Coaxial powder feeding nozzle suitable for strip-shaped light spots
A technology of coaxial powder feeding and nozzles, which is applied in coating devices, improvement of process efficiency, processing and manufacturing, etc., can solve the problems of application limitations, inability to directly use semiconductor lasers, etc., to prevent high temperature oxidation and improve laser melting Covering efficiency, increase the effect of uniformity
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[0058] In this embodiment, a semiconductor laser with an output wavelength of 975nm, an output power of 12kW, and an output spot width of 36mm is used. The connecting bracket is made of a 2mm stainless steel plate to form a rectangular frame structure with an inner width of 30mm and a length of 50mm. The vertical baffle plate is 3 in height. The inner protective gas inlet is set at the center of one side of the longitudinal baffle 3, the inner diameter is Ф6mm, the height of the side baffle 2 is 70mm, and a hole is opened at a height of 10mm 2mm from the side for installing a manual knob or shaft (of course Also available micro-stepping motor), a rotating shaft is installed below the longitudinal baffle plate 3, i.e. the rotating shaft connector 5.
[0059] The one-side nozzle is made of red copper material with good thermal conductivity. Three powder inlets 8-1 are located at 15mm, 25mm, and 35mm respectively, with a diameter of Ф4mm. The powder mixing column 8-2 is a Ф1.2mm c...
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