2. Thermal flame projection
2.1 General principle
Thermal spraying using heat energy from gas combustion is known as flame spraying.
The temperature of an oxy-fuel flame ranges from 2,800°C (oxypropane) to 3,150°C (oxyacetylene) (figure 8 ). Materials that melt at temperatures below 2,800°C, and which do not sublimate, can be projected in the flame.
2.2 Flame-powder projection
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Thermal flame projection
Arc spraying between two wires
Economic data
In 1995, the annual market for thermal spray consumables (wires, powders) was worth 130 million francs. Figure 1 gives a breakdown by sector of activity.
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