Processing molding method for stainless steel plate type heat exchanger
A technology of plate heat exchangers and stainless steel plates, applied in forming tools, metal processing equipment, manufacturing tools, etc., can solve the problems of easy deformation and warping of plate heat exchangers, easy accumulation of refrigerant and condensing oil, and linear expansion coefficient of stainless steel Large and other problems, to achieve the effect of improving welding efficiency, improving work effect, and small flow resistance of refrigerant
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Embodiment 1
[0066] see figure 1 with figure 2 , two 304L stainless steel plates with a length of 1.5m, a width of 0.8m, and a thickness of 1.2mm are processed and processed. To form surface micro-patterns, two stainless steel plates are welded at 880 equidistant points by means of current-carrying friction welding with a rotation speed of 2000r / min, a welding speed of 120mm / min, and a current-carrying current of 2KA. Honeycomb solder joints, 4 isolated welds with a length of 1300mm, and the plates are sealed and welded; the aluminum-copper composite inlet pipe and the aluminum-copper composite outlet pipe are sealed and connected to the stainless steel evaporation plate body by arc welding; the inflation positioning mold is adopted, The stainless steel evaporating plate is bulged by high-pressure gas to form a honeycomb-type evaporating plate with hollow channels and dimple-like corrugations on the surface; then other post-welding processes are performed, such as grinding, painting, etc...
Embodiment 2
[0068] see figure 1 with image 3 , Two pieces of 316 stainless steel with a length of 1.5m, a width of 0.8m, and a thickness of 1.3mm are processed and processed, the inner and outer surfaces of the stainless steel plate are subjected to surface shot peening and nano-treatment, and the superimposed inner surface is formed by mechanical micro-rolling The surface is micro-patterned, and laser welding is adopted. The power is 1200W, the welding speed is 1.8m / min, and the attenuation speed is 30%. and sealing and welding the surroundings; the aluminum-copper composite inlet pipe and the aluminum-copper composite outlet pipe are sealed and connected with the stainless steel condensing plate body by arc welding; the inflation positioning mold is used to bulge the stainless steel evaporating plate through high-pressure gas, Make it into a serpentine flow channel type evaporating plate with concave and convex surfaces with semi-cylindrical curved and serpentine hollow flow channels;...
Embodiment 3
[0070] see figure 1 with image 3 , Two pieces of 18-8 stainless steel with a length of 1.5m, a width of 0.8m, and a thickness of 1.1mm are processed and processed, and the inner and outer surfaces of the stainless steel plate are subjected to surface shot peening and nano-treatment, and the superimposed inner surface is subjected to mechanical micro-rolling Press to form micro-patterns on the surface, using water-cooled resistance welding method, welding two stainless steel plates with 14 equal-spaced welding passes into the middle welding pass with a welding current of 8KA, a welding speed of 45cm / min, and an electrode pressure of 5KN. Seal and weld the surroundings; connect the aluminum-copper composite inlet pipe and the aluminum-copper composite outlet pipe with the stainless steel condensing plate body by arc welding; use an inflation positioning mold to bulge the stainless steel evaporating plate with high-pressure gas to make it It is formed into a serpentine flow cha...
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