Double airflow supersonic plasma spray gun
A supersonic plasma and dual air flow technology, applied in the direction of plasma, electrical components, etc., can solve the problems of increased production cost and downtime loss, low arc starting effect and service life, poor stability of equipment and process, etc., to achieve optimal coating Performance quality, flow uniformity, effect of protecting tungsten cathode
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[0028] Example one:
[0029] The dual-flow supersonic plasma spray gun according to the present invention presses figure 1 The schematic diagram of the structure is assembled. The insulated back seat 2 is made of Teflon plastic. The high-frequency generator connector 3, the cathode rod 1 and the water outlet channel 17 are all made of copper. The diameter of the high-frequency generator connector 3 is 6mm, and the outer diameter of the cathode rod 1 is 13mm. The inner diameter is 9 mm, the outer diameter of the water outlet channel 17 is 12 mm, and the inner diameter is 8 mm. The front end of the cathode rod 1 is screwed with a tungsten cathode 13 with a diameter of 10 mm. The middle pole base 4 is made of steel; the arc starting middle pole 12 and the accelerating middle pole 10 are made of chromium-zirconium copper alloy, and the inner diameter is 10mm. The air gas distribution ring 5 is made of copper. The volume ratio of propane to air is about 1 / 19. The pressure of argon...
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