Device for preparing semi-solid slurry

Abstract

The invention discloses a device for preparing semi-solid slurry, and belongs to the technical field of material processing. The device comprises a smelting furnace, a graphite plunger, a flow guiding pipe, an air inlet pipe, a sealing cover I, an upper rotary drum, a cooling pipe, a middle heat insulation pipe, a belt wheel, a heating device, a lower rotary drum, a center column, a slurry collecting funnel, a motor, a conveying belt, a support, a sealing cover II, an air outlet pipe and a valve. The device controls the nuclear number through control over the melt temperature, the pouring speed, the rotating speed of the rotary drums and the melt rapid nucleation cooling speed, and the solid phase rate of the semi-solid slurry is controlled through the heating temperature of the lower rotary drum and the center column. The device is simple in structure, machining is easy, cost is low, the semi-solid slurry with the needed solid phase fraction can be continuously prepared, and very good application prospects are achieved.

Description

technical field [0001] The invention discloses a device for preparing semi-solid slurry, which belongs to the technical field of material processing. Background technique [0002] Metal semi-solid slurry refers to a solid-liquid mixed slurry in which nearly spherical solid phase particles are evenly suspended in liquid metal mother liquor. The forming process using metal semi-solid slurry is called semi-solid forming. Semi-solid forming technology has received extensive attention and in-depth research since it was discovered by Professor Flemings of the Massachusetts Institute of Technology in the 1970s. Compared with traditional casting, semi-solid forming technology has a certain volume fraction of solid phase in its liquid phase, which has small latent heat of crystallization and small solidification shrinkage. Therefore, the formed parts have compact structure, high mechanical properties, high dimensional accuracy, can realize near-net forming, have little thermal impa...

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Problems solved by technology

In the existing pulping method, there are problems of high cost, or long process, or the inability to continuously prepare slurry, or obtain uniform slurry. These problems are largely caused by the lack of suitable equipment for preparation.

For example, inclined plate overcurrent cooling to prepare semi-solid slurry has low equipment cost and convenient production, but only one kind of solid phase ratio and semi-solid slurry with good shape factor can be obtained; the equipment cost of double-helical shearing method is relatively high ; Although the electromagnetic stirring method is the current mainstream pulping method, the energy utilization rate is low, resulting in high production costs, and it cannot continuously prepare semi-solid pulp

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