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Preparation method of super-flat aluminum alloy ribbed plate profile

A technology for aluminum alloy strips and profiles, which is used in metal extrusion control equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of manpower and material resources, poor flatness of profiles, and failure of profile plane clearance to meet control requirements, etc. Achieve the effect of improving the large plane gap and solving the large plane gap

Active Publication Date: 2021-06-08
广西南南铝加工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low degree of alloying of 6xxx series aluminum alloys, high temperature and low hardness during extrusion, the ultra-wide ribbed profile is easily deformed, resulting in defects such as horizontal and vertical bending and twisting. This defect cannot be completely eliminated during the processing, and even the flatness of the profile becomes worse after stretching, which leads to the plane gap of the profile not meeting the control requirements. It is necessary to improve the plane gap of the profile by shaping, which consumes manpower and material resources and greatly increases Cost of production
With the rapid development of my country's modern industry, higher requirements are put forward for the plane clearance of industrial aluminum alloy ribbed plate profiles. Thin and higher strength requirements, the traditional extrusion production process cannot meet the stringent requirements

Method used

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  • Preparation method of super-flat aluminum alloy ribbed plate profile
  • Preparation method of super-flat aluminum alloy ribbed plate profile
  • Preparation method of super-flat aluminum alloy ribbed plate profile

Examples

Experimental program
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Effect test

Embodiment 1

[0030]This preferred embodiment provides a method for preparing an ultra-flat aluminum alloy ribbed plate profile, and the specific steps are as follows:

[0031] (1) Melting and casting: batching is carried out according to the corresponding dosage and composition in Table 1, and put into the dome hydraulic tilting melting furnace together with aluminum ingots, magnesium ingots, zinc ingots and intermediate alloys for smelting, fully stirring and slag removal, The melting and holding temperature is 740°C, and the melting time is 7 hours; the aluminum alloy round ingot is obtained by water-cooled semi-continuous casting, the casting temperature is 735°C, and the casting cooling water flow rate is 400m 3 / h, the diameter of the gained circular ingot is 580mm, and its wagon is finally a circular ingot with a diameter of 566mm. The length of a single circular long ingot is 8000mm, and the ingot is cut into ingot blanks with a length of 1500mm after cutting off the head and tail w...

Embodiment 2

[0038] This preferred embodiment provides a method for preparing an ultra-flat aluminum alloy ribbed plate profile, and the specific steps are as follows:

[0039] (1) Melting and casting: batching is carried out according to the corresponding dosage and composition in Table 1, and put into the dome hydraulic tilting melting furnace together with aluminum ingots, magnesium ingots, zinc ingots and intermediate alloys for smelting, fully stirring and slag removal, The smelting and holding temperature is 730°C, and the smelting time is 10 hours; the aluminum alloy round ingot is obtained by water-cooled semi-continuous casting, the casting temperature is 725°C, and the casting cooling water flow rate is 300m 3 / h, the diameter of the gained circular ingot is 580mm, and its wagon is finally a circular ingot with a diameter of 566mm. The length of a single circular long ingot is 8000mm, and the ingot is cut into ingot blanks with a length of 1500mm after cutting off the head and ta...

Embodiment 3

[0046] This preferred embodiment provides a method for preparing an ultra-flat aluminum alloy ribbed plate profile, and the specific steps are as follows:

[0047] (1) Melting and casting: batching is carried out according to the corresponding dosage and composition in Table 1, and put into the dome hydraulic tilting melting furnace together with aluminum ingots, magnesium ingots, zinc ingots and intermediate alloys for smelting, fully stirring and slag removal, The melting and holding temperature is 730°C, and the melting time is 10 hours; the aluminum alloy round ingot is obtained by water-cooled semi-continuous casting, the casting temperature is 730°C, and the casting cooling water flow rate is 350m 3 / h, the diameter of the gained circular ingot is 580mm, and its wagon is finally a circular ingot with a diameter of 566mm. The length of a single circular long ingot is 8000mm, and the ingot is cut into ingot blanks with a length of 1800mm after cutting off the head and tail...

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Abstract

The invention discloses a preparation method of a super-flat aluminum alloy ribbed plate profile. The preparation method comprises the following steps of casting, preheating, extruding, online quenching, stretching and aging. In the extruding process, a preheated cast ingot is placed in an extruding machine to be extruded, the temperature of an extruding cylinder is 380-460 DEG C, the extruding speed is 0.2-6.0m / min, the temperature of the cast ingot is 390-530 DEG C, the extruding temperature of the profile is 470-530 DEG C, the profile is extruded out of a mold and then penetrates through a straightening tool so that high-temperature online straightening can be achieved, the straightening tool comprises a supporting plate located on the lower portion and a profiling pressing plate located on the upper portion, and on-line quenching is carried out after straightening. According to the preparation method of the super-flat aluminum alloy ribbed plate profile, after being extruded, the aluminum alloy ribbed plate profile is immediately subjected to high-temperature online straightening, and the profile passes through the straightening tool and is subjected to high-temperature online straightening, so that the transverse and longitudinal flatness of a product can be improved, and the problem that a plane gap of the aluminum alloy extruded ribbed plate profile is large is solved.

Description

technical field [0001] The invention relates to the technical field of extrusion forming and preparation of aluminum alloys, in particular to a method for preparing ultra-flat aluminum alloy ribbed plate profiles. Background technique [0002] The aluminum alloy ribbed plate is made by extrusion process. It is a profile with one or more protruding ribs parallel to each other on the plate surface in the length direction of the profile. It is obtained by welding the plate and the profile. Compared with similar planar structures, ribbed panels have great advantages. 6xxx series aluminum alloy has the advantages of strong corrosion resistance, good heat resistance, easy welding, strong toughness, etc., and is widely used in ships, aerospace, transportation, construction and other fields. The 6xxx series aluminum alloy has strong plasticity and is easy to be extruded at high temperature. High strength and hardness. However, due to the low degree of alloying of 6xxx series alum...

Claims

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Application Information

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IPC IPC(8): B21C23/21B21C29/00B21C29/04B21C31/00B21C35/03C22C1/02C22C1/03C22C21/00C22C21/02C22C21/08C22F1/00C22F1/04C22F1/043C22F1/047
CPCB21C23/21B21C31/00B21C29/04B21C29/003B21C35/03C22C21/02C22C21/08C22C21/00C22C1/03C22C1/026C22F1/043C22F1/047C22F1/04C22F1/002Y02P10/25
Inventor 韦祖祥赵睿澄齐林周伟何建贤莫宇飞向晶岑威张立刘德华
Owner 广西南南铝加工有限公司
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