The powder feeding system features a cyclone fluidized bed combined with an adjustable Venturi powder injector and an additional powder-cleaning ejector, ensuring that no powder accumulates in the long hose between the feeder and the spray gun.As the powder feeder is non-pressurized, powder can be refilled without stopping the spray gun, guaranteeing continuous, stable, uniform, and long-duration spraying in all directions. The spray gun is designed with a special gas-mixing method and a double-layer shielding gas structure, effectively preventing flashback during the spraying process.The High-Power Flame Spray Coating Equipment is currently the only flame spray coating system in China capable of achieving the highest efficiency for large-area anti-corrosion field applications. It is widely suitable for on-site corrosion protection of chemical plants, large vessels, storage tanks, and oil & gas pipelines.

Configuration

The complete equipment consists of a control cabinet, flame spray gun, powder feeder, pipelines, and gas line regulating valves. The user needs to provide their own 0.9 m³/min air compressor, oxygen, acetylene gas, as well as oxygen-acetylene pressure reducers and pipelines.

Features

Plastic powder flame spraying, also known as flame spraying or flame powder coating, is mainly used for large-area on-site coating applications for anti-corrosion purposes. It is characterized by a relatively thick coating, simple application process, and lightweight, portable equipment that enables on-site construction.

Compared with electrostatic powder coating and fluidized bed coating, flame spraying offers the following advantages:

① Low equipment cost, with no need for a dedicated spray booth or curing oven.

② Lightweight and portable equipment allows on-site application, and spraying is not restricted by the size or shape of the workpiece.

③ Can be carried out under harsh environmental conditions such as 100% relative humidity and low temperatures.

④ The powder coating contains no solvents and requires no drying or curing time after spraying—ready for immediate use.

⑤ Applicable to various substrate materials, such as steel, concrete, etc.

⑥ The coating is repairable; small defects can be fixed by simply reheating the surface, while larger defects can be re-sprayed.

⑦ Easy powder and color change.

Spraying parameters

 

Item

Gas Pressure Parameters (MPa)

Plastic Powder Type

Recommended Preheating Temperature (°C)

Long-term Service Temperature (°C)

 

 

 

 

 

 

 

Gas Section

Acetylene working pressure(MPa)

 

 

0.10–0.12

High-density polyethylene (HDPE)

 

120–150

 

-70 to +60

Low-density polyethylene (LDPE)

 

150–200

 

-70 to +75

Oxygen working pressure(MPa)

 

0.50–0.60

Nylon 11

170–230

-50 to +80

Nylon 12

170–230

-50 to +80

Dry compressed air

0.40–0.60

Nylon 1010

210–250

-50 to +80

Nylon 66

250–270

-50 to +80

 

 

Spray distance (mm)

 

 

150–300

PE / PO / Cross-linked polyethylene

 

180–250

 

-14 to +120

Chlorinated polyether

170–230

-30 to +120

 

 

 

 

 

Powder section

 

Powder deposition rate (%)

(double protective gas)

 

 

 

85–95

Epoxy powder

150–200

80

Ethylene-acrylic acid copolymer (EAA)

Ethylene-vinyl acetate copolymer (EVA)

 

 

80–130

 

 

 

-45 to +70

Recommended powder particle size (mesh)

 

Thermoplastic powder: 80–140

 

Thermosetting powder: 100–140

FAQ

1. What is High-Power Flame Spray Coating Equipment?

It is a thermal spraying system that uses high-temperature flame to melt coating materials (such as powders or wires) and spray them onto a substrate surface to form a protective coating with high hardness, wear resistance, and corrosion resistance.

2. What is its working principle?

The equipment combusts fuel gas with oxygen to generate a high-temperature flame, which melts the coating material. Compressed air then accelerates and propels the molten particles onto the workpiece surface, where they rapidly solidify to form a dense coating layer.

3. What materials can it spray?

It can spray a variety of materials, including:

Metal powders (nickel, cobalt, aluminum alloys)

Ceramic powders (alumina, zirconia)

Carbide materials (tungsten carbide)

Composite coating materials

4. What are its main applications?

It is widely used in:

Aerospace components protection

Automotive engine parts

Mold and tooling surface reinforcement

Oil and gas equipment anti-corrosion

Marine and heavy machinery wear protection

5. What are the advantages of this equipment?

Key advantages include:

High bonding strength coating

Excellent wear and corrosion resistance

Suitable for large-area repair and coating

Cost-effective surface restoration solution

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