Thermal Spray Coating Equipment Manufacturers

Thermal Spray Coating Process

A group of thermal spray coating equipment where the coating is placed on the processed substrate by utilizing a stream of particles, metallic or nonmetallic, which even more or less form platelets, called splats, with some of these splats forming the metalizing coating.

Types of Thermal Spray Coating Gun

There are several different processes used to apply a thermal spray coating-

• Wire Flame Spray- Wire flame spray process, the wire spray substance is dissolved in a gaseous oxygen-fuel flame. The combustible gas can be acetylene, propane, or hydrogen. The wire is fed concentrically within the flame, where it is dissolved and atomized by the addition of compressed air that also shows the melted substance towards the workpiece surface.
• Powder Flame Spray- The Powder Flame Spray coating process is based on the same operating system as the wire flame spray process, with the exception that the coating substance is a spray powder. Thus, a larger variety of spray materials is available, as not all spray materials can be produced in wire form.
• Electric Arc Wire Spray- With electric arc wire spray, an arc is produced by contact with two otherwise charged metallic wires, usually of the same composition. This leads to melting at the tip of the wire element. Air atomizes the melted spray substance and stimulates onto the substrate. The rate of spray is regulated by suitable regulation of the wire feed as it is dissolved, so a constant arc can be prepared.
• High-Velocity Oxy-Fuel Spray (HVOF)- The high-velocity oxy-fuel spray (HVOF gun) method is a comparatively recent addition to the group of thermal spray processes. As it uses a supersonic jet, setting it apart from the traditional flame spray, the speed of particle impact on the substrate is much more important, resulting in improved coating components. The mechanism differs from flame spraying by an extension of the jet at the exit of the gun. Fuel gases of propane, propylene, acetylene, hydrogen, and regular gas can be used, as great as liquid fuels such as kerosene.

Specification of Thermal Spray Coating

Applications Thermal Spray Coating Equipment

• Wear-resistant coatings against abrasion, erosion.
• Corrosion Coating.
• Heat Resistant Coating.
• Thermal insulation or conduction coating.
• Electromagnetic shielding.
• Medical Coating.

Industrial uses Thermal Spray Coating

• Automotive.
• Aerospace and Defence.
• Electronics.
• Agricultural Machinery.

Thermal Spray Coating Equipment in India

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