▎ 摘　　要

NOVELTY - Processing of finned tube involves placing placing seamless special-shaped steel pipe in spray electrodeposition equipment, scanning and moving worktable of spray electrodeposition equipment in left and right directions, ultrasonically treating, placing in an electrostatic field, and treating to obtain zinc-graphene seamless special-shaped steel pipe, placing in a microwave muffle furnace, heating, incubating, cooling, taking out, placing in a hot isostatic pressing furnace, heating under the condition of argon atmosphere and static pressure of 180-200 MPa, maintaining for 1-2 hours to obtain sintered zinc-graphene seamless special-shaped steel pipe, rolling out fins on the finned tube rolling mill, filling the thermal conductive filler into the gap of the fins with a thickness of 4-6 mm, placing in a resistance furnace, heating, cooling, opening annular groove on the thermally conductive filler between the fins by using a mold. USE - Processing of finned tube used for heat exchanger tubes in petroleum, chemical, electric power, and refrigeration industries. ADVANTAGE - The finned tube has excellent corrosion resistance and high strength effect. DETAILED DESCRIPTION - Processing of finned tube involves (1) immersing the hot-rolled raw material pipe in a hydrochloric acid solution with a mass fraction of 2 to 4 times the mass of the hot-rolled raw material pipe, soaking for 3-4 hours at 40-45degrees Celsius, rinsing with water for 1-2 hours, and soaking in which the mass fraction of the hot-rolled raw material pipe is 2 to 4 times the mass fraction of 21% sodium hydroxide solution, for 2-3 hours to obtain a clean hot-rolled raw material pipe, (2) placing the clean hot-rolled raw material pipe in a hydraulic cold drawing machine, and pulling into o59 mm inner die pulled to o95x18 mm hydraulic cold drawing machine with a drawing force of 99 t, elongation coefficient of 1.16, to obtain cold-drawing raw material pipe (p1) by heat treatment, (3) placing the pipe (p1) in o87.9x16 mm hydraulic cold-drawing machine, and pulling o55.9 mm inner die to the hydraulic cold-drawing machine with drawing force of 100 t and elongation coefficient of 1.20, to obtain the cold-drawing raw material pipe (p2), pulling the cold-drawn raw material pipe (p2) to the o52.9 mm inner mold of o80.9x14 mm hydraulic cold-drawing machine with a pulling force of 91 t and an elongation coefficient of 1.23, and heating to obtain the cold-drawn raw material tube (p3), (4) placing the pipe (p3) in o77.3x12.5 mm hydraulic cold-drawing machine, and pulling it to the 52.3 mm 51.7 mm inner die of o73.7x11 mm hydraulic cold-drawing machine with a drawing force of 54 t and an elongation coefficient of 1.16, to obtain the cold-drawn raw material pipe (p4), drawing the pipe (p4) to the inner die of the hydraulic cold-drawing machine, with the drawing force of o51 t, and the elongation coefficient of 1.17, to obtain cold-drawn raw material pipe (p5) by heat treatment, (5) placing the pipe (p5) in the laser processing equipment to etch the raw material tube, (6) placing the etching raw material pipe into a high-temperature furnace, under argon atmosphere, heat up to 550-600degreesC at a speed of 10-15degrees Celsius/minute, turning on the radio frequency source, setting the power to 200 W, and feed 20 sccm of methane for 40-50 minute, it is naturally lowered to room temperature to obtain the graphene raw material tube, (7) placing graphene raw material tube in o69.1x9 mm hydraulic cold drawing machine, drawing 51.1 mm inner mold drawn to the hydraulic cold drawing machine with drawing force of 63 t and the elongation coefficient of 1.28, to obtain cold drawing raw material tube (p6) and drawing the pipe (p6) to 50.5 mm inner mold of 64.5x7 hydraulic cold-drawing machine with drawing force of 59 t, and elongation coefficient of 1.34, to obtain cold-drawing raw material pipe (p7) by heat treatment, (8) placing the cold-drawn raw material pipe (p7) in o75x57x5 mm hydraulic cold-drawing machine, and drawing 47 mm inner mold to the hydraulic cold-drawing machine with drawing force of 60 t, and elongation coefficient of 1.55, a cutting length of 12 m, and heating to obtain a seamless special-shaped steel pipe, (9) placing the seamless special-shaped steel pipe in the spray electrodeposition equipment, after 3-5 minutes of fixed-point deposition, scanning and moving worktable of the spray electrodeposition equipment in the left and right directions, at the scanning distance is 0.3-0.6 mm, after 6-8 minutes of deposition, ultrasonically treating for 20-35 minutes, placing in an electrostatic field, and treating for 30-40 minutes to obtain zinc-graphene seamless special-shaped steel pipe, and (10) placing zinc-graphene seamless special-shaped steel pipe in a microwave muffle furnace, and heating to 700-800degreesC at 2-2.4 GHz, incubating for 20-30 minutes, cooling down to 200degrees Celsius, taking out, placing in a hot isostatic pressing furnace, heating up to 1300-1350degreesC under the condition of argon atmosphere and static pressure of 180-200 MPa, maintaining for 1-2 hours to obtain sintered zinc-graphene seamless special-shaped steel pipe, rolling out fins on the finned tube rolling mill, filling the thermal conductive filler into the gap of the fins with a thickness of 4-6 mm, placing in a resistance furnace, maintaining the temperature at 300degreesC for 30-40 minutes, heating up to 400-500degrees Celsius, and heating it up to 800-900degrees Celsius after holding for 2-3 hours, after 8-10 hours of heat preservation, cooling to 300degrees Celsius, opening annular groove with a width of 0.8-1 mm on the thermally conductive filler between the fins by using a mold.