Processing molding method of magnesium alloy plate type heat exchanger

A plate heat exchanger, magnesium alloy plate technology, applied in metal processing equipment, forming tools, manufacturing tools, etc., can solve the problems of unstable quality of aluminum alloy evaporation plate or condensation plate, wall thickness of aluminum alloy profiles, and complex structural forming. , The heat exchange efficiency of the plate heat exchanger is not too high, to achieve the effect of saving material and processing costs, reducing welding deformation, reducing welding heat input and thermal stress

Inactive Publication Date: 2013-04-17
CHONGQING UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] Ordinary aluminum alloy evaporating plates or condensing plates are parallel flow plate heat exchangers welded by aluminum alloy profiles. There are many materials and high cost, and the quality of the aluminum alloy evaporating plate or condensing plate formed by the conventional fusion welding process is not stable, and the heat exchange efficiency of the plate heat exchanger is not high

Method used

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  • Processing molding method of magnesium alloy plate type heat exchanger
  • Processing molding method of magnesium alloy plate type heat exchanger
  • Processing molding method of magnesium alloy plate type heat exchanger

Examples

Experimental program
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Effect test

Embodiment 1

[0055] see figure 1 and figure 2, two AZ91 magnesium alloy plates with a length of 1.5m, a width of 0.8m, and a thickness of 1.8mm are processed and processed. Rolling forms the surface micro-pattern, adopts the method of friction stir welding, with the welding process of the rotation speed of 800r / min and the welding speed of 150mm / min, two magnesium alloy plates are welded into honeycomb joints with a total of 880 equidistant points, 4 The length of the isolated welding bead is 1300mm, and the surroundings are sealed and welded; the aluminum-copper composite inlet pipe and the aluminum-copper composite outlet pipe are sealed and connected with the magnesium alloy evaporation plate body by arc welding; The alloy evaporation plate is bulging to form a honeycomb type evaporation plate with a hollow channel with dimple-like corrugations on the surface; then perform other post-welding processes and apply pressure, such as stress relief annealing, grinding, painting, etc. Final...

Embodiment 2

[0057] see figure 1 and image 3 , two AZ61 magnesium alloy plates with a length of 1.5m, a width of 0.8m, and a thickness of 1.8mm are processed and processed. Rolling forms the surface micro-pattern, using the method of friction stir welding, with the welding process of the rotation speed of 800r / min and the welding speed of 150mm / min, the fourteen equal-spaced welds of two magnesium alloy plates are welded into the middle weld. Seal and weld the surroundings; the aluminum-copper composite inlet pipe and the aluminum-copper composite outlet pipe are sealed and connected with the magnesium alloy condensing plate body by arc welding; the inflation positioning mold is used to bulge the magnesium alloy evaporating plate through high-pressure gas, Make it into a serpentine flow channel type evaporating plate with concave and convex surfaces alternated with semi-cylindrical curved and serpentine hollow flow channels; then perform other post-welding processes, apply pressure, such...

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PUM

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Abstract

The invention discloses a magnesium alloy plate type heat exchanger and a processing molding method thereof. The plate type heat exchanger comprises a snakelike flow channel type and honeycomb flow channel type evaporation plate or a cold plate. The plate type heat exchanger adopts a high strength magnesium alloy plate and consists of a magnesium alloy upper plate, a magnesium alloy lower plate, an inlet pipe and an outlet pipe, wherein the two magnesium alloy plates are overlapped and welded together by a solid-phase stir friction connecting method; the inlet pipe and the outlet pipe are inserted in the upper end and the lower end between the two high strength magnesium alloy plates and are connected with the high strength magnesium alloy plate type heat exchanger body by using an electric arc welding method; and then the plate type heat exchanger is finally molded through a mould and high-pressure bulging technology.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a magnesium alloy plate heat exchanger and a processing and forming method thereof. Background technique [0002] The refrigeration system is inseparable from the heat exchanger. The plate heat exchanger includes an evaporating plate and a condensing plate. The traditional plate heat exchanger mainly has a serpentine flow channel type and a honeycomb type evaporating plate or condensing plate. The ordinary evaporating plate or condensing plate Generally, two 1-3mm thick 304 stainless steel plates with a length of 1.2-1.8m and a width of 0.5-1.2m are welded by resistance welding to form a serpentine flow channel or a honeycomb flow channel, and the high-pressure gas exchanges heat with the magnesium alloy. The device is bulged to form a serpentine flow channel and honeycomb flow channel heat exchanger, allowing refrigerant (such as R-22 or ammonia) to flow in the hollow flow chan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B39/00F28F21/08B23P15/26B23K20/12B23K9/00B21D26/021B21D37/01B21D37/10
CPCF28F3/14F28F21/081
Inventor 罗键王颖
Owner CHONGQING UNIV
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