Flame spraying is a coating process that uses a flame from an oxyacetylene mixture as a heat source. Powder or wire material is fed into the flame zone, where it instantly melts, then disperses and is transferred by the gas flow to the prepared surface of the part. The molten particles form a dense, stable layer on the substrate.
This is one of the most accessible and versatile thermal spraying technologies, allowing to work with both metals and polymeric materials.
Flame spraying covers a wide range of tasks, from rough restoration to fine decorative finishing:
Geometry restoration:
“Building up” worn bearing seats, restoration of shaft journals and other highly loaded surfaces.
Anti-corrosion protection:
Creation of durable coatings from zinc, aluminum, and stainless steel to protect the metal structures operating in atmospheric conditions.
Repair of plain bearings:
The application and restoration of the babbitt layer on liners is a classic task for the gas flame method.
The torch is compact and self-contained. The equipment is easily transported to heights or hard-to-reach locations, allowing spraying to be performed directly in the workshop or on-site without dismantling large components.
This is the most cost-effective thermal spraying method in terms of initial investment and cost per meter of coating. The simplicity of the equipment ensures low maintenance costs.
When protecting bridges, tanks or supports from corrosion, flame spraying allows for the rapid covering of large surfaces with sufficient quality.
Bridges, road barriers, overpasses, transmission line supports, architectural monuments
Water and chemical tanks, gas holders, metal building structures
Ships, ice platforms, etc.
Creating barrier layers on tanks and reactors operating in mildly aggressive environments
Tanks, column equipment, exhaust pipes
Sculptures, architectural monuments, forged grilles, bas-reliefs, lamp columns, gilded bases, fragments of facades, historical metal structures, elements of bridges and balconies
As with electric arc welding, zinc or aluminum coatings act as a “sacrificial anode.” This ensures the steel remains protected even if the layer is damaged locally.
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