roll bond evaporator manufacturing process

JINAN RETEK not only produces high quality roll bond evaporator, but also produces wire tube evaporator, copper evaporator, etc.

The method to be solved in this paper is how to produce the roll bond evaporator with good sealing performance and high heat conversion efficiency, and a production method of the roll bond evaporator, which comprises the following steps:

a, the cut aluminum plate is annealed, the annealing temperature is 470 ° C ° C, the time is 8h, and then cooled at room temperature; in this step the annealing temperature can also be 480 ° C, 490 or 500, the time can also be 7h Or 7. 5h, the annealing is mainly to remove the oil stain on the surface of the aluminum plate. b. The aluminum plate is roughened by the aluminum plate brushing machine, so that one side of the aluminum plate has roughness; C. The graphite is printed on the rough side of the aluminum plate, and the graphite line is formed on the surface of the aluminum plate, and then dried in the drying tunnel and baked. The temperature of the track is 120 ° C and the time is 3 min; the printing method is automatic printing, the temperature of the drying tunnel may be 130 ° C or 150 ° C, and the drying time may be 4 min or 5 min. d. On the dried aluminum plate, the surface of the graphite plate is coated with an aluminum plate to form a double-layer aluminum plate, and then placed in a continuous furnace for 48 minutes to 52 minutes, usually 50 minutes, and the temperature is 555 ° C _585 ° C, generally 570 ° C e, hot rolling and rolling of the double-layer aluminum plate from the continuous furnace to make the double-layer aluminum plate into a long thin aluminum plate, while cooling and rolling, cooling the double-layer aluminum plate with cooling liquid; f, reciprocating The aluminum plate is annealed at a temperature of 410 ° C _450 ° C, generally 430 ° C, the time is 3. 5h_4. 5h, generally 4h; g, the annealed aluminum plate is straightened by a leveler, and then drilled Blowing the hole for the art, the hole in the stone is on the stone star line; h, inflating through the hole of the gong, the inflation gas is nitrogen, the gas pressure is 8-10MPa, generally 9MPa, so that the aluminum plate on the graphite line Drilling to form a pipeline on the composite aluminum plate, and then cutting the composite aluminum plate forming the pipeline; i, punching the cut composite aluminum plate, punching the installation hole, and then welding the connecting pipe at the inflation hole on the pipeline, Forming an evaporator blank; j, performing a leak detection on the evaporator blank, and detecting the leak is an evaporator The billet is placed in water and tested by a compressed gas in the tube, and the airtightness is checked, and then the surface is cleaned of the oil and impurities, and the oil removal treatment is performed by using a JH-51 type aluminate solution, and then washed with water; k, The surface of the evaporator blank is passivated to form a protective film. The passivation process is performed by placing the evaporator blank into the JH-43 type aluminum film former solution, and then performing a second leak detection; I. drying the evaporator blank Dry treatment, drying temperature is 150 ° C _170 ° C, time is 18 min _ 20 min; drying for automatic coating, spraying powder on the surface of the evaporator blank, spraying powder is the main component of the epoxy resin powder, including curing agent Etc., powder spray enhances corrosion resistance and prolongs service life; after drying, it is dried and solidified again, the temperature is 145 ° C _235 ° C, the time is 23 min _ 25 min;

m, a nitrogen gas of 0.2 MPa was injected into the evaporator blank to form an inflation type evaporator. The inflated evaporator is then subjected to visual inspection and packaging.

The roll bond evaporator is formed by annealing, rolling, printing, covering, hot rolling, inflation, dusting, drying and solidification of the aluminum plate. The roll bond evaporator produced by the method has high heat conversion efficiency, long service life, high production efficiency, high automation degree of the production line and low cost.

roll bond evaporator

https://www.retekool.com/Roll-Bond-Evaporator-pl554135.html 

wire tube evaporator

https://www.retekool.com/Wire-Tube-Evaporator-pl505135.html 

copper evaporator

https://www.retekool.com/Copper-Evaporator-pl564135.html