Composite liquid absorption core of heat dissipation heat pipe and manufacture method thereof
A liquid absorbing core and heat pipe technology, applied in the field of heat transfer heat pipes, can solve the problems of high capillary pressure, low thermal resistance, small return resistance, etc., and achieve the effects of large capillary pressure, small thermal resistance, and small heat dissipation space
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[0037] Example 1:
[0038] A manufacturing method of a heat pipe composite wick for heat dissipation includes the following steps and process conditions:
[0039] (1) Take the red copper powder particles with a particle size of 100-140 mesh. The red copper powder particles are spherical copper powder and irregular copper powder, and most of them are irregular copper powder particles. Take the copper fiber with a diameter of 150μm and a length of 2mm. The mass ratio of the copper powder particles to the copper fiber is 10:1; the core rod is placed in the copper tube to form an annular liquid wick filling space, and the copper powder particles and copper are filled in Mixture of fibers; for the filling of copper powder particles mixed with copper fibers, the concentricity of the core rod and the copper tube must be ensured. If the core rod is not in the center of the copper tube, the wick after sintering will be eccentric, thereby affecting The heat transfer performance of the micro...
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[0047] Example 2
[0048] A method for manufacturing a heat pipe composite wick for heat dissipation includes the following steps and process conditions:
[0049] (1) Take spherical copper powder with a particle size of 140 mesh-200 mesh, a copper fiber diameter of 150 μm, a length of 5 mm, and a mass ratio of copper powder to copper fiber of 6:1; a thin copper plate rectangle of 55mm×55mm×4mm Fill the cavity with a mixture of 5g of copper powder particles and copper fibers; for the filling of copper powder particles mixed with copper fibers, the uniformity of the copper fibers in the copper powder particles must be ensured to make the wick structure uniform, and the micro heat pipe Stable performance.
[0050] (2) Use a mold to flatten the mixture of copper powder and copper fiber in the rectangular cavity, place the powder-filled thin copper flat rectangular cavity on the bracket and fix it, place it in a vacuum-protected sintering furnace for sintering, and set the temperature ...
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