Method and device for liquid nitrogen cooling of aluminum profile extrusion die

An extrusion die and liquid nitrogen cooling technology, which is applied in the field of metal profile processing, can solve problems such as affecting processing efficiency and product quality decline, and achieve the effects of improving product quality, reducing scrap rate, and avoiding product quality decline

Active Publication Date: 2013-06-12
佛山市三水凤铝铝业有限公司 +1
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Problems solved by technology

[0006] In view of the shortcomings of the above-mentioned existing methods, the purpose of the present invention is to provide a liquid nitrogen cooling method and device for aluminum profile extrusion dies, aiming at solving the problem that the current aluminum alloy profile extrusion process causes the product quality to decline due to excessive temperature, which affects processing. efficiency problem

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  • Method and device for liquid nitrogen cooling of aluminum profile extrusion die

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Embodiment Construction

[0018] The present invention provides a liquid nitrogen cooling method and device for an aluminum profile extrusion die. In order to make the purpose, method scheme and effect of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0019] Such as figure 1 Shown is the connection schematic diagram of the liquid nitrogen cooling device of the aluminum profile extrusion die of the present invention, the device includes an extrusion die pad 500 with grooves, a liquid nitrogen storage tank 100, a vacuum heat insulation pipe 200, a secondary A cryocooler 400 and a closed-loop control system. The closed-loop control system is composed of an infrared thermometer 600 , a computer control system 700 , and a liquid nitrogen control valve 300 . The liquid nitrogen storage tank 100 ...

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Abstract

The invention discloses a method and a device for liquid nitrogen cooling of an aluminum profile extrusion die. According to the method and the device, a channel is opened on an extrusion die cushion according to the shape of the cross section of the die cushion, liquid nitrogen is input into the channel during the extrusion process of profiles, the liquid nitrogen cooling process is controlled by a closed ring control system, and the temperature of an extrusion die is controlled at 440-480 DEG C. With the method and the device for liquid nitrogen cooling of an aluminum profile extrusion die, the problems that the product quality is lowered and the extrusion efficiency is low caused by overhigh temperature during extrusion of aluminum alloy profiles are avoided, the extrusion speed of the die is improved by 10-50 percent, the service life of the die is prolonged, and meanwhile, the product quality is improved, the dimension precision of aluminum profiles machined is higher, the surface smoothness is better, and the rejection rate is reduced.

Description

technical field [0001] The invention relates to the field of metal profile processing, in particular to a liquid nitrogen cooling method and device for an aluminum profile extrusion die. Background technique [0002] With the take-off of China's economy, the production, application and consumption of aluminum alloy profiles have developed rapidly. In 2007, the output of aluminum profiles in China has reached about 5.4 million tons, of which the output of construction aluminum profiles has exceeded 3.9 million tons, which has been stable for three consecutive years. Ranking first in the world, it has become the world's largest producer and consumer of extruded aluminum. Extruded aluminum materials include pipes, rods, profiles and wires. Among them, the production of extruded profiles is the most difficult, with the most varieties and specifications and the largest output. [0003] However, the low speed and low efficiency of aluminum extrusion hinder the further improvement...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C29/04
Inventor 陈慧黄志其葛杰胡权鲁炎卿刘志铭吴小源
Owner 佛山市三水凤铝铝业有限公司
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