Continuous extruding machine with cooling device outside extruding wheel

Abstract

The invention relates to extrusion production equipment, in particular to extrusion production equipment of nonferrous metal products such as copper, aluminum, magnesium and alloys thereof. The invention provides a continuous extruding machine with a cooling device outside an extruding wheel. The continuous extruding machine is characterized in that the extruding wheel is provided with an annulargroove, the periphery of the circumference of the extruding wheel is sequentially provided with a compaction wheel for pressing an extruded metal rod material, a cavity with an arc sealing surface anda scraper used for cleaning the outer surface of the extruding wheel along the rotation direction of the extruding wheel; cooling blocks are arranged on the periphery of the extruding wheel, arc surfaces are arranged on the inner sides of the cooling blocks, and the arc surfaces are in close contact with the outer surface of the extruding wheel and can slide relative to the outer surface of the extruding wheel; and cooling channels are arranged in the cooling blocks, and flowing cooling mediums are led into the cooling channels. According to the continuous extruding machine, the cooling blocks with the arc surfaces are adopted for directly cooling the outer surface of the extruding wheel so that the temperature of the outer surface of the extruding wheel can be effectively reduced, the production efficiency of continuous extrusion is improved, and the service life of the extruding wheel is prolonged.

Description

technical field [0001] The invention relates to extrusion production equipment, in particular to extrusion production equipment for non-ferrous metal products such as copper, aluminum, magnesium and their alloys. Background technique [0002] Continuous extrusion technology is hailed as a revolution in non-ferrous metal processing technology and has developed rapidly since its birth. A core technology of continuous extrusion is how to control the extrusion temperature to obtain high-quality products and low production costs. [0003] The extrusion wheel of the continuous extrusion machine has a very high temperature during operation due to friction with the metal billet. In order to control the extrusion temperature, the extrusion wheel is currently cooled by passing water through the inner surface of the extrusion wheel or cooling the extrusion wheel. The outer surfaces of the side rollers on both sides are directly sprayed with water for cooling. [0004] Cooling the ins...

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Problems solved by technology

[0004] Cooling the inside of the extrusion wheel with water will cause a large temperature difference between the inside and outside, and the temperature stress will cause the extrusion wheel to crack easily. At the same time, because the heat source of the extrusion wheel is in the groove of the extrusion wheel and the outer surface, so the cooling medium is far away from the heat source and high temperature area, and the cooling effect on the outer surface of the extrusion wheel and the groove of the extrusion wheel is not good, resulting in a short life of the extrusion wheel

At the same time, the extrusion machine has to limit the operating speed of the extrusion wheel due to the temperature limitation, so the production efficiency of the extrusion machine is also limited.

[0005] If water is directly sprayed on the outer surface of the side roller, although the temperature difference between the inside and outside of the extrusion wheel can be effectively reduced and the service life of the extrusion wheel can be improved, but because the water vapor will condense on the surface of the rod material, the product is prone to bubble formation Defects in product quality can also easily lead to corrosion of equipment parts

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