Variable-pitch spiral shaft for transportation of aluminum liquid
A screw shaft and variable pitch technology, applied in packaging and other directions, can solve the problems of aluminum liquid pollution, affecting the purity of aluminum liquid, etc., and achieve the effect of accelerating transmission
Pending Publication Date: 2019-08-16
WUXI LONGSHAN TECH +1
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Problems solved by technology
[0004] In order to solve the problem that the liquid aluminum is polluted during transportation and affects the purity of the aluminum liquid, the present invention proposes a variable-pitch helical shaft for the transmission of aluminum liquid
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[0013] As shown in the figure, the variable-pitch screw shaft includes screw shaft 1 and screw blade 2; the geometric shape elements are: screw blade diameter φD, screw shaft diameter φd, screw blade front pitch PI, screw blade rear pitch PII, and screw blade thickness S , the helix angle β, the helix angle α at the inner edge of the helical blade;
[0014] The φD=130mm, φd=40mm, PⅠ=200mm, PⅡ=300mm, S=20mm, α=87°, β=100°.
[0015] The screw shaft is made of silicon nitride ceramic composite material.
[0016] After the screw shaft is formed and sintered, the screw thread is processed. The combination of the lathe and the milling cutter is adopted. The three-axis linkage of the workpiece rotation axis, the pitch of the hanging wheel is 192mm, the turning degree of the main shaft is 7.5r / min, and the feed speed of each step is slow. The process should be small, and the tool should be changed every 90 minutes. To ensure the accuracy, 0.2mm is reserved, 0.05mm each time, the pitc...
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The invention provides a variable-pitch spiral shaft for transportation of aluminum liquid. The variable-pitch spiral shaft comprises a spiral shaft 1 and a spiral blade 2, wherein the geometrical shape element comprises spiral blade diameter phi D, spiral shaft diameter phi d, spiral blade front end screw pitch P I , spiral blade rear end screw pitch P II, spiral blade thickness S, spiral rise angle beta and spiral blade inner edge spiral rise angle alpha, wherein the phi D is equal to 130 mm, the phi d is equal to 40 mm, and the P I is equal to 200 mm, the P II is equal to 300 mm, the S is equal to 20 mm, the alpha is equal to 87 degrees, and the beta is equal to 100 degrees; and the spiral shaft adopts a silicon nitride ceramic composite material. According to the variable-pitch spiralshaft, the variable-pitch spiral shaft is formed by adopting the silicon nitride ceramic composite material, aluminum liquid is not adhered, and no pollution is caused to the transportation of the aluminum liquid; and after sintering, machining is carried out, the spiral blade adopts a variable-pitch structure, the spiral blade front end screw pitch is smaller than the spiral blade rear end screwpitch, a sliding surface of the aluminum liquid is changed, and impurities in the aluminum liquid are discharged, and the transportation of the aluminum liquid is accelerated. The variable-pitch spiral shaft is suitable for being used as the spiral shaft of the transportation of the aluminum liquid.
Description
technical field [0001] The invention relates to the screw transmission of molten aluminum, in particular to the screw shaft for the transmission of molten aluminum. Background technique [0002] At present, the transportation of molten aluminum is carried out by transfer ladle. This process is to import the molten aluminum in the smelting furnace into the transfer ladle. The transfer ladle is transported by forklift, and then the aluminum liquid is poured into the final mold to make the product. , the process is accompanied by the loss of the temperature of the aluminum liquid, the aluminum liquid is polluted by unknown impurities in the air during the transportation process, and there are disadvantages such as the cost of personnel and equipment during the transportation process. [0003] Omitting the transfer ladle usually adopts the horizontal screw conveyor transmission method, and its main component is the screw shaft. When the screw shaft of the machine is started to r...
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IPC IPC(8): B65G33/26
CPCB65G33/265
Inventor 徐涛伊恒彬陈大海田鑫王婷婷
Owner WUXI LONGSHAN TECH